/* extensions.h Copyright 2009 Taco Hoekwater This file is part of LuaTeX. LuaTeX is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. LuaTeX is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU General Public License along with LuaTeX; if not, see . */ #ifndef EXTENSIONS_H # define EXTENSIONS_H extern alpha_file write_file[last_file_selector+1]; extern halfword write_file_mode[last_file_selector+1]; extern halfword write_file_translation[last_file_selector+1]; extern boolean write_open[last_file_selector+1]; # define valid_write_file(n) ((n>=0) && (n<=last_file_selector)) # define file_can_be_written(n) (valid_write_file(n) && write_open[n]) extern void expand_macros_in_tokenlist(halfword p); extern void write_out(halfword p); extern void finalize_write_files(void); extern void initialize_write_files(void); extern void close_write_file(int id); extern boolean open_write_file(int id, char *fn); extern scaled neg_wd; extern scaled pos_wd; extern scaled neg_ht; extern halfword write_loc; extern void do_extension(int immediate, int deferred); /* User defined whatsits can be inserted into node lists to pass data along from one lua call to another without interference from the typesetting engine itself. Each has an id, a type, and a value. The type of the value depends on the |user_node_type| field. */ extern void new_whatsit(int s); extern halfword concat_tokens(halfword q, halfword r); /* The \.{\\pagediscards} and \.{\\splitdiscards} commands share the command code |un_vbox| with \.{\\unvbox} and \.{\\unvcopy}, they are distinguished by their |chr_code| values |last_box_code| and |vsplit_code|. These |chr_code| values are larger than |box_code| and |copy_code|. */ extern boolean *eof_seen; /* has eof been seen? */ extern void print_group(boolean e); extern void group_trace(boolean e); extern save_pointer *grp_stack; /* initial |cur_boundary| */ extern halfword *if_stack; /* initial |cond_ptr| */ extern void group_warning(void); extern void if_warning(void); extern void file_warning(void); extern halfword last_line_fill; /* the |par_fill_skip| glue node of the new paragraph */ # define get_tex_dimen_register(j) dimen(j) # define get_tex_skip_register(j) skip(j) # define get_tex_mu_skip_register(j) mu_skip(j) # define get_tex_count_register(j) count(j) # define get_tex_attribute_register(j) attribute(j) # define get_tex_box_register(j) box(j) extern int get_tex_extension_count_register(int i); extern void set_tex_extension_count_register(int i, int d); extern int get_tex_extension_dimen_register(int i); extern void set_tex_extension_dimen_register(int i, int d); extern int get_tex_extension_toks_register (int i); extern int set_tex_dimen_register(int j, scaled v); extern int set_tex_skip_register(int j, halfword v); extern int set_tex_mu_skip_register(int j, halfword v); extern int set_tex_count_register(int j, scaled v); extern int set_tex_box_register(int j, scaled v); extern int set_tex_attribute_register(int j, scaled v); extern int get_tex_toks_register(int l); extern int set_tex_toks_register(int j, lstring s); extern int scan_tex_toks_register(int j, int c, lstring s); extern scaled get_tex_box_width(int j); extern int set_tex_box_width(int j, scaled v); extern scaled get_tex_box_height(int j); extern int set_tex_box_height(int j, scaled v); extern scaled get_tex_box_depth(int j); extern int set_tex_box_depth(int j, scaled v); /* Synctex variables */ extern int synctexoption; extern int synctexoffset; /* Here are extra variables for Web2c. */ extern pool_pointer edit_name_start; extern int edit_name_length, edit_line; extern boolean stop_at_space; extern int shellenabledp; extern int restrictedshell; extern char *output_comment; extern boolean debug_format_file; extern int last_saved_box_index ; extern int last_saved_image_index ; extern int last_saved_image_pages ; extern scaledpos last_position ; typedef enum { /* traditional extensions */ open_code = 0, write_code, close_code, reserved_extension_code, // 3: we moved special below immediate // reserved_immediate_code, // 4: same number as main codes, expected value // reserved_deferred_code, /* backend specific implementations */ special_code, save_box_resource_code, use_box_resource_code, save_image_resource_code, use_image_resource_code, end_local_code, /* backend */ dvi_extension_code, pdf_extension_code, } extension_codes ; extern void wrapup_leader(halfword p); #endif