contrib/texinfo-4/makeinfo/makeinfo.h

   1 /* makeinfo.h -- declarations for Makeinfo.
   2    $Id: makeinfo.h,v 1.17 2004/11/30 02:03:23 karl Exp $
   3
   4    Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free
   5    Software Foundation, Inc.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2, or (at your option)
  10    any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20
  21    Written by Brian Fox (bfox@ai.mit.edu). */
  22
  23 #ifndef MAKEINFO_H
  24 #define MAKEINFO_H
  25
  26 #ifdef COMPILING_MAKEINFO
  27 #  define DECLARE(type,var,init) type var = init
  28 #else
  29 #  define DECLARE(type,var,init) extern type var
  30 #endif
  31
  32 /* Hardcoded per GNU standards, not dependent on argv[0].  */
  33 DECLARE (char *, progname, "makeinfo");
  34 \f
  35 /* Nonzero means a string is in execution, as opposed to a file. */
  36 DECLARE (int, executing_string, 0);
  37
  38 /* Nonzero means to inhibit writing macro expansions to the output
  39    stream, because it has already been written. */
  40 DECLARE (int, me_inhibit_expansion, 0);
  41 \f
  42 /* Current output stream. */
  43 DECLARE (FILE *, output_stream, NULL);
  44
  45 DECLARE (char *, pretty_output_filename, NULL);
  46
  47 /* Current output file name.  */
  48 DECLARE (char *, current_output_filename, NULL);
  49
  50 /* Output paragraph buffer. */
  51 DECLARE (unsigned char *, output_paragraph, NULL);
  52
  53 /* Offset into OUTPUT_PARAGRAPH. */
  54 DECLARE (int, output_paragraph_offset, 0);
  55
  56 /* The output paragraph "cursor" horizontal position. */
  57 DECLARE (int, output_column, 0);
  58
  59 /* Position in the output file. */
  60 DECLARE (int, output_position, 0);
  61
  62 /* Number of lines in the output.  */
  63 DECLARE (int, output_line_number, 1);
  64 DECLARE (int, node_line_number, 0);
  65
  66 /* The offset into OUTPUT_PARAGRAPH where we have a meta character
  67    produced by a markup such as @code or @dfn.  */
  68 DECLARE (int, meta_char_pos, -1);
  69
  70 /* Nonzero means output_paragraph contains text. */
  71 DECLARE (int, paragraph_is_open, 0);
  72
  73 /* Nonzero means that `start_paragraph' MUST be called before we pay
  74    any attention to `close_paragraph' calls. */
  75 DECLARE (int, must_start_paragraph, 0);
  76
  77 /* Nonzero means that we have seen "@top" once already. */
  78 DECLARE (int, top_node_seen, 0);
  79
  80 /* Nonzero means that we have seen a non-"@top" node already. */
  81 DECLARE (int, non_top_node_seen, 0);
  82
  83 /* Nonzero indicates that indentation is temporarily turned off. */
  84 DECLARE (int, no_indent, 1);
  85
  86 /* The amount of indentation to apply at the start of each line. */
  87 DECLARE (int, current_indent, 0);
  88
  89 /* Nonzero means that we suppress the indentation of the first paragraph
  90    following any section heading.  */
  91 DECLARE (int, do_first_par_indent, 0);
  92
  93 /* Amount by which @example indentation increases/decreases. */
  94 DECLARE (int, example_indentation_increment, 5);
  95
  96 /* Amount by which @table, @defun, etc. indentation increases/decreases.  */
  97 DECLARE (int, default_indentation_increment, 5);
  98
  99 /* Amount by which xml indentation increases/decreases.
 100    Zero means unnecessary whitespace is compressed.  */
 101 DECLARE (int, xml_indentation_increment, 2);
 102
 103 /* Nonzero indicates that filling a line also indents the new line. */
 104 DECLARE (int, indented_fill, 0);
 105
 106 /* Nonzero means forcing output text to be flushright. */
 107 DECLARE (int, force_flush_right, 0);
 108
 109 /* The column at which long lines are broken. */
 110 DECLARE (int, fill_column, 72);
 111
 112 /* Nonzero means that words are not to be split, even in long lines.  This
 113    gets changed for cm_w (). */
 114 DECLARE (int, non_splitting_words, 0);
 115
 116 /* Nonzero means that we are currently hacking the insides of an
 117    insertion which would use a fixed width font. */
 118 DECLARE (int, in_fixed_width_font, 0);
 119
 120 /* Nonzero if we are currently processing a multitable command */
 121 DECLARE (int, multitable_active, 0);
 122
 123 /* Nonzero means that we're generating HTML. (--html) */
 124 DECLARE (int, html, 0);
 125
 126 /* Nonzero means that we're generating XML. (--xml) */
 127 DECLARE (int, xml, 0);
 128
 129 /* Nonzero means that we're generating DocBook. (--docbook) */
 130 DECLARE (int, docbook, 0);
 131
 132 /* Nonzero means true 8-bit output for Info and plain text.
 133    (--enable-encoding) */
 134 DECLARE (int, enable_encoding, 0);
 135
 136 /* Nonzero means escape characters in HTML output. */
 137 DECLARE (int, escape_html, 1);
 138
 139 /* Access key number for next menu entry to be generated (1 to 9, or 10 to
 140    mean no access key)  */
 141 DECLARE (int, next_menu_item_number, 1);
 142
 143 /* Nonzero means that the use of paragraph_start_indent is inhibited.
 144    @example uses this to line up the left columns of the example text.
 145    A negative value for this variable is incremented each time it is used.
 146    @noindent uses this to inhibit indentation for a single paragraph.  */
 147 DECLARE (int, inhibit_paragraph_indentation, 0);
 148
 149 /* Nonzero indicates that filling will take place on long lines. */
 150 DECLARE (int, filling_enabled, 1);
 151
 152 /* The current node's node name. */
 153 DECLARE (char *, current_node, NULL);
 154
 155 /* Command name in the process of being hacked. */
 156 DECLARE (char *, command, NULL);
 157
 158 /* Nonzero if we have seen an @titlepage command.  */
 159 DECLARE (int, titlepage_cmd_present, 0);
 160
 161 /* @copying ... @end copying. */
 162 DECLARE (char *, copying_text, NULL);
 163
 164 /* @documentdescription ... @end documentdescription. */
 165 DECLARE (const char *, document_description, NULL);
 166
 167 /* Nonzero if the last character inserted has the syntax class of NEWLINE. */
 168 DECLARE (int, last_char_was_newline, 1);
 169
 170 /* The current input file state. */
 171 DECLARE (char *, input_filename, (char *)NULL);
 172 DECLARE (char *, input_text, (char *)NULL);
 173 DECLARE (int, input_text_length, 0);
 174 DECLARE (int, input_text_offset, 0);
 175 DECLARE (int, line_number, 0);
 176 DECLARE (char *, toplevel_output_filename, NULL);
 177 #define curchar() input_text[input_text_offset]
 178 \f
 179 /* A colon separated list of directories to search for files included
 180    with @include.  This can be controlled with the `-I' option to makeinfo. */
 181 DECLARE (char *, include_files_path, NULL);
 182
 183 /* The filename of the current input file.  This is never freed. */
 184 DECLARE (char *, node_filename, NULL);
 185 \f
 186 /* Name of CSS file to include, if any.  (--css-include).  */
 187 DECLARE (char *, css_include, NULL);
 188
 189 /* Nonzero means do not output "Node: Foo" for node separations, that
 190    is, generate plain text.  (--no-headers) */
 191 DECLARE (int, no_headers, 0);
 192
 193 /* Nonzero means that we process @docbook and @ifdocbook.  (--ifdocbook) */
 194 DECLARE (int, process_docbook, 0);
 195
 196 /* Nonzero means that we process @html and @rawhtml even when not
 197    generating HTML.  (--ifhtml) */
 198 DECLARE (int, process_html, 0);
 199
 200 /* Positive means process @ifinfo (even if not generating Info);
 201    zero means don't process @ifinfo (even if we are);
 202    -1 means we don't know yet.  (--ifinfo) */
 203 DECLARE (int, process_info, -1);
 204
 205 /* Positive means process @ifplaintext (even if not generating plain text);
 206    zero means we don't process @ifplaintext (even if we are);
 207    -1 means we don't know yet.  (--ifplaintext) */
 208 DECLARE (int, process_plaintext, -1);
 209
 210 /* Nonzero means that we process @tex and @iftex.  (--iftex) */
 211 DECLARE (int, process_tex, 0);
 212
 213 /* Nonzero means that we process @xml and @ifxml.  (--ifxml) */
 214 DECLARE (int, process_xml, 0);
 215
 216 /* Maximum number of references to a single node before complaining.
 217    (--reference-limit) */
 218 DECLARE (int, reference_warning_limit, 1000);
 219
 220 /* Default is to check node references.  (--no-validate) */
 221 DECLARE (int, validating, 1);
 222
 223 /* Nonzero means print information about what is going on.  (--verbose) */
 224 DECLARE (int, verbose_mode, 0);
 225
 226 /* Nonzero means prefix each @chapter, ... with a number like
 227    1, 1.1, etc.  (--number-sections) */
 228 DECLARE (int, number_sections, 1);
 229
 230 /* Nonzero means split size.  When zero, DEFAULT_SPLIT_SIZE is used. */
 231 DECLARE (int, split_size, 0);
 232
 233 /* Nonzero means expand node names and references while validating.
 234    This will avoid errors when the Texinfo document uses features
 235    like @@ and @value inconsistently in node names, but will slow
 236    the program by about 80%.  You HAVE been warned.  */
 237 DECLARE (int, expensive_validation, 0);
 238 \f
 239 /* C's standard macros don't check to make sure that the characters being
 240    changed are within range.  So I have to check explicitly. */
 241
 242 #define coerce_to_upper(c) ((islower(c) ? toupper(c) : (c)))
 243 #define coerce_to_lower(c) ((isupper(c) ? tolower(c) : (c)))
 244
 245 #define control_character_bit 0x40 /* %01000000, must be off. */
 246 #define meta_character_bit 0x080/* %10000000, must be on.  */
 247 #define CTL(c) ((c) & (~control_character_bit))
 248 #define UNCTL(c) coerce_to_upper(((c)|control_character_bit))
 249 #define META(c) ((c) | (meta_character_bit))
 250 #define UNMETA(c) ((c) & (~meta_character_bit))
 251
 252 #define whitespace(c)       ((c) == '\t' || (c) == ' ')
 253 #define sentence_ender(c)   ((c) == '.'  || (c) == '?' || (c) == '!')
 254 #define cr_or_whitespace(c) (whitespace(c) || (c) == '\r' || (c) == '\n')
 255
 256 #ifndef isletter
 257 #define isletter(c) (((c) >= 'A' && (c) <= 'Z') || ((c) >= 'a' && (c) <= 'z'))
 258 #endif
 259
 260 #ifndef isupper
 261 #define isupper(c) ((c) >= 'A' && (c) <= 'Z')
 262 #endif
 263
 264 #ifndef isdigit
 265 #define isdigit(c)  ((c) >= '0' && (c) <= '9')
 266 #endif
 267
 268 #ifndef digit_value
 269 #define digit_value(c) ((c) - '0')
 270 #endif
 271
 272 /* These characters are not really HTML-safe (with strict XHTML),
 273    and also there are possible collisions.  That's the whole reason we
 274    designed a new conversion scheme in the first place.  But we
 275    nevertheless need to generate the old names.  See
 276    `add_escaped_anchor_name' in html.c.  */
 277 #define OLD_HTML_SAFE "$-_.+!*'()"
 278 #define OLD_URL_SAFE_CHAR(ch) (strchr (OLD_HTML_SAFE, ch))
 279
 280 /* For the current/stable scheme.  */
 281 #define URL_SAFE_CHAR(ch) (isalnum (ch))
 282
 283 #define COMMAND_PREFIX '@'
 284
 285 #define END_VERBATIM "end verbatim"
 286
 287 /* Stuff for splitting large files.  The numbers for Emacs
 288    texinfo-format-buffer are much smaller, but memory capacities have
 289    increased so much, 50k info files seem a bit tiny these days.  */
 290 #define DEFAULT_SPLIT_SIZE 300000
 291 DECLARE (int, splitting, 1);    /* Defaults to true for now. */
 292
 293 #define skip_whitespace() \
 294      while ((input_text_offset != input_text_length) && \
 295              whitespace (curchar())) \
 296        input_text_offset++
 297
 298 #define skip_whitespace_and_newlines() \
 299   do { \
 300    while (input_text_offset != input_text_length \
 301           && cr_or_whitespace (curchar ())) \
 302       { \
 303          if (curchar () == '\n') \
 304            line_number++; \
 305          input_text_offset++; \
 306       } \
 307    } while (0)
 308
 309 /* Return nonzero if STRING is the text at input_text + input_text_offset,
 310    else zero. */
 311 #define looking_at(string) \
 312   (strncmp (input_text + input_text_offset, string, strlen (string)) == 0)
 313
 314 /* Any list with a member named `next'.  */
 315 typedef struct generic_list {
 316   struct generic_list *next;
 317 } GENERIC_LIST;
 318
 319 /* Reverse the order of a list.  */
 320 extern GENERIC_LIST * reverse_list (GENERIC_LIST *list);
 321
 322 /* Possibly return Local Variables trailer for Info output.  */
 323 extern char *info_trailer (void),
 324   *expansion (char *str, int implicit_code),
 325   *text_expansion (char *str),
 326   *maybe_escaped_expansion (char *str, int implicit_code, int do_escape_html),
 327   *full_expansion (char *str, int implicit_code);
 328
 329 extern void free_and_clear (char **pointer),
 330   add_word (char *string),
 331   add_char (int character),
 332   add_meta_char (int character),
 333   close_single_paragraph (void),
 334   insert_string (const char *),
 335   insert (int character),
 336   get_rest_of_line (int expand, char **string),
 337   add_html_block_elt (char *string),
 338   get_until_in_braces (char *match, char **string),
 339   get_until_in_line (int expand, char *match, char **string),
 340   canon_white (char *string),
 341   discard_until (char *string),
 342   indent (int amount),
 343   kill_self_indent (int count),
 344   backup_input_pointer (void),
 345   inhibit_output_flushing (void),
 346   uninhibit_output_flushing (void),
 347   flush_output (void),
 348   start_paragraph (void),
 349   close_paragraph (void),
 350   close_insertion_paragraph (void),
 351   init_paragraph (void),
 352   ignore_blank_line (void),
 353   reader_loop (void),
 354   discard_braces (void),
 355   replace_with_expansion (int from, int *to),
 356   fix_whitespace (char *string),
 357   add_html_elt (char *string);
 358
 359 extern int get_until (char *match, char **string),
 360   set_paragraph_indent (char *string),
 361   self_delimiting (int character),
 362   search_forward (char *string, int from),
 363   search_forward_until_pos (char *string, int from, int end_pos),
 364   next_nonwhitespace_character (void),
 365   fs_error (char *filename);
 366
 367 #if defined (VA_FPRINTF) && __STDC__
 368 /* Unfortunately we must use prototypes if we are to use <stdarg.h>.  */
 369 extern void add_word_args (const char *, ...),
 370   add_html_block_elt_args (const char *, ...),
 371   execute_string (char *, ...),
 372   warning (const char *format, ...),
 373   error (const char *format, ...),
 374   line_error (const char *format, ...),
 375   file_line_error (char *infile, int lno, const char *format, ...);
 376 #else
 377 extern void add_word_args (),
 378   add_html_block_elt_args (),
 379   execute_string (),
 380   warning (),
 381   error (),
 382   line_error (),
 383   file_line_error ();
 384 #endif /* no prototypes */
 385
 386 #endif /* not MAKEINFO_H */