--- /dev/null
+/*
+Copyright (c) 2008, 2009 jerome DOT laurens AT u-bourgogne DOT fr
+
+This file is part of the SyncTeX package.
+
+Version: 1.9
+See synctex_parser_readme.txt for more details
+
+Latest Revision: Wed Jul 1 11:18:18 UTC 2009
+
+License:
+--------
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE
+
+Except as contained in this notice, the name of the copyright holder
+shall not be used in advertising or otherwise to promote the sale,
+use or other dealings in this Software without prior written
+authorization from the copyright holder.
+
+Acknowledgments:
+----------------
+The author received useful remarks from the pdfTeX developers, especially Hahn The Thanh,
+and significant help from XeTeX developer Jonathan Kew
+
+Nota Bene:
+----------
+If you include or use a significant part of the synctex package into a software,
+I would appreciate to be listed as contributor and see "SyncTeX" highlighted.
+
+Version 1
+Thu Jun 19 09:39:21 UTC 2008
+
+*/
+
+/* We assume that high level application like pdf viewers will want
+ * to embed this code as is. We assume that they also have locale.h and setlocale.
+ * For other tools such as TeXLive tools, you must define SYNCTEX_USE_LOCAL_HEADER,
+ * when building. You also have to create and customize synctex_parser_local.h to fit your system.
+ * In particular, the HAVE_LOCALE_H and HAVE_SETLOCALE macros should be properly defined.
+ * With this design, you should not need to edit this file. */
+
+# if defined(SYNCTEX_USE_LOCAL_HEADER)
+# include "synctex_parser_local.h"
+# else
+# define HAVE_LOCALE_H 1
+# define HAVE_SETLOCALE 1
+# if defined(_MSC_VER)
+# define SYNCTEX_INLINE __inline
+# else
+# define SYNCTEX_INLINE inline
+# endif
+# endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+
+#if defined(HAVE_LOCALE_H)
+#include <locale.h>
+#endif
+
+/* The data is organized in a graph with multiple entries.
+ * The root object is a scanner, it is created with the contents on a synctex file.
+ * Each leaf of the tree is a synctex_node_t object.
+ * There are 3 subtrees, two of them sharing the same leaves.
+ * The first tree is the list of input records, where input file names are associated with tags.
+ * The second tree is the box tree as given by TeX when shipping pages out.
+ * First level objects are sheets, containing boxes, glues, kerns...
+ * The third tree allows to browse leaves according to tag and line.
+ */
+
+#include "synctex_parser.h"
+#include <synctex_parser_utils.h>
+
+/* These are the possible extensions of the synctex file */
+const char * synctex_suffix = ".synctex";
+const char * synctex_suffix_gz = ".gz";
+
+static const char * synctex_io_modes[synctex_io_mode_append+2] = {"r","rb","a","ab"};
+
+/* each synctex node has a class */
+typedef struct __synctex_class_t _synctex_class_t;
+typedef _synctex_class_t * synctex_class_t;
+
+
+/* synctex_node_t is a pointer to a node
+ * _synctex_node is the target of the synctex_node_t pointer
+ * It is a pseudo object oriented program.
+ * class is a pointer to the class object the node belongs to.
+ * implementation is meant to contain the private data of the node
+ * basically, there are 2 kinds of information: navigation information and
+ * synctex information. Both will depend on the type of the node,
+ * thus different nodes will have different private data.
+ * There is no inheritancy overhead.
+ */
+typedef union _synctex_info_t {
+ int INT;
+ char * PTR;
+} synctex_info_t;
+
+struct _synctex_node {
+ synctex_class_t class;
+ synctex_info_t * implementation;
+};
+
+/* Each node of the tree, except the scanner itself belongs to a class.
+ * The class object is just a struct declaring the owning scanner
+ * This is a pointer to the scanner as root of the tree.
+ * The type is used to identify the kind of node.
+ * The class declares pointers to a creator and a destructor method.
+ * The log and display fields are used to log and display the node.
+ * display will also display the child, sibling and parent sibling.
+ * parent, child and sibling are used to navigate the tree,
+ * from TeX box hierarchy point of view.
+ * The friend field points to a method which allows to navigate from friend to friend.
+ * A friend is a node with very close tag and line numbers.
+ * Finally, the info field point to a method giving the private node info offset.
+ */
+
+typedef synctex_node_t *(*_synctex_node_getter_t)(synctex_node_t);
+typedef synctex_info_t *(*_synctex_info_getter_t)(synctex_node_t);
+
+struct __synctex_class_t {
+ synctex_scanner_t scanner;
+ int type;
+ synctex_node_t (*new)(synctex_scanner_t scanner);
+ void (*free)(synctex_node_t);
+ void (*log)(synctex_node_t);
+ void (*display)(synctex_node_t);
+ _synctex_node_getter_t parent;
+ _synctex_node_getter_t child;
+ _synctex_node_getter_t sibling;
+ _synctex_node_getter_t friend;
+ _synctex_node_getter_t next_box;
+ _synctex_info_getter_t info;
+};
+
+# ifdef SYNCTEX_NOTHING
+# pragma mark -
+# pragma mark Abstract OBJECTS and METHODS
+# endif
+
+/* These macros are shortcuts
+ * This macro checks if a message can be sent.
+ */
+# define SYNCTEX_CAN_PERFORM(NODE,SELECTOR)\
+ (NULL!=((((NODE)->class))->SELECTOR))
+
+/* This macro is some kind of objc_msg_send.
+ * It takes care of sending the proper message if possible.
+ */
+# define SYNCTEX_MSG_SEND(NODE,SELECTOR) if(NODE && SYNCTEX_CAN_PERFORM(NODE,SELECTOR)) {\
+ (*((((NODE)->class))->SELECTOR))(NODE);\
+ }
+
+/* read only safe getter
+ */
+# define SYNCTEX_GET(NODE,SELECTOR)((NODE && SYNCTEX_CAN_PERFORM(NODE,SELECTOR))?SYNCTEX_GETTER(NODE,SELECTOR)[0]:(NULL))
+
+/* read/write getter
+ */
+# define SYNCTEX_GETTER(NODE,SELECTOR)\
+ ((synctex_node_t *)((*((((NODE)->class))->SELECTOR))(NODE)))
+
+# define SYNCTEX_FREE(NODE) SYNCTEX_MSG_SEND(NODE,free);
+
+/* Parent getter and setter
+ */
+# define SYNCTEX_PARENT(NODE) SYNCTEX_GET(NODE,parent)
+# define SYNCTEX_SET_PARENT(NODE,NEW_PARENT) if(NODE && NEW_PARENT && SYNCTEX_CAN_PERFORM(NODE,parent)){\
+ SYNCTEX_GETTER(NODE,parent)[0]=NEW_PARENT;\
+ }
+
+/* Child getter and setter
+ */
+# define SYNCTEX_CHILD(NODE) SYNCTEX_GET(NODE,child)
+# define SYNCTEX_SET_CHILD(NODE,NEW_CHILD) if(NODE && NEW_CHILD){\
+ SYNCTEX_GETTER(NODE,child)[0]=NEW_CHILD;\
+ SYNCTEX_GETTER(NEW_CHILD,parent)[0]=NODE;\
+ }
+
+/* Sibling getter and setter
+ */
+# define SYNCTEX_SIBLING(NODE) SYNCTEX_GET(NODE,sibling)
+# define SYNCTEX_SET_SIBLING(NODE,NEW_SIBLING) if(NODE && NEW_SIBLING) {\
+ SYNCTEX_GETTER(NODE,sibling)[0]=NEW_SIBLING;\
+ if(SYNCTEX_CAN_PERFORM(NEW_SIBLING,parent) && SYNCTEX_CAN_PERFORM(NODE,parent)) {\
+ SYNCTEX_GETTER(NEW_SIBLING,parent)[0]=SYNCTEX_GETTER(NODE,parent)[0];\
+ }\
+ }
+/* Friend getter and setter. A friend is a kern, math, glue or void box node which tag and line numbers are similar.
+ * This is a first filter on the nodes that avoids testing all of them.
+ * Friends are used mainly in forward synchronization aka from source to output.
+ */
+# define SYNCTEX_FRIEND(NODE) SYNCTEX_GET(NODE,friend)
+# define SYNCTEX_SET_FRIEND(NODE,NEW_FRIEND) if(NODE && NEW_FRIEND){\
+ SYNCTEX_GETTER(NODE,friend)[0]=NEW_FRIEND;\
+ }
+
+/* Next box getter and setter. The box tree can be traversed from one horizontal box to the other.
+ * Navigation starts with the deeper boxes.
+ */
+# define SYNCTEX_NEXT_HORIZ_BOX(NODE) SYNCTEX_GET(NODE,next_box)
+# define SYNCTEX_SET_NEXT_HORIZ_BOX(NODE,NEXT_BOX) if(NODE && NEXT_BOX){\
+ SYNCTEX_GETTER(NODE,next_box)[0]=NEXT_BOX;\
+ }
+
+void _synctex_free_node(synctex_node_t node);
+void _synctex_free_leaf(synctex_node_t node);
+
+/* A node is meant to own its child and sibling.
+ * It is not owned by its parent, unless it is its first child.
+ * This destructor is for all nodes with children.
+ */
+void _synctex_free_node(synctex_node_t node) {
+ if(node) {
+ (*((node->class)->sibling))(node);
+ SYNCTEX_FREE(SYNCTEX_SIBLING(node));
+ SYNCTEX_FREE(SYNCTEX_CHILD(node));
+ free(node);
+ }
+ return;
+}
+
+/* A node is meant to own its child and sibling.
+ * It is not owned by its parent, unless it is its first child.
+ * This destructor is for nodes with no child.
+ */
+void _synctex_free_leaf(synctex_node_t node) {
+ if(node) {
+ SYNCTEX_FREE(SYNCTEX_SIBLING(node));
+ free(node);
+ }
+ return;
+}
+# ifdef __SYNCTEX_WORK__
+# include "/usr/include/zlib.h"
+# else
+# include <zlib.h>
+# endif
+
+/* The synctex scanner is the root object.
+ * Is is initialized with the contents of a text file or a gzipped file.
+ * The buffer_? are first used to parse the text.
+ */
+struct __synctex_scanner_t {
+ gzFile file; /* The (possibly compressed) file */
+ char * buffer_cur; /* current location in the buffer */
+ char * buffer_start; /* start of the buffer */
+ char * buffer_end; /* end of the buffer */
+ char * output_fmt; /* dvi or pdf, not yet used */
+ char * output; /* the output name used to create the scanner */
+ char * synctex; /* the .synctex or .synctex.gz name used to create the scanner */
+ int version; /* 1, not yet used */
+ struct {
+ unsigned has_parsed:1; /* Whether the scanner has parsed its underlying synctex file. */
+ unsigned reserved:sizeof(unsigned)-1; /* alignment */
+ } flags;
+ int pre_magnification; /* magnification from the synctex preamble */
+ int pre_unit; /* unit from the synctex preamble */
+ int pre_x_offset; /* X offste from the synctex preamble */
+ int pre_y_offset; /* Y offset from the synctex preamble */
+ int count; /* Number of records, from the synctex postamble */
+ float unit; /* real unit, from synctex preamble or post scriptum */
+ float x_offset; /* X offset, from synctex preamble or post scriptum */
+ float y_offset; /* Y Offset, from synctex preamble or post scriptum */
+ synctex_node_t sheet; /* The first sheet node, its siblings are the other sheet nodes */
+ synctex_node_t input; /* The first input node, its siblings are the other input nodes */
+ int number_of_lists; /* The number of friend lists */
+ synctex_node_t * lists_of_friends;/* The friend lists */
+ _synctex_class_t class[synctex_node_number_of_types]; /* The classes of the nodes of the scanner */
+};
+
+/* SYNCTEX_CUR, SYNCTEX_START and SYNCTEX_END are convenient shortcuts
+ */
+# define SYNCTEX_CUR (scanner->buffer_cur)
+# define SYNCTEX_START (scanner->buffer_start)
+# define SYNCTEX_END (scanner->buffer_end)
+
+# ifdef SYNCTEX_NOTHING
+# pragma mark -
+# pragma mark OBJECTS, their creators and destructors.
+# endif
+
+/* Here, we define the indices for the different informations.
+ * They are used to declare the size of the implementation.
+ * For example, if one object uses SYNCTEX_HORIZ_IDX is its size,
+ * then its info will contain a tag, line, column, horiz but no width nor height nor depth
+ */
+
+/* The sheet is a first level node.
+ * It has no parent (the parent is the scanner itself)
+ * Its sibling points to another sheet.
+ * Its child points to its first child, in general a box.
+ * A sheet node contains only one synctex information: the page.
+ * This is the 1 based page index as given by TeX.
+ */
+/* The next macros are used to access the node info
+ * SYNCTEX_INFO(node) points to the first synctex integer or pointer data of node
+ * SYNCTEX_INFO(node)[index] is the information at index
+ * for example, the page of a sheet is stored in SYNCTEX_INFO(sheet)[SYNCTEX_PAGE_IDX]
+ */
+# define SYNCTEX_INFO(NODE) ((*((((NODE)->class))->info))(NODE))
+# define SYNCTEX_PAGE_IDX 0
+# define SYNCTEX_PAGE(NODE) SYNCTEX_INFO(NODE)[SYNCTEX_PAGE_IDX].INT
+
+/* This macro defines implementation offsets
+ * It is only used for pointer values
+ */
+# define SYNCTEX_MAKE_GET(SYNCTEX_GETTER,OFFSET)\
+synctex_node_t * SYNCTEX_GETTER (synctex_node_t node);\
+synctex_node_t * SYNCTEX_GETTER (synctex_node_t node) {\
+ return node?(synctex_node_t *)((&((node)->implementation))+OFFSET):NULL;\
+}
+SYNCTEX_MAKE_GET(_synctex_implementation_0,0)
+SYNCTEX_MAKE_GET(_synctex_implementation_1,1)
+SYNCTEX_MAKE_GET(_synctex_implementation_2,2)
+SYNCTEX_MAKE_GET(_synctex_implementation_3,3)
+SYNCTEX_MAKE_GET(_synctex_implementation_4,4)
+SYNCTEX_MAKE_GET(_synctex_implementation_5,5)
+
+typedef struct {
+ synctex_class_t class;
+ synctex_info_t implementation[3+SYNCTEX_PAGE_IDX+1];/* child, sibling, next box,
+ * SYNCTEX_PAGE_IDX */
+} synctex_sheet_t;
+
+synctex_node_t _synctex_new_sheet(synctex_scanner_t scanner);
+void _synctex_display_sheet(synctex_node_t sheet);
+void _synctex_log_sheet(synctex_node_t sheet);
+
+static _synctex_class_t synctex_class_sheet = {
+ NULL, /* No scanner yet */
+ synctex_node_type_sheet, /* Node type */
+ &_synctex_new_sheet, /* creator */
+ &_synctex_free_node, /* destructor */
+ &_synctex_log_sheet, /* log */
+ &_synctex_display_sheet, /* display */
+ NULL, /* No parent */
+ &_synctex_implementation_0, /* child */
+ &_synctex_implementation_1, /* sibling */
+ NULL, /* No friend */
+ &_synctex_implementation_2, /* Next box */
+ (_synctex_info_getter_t)&_synctex_implementation_3 /* info */
+};
+
+/* sheet node creator */
+synctex_node_t _synctex_new_sheet(synctex_scanner_t scanner) {
+ synctex_node_t node = _synctex_malloc(sizeof(synctex_sheet_t));
+ if(node) {
+ node->class = scanner?scanner->class+synctex_node_type_sheet:(synctex_class_t)&synctex_class_sheet;
+ }
+ return node;
+}
+
+/* A box node contains navigation and synctex information
+ * There are different kind of boxes.
+ * Only horizontal boxes are treated differently because of their visible size.
+ */
+# define SYNCTEX_TAG_IDX 0
+# define SYNCTEX_LINE_IDX (SYNCTEX_TAG_IDX+1)
+# define SYNCTEX_COLUMN_IDX (SYNCTEX_LINE_IDX+1)
+# define SYNCTEX_HORIZ_IDX (SYNCTEX_COLUMN_IDX+1)
+# define SYNCTEX_VERT_IDX (SYNCTEX_HORIZ_IDX+1)
+# define SYNCTEX_WIDTH_IDX (SYNCTEX_VERT_IDX+1)
+# define SYNCTEX_HEIGHT_IDX (SYNCTEX_WIDTH_IDX+1)
+# define SYNCTEX_DEPTH_IDX (SYNCTEX_HEIGHT_IDX+1)
+/* the corresponding info accessors */
+# define SYNCTEX_TAG(NODE) SYNCTEX_INFO(NODE)[SYNCTEX_TAG_IDX].INT
+# define SYNCTEX_LINE(NODE) SYNCTEX_INFO(NODE)[SYNCTEX_LINE_IDX].INT
+# define SYNCTEX_COLUMN(NODE) SYNCTEX_INFO(NODE)[SYNCTEX_COLUMN_IDX].INT
+# define SYNCTEX_HORIZ(NODE) SYNCTEX_INFO(NODE)[SYNCTEX_HORIZ_IDX].INT
+# define SYNCTEX_VERT(NODE) SYNCTEX_INFO(NODE)[SYNCTEX_VERT_IDX].INT
+# define SYNCTEX_WIDTH(NODE) SYNCTEX_INFO(NODE)[SYNCTEX_WIDTH_IDX].INT
+# define SYNCTEX_HEIGHT(NODE) SYNCTEX_INFO(NODE)[SYNCTEX_HEIGHT_IDX].INT
+# define SYNCTEX_DEPTH(NODE) SYNCTEX_INFO(NODE)[SYNCTEX_DEPTH_IDX].INT
+# define SYNCTEX_ABS_WIDTH(NODE) ((SYNCTEX_WIDTH(NODE)>0?SYNCTEX_WIDTH(NODE):-SYNCTEX_WIDTH(NODE)))
+# define SYNCTEX_ABS_HEIGHT(NODE) ((SYNCTEX_HEIGHT(NODE)>0?SYNCTEX_HEIGHT(NODE):-SYNCTEX_HEIGHT(NODE)))
+# define SYNCTEX_ABS_DEPTH(NODE) ((SYNCTEX_DEPTH(NODE)>0?SYNCTEX_DEPTH(NODE):-SYNCTEX_DEPTH(NODE)))
+
+typedef struct {
+ synctex_class_t class;
+ synctex_info_t implementation[5+SYNCTEX_DEPTH_IDX+1]; /* parent,child,sibling,friend,next box,
+ * SYNCTEX_TAG,SYNCTEX_LINE,SYNCTEX_COLUMN,
+ * SYNCTEX_HORIZ,SYNCTEX_VERT,SYNCTEX_WIDTH,SYNCTEX_HEIGHT,SYNCTEX_DEPTH */
+} synctex_vert_box_node_t;
+
+synctex_node_t _synctex_new_vbox(synctex_scanner_t scanner);
+void _synctex_log_box(synctex_node_t sheet);
+void _synctex_display_vbox(synctex_node_t node);
+
+/* These are static class objects, each scanner will make a copy of them and setup the scanner field.
+ */
+static _synctex_class_t synctex_class_vbox = {
+ NULL, /* No scanner yet */
+ synctex_node_type_vbox, /* Node type */
+ &_synctex_new_vbox, /* creator */
+ &_synctex_free_node, /* destructor */
+ &_synctex_log_box, /* log */
+ &_synctex_display_vbox, /* display */
+ &_synctex_implementation_0, /* parent */
+ &_synctex_implementation_1, /* child */
+ &_synctex_implementation_2, /* sibling */
+ &_synctex_implementation_3, /* friend */
+ &_synctex_implementation_4, /* next box */
+ (_synctex_info_getter_t)&_synctex_implementation_5
+};
+
+/* vertical box node creator */
+synctex_node_t _synctex_new_vbox(synctex_scanner_t scanner) {
+ synctex_node_t node = _synctex_malloc(sizeof(synctex_vert_box_node_t));
+ if(node) {
+ node->class = scanner?scanner->class+synctex_node_type_vbox:(synctex_class_t)&synctex_class_vbox;
+ }
+ return node;
+}
+
+# define SYNCTEX_HORIZ_V_IDX (SYNCTEX_DEPTH_IDX+1)
+# define SYNCTEX_VERT_V_IDX (SYNCTEX_HORIZ_V_IDX+1)
+# define SYNCTEX_WIDTH_V_IDX (SYNCTEX_VERT_V_IDX+1)
+# define SYNCTEX_HEIGHT_V_IDX (SYNCTEX_WIDTH_V_IDX+1)
+# define SYNCTEX_DEPTH_V_IDX (SYNCTEX_HEIGHT_V_IDX+1)
+/* the corresponding info accessors */
+# define SYNCTEX_HORIZ_V(NODE) SYNCTEX_INFO(NODE)[SYNCTEX_HORIZ_V_IDX].INT
+# define SYNCTEX_VERT_V(NODE) SYNCTEX_INFO(NODE)[SYNCTEX_VERT_V_IDX].INT
+# define SYNCTEX_WIDTH_V(NODE) SYNCTEX_INFO(NODE)[SYNCTEX_WIDTH_V_IDX].INT
+# define SYNCTEX_HEIGHT_V(NODE) SYNCTEX_INFO(NODE)[SYNCTEX_HEIGHT_V_IDX].INT
+# define SYNCTEX_DEPTH_V(NODE) SYNCTEX_INFO(NODE)[SYNCTEX_DEPTH_V_IDX].INT
+# define SYNCTEX_ABS_WIDTH_V(NODE) ((SYNCTEX_WIDTH_V(NODE)>0?SYNCTEX_WIDTH_V(NODE):-SYNCTEX_WIDTH_V(NODE)))
+# define SYNCTEX_ABS_HEIGHT_V(NODE) ((SYNCTEX_HEIGHT_V(NODE)>0?SYNCTEX_HEIGHT_V(NODE):-SYNCTEX_HEIGHT_V(NODE)))
+# define SYNCTEX_ABS_DEPTH_V(NODE) ((SYNCTEX_DEPTH_V(NODE)>0?SYNCTEX_DEPTH_V(NODE):-SYNCTEX_DEPTH_V(NODE)))
+
+/* Horizontal boxes must contain visible size, because 0 width does not mean emptiness */
+typedef struct {
+ synctex_class_t class;
+ synctex_info_t implementation[5+SYNCTEX_DEPTH_V_IDX+1]; /*parent,child,sibling,friend,next box,
+ * SYNCTEX_TAG,SYNCTEX_LINE,SYNCTEX_COLUMN,
+ * SYNCTEX_HORIZ,SYNCTEX_VERT,SYNCTEX_WIDTH,SYNCTEX_HEIGHT,SYNCTEX_DEPTH,
+ * SYNCTEX_HORIZ_V,SYNCTEX_VERT_V,SYNCTEX_WIDTH_V,SYNCTEX_HEIGHT_V,SYNCTEX_DEPTH_V*/
+} synctex_horiz_box_node_t;
+
+synctex_node_t _synctex_new_hbox(synctex_scanner_t scanner);
+void _synctex_display_hbox(synctex_node_t node);
+void _synctex_log_horiz_box(synctex_node_t sheet);
+
+
+static _synctex_class_t synctex_class_hbox = {
+ NULL, /* No scanner yet */
+ synctex_node_type_hbox, /* Node type */
+ &_synctex_new_hbox, /* creator */
+ &_synctex_free_node, /* destructor */
+ &_synctex_log_horiz_box, /* log */
+ &_synctex_display_hbox, /* display */
+ &_synctex_implementation_0, /* parent */
+ &_synctex_implementation_1, /* child */
+ &_synctex_implementation_2, /* sibling */
+ &_synctex_implementation_3, /* friend */
+ &_synctex_implementation_4, /* next box */
+ (_synctex_info_getter_t)&_synctex_implementation_5
+};
+
+/* horizontal box node creator */
+synctex_node_t _synctex_new_hbox(synctex_scanner_t scanner) {
+ synctex_node_t node = _synctex_malloc(sizeof(synctex_horiz_box_node_t));
+ if(node) {
+ node->class = scanner?scanner->class+synctex_node_type_hbox:(synctex_class_t)&synctex_class_hbox;
+ }
+ return node;
+}
+
+/* This void box node implementation is either horizontal or vertical
+ * It does not contain a child field.
+ */
+typedef struct {
+ synctex_class_t class;
+ synctex_info_t implementation[3+SYNCTEX_DEPTH_IDX+1]; /* parent,sibling,friend,
+ * SYNCTEX_TAG,SYNCTEX_LINE,SYNCTEX_COLUMN,
+ * SYNCTEX_HORIZ,SYNCTEX_VERT,SYNCTEX_WIDTH,SYNCTEX_HEIGHT,SYNCTEX_DEPTH*/
+} synctex_void_box_node_t;
+
+synctex_node_t _synctex_new_void_vbox(synctex_scanner_t scanner);
+void _synctex_log_void_box(synctex_node_t sheet);
+void _synctex_display_void_vbox(synctex_node_t node);
+
+static _synctex_class_t synctex_class_void_vbox = {
+ NULL, /* No scanner yet */
+ synctex_node_type_void_vbox,/* Node type */
+ &_synctex_new_void_vbox, /* creator */
+ &_synctex_free_node, /* destructor */
+ &_synctex_log_void_box, /* log */
+ &_synctex_display_void_vbox,/* display */
+ &_synctex_implementation_0, /* parent */
+ NULL, /* No child */
+ &_synctex_implementation_1, /* sibling */
+ &_synctex_implementation_2, /* friend */
+ NULL, /* No next box */
+ (_synctex_info_getter_t)&_synctex_implementation_3
+};
+
+/* vertical void box node creator */
+synctex_node_t _synctex_new_void_vbox(synctex_scanner_t scanner) {
+ synctex_node_t node = _synctex_malloc(sizeof(synctex_void_box_node_t));
+ if(node) {
+ node->class = scanner?scanner->class+synctex_node_type_void_vbox:(synctex_class_t)&synctex_class_void_vbox;
+ }
+ return node;
+}
+
+synctex_node_t _synctex_new_void_hbox(synctex_scanner_t scanner);
+void _synctex_display_void_hbox(synctex_node_t node);
+
+static _synctex_class_t synctex_class_void_hbox = {
+ NULL, /* No scanner yet */
+ synctex_node_type_void_hbox,/* Node type */
+ &_synctex_new_void_hbox, /* creator */
+ &_synctex_free_node, /* destructor */
+ &_synctex_log_void_box, /* log */
+ &_synctex_display_void_hbox,/* display */
+ &_synctex_implementation_0, /* parent */
+ NULL, /* No child */
+ &_synctex_implementation_1, /* sibling */
+ &_synctex_implementation_2, /* friend */
+ NULL, /* No next box */
+ (_synctex_info_getter_t)&_synctex_implementation_3
+};
+
+/* horizontal void box node creator */
+synctex_node_t _synctex_new_void_hbox(synctex_scanner_t scanner) {
+ synctex_node_t node = _synctex_malloc(sizeof(synctex_void_box_node_t));
+ if(node) {
+ node->class = scanner?scanner->class+synctex_node_type_void_hbox:(synctex_class_t)&synctex_class_void_hbox;
+ }
+ return node;
+}
+
+/* The medium nodes correspond to kern, glue, penalty and math nodes. */
+typedef struct {
+ synctex_class_t class;
+ synctex_info_t implementation[3+SYNCTEX_WIDTH_IDX+1]; /* parent,sibling,friend,
+ * SYNCTEX_TAG,SYNCTEX_LINE,SYNCTEX_COLUMN,
+ * SYNCTEX_HORIZ,SYNCTEX_VERT,SYNCTEX_WIDTH */
+} synctex_medium_node_t;
+
+#define SYNCTEX_IS_BOX(NODE)\
+ ((NODE->class->type == synctex_node_type_vbox)\
+ || (NODE->class->type == synctex_node_type_void_vbox)\
+ || (NODE->class->type == synctex_node_type_hbox)\
+ || (NODE->class->type == synctex_node_type_void_hbox))
+
+#define SYNCTEX_HAS_CHILDREN(NODE) (NODE && SYNCTEX_CHILD(NODE))
+
+void _synctex_log_medium_node(synctex_node_t node);
+
+/* math node creator */
+synctex_node_t _synctex_new_math(synctex_scanner_t scanner);
+void _synctex_display_math(synctex_node_t node);
+
+static _synctex_class_t synctex_class_math = {
+ NULL, /* No scanner yet */
+ synctex_node_type_math, /* Node type */
+ &_synctex_new_math, /* creator */
+ &_synctex_free_leaf, /* destructor */
+ &_synctex_log_medium_node, /* log */
+ &_synctex_display_math, /* display */
+ &_synctex_implementation_0, /* parent */
+ NULL, /* No child */
+ &_synctex_implementation_1, /* sibling */
+ &_synctex_implementation_2, /* friend */
+ NULL, /* No next box */
+ (_synctex_info_getter_t)&_synctex_implementation_3
+};
+
+synctex_node_t _synctex_new_math(synctex_scanner_t scanner) {
+ synctex_node_t node = _synctex_malloc(sizeof(synctex_medium_node_t));
+ if(node) {
+ node->class = scanner?scanner->class+synctex_node_type_math:(synctex_class_t)&synctex_class_math;
+ }
+ return node;
+}
+
+/* kern node creator */
+synctex_node_t _synctex_new_kern(synctex_scanner_t scanner);
+void _synctex_display_kern(synctex_node_t node);
+
+static _synctex_class_t synctex_class_kern = {
+ NULL, /* No scanner yet */
+ synctex_node_type_kern, /* Node type */
+ &_synctex_new_kern, /* creator */
+ &_synctex_free_leaf, /* destructor */
+ &_synctex_log_medium_node, /* log */
+ &_synctex_display_kern, /* display */
+ &_synctex_implementation_0, /* parent */
+ NULL, /* No child */
+ &_synctex_implementation_1, /* sibling */
+ &_synctex_implementation_2, /* friend */
+ NULL, /* No next box */
+ (_synctex_info_getter_t)&_synctex_implementation_3
+};
+
+synctex_node_t _synctex_new_kern(synctex_scanner_t scanner) {
+ synctex_node_t node = _synctex_malloc(sizeof(synctex_medium_node_t));
+ if(node) {
+ node->class = scanner?scanner->class+synctex_node_type_kern:(synctex_class_t)&synctex_class_kern;
+ }
+ return node;
+}
+
+/* The small nodes correspond to glue and boundary nodes. */
+typedef struct {
+ synctex_class_t class;
+ synctex_info_t implementation[3+SYNCTEX_VERT_IDX+1]; /* parent,sibling,friend,
+ * SYNCTEX_TAG,SYNCTEX_LINE,SYNCTEX_COLUMN,
+ * SYNCTEX_HORIZ,SYNCTEX_VERT */
+} synctex_small_node_t;
+
+void _synctex_log_small_node(synctex_node_t node);
+/* glue node creator */
+synctex_node_t _synctex_new_glue(synctex_scanner_t scanner);
+void _synctex_display_glue(synctex_node_t node);
+
+static _synctex_class_t synctex_class_glue = {
+ NULL, /* No scanner yet */
+ synctex_node_type_glue, /* Node type */
+ &_synctex_new_glue, /* creator */
+ &_synctex_free_leaf, /* destructor */
+ &_synctex_log_medium_node, /* log */
+ &_synctex_display_glue, /* display */
+ &_synctex_implementation_0, /* parent */
+ NULL, /* No child */
+ &_synctex_implementation_1, /* sibling */
+ &_synctex_implementation_2, /* friend */
+ NULL, /* No next box */
+ (_synctex_info_getter_t)&_synctex_implementation_3
+};
+synctex_node_t _synctex_new_glue(synctex_scanner_t scanner) {
+ synctex_node_t node = _synctex_malloc(sizeof(synctex_medium_node_t));
+ if(node) {
+ node->class = scanner?scanner->class+synctex_node_type_glue:(synctex_class_t)&synctex_class_glue;
+ }
+ return node;
+}
+
+/* boundary node creator */
+synctex_node_t _synctex_new_boundary(synctex_scanner_t scanner);
+void _synctex_display_boundary(synctex_node_t node);
+
+static _synctex_class_t synctex_class_boundary = {
+ NULL, /* No scanner yet */
+ synctex_node_type_boundary, /* Node type */
+ &_synctex_new_boundary, /* creator */
+ &_synctex_free_leaf, /* destructor */
+ &_synctex_log_small_node, /* log */
+ &_synctex_display_boundary, /* display */
+ &_synctex_implementation_0, /* parent */
+ NULL, /* No child */
+ &_synctex_implementation_1, /* sibling */
+ &_synctex_implementation_2, /* friend */
+ NULL, /* No next box */
+ (_synctex_info_getter_t)&_synctex_implementation_3
+};
+
+synctex_node_t _synctex_new_boundary(synctex_scanner_t scanner) {
+ synctex_node_t node = _synctex_malloc(sizeof(synctex_small_node_t));
+ if(node) {
+ node->class = scanner?scanner->class+synctex_node_type_boundary:(synctex_class_t)&synctex_class_boundary;
+ }
+ return node;
+}
+
+# define SYNCTEX_NAME_IDX (SYNCTEX_TAG_IDX+1)
+# define SYNCTEX_NAME(NODE) SYNCTEX_INFO(NODE)[SYNCTEX_NAME_IDX].PTR
+
+/* Input nodes only know about their sibling, which is another input node.
+ * The synctex information is the SYNCTEX_TAG and SYNCTEX_NAME*/
+typedef struct {
+ synctex_class_t class;
+ synctex_info_t implementation[1+SYNCTEX_NAME_IDX+1]; /* sibling,
+ * SYNCTEX_TAG,SYNCTEX_NAME */
+} synctex_input_t;
+
+synctex_node_t _synctex_new_input(synctex_scanner_t scanner);
+void _synctex_free_input(synctex_node_t node);
+void _synctex_display_input(synctex_node_t node);
+void _synctex_log_input(synctex_node_t sheet);
+
+static _synctex_class_t synctex_class_input = {
+ NULL, /* No scanner yet */
+ synctex_node_type_input, /* Node type */
+ &_synctex_new_input, /* creator */
+ &_synctex_free_input, /* destructor */
+ &_synctex_log_input, /* log */
+ &_synctex_display_input, /* display */
+ NULL, /* No parent */
+ NULL, /* No child */
+ &_synctex_implementation_0, /* sibling */
+ NULL, /* No friend */
+ NULL, /* No next box */
+ (_synctex_info_getter_t)&_synctex_implementation_1
+};
+
+synctex_node_t _synctex_new_input(synctex_scanner_t scanner) {
+ synctex_node_t node = _synctex_malloc(sizeof(synctex_input_t));
+ if(node) {
+ node->class = scanner?scanner->class+synctex_node_type_input:(synctex_class_t)&synctex_class_input;
+ }
+ return node;
+}
+void _synctex_free_input(synctex_node_t node){
+ if(node) {
+ SYNCTEX_FREE(SYNCTEX_SIBLING(node));
+ free(SYNCTEX_NAME(node));
+ free(node);
+ }
+}
+# ifdef SYNCTEX_NOTHING
+# pragma mark -
+# pragma mark Navigation
+# endif
+synctex_node_t synctex_node_parent(synctex_node_t node)
+{
+ return SYNCTEX_PARENT(node);
+}
+synctex_node_t synctex_node_sheet(synctex_node_t node)
+{
+ while(node && node->class->type != synctex_node_type_sheet) {
+ node = SYNCTEX_PARENT(node);
+ }
+ /* exit the while loop either when node is NULL or node is a sheet */
+ return node;
+}
+synctex_node_t synctex_node_child(synctex_node_t node)
+{
+ return SYNCTEX_CHILD(node);
+}
+synctex_node_t synctex_node_sibling(synctex_node_t node)
+{
+ return SYNCTEX_SIBLING(node);
+}
+synctex_node_t synctex_node_next(synctex_node_t node) {
+ if(SYNCTEX_CHILD(node)) {
+ return SYNCTEX_CHILD(node);
+ }
+sibling:
+ if(SYNCTEX_SIBLING(node)) {
+ return SYNCTEX_SIBLING(node);
+ }
+ if((node = SYNCTEX_PARENT(node))) {
+ if(node->class->type == synctex_node_type_sheet) {/* EXC_BAD_ACCESS? */
+ return NULL;
+ }
+ goto sibling;
+ }
+ return NULL;
+}
+# ifdef SYNCTEX_NOTHING
+# pragma mark -
+# pragma mark CLASS
+# endif
+
+/* Public node accessor: the type */
+synctex_node_type_t synctex_node_type(synctex_node_t node) {
+ if(node) {
+ return (((node)->class))->type;
+ }
+ return synctex_node_type_error;
+}
+
+/* Public node accessor: the human readable type */
+const char * synctex_node_isa(synctex_node_t node) {
+static const char * isa[synctex_node_number_of_types] =
+ {"Not a node","input","sheet","vbox","void vbox","hbox","void hbox","kern","glue","math","boundary"};
+ return isa[synctex_node_type(node)];
+}
+
+# ifdef SYNCTEX_NOTHING
+# pragma mark -
+# pragma mark SYNCTEX_LOG
+# endif
+
+# define SYNCTEX_LOG(NODE) SYNCTEX_MSG_SEND(NODE,log)
+
+/* Public node logger */
+void synctex_node_log(synctex_node_t node) {
+ SYNCTEX_LOG(node);
+}
+
+# define SYNCTEX_DISPLAY(NODE) SYNCTEX_MSG_SEND(NODE,display)
+
+void synctex_node_display(synctex_node_t node) {
+ SYNCTEX_DISPLAY(node);
+}
+
+void _synctex_display_input(synctex_node_t node) {
+ printf("....Input:%i:%s\n",
+ SYNCTEX_TAG(node),
+ SYNCTEX_NAME(node));
+ SYNCTEX_DISPLAY(SYNCTEX_SIBLING(node));
+}
+
+void _synctex_log_sheet(synctex_node_t sheet) {
+ if(sheet) {
+ printf("%s:%i\n",synctex_node_isa(sheet),SYNCTEX_PAGE(sheet));
+ printf("SELF:%p",(void *)sheet);
+ printf(" SYNCTEX_PARENT:%p",(void *)SYNCTEX_PARENT(sheet));
+ printf(" SYNCTEX_CHILD:%p",(void *)SYNCTEX_CHILD(sheet));
+ printf(" SYNCTEX_SIBLING:%p",(void *)SYNCTEX_SIBLING(sheet));
+ printf(" SYNCTEX_FRIEND:%p\n",(void *)SYNCTEX_FRIEND(sheet));
+ }
+}
+
+void _synctex_log_small_node(synctex_node_t node) {
+ printf("%s:%i,%i:%i,%i\n",
+ synctex_node_isa(node),
+ SYNCTEX_TAG(node),
+ SYNCTEX_LINE(node),
+ SYNCTEX_HORIZ(node),
+ SYNCTEX_VERT(node));
+ printf("SELF:%p",(void *)node);
+ printf(" SYNCTEX_PARENT:%p",(void *)SYNCTEX_PARENT(node));
+ printf(" SYNCTEX_CHILD:%p",(void *)SYNCTEX_CHILD(node));
+ printf(" SYNCTEX_SIBLING:%p",(void *)SYNCTEX_SIBLING(node));
+ printf(" SYNCTEX_FRIEND:%p\n",(void *)SYNCTEX_FRIEND(node));
+}
+
+void _synctex_log_medium_node(synctex_node_t node) {
+ printf("%s:%i,%i:%i,%i:%i\n",
+ synctex_node_isa(node),
+ SYNCTEX_TAG(node),
+ SYNCTEX_LINE(node),
+ SYNCTEX_HORIZ(node),
+ SYNCTEX_VERT(node),
+ SYNCTEX_WIDTH(node));
+ printf("SELF:%p",(void *)node);
+ printf(" SYNCTEX_PARENT:%p",(void *)SYNCTEX_PARENT(node));
+ printf(" SYNCTEX_CHILD:%p",(void *)SYNCTEX_CHILD(node));
+ printf(" SYNCTEX_SIBLING:%p",(void *)SYNCTEX_SIBLING(node));
+ printf(" SYNCTEX_FRIEND:%p\n",(void *)SYNCTEX_FRIEND(node));
+}
+
+void _synctex_log_void_box(synctex_node_t node) {
+ printf("%s",synctex_node_isa(node));
+ printf(":%i",SYNCTEX_TAG(node));
+ printf(",%i",SYNCTEX_LINE(node));
+ printf(",%i",0);
+ printf(":%i",SYNCTEX_HORIZ(node));
+ printf(",%i",SYNCTEX_VERT(node));
+ printf(":%i",SYNCTEX_WIDTH(node));
+ printf(",%i",SYNCTEX_HEIGHT(node));
+ printf(",%i",SYNCTEX_DEPTH(node));
+ printf("\nSELF:%p",(void *)node);
+ printf(" SYNCTEX_PARENT:%p",(void *)SYNCTEX_PARENT(node));
+ printf(" SYNCTEX_CHILD:%p",(void *)SYNCTEX_CHILD(node));
+ printf(" SYNCTEX_SIBLING:%p",(void *)SYNCTEX_SIBLING(node));
+ printf(" SYNCTEX_FRIEND:%p\n",(void *)SYNCTEX_FRIEND(node));
+}
+
+void _synctex_log_box(synctex_node_t node) {
+ printf("%s",synctex_node_isa(node));
+ printf(":%i",SYNCTEX_TAG(node));
+ printf(",%i",SYNCTEX_LINE(node));
+ printf(",%i",0);
+ printf(":%i",SYNCTEX_HORIZ(node));
+ printf(",%i",SYNCTEX_VERT(node));
+ printf(":%i",SYNCTEX_WIDTH(node));
+ printf(",%i",SYNCTEX_HEIGHT(node));
+ printf(",%i",SYNCTEX_DEPTH(node));
+ printf("\nSELF:%p",(void *)node);
+ printf(" SYNCTEX_PARENT:%p",(void *)SYNCTEX_PARENT(node));
+ printf(" SYNCTEX_CHILD:%p",(void *)SYNCTEX_CHILD(node));
+ printf(" SYNCTEX_SIBLING:%p",(void *)SYNCTEX_SIBLING(node));
+ printf(" SYNCTEX_FRIEND:%p\n",(void *)SYNCTEX_FRIEND(node));
+}
+
+void _synctex_log_horiz_box(synctex_node_t node) {
+ printf("%s",synctex_node_isa(node));
+ printf(":%i",SYNCTEX_TAG(node));
+ printf(",%i",SYNCTEX_LINE(node));
+ printf(",%i",0);
+ printf(":%i",SYNCTEX_HORIZ(node));
+ printf(",%i",SYNCTEX_VERT(node));
+ printf(":%i",SYNCTEX_WIDTH(node));
+ printf(",%i",SYNCTEX_HEIGHT(node));
+ printf(",%i",SYNCTEX_DEPTH(node));
+ printf("/%i",SYNCTEX_HORIZ_V(node));
+ printf(",%i",SYNCTEX_VERT_V(node));
+ printf(":%i",SYNCTEX_WIDTH_V(node));
+ printf(",%i",SYNCTEX_HEIGHT_V(node));
+ printf(",%i",SYNCTEX_DEPTH_V(node));
+ printf("\nSELF:%p",(void *)node);
+ printf(" SYNCTEX_PARENT:%p",(void *)SYNCTEX_PARENT(node));
+ printf(" SYNCTEX_CHILD:%p",(void *)SYNCTEX_CHILD(node));
+ printf(" SYNCTEX_SIBLING:%p",(void *)SYNCTEX_SIBLING(node));
+ printf(" SYNCTEX_FRIEND:%p\n",(void *)SYNCTEX_FRIEND(node));
+}
+
+void _synctex_log_input(synctex_node_t node) {
+ printf("%s",synctex_node_isa(node));
+ printf(":%i",SYNCTEX_TAG(node));
+ printf(",%s",SYNCTEX_NAME(node));
+ printf(" SYNCTEX_SIBLING:%p",(void *)SYNCTEX_SIBLING(node));
+}
+
+void _synctex_display_sheet(synctex_node_t sheet) {
+ if(sheet) {
+ printf("....{%i\n",SYNCTEX_PAGE(sheet));
+ SYNCTEX_DISPLAY(SYNCTEX_CHILD(sheet));
+ printf("....}\n");
+ SYNCTEX_DISPLAY(SYNCTEX_SIBLING(sheet));
+ }
+}
+
+void _synctex_display_vbox(synctex_node_t node) {
+ printf("....[%i,%i:%i,%i:%i,%i,%i\n",
+ SYNCTEX_TAG(node),
+ SYNCTEX_LINE(node),
+ SYNCTEX_HORIZ(node),
+ SYNCTEX_VERT(node),
+ SYNCTEX_WIDTH(node),
+ SYNCTEX_HEIGHT(node),
+ SYNCTEX_DEPTH(node));
+ SYNCTEX_DISPLAY(SYNCTEX_CHILD(node));
+ printf("....]\n");
+ SYNCTEX_DISPLAY(SYNCTEX_SIBLING(node));
+}
+
+void _synctex_display_hbox(synctex_node_t node) {
+ printf("....(%i,%i:%i,%i:%i,%i,%i\n",
+ SYNCTEX_TAG(node),
+ SYNCTEX_LINE(node),
+ SYNCTEX_HORIZ(node),
+ SYNCTEX_VERT(node),
+ SYNCTEX_WIDTH(node),
+ SYNCTEX_HEIGHT(node),
+ SYNCTEX_DEPTH(node));
+ SYNCTEX_DISPLAY(SYNCTEX_CHILD(node));
+ printf("....)\n");
+ SYNCTEX_DISPLAY(SYNCTEX_SIBLING(node));
+}
+
+void _synctex_display_void_vbox(synctex_node_t node) {
+ printf("....v%i,%i;%i,%i:%i,%i,%i\n",
+ SYNCTEX_TAG(node),
+ SYNCTEX_LINE(node),
+ SYNCTEX_HORIZ(node),
+ SYNCTEX_VERT(node),
+ SYNCTEX_WIDTH(node),
+ SYNCTEX_HEIGHT(node),
+ SYNCTEX_DEPTH(node));
+ SYNCTEX_DISPLAY(SYNCTEX_SIBLING(node));
+}
+
+void _synctex_display_void_hbox(synctex_node_t node) {
+ printf("....h%i,%i:%i,%i:%i,%i,%i\n",
+ SYNCTEX_TAG(node),
+ SYNCTEX_LINE(node),
+ SYNCTEX_HORIZ(node),
+ SYNCTEX_VERT(node),
+ SYNCTEX_WIDTH(node),
+ SYNCTEX_HEIGHT(node),
+ SYNCTEX_DEPTH(node));
+ SYNCTEX_DISPLAY(SYNCTEX_SIBLING(node));
+}
+
+void _synctex_display_glue(synctex_node_t node) {
+ printf("....glue:%i,%i:%i,%i\n",
+ SYNCTEX_TAG(node),
+ SYNCTEX_LINE(node),
+ SYNCTEX_HORIZ(node),
+ SYNCTEX_VERT(node));
+ SYNCTEX_DISPLAY(SYNCTEX_SIBLING(node));
+}
+
+void _synctex_display_math(synctex_node_t node) {
+ printf("....math:%i,%i:%i,%i\n",
+ SYNCTEX_TAG(node),
+ SYNCTEX_LINE(node),
+ SYNCTEX_HORIZ(node),
+ SYNCTEX_VERT(node));
+ SYNCTEX_DISPLAY(SYNCTEX_SIBLING(node));
+}
+
+void _synctex_display_kern(synctex_node_t node) {
+ printf("....kern:%i,%i:%i,%i:%i\n",
+ SYNCTEX_TAG(node),
+ SYNCTEX_LINE(node),
+ SYNCTEX_HORIZ(node),
+ SYNCTEX_VERT(node),
+ SYNCTEX_WIDTH(node));
+ SYNCTEX_DISPLAY(SYNCTEX_SIBLING(node));
+}
+
+void _synctex_display_boundary(synctex_node_t node) {
+ printf("....boundary:%i,%i:%i,%i\n",
+ SYNCTEX_TAG(node),
+ SYNCTEX_LINE(node),
+ SYNCTEX_HORIZ(node),
+ SYNCTEX_VERT(node));
+ SYNCTEX_DISPLAY(SYNCTEX_SIBLING(node));
+}
+
+# ifdef SYNCTEX_NOTHING
+# pragma mark -
+# pragma mark SCANNER
+# endif
+
+/* Here are gathered all the possible status that the next scanning functions will return.
+ * All these functions return a status, and pass their result through pointers.
+ * Negative values correspond to errors.
+ * The management of the buffer is causing some significant overhead.
+ * Every function that may access the buffer returns a status related to the buffer and file state.
+ * status >= SYNCTEX_STATUS_OK means the function worked as expected
+ * status < SYNCTEX_STATUS_OK means the function did not work as expected
+ * status == SYNCTEX_STATUS_NOT_OK means the function did not work as expected but there is still some material to parse.
+ * status == SYNCTEX_STATUS_EOF means the function did not work as expected and there is no more material.
+ * status<SYNCTEX_STATUS_EOF means an error
+ */
+typedef int synctex_status_t;
+/* When the end of the synctex file has been reached: */
+# define SYNCTEX_STATUS_EOF 0
+/* When the function could not return the value it was asked for: */
+# define SYNCTEX_STATUS_NOT_OK (SYNCTEX_STATUS_EOF+1)
+/* When the function returns the value it was asked for: */
+# define SYNCTEX_STATUS_OK (SYNCTEX_STATUS_NOT_OK+1)
+/* Generic error: */
+# define SYNCTEX_STATUS_ERROR -1
+/* Parameter error: */
+# define SYNCTEX_STATUS_BAD_ARGUMENT -2
+
+# define SYNCTEX_FILE (scanner->file)
+
+/* Actually, the minimum buffer size is driven by integer and float parsing.
+ * ±0.123456789e123
+ */
+# define SYNCTEX_BUFFER_MIN_SIZE 16
+# define SYNCTEX_BUFFER_SIZE 32768
+
+# ifdef SYNCTEX_NOTHING
+# pragma mark -
+# pragma mark Prototypes
+# endif
+void _synctex_log_void_box(synctex_node_t node);
+void _synctex_log_box(synctex_node_t node);
+void _synctex_log_horiz_box(synctex_node_t node);
+void _synctex_log_input(synctex_node_t node);
+synctex_status_t _synctex_buffer_get_available_size(synctex_scanner_t scanner, size_t * size_ptr);
+synctex_status_t _synctex_next_line(synctex_scanner_t scanner);
+synctex_status_t _synctex_match_string(synctex_scanner_t scanner, const char * the_string);
+synctex_status_t _synctex_decode_int(synctex_scanner_t scanner, int* value_ref);
+synctex_status_t _synctex_decode_string(synctex_scanner_t scanner, char ** value_ref);
+synctex_status_t _synctex_scan_input(synctex_scanner_t scanner);
+synctex_status_t _synctex_scan_preamble(synctex_scanner_t scanner);
+synctex_status_t _synctex_scan_float_and_dimension(synctex_scanner_t scanner, float * value_ref);
+synctex_status_t _synctex_scan_post_scriptum(synctex_scanner_t scanner);
+int _synctex_scan_postamble(synctex_scanner_t scanner);
+synctex_status_t _synctex_setup_visible_box(synctex_node_t box);
+synctex_status_t _synctex_horiz_box_setup_visible(synctex_node_t node,int h, int v);
+synctex_status_t _synctex_scan_sheet(synctex_scanner_t scanner, synctex_node_t parent);
+synctex_status_t _synctex_scan_content(synctex_scanner_t scanner);
+int synctex_scanner_pre_x_offset(synctex_scanner_t scanner);
+int synctex_scanner_pre_y_offset(synctex_scanner_t scanner);
+const char * synctex_scanner_get_output_fmt(synctex_scanner_t scanner);
+int _synctex_node_is_box(synctex_node_t node);
+int _synctex_bail(void);
+
+/* Try to ensure that the buffer contains at least size bytes.
+ * Passing a huge size argument means the whole buffer length.
+ * Passing a null size argument means return the available buffer length, without reading the file.
+ * In that case, the return status is always SYNCTEX_STATUS_OK unless the given scanner is NULL,
+ * in which case, SYNCTEX_STATUS_BAD_ARGUMENT is returned.
+ * The value returned in size_ptr is the number of bytes now available in the buffer.
+ * This is a nonnegative integer, it may take the value 0.
+ * It is the responsibility of the caller to test whether this size is conforming to its needs.
+ * Negative values may return in case of error, actually
+ * when there was an error reading the synctex file. */
+synctex_status_t _synctex_buffer_get_available_size(synctex_scanner_t scanner, size_t * size_ptr) {
+ size_t available = 0;
+ if(NULL == scanner || NULL == size_ptr) {
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+ }
+# define size (* size_ptr)
+ if(size>SYNCTEX_BUFFER_SIZE){
+ size = SYNCTEX_BUFFER_SIZE;
+ }
+ available = SYNCTEX_END - SYNCTEX_CUR; /* available is the number of unparsed chars in the buffer */
+ if(size<=available) {
+ /* There are already sufficiently many characters in the buffer */
+ size = available;
+ return SYNCTEX_STATUS_OK;
+ }
+ if(SYNCTEX_FILE) {
+ /* Copy the remaining part of the buffer to the beginning,
+ * then read the next part of the file */
+ int already_read = 0;
+ if(available) {
+ memmove(SYNCTEX_START, SYNCTEX_CUR, available);
+ }
+ SYNCTEX_CUR = SYNCTEX_START + available; /* the next character after the move, will change. */
+ /* Fill the buffer up to its end */
+ already_read = gzread(SYNCTEX_FILE,(void *)SYNCTEX_CUR,SYNCTEX_BUFFER_SIZE - available);
+ if(already_read>0) {
+ /* We assume that 0<already_read<=SYNCTEX_BUFFER_SIZE - available, such that
+ * SYNCTEX_CUR + already_read = SYNCTEX_START + available + already_read <= SYNCTEX_START + SYNCTEX_BUFFER_SIZE */
+ SYNCTEX_END = SYNCTEX_CUR + already_read;
+ /* If the end of the file was reached, all the required SYNCTEX_BUFFER_SIZE - available
+ * may not be filled with values from the file.
+ * In that case, the buffer should stop properly after already_read characters. */
+ * SYNCTEX_END = '\0';
+ SYNCTEX_CUR = SYNCTEX_START;
+ size = SYNCTEX_END - SYNCTEX_CUR; /* == old available + already_read*/
+ return SYNCTEX_STATUS_OK; /* May be available is less than size, the caller will have to test. */
+ } else if(0>already_read) {
+ /* There is an error in zlib */
+ int errnum = 0;
+ const char * error_string = gzerror(SYNCTEX_FILE, &errnum);
+ if(Z_ERRNO == errnum) {
+ /* There is an error in zlib caused by the file system */
+ _synctex_error("gzread error from the file system (%i)",errno);
+ } else {
+ _synctex_error("gzread error (%i:%i,%s)",already_read,errnum,error_string);
+ }
+ return SYNCTEX_STATUS_ERROR;
+ } else {
+ /* Nothing was read, we are at the end of the file. */
+ gzclose(SYNCTEX_FILE);
+ SYNCTEX_FILE = NULL;
+ SYNCTEX_END = SYNCTEX_CUR;
+ SYNCTEX_CUR = SYNCTEX_START;
+ * SYNCTEX_END = '\0';/* Terminate the string properly.*/
+ size = SYNCTEX_END - SYNCTEX_CUR;
+ return SYNCTEX_STATUS_EOF; /* there might be a bit of text left */
+ }
+ /* At this point, the function has already returned from above */
+ }
+ /* We cannot enlarge the buffer because the end of the file was reached. */
+ size = available;
+ return SYNCTEX_STATUS_EOF;
+# undef size
+}
+
+/* Used when parsing the synctex file.
+ * Advance to the next character starting a line.
+ * Actually, only '\n' is recognized as end of line marker.
+ * On normal completion, the returned value is the number of unparsed characters available in the buffer.
+ * In general, it is a positive value, 0 meaning that the end of file was reached.
+ * -1 is returned in case of error, actually because there was an error while feeding the buffer.
+ * When the function returns with no error, SYNCTEX_CUR points to the first character of the next line, if any.
+ * J. Laurens: Sat May 10 07:52:31 UTC 2008
+ */
+synctex_status_t _synctex_next_line(synctex_scanner_t scanner) {
+ synctex_status_t status = SYNCTEX_STATUS_OK;
+ size_t available = 0;
+ if(NULL == scanner) {
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+ }
+infinite_loop:
+ while(SYNCTEX_CUR<SYNCTEX_END) {
+ if(*SYNCTEX_CUR == '\n') {
+ ++SYNCTEX_CUR;
+ available = 1;
+ return _synctex_buffer_get_available_size(scanner, &available);
+ }
+ ++SYNCTEX_CUR;
+ }
+ /* Here, we have SYNCTEX_CUR == SYNCTEX_END, such that the next call to _synctex_buffer_get_available_size
+ * will read another bunch of synctex file. Little by little, we advance to the end of the file. */
+ available = 1;
+ status = _synctex_buffer_get_available_size(scanner, &available);
+ if(status<=0) {
+ return status;
+ }
+ goto infinite_loop;
+}
+
+/* Scan the given string.
+ * Both scanner and the_string must not be NULL, and the_string must not be 0 length.
+ * SYNCTEX_STATUS_OK is returned if the string is found,
+ * SYNCTEX_STATUS_EOF is returned when the EOF is reached,
+ * SYNCTEX_STATUS_NOT_OK is returned is the string is not found,
+ * an error status is returned otherwise.
+ * This is a critical method because buffering renders things more difficult.
+ * The given string might be as long as the maximum size_t value.
+ * As side effect, the buffer state may have changed if the given argument string can't fit into the buffer.
+ */
+synctex_status_t _synctex_match_string(synctex_scanner_t scanner, const char * the_string) {
+ size_t tested_len = 0; /* the number of characters at the beginning of the_string that match */
+ size_t remaining_len = 0; /* the number of remaining characters of the_string that should match */
+ size_t available = 0;
+ synctex_status_t status = 0;
+ if(NULL == scanner || NULL == the_string) {
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+ }
+ remaining_len = strlen(the_string); /* All the_string should match */
+ if(0 == remaining_len) {
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+ }
+ /* How many characters available in the buffer? */
+ available = remaining_len;
+ status = _synctex_buffer_get_available_size(scanner,&available);
+ if(status<SYNCTEX_STATUS_EOF) {
+ return status;
+ }
+ /* Maybe we have less characters than expected because the buffer is too small. */
+ if(available>=remaining_len) {
+ /* The buffer is sufficiently big to hold the expected number of characters. */
+ if(strncmp((char *)SYNCTEX_CUR,the_string,remaining_len)) {
+ return SYNCTEX_STATUS_NOT_OK;
+ }
+return_OK:
+ /* Advance SYNCTEX_CUR to the next character after the_string. */
+ SYNCTEX_CUR += remaining_len;
+ return SYNCTEX_STATUS_OK;
+ } else if(strncmp((char *)SYNCTEX_CUR,the_string,available)) {
+ /* No need to goo further, this is not the expected string in the buffer. */
+ return SYNCTEX_STATUS_NOT_OK;
+ } else if(SYNCTEX_FILE) {
+ /* The buffer was too small to contain remaining_len characters.
+ * We have to cut the string into pieces. */
+ z_off_t offset = 0L;
+ /* the first part of the string is found, advance the_string to the next untested character. */
+ the_string += available;
+ /* update the remaining length and the parsed length. */
+ remaining_len -= available;
+ tested_len += available;
+ SYNCTEX_CUR += available; /* We validate the tested characters. */
+ if(0 == remaining_len) {
+ /* Nothing left to test, we have found the given string, we return the length. */
+ return tested_len;
+ }
+ /* We also have to record the current state of the file cursor because
+ * if the_string does not match, all this should be a totally blank operation,
+ * for which the file and buffer states should not be modified at all.
+ * In fact, the states of the buffer before and after this function are in general different
+ * but they are totally equivalent as long as the values of the buffer before SYNCTEX_CUR
+ * can be safely discarded. */
+ offset = gztell(SYNCTEX_FILE);
+ /* offset now corresponds to the first character of the file that was not buffered. */
+ available = SYNCTEX_CUR - SYNCTEX_START; /* available can be used as temporary placeholder. */
+ /* available now corresponds to the number of chars that where already buffered and
+ * that match the head of the_string. If in fine the_string does not match, all these chars must be recovered
+ * because the buffer contents is completely replaced by _synctex_buffer_get_available_size.
+ * They were buffered from offset-len location in the file. */
+ offset -= available;
+more_characters:
+ /* There is still some work to be done, so read another bunch of file.
+ * This is the second call to _synctex_buffer_get_available_size,
+ * which means that the actual contents of the buffer will be discarded.
+ * We will definitely have to recover the previous state in case we do not find the expected string. */
+ available = remaining_len;
+ status = _synctex_buffer_get_available_size(scanner,&available);
+ if(status<SYNCTEX_STATUS_EOF) {
+ return status; /* This is an error, no need to go further. */
+ }
+ if(available==0) {
+ /* Missing characters: recover the initial state of the file and return. */
+return_NOT_OK:
+ if(offset != gzseek(SYNCTEX_FILE,offset,SEEK_SET)) {
+ /* This is a critical error, we could not recover the previous state. */
+ _synctex_error("can't seek file");
+ return SYNCTEX_STATUS_ERROR;
+ }
+ /* Next time we are asked to fill the buffer,
+ * we will read a complete bunch of text from the file. */
+ SYNCTEX_CUR = SYNCTEX_END;
+ return SYNCTEX_STATUS_NOT_OK;
+ }
+ if(available<remaining_len) {
+ /* We'll have to loop one more time. */
+ if(strncmp((char *)SYNCTEX_CUR,the_string,available)) {
+ /* This is not the expected string, recover the previous state and return. */
+ goto return_NOT_OK;
+ }
+ /* Advance the_string to the first untested character. */
+ the_string += available;
+ /* update the remaining length and the parsed length. */
+ remaining_len -= available;
+ tested_len += available;
+ SYNCTEX_CUR += available; /* We validate the tested characters. */
+ if(0 == remaining_len) {
+ /* Nothing left to test, we have found the given string. */
+ return SYNCTEX_STATUS_OK;
+ }
+ goto more_characters;
+ }
+ /* This is the last step. */
+ if(strncmp((char *)SYNCTEX_CUR,the_string,remaining_len)) {
+ /* This is not the expected string, recover the previous state and return. */
+ goto return_NOT_OK;
+ }
+ goto return_OK;
+ } else {
+ /* The buffer can't contain the given string argument, and the EOF was reached */
+ return SYNCTEX_STATUS_EOF;
+ }
+}
+
+/* Used when parsing the synctex file.
+ * Decode an integer.
+ * First, field separators, namely ':' and ',' characters are skipped
+ * The returned value is negative if there is an unrecoverable error.
+ * It is SYNCTEX_STATUS_NOT_OK if an integer could not be parsed, for example
+ * if the characters at the current cursor position are not digits or
+ * if the end of the file has been reached.
+ * It is SYNCTEX_STATUS_OK if an int has been successfully parsed.
+ * The given scanner argument must not be NULL, on the contrary, value_ref may be NULL.
+ */
+synctex_status_t _synctex_decode_int(synctex_scanner_t scanner, int* value_ref) {
+ char * ptr = NULL;
+ char * end = NULL;
+ int result = 0;
+ size_t available = 0;
+ synctex_status_t status = 0;
+ if(NULL == scanner) {
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+ }
+ available = SYNCTEX_BUFFER_MIN_SIZE;
+ status = _synctex_buffer_get_available_size(scanner, &available);
+ if(status<SYNCTEX_STATUS_EOF) {
+ return status;/* Forward error. */
+ }
+ if(available==0) {
+ return SYNCTEX_STATUS_EOF;/* it is the end of file. */
+ }
+ ptr = SYNCTEX_CUR;
+ if(*ptr==':' || *ptr==',') {
+ ++ptr;
+ --available;
+ if(available==0) {
+ return SYNCTEX_STATUS_NOT_OK;/* It is not possible to scan an int */
+ }
+ }
+ result = (int)strtol(ptr, &end, 10);
+ if(end>ptr) {
+ SYNCTEX_CUR = end;
+ if(value_ref) {
+ * value_ref = result;
+ }
+ return SYNCTEX_STATUS_OK;/* Successfully scanned an int */
+ }
+ return SYNCTEX_STATUS_NOT_OK;/* Could not scan an int */
+}
+
+/* The purpose of this function is to read a string.
+ * A string is an array of characters from the current parser location
+ * and before the next '\n' character.
+ * If a string was properly decoded, it is returned in value_ref and
+ * the cursor points to the new line marker.
+ * The returned string was alloced on the heap, the caller is the owner and
+ * is responsible to free it in due time.
+ * If no string is parsed, * value_ref is undefined.
+ * The maximum length of a string that a scanner can decode is platform dependent, namely UINT_MAX.
+ * If you just want to blindly parse the file up to the end of the current line,
+ * use _synctex_next_line instead.
+ * On return, the scanner cursor is unchanged if a string could not be scanned or
+ * points to the terminating '\n' character otherwise. As a consequence,
+ * _synctex_next_line is necessary after.
+ * If either scanner or value_ref is NULL, it is considered as an error and
+ * SYNCTEX_STATUS_BAD_ARGUMENT is returned.
+ */
+synctex_status_t _synctex_decode_string(synctex_scanner_t scanner, char ** value_ref) {
+ char * end = NULL;
+ size_t current_size = 0;
+ size_t new_size = 0;
+ size_t len = 0;/* The number of bytes to copy */
+ size_t available = 0;
+ synctex_status_t status = 0;
+ if(NULL == scanner || NULL == value_ref) {
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+ }
+ /* The buffer must at least contain one character: the '\n' end of line marker */
+ if(SYNCTEX_CUR>=SYNCTEX_END) {
+ available = 1;
+ status = _synctex_buffer_get_available_size(scanner,&available);
+ if(status < 0) {
+ return status;
+ }
+ if(0 == available) {
+ return SYNCTEX_STATUS_EOF;
+ }
+ }
+ /* Now we are sure that there is at least one available character, either because
+ * SYNCTEX_CUR was already < SYNCTEX_END, or because the buffer has been properly filled. */
+ /* end will point to the next unparsed '\n' character in the file, when mapped to the buffer. */
+ end = SYNCTEX_CUR;
+ * value_ref = NULL;/* Initialize, it will be realloc'ed */
+ /* We scan all the characters up to the next '\n' */
+next_character:
+ if(end<SYNCTEX_END) {
+ if(*end == '\n') {
+ /* OK, we found where to stop */
+ len = end - SYNCTEX_CUR;
+ if(current_size>UINT_MAX-len-1) {
+ /* But we have reached the limit: we do not have current_size+len+1>UINT_MAX.
+ * We return the missing amount of memory.
+ * This will never occur in practice. */
+ return UINT_MAX-len-1 - current_size;
+ }
+ new_size = current_size+len;
+ /* We have current_size+len+1<=UINT_MAX
+ * or equivalently new_size<UINT_MAX,
+ * where we have assumed that len<UINT_MAX */
+ if((* value_ref = realloc(* value_ref,new_size+1)) != NULL) {
+ if(memcpy((*value_ref)+current_size,SYNCTEX_CUR,len)) {
+ (* value_ref)[new_size]='\0'; /* Terminate the string */
+ SYNCTEX_CUR += len;/* Advance to the terminating '\n' */
+ return SYNCTEX_STATUS_OK;
+ }
+ free(* value_ref);
+ * value_ref = NULL;
+ _synctex_error("could not copy memory (1).");
+ return SYNCTEX_STATUS_ERROR;
+ }
+ _synctex_error("could not allocate memory (1).");
+ return SYNCTEX_STATUS_ERROR;
+ } else {
+ ++end;
+ goto next_character;
+ }
+ } else {
+ /* end == SYNCTEX_END */
+ len = SYNCTEX_END - SYNCTEX_CUR;
+ if(current_size>UINT_MAX-len-1) {
+ /* We have reached the limit. */
+ _synctex_error("limit reached (missing %i).",current_size-(UINT_MAX-len-1));
+ return SYNCTEX_STATUS_ERROR;
+ }
+ new_size = current_size+len;
+ if((* value_ref = realloc(* value_ref,new_size+1)) != NULL) {
+ if(memcpy((*value_ref)+current_size,SYNCTEX_CUR,len)) {
+ (* value_ref)[new_size]='\0'; /* Terminate the string */
+ SYNCTEX_CUR = SYNCTEX_END;/* Advance the cursor to the end of the bufer */
+ return SYNCTEX_STATUS_OK;
+ }
+ free(* value_ref);
+ * value_ref = NULL;
+ _synctex_error("could not copy memory (2).");
+ return SYNCTEX_STATUS_ERROR;
+ }
+ /* Huge memory problem */
+ _synctex_error("could not allocate memory (2).");
+ return SYNCTEX_STATUS_ERROR;
+ }
+}
+
+/* Used when parsing the synctex file.
+ * Read an Input record.
+ */
+synctex_status_t _synctex_scan_input(synctex_scanner_t scanner) {
+ synctex_status_t status = 0;
+ size_t available = 0;
+ synctex_node_t input = NULL;
+ if(NULL == scanner) {
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+ }
+ status = _synctex_match_string(scanner,"Input:");
+ if(status<SYNCTEX_STATUS_OK) {
+ return status;
+ }
+ /* Create a node */
+ input = _synctex_new_input(scanner);
+ if(NULL == input) {
+ _synctex_error("could not create an input node.");
+ return SYNCTEX_STATUS_ERROR;
+ }
+ /* Decode the synctag */
+ status = _synctex_decode_int(scanner,&(SYNCTEX_TAG(input)));
+ if(status<SYNCTEX_STATUS_OK) {
+ _synctex_error("bad format of input node.");
+ SYNCTEX_FREE(input);
+ return status;
+ }
+ /* The next character is a field separator, we expect one character in the buffer. */
+ available = 1;
+ status = _synctex_buffer_get_available_size(scanner, &available);
+ if(status<=SYNCTEX_STATUS_ERROR) {
+ return status;
+ }
+ if(0 == available) {
+ return SYNCTEX_STATUS_EOF;
+ }
+ /* We can now safely advance to the next character, stepping over the field separator. */
+ ++SYNCTEX_CUR;
+ --available;
+ /* Then we scan the file name */
+ status = _synctex_decode_string(scanner,&(SYNCTEX_NAME(input)));
+ if(status<SYNCTEX_STATUS_OK) {
+ SYNCTEX_FREE(input);
+ return status;
+ }
+ /* Prepend this input node to the input linked list of the scanner */
+ SYNCTEX_SET_SIBLING(input,scanner->input);
+ scanner->input = input;
+ return _synctex_next_line(scanner);/* read the line termination character, if any */
+ /* Now, set up the path */
+}
+
+typedef synctex_status_t (*synctex_decoder_t)(synctex_scanner_t,void *);
+
+synctex_status_t _synctex_scan_named(synctex_scanner_t scanner,const char * name,void * value_ref,synctex_decoder_t decoder);
+
+/* Used when parsing the synctex file.
+ * Read one of the settings.
+ * On normal completion, returns SYNCTEX_STATUS_OK.
+ * On error, returns SYNCTEX_STATUS_ERROR.
+ * Both arguments must not be NULL.
+ * On return, the scanner points to the next character after the decoded object whatever it is.
+ * It is the responsibility of the caller to prepare the scanner for the next line.
+ */
+synctex_status_t _synctex_scan_named(synctex_scanner_t scanner,const char * name,void * value_ref,synctex_decoder_t decoder) {
+ synctex_status_t status = 0;
+ if(NULL == scanner || NULL == name || NULL == value_ref || NULL == decoder) {
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+ }
+not_found:
+ status = _synctex_match_string(scanner,name);
+ if(status<SYNCTEX_STATUS_NOT_OK) {
+ return status;
+ } else if(status == SYNCTEX_STATUS_NOT_OK) {
+ status = _synctex_next_line(scanner);
+ if(status<SYNCTEX_STATUS_OK) {
+ return status;
+ }
+ goto not_found;
+ }
+ /* A line is found, scan the value */
+ return (*decoder)(scanner,value_ref);
+}
+
+/* Used when parsing the synctex file.
+ * Read the preamble.
+ */
+synctex_status_t _synctex_scan_preamble(synctex_scanner_t scanner) {
+ synctex_status_t status = 0;
+ if(NULL == scanner) {
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+ }
+ status = _synctex_scan_named(scanner,"SyncTeX Version:",&(scanner->version),(synctex_decoder_t)&_synctex_decode_int);
+ if(status<SYNCTEX_STATUS_OK) {
+ return status;
+ }
+ status = _synctex_next_line(scanner);
+ if(status<SYNCTEX_STATUS_OK) {
+ return status;
+ }
+ /* Read all the input records */
+ do {
+ status = _synctex_scan_input(scanner);
+ if(status<SYNCTEX_STATUS_NOT_OK) {
+ return status;
+ }
+ } while(status == SYNCTEX_STATUS_OK);
+ /* the loop exits when status == SYNCTEX_STATUS_NOT_OK */
+ /* Now read all the required settings. */
+ status = _synctex_scan_named(scanner,"Output:",&(scanner->output_fmt),(synctex_decoder_t)&_synctex_decode_string);
+ if(status<SYNCTEX_STATUS_NOT_OK) {
+ return status;
+ }
+ status = _synctex_next_line(scanner);
+ if(status<SYNCTEX_STATUS_OK) {
+ return status;
+ }
+ status = _synctex_scan_named(scanner,"Magnification:",&(scanner->pre_magnification),(synctex_decoder_t)&_synctex_decode_int);
+ if(status<SYNCTEX_STATUS_OK) {
+ return status;
+ }
+ status = _synctex_next_line(scanner);
+ if(status<SYNCTEX_STATUS_OK) {
+ return status;
+ }
+ status = _synctex_scan_named(scanner,"Unit:",&(scanner->pre_unit),(synctex_decoder_t)&_synctex_decode_int);
+ if(status<SYNCTEX_STATUS_OK) {
+ return status;
+ }
+ status = _synctex_next_line(scanner);
+ if(status<SYNCTEX_STATUS_OK) {
+ return status;
+ }
+ status = _synctex_scan_named(scanner,"X Offset:",&(scanner->pre_x_offset),(synctex_decoder_t)&_synctex_decode_int);
+ if(status<SYNCTEX_STATUS_OK) {
+ return status;
+ }
+ status = _synctex_next_line(scanner);
+ if(status<SYNCTEX_STATUS_OK) {
+ return status;
+ }
+ status = _synctex_scan_named(scanner,"Y Offset:",&(scanner->pre_y_offset),(synctex_decoder_t)&_synctex_decode_int);
+ if(status<SYNCTEX_STATUS_OK) {
+ return status;
+ }
+ return _synctex_next_line(scanner);
+}
+
+/* parse a float with a dimension */
+synctex_status_t _synctex_scan_float_and_dimension(synctex_scanner_t scanner, float * value_ref) {
+ synctex_status_t status = 0;
+ char * endptr = NULL;
+ float f = 0;
+#ifdef HAVE_SETLOCALE
+ char * loc = setlocale(LC_NUMERIC, NULL);
+#endif
+ size_t available = 0;
+ if(NULL == scanner || NULL == value_ref) {
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+ }
+ available = SYNCTEX_BUFFER_MIN_SIZE;
+ status = _synctex_buffer_get_available_size(scanner, &available);
+ if(status<SYNCTEX_STATUS_EOF) {
+ _synctex_error("problem with float.");
+ return status;
+ }
+#ifdef HAVE_SETLOCALE
+ setlocale(LC_NUMERIC, "C");
+#endif
+ f = strtod(SYNCTEX_CUR,&endptr);
+#ifdef HAVE_SETLOCALE
+ setlocale(LC_NUMERIC, loc);
+#endif
+ if(endptr == SYNCTEX_CUR) {
+ _synctex_error("a float was expected.");
+ return SYNCTEX_STATUS_ERROR;
+ }
+ SYNCTEX_CUR = endptr;
+ if((status = _synctex_match_string(scanner,"in")) >= SYNCTEX_STATUS_OK) {
+ f *= 72.27f*65536;
+ } else if(status<SYNCTEX_STATUS_EOF) {
+report_unit_error:
+ _synctex_error("problem with unit.");
+ return status;
+ } else if((status = _synctex_match_string(scanner,"cm")) >= SYNCTEX_STATUS_OK) {
+ f *= 72.27f*65536/2.54f;
+ } else if(status<0) {
+ goto report_unit_error;
+ } else if((status = _synctex_match_string(scanner,"mm")) >= SYNCTEX_STATUS_OK) {
+ f *= 72.27f*65536/25.4f;
+ } else if(status<0) {
+ goto report_unit_error;
+ } else if((status = _synctex_match_string(scanner,"pt")) >= SYNCTEX_STATUS_OK) {
+ f *= 65536.0f;
+ } else if(status<0) {
+ goto report_unit_error;
+ } else if((status = _synctex_match_string(scanner,"bp")) >= SYNCTEX_STATUS_OK) {
+ f *= 72.27f/72*65536.0f;
+ } else if(status<0) {
+ goto report_unit_error;
+ } else if((status = _synctex_match_string(scanner,"pc")) >= SYNCTEX_STATUS_OK) {
+ f *= 12.0*65536.0f;
+ } else if(status<0) {
+ goto report_unit_error;
+ } else if((status = _synctex_match_string(scanner,"sp")) >= SYNCTEX_STATUS_OK) {
+ f *= 1.0f;
+ } else if(status<0) {
+ goto report_unit_error;
+ } else if((status = _synctex_match_string(scanner,"dd")) >= SYNCTEX_STATUS_OK) {
+ f *= 1238.0f/1157*65536.0f;
+ } else if(status<0) {
+ goto report_unit_error;
+ } else if((status = _synctex_match_string(scanner,"cc")) >= SYNCTEX_STATUS_OK) {
+ f *= 14856.0f/1157*65536;
+ } else if(status<0) {
+ goto report_unit_error;
+ } else if((status = _synctex_match_string(scanner,"nd")) >= SYNCTEX_STATUS_OK) {
+ f *= 685.0f/642*65536;
+ } else if(status<0) {
+ goto report_unit_error;
+ } else if((status = _synctex_match_string(scanner,"nc")) >= SYNCTEX_STATUS_OK) {
+ f *= 1370.0f/107*65536;
+ } else if(status<0) {
+ goto report_unit_error;
+ }
+ *value_ref = f;
+ return SYNCTEX_STATUS_OK;
+}
+
+/* parse the post scriptum
+ * SYNCTEX_STATUS_OK is returned on completion
+ * a negative error is returned otherwise */
+synctex_status_t _synctex_scan_post_scriptum(synctex_scanner_t scanner) {
+ synctex_status_t status = 0;
+ char * endptr = NULL;
+#ifdef HAVE_SETLOCALE
+ char * loc = setlocale(LC_NUMERIC, NULL);
+#endif
+ if(NULL == scanner) {
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+ }
+ /* Scan the file until a post scriptum line is found */
+post_scriptum_not_found:
+ status = _synctex_match_string(scanner,"Post scriptum:");
+ if(status<SYNCTEX_STATUS_NOT_OK) {
+ return status;
+ }
+ if(status == SYNCTEX_STATUS_NOT_OK) {
+ status = _synctex_next_line(scanner);
+ if(status<SYNCTEX_STATUS_EOF) {
+ return status;
+ } else if(status<SYNCTEX_STATUS_OK) {
+ return SYNCTEX_STATUS_OK;/* The EOF is found, we have properly scanned the file */
+ }
+ goto post_scriptum_not_found;
+ }
+ /* We found the name, advance to the next line. */
+next_line:
+ status = _synctex_next_line(scanner);
+ if(status<SYNCTEX_STATUS_EOF) {
+ return status;
+ } else if(status<SYNCTEX_STATUS_OK) {
+ return SYNCTEX_STATUS_OK;/* The EOF is found, we have properly scanned the file */
+ }
+ /* Scanning the information */
+ status = _synctex_match_string(scanner,"Magnification:");
+ if(status == SYNCTEX_STATUS_OK ) {
+#ifdef HAVE_SETLOCALE
+ setlocale(LC_NUMERIC, "C");
+#endif
+ scanner->unit = strtod(SYNCTEX_CUR,&endptr);
+#ifdef HAVE_SETLOCALE
+ setlocale(LC_NUMERIC, loc);
+#endif
+ if(endptr == SYNCTEX_CUR) {
+ _synctex_error("bad magnification in the post scriptum, a float was expected.");
+ return SYNCTEX_STATUS_ERROR;
+ }
+ if(scanner->unit<=0) {
+ _synctex_error("bad magnification in the post scriptum, a positive float was expected.");
+ return SYNCTEX_STATUS_ERROR;
+ }
+ SYNCTEX_CUR = endptr;
+ goto next_line;
+ }
+ if(status<SYNCTEX_STATUS_EOF){
+report_record_problem:
+ _synctex_error("Problem reading the Post Scriptum records");
+ return status; /* echo the error. */
+ }
+ status = _synctex_match_string(scanner,"X Offset:");
+ if(status == SYNCTEX_STATUS_OK) {
+ status = _synctex_scan_float_and_dimension(scanner, &(scanner->x_offset));
+ if(status<SYNCTEX_STATUS_OK) {
+ _synctex_error("problem with X offset in the Post Scriptum.");
+ return status;
+ }
+ goto next_line;
+ } else if(status<SYNCTEX_STATUS_EOF){
+ goto report_record_problem;
+ }
+ status = _synctex_match_string(scanner,"Y Offset:");
+ if(status==SYNCTEX_STATUS_OK) {
+ status = _synctex_scan_float_and_dimension(scanner, &(scanner->y_offset));
+ if(status<SYNCTEX_STATUS_OK) {
+ _synctex_error("problem with Y offset in the Post Scriptum.");
+ return status;
+ }
+ goto next_line;
+ } else if(status<SYNCTEX_STATUS_EOF){
+ goto report_record_problem;
+ }
+ goto next_line;
+}
+
+/* SYNCTEX_STATUS_OK is returned if the postamble is read
+ * SYNCTEX_STATUS_NOT_OK is returned if the postamble is not at the current location
+ * a negative error otherwise
+ * The postamble comprises the post scriptum section.
+ */
+int _synctex_scan_postamble(synctex_scanner_t scanner) {
+ int status = 0;
+ if(NULL == scanner) {
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+ }
+ status = _synctex_match_string(scanner,"Postamble:");
+ if(status < SYNCTEX_STATUS_OK) {
+ return status;
+ }
+count_again:
+ status = _synctex_next_line(scanner);
+ if(status < SYNCTEX_STATUS_OK) {
+ return status;
+ }
+ status = _synctex_scan_named(scanner,"Count:",&(scanner->count),(synctex_decoder_t)&_synctex_decode_int);
+ if(status < SYNCTEX_STATUS_EOF) {
+ return status; /* forward the error */
+ } else if(status < SYNCTEX_STATUS_OK) { /* No Count record found */
+ status = _synctex_next_line(scanner); /* Advance one more line */
+ if(status<SYNCTEX_STATUS_OK) {
+ return status;
+ }
+ goto count_again;
+ }
+ /* Now we scan the last part of the SyncTeX file: the Post Scriptum section. */
+ return _synctex_scan_post_scriptum(scanner);
+}
+
+/* Horizontal boxes also have visible size.
+ * Visible size are bigger than real size.
+ * For example 0 width boxes may contain text.
+ * At creation time, the visible size is set to the values of the real size.
+ */
+synctex_status_t _synctex_setup_visible_box(synctex_node_t box) {
+ if(box) {
+ switch(box->class->type) {
+ case synctex_node_type_hbox:
+ if(SYNCTEX_INFO(box) != NULL) {
+ SYNCTEX_HORIZ_V(box) = SYNCTEX_HORIZ(box);
+ SYNCTEX_VERT_V(box) = SYNCTEX_VERT(box);
+ SYNCTEX_WIDTH_V(box) = SYNCTEX_WIDTH(box);
+ SYNCTEX_HEIGHT_V(box) = SYNCTEX_HEIGHT(box);
+ SYNCTEX_DEPTH_V(box) = SYNCTEX_DEPTH(box);
+ return SYNCTEX_STATUS_OK;
+ }
+ return SYNCTEX_STATUS_ERROR;
+ }
+ }
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+}
+
+/* This method is sent to an horizontal box to setup the visible size
+ * Some box have 0 width but do contain text material.
+ * With this method, one can enlarge the box to contain the given point (h,v).
+ */
+synctex_status_t _synctex_horiz_box_setup_visible(synctex_node_t node,int h, int v) {
+# ifdef __DARWIN_UNIX03
+# pragma unused(v)
+# endif
+ int itsBtm, itsTop;
+ if(NULL == node || node->class->type != synctex_node_type_hbox) {
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+ }
+ if(SYNCTEX_WIDTH_V(node)<0) {
+ itsBtm = SYNCTEX_HORIZ_V(node);
+ itsTop = SYNCTEX_HORIZ_V(node)-SYNCTEX_WIDTH_V(node);
+ if(h<itsBtm) {
+ SYNCTEX_HORIZ_V(node) = h;
+ SYNCTEX_WIDTH_V(node) = SYNCTEX_HORIZ_V(node) - itsTop;
+ } else if(h>itsTop) {
+ SYNCTEX_WIDTH_V(node) = SYNCTEX_HORIZ_V(node) - h;
+ }
+ } else {
+ itsBtm = SYNCTEX_HORIZ_V(node);
+ itsTop = SYNCTEX_HORIZ_V(node)+SYNCTEX_WIDTH_V(node);
+ if(h<itsBtm) {
+ SYNCTEX_HORIZ_V(node) = h;
+ SYNCTEX_WIDTH_V(node) = itsTop - SYNCTEX_HORIZ_V(node);
+ } else if(h>itsTop) {
+ SYNCTEX_WIDTH_V(node) = h - SYNCTEX_HORIZ_V(node);
+ }
+ }
+ return SYNCTEX_STATUS_OK;
+}
+
+/* Used when parsing the synctex file.
+ * The sheet argument is a newly created sheet node that will hold the contents.
+ * Something is returned in case of error.
+ */
+synctex_status_t _synctex_scan_sheet(synctex_scanner_t scanner, synctex_node_t sheet) {
+ synctex_node_t parent = sheet;
+ synctex_node_t child = NULL;
+ synctex_node_t sibling = NULL;
+ synctex_node_t box = sheet;
+ int friend_index = 0;
+ synctex_info_t * info = NULL;
+ synctex_status_t status = 0;
+ size_t available = 0;
+ if((NULL == scanner) || (NULL == sheet)) {
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+ }
+ /* We MUST start with a box, so at this level, the unique possibility is '[', '(' or "}". */
+prepare_loop:
+ if(SYNCTEX_CUR<SYNCTEX_END) {
+ if(*SYNCTEX_CUR == '[') {
+scan_vbox:
+ ++SYNCTEX_CUR;
+ if((child = _synctex_new_vbox(scanner)) && (info = SYNCTEX_INFO(child))) {
+# define SYNCTEX_DECODE_FAILED(WHAT) \
+ (_synctex_decode_int(scanner,&(info[WHAT].INT))<SYNCTEX_STATUS_OK)
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_WIDTH_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HEIGHT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_DEPTH_IDX)
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad vbox record.");
+ #define SYNCTEX_RETURN(STATUS) return STATUS;
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_SET_CHILD(parent,child);
+ parent = child;
+ child = NULL;
+ goto child_loop;/* next created node will be a child */
+ } else {
+ _synctex_error("Can't create vbox record.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == '(') {
+scan_hbox:
+ ++SYNCTEX_CUR;
+ if((child = _synctex_new_hbox(scanner)) && (info = SYNCTEX_INFO(child))) {
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_WIDTH_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HEIGHT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_DEPTH_IDX)
+ || _synctex_setup_visible_box(child)<SYNCTEX_STATUS_OK
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad hbox record.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child),SYNCTEX_VERT(child));
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child)+SYNCTEX_ABS_WIDTH(child),SYNCTEX_VERT(child));
+ SYNCTEX_SET_CHILD(parent,child);
+ parent = child;
+ child = NULL;
+ goto child_loop;/* next created node will be a child */
+ } else {
+ _synctex_error("Can't create hbox record.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == '}') {
+scan_teehs:
+ ++SYNCTEX_CUR;
+ if(NULL == parent || parent->class->type != synctex_node_type_sheet
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Unexpected end of sheet.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_RETURN(SYNCTEX_STATUS_OK);
+ } else if(*SYNCTEX_CUR == '!') {
+scan_anchor:
+ ++SYNCTEX_CUR;
+ if(_synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Missing anchor.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ goto prepare_loop;
+ } else {
+ /* _synctex_error("Ignored record %c\n",*SYNCTEX_CUR); */
+ ++SYNCTEX_CUR;
+ if(_synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Unexpected end.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ goto prepare_loop;
+ }
+ } else {
+ available = 1;
+ status = _synctex_buffer_get_available_size(scanner,&available);
+ if(status<SYNCTEX_STATUS_OK && available>0){
+ _synctex_error("Uncomplete sheet(0)");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ } else {
+ goto prepare_loop;
+ }
+ }
+ _synctex_bail();
+/* The child loop means that we go do one level, when we just created a box node,
+ * the next node created is a child of this box. */
+child_loop:
+ if(SYNCTEX_CUR<SYNCTEX_END) {
+ if(*SYNCTEX_CUR == '[') {
+ goto scan_vbox;
+ } else if(*SYNCTEX_CUR == ']') {
+scan_xobv:
+ ++SYNCTEX_CUR;
+ if(NULL != parent && parent->class->type == synctex_node_type_vbox) {
+ #define SYNCTEX_UPDATE_BOX_FRIEND(NODE)\
+ friend_index = ((SYNCTEX_INFO(NODE))[SYNCTEX_TAG_IDX].INT+(SYNCTEX_INFO(NODE))[SYNCTEX_LINE_IDX].INT)%(scanner->number_of_lists);\
+ SYNCTEX_SET_FRIEND(NODE,(scanner->lists_of_friends)[friend_index]);\
+ (scanner->lists_of_friends)[friend_index] = NODE;
+ if(NULL == SYNCTEX_CHILD(parent)) {
+ /* only void boxes are friends */
+ SYNCTEX_UPDATE_BOX_FRIEND(parent);
+ }
+ child = parent;
+ parent = SYNCTEX_PARENT(child);
+ } else {
+ _synctex_error("Unexpected ']', ignored.");
+ }
+ if(_synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Uncomplete sheet.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ goto sibling_loop;
+ } else if(*SYNCTEX_CUR == '(') {
+ goto scan_hbox;
+ } else if(*SYNCTEX_CUR == ')') {
+scan_xobh:
+ ++SYNCTEX_CUR;
+ if((parent) && parent->class->type == synctex_node_type_hbox) {
+ if(NULL == child) {
+ /* Only boxes with no children are friends,
+ * boxes with children are indirectly friends through one of their descendants. */
+ SYNCTEX_UPDATE_BOX_FRIEND(parent);
+ }
+ /* setting the next horizontal box at the end ensures that a child is recorded before any of its ancestors. */
+ SYNCTEX_SET_NEXT_HORIZ_BOX(box,parent);
+ box = parent;
+ child = parent;
+ parent = SYNCTEX_PARENT(child);
+ } else {
+ _synctex_error("Unexpected ')', ignored.");
+ }
+ if(_synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Uncomplete sheet.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ goto sibling_loop;
+ } else if(*SYNCTEX_CUR == 'v') {
+ ++SYNCTEX_CUR;
+ if(NULL != (child = _synctex_new_void_vbox(scanner))
+ && NULL != (info = SYNCTEX_INFO(child))) {
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_WIDTH_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HEIGHT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_DEPTH_IDX)
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad void vbox record.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_SET_CHILD(parent,child);
+ #define SYNCTEX_UPDATE_FRIEND(NODE)\
+ friend_index = (info[SYNCTEX_TAG_IDX].INT+info[SYNCTEX_LINE_IDX].INT)%(scanner->number_of_lists);\
+ SYNCTEX_SET_FRIEND(NODE,(scanner->lists_of_friends)[friend_index]);\
+ (scanner->lists_of_friends)[friend_index] = NODE;
+ SYNCTEX_UPDATE_FRIEND(child);
+ goto sibling_loop;
+ } else {
+ _synctex_error("Can't create vbox record.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == 'h') {
+ ++SYNCTEX_CUR;
+ if(NULL != (child = _synctex_new_void_hbox(scanner))
+ && NULL != (info = SYNCTEX_INFO(child))) {
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_WIDTH_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HEIGHT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_DEPTH_IDX)
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad void hbox record.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_SET_CHILD(parent,child);
+ SYNCTEX_UPDATE_FRIEND(child);
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child),SYNCTEX_VERT(child));
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child)+SYNCTEX_ABS_WIDTH(child),SYNCTEX_VERT(child));
+ goto sibling_loop;
+ } else {
+ _synctex_error("Can't create void hbox record.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == 'k') {
+ ++SYNCTEX_CUR;
+ if(NULL != (child = _synctex_new_kern(scanner))
+ && NULL != (info = SYNCTEX_INFO(child))) {
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_WIDTH_IDX)
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad kern record.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_SET_CHILD(parent,child);
+ SYNCTEX_UPDATE_FRIEND(child);
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child),SYNCTEX_VERT(child));
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child)-SYNCTEX_WIDTH(child),SYNCTEX_VERT(child));
+ goto sibling_loop;
+ } else {
+ _synctex_error("Can't create kern record.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == 'g') {
+ ++SYNCTEX_CUR;
+ if(NULL != (child = _synctex_new_glue(scanner))
+ && NULL != (info = SYNCTEX_INFO(child))) {
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad glue record.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_SET_CHILD(parent,child);
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child),SYNCTEX_VERT(child));
+ SYNCTEX_UPDATE_FRIEND(child);
+ goto sibling_loop;
+ } else {
+ _synctex_error("Can't create glue record.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == '$') {
+ ++SYNCTEX_CUR;
+ if(NULL != (child = _synctex_new_math(scanner))
+ && NULL != (info = SYNCTEX_INFO(child))) {
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad math record.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_SET_CHILD(parent,child);
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child),SYNCTEX_VERT(child));
+ SYNCTEX_UPDATE_FRIEND(child);
+ goto sibling_loop;
+ } else {
+ _synctex_error("Can't create math record.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == 'x') {
+ ++SYNCTEX_CUR;
+ if(NULL != (child = _synctex_new_boundary(scanner))
+ && NULL != (info = SYNCTEX_INFO(child))) {
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad boundary record.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_SET_CHILD(parent,child);
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child),SYNCTEX_VERT(child));
+ SYNCTEX_UPDATE_FRIEND(child);
+ goto sibling_loop;
+ } else {
+ _synctex_error("Can't create math record.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == '}') {
+ goto scan_teehs;
+ } else if(*SYNCTEX_CUR == '!') {
+ goto scan_anchor;
+ } else {
+ /* _synctex_error("Ignored record %c\n",*SYNCTEX_CUR); */
+ ++SYNCTEX_CUR;
+ if(_synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Unexpected end.");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ goto child_loop;
+ }
+ } else {
+ available = 1;
+ status = _synctex_buffer_get_available_size(scanner,&available);
+ if(status<SYNCTEX_STATUS_OK && available>0){
+ _synctex_error("Uncomplete sheet(0)");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ } else {
+ goto child_loop;
+ }
+ }
+ _synctex_bail();
+/* The vertical loop means that we are on the same level, for example when we just ended a box.
+ * If a node is created now, it will be a sibling of the current node, sharing the same parent. */
+sibling_loop:
+ if(SYNCTEX_CUR<SYNCTEX_END) {
+ if(*SYNCTEX_CUR == '[') {
+ ++SYNCTEX_CUR;
+ if(NULL != (sibling = _synctex_new_vbox(scanner))
+ && NULL != (info = SYNCTEX_INFO(sibling))) {
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_WIDTH_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HEIGHT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_DEPTH_IDX)
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad vbox record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_SET_SIBLING(child,sibling);
+ parent = sibling;
+ child = NULL;
+ goto child_loop;
+ } else {
+ _synctex_error("Can't create vbox record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == ']') {
+ goto scan_xobv;
+ } else if(*SYNCTEX_CUR == '(') {
+ ++SYNCTEX_CUR;
+ if(NULL != (sibling = _synctex_new_hbox(scanner)) &&
+ NULL != (info = SYNCTEX_INFO(sibling))) {
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_WIDTH_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HEIGHT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_DEPTH_IDX)
+ || _synctex_setup_visible_box(sibling)<SYNCTEX_STATUS_OK
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad hbox record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_SET_SIBLING(child,sibling);
+ child = sibling;
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child),SYNCTEX_VERT(child));
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child)+SYNCTEX_ABS_WIDTH(child),SYNCTEX_VERT(child));
+ parent = child;
+ child = NULL;
+ goto child_loop;
+ } else {
+ _synctex_error("Can't create hbox record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == ')') {
+ goto scan_xobh;
+ } else if(*SYNCTEX_CUR == 'v') {
+ ++SYNCTEX_CUR;
+ if(NULL != (sibling = _synctex_new_void_vbox(scanner)) &&
+ NULL != (info = SYNCTEX_INFO(sibling))) {
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_WIDTH_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HEIGHT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_DEPTH_IDX)
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad void vbox record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_SET_SIBLING(child,sibling);
+ child = sibling;
+ SYNCTEX_UPDATE_FRIEND(child);
+ goto sibling_loop;
+ } else {
+ _synctex_error("can't create void vbox record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == 'h') {
+ ++SYNCTEX_CUR;
+ if(NULL != (sibling = _synctex_new_void_hbox(scanner)) &&
+ NULL != (info = SYNCTEX_INFO(sibling))) {
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_WIDTH_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HEIGHT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_DEPTH_IDX)
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad void hbox record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_SET_SIBLING(child,sibling);
+ child = sibling;
+ SYNCTEX_UPDATE_FRIEND(child);
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child),SYNCTEX_VERT(child));
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child)+SYNCTEX_ABS_WIDTH(child),SYNCTEX_VERT(child));
+ goto sibling_loop;
+ } else {
+ _synctex_error("can't create void hbox record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == 'k') {
+ ++SYNCTEX_CUR;
+ if(NULL != (sibling = _synctex_new_kern(scanner))
+ && NULL != (info = SYNCTEX_INFO(sibling))) {
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_WIDTH_IDX)
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad kern record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_SET_SIBLING(child,sibling);
+ child = sibling;
+ SYNCTEX_UPDATE_FRIEND(child);
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child),SYNCTEX_VERT(child));
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child)-SYNCTEX_WIDTH(child),SYNCTEX_VERT(child));
+ goto sibling_loop;
+ } else {
+ _synctex_error("Can't create kern record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == 'g') {
+ ++SYNCTEX_CUR;
+ if(NULL != (sibling = _synctex_new_glue(scanner))
+ && NULL != (info = SYNCTEX_INFO(sibling))) {
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad glue record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_SET_SIBLING(child,sibling);
+ child = sibling;
+ SYNCTEX_UPDATE_FRIEND(child);
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child),SYNCTEX_VERT(child));
+ goto sibling_loop;
+ } else {
+ _synctex_error("Can't create glue record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == '$') {
+ ++SYNCTEX_CUR;
+ if(NULL != (sibling = _synctex_new_math(scanner))
+ && NULL != (info = SYNCTEX_INFO(sibling))) {
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad math record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_SET_SIBLING(child,sibling);
+ child = sibling;
+ SYNCTEX_UPDATE_FRIEND(child);
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child),SYNCTEX_VERT(child));
+ goto sibling_loop;
+ } else {
+ _synctex_error("Can't create math record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == 'x') {
+ ++SYNCTEX_CUR;
+ if(NULL != (sibling = _synctex_new_boundary(scanner))
+ && NULL != (info = SYNCTEX_INFO(sibling))) {
+ if(SYNCTEX_DECODE_FAILED(SYNCTEX_TAG_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_LINE_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_HORIZ_IDX)
+ || SYNCTEX_DECODE_FAILED(SYNCTEX_VERT_IDX)
+ || _synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad boundary record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ SYNCTEX_SET_SIBLING(child,sibling);
+ child = sibling;
+ SYNCTEX_UPDATE_FRIEND(child);
+ _synctex_horiz_box_setup_visible(parent,SYNCTEX_HORIZ(child),SYNCTEX_VERT(child));
+ goto sibling_loop;
+ } else {
+ _synctex_error("Can't create boundary record (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ } else if(*SYNCTEX_CUR == '}') {
+ goto scan_teehs;
+ } else if(*SYNCTEX_CUR == '!') {
+ ++SYNCTEX_CUR;
+ if(_synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Missing anchor (2).");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ goto sibling_loop;
+ } else {
+ ++SYNCTEX_CUR;
+ /* _synctex_error("Ignored record %c(2)\n",*SYNCTEX_CUR); */
+ if(_synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ goto sibling_loop;
+ }
+ } else {
+ available = 1;
+ status = _synctex_buffer_get_available_size(scanner,&available);
+ if(status<SYNCTEX_STATUS_OK && available>0){
+ goto sibling_loop;
+ } else {
+ _synctex_error("Uncomplete sheet(2)");
+ SYNCTEX_RETURN(SYNCTEX_STATUS_ERROR);
+ }
+ }
+# undef SYNCTEX_DECODE_FAILED
+}
+
+/* Used when parsing the synctex file
+ */
+synctex_status_t _synctex_scan_content(synctex_scanner_t scanner) {
+ synctex_node_t sheet = NULL;
+ synctex_status_t status = 0;
+ if(NULL == scanner) {
+ return SYNCTEX_STATUS_BAD_ARGUMENT;
+ }
+ /* set up the lists of friends */
+ if(NULL == scanner->lists_of_friends) {
+ scanner->number_of_lists = 1024;
+ scanner->lists_of_friends = (synctex_node_t *)_synctex_malloc(scanner->number_of_lists*sizeof(synctex_node_t));
+ if(NULL == scanner->lists_of_friends) {
+ _synctex_error("malloc:2");
+ return SYNCTEX_STATUS_ERROR;
+ }
+ }
+ /* Find where this section starts */
+content_not_found:
+ status = _synctex_match_string(scanner,"Content:");
+ if(status<SYNCTEX_STATUS_EOF) {
+ return status;
+ }
+ if(_synctex_next_line(scanner)<SYNCTEX_STATUS_OK) {
+ _synctex_error("Uncomplete Content.");
+ return SYNCTEX_STATUS_ERROR;
+ }
+ if(status == SYNCTEX_STATUS_NOT_OK) {
+ goto content_not_found;
+ }
+next_sheet:
+ if(*SYNCTEX_CUR != '{') {
+ status = _synctex_scan_postamble(scanner);
+ if(status < SYNCTEX_STATUS_EOF) {
+ _synctex_error("Bad content.");
+ return status;
+ }
+ if(status<SYNCTEX_STATUS_OK) {
+ status = _synctex_next_line(scanner);
+ if(status < SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad content.");
+ return status;
+ }
+ goto next_sheet;
+ }
+ return SYNCTEX_STATUS_OK;
+ }
+ ++SYNCTEX_CUR;
+ /* Create a new sheet node */
+ sheet = _synctex_new_sheet(scanner);
+ status = _synctex_decode_int(scanner,&(SYNCTEX_PAGE(sheet)));
+ if(status<SYNCTEX_STATUS_OK) {
+ _synctex_error("Missing sheet number.");
+bail:
+ SYNCTEX_FREE(sheet);
+ return SYNCTEX_STATUS_ERROR;
+ }
+ status = _synctex_next_line(scanner);
+ if(status<SYNCTEX_STATUS_OK) {
+ _synctex_error("Uncomplete file.");
+ goto bail;
+ }
+ status = _synctex_scan_sheet(scanner,sheet);
+ if(status<SYNCTEX_STATUS_OK) {
+ _synctex_error("Bad sheet content.");
+ goto bail;
+ }
+ SYNCTEX_SET_SIBLING(sheet,scanner->sheet);
+ scanner->sheet = sheet;
+ sheet = NULL;
+ /* Now read the list of Inputs between 2 sheets. */
+ do {
+ status = _synctex_scan_input(scanner);
+ if(status<SYNCTEX_STATUS_EOF) {
+ _synctex_error("Bad input section.");
+ goto bail;
+ }
+ }
+ while(status >= SYNCTEX_STATUS_OK);
+ goto next_sheet;
+}
+
+int _synctex_open(const char * output, const char * build_directory, char ** synctex_name_ref, gzFile * file_ref, synctex_bool_t add_quotes, synctex_io_mode_t * io_modeRef);
+
+/* Where the synctex scanner is created. */
+synctex_scanner_t synctex_scanner_new_with_output_file(const char * output, const char * build_directory, int parse) {
+ gzFile file = NULL;
+ char * synctex = NULL;
+ synctex_scanner_t scanner = NULL;
+ synctex_io_mode_t io_mode = synctex_io_mode_read;
+ /* Here we assume that int are smaller than void * */
+ if(sizeof(int)>sizeof(void*)) {
+ _synctex_error("INTERNAL INCONSISTENCY: int's are unexpectedly bigger than pointers, bailing out.");
+ return NULL;
+ }
+ /* We ensure that SYNCTEX_BUFFER_SIZE < UINT_MAX, I don't know if it makes sense... */
+ if(SYNCTEX_BUFFER_SIZE >= UINT_MAX) {
+ _synctex_error("SyncTeX BUG: Internal inconsistency, bad SYNCTEX_BUFFER_SIZE (1)");
+ return NULL;
+ }
+ /* for integers: */
+ if(SYNCTEX_BUFFER_SIZE < SYNCTEX_BUFFER_MIN_SIZE) {
+ _synctex_error("SyncTeX BUG: Internal inconsistency, bad SYNCTEX_BUFFER_SIZE (2)");
+ return NULL;
+ }
+ /* now open the synctex file */
+ if(_synctex_open(output,build_directory,&synctex,&file,synctex_NO,&io_mode) || !file) {
+ if(_synctex_open(output,build_directory,&synctex,&file,synctex_YES,&io_mode) || !file) {
+ return NULL;
+ }
+ }
+ scanner = (synctex_scanner_t)_synctex_malloc(sizeof(_synctex_scanner_t));
+ if(NULL == scanner) {
+ _synctex_error("SyncTeX: malloc problem");
+ free(synctex);
+ gzclose(file);
+ return NULL;
+ }
+ /* make a private copy of output for the scanner */
+ if(NULL == (scanner->output = (char *)malloc(strlen(output)+1))){
+ _synctex_error("! synctex_scanner_new_with_output_file: Memory problem (2), scanner's output is not reliable.");
+ } else if(scanner->output != strcpy(scanner->output,output)) {
+ _synctex_error("! synctex_scanner_new_with_output_file: Copy problem, scanner's output is not reliable.");
+ }
+ scanner->synctex = synctex;/* Now the scanner owns synctex */
+ SYNCTEX_FILE = file;
+ return parse? synctex_scanner_parse(scanner):scanner;
+}
+
+int __synctex_open(const char * output, char ** synctex_name_ref, gzFile * file_ref, synctex_bool_t add_quotes, synctex_io_mode_t * io_modeRef);
+
+/* This functions opens the file at the "output" given location.
+ * It manages the problem of quoted filenames that appear with pdftex an filenames containing the space character.
+ * In TeXLive 2008, the synctex file created with pdftex did contain unexpected quotes.
+ * This function will remove them if possible.
+ * 0 on success, non 0 on error. */
+int __synctex_open(const char * output, char ** synctex_name_ref, gzFile * file_ref, synctex_bool_t add_quotes, synctex_io_mode_t * io_modeRef) {
+# define synctex_name (*synctex_name_ref)
+# define the_file (*file_ref)
+# define io_mode (*io_modeRef)
+ if(synctex_name_ref && file_ref) {
+ char * quoteless = NULL;
+ const char * mode = synctex_io_modes[io_mode];
+ size_t size = 0;
+ /* now create the synctex file name */
+ size = strlen(output)+strlen(synctex_suffix)+strlen(synctex_suffix_gz)+1;
+ synctex_name = (char *)malloc(size);
+ if(NULL == synctex_name) {
+ _synctex_error("! __synctex_open: Memory problem (1)\n");
+ return 1;
+ }
+ /* we have reserved for synctex enough memory to copy output, both suffices and 2 quotes,
+ * including the terminating character. size is free now. */
+ if(synctex_name != strcpy(synctex_name,output)) {
+ _synctex_error("! __synctex_open: Copy problem\n");
+return_on_error:
+ free(synctex_name);
+ synctex_name = NULL;/* Don't forget to reinitialize. */
+ the_file = NULL; /* Here as well */
+ free(quoteless);
+ return 2;
+ }
+ /* remove the last path extension if any */
+ _synctex_strip_last_path_extension(synctex_name);
+ if(!strlen(synctex_name)) {
+ goto return_on_error;
+ }
+ /* now insert quotes. */
+ if(add_quotes) {
+ char * quoted = NULL;
+ if(_synctex_copy_with_quoting_last_path_component(synctex_name,"ed,size) || (NULL == quoted)) {
+ /* There was an error or quoting does not make sense: */
+ goto return_on_error;
+ }
+ quoteless = synctex_name;
+ synctex_name = quoted;
+ }
+ /* Now add the first path extension. */
+ if(synctex_name != strcat(synctex_name,synctex_suffix)){
+ _synctex_error("! __synctex_open: Concatenation problem (can't add suffix '%s')\n",synctex_suffix);
+ goto return_on_error;
+ }
+ /* To quoteless as well. */
+ if(quoteless && (quoteless != strcat(quoteless,synctex_suffix))){
+ free(quoteless);
+ quoteless = NULL;
+ }
+ if(NULL == (the_file = gzopen(synctex_name,mode))) {
+ /* Could not open this file */
+ if(errno != ENOENT) {
+ /* The file does exist, this is a lower lever error, I can't do anything. */
+ _synctex_error("SyncTeX: could not open %s, error %i\n",synctex_name,errno);
+ goto return_on_error;
+ }
+ /* Try the compressed version */
+ if(synctex_name != strcat(synctex_name,synctex_suffix_gz)){
+ _synctex_error("! __synctex_open: Concatenation problem (can't add suffix '%s')\n",synctex_suffix_gz);
+ goto return_on_error;
+ }
+ ++io_mode;
+ mode = synctex_io_modes[io_mode]; /* the file is a compressed and is a binary file, this caused errors on Windows */
+ /* To quoteless as well. */
+ if(quoteless && (quoteless != strcat(quoteless,synctex_suffix_gz))){
+ free(quoteless);
+ quoteless = NULL;
+ }
+ if(NULL == (the_file = gzopen(synctex_name,mode))) {
+ /* Could not open this file */
+ if(errno != ENOENT) {
+ /* The file does exist, this is a lower lever error, I can't do anything. */
+ _synctex_error("SyncTeX: could not open %s, error %i\n",synctex_name,errno);
+ }
+ goto return_on_error;
+ }
+ }
+ /* At this point, the file is properly open.
+ * If we are in the add_quotes mode, we change the file name by removing the quotes. */
+ if(quoteless) {
+ gzclose(the_file);
+ if(rename(synctex_name,quoteless)) {
+ _synctex_error("SyncTeX: could not rename %s to %s, error %i\n",synctex_name,quoteless,errno);
+ /* Reopen the file. */
+ if(NULL == (the_file = gzopen(synctex_name,mode))) {
+ /* Could not open this file */
+ if(errno != ENOENT) {
+ /* The file does exist, this is a lower lever error, I can't do anything. */
+ _synctex_error("SyncTeX: could not open again %s, error %i\n",synctex_name,errno);
+ }
+ goto return_on_error;
+ }
+ } else {
+ if(NULL == (the_file = gzopen(quoteless,mode))) {
+ /* Could not open this file */
+ if(errno != ENOENT) {
+ /* The file does exist, this is a lower lever error, I can't do anything. */
+ _synctex_error("SyncTeX: could not open renamed %s, error %i\n",quoteless,errno);
+ }
+ goto return_on_error;
+ }
+ /* The quote free file name should replace the old one:*/
+ free(synctex_name);
+ synctex_name = quoteless;
+ quoteless = NULL;
+ }
+ }
+ return 0;
+ }
+ return 3; /* Bad parameter. */
+# undef synctex_name
+# undef the_file
+# undef io_mode
+}
+
+/* Opens the ouput file, taking into account the eventual build_directory.
+ * 0 on success, non 0 on error. */
+int _synctex_open(const char * output, const char * build_directory, char ** synctex_name_ref, gzFile * file_ref, synctex_bool_t add_quotes, synctex_io_mode_t * io_modeRef) {
+# define synctex_name (*synctex_name_ref)
+# define the_file (*file_ref)
+ int result = __synctex_open(output,synctex_name_ref,file_ref,add_quotes,io_modeRef);
+ if((result || !*file_ref) && build_directory && strlen(build_directory)) {
+ char * build_output;
+ const char * lpc;
+ size_t size;
+ synctex_bool_t is_absolute;
+ build_output = NULL;
+ lpc = _synctex_last_path_component(output);
+ size = strlen(build_directory)+strlen(lpc)+2;
+ is_absolute = _synctex_path_is_absolute(build_directory);
+ if(!is_absolute) {
+ size += strlen(output);
+ }
+ if((build_output = (char *)malloc(size))) {
+ if(is_absolute) {
+ build_output[0] = '\0';
+ } else {
+ if(build_output != strcpy(build_output,output)) {
+ return -4;
+ }
+ build_output[lpc-output]='\0';
+ }
+ if(build_output == strcat(build_output,build_directory)) {
+ /* Append a path separator if necessary. */
+ if(!SYNCTEX_IS_PATH_SEPARATOR(build_output[strlen(build_directory)-1])) {
+ if(build_output != strcat(build_output,"/")) {
+ return -2;
+ }
+ }
+ /* Append the last path component of the output. */
+ if(build_output != strcat(build_output,lpc)) {
+ return -3;
+ }
+ return __synctex_open(build_output,synctex_name_ref,file_ref,add_quotes,io_modeRef);
+ }
+ }
+ return -1;
+ }
+ return result;
+# undef synctex_name
+# undef the_file
+}
+
+/* The scanner destructor
+ */
+void synctex_scanner_free(synctex_scanner_t scanner) {
+ if(NULL == scanner) {
+ return;
+ }
+ if(SYNCTEX_FILE) {
+ gzclose(SYNCTEX_FILE);
+ SYNCTEX_FILE = NULL;
+ }
+ SYNCTEX_FREE(scanner->sheet);
+ SYNCTEX_FREE(scanner->input);
+ free(SYNCTEX_START);
+ free(scanner->output_fmt);
+ free(scanner->output);
+ free(scanner->synctex);
+ free(scanner->lists_of_friends);
+ free(scanner);
+}
+
+/* Where the synctex scanner parses the contents of the file. */
+synctex_scanner_t synctex_scanner_parse(synctex_scanner_t scanner) {
+ synctex_status_t status = 0;
+ if(!scanner || scanner->flags.has_parsed) {
+ return scanner;
+ }
+ scanner->flags.has_parsed=1;
+ scanner->pre_magnification = 1000;
+ scanner->pre_unit = 8192;
+ scanner->pre_x_offset = scanner->pre_y_offset = 578;
+ /* initialize the offset with a fake unprobable value,
+ * If there is a post scriptum section, this value will be overriden by the real life value */
+ scanner->x_offset = scanner->y_offset = 6.027e23f;
+ scanner->class[synctex_node_type_sheet] = synctex_class_sheet;
+ scanner->class[synctex_node_type_input] = synctex_class_input;
+ (scanner->class[synctex_node_type_input]).scanner = scanner;
+ (scanner->class[synctex_node_type_sheet]).scanner = scanner;
+ scanner->class[synctex_node_type_vbox] = synctex_class_vbox;
+ (scanner->class[synctex_node_type_vbox]).scanner = scanner;
+ scanner->class[synctex_node_type_void_vbox] = synctex_class_void_vbox;
+ (scanner->class[synctex_node_type_void_vbox]).scanner = scanner;
+ scanner->class[synctex_node_type_hbox] = synctex_class_hbox;
+ (scanner->class[synctex_node_type_hbox]).scanner = scanner;
+ scanner->class[synctex_node_type_void_hbox] = synctex_class_void_hbox;
+ (scanner->class[synctex_node_type_void_hbox]).scanner = scanner;
+ scanner->class[synctex_node_type_kern] = synctex_class_kern;
+ (scanner->class[synctex_node_type_kern]).scanner = scanner;
+ scanner->class[synctex_node_type_glue] = synctex_class_glue;
+ (scanner->class[synctex_node_type_glue]).scanner = scanner;
+ scanner->class[synctex_node_type_math] = synctex_class_math;
+ (scanner->class[synctex_node_type_math]).scanner = scanner;
+ scanner->class[synctex_node_type_boundary] = synctex_class_boundary;
+ (scanner->class[synctex_node_type_boundary]).scanner = scanner;
+ SYNCTEX_START = (char *)malloc(SYNCTEX_BUFFER_SIZE+1); /* one more character for null termination */
+ if(NULL == SYNCTEX_START) {
+ _synctex_error("SyncTeX: malloc error");
+ synctex_scanner_free(scanner);
+ return NULL;
+ }
+ SYNCTEX_END = SYNCTEX_START+SYNCTEX_BUFFER_SIZE;
+ /* SYNCTEX_END always points to a null terminating character.
+ * Maybe there is another null terminating character between SYNCTEX_CUR and SYNCTEX_END-1.
+ * At least, we are sure that SYNCTEX_CUR points to a string covering a valid part of the memory. */
+ *SYNCTEX_END = '\0';
+ SYNCTEX_CUR = SYNCTEX_END;
+ status = _synctex_scan_preamble(scanner);
+ if(status<SYNCTEX_STATUS_OK) {
+ _synctex_error("SyncTeX Error: Bad preamble\n");
+bailey:
+ synctex_scanner_free(scanner);
+ return NULL;
+ }
+ status = _synctex_scan_content(scanner);
+ if(status<SYNCTEX_STATUS_OK) {
+ _synctex_error("SyncTeX Error: Bad content\n");
+ goto bailey;
+ }
+ /* Everything is finished, free the buffer, close the file */
+ free((void *)SYNCTEX_START);
+ SYNCTEX_START = SYNCTEX_CUR = SYNCTEX_END = NULL;
+ gzclose(SYNCTEX_FILE);
+ SYNCTEX_FILE = NULL;
+ /* Final tuning: set the default values for various parameters */
+ /* 1 pre_unit = (scanner->pre_unit)/65536 pt = (scanner->pre_unit)/65781.76 bp
+ * 1 pt = 65536 sp */
+ if(scanner->pre_unit<=0) {
+ scanner->pre_unit = 8192;
+ }
+ if(scanner->pre_magnification<=0) {
+ scanner->pre_magnification = 1000;
+ }
+ if(scanner->unit <= 0) {
+ /* no post magnification */
+ scanner->unit = scanner->pre_unit / 65781.76;/* 65781.76 or 65536.0*/
+ } else {
+ /* post magnification */
+ scanner->unit *= scanner->pre_unit / 65781.76;
+ }
+ scanner->unit *= scanner->pre_magnification / 1000.0;
+ if(scanner->x_offset > 6e23) {
+ /* no post offset */
+ scanner->x_offset = scanner->pre_x_offset * (scanner->pre_unit / 65781.76);
+ scanner->y_offset = scanner->pre_y_offset * (scanner->pre_unit / 65781.76);
+ } else {
+ /* post offset */
+ scanner->x_offset /= 65781.76f;
+ scanner->y_offset /= 65781.76f;
+ }
+ return scanner;
+ #undef SYNCTEX_FILE
+}
+
+/* Scanner accessors.
+ */
+int synctex_scanner_pre_x_offset(synctex_scanner_t scanner){
+ return scanner?scanner->pre_x_offset:0;
+}
+int synctex_scanner_pre_y_offset(synctex_scanner_t scanner){
+ return scanner?scanner->pre_y_offset:0;
+}
+int synctex_scanner_x_offset(synctex_scanner_t scanner){
+ return scanner?scanner->x_offset:0;
+}
+int synctex_scanner_y_offset(synctex_scanner_t scanner){
+ return scanner?scanner->y_offset:0;
+}
+float synctex_scanner_magnification(synctex_scanner_t scanner){
+ return scanner?scanner->unit:1;
+}
+void synctex_scanner_display(synctex_scanner_t scanner) {
+ if(NULL == scanner) {
+ return;
+ }
+ printf("The scanner:\noutput:%s\noutput_fmt:%s\nversion:%i\n",scanner->output,scanner->output_fmt,scanner->version);
+ printf("pre_unit:%i\nx_offset:%i\ny_offset:%i\n",scanner->pre_unit,scanner->pre_x_offset,scanner->pre_y_offset);
+ printf("count:%i\npost_magnification:%f\npost_x_offset:%f\npost_y_offset:%f\n",
+ scanner->count,scanner->unit,scanner->x_offset,scanner->y_offset);
+ printf("The input:\n");
+ SYNCTEX_DISPLAY(scanner->input);
+ if(scanner->count<1000) {
+ printf("The sheets:\n");
+ SYNCTEX_DISPLAY(scanner->sheet);
+ printf("The friends:\n");
+ if(scanner->lists_of_friends) {
+ int i = scanner->number_of_lists;
+ synctex_node_t node;
+ while(i--) {
+ printf("Friend index:%i\n",i);
+ node = (scanner->lists_of_friends)[i];
+ while(node) {
+ printf("%s:%i,%i\n",
+ synctex_node_isa(node),
+ SYNCTEX_TAG(node),
+ SYNCTEX_LINE(node)
+ );
+ node = SYNCTEX_FRIEND(node);
+ }
+ }
+ }
+ } else {
+ printf("SyncTeX Warning: Too many objects\n");
+ }
+}
+/* Public*/
+const char * synctex_scanner_get_name(synctex_scanner_t scanner,int tag) {
+ synctex_node_t input = NULL;
+ if(NULL == scanner) {
+ return NULL;
+ }
+ input = scanner->input;
+ do {
+ if(tag == SYNCTEX_TAG(input)) {
+ return (SYNCTEX_NAME(input));
+ }
+ } while((input = SYNCTEX_SIBLING(input)) != NULL);
+ return NULL;
+}
+
+int _synctex_scanner_get_tag(synctex_scanner_t scanner,const char * name);
+int _synctex_scanner_get_tag(synctex_scanner_t scanner,const char * name) {
+ synctex_node_t input = NULL;
+ if(NULL == scanner) {
+ return 0;
+ }
+ input = scanner->input;
+ do {
+ if(_synctex_is_equivalent_file_name(name,(SYNCTEX_NAME(input)))) {
+ return SYNCTEX_TAG(input);
+ }
+ } while((input = SYNCTEX_SIBLING(input)) != NULL);
+ return 0;
+}
+
+int synctex_scanner_get_tag(synctex_scanner_t scanner,const char * name) {
+ size_t char_index = strlen(name);
+ if((scanner = synctex_scanner_parse(scanner)) && (0 < char_index)) {
+ /* the name is not void */
+ char_index -= 1;
+ if(!SYNCTEX_IS_PATH_SEPARATOR(name[char_index])) {
+ /* the last character of name is not a path separator */
+ int result = _synctex_scanner_get_tag(scanner,name);
+ if(result) {
+ return result;
+ } else {
+ /* the given name was not the one known by TeX
+ * try a name relative to the enclosing directory of the scanner->output file */
+ const char * relative = name;
+ const char * ptr = scanner->output;
+ while((strlen(relative) > 0) && (strlen(ptr) > 0) && (*relative == *ptr))
+ {
+ relative += 1;
+ ptr += 1;
+ }
+ /* Find the last path separator before relative */
+ while(relative > name) {
+ if(SYNCTEX_IS_PATH_SEPARATOR(*(relative-1))) {
+ break;
+ }
+ relative -= 1;
+ }
+ if((relative > name) && (result = _synctex_scanner_get_tag(scanner,relative))) {
+ return result;
+ }
+ if(SYNCTEX_IS_PATH_SEPARATOR(name[0])) {
+ /* No tag found for the given absolute name,
+ * Try each relative path starting from the shortest one */
+ while(0<char_index) {
+ char_index -= 1;
+ if(SYNCTEX_IS_PATH_SEPARATOR(name[char_index])
+ && (result = _synctex_scanner_get_tag(scanner,name+char_index+1))) {
+ return result;
+ }
+ }
+ }
+ }
+ return result;
+ }
+ }
+ return 0;
+}
+synctex_node_t synctex_scanner_input(synctex_scanner_t scanner) {
+ return scanner?scanner->input:NULL;
+}
+const char * synctex_scanner_get_output_fmt(synctex_scanner_t scanner) {
+ return NULL != scanner && scanner->output_fmt?scanner->output_fmt:"";
+}
+const char * synctex_scanner_get_output(synctex_scanner_t scanner) {
+ return NULL != scanner && scanner->output?scanner->output:"";
+}
+const char * synctex_scanner_get_synctex(synctex_scanner_t scanner) {
+ return NULL != scanner && scanner->synctex?scanner->synctex:"";
+}
+# ifdef SYNCTEX_NOTHING
+# pragma mark -
+# pragma mark Public node attributes
+# endif
+int synctex_node_h(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ return SYNCTEX_HORIZ(node);
+}
+int synctex_node_v(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ return SYNCTEX_VERT(node);
+}
+int synctex_node_width(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ return SYNCTEX_WIDTH(node);
+}
+int synctex_node_box_h(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ if(SYNCTEX_IS_BOX(node)) {
+result:
+ return SYNCTEX_HORIZ(node);
+ }
+ if((node = SYNCTEX_PARENT(node)) && (node->class->type != synctex_node_type_sheet)) {
+ goto result;
+ }
+ return 0;
+}
+int synctex_node_box_v(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ if(SYNCTEX_IS_BOX(node)) {
+result:
+ return SYNCTEX_VERT(node);
+ }
+ if((node = SYNCTEX_PARENT(node)) && (node->class->type != synctex_node_type_sheet)) {
+ goto result;
+ }
+ return 0;
+}
+int synctex_node_box_width(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ if(SYNCTEX_IS_BOX(node)) {
+result:
+ return SYNCTEX_WIDTH(node);
+ }
+ if((node = SYNCTEX_PARENT(node)) && (node->class->type != synctex_node_type_sheet)) {
+ goto result;
+ }
+ return 0;
+}
+int synctex_node_box_height(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ if(SYNCTEX_IS_BOX(node)) {
+result:
+ return SYNCTEX_HEIGHT(node);
+ }
+ if((node = SYNCTEX_PARENT(node)) && (node->class->type != synctex_node_type_sheet)) {
+ goto result;
+ }
+ return 0;
+}
+int synctex_node_box_depth(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ if(SYNCTEX_IS_BOX(node)) {
+result:
+ return SYNCTEX_DEPTH(node);
+ }
+ if((node = SYNCTEX_PARENT(node)) && (node->class->type != synctex_node_type_sheet)) {
+ goto result;
+ }
+ return 0;
+}
+# ifdef SYNCTEX_NOTHING
+# pragma mark -
+# pragma mark Public node visible attributes
+# endif
+float synctex_node_visible_h(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ return SYNCTEX_HORIZ(node)*node->class->scanner->unit+node->class->scanner->x_offset;
+}
+float synctex_node_visible_v(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ return SYNCTEX_VERT(node)*node->class->scanner->unit+node->class->scanner->y_offset;
+}
+float synctex_node_visible_width(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ return SYNCTEX_WIDTH(node)*node->class->scanner->unit;
+}
+float synctex_node_box_visible_h(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ switch(node->class->type) {
+ case synctex_node_type_vbox:
+ case synctex_node_type_void_vbox:
+ case synctex_node_type_void_hbox:
+ return SYNCTEX_HORIZ(node)*node->class->scanner->unit+node->class->scanner->x_offset;
+ case synctex_node_type_hbox:
+result:
+ return SYNCTEX_HORIZ_V(node)*node->class->scanner->unit+node->class->scanner->x_offset;
+ }
+ if((node = SYNCTEX_PARENT(node)) && (node->class->type != synctex_node_type_sheet)) {
+ goto result;
+ }
+ return 0;
+}
+float synctex_node_box_visible_v(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ switch(node->class->type) {
+ case synctex_node_type_vbox:
+ case synctex_node_type_void_vbox:
+ case synctex_node_type_void_hbox:
+ return SYNCTEX_VERT(node)*node->class->scanner->unit+node->class->scanner->y_offset;
+ case synctex_node_type_hbox:
+result:
+ return SYNCTEX_VERT_V(node)*node->class->scanner->unit+node->class->scanner->y_offset;
+ }
+ if((node = SYNCTEX_PARENT(node)) && (node->class->type != synctex_node_type_sheet)) {
+ goto result;
+ }
+ return 0;
+}
+float synctex_node_box_visible_width(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ switch(node->class->type) {
+ case synctex_node_type_vbox:
+ case synctex_node_type_void_vbox:
+ case synctex_node_type_void_hbox:
+ return SYNCTEX_WIDTH(node)*node->class->scanner->unit;
+ case synctex_node_type_hbox:
+result:
+ return SYNCTEX_WIDTH_V(node)*node->class->scanner->unit;
+ }
+ if((node = SYNCTEX_PARENT(node)) && (node->class->type != synctex_node_type_sheet)) {
+ goto result;
+ }
+ return 0;
+}
+float synctex_node_box_visible_height(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ switch(node->class->type) {
+ case synctex_node_type_vbox:
+ case synctex_node_type_void_vbox:
+ case synctex_node_type_void_hbox:
+ return SYNCTEX_HEIGHT(node)*node->class->scanner->unit;
+ case synctex_node_type_hbox:
+result:
+ return SYNCTEX_HEIGHT_V(node)*node->class->scanner->unit;
+ }
+ if((node = SYNCTEX_PARENT(node)) && (node->class->type != synctex_node_type_sheet)) {
+ goto result;
+ }
+ return 0;
+}
+float synctex_node_box_visible_depth(synctex_node_t node){
+ if(!node) {
+ return 0;
+ }
+ switch(node->class->type) {
+ case synctex_node_type_vbox:
+ case synctex_node_type_void_vbox:
+ case synctex_node_type_void_hbox:
+ return SYNCTEX_DEPTH(node)*node->class->scanner->unit;
+ case synctex_node_type_hbox:
+result:
+ return SYNCTEX_DEPTH_V(node)*node->class->scanner->unit;
+ }
+ if((node = SYNCTEX_PARENT(node)) && (node->class->type != synctex_node_type_sheet)) {
+ goto result;
+ }
+ return 0;
+}
+# ifdef SYNCTEX_NOTHING
+# pragma mark -
+# pragma mark Other public node attributes
+# endif
+
+int synctex_node_page(synctex_node_t node){
+ synctex_node_t parent = NULL;
+ if(!node) {
+ return -1;
+ }
+ parent = SYNCTEX_PARENT(node);
+ while(parent) {
+ node = parent;
+ parent = SYNCTEX_PARENT(node);
+ }
+ if(node->class->type == synctex_node_type_sheet) {
+ return SYNCTEX_PAGE(node);
+ }
+ return -1;
+}
+int synctex_node_tag(synctex_node_t node) {
+ return node?SYNCTEX_TAG(node):-1;
+}
+int synctex_node_line(synctex_node_t node) {
+ return node?SYNCTEX_LINE(node):-1;
+}
+int synctex_node_column(synctex_node_t node) {
+# ifdef __DARWIN_UNIX03
+# pragma unused(node)
+# endif
+ return -1;
+}
+# ifdef SYNCTEX_NOTHING
+# pragma mark -
+# pragma mark Sheet
+# endif
+
+synctex_node_t synctex_sheet_content(synctex_scanner_t scanner,int page) {
+ if(scanner) {
+ synctex_node_t sheet = scanner->sheet;
+ while(sheet) {
+ if(page == SYNCTEX_PAGE(sheet)) {
+ return SYNCTEX_CHILD(sheet);
+ }
+ sheet = SYNCTEX_SIBLING(sheet);
+ }
+ }
+ return NULL;
+}
+
+# ifdef SYNCTEX_NOTHING
+# pragma mark -
+# pragma mark Query
+# endif
+
+int synctex_display_query(synctex_scanner_t scanner,const char * name,int line,int column) {
+# ifdef __DARWIN_UNIX03
+# pragma unused(column)
+# endif
+ int tag = synctex_scanner_get_tag(scanner,name);
+ size_t size = 0;
+ int friend_index = 0;
+ int max_line = 0;
+ synctex_node_t node = NULL;
+ if(tag == 0) {
+ printf("SyncTeX Warning: No tag for %s\n",name);
+ return -1;
+ }
+ free(SYNCTEX_START);
+ SYNCTEX_CUR = SYNCTEX_END = SYNCTEX_START = NULL;
+ max_line = line < INT_MAX-scanner->number_of_lists ? line+scanner->number_of_lists:INT_MAX;
+ while(line<max_line) {
+ /* This loop will only be performed once for advanced viewers */
+ friend_index = (tag+line)%(scanner->number_of_lists);
+ if((node = (scanner->lists_of_friends)[friend_index])) {
+ do {
+ if((synctex_node_type(node)>=synctex_node_type_boundary)
+ && (tag == SYNCTEX_TAG(node))
+ && (line == SYNCTEX_LINE(node))) {
+ if(SYNCTEX_CUR == SYNCTEX_END) {
+ size += 16;
+ SYNCTEX_END = realloc(SYNCTEX_START,size*sizeof(synctex_node_t *));
+ SYNCTEX_CUR += SYNCTEX_END - SYNCTEX_START;
+ SYNCTEX_START = SYNCTEX_END;
+ SYNCTEX_END = SYNCTEX_START + size*sizeof(synctex_node_t *);
+ }
+ *(synctex_node_t *)SYNCTEX_CUR = node;
+ SYNCTEX_CUR += sizeof(synctex_node_t);
+ }
+ } while((node = SYNCTEX_FRIEND(node)));
+ if(SYNCTEX_START == NULL) {
+ /* We did not find any matching boundary, retry with glue or kern */
+ node = (scanner->lists_of_friends)[friend_index];/* no need to test it again, already done */
+ do {
+ if((synctex_node_type(node)>=synctex_node_type_kern)
+ && (tag == SYNCTEX_TAG(node))
+ && (line == SYNCTEX_LINE(node))) {
+ if(SYNCTEX_CUR == SYNCTEX_END) {
+ size += 16;
+ SYNCTEX_END = realloc(SYNCTEX_START,size*sizeof(synctex_node_t *));
+ SYNCTEX_CUR += SYNCTEX_END - SYNCTEX_START;
+ SYNCTEX_START = SYNCTEX_END;
+ SYNCTEX_END = SYNCTEX_START + size*sizeof(synctex_node_t *);
+ }
+ *(synctex_node_t *)SYNCTEX_CUR = node;
+ SYNCTEX_CUR += sizeof(synctex_node_t);
+ }
+ } while((node = SYNCTEX_FRIEND(node)));
+ if(SYNCTEX_START == NULL) {
+ /* We did not find any matching glue or kern, retry with boxes */
+ node = (scanner->lists_of_friends)[friend_index];/* no need to test it again, already done */
+ do {
+ if((tag == SYNCTEX_TAG(node))
+ && (line == SYNCTEX_LINE(node))) {
+ if(SYNCTEX_CUR == SYNCTEX_END) {
+ size += 16;
+ SYNCTEX_END = realloc(SYNCTEX_START,size*sizeof(synctex_node_t *));
+ SYNCTEX_CUR += SYNCTEX_END - SYNCTEX_START;
+ SYNCTEX_START = SYNCTEX_END;
+ SYNCTEX_END = SYNCTEX_START + size*sizeof(synctex_node_t *);
+ }
+ *(synctex_node_t *)SYNCTEX_CUR = node;
+ SYNCTEX_CUR += sizeof(synctex_node_t);
+ }
+ } while((node = SYNCTEX_FRIEND(node)));
+ }
+ }
+ SYNCTEX_END = SYNCTEX_CUR;
+ /* Now reverse the order to have nodes in display order, and keep just a few nodes */
+ if((SYNCTEX_START) && (SYNCTEX_END))
+ {
+ synctex_node_t * start_ref = (synctex_node_t *)SYNCTEX_START;
+ synctex_node_t * end_ref = (synctex_node_t *)SYNCTEX_END;
+ end_ref -= 1;
+ while(start_ref < end_ref) {
+ node = *start_ref;
+ *start_ref = *end_ref;
+ *end_ref = node;
+ start_ref += 1;
+ end_ref -= 1;
+ }
+ /* Basically, we keep the first node for each parent.
+ * More precisely, we keep only nodes that are not descendants of
+ * their predecessor's parent. */
+ start_ref = (synctex_node_t *)SYNCTEX_START;
+ end_ref = (synctex_node_t *)SYNCTEX_START;
+ next_end:
+ end_ref += 1; /* we allways have start_ref<= end_ref*/
+ if(end_ref < (synctex_node_t *)SYNCTEX_END) {
+ node = *end_ref;
+ while((node = SYNCTEX_PARENT(node))) {
+ if(SYNCTEX_PARENT(*start_ref) == node) {
+ goto next_end;
+ }
+ }
+ start_ref += 1;
+ *start_ref = *end_ref;
+ goto next_end;
+ }
+ start_ref += 1;
+ SYNCTEX_END = (char *)start_ref;
+ }
+ SYNCTEX_CUR = NULL;
+ return (SYNCTEX_END-SYNCTEX_START)/sizeof(synctex_node_t);
+ }
+# if defined(__SYNCTEX_STRONG_DISPLAY_QUERY__)
+ break;
+# else
+ ++line;
+# endif
+ }
+ return 0;
+}
+
+synctex_node_t synctex_next_result(synctex_scanner_t scanner) {
+ if(NULL == SYNCTEX_CUR) {
+ SYNCTEX_CUR = SYNCTEX_START;
+ } else {
+ SYNCTEX_CUR+=sizeof(synctex_node_t);
+ }
+ if(SYNCTEX_CUR<SYNCTEX_END) {
+ return *(synctex_node_t*)SYNCTEX_CUR;
+ } else {
+ return NULL;
+ }
+}
+
+/* This struct records a point in TeX coordinates.*/
+typedef struct {
+ int h;
+ int v;
+} synctex_point_t;
+
+/* This struct records distances, the left one is positive or 0 and the right one is negative or 0.
+ * When comparing the locations of 2 different graphical objects on the page, we will have to also record the
+ * horizontal distance as signed to keep track of the typesetting order.*/
+typedef struct {
+ int left;
+ int right;
+} synctex_distances_t;
+
+typedef struct {
+ synctex_point_t left;
+ synctex_point_t right;
+} synctex_offsets_t;
+
+
+typedef struct {
+ synctex_node_t left;
+ synctex_node_t right;
+} synctex_node_set_t;
+
+/* The smallest container between two has the smallest width or height.
+ * This comparison is used when there are 2 overlapping boxes that contain the hit point.
+ * For ConTeXt, the problem appears at each page.
+ * The chosen box is the one with the smallest height, then the smallest width. */
+SYNCTEX_INLINE static synctex_node_t _synctex_smallest_container(synctex_node_t node, synctex_node_t other_node);
+
+/* Returns the distance between the hit point hitPoint=(H,V) and the given node. */
+synctex_bool_t _synctex_point_in_box(synctex_point_t hitPoint, synctex_node_t node, synctex_bool_t visible);
+int _synctex_node_distance_to_point(synctex_point_t hitPoint, synctex_node_t node, synctex_bool_t visible);
+
+/* The best container is the deeper box that contains the hit point (H,V).
+ * _synctex_eq_deepest_container starts with node whereas
+ * _synctex_box_child_deepest starts with node's children, if any
+ * if node is not a box, or a void box, NULL is returned.
+ * We traverse the node tree in a deep first manner and stop as soon as a result is found. */
+static synctex_node_t _synctex_eq_deepest_container(synctex_point_t hitPoint,synctex_node_t node, synctex_bool_t visible);
+
+/* Once a best container is found, the closest children are the closest nodes to the left or right of the hit point.
+ * Only horizontal and vertical offsets are used to compare the positions of the nodes. */
+SYNCTEX_INLINE static int _synctex_eq_get_closest_children_in_box(synctex_point_t hitPoint, synctex_node_t node, synctex_node_set_t* bestNodesRef,synctex_distances_t* bestDistancesRef, synctex_bool_t visible);
+
+/* The closest container is the box that is the one closest to the given point.
+ * The "visible" version takes into account the visible dimensions instead of the real ones given by TeX. */
+SYNCTEX_INLINE static synctex_node_t _synctex_eq_closest_child(synctex_point_t hitPoint,synctex_node_t node, synctex_bool_t visible);
+
+#define SYNCTEX_MASK_LEFT 1
+#define SYNCTEX_MASK_RIGHT 2
+
+int synctex_edit_query(synctex_scanner_t scanner,int page,float h,float v) {
+ synctex_node_t sheet = NULL;
+ synctex_node_t node = NULL; /* placeholder */
+ synctex_node_t other_node = NULL; /* placeholder */
+ synctex_point_t hitPoint = {0,0}; /* placeholder */
+ synctex_node_set_t bestNodes = {NULL,NULL}; /* holds the best node */
+ synctex_distances_t bestDistances = {INT_MAX,INT_MAX}; /* holds the best distances for the best node */
+ synctex_node_t bestContainer = NULL; /* placeholder */
+ if(NULL == (scanner = synctex_scanner_parse(scanner)) || 0 >= scanner->unit) {/* scanner->unit must be >0 */
+ return 0;
+ }
+ /* Convert the given point to scanner integer coordinates */
+ hitPoint.h = (h-scanner->x_offset)/scanner->unit;
+ hitPoint.v = (v-scanner->y_offset)/scanner->unit;
+ /* We will store in the scanner's buffer the result of the query. */
+ free(SYNCTEX_START);
+ SYNCTEX_START = SYNCTEX_END = SYNCTEX_CUR = NULL;
+ /* Find the proper sheet */
+ sheet = scanner->sheet;
+ while((sheet) && SYNCTEX_PAGE(sheet) != page) {
+ sheet = SYNCTEX_SIBLING(sheet);
+ }
+ if(NULL == sheet) {
+ return -1;
+ }
+ /* Now sheet points to the sheet node with proper page number */
+ /* Here is how we work:
+ * At first we do not consider the visible box dimensions. This will cover the most frequent cases.
+ * Then we try with the visible box dimensions.
+ * We try to find a non void box containing the hit point.
+ * We browse all the horizontal boxes until we find one containing the hit point. */
+ if((node = SYNCTEX_NEXT_HORIZ_BOX(sheet))) {
+ do {
+ if(_synctex_point_in_box(hitPoint,node,synctex_YES)) {
+ /* Maybe the hitPoint belongs to a contained vertical box. */
+end:
+ /* This trick is for catching overlapping boxes */
+ if((other_node = SYNCTEX_NEXT_HORIZ_BOX(node))) {
+ do {
+ if(_synctex_point_in_box(hitPoint,other_node,synctex_YES)) {
+ node = _synctex_smallest_container(other_node,node);
+ }
+ } while((other_node = SYNCTEX_NEXT_HORIZ_BOX(other_node)));
+ }
+ /* node is the smallest horizontal box that contains hitPoint. */
+ if((bestContainer = _synctex_eq_deepest_container(hitPoint,node,synctex_YES))) {
+ node = bestContainer;
+ }
+ _synctex_eq_get_closest_children_in_box(hitPoint,node,&bestNodes,&bestDistances,synctex_YES);
+ if(bestNodes.right && bestNodes.left) {
+ if((SYNCTEX_TAG(bestNodes.right)!=SYNCTEX_TAG(bestNodes.left))
+ || (SYNCTEX_LINE(bestNodes.right)!=SYNCTEX_LINE(bestNodes.left))
+ || (SYNCTEX_COLUMN(bestNodes.right)!=SYNCTEX_COLUMN(bestNodes.left))) {
+ if((SYNCTEX_START = malloc(2*sizeof(synctex_node_t)))) {
+ if(bestDistances.left>bestDistances.right) {
+ ((synctex_node_t *)SYNCTEX_START)[0] = bestNodes.right;
+ ((synctex_node_t *)SYNCTEX_START)[1] = bestNodes.left;
+ } else {
+ ((synctex_node_t *)SYNCTEX_START)[0] = bestNodes.left;
+ ((synctex_node_t *)SYNCTEX_START)[1] = bestNodes.right;
+ }
+ SYNCTEX_END = SYNCTEX_START + 2*sizeof(synctex_node_t);
+ SYNCTEX_CUR = NULL;
+ return (SYNCTEX_END-SYNCTEX_START)/sizeof(synctex_node_t);
+ }
+ return SYNCTEX_STATUS_ERROR;
+ }
+ /* both nodes have the same input coordinates
+ * We choose the one closest to the hit point */
+ if(bestDistances.left>bestDistances.right) {
+ bestNodes.left = bestNodes.right;
+ }
+ bestNodes.right = NULL;
+ } else if(bestNodes.right) {
+ bestNodes.left = bestNodes.right;
+ } else if(!bestNodes.left){
+ bestNodes.left = node;
+ }
+ if((SYNCTEX_START = malloc(sizeof(synctex_node_t)))) {
+ * (synctex_node_t *)SYNCTEX_START = bestNodes.left;
+ SYNCTEX_END = SYNCTEX_START + sizeof(synctex_node_t);
+ SYNCTEX_CUR = NULL;
+ return (SYNCTEX_END-SYNCTEX_START)/sizeof(synctex_node_t);
+ }
+ return SYNCTEX_STATUS_ERROR;
+ }
+ } while ((node = SYNCTEX_NEXT_HORIZ_BOX(node)));
+ /* All the horizontal boxes have been tested,
+ * None of them contains the hit point.
+ */
+ }
+ /* We are not lucky */
+ if((node = SYNCTEX_CHILD(sheet))) {
+ goto end;
+ }
+ return 0;
+}
+
+# ifdef SYNCTEX_NOTHING
+# pragma mark -
+# pragma mark Utilities
+# endif
+
+int _synctex_bail(void) {
+ _synctex_error("SyncTeX ERROR\n");
+ return -1;
+}
+/* Rougly speaking, this is:
+ * node's h coordinate - hitPoint's h coordinate.
+ * If node is to the right of the hit point, then this distance is positive,
+ * if node is to the left of the hit point, this distance is negative.*/
+int _synctex_point_h_distance(synctex_point_t hitPoint, synctex_node_t node, synctex_bool_t visible);
+int _synctex_point_h_distance(synctex_point_t hitPoint, synctex_node_t node, synctex_bool_t visible) {
+ if(node) {
+ int min,med,max;
+ switch(node->class->type) {
+ /* The distance between a point and a box is special.
+ * It is not the euclidian distance, nor something similar.
+ * We have to take into account the particular layout,
+ * and the box hierarchy.
+ * Given a box, there are 9 regions delimited by the lines of the edges of the box.
+ * The origin being at the top left corner of the page,
+ * we also give names to the vertices of the box.
+ *
+ * 1 | 2 | 3
+ * ---A---B--->
+ * 4 | 5 | 6
+ * ---C---D--->
+ * 7 | 8 | 9
+ * v v
+ */
+ case synctex_node_type_hbox:
+ /* getting the box bounds, taking into account negative width, height and depth. */
+ min = visible?SYNCTEX_HORIZ_V(node):SYNCTEX_HORIZ(node);
+ max = min + (visible?SYNCTEX_ABS_WIDTH_V(node):SYNCTEX_ABS_WIDTH(node));
+ /* We allways have min <= max */
+ if(hitPoint.h<min) {
+ return min - hitPoint.h; /* regions 1+4+7, result is > 0 */
+ } else if (hitPoint.h>max) {
+ return max - hitPoint.h; /* regions 3+6+9, result is < 0 */
+ } else {
+ return 0; /* regions 2+5+8, inside the box, except for vertical coordinates */
+ }
+ break;
+ case synctex_node_type_vbox:
+ case synctex_node_type_void_vbox:
+ case synctex_node_type_void_hbox:
+ /* getting the box bounds, taking into account negative width, height and depth.
+ * For these boxes, no visible dimension available */
+ min = SYNCTEX_HORIZ(node);
+ max = min + SYNCTEX_ABS_WIDTH(node);
+ /* We allways have min <= max */
+ if(hitPoint.h<min) {
+ return min - hitPoint.h; /* regions 1+4+7, result is > 0 */
+ } else if (hitPoint.h>max) {
+ return max - hitPoint.h; /* regions 3+6+9, result is < 0 */
+ } else {
+ return 0; /* regions 2+5+8, inside the box, except for vertical coordinates */
+ }
+ break;
+ case synctex_node_type_kern:
+ /* IMPORTANT NOTICE: the location of the kern is recorded AFTER the move.
+ * The distance to the kern is very special,
+ * in general, there is no text material in the kern,
+ * this is why we compute the offset relative to the closest edge of the kern.*/
+ max = SYNCTEX_WIDTH(node);
+ if(max<0) {
+ min = SYNCTEX_HORIZ(node);
+ max = min - max;
+ } else {
+ min = -max;
+ max = SYNCTEX_HORIZ(node);
+ min += max;
+ }
+ med = (min+max)/2;
+ /* positive kern: '.' means text, '>' means kern offset
+ * .............
+ * min>>>>med>>>>max
+ * ...............
+ * negative kern: '.' means text, '<' means kern offset
+ * ............................
+ * min<<<<med<<<<max
+ * .................................
+ * Actually, we do not take into account negative widths.
+ * There is a problem for such situation when there is efectively overlapping text.
+ * But this should be extremely rare. I guess that in that case, many different choices
+ * could be made, one being in contradiction of the other.
+ * It means that the best choice should be made according to the situation that occurs
+ * most frequently.
+ */
+ if(hitPoint.h<min) {
+ return min - hitPoint.h + 1; /* penalty to ensure other nodes are chosen first in case of overlapping ones */
+ } else if (hitPoint.h>max) {
+ return max - hitPoint.h - 1; /* same kind of penalty */
+ } else if (hitPoint.h>med) {
+ /* do things like if the node had 0 width and was placed at the max edge + 1*/
+ return max - hitPoint.h + 1; /* positive, the kern is to the right of the hitPoint */
+ } else {
+ return min - hitPoint.h - 1; /* negative, the kern is to the left of the hitPoint */
+ }
+ case synctex_node_type_glue:
+ case synctex_node_type_math:
+ return SYNCTEX_HORIZ(node) - hitPoint.h;
+ }
+ }
+ return INT_MAX;/* We always assume that the node is faraway to the right*/
+}
+/* Rougly speaking, this is:
+ * node's v coordinate - hitPoint's v coordinate.
+ * If node is at the top of the hit point, then this distance is positive,
+ * if node is at the bottom of the hit point, this distance is negative.*/
+int _synctex_point_v_distance(synctex_point_t hitPoint, synctex_node_t node,synctex_bool_t visible);
+int _synctex_point_v_distance(synctex_point_t hitPoint, synctex_node_t node,synctex_bool_t visible) {
+# ifdef __DARWIN_UNIX03
+# pragma unused(visible)
+# endif
+ if(node) {
+ int min,max;
+ switch(node->class->type) {
+ /* The distance between a point and a box is special.
+ * It is not the euclidian distance, nor something similar.
+ * We have to take into account the particular layout,
+ * and the box hierarchy.
+ * Given a box, there are 9 regions delimited by the lines of the edges of the box.
+ * The origin being at the top left corner of the page,
+ * we also give names to the vertices of the box.
+ *
+ * 1 | 2 | 3
+ * ---A---B--->
+ * 4 | 5 | 6
+ * ---C---D--->
+ * 7 | 8 | 9
+ * v v
+ */
+ case synctex_node_type_hbox:
+ /* getting the box bounds, taking into account negative width, height and depth. */
+ min = SYNCTEX_VERT_V(node);
+ max = min + SYNCTEX_ABS_DEPTH_V(node);
+ min -= SYNCTEX_ABS_HEIGHT_V(node);
+ /* We allways have min <= max */
+ if(hitPoint.v<min) {
+ return min - hitPoint.v; /* regions 1+2+3, result is > 0 */
+ } else if (hitPoint.v>max) {
+ return max - hitPoint.v; /* regions 7+8+9, result is < 0 */
+ } else {
+ return 0; /* regions 4.5.6, inside the box, except for horizontal coordinates */
+ }
+ break;
+ case synctex_node_type_vbox:
+ case synctex_node_type_void_vbox:
+ case synctex_node_type_void_hbox:
+ /* getting the box bounds, taking into account negative width, height and depth. */
+ min = SYNCTEX_VERT(node);
+ max = min + SYNCTEX_ABS_DEPTH(node);
+ min -= SYNCTEX_ABS_HEIGHT(node);
+ /* We allways have min <= max */
+ if(hitPoint.v<min) {
+ return min - hitPoint.v; /* regions 1+2+3, result is > 0 */
+ } else if (hitPoint.v>max) {
+ return max - hitPoint.v; /* regions 7+8+9, result is < 0 */
+ } else {
+ return 0; /* regions 4.5.6, inside the box, except for horizontal coordinates */
+ }
+ break;
+ case synctex_node_type_kern:
+ case synctex_node_type_glue:
+ case synctex_node_type_math:
+ return SYNCTEX_VERT(node) - hitPoint.v;
+ }
+ }
+ return INT_MAX;/* We always assume that the node is faraway to the top*/
+}
+
+SYNCTEX_INLINE static synctex_node_t _synctex_smallest_container(synctex_node_t node, synctex_node_t other_node) {
+ float height, other_height;
+ if(SYNCTEX_ABS_WIDTH(node)<SYNCTEX_ABS_WIDTH(other_node)) {
+ return node;
+ }
+ if(SYNCTEX_ABS_WIDTH(node)>SYNCTEX_ABS_WIDTH(other_node)) {
+ return other_node;
+ }
+ height = SYNCTEX_ABS_DEPTH(node) + SYNCTEX_ABS_HEIGHT(node);
+ other_height = SYNCTEX_ABS_DEPTH(other_node) + SYNCTEX_ABS_HEIGHT(other_node);
+ if(height<other_height) {
+ return node;
+ }
+ if(height>other_height) {
+ return other_node;
+ }
+ return node;
+}
+
+synctex_bool_t _synctex_point_in_box(synctex_point_t hitPoint, synctex_node_t node, synctex_bool_t visible) {
+ if(node) {
+ if(0 == _synctex_point_h_distance(hitPoint,node,visible)
+ && 0 == _synctex_point_v_distance(hitPoint,node,visible)) {
+ return synctex_YES;
+ }
+ }
+ return synctex_NO;
+}
+
+int _synctex_node_distance_to_point(synctex_point_t hitPoint, synctex_node_t node, synctex_bool_t visible) {
+# ifdef __DARWIN_UNIX03
+# pragma unused(visible)
+# endif
+ int result = INT_MAX; /* when the distance is meaning less (sheet, input...) */
+ if(node) {
+ int minH,maxH,minV,maxV;
+ switch(node->class->type) {
+ /* The distance between a point and a box is special.
+ * It is not the euclidian distance, nor something similar.
+ * We have to take into account the particular layout,
+ * and the box hierarchy.
+ * Given a box, there are 9 regions delimited by the lines of the edges of the box.
+ * The origin being at the top left corner of the page,
+ * we also give names to the vertices of the box.
+ *
+ * 1 | 2 | 3
+ * ---A---B--->
+ * 4 | 5 | 6
+ * ---C---D--->
+ * 7 | 8 | 9
+ * v v
+ * In each region, there is a different formula.
+ * In the end we have a continuous distance which may not be a mathematical distance but who cares. */
+ case synctex_node_type_vbox:
+ case synctex_node_type_void_vbox:
+ case synctex_node_type_hbox:
+ case synctex_node_type_void_hbox:
+ /* getting the box bounds, taking into account negative widths. */
+ minH = SYNCTEX_HORIZ(node);
+ maxH = minH + SYNCTEX_ABS_WIDTH(node);
+ minV = SYNCTEX_VERT(node);
+ maxV = minV + SYNCTEX_ABS_DEPTH(node);
+ minV -= SYNCTEX_ABS_HEIGHT(node);
+ /* In what region is the point hitPoint=(H,V) ? */
+ if(hitPoint.v<minV) {
+ if(hitPoint.h<minH) {
+ /* This is region 1. The distance to the box is the L1 distance PA. */
+ result = minV - hitPoint.v + minH - hitPoint.h;/* Integer overflow? probability epsilon */
+ } else if(hitPoint.h<=maxH) {
+ /* This is region 2. The distance to the box is the geometrical distance to the top edge. */
+ result = minV - hitPoint.v;
+ } else {
+ /* This is region 3. The distance to the box is the L1 distance PB. */
+ result = minV - hitPoint.v + hitPoint.h - maxH;
+ }
+ } else if(hitPoint.v<=maxV) {
+ if(hitPoint.h<minH) {
+ /* This is region 4. The distance to the box is the geometrical distance to the left edge. */
+ result = minH - hitPoint.h;
+ } else if(hitPoint.h<=maxH) {
+ /* This is region 4. We are inside the box. */
+ result = 0;
+ } else {
+ /* This is region 6. The distance to the box is the geometrical distance to the right edge. */
+ result = hitPoint.h - maxH;
+ }
+ } else {
+ if(hitPoint.h<minH) {
+ /* This is region 7. The distance to the box is the L1 distance PC. */
+ result = hitPoint.v - maxV + minH - hitPoint.h;
+ } else if(hitPoint.h<=maxH) {
+ /* This is region 8. The distance to the box is the geometrical distance to the top edge. */
+ result = hitPoint.v - maxV;
+ } else {
+ /* This is region 9. The distance to the box is the L1 distance PD. */
+ result = hitPoint.v - maxV + hitPoint.h - maxH;
+ }
+ }
+ break;
+ case synctex_node_type_kern:
+ maxH = SYNCTEX_WIDTH(node);
+ if(maxH<0) {
+ minH = SYNCTEX_HORIZ(node);
+ maxH = minH - maxH;
+ } else {
+ minH = -maxH;
+ maxH = SYNCTEX_HORIZ(node);
+ minH += maxH;
+ }
+ minV = SYNCTEX_VERT(node);
+ if(hitPoint.h<minH) {
+ if(hitPoint.v>minV) {
+ result = hitPoint.v - minV + minH - hitPoint.h;
+ } else {
+ result = minV - hitPoint.v + minH - hitPoint.h;
+ }
+ } else if (hitPoint.h>maxH) {
+ if(hitPoint.v>minV) {
+ result = hitPoint.v - minV + hitPoint.h - maxH;
+ } else {
+ result = minV - hitPoint.v + hitPoint.h - maxH;
+ }
+ } else if(hitPoint.v>minV) {
+ result = hitPoint.v - minV;
+ } else {
+ result = minV - hitPoint.v;
+ }
+ break;
+ case synctex_node_type_glue:
+ case synctex_node_type_math:
+ minH = SYNCTEX_HORIZ(node);
+ minV = SYNCTEX_VERT(node);
+ if(hitPoint.h<minH) {
+ if(hitPoint.v>minV) {
+ result = hitPoint.v - minV + minH - hitPoint.h;
+ } else {
+ result = minV - hitPoint.v + minH - hitPoint.h;
+ }
+ } else if(hitPoint.v>minV) {
+ result = hitPoint.v - minV + hitPoint.h - minH;
+ } else {
+ result = minV - hitPoint.v + hitPoint.h - minH;
+ }
+ break;
+ }
+ }
+ return result;
+}
+
+static synctex_node_t _synctex_eq_deepest_container(synctex_point_t hitPoint,synctex_node_t node, synctex_bool_t visible) {
+ if(node) {
+ synctex_node_t result = NULL;
+ synctex_node_t child = NULL;
+ switch(node->class->type) {
+ case synctex_node_type_vbox:
+ case synctex_node_type_hbox:
+ /* test the deep nodes first */
+ if((child = SYNCTEX_CHILD(node))) {
+ do {
+ if((result = _synctex_eq_deepest_container(hitPoint,child,visible))) {
+ return result;
+ }
+ } while((child = SYNCTEX_SIBLING(child)));
+ }
+ /* is the hit point inside the box? */
+ if(_synctex_point_in_box(hitPoint,node,visible)) {
+ /* for vboxes we try to use some node inside.
+ * Walk through the list of siblings until we find the closest one.
+ * Only consider siblings with children. */
+ if((node->class->type == synctex_node_type_vbox) && (child = SYNCTEX_CHILD(node))) {
+ int bestDistance = INT_MAX;
+ do {
+ if(SYNCTEX_CHILD(child)) {
+ int distance = _synctex_node_distance_to_point(hitPoint,child,visible);
+ if(distance < bestDistance) {
+ bestDistance = distance;
+ node = child;
+ }
+ }
+ } while((child = SYNCTEX_SIBLING(child)));
+ }
+ return node;
+ }
+ }
+ }
+ return NULL;
+}
+
+/* Compares the locations of the hitPoint with the locations of the various nodes contained in the box.
+ * As it is an horizontal box, we only compare horizontal coordinates. */
+SYNCTEX_INLINE static int __synctex_eq_get_closest_children_in_hbox(synctex_point_t hitPoint, synctex_node_t node, synctex_node_set_t* bestNodesRef,synctex_distances_t* bestDistancesRef, synctex_bool_t visible);
+SYNCTEX_INLINE static int __synctex_eq_get_closest_children_in_hbox(synctex_point_t hitPoint, synctex_node_t node, synctex_node_set_t* bestNodesRef,synctex_distances_t* bestDistancesRef, synctex_bool_t visible) {
+ int result = 0;
+ if((node = SYNCTEX_CHILD(node))) {
+ do {
+ int off7 = _synctex_point_h_distance(hitPoint,node,visible);
+ if(off7 > 0) {
+ /* node is to the right of the hit point.
+ * We compare node and the previously recorded one, through the recorded distance.
+ * If the nodes have the same tag, prefer the one with the smallest line number,
+ * if the nodes also have the same line number, prefer the one with the smallest column. */
+ if(bestDistancesRef->right > off7) {
+ bestDistancesRef->right = off7;
+ bestNodesRef->right = node;
+ result |= SYNCTEX_MASK_RIGHT;
+ } else if(bestDistancesRef->right == off7 && bestNodesRef->right) {
+ if(SYNCTEX_TAG(bestNodesRef->right) == SYNCTEX_TAG(node)
+ && (SYNCTEX_LINE(bestNodesRef->right) > SYNCTEX_LINE(node)
+ || (SYNCTEX_LINE(bestNodesRef->right) == SYNCTEX_LINE(node)
+ && SYNCTEX_COLUMN(bestNodesRef->right) > SYNCTEX_COLUMN(node)))) {
+ bestNodesRef->right = node;
+ result |= SYNCTEX_MASK_RIGHT;
+ }
+ }
+ } else if(off7 == 0) {
+ /* hitPoint is inside node. */
+ bestDistancesRef->left = bestDistancesRef->right = 0;
+ bestNodesRef->left = node;
+ bestNodesRef->right = NULL;
+ result |= SYNCTEX_MASK_LEFT;
+ } else { /* here off7 < 0, hitPoint is to the right of node */
+ off7 = -off7;
+ if(bestDistancesRef->left > off7) {
+ bestDistancesRef->left = off7;
+ bestNodesRef->left = node;
+ result |= SYNCTEX_MASK_LEFT;
+ } else if(bestDistancesRef->left == off7 && bestNodesRef->left) {
+ if(SYNCTEX_TAG(bestNodesRef->left) == SYNCTEX_TAG(node)
+ && (SYNCTEX_LINE(bestNodesRef->left) > SYNCTEX_LINE(node)
+ || (SYNCTEX_LINE(bestNodesRef->left) == SYNCTEX_LINE(node)
+ && SYNCTEX_COLUMN(bestNodesRef->left) > SYNCTEX_COLUMN(node)))) {
+ bestNodesRef->left = node;
+ result |= SYNCTEX_MASK_LEFT;
+ }
+ }
+ }
+ } while((node = SYNCTEX_SIBLING(node)));
+ if(result & SYNCTEX_MASK_LEFT) {
+ /* the left node is new, try to narrow the result */
+ if((node = _synctex_eq_deepest_container(hitPoint,bestNodesRef->left,visible))) {
+ bestNodesRef->left = node;
+ }
+ if((node = _synctex_eq_closest_child(hitPoint,bestNodesRef->left,visible))) {
+ bestNodesRef->left = node;
+ }
+ }
+ if(result & SYNCTEX_MASK_RIGHT) {
+ /* the right node is new, try to narrow the result */
+ if((node = _synctex_eq_deepest_container(hitPoint,bestNodesRef->right,visible))) {
+ bestNodesRef->right = node;
+ }
+ if((node = _synctex_eq_closest_child(hitPoint,bestNodesRef->right,visible))) {
+ bestNodesRef->right = node;
+ }
+ }
+ }
+ return result;
+}
+SYNCTEX_INLINE static int __synctex_eq_get_closest_children_in_vbox(synctex_point_t hitPoint, synctex_node_t node, synctex_node_set_t* bestNodesRef,synctex_distances_t* bestDistancesRef,synctex_bool_t visible);
+SYNCTEX_INLINE static int __synctex_eq_get_closest_children_in_vbox(synctex_point_t hitPoint, synctex_node_t node, synctex_node_set_t* bestNodesRef,synctex_distances_t* bestDistancesRef,synctex_bool_t visible) {
+ int result = 0;
+ if((node = SYNCTEX_CHILD(node))) {
+ do {
+ int off7 = _synctex_point_v_distance(hitPoint,node,visible);/* this is what makes the difference with the h version above */
+ if(off7 > 0) {
+ /* node is to the top of the hit point (below because TeX is oriented from top to bottom.
+ * We compare node and the previously recorded one, through the recorded distance.
+ * If the nodes have the same tag, prefer the one with the smallest line number,
+ * if the nodes also have the same line number, prefer the one with the smallest column. */
+ if(bestDistancesRef->right > off7) {
+ bestDistancesRef->right = off7;
+ bestNodesRef->right = node;
+ result |= SYNCTEX_MASK_RIGHT;
+ } else if(bestDistancesRef->right == off7 && bestNodesRef->right) {
+ if(SYNCTEX_TAG(bestNodesRef->right) == SYNCTEX_TAG(node)
+ && (SYNCTEX_LINE(bestNodesRef->right) > SYNCTEX_LINE(node)
+ || (SYNCTEX_LINE(bestNodesRef->right) == SYNCTEX_LINE(node)
+ && SYNCTEX_COLUMN(bestNodesRef->right) > SYNCTEX_COLUMN(node)))) {
+ bestNodesRef->right = node;
+ result |= SYNCTEX_MASK_RIGHT;
+ }
+ }
+ } else if(off7 == 0) {
+ bestDistancesRef->left = bestDistancesRef->right = 0;
+ bestNodesRef->left = node;
+ bestNodesRef->right = NULL;
+ result |= SYNCTEX_MASK_LEFT;
+ } else { /* here off7 < 0 */
+ off7 = -off7;
+ if(bestDistancesRef->left > off7) {
+ bestDistancesRef->left = off7;
+ bestNodesRef->left = node;
+ result |= SYNCTEX_MASK_LEFT;
+ } else if(bestDistancesRef->left == off7 && bestNodesRef->left) {
+ if(SYNCTEX_TAG(bestNodesRef->left) == SYNCTEX_TAG(node)
+ && (SYNCTEX_LINE(bestNodesRef->left) > SYNCTEX_LINE(node)
+ || (SYNCTEX_LINE(bestNodesRef->left) == SYNCTEX_LINE(node)
+ && SYNCTEX_COLUMN(bestNodesRef->left) > SYNCTEX_COLUMN(node)))) {
+ bestNodesRef->left = node;
+ result |= SYNCTEX_MASK_LEFT;
+ }
+ }
+ }
+ } while((node = SYNCTEX_SIBLING(node)));
+ if(result & SYNCTEX_MASK_LEFT) {
+ /* the left node is new, try to narrow the result */
+ if((node = _synctex_eq_deepest_container(hitPoint,bestNodesRef->left,visible))) {
+ bestNodesRef->left = node;
+ }
+ if((node = _synctex_eq_closest_child(hitPoint,bestNodesRef->left,visible))) {
+ bestNodesRef->left = node;
+ }
+ }
+ if(result & SYNCTEX_MASK_RIGHT) {
+ /* the right node is new, try to narrow the result */
+ if((node = _synctex_eq_deepest_container(hitPoint,bestNodesRef->right,visible))) {
+ bestNodesRef->right = node;
+ }
+ if((node = _synctex_eq_closest_child(hitPoint,bestNodesRef->right,visible))) {
+ bestNodesRef->right = node;
+ }
+ }
+ }
+ return result;
+}
+SYNCTEX_INLINE static int _synctex_eq_get_closest_children_in_box(synctex_point_t hitPoint, synctex_node_t node, synctex_node_set_t* bestNodesRef,synctex_distances_t* bestDistancesRef,synctex_bool_t visible) {
+ if(node) {
+ switch(node->class->type) {
+ case synctex_node_type_hbox:
+ return __synctex_eq_get_closest_children_in_hbox(hitPoint, node, bestNodesRef, bestDistancesRef,visible);
+ case synctex_node_type_vbox:
+ return __synctex_eq_get_closest_children_in_vbox(hitPoint, node, bestNodesRef, bestDistancesRef,visible);
+ }
+ }
+ return 0;
+}
+
+SYNCTEX_INLINE static synctex_node_t __synctex_eq_closest_child(synctex_point_t hitPoint, synctex_node_t node,int* distanceRef, synctex_bool_t visible);
+SYNCTEX_INLINE static synctex_node_t __synctex_eq_closest_child(synctex_point_t hitPoint, synctex_node_t node,int* distanceRef, synctex_bool_t visible) {
+ synctex_node_t best_node = NULL;
+ if((node = SYNCTEX_CHILD(node))) {
+ do {
+ int distance = _synctex_node_distance_to_point(hitPoint,node,visible);
+ synctex_node_t candidate = NULL;
+ if(distance<=*distanceRef) {
+ *distanceRef = distance;
+ best_node = node;
+ }
+ switch(node->class->type) {
+ case synctex_node_type_vbox:
+ case synctex_node_type_hbox:
+ if((candidate = __synctex_eq_closest_child(hitPoint,node,distanceRef,visible))) {
+ best_node = candidate;
+ }
+ }
+ } while((node = SYNCTEX_SIBLING(node)));
+ }
+ return best_node;
+}
+SYNCTEX_INLINE static synctex_node_t _synctex_eq_closest_child(synctex_point_t hitPoint,synctex_node_t node, synctex_bool_t visible) {
+ if(node) {
+ switch(node->class->type) {
+ case synctex_node_type_hbox:
+ case synctex_node_type_vbox:
+ {
+ int best_distance = INT_MAX;
+ synctex_node_t best_node = __synctex_eq_closest_child(hitPoint,node,&best_distance,visible);
+ if((best_node)) {
+ synctex_node_t child = NULL;
+ switch(best_node->class->type) {
+ case synctex_node_type_vbox:
+ case synctex_node_type_hbox:
+ if((child = SYNCTEX_CHILD(best_node))) {
+ best_distance = _synctex_node_distance_to_point(hitPoint,child,visible);
+ while((child = SYNCTEX_SIBLING(child))) {
+ int distance = _synctex_node_distance_to_point(hitPoint,child,visible);
+ if(distance<=best_distance) {
+ best_distance = distance;
+ best_node = child;
+ }
+ }
+ }
+ }
+ }
+ return best_node;
+ }
+ }
+ }
+ return NULL;
+}
+
+# ifdef SYNCTEX_NOTHING
+# pragma mark -
+# pragma mark Updater
+# endif
+
+typedef int (*synctex_fprintf_t)(void *, const char * , ...); /* print formatted to either FILE * or gzFile */
+
+# define SYNCTEX_BITS_PER_BYTE 8
+
+struct __synctex_updater_t {
+ void *file; /* the foo.synctex or foo.synctex.gz I/O identifier */
+ synctex_fprintf_t fprintf; /* either fprintf or gzprintf */
+ int length; /* the number of chars appended */
+ struct _flags {
+ unsigned int no_gz:1; /* Whether zlib is used or not */
+ unsigned int reserved:SYNCTEX_BITS_PER_BYTE*sizeof(int)-1; /* Align */
+ } flags;
+};
+# define SYNCTEX_FILE updater->file
+# define SYNCTEX_NO_GZ ((updater->flags).no_gz)
+# define SYNCTEX_fprintf (*(updater->fprintf))
+
+synctex_updater_t synctex_updater_new_with_output_file(const char * output, const char * build_directory) {
+ synctex_updater_t updater = NULL;
+ char * synctex = NULL;
+ synctex_io_mode_t io_mode = synctex_io_mode_read;
+ const char * mode;
+ /* prepare the updater */
+ updater = (synctex_updater_t)_synctex_malloc(sizeof(synctex_updater_t));
+ if(NULL == updater) {
+ _synctex_error("! synctex_updater_new_with_file: malloc problem");
+ return NULL;
+ }
+ if(_synctex_open(output,build_directory,&synctex,&SYNCTEX_FILE,synctex_NO,&io_mode)
+ && _synctex_open(output,build_directory,&synctex,&SYNCTEX_FILE,synctex_YES,&io_mode)) {
+return_on_error:
+ free(updater);
+ return NULL;
+ }
+ /* OK, the file exists */
+ gzclose(SYNCTEX_FILE);
+ SYNCTEX_FILE = NULL;
+ SYNCTEX_NO_GZ = io_mode%2?synctex_NO:synctex_YES;
+ mode = synctex_io_modes[io_mode+synctex_io_mode_append];/* either "a" or "ab", depending on the file extension */
+ if(SYNCTEX_NO_GZ) {
+ if(NULL == (SYNCTEX_FILE = (void *)fopen(synctex,mode))) {
+no_write_error:
+ _synctex_error("! synctex_updater_new_with_file: Can't append to %s",synctex);
+ free(synctex);
+ goto return_on_error;
+ }
+ updater->fprintf = (synctex_fprintf_t)(&fprintf);
+ } else {
+ if(NULL == (SYNCTEX_FILE = (void *)gzopen(synctex,mode))) {
+ goto no_write_error;
+ }
+ updater->fprintf = (synctex_fprintf_t)(&gzprintf);
+ }
+ printf("SyncTeX: updating %s...",synctex);
+ free(synctex);
+ return updater;
+}
+
+
+void synctex_updater_append_magnification(synctex_updater_t updater, char * magnification){
+ if(NULL==updater) {
+ return;
+ }
+ if(magnification && strlen(magnification)) {
+ updater->length += SYNCTEX_fprintf(SYNCTEX_FILE,"Magnification:%s\n",magnification);
+ }
+}
+
+void synctex_updater_append_x_offset(synctex_updater_t updater, char * x_offset){
+ if(NULL==updater) {
+ return;
+ }
+ if(x_offset && strlen(x_offset)) {
+ updater->length += SYNCTEX_fprintf(SYNCTEX_FILE,"X Offset:%s\n",x_offset);
+ }
+}
+
+void synctex_updater_append_y_offset(synctex_updater_t updater, char * y_offset){
+ if(NULL==updater) {
+ return;
+ }
+ if(y_offset && strlen(y_offset)) {
+ updater->length += SYNCTEX_fprintf(SYNCTEX_FILE,"Y Offset:%s\n",y_offset);
+ }
+}
+
+void synctex_updater_free(synctex_updater_t updater){
+ if(NULL==updater) {
+ return;
+ }
+ if(updater->length>0) {
+ SYNCTEX_fprintf(SYNCTEX_FILE,"!%i\n",updater->length);
+ }
+ if (SYNCTEX_NO_GZ) {
+ fclose((FILE *)SYNCTEX_FILE);
+ } else {
+ gzclose((gzFile)SYNCTEX_FILE);
+ }
+ free(updater);
+ printf("... done.\n");
+ return;
+}
https://www.fi.muni.cz/~kas/git / evince.git / blobdiff