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freebsd/contrib/texinfo/makeinfo/makeinfo.h
2002-03-25 13:08:32 +00:00

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/* makeinfo.h -- declarations for Makeinfo.
$Id: makeinfo.h,v 1.31 2001/09/11 16:37:51 karl Exp $
Copyright (C) 1996, 97, 98, 99, 2000, 01 Free Software Foundation, Inc.
This program 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, or (at your option)
any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Written by Brian Fox (bfox@ai.mit.edu). */
#ifndef MAKEINFO_H
#define MAKEINFO_H
#ifdef COMPILING_MAKEINFO
# define DECLARE(type,var,init) type var = init
#else
# define DECLARE(type,var,init) extern type var
#endif
/* Hardcoded per GNU standards, not dependent on argv[0]. */
DECLARE (char *, progname, "makeinfo");
enum reftype
{
menu_reference, followed_reference
};
extern char *get_xref_token ();
/* Nonzero means a string is in execution, as opposed to a file. */
DECLARE (int, executing_string, 0);
/* Nonzero means to inhibit writing macro expansions to the output
stream, because it has already been written. */
DECLARE (int, me_inhibit_expansion, 0);
extern char *expansion (), *text_expansion ();
/* Current output stream. */
DECLARE (FILE *, output_stream, NULL);
DECLARE (char *, pretty_output_filename, NULL);
/* Current output file name. */
DECLARE (char *, current_output_filename, NULL);
/* Output paragraph buffer. */
DECLARE (unsigned char *, output_paragraph, NULL);
/* Offset into OUTPUT_PARAGRAPH. */
DECLARE (int, output_paragraph_offset, 0);
/* The output paragraph "cursor" horizontal position. */
DECLARE (int, output_column, 0);
/* Position in the output file. */
DECLARE (int, output_position, 0);
/* The offset into OUTPUT_PARAGRAPH where we have a meta character
produced by a markup such as @code or @dfn. */
DECLARE (int, meta_char_pos, -1);
/* Nonzero means output_paragraph contains text. */
DECLARE (int, paragraph_is_open, 0);
/* Nonzero means that `start_paragraph' MUST be called before we pay
any attention to `close_paragraph' calls. */
DECLARE (int, must_start_paragraph, 0);
/* Nonzero means that we have seen "@top" once already. */
DECLARE (int, top_node_seen, 0);
/* Nonzero means that we have seen a non-"@top" node already. */
DECLARE (int, non_top_node_seen, 0);
/* Nonzero indicates that indentation is temporarily turned off. */
DECLARE (int, no_indent, 1);
/* Nonzero indicates that filling a line also indents the new line. */
DECLARE (int, indented_fill, 0);
/* Nonzero means forcing output text to be flushright. */
DECLARE (int, force_flush_right, 0);
/* The amount of indentation to apply at the start of each line. */
DECLARE (int, current_indent, 0);
/* The column at which long lines are broken. */
DECLARE (int, fill_column, 72);
/* Nonzero means that words are not to be split, even in long lines. This
gets changed for cm_w (). */
DECLARE (int, non_splitting_words, 0);
/* Amount by which @example indentation increases/decreases. */
DECLARE (int, default_indentation_increment, 5);
/* Nonzero means that we are currently hacking the insides of an
insertion which would use a fixed width font. */
DECLARE (int, in_fixed_width_font, 0);
/* Nonzero if we are currently processing a multitable command */
DECLARE (int, multitable_active, 0);
/* Nonzero means that we're generating HTML. */
DECLARE (int, html, 0);
/* Nonzero means that we're generating XML. */
DECLARE (int, xml, 0);
/* Nonzero means that we're generating DocBook. */
DECLARE (int, docbook, 0);
/* Nonzero means true 8-bit output for Info and plain text. */
DECLARE (int, enable_encoding, 0);
/* Nonzero means escape characters in HTML output. */
DECLARE (int, escape_html, 1);
extern char *escape_string (); /* do HTML escapes */
/* Nonzero means that the use of paragraph_start_indent is inhibited.
@example uses this to line up the left columns of the example text.
A negative value for this variable is incremented each time it is used.
@noindent uses this to inhibit indentation for a single paragraph. */
DECLARE (int, inhibit_paragraph_indentation, 0);
/* Nonzero indicates that filling will take place on long lines. */
DECLARE (int, filling_enabled, 1);
/* The current node's node name. */
DECLARE (char *, current_node, NULL);
/* Command name in the process of being hacked. */
DECLARE (char *, command, NULL);
/* @documentdescription ... @end documentdescription. */
DECLARE (char *, document_description, NULL);
/* Nonzero if the last character inserted has the syntax class of NEWLINE. */
DECLARE (int, last_char_was_newline, 1);
/* The current input file state. */
DECLARE (char *, input_filename, (char *)NULL);
DECLARE (char *, input_text, (char *)NULL);
DECLARE (int, input_text_length, 0);
DECLARE (int, input_text_offset, 0);
DECLARE (int, line_number, 0);
DECLARE (char *, toplevel_output_filename, NULL);
#define curchar() input_text[input_text_offset]
/* A colon separated list of directories to search for files included
with @include. This can be controlled with the `-I' option to makeinfo. */
DECLARE (char *, include_files_path, NULL);
/* The filename of the current input file. This is never freed. */
DECLARE (char *, node_filename, NULL);
/* Nonzero means do not output "Node: Foo" for node separations, that
is, generate plain text. (--no-headers) */
DECLARE (int, no_headers, 0);
/* Nonzero means that we process @html and @rawhtml even when not
generating HTML. (--ifhtml) */
DECLARE (int, process_html, 0);
/* Nonzero means that we process @ifinfo even when generating HTML.
(--ifinfo) */
DECLARE (int, process_info, 1);
/* Nonzero means that we process @tex and @iftex. (--iftex) */
DECLARE (int, process_tex, 0);
/* Maximum number of references to a single node before complaining.
(--reference-limit) */
DECLARE (int, reference_warning_limit, 1000);
/* Default is to check node references. (--no-validate) */
DECLARE (int, validating, 1);
/* Nonzero means print information about what is going on. (--verbose) */
DECLARE (int, verbose_mode, 0);
/* Nonzero means prefix each @chapter, ... with a number like 1. (--number-sections) */
DECLARE (int, number_sections, 0);
/* Nonzero means split size. When zero, DEFAULT_SPLIT_SIZE is used. */
DECLARE (int, split_size, 0);
/* Nonzero means expand node names and references while validating.
This will avoid errors when the Texinfo document uses features
like @@ and @value inconsistently in node names, but will slow
the program by about 80%. You HAVE been warned. */
DECLARE (int, expensive_validation, 0);
/* C's standard macros don't check to make sure that the characters being
changed are within range. So I have to check explicitly. */
#define coerce_to_upper(c) ((islower(c) ? toupper(c) : (c)))
#define coerce_to_lower(c) ((isupper(c) ? tolower(c) : (c)))
#define control_character_bit 0x40 /* %01000000, must be off. */
#define meta_character_bit 0x080/* %10000000, must be on. */
#define CTL(c) ((c) & (~control_character_bit))
#define UNCTL(c) coerce_to_upper(((c)|control_character_bit))
#define META(c) ((c) | (meta_character_bit))
#define UNMETA(c) ((c) & (~meta_character_bit))
#define whitespace(c) ((c) == '\t' || (c) == ' ')
#define sentence_ender(c) ((c) == '.' || (c) == '?' || (c) == '!')
#define cr_or_whitespace(c) (whitespace(c) || (c) == '\r' || (c) == '\n')
#ifndef isletter
#define isletter(c) (((c) >= 'A' && (c) <= 'Z') || ((c) >= 'a' && (c) <= 'z'))
#endif
#ifndef isupper
#define isupper(c) ((c) >= 'A' && (c) <= 'Z')
#endif
#ifndef isdigit
#define isdigit(c) ((c) >= '0' && (c) <= '9')
#endif
#ifndef digit_value
#define digit_value(c) ((c) - '0')
#endif
#define HTML_SAFE "$-_.+!*'()"
#define URL_SAFE_CHAR(ch) (isalnum (ch) || strchr (HTML_SAFE, ch))
#define COMMAND_PREFIX '@'
#define END_VERBATIM "end verbatim"
/* Stuff for splitting large files. */
#define SPLIT_SIZE_THRESHOLD 70000 /* What's good enough for Stallman... */
#define DEFAULT_SPLIT_SIZE 50000 /* Is probably good enough for me. */
DECLARE (int, splitting, 1); /* Defaults to true for now. */
#define command_char(c) (!cr_or_whitespace(c) \
&& (c) != '{' \
&& (c) != '}' \
&& (c) != '=')
#define skip_whitespace() \
while ((input_text_offset != input_text_length) && \
whitespace (curchar())) \
input_text_offset++
#define skip_whitespace_and_newlines() \
do { \
while (input_text_offset != input_text_length \
&& cr_or_whitespace (curchar ())) \
{ \
if (curchar () == '\n') \
line_number++; \
input_text_offset++; \
} \
} while (0)
/* Return nonzero if STRING is the text at input_text + input_text_offset,
else zero. */
#define looking_at(string) \
(strncmp (input_text + input_text_offset, string, strlen (string)) == 0)
#endif /* not MAKEINFO_H */