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+/* 
+Copyright (c) 2008, 2009, 2010 jerome DOT laurens AT u-bourgogne DOT fr
+
+This file is part of the SyncTeX package.
+
+Latest Revision: Wed Jul  1 11:16:51 UTC 2009
+
+Version: 1.12
+See synctex_parser_readme.txt for more details
+
+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
+
+*/
+
+#ifndef __SYNCTEX_PARSER__
+#   define __SYNCTEX_PARSER__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*  synctex_node_t is the type for all synctex nodes.
+ *  The synctex file is parsed into a tree of nodes, either sheet, boxes, math nodes... */
+typedef struct _synctex_node *  synctex_node_t;
+
+/*  The main synctex object is a scanner
+ *  Its implementation is considered private.
+ *  The basic workflow is
+ * - create a "synctex scanner" with the contents of a file
+ * - perform actions on that scanner like display or edit queries
+ * - free the scanner when the work is done
+ */
+typedef struct __synctex_scanner_t _synctex_scanner_t;
+typedef _synctex_scanner_t *  synctex_scanner_t;
+
+/*  This is the designated method to create a new synctex scanner object.
+ *  output is the pdf/dvi/xdv file associated to the synctex file.
+ *  If necessary, it can be the tex file that originated the synctex file
+ *  but this might cause problems if the \jobname has a custom value.
+ *  Despite this method can accept a relative path in practice,
+ *  you should only pass a full path name.
+ *  The path should be encoded by the underlying file system,
+ *  assuming that it is based on 8 bits characters, including UTF8,
+ *  not 16 bits nor 32 bits.
+ *  The last file extension is removed and replaced by the proper extension.
+ *  Then the private method _synctex_scanner_new_with_contents_of_file is called.
+ *  NULL is returned in case of an error or non existent file.
+ *  Once you have a scanner, use the synctex_display_query and synctex_edit_query below.
+ *	The new "build_directory" argument is available since version 1.5.
+ *	It is the directory where all the auxiliary stuff is created.
+ *	Sometimes, the synctex output file and the pdf, dvi or xdv files are not created in the same directory.
+ *	This is the case in MikTeX (I will include this into TeX Live).
+ *	This directory path can be nil, it will be ignored.
+ *	It can be either absolute or relative to the directory of the output pdf (dvi or xdv) file.
+ *	If no synctex file is found in the same directory as the output file, then we try to find one in the build directory.
+ *  Please note that this new "build_directory" is provided as a convenient argument but should not be used.
+ *  In fact, this is implempented as a work around of a bug in MikTeX where the synctex file does not follow the pdf file.
+ *  The new "parse" argument is available since version 1.5. In general, use 1.
+ *  Use 0 only if you do not want to parse the content but just check the existence.
+ */
+synctex_scanner_t synctex_scanner_new_with_output_file(const char * output, const char * build_directory, int parse);
+
+/*  This is the designated method to delete a synctex scanner object.
+ *  Frees all the memory, you must call it when you are finished with the scanner.
+ */
+void synctex_scanner_free(synctex_scanner_t scanner);
+
+/*  Send this message to force the scanner to parse the contents of the synctex output file.
+ *  Nothing is performed if the file was already parsed.
+ *  In each query below, this message is sent, but if you need to access information more directly,
+ *  you must be sure that the parsing did occur.
+ *  Usage:
+ *		if((my_scanner = synctex_scanner_parse(my_scanner))) {
+ *			continue with my_scanner...
+ *		} else {
+ *			there was a problem
+ *		}
+ */
+synctex_scanner_t synctex_scanner_parse(synctex_scanner_t scanner);
+
+/*  The main entry points.
+ *  Given the file name, a line and a column number, synctex_display_query returns the number of nodes
+ *  satisfying the contrain. Use code like
+ *
+ *     if(synctex_display_query(scanner,name,line,column)>0) {
+ *         synctex_node_t node;
+ *         while((node = synctex_next_result(scanner))) {
+ *             // do something with node
+ *             ...
+ *         }
+ *     }
+ *
+ *  For example, one can
+ * - highlight each resulting node in the output, using synctex_node_h and synctex_node_v
+ * - highlight all the rectangles enclosing those nodes, using synctex_box_... functions
+ * - highlight just the character using that information
+ *
+ *  Given the page and the position in the page, synctex_edit_query returns the number of nodes
+ *  satisfying the contrain. Use code like
+ *
+ *     if(synctex_edit_query(scanner,page,h,v)>0) {
+ *         synctex_node_t node;
+ *         while(node = synctex_next_result(scanner)) {
+ *             // do something with node
+ *             ...
+ *         }
+ *     }
+ *
+ *  For example, one can
+ * - highlight each resulting line in the input,
+ * - highlight just the character using that information
+ *
+ *  page is 1 based
+ *  h and v are coordinates in 72 dpi unit, relative to the top left corner of the page.
+ *  If you make a new query, the result of the previous one is discarded.
+ *  If one of this function returns a non positive integer,
+ *  it means that an error occurred.
+ *
+ *  Both methods are conservative, in the sense that matching is weak.
+ *  If the exact column number is not found, there will be an answer with the whole line.
+ *
+ *  Sumatra-PDF, Skim, iTeXMac2 and Texworks are examples of open source software that use this library.
+ *  You can browse their code for a concrete implementation.
+ */
+int synctex_display_query(synctex_scanner_t scanner,const char *  name,int line,int column);
+int synctex_edit_query(synctex_scanner_t scanner,int page,float h,float v);
+synctex_node_t synctex_next_result(synctex_scanner_t scanner);
+
+/*  Display all the information contained in the scanner object.
+ *  If the records are too numerous, only the first ones are displayed.
+ *  This is mainly for informatinal purpose to help developers.
+ */
+void synctex_scanner_display(synctex_scanner_t scanner);
+
+/*  The x and y offset of the origin in TeX coordinates. The magnification
+   These are used by pdf viewers that want to display the real box size.
+   For example, getting the horizontal coordinates of a node would require
+   synctex_node_box_h(node)*synctex_scanner_magnification(scanner)+synctex_scanner_x_offset(scanner)
+   Getting its TeX width would simply require
+   synctex_node_box_width(node)*synctex_scanner_magnification(scanner)
+   but direct methods are available for that below.
+ */
+int synctex_scanner_x_offset(synctex_scanner_t scanner);
+int synctex_scanner_y_offset(synctex_scanner_t scanner);
+float synctex_scanner_magnification(synctex_scanner_t scanner);
+
+/*  Managing the input file names.
+ *  Given a tag, synctex_scanner_get_name will return the corresponding file name.
+ *  Conversely, given a file name, synctex_scanner_get_tag will retur, the corresponding tag.
+ *  The file name must be the very same as understood by TeX.
+ *  For example, if you \input myDir/foo.tex, the file name is myDir/foo.tex.
+ *  No automatic path expansion is performed.
+ *  Finally, synctex_scanner_input is the first input node of the scanner.
+ *  To browse all the input node, use a loop like
+ *
+ *     if((input_node = synctex_scanner_input(scanner))){
+ *         do {
+ *             blah
+ *         } while((input_node=synctex_node_sibling(input_node)));
+ *     }
+ *
+ *  The output is the name that was used to create the scanner.
+ *  The synctex is the real name of the synctex file,
+ *  it was obtained from output by setting the proper file extension.
+ */
+const char * synctex_scanner_get_name(synctex_scanner_t scanner,int tag);
+int synctex_scanner_get_tag(synctex_scanner_t scanner,const char * name);
+synctex_node_t synctex_scanner_input(synctex_scanner_t scanner);
+const char * synctex_scanner_get_output(synctex_scanner_t scanner);
+const char * synctex_scanner_get_synctex(synctex_scanner_t scanner);
+
+/*  Browsing the nodes
+ *  parent, child and sibling are standard names for tree nodes.
+ *  The parent is one level higher, the child is one level deeper,
+ *  and the sibling is at the same level.
+ *  The sheet of a node is the first ancestor, it is of type sheet.
+ *  A node and its sibling have the same parent.
+ *  A node is the parent of its child.
+ *  A node is either the child of its parent,
+ *  or belongs to the sibling chain of its parent's child.
+ *  The next node is either the child, the sibling or the parent's sibling,
+ *  unless the parent is a sheet.
+ *  This allows to navigate through all the nodes of a given sheet node:
+ *
+ *     synctex_node_t node = sheet;
+ *     while((node = synctex_node_next(node))) {
+ *         // do something with node
+ *     }
+ *
+ *  With synctex_sheet_content, you can retrieve the sheet node given the page.
+ *  The page is 1 based, according to TeX standards.
+ *  Conversely synctex_node_sheet allows to retrieve the sheet containing a given node.
+ */
+synctex_node_t synctex_node_parent(synctex_node_t node);
+synctex_node_t synctex_node_sheet(synctex_node_t node);
+synctex_node_t synctex_node_child(synctex_node_t node);
+synctex_node_t synctex_node_sibling(synctex_node_t node);
+synctex_node_t synctex_node_next(synctex_node_t node);
+synctex_node_t synctex_sheet_content(synctex_scanner_t scanner,int page);
+
+/*  These are the types of the synctex nodes */
+typedef enum {
+	synctex_node_type_error = 0,
+	synctex_node_type_input,
+	synctex_node_type_sheet,
+	synctex_node_type_vbox,
+	synctex_node_type_void_vbox,
+	synctex_node_type_hbox,
+	synctex_node_type_void_hbox,
+	synctex_node_type_kern,
+	synctex_node_type_glue,
+	synctex_node_type_math,
+	synctex_node_type_boundary,
+	synctex_node_number_of_types
+} synctex_node_type_t;
+
+/*  synctex_node_type gives the type of a given node,
+ *  synctex_node_isa gives the same information as a human readable text. */
+synctex_node_type_t synctex_node_type(synctex_node_t node);
+const char * synctex_node_isa(synctex_node_t node);
+
+/*  This is primarily used for debugging purpose.
+ *  The second one logs information for the node and recursively displays information for its next node */
+void synctex_node_log(synctex_node_t node);
+void synctex_node_display(synctex_node_t node);
+
+/*  Given a node, access to its tag, line and column.
+ *  The line and column numbers are 1 based.
+ *  The latter is not yet fully supported in TeX, the default implementation returns 0 which means the whole line.
+ *  When the tag is known, the scanner of the node will give the corresponding file name.
+ *  When the tag is known, the scanner of the node will give the name.
+ */
+int synctex_node_tag(synctex_node_t node);
+int synctex_node_line(synctex_node_t node);
+int synctex_node_column(synctex_node_t node);
+
+/*  This is the page where the node appears.
+ *  This is a 1 based index as given by TeX.
+ */
+int synctex_node_page(synctex_node_t node);
+
+/*  For quite all nodes, horizontal, vertical coordinates, and width.
+ *  These are expressed in TeX small points coordinates, with origin at the top left corner.
+ */
+int synctex_node_h(synctex_node_t node);
+int synctex_node_v(synctex_node_t node);
+int synctex_node_width(synctex_node_t node);
+
+/*  For all nodes, dimensions of the enclosing box.
+ *  These are expressed in TeX small points coordinates, with origin at the top left corner.
+ *  A box is enclosing itself.
+ */
+int synctex_node_box_h(synctex_node_t node);
+int synctex_node_box_v(synctex_node_t node);
+int synctex_node_box_width(synctex_node_t node);
+int synctex_node_box_height(synctex_node_t node);
+int synctex_node_box_depth(synctex_node_t node);
+
+/*  For quite all nodes, horizontal, vertical coordinates, and width.
+ *  The visible dimensions are bigger than real ones to compensate 0 width boxes
+ *  that do contain nodes.
+ *  These are expressed in page coordinates, with origin at the top left corner.
+ *  A box is enclosing itself.
+ */
+float synctex_node_visible_h(synctex_node_t node);
+float synctex_node_visible_v(synctex_node_t node);
+float synctex_node_visible_width(synctex_node_t node);
+/*  For all nodes, visible dimensions of the enclosing box.
+ *  A box is enclosing itself.
+ *  The visible dimensions are bigger than real ones to compensate 0 width boxes
+ *  that do contain nodes.
+ */
+float synctex_node_box_visible_h(synctex_node_t node);
+float synctex_node_box_visible_v(synctex_node_t node);
+float synctex_node_box_visible_width(synctex_node_t node);
+float synctex_node_box_visible_height(synctex_node_t node);
+float synctex_node_box_visible_depth(synctex_node_t node);
+
+/*  The main synctex updater object.
+ *  This object is used to append information to the synctex file.
+ *  Its implementation is considered private.
+ *  It is used by the synctex command line tool to take into account modifications
+ *  that could occur while postprocessing files by dvipdf like filters.
+ */
+typedef struct __synctex_updater_t _synctex_updater_t;
+typedef _synctex_updater_t * synctex_updater_t;
+
+/*  Designated initializer.
+ *  Once you are done with your whole job,
+ *  free the updater */
+synctex_updater_t synctex_updater_new_with_output_file(const char * output, const char * directory);
+
+/*  Use the next functions to append records to the synctex file,
+ *  no consistency tests made on the arguments */
+void synctex_updater_append_magnification(synctex_updater_t updater, char *  magnification);
+void synctex_updater_append_x_offset(synctex_updater_t updater, char *  x_offset);
+void synctex_updater_append_y_offset(synctex_updater_t updater, char *  y_offset);
+
+/*  You MUST free the updater, once everything is properly appended */
+void synctex_updater_free(synctex_updater_t updater);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif