mirror of
https://invent.kde.org/graphics/okular
synced 2024-08-27 11:40:07 +00:00
![Henrik Fehlauer](/assets/img/avatar_default.png)
Summary: This should prevent crashes when reloading some synctex-enabled pdf files created with newer versions of TeXLive. We also gain bugfixes, features and improved accuracy from the last 6 years of synctex development. Procedure followed: - svn co svn://tug.org/texlive/trunk/Build/source/texk/web2c/synctexdir - Check out revision 45150 - Update files present in core/synctex/* - Adapt Okular code to changes - Review and drop or update/apply old patches using quilt - Create missing patches for local synctex changes - New patch: Omit warning message when opening non-synctex pdf - Two new patches to fix more compiler warnings - New patch: Plug multiple leaks and prevent a segfault TODO for later: - Move sync file detection code to Okular to never call into synctex C code for non-synctex files - Evaluate feasibility of upstreaming all patches for TeXLive 2018 and using synctex as a library BUG: 383915 FIXED-IN: 17.12.0 Test Plan: - No crash in synctex on reloading empty.pdf from bugreport anymore. - Shift-clicking on a word in a simple pdf opens Kate with the corresponding tex line. - Forward and backward search in Kile seems to work. - Works with synctex files from both TeXLive 2015 and 2017. - PartTest::testForwardPDF still passes. - No additional memory leaks in autotests and with basic synctex and non-synctex usage of Okular. Reviewers: #okular, sander, #kile, aacid Reviewed By: #okular, aacid Subscribers: mludwig, aacid Tags: #okular Differential Revision: https://phabricator.kde.org/D7594
553 lines
20 KiB
C
553 lines
20 KiB
C
/*
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Copyright (c) 2008-2017 jerome DOT laurens AT u-bourgogne DOT fr
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This file is part of the __SyncTeX__ package.
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[//]: # (Latest Revision: Fri Jul 14 16:20:41 UTC 2017)
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[//]: # (Version: 1.19)
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See `synctex_parser_readme.md` for more details
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## License
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation
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files (the "Software"), to deal in the Software without
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restriction, including without limitation the rights to use,
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copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following
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conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE
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Except as contained in this notice, the name of the copyright holder
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shall not be used in advertising or otherwise to promote the sale,
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use or other dealings in this Software without prior written
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authorization from the copyright holder.
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*/
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#include "synctex_parser.h"
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#include "synctex_parser_utils.h"
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#ifndef __SYNCTEX_PARSER_PRIVATE__
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# define __SYNCTEX_PARSER_PRIVATE__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Reminder that the argument must not be NULL */
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typedef synctex_node_p synctex_non_null_node_p;
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/* Each node of the tree, except the scanner itself belongs to a class.
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* The class object is just a struct declaring the owning scanner
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* This is a pointer to the scanner as root of the tree.
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* The type is used to identify the kind of node.
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* The class declares pointers to a creator and a destructor method.
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* The log and display fields are used to log and display the node.
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* display will also display the child, sibling and parent sibling.
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* parent, child and sibling are used to navigate the tree,
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* from TeX box hierarchy point of view.
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* The friend field points to a method which allows to navigate from friend to friend.
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* A friend is a node with very close tag and line numbers.
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* Finally, the info field point to a method giving the private node info offset.
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*/
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/**
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* These are the masks for the synctex node types.
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* int's are 32 bits at leats.
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*/
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enum {
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synctex_shift_root,
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synctex_shift_no_root,
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synctex_shift_void,
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synctex_shift_no_void,
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synctex_shift_box,
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synctex_shift_no_box,
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synctex_shift_proxy,
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synctex_shift_no_proxy,
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synctex_shift_h,
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synctex_shift_v
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};
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enum {
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synctex_mask_root = 1,
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synctex_mask_no_root = synctex_mask_root<<1,
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synctex_mask_void = synctex_mask_no_root<<1,
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synctex_mask_no_void = synctex_mask_void<<1,
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synctex_mask_box = synctex_mask_no_void<<1,
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synctex_mask_no_box = synctex_mask_box<<1,
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synctex_mask_proxy = synctex_mask_no_box<<1,
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synctex_mask_no_proxy = synctex_mask_proxy<<1,
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synctex_mask_h = synctex_mask_no_proxy<<1,
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synctex_mask_v = synctex_mask_h<<1,
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};
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enum {
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synctex_mask_non_void_hbox = synctex_mask_no_void
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| synctex_mask_box
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| synctex_mask_h,
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synctex_mask_non_void_vbox = synctex_mask_no_void
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| synctex_mask_box
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| synctex_mask_v
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};
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typedef enum {
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synctex_node_mask_sf =
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synctex_mask_root
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|synctex_mask_no_void
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|synctex_mask_no_box
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|synctex_mask_no_proxy,
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synctex_node_mask_vbox =
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synctex_mask_no_root
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|synctex_mask_no_void
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|synctex_mask_box
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|synctex_mask_no_proxy
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|synctex_mask_v,
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synctex_node_mask_hbox =
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synctex_mask_no_root
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|synctex_mask_no_void
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|synctex_mask_box
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|synctex_mask_no_proxy
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|synctex_mask_h,
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synctex_node_mask_void_vbox =
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synctex_mask_no_root
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|synctex_mask_void
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|synctex_mask_box
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|synctex_mask_no_proxy
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|synctex_mask_v,
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synctex_node_mask_void_hbox =
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synctex_mask_no_root
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|synctex_mask_void
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|synctex_mask_box
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|synctex_mask_no_proxy
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|synctex_mask_h,
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synctex_node_mask_vbox_proxy =
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synctex_mask_no_root
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|synctex_mask_no_void
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|synctex_mask_box
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|synctex_mask_proxy
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|synctex_mask_v,
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synctex_node_mask_hbox_proxy =
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synctex_mask_no_root
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|synctex_mask_no_void
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|synctex_mask_box
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|synctex_mask_proxy
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|synctex_mask_h,
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synctex_node_mask_nvnn =
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synctex_mask_no_root
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|synctex_mask_void
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|synctex_mask_no_box
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|synctex_mask_no_proxy,
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synctex_node_mask_input =
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synctex_mask_root
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|synctex_mask_void
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|synctex_mask_no_box
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|synctex_mask_no_proxy,
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synctex_node_mask_proxy =
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synctex_mask_no_root
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|synctex_mask_void
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|synctex_mask_no_box
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|synctex_mask_proxy
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} synctex_node_mask_t;
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enum {
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/* input */
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synctex_tree_sibling_idx = 0,
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synctex_tree_s_input_max = 1,
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/* All */
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synctex_tree_s_parent_idx = 1,
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synctex_tree_sp_child_idx = 2,
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synctex_tree_spc_friend_idx = 3,
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synctex_tree_spcf_last_idx = 4,
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synctex_tree_spcfl_vbox_max = 5,
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/* hbox supplement */
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synctex_tree_spcfl_next_hbox_idx = 5,
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synctex_tree_spcfln_hbox_max = 6,
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/* hbox proxy supplement */
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synctex_tree_spcfln_target_idx = 6,
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synctex_tree_spcflnt_proxy_hbox_max = 7,
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/* vbox proxy supplement */
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synctex_tree_spcfl_target_idx = 5,
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synctex_tree_spcflt_proxy_vbox_max = 6,
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/* spf supplement*/
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synctex_tree_sp_friend_idx = 2,
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synctex_tree_spf_max = 3,
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/* box boundary supplement */
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synctex_tree_spf_arg_sibling_idx = 3,
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synctex_tree_spfa_max = 4,
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/* proxy supplement */
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synctex_tree_spf_target_idx = 3,
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synctex_tree_spft_proxy_max = 4,
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/* last proxy supplement */
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synctex_tree_spfa_target_idx = 4,
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synctex_tree_spfat_proxy_last_max = 5,
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/* sheet supplement */
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synctex_tree_s_child_idx = 1,
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synctex_tree_sc_next_hbox_idx = 2,
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synctex_tree_scn_sheet_max = 3,
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/* form supplement */
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synctex_tree_sc_target_idx = 2,
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synctex_tree_sct_form_max = 3,
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/* spct */
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synctex_tree_spc_target_idx = 3,
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synctex_tree_spct_handle_max = 4,
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};
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enum {
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/* input */
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synctex_data_input_tag_idx = 0,
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synctex_data_input_line_idx = 1,
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synctex_data_input_name_idx = 2,
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synctex_data_input_tln_max = 3,
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/* sheet */
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synctex_data_sheet_page_idx = 0,
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synctex_data_p_sheet_max = 1,
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/* form */
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synctex_data_form_tag_idx = 0,
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synctex_data_t_form_max = 1,
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/* tlchv */
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synctex_data_tag_idx = 0,
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synctex_data_line_idx = 1,
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synctex_data_column_idx = 2,
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synctex_data_h_idx = 3,
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synctex_data_v_idx = 4,
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synctex_data_tlchv_max = 5,
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/* tlchvw */
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synctex_data_width_idx = 5,
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synctex_data_tlchvw_max = 6,
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/* box */
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synctex_data_height_idx = 6,
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synctex_data_depth_idx = 7,
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synctex_data_box_max = 8,
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/* hbox supplement */
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synctex_data_mean_line_idx = 8,
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synctex_data_weight_idx = 9,
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synctex_data_h_V_idx = 10,
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synctex_data_v_V_idx = 11,
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synctex_data_width_V_idx = 12,
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synctex_data_height_V_idx = 13,
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synctex_data_depth_V_idx = 14,
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synctex_data_hbox_max = 15,
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/* ref */
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synctex_data_ref_tag_idx = 0,
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synctex_data_ref_h_idx = 1,
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synctex_data_ref_v_idx = 2,
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synctex_data_ref_thv_max = 3,
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/* proxy */
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synctex_data_proxy_h_idx = 0,
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synctex_data_proxy_v_idx = 1,
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synctex_data_proxy_hv_max = 2,
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};
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/* each synctex node has a class */
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typedef struct synctex_class_t synctex_class_s;
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typedef synctex_class_s * synctex_class_p;
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/* synctex_node_p is a pointer to a node
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* synctex_node_s is the target of the synctex_node_p pointer
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* It is a pseudo object oriented program.
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* class is a pointer to the class object the node belongs to.
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* implementation is meant to contain the private data of the node
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* basically, there are 2 kinds of information: navigation information and
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* synctex information. Both will depend on the type of the node,
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* thus different nodes will have different private data.
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* There is no inheritancy overhead.
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*/
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typedef union {
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synctex_node_p as_node;
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int as_integer;
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char * as_string;
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void * as_pointer;
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} synctex_data_u;
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typedef synctex_data_u * synctex_data_p;
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# if defined(SYNCTEX_USE_CHARINDEX)
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typedef unsigned int synctex_charindex_t;
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synctex_charindex_t synctex_node_charindex(synctex_node_p node);
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typedef synctex_charindex_t synctex_lineindex_t;
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synctex_lineindex_t synctex_node_lineindex(synctex_node_p node);
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synctex_node_p synctex_scanner_handle(synctex_scanner_p scanner);
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# define SYNCTEX_DECLARE_CHARINDEX \
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synctex_charindex_t char_index;\
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synctex_lineindex_t line_index;
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# define SYNCTEX_DECLARE_CHAR_OFFSET \
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synctex_charindex_t charindex_offset;
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# else
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# define SYNCTEX_DECLARE_CHARINDEX
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# define SYNCTEX_DECLARE_CHAR_OFFSET
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# endif
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struct synctex_node_t {
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SYNCTEX_DECLARE_CHARINDEX
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synctex_class_p class;
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#ifdef DEBUG
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synctex_data_u data[22];
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#else
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synctex_data_u data[1];
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#endif
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};
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typedef synctex_node_p * synctex_node_r;
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typedef struct {
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int h;
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int v;
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} synctex_point_s;
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typedef synctex_point_s * synctex_point_p;
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typedef struct {
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synctex_point_s min; /* top left */
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synctex_point_s max; /* bottom right */
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} synctex_box_s;
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typedef synctex_box_s * synctex_box_p;
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/**
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* These are the types of the synctex nodes.
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* No need to use them but the compiler needs them here.
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* There are 3 kinds of nodes.
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* - primary nodes
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* - proxies
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* - handles
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* Primary nodes are created at parse time
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* of the synctex file.
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* Proxies are used to support pdf forms.
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* The ref primary nodes are replaced by a tree
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* of proxy nodes which duplicate the tree of primary
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* nodes available in the refered form.
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* Roughly speaking, the primary nodes of the form
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* know what to display, the proxy nodes know where.
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* Handles are used in queries. They point to either
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* primary nodes or proxies.
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*/
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typedef enum {
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synctex_node_type_none = 0,
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synctex_node_type_input,
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synctex_node_type_sheet,
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synctex_node_type_form,
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synctex_node_type_ref,
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synctex_node_type_vbox,
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synctex_node_type_void_vbox,
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synctex_node_type_hbox,
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synctex_node_type_void_hbox,
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synctex_node_type_kern,
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synctex_node_type_glue,
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synctex_node_type_rule,
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synctex_node_type_math,
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synctex_node_type_boundary,
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synctex_node_type_box_bdry,
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synctex_node_type_proxy,
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synctex_node_type_proxy_last,
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synctex_node_type_proxy_vbox,
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synctex_node_type_proxy_hbox,
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synctex_node_type_handle,
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synctex_node_number_of_types
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} synctex_node_type_t;
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/* synctex_node_type gives the type of a given node,
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* synctex_node_isa gives the same information as a human readable text. */
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synctex_node_type_t synctex_node_type(synctex_node_p node);
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const char * synctex_node_isa(synctex_node_p node);
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synctex_node_type_t synctex_node_target_type(synctex_node_p node);
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synctex_node_type_t synctex_node_type(synctex_node_p node);
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const char * synctex_node_isa(synctex_node_p node);
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void synctex_node_log(synctex_node_p node);
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void synctex_node_display(synctex_node_p node);
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/* Given a node, access to the location in the synctex file where it is defined.
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*/
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int synctex_node_form_tag(synctex_node_p node);
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int synctex_node_mean_line(synctex_node_p node);
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int synctex_node_weight(synctex_node_p node);
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int synctex_node_child_count(synctex_node_p node);
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int synctex_node_h(synctex_node_p node);
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int synctex_node_v(synctex_node_p node);
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int synctex_node_width(synctex_node_p node);
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int synctex_node_box_h(synctex_node_p node);
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int synctex_node_box_v(synctex_node_p node);
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int synctex_node_box_width(synctex_node_p node);
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int synctex_node_box_height(synctex_node_p node);
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int synctex_node_box_depth(synctex_node_p node);
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int synctex_node_hbox_h(synctex_node_p node);
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int synctex_node_hbox_v(synctex_node_p node);
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int synctex_node_hbox_width(synctex_node_p node);
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int synctex_node_hbox_height(synctex_node_p node);
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int synctex_node_hbox_depth(synctex_node_p node);
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synctex_scanner_p synctex_scanner_new();
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synctex_node_p synctex_node_new(synctex_scanner_p scanner,synctex_node_type_t type);
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/**
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* Scanner display switcher getter.
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* If the switcher is 0, synctex_node_display is disabled.
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* If the switcher is <0, synctex_node_display has no limit.
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* If the switcher is >0, only the first switcher (as number) nodes are displayed.
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* - parameter: a scanner
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* - returns: an integer
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*/
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int synctex_scanner_display_switcher(synctex_scanner_p scanR);
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void synctex_scanner_set_display_switcher(synctex_scanner_p scanR, int switcher);
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/**
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* Iterator is the structure used to traverse
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* the answer to client queries.
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* First answers are the best matches, according
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* to criteria explained below.
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* Next answers are not ordered.
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* Objects are handles to nodes in the synctex node tree starting at scanner.
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*/
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typedef struct synctex_iterator_t synctex_iterator_s;
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typedef synctex_iterator_s * synctex_iterator_p;
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/**
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* Designated creator for a display query, id est,
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* forward navigation from source to output.
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* Returns NULL if the query has no answer.
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* Code example:
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* synctex_iterator_p iterator = NULL;
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* if ((iterator = synctex_iterator_new_display(...)) {
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* synctex_node_p node = NULL;
|
|
* while((node = synctex_iterator_next_result(iterator))) {
|
|
* do something with node...
|
|
* }
|
|
*/
|
|
synctex_iterator_p synctex_iterator_new_display(synctex_scanner_p scanner,const char * name,int line,int column, int page_hint);
|
|
/**
|
|
* Designated creator for an edit query, id est,
|
|
* backward navigation from output to source.
|
|
* Code example:
|
|
* synctex_iterator_p iterator = NULL;
|
|
* if ((iterator = synctex_iterator_new_edit(...)) {
|
|
* synctex_node_p node = NULL;
|
|
* while((node = synctex_iterator_next_result(iterator))) {
|
|
* do something with node...
|
|
* }
|
|
*/
|
|
synctex_iterator_p synctex_iterator_new_edit(synctex_scanner_p scanner,int page,float h,float v);
|
|
/**
|
|
* Free all the resources.
|
|
* - argument iterator: the object to free...
|
|
* You should free the iterator before the scanner
|
|
* owning the nodes it iterates with.
|
|
*/
|
|
void synctex_iterator_free(synctex_iterator_p iterator);
|
|
/**
|
|
* Wether the iterator actually points to an object.
|
|
* - argument iterator: the object to iterate on...
|
|
*/
|
|
synctex_bool_t synctex_iterator_has_next(synctex_iterator_p iterator);
|
|
/**
|
|
* Returns the pointed object and advance the cursor
|
|
* to the next object. Returns NULL and does nothing
|
|
* if the end has already been reached.
|
|
* - argument iterator: the object to iterate on...
|
|
*/
|
|
synctex_node_p synctex_iterator_next_result(synctex_iterator_p iterator);
|
|
/**
|
|
* Reset the cursor position to the first result.
|
|
* - argument iterator: the object to iterate on...
|
|
*/
|
|
int synctex_iterator_reset(synctex_iterator_p iterator);
|
|
/**
|
|
* The number of objects left for traversal.
|
|
* - argument iterator: the object to iterate on...
|
|
*/
|
|
int synctex_iterator_count(synctex_iterator_p iterator);
|
|
|
|
/**
|
|
* The target of the node, either a handle or a proxy.
|
|
*/
|
|
synctex_node_p synctex_node_target(synctex_node_p node);
|
|
|
|
#ifndef SYNCTEX_NO_UPDATER
|
|
/* 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_s;
|
|
typedef synctex_updater_s * synctex_updater_p;
|
|
|
|
/* Designated initializer.
|
|
* Once you are done with your whole job,
|
|
* free the updater */
|
|
synctex_updater_p 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_p updater, char * magnification);
|
|
void synctex_updater_append_x_offset(synctex_updater_p updater, char * x_offset);
|
|
void synctex_updater_append_y_offset(synctex_updater_p updater, char * y_offset);
|
|
|
|
/* You MUST free the updater, once everything is properly appended */
|
|
void synctex_updater_free(synctex_updater_p updater);
|
|
#endif
|
|
|
|
#if defined(SYNCTEX_DEBUG)
|
|
# include "assert.h"
|
|
# define SYNCTEX_ASSERT assert
|
|
#else
|
|
# define SYNCTEX_ASSERT(UNUSED)
|
|
#endif
|
|
|
|
#if defined(SYNCTEX_TESTING)
|
|
#warning TESTING IS PROHIBITED
|
|
#if __clang__
|
|
#define __PRAGMA_PUSH_NO_EXTRA_ARG_WARNINGS \
|
|
_Pragma("clang diagnostic push") \
|
|
_Pragma("clang diagnostic ignored \"-Wformat-extra-args\"")
|
|
|
|
#define __PRAGMA_POP_NO_EXTRA_ARG_WARNINGS _Pragma("clang diagnostic pop")
|
|
#else
|
|
#define __PRAGMA_PUSH_NO_EXTRA_ARG_WARNINGS
|
|
#define __PRAGMA_POP_NO_EXTRA_ARG_WARNINGS
|
|
#endif
|
|
|
|
# define SYNCTEX_TEST_BODY(counter, condition, desc, ...) \
|
|
do { \
|
|
__PRAGMA_PUSH_NO_EXTRA_ARG_WARNINGS \
|
|
if (!(condition)) { \
|
|
++counter; \
|
|
printf("**** Test failed: %s\nfile %s\nfunction %s\nline %i\n",#condition,__FILE__,__FUNCTION__,__LINE__); \
|
|
printf((desc), ##__VA_ARGS__); \
|
|
} \
|
|
__PRAGMA_POP_NO_EXTRA_ARG_WARNINGS \
|
|
} while(0)
|
|
|
|
# define SYNCTEX_TEST_PARAMETER(counter, condition) SYNCTEX_TEST_BODY(counter, (condition), "Invalid parameter not satisfying: %s", #condition)
|
|
|
|
int synctex_test_input(synctex_scanner_p scanner);
|
|
int synctex_test_proxy(synctex_scanner_p scanner);
|
|
int synctex_test_tree(synctex_scanner_p scanner);
|
|
int synctex_test_page(synctex_scanner_p scanner);
|
|
int synctex_test_handle(synctex_scanner_p scanner);
|
|
int synctex_test_display_query(synctex_scanner_p scanner);
|
|
int synctex_test_charindex();
|
|
int synctex_test_sheet_1();
|
|
int synctex_test_sheet_2();
|
|
int synctex_test_sheet_3();
|
|
int synctex_test_form();
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|