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freebsd/contrib/texinfo/makeinfo/makeinfo.c
Ruslan Ermilov 980e0006ad This is the stock GNU texinfo 4.0 file
2000-01-17 10:45:43 +00:00

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/* makeinfo -- convert Texinfo source into other formats.
$Id: makeinfo.c,v 1.171 1999/09/19 15:24:44 karl Exp $
Copyright (C) 1987, 92, 93, 94, 95, 96, 97, 98, 99
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.
Makeinfo was authored by Brian Fox (bfox@ai.mit.edu). */
#include "system.h"
#include "getopt.h"
#define COMPILING_MAKEINFO
#include "makeinfo.h"
#include "cmds.h"
#include "files.h"
#include "footnote.h"
#include "html.h"
#include "index.h"
#include "insertion.h"
#include "macro.h"
#include "node.h"
#include "toc.h"
/* We'd like to take advantage of _doprnt if it's around, a la error.c,
but then we'd have no VA_SPRINTF. */
#if HAVE_VPRINTF
# if __STDC__
# include <stdarg.h>
# define VA_START(args, lastarg) va_start(args, lastarg)
# else
# include <varargs.h>
# define VA_START(args, lastarg) va_start(args)
# endif
# define VA_FPRINTF(file, fmt, ap) vfprintf (file, fmt, ap)
# define VA_SPRINTF(str, fmt, ap) vsprintf (str, fmt, ap)
#else /* not HAVE_VPRINTF */
# define VA_START(args, lastarg)
# define va_alist a1, a2, a3, a4, a5, a6, a7, a8
# define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8;
# define va_end(args)
#endif
/* DJGPP supports /dev/null, which is okay for Unix aficionados,
shell scripts and Makefiles, but interactive DOS die-hards
would probably want to have NUL as well. */
#ifdef __DJGPP__
# define ALSO_NULL_DEVICE "NUL"
#else
# define ALSO_NULL_DEVICE ""
#endif
/* You can change some of the behavior of Makeinfo by changing the
following defines: */
/* Define INDENT_PARAGRAPHS_IN_TABLE if you want the paragraphs which
appear within an @table, @ftable, or @itemize environment to have
standard paragraph indentation. Without this, such paragraphs have
no starting indentation. */
/* #define INDENT_PARAGRAPHS_IN_TABLE */
/* Define PARAGRAPH_START_INDENT to be the amount of indentation that
the first lines of paragraphs receive by default, where no other
value has been specified. Users can change this value on the command
line, with the --paragraph-indent option, or within the texinfo file,
with the @paragraphindent command. */
#define PARAGRAPH_START_INDENT 3
/* Define DEFAULT_PARAGRAPH_SPACING as the number of blank lines that you
wish to appear between paragraphs. A value of 1 creates a single blank
line between paragraphs. Paragraphs are defined by 2 or more consecutive
newlines in the input file (i.e., one or more blank lines). */
#define DEFAULT_PARAGRAPH_SPACING 1
/* Global variables. */
/* The output file name. */
char *output_filename = NULL;
/* Name of the output file that the user elected to pass on the command line.
Such a name overrides any name found with the @setfilename command. */
char *command_output_filename = NULL;
/* Flags which control initial output string for xrefs. */
int px_ref_flag = 0;
int ref_flag = 0;
#define INITIAL_PARAGRAPH_SPACE 5000
int paragraph_buffer_len = INITIAL_PARAGRAPH_SPACE;
/* The amount of indentation to add at the starts of paragraphs.
0 means don't change existing indentation at paragraph starts.
> 0 is amount to indent new paragraphs by.
< 0 means indent to column zero by removing indentation if necessary.
This is normally zero, but some people prefer paragraph starts to be
somewhat more indented than paragraph bodies. A pretty value for
this is 3. */
int paragraph_start_indent = PARAGRAPH_START_INDENT;
/* Indentation that is pending insertion. We have this for hacking lines
which look blank, but contain whitespace. We want to treat those as
blank lines. */
int pending_indent = 0;
/* The index in our internal command table of the currently
executing command. */
int command_index;
/* A search string which is used to find the first @setfilename. */
char setfilename_search[] =
{ COMMAND_PREFIX,
's', 'e', 't', 'f', 'i', 'l', 'e', 'n', 'a', 'm', 'e', 0 };
/* Values for calling handle_variable_internal (). */
#define SET 1
#define CLEAR 2
#define IFSET 3
#define IFCLEAR 4
/* Flags controlling the operation of the program. */
/* Default is to remove output if there were errors. */
int force = 0;
/* Default is to notify users of bad choices. */
int print_warnings = 1;
/* Number of errors that we tolerate on a given fileset. */
int max_error_level = 100;
/* The actual last inserted character. Note that this may be something
other than NEWLINE even if last_char_was_newline is 1. */
int last_inserted_character = 0;
/* Nonzero means that a newline character has already been
inserted, so close_paragraph () should insert one less. */
int line_already_broken = 0;
/* When nonzero we have finished an insertion (see end_insertion ()) and we
want to ignore false continued paragraph closings. */
int insertion_paragraph_closed = 0;
/* Nonzero means attempt to make all of the lines have fill_column width. */
int do_justification = 0;
typedef struct brace_element
{
struct brace_element *next;
COMMAND_FUNCTION *proc;
char *command;
int pos, line;
int in_fixed_width_font;
} BRACE_ELEMENT;
BRACE_ELEMENT *brace_stack = NULL;
extern void do_multitable (), end_multitable ();
void push_node_filename (), pop_node_filename ();
void remember_error ();
void convert_from_stream (), convert_from_file (), convert_from_loaded_file ();
void init_internals (), init_paragraph (), init_brace_stack ();
void init_insertion_stack (), init_indices ();
void init_tag_table (), write_tag_table (), write_tag_table_internal ();
void validate_file (), validate_other_references (), split_file ();
void free_node_references (), handle_variable ();
void handle_variable_internal ();
void normalize_node_name ();
void add_anchor_name ();
void free_node_node_references (), remember_node_node_reference ();
char **get_brace_args ();
int array_len ();
void free_array ();
static int end_of_sentence_p ();
static void isolate_nodename ();
void reader_loop ();
void remember_brace (), remember_brace_1 ();
void pop_and_call_brace (), discard_braces ();
void add_word (), add_char (), insert (), flush_output ();
void insert_string ();
void close_paragraph ();
void ignore_blank_line ();
void do_flush_right_indentation (), discard_insertions ();
void start_paragraph (), indent ();
void inhibit_output_flushing (), uninhibit_output_flushing ();
int set_paragraph_indent ();
int self_delimiting (), search_forward ();
int multitable_item (), number_of_node ();
extern void add_link (), add_escaped_anchor_name ();
void me_execute_string_keep_state ();
void maybe_update_execution_strings ();
extern char *escape_string ();
extern void insert_html_tag ();
extern void sectioning_html ();
extern void add_link ();
#if defined (VA_FPRINTF) && __STDC__
/* Unfortunately we must use prototypes if we are to use <stdarg.h>. */
void add_word_args (char *, ...);
void execute_string (char *, ...);
#else
void add_word_args ();
void execute_string ();
#endif /* no prototypes */
/* Error handling. */
/* Number of errors encountered. */
int errors_printed = 0;
/* Print the last error gotten from the file system. */
int
fs_error (filename)
char *filename;
{
remember_error ();
perror (filename);
return 0;
}
/* Print an error message, and return false. */
void
#if defined (VA_FPRINTF) && __STDC__
error (char *format, ...)
#else
error (format, va_alist)
char *format;
va_dcl
#endif
{
#ifdef VA_FPRINTF
va_list ap;
#endif
remember_error ();
VA_START (ap, format);
#ifdef VA_FPRINTF
VA_FPRINTF (stderr, format, ap);
#else
fprintf (stderr, format, a1, a2, a3, a4, a5, a6, a7, a8);
#endif /* not VA_FPRINTF */
va_end (ap);
putc ('\n', stderr);
}
/* Just like error (), but print the line number as well. */
void
#if defined (VA_FPRINTF) && __STDC__
line_error (char *format, ...)
#else
line_error (format, va_alist)
char *format;
va_dcl
#endif
{
#ifdef VA_FPRINTF
va_list ap;
#endif
remember_error ();
fprintf (stderr, "%s:%d: ", input_filename, line_number);
VA_START (ap, format);
#ifdef VA_FPRINTF
VA_FPRINTF (stderr, format, ap);
#else
fprintf (stderr, format, a1, a2, a3, a4, a5, a6, a7, a8);
#endif /* not VA_FPRINTF */
va_end (ap);
fprintf (stderr, ".\n");
}
void
#if defined (VA_FPRINTF) && __STDC__
warning (char *format, ...)
#else
warning (format, va_alist)
char *format;
va_dcl
#endif
{
#ifdef VA_FPRINTF
va_list ap;
#endif
if (print_warnings)
{
fprintf (stderr, _("%s:%d: warning: "), input_filename, line_number);
VA_START (ap, format);
#ifdef VA_FPRINTF
VA_FPRINTF (stderr, format, ap);
#else
fprintf (stderr, format, a1, a2, a3, a4, a5, a6, a7, a8);
#endif /* not VA_FPRINTF */
va_end (ap);
fprintf (stderr, ".\n");
}
}
/* Remember that an error has been printed. If more than
max_error_level have been printed, then exit the program. */
void
remember_error ()
{
errors_printed++;
if (max_error_level && (errors_printed > max_error_level))
{
fprintf (stderr, _("Too many errors! Gave up.\n"));
flush_file_stack ();
cm_bye ();
xexit (1);
}
}
/* The other side of a malformed expression. */
void
misplaced_brace ()
{
line_error (_("Misplaced %c"), '}');
}
/* Main. */
/* Display the version info of this invocation of Makeinfo. */
static void
print_version_info ()
{
printf ("makeinfo (GNU %s) %s\n", PACKAGE, VERSION);
}
/* If EXIT_VALUE is zero, print the full usage message to stdout.
Otherwise, just say to use --help for more info.
Then exit with EXIT_VALUE. */
static void
usage (exit_value)
int exit_value;
{
if (exit_value != 0)
fprintf (stderr, _("Try `%s --help' for more information.\n"), progname);
else
{
printf (_("Usage: %s [OPTION]... TEXINFO-FILE...\n\
\n\
Translate Texinfo source documentation to various other formats:\n\
Info files suitable for reading online with Emacs or standalone GNU Info\n\
(by default); plain text (with --no-headers); or HTML (with --html).\n\
\n\
Options:\n\
--commands-in-node-names allow @ commands in node names.\n\
-D VAR define a variable, as with @set.\n\
-E, --macro-expand FILE output macro-expanded source to FILE.\n\
--error-limit=NUM quit after NUM errors (default %d).\n\
--fill-column=NUM break Info lines at NUM characters (default %d).\n\
--footnote-style=STYLE output footnotes according to STYLE:\n\
`separate' to place footnotes in their own node,\n\
`end' to place the footnotes at the end of the\n\
node in which they are defined (the default).\n\
--force preserve output even if errors.\n\
--help display this help and exit.\n\
--html output HTML rather than Info format;\n\
-I DIR append DIR to the @include search path.\n\
--ifhtml process @ifhtml and @html text even when not\n\
generating HTML.\n\
--ifinfo process @ifinfo text even when generating HTML.\n\
--iftex process @iftex and @tex text.\n\
implies --no-split.\n"),
progname, max_error_level, fill_column);
printf (_("\
--no-headers suppress Info node separators and Node: lines and\n\
write to standard output without --output.\n\
--no-ifhtml do not process @ifhtml and @html text.\n\
--no-ifinfo do not process @ifinfo text.\n\
--no-iftex do not process @iftex and @tex text.\n\
--no-split suppress splitting of large Info output files or\n\
generation of one HTML file per node.\n\
--no-validate suppress node cross-reference validation.\n\
--no-warn suppress warnings (but not errors).\n\
--number-sections include chapter, section, etc. numbers in output.\n\
-o, --output=FILE output to FILE, ignoring any @setfilename.\n\
-P DIR prepend DIR to the @include search path.\n\
--paragraph-indent=VAL indent Info paragraphs by VAL spaces (default %d).\n\
if VAL is `none', do not indent;\n\
if VAL is `asis', preserve existing indentation.\n\
--reference-limit=NUM warn about at most NUM references (default %d).\n\
-U VAR undefine a variable, as with @clear.\n\
-v, --verbose explain what is being done.\n\
--version display version information and exit.\n\
"),
paragraph_start_indent, reference_warning_limit);
}
puts (_("\n\
The defaults for the @if... conditionals depend on the output format:\n\
if generating HTML, --ifhtml is on and the others are off;\n\
if generating Info or plain text, --ifinfo is on and the others are off.\n\
\n\
Examples:\n\
makeinfo foo.texi write Info to foo's @setfilename\n\
makeinfo --html foo.texi write HTML to foo's @setfilename\n\
makeinfo --no-headers -o - foo.texi write plain text to standard output\n\
makeinfo --number-sections foo.texi write Info with numbered sections\n\
makeinfo --no-split foo.texi write one Info file however big\n\
\n\
Email bug reports to bug-texinfo@gnu.org,\n\
general questions and discussion to help-texinfo@gnu.org."));
xexit (exit_value);
}
struct option long_options[] =
{
{ "commands-in-node-names", 0, &expensive_validation, 1 },
{ "error-limit", 1, 0, 'e' },
{ "fill-column", 1, 0, 'f' },
{ "footnote-style", 1, 0, 's' },
{ "force", 0, &force, 1 },
{ "help", 0, 0, 'h' },
{ "html", 0, 0, 'w' },
{ "ifhtml", 0, &process_html, 1 },
{ "ifinfo", 0, &process_info, 1 },
{ "iftex", 0, &process_tex, 1 },
{ "macro-expand", 1, 0, 'E' },
{ "no-headers", 0, &no_headers, 1 },
{ "no-ifhtml", 0, &process_html, 0 },
{ "no-ifinfo", 0, &process_info, 0 },
{ "no-iftex", 0, &process_tex, 0 },
{ "no-number-footnotes", 0, &number_footnotes, 0 },
{ "no-number-sections", 0, &number_sections, 0 },
{ "no-pointer-validate", 0, &validating, 0 },
{ "no-split", 0, &splitting, 0 },
{ "no-validate", 0, &validating, 0 },
{ "no-warn", 0, &print_warnings, 0 },
{ "number-footnotes", 0, &number_footnotes, 1 },
{ "number-sections", 0, &number_sections, 1 },
{ "output", 1, 0, 'o' },
{ "paragraph-indent", 1, 0, 'p' },
{ "reference-limit", 1, 0, 'r' },
{ "verbose", 0, &verbose_mode, 1 },
{ "version", 0, 0, 'V' },
{NULL, 0, NULL, 0}
};
/* For each file mentioned in the command line, process it, turning
Texinfo commands into wonderfully formatted output text. */
int
main (argc, argv)
int argc;
char **argv;
{
extern int errors_printed;
int c, ind;
int reading_from_stdin = 0;
#ifdef HAVE_SETLOCALE
/* Do not use LC_ALL, because LC_NUMERIC screws up the scanf parsing
of the argument to @multicolumn. */
setlocale (LC_TIME, "");
setlocale (LC_MESSAGES, "");
setlocale (LC_CTYPE, "");
setlocale (LC_COLLATE, "");
#endif
/* Set the text message domain. */
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
/* Parse argument flags from the input line. */
while ((c = getopt_long (argc, argv, "D:e:E:f:hI:o:p:P:r:s:U:vV:w",
long_options, &ind)) != EOF)
{
if (c == 0 && long_options[ind].flag == 0)
c = long_options[ind].val;
switch (c)
{
case 'D':
case 'U':
/* User specified variable to set or clear. */
handle_variable_internal ((c == 'D') ? SET : CLEAR, optarg);
break;
case 'e': /* --error-limit */
if (sscanf (optarg, "%d", &max_error_level) != 1)
{
fprintf (stderr,
_("%s: %s arg must be numeric, not `%s'.\n"),
"--error-limit", progname, optarg);
usage (stderr, 1);
}
break;
case 'E': /* --macro-expand */
if (!macro_expansion_output_stream)
{
macro_expansion_filename = optarg;
macro_expansion_output_stream
= strcmp (optarg, "-") == 0 ? stdout : fopen (optarg, "w");
if (!macro_expansion_output_stream)
error (_("Couldn't open macro expansion output `%s'"), optarg);
}
else
error (_("Cannot specify more than one macro expansion output"));
break;
case 'f': /* --fill-column */
if (sscanf (optarg, "%d", &fill_column) != 1)
{
fprintf (stderr,
_("%s: %s arg must be numeric, not `%s'.\n"),
"--fill-column", progname, optarg);
usage (1);
}
break;
case 'h': /* --help */
usage (0);
break;
case 'I':
/* Append user-specified dir to include file path. */
if (!include_files_path)
include_files_path = xstrdup (".");
include_files_path = (char *)
xrealloc (include_files_path,
2 + strlen (include_files_path) + strlen (optarg));
strcat (include_files_path, PATH_SEP);
strcat (include_files_path, optarg);
break;
case 'o': /* --output */
command_output_filename = xstrdup (optarg);
break;
case 'p': /* --paragraph-indent */
if (set_paragraph_indent (optarg) < 0)
{
fprintf (stderr,
_("%s: --paragraph-indent arg must be numeric/`none'/`asis', not `%s'.\n"),
progname, optarg);
usage (1);
}
break;
case 'P':
/* Prepend user-specified include dir to include path. */
if (!include_files_path)
{
include_files_path = xstrdup (optarg);
include_files_path = xrealloc (include_files_path,
strlen (include_files_path) + 3); /* 3 for ":.\0" */
strcat (strcat (include_files_path, PATH_SEP), ".");
}
else
{
char *tmp = xstrdup (include_files_path);
include_files_path = xrealloc (include_files_path,
strlen (include_files_path) + strlen (optarg) + 2); /* 2 for ":\0" */
strcpy (include_files_path, optarg);
strcat (include_files_path, ":");
strcat (include_files_path, tmp);
free (tmp);
}
break;
case 'r': /* --reference-limit */
if (sscanf (optarg, "%d", &reference_warning_limit) != 1)
{
fprintf (stderr,
_("%s: %s arg must be numeric, not `%s'.\n"),
"--reference-limit", progname, optarg);
usage (1);
}
break;
case 's': /* --footnote-style */
if (set_footnote_style (optarg) < 0)
{
fprintf (stderr,
_("%s: --footnote-style arg must be `separate' or `end', not `%s'.\n"),
progname, optarg);
usage (1);
}
footnote_style_preset = 1;
break;
case 'v':
verbose_mode++;
break;
case 'V': /* --version */
print_version_info ();
puts ("");
printf (_("Copyright (C) %s Free Software Foundation, Inc.\n\
There is NO warranty. You may redistribute this software\n\
under the terms of the GNU General Public License.\n\
For more information about these matters, see the files named COPYING.\n"),
"1999");
exit (0);
break;
case 'w': /* --html */
html = 1;
process_html = 1;
process_info = 0;
splitting = 0; /* too complicated for now */
break;
case '?':
usage (1);
break;
}
}
if (!validating)
expensive_validation = 0;
if (optind == argc)
{
/* Check to see if input is a file. If so, process that. */
if (!isatty (fileno (stdin)))
reading_from_stdin = 1;
else
{
fprintf (stderr, _("%s: missing file argument.\n"), progname);
usage (1);
}
}
if (no_headers)
{
if (html && splitting)
{ /* --no-headers --no-split --html indicates confusion. */
fprintf (stderr,
"%s: --no-headers conflicts with --no-split for --html.\n",
progname);
usage (1);
}
/* --no-headers implies --no-split. */
splitting = 0;
/* If the user did not specify an output file, use stdout. */
if (!command_output_filename)
command_output_filename = xstrdup ("-");
}
if (verbose_mode)
print_version_info ();
/* Remaining arguments are file names of texinfo files.
Convert them, one by one. */
if (!reading_from_stdin)
{
while (optind != argc)
convert_from_file (argv[optind++]);
}
else
convert_from_stream (stdin, "stdin");
return errors_printed ? 2 : 0;
}
/* Hacking tokens and strings. */
/* Return the next token as a string pointer. We cons the string. */
char *
read_token ()
{
int i, character;
char *result;
/* If the first character to be read is self-delimiting, then that
is the command itself. */
character = curchar ();
if (self_delimiting (character))
{
input_text_offset++;
if (character == '\n')
line_number++;
result = xstrdup (" ");
*result = character;
return result;
}
for (i = 0; ((input_text_offset != input_text_length)
&& (character = curchar ())
&& command_char (character));
i++, input_text_offset++);
result = xmalloc (i + 1);
memcpy (result, &input_text[input_text_offset - i], i);
result[i] = 0;
return result;
}
/* Return nonzero if CHARACTER is self-delimiting. */
int
self_delimiting (character)
int character;
{
/* @; and @\ are not Texinfo commands, but they are listed here
anyway. I don't know why. --karl, 10aug96. */
return strchr ("~{|}`^\\@?=;:.-,*\'\" !\n\t", character) != NULL;
}
/* Clear whitespace from the front and end of string. */
void
canon_white (string)
char *string;
{
int len = strlen (string);
int x;
if (!len)
return;
for (x = 0; x < len; x++)
{
if (!cr_or_whitespace (string[x]))
{
strcpy (string, string + x);
break;
}
}
len = strlen (string);
if (len)
len--;
while (len > -1 && cr_or_whitespace (string[len]))
len--;
string[len + 1] = 0;
}
/* Bash STRING, replacing all whitespace with just one space. */
void
fix_whitespace (string)
char *string;
{
char *temp = xmalloc (strlen (string) + 1);
int string_index = 0;
int temp_index = 0;
int c;
canon_white (string);
while (string[string_index])
{
c = temp[temp_index++] = string[string_index++];
if (c == ' ' || c == '\n' || c == '\t')
{
temp[temp_index - 1] = ' ';
while ((c = string[string_index]) && (c == ' ' ||
c == '\t' ||
c == '\n'))
string_index++;
}
}
temp[temp_index] = 0;
strcpy (string, temp);
free (temp);
}
/* Discard text until the desired string is found. The string is
included in the discarded text. */
void
discard_until (string)
char *string;
{
int temp = search_forward (string, input_text_offset);
int tt = (temp < 0) ? input_text_length : temp + strlen (string);
int from = input_text_offset;
/* Find out what line we are on. */
while (from != tt)
if (input_text[from++] == '\n')
line_number++;
if (temp < 0)
{
input_text_offset = input_text_length - strlen (string);
if (strcmp (string, "\n") != 0)
{
line_error (_("Expected `%s'"), string);
return;
}
}
else
input_text_offset = temp;
input_text_offset += strlen (string);
}
/* Read characters from the file until we are at MATCH.
Place the characters read into STRING.
On exit input_text_offset is after the match string.
Return the offset where the string starts. */
int
get_until (match, string)
char *match, **string;
{
int len, current_point, x, new_point, tem;
current_point = x = input_text_offset;
new_point = search_forward (match, input_text_offset);
if (new_point < 0)
new_point = input_text_length;
len = new_point - current_point;
/* Keep track of which line number we are at. */
tem = new_point + (strlen (match) - 1);
while (x != tem)
if (input_text[x++] == '\n')
line_number++;
*string = xmalloc (len + 1);
memcpy (*string, &input_text[current_point], len);
(*string)[len] = 0;
/* Now leave input_text_offset in a consistent state. */
input_text_offset = tem;
if (input_text_offset > input_text_length)
input_text_offset = input_text_length;
return new_point;
}
/* Replace input_text[FROM .. TO] with its expansion. */
void
replace_with_expansion (from, to)
int from, *to;
{
char *xp;
unsigned xp_len, new_len;
char *old_input = input_text;
unsigned raw_len = *to - from;
char *str;
/* The rest of the code here moves large buffers, so let's
not waste time if the input cannot possibly expand
into anything. Unfortunately, we cannot avoid expansion
when we see things like @code etc., even if they only
asked for expansion of macros, since any Texinfo command
can be potentially redefined with a macro. */
if (only_macro_expansion &&
memchr (input_text + from, COMMAND_PREFIX, raw_len) == 0)
return;
/* Get original string from input. */
str = xmalloc (raw_len + 1);
memcpy (str, input_text + from, raw_len);
str[raw_len] = 0;
/* We are going to relocate input_text, so we had better output
pending portion of input_text now, before the pointer changes. */
if (macro_expansion_output_stream && !executing_string
&& !me_inhibit_expansion)
append_to_expansion_output (from);
/* Expand it. */
xp = expansion (str, 0);
xp_len = strlen (xp);
free (str);
/* Plunk the expansion into the middle of `input_text' --
which is terminated by a newline, not a null. Avoid
expensive move of the rest of the input if the expansion
has the same length as the original string. */
if (xp_len != raw_len)
{
new_len = from + xp_len + input_text_length - *to + 1;
if (executing_string)
{ /* If we are in execute_string, we might need to update
the relevant element in the execution_strings[] array,
since it could have to be relocated from under our
feet. (input_text is reallocated here as well, if needed.) */
maybe_update_execution_strings (&input_text, new_len);
}
else if (new_len > input_text_length + 1)
/* Don't bother to realloc if we have enough space. */
input_text = xrealloc (input_text, new_len);
memmove (input_text + from + xp_len,
input_text + *to, input_text_length - *to + 1);
*to += xp_len - raw_len;
/* Since we change input_text_length here, the comparison above
isn't really valid, but it seems the worst that might happen is
an extra xrealloc or two, so let's not worry. */
input_text_length += xp_len - raw_len;
}
memcpy (input_text + from, xp, xp_len);
free (xp);
/* Synchronize the macro-expansion pointers with our new input_text. */
if (input_text != old_input)
forget_itext (old_input);
if (macro_expansion_output_stream && !executing_string)
remember_itext (input_text, from);
}
/* Read characters from the file until we are at MATCH or end of line.
Place the characters read into STRING. If EXPAND is nonzero,
expand the text before looking for MATCH for those cases where
MATCH might be produced by some macro. */
void
get_until_in_line (expand, match, string)
int expand;
char *match, **string;
{
int real_bottom = input_text_length;
int limit = search_forward ("\n", input_text_offset);
if (limit < 0)
limit = input_text_length;
/* Replace input_text[input_text_offset .. limit-1] with its expansion.
This allows the node names and menu entries themselves to be
constructed via a macro, as in:
@macro foo{p, q}
Together: \p\ & \q\.
@end macro
@node @foo{A,B}, next, prev, top
Otherwise, the `,' separating the macro args A and B is taken as
the node argument separator, so the node name is `@foo{A'. This
expansion is only necessary on the first call, since we expand the
whole line then. */
if (expand)
{
replace_with_expansion (input_text_offset, &limit);
}
real_bottom = input_text_length;
input_text_length = limit;
get_until (match, string);
input_text_length = real_bottom;
}
void
get_rest_of_line (expand, string)
int expand;
char **string;
{
if (expand)
{
char *tem;
/* Don't expand non-macros in input, since we want them
intact in the macro-expanded output. */
only_macro_expansion++;
get_until_in_line (1, "\n", &tem);
only_macro_expansion--;
*string = expansion (tem, 0);
free (tem);
}
else
get_until_in_line (0, "\n", string);
canon_white (*string);
if (curchar () == '\n') /* as opposed to the end of the file... */
{
line_number++;
input_text_offset++;
}
}
/* Backup the input pointer to the previous character, keeping track
of the current line number. */
void
backup_input_pointer ()
{
if (input_text_offset)
{
input_text_offset--;
if (curchar () == '\n')
line_number--;
}
}
/* Read characters from the file until we are at MATCH or closing brace.
Place the characters read into STRING. */
void
get_until_in_braces (match, string)
char *match, **string;
{
char *temp;
int i, brace = 0;
int match_len = strlen (match);
for (i = input_text_offset; i < input_text_length; i++)
{
if (input_text[i] == '{')
brace++;
else if (input_text[i] == '}')
brace--;
else if (input_text[i] == '\n')
line_number++;
if (brace < 0 ||
(brace == 0 && strncmp (input_text + i, match, match_len) == 0))
break;
}
match_len = i - input_text_offset;
temp = xmalloc (2 + match_len);
memcpy (temp, input_text + input_text_offset, match_len);
temp[match_len] = 0;
input_text_offset = i;
*string = temp;
}
/* Converting a file. */
/* Convert the file named by NAME. The output is saved on the file
named as the argument to the @setfilename command. */
static char *suffixes[] = {
/* ".txi" is checked first so that on 8+3 DOS filesystems, if they
have "texinfo.txi" and "texinfo.tex" in the same directory, the
former is used rather than the latter, due to file name truncation. */
".txi",
".texinfo",
".texi",
".txinfo",
"",
NULL
};
void
initialize_conversion ()
{
init_tag_table ();
init_indices ();
init_internals ();
init_paragraph ();
/* This is used for splitting the output file and for doing section
headings. It was previously initialized in `init_paragraph', but its
use there loses with the `init_paragraph' calls done by the
multitable code; the tag indices get reset to zero. */
output_position = 0;
}
typedef struct generic_list {
struct generic_list *next;
} GENERIC_LIST;
/* Reverse the chain of structures in LIST. Output the new head
of the chain. You should always assign the output value of this
function to something, or you will lose the chain. */
GENERIC_LIST *
reverse_list (list)
GENERIC_LIST *list;
{
GENERIC_LIST *next;
GENERIC_LIST *prev = NULL;
while (list)
{
next = list->next;
list->next = prev;
prev = list;
list = next;
}
return prev;
}
/* We read in multiples of 4k, simply because it is a typical pipe size
on unix systems. */
#define READ_BUFFER_GROWTH (4 * 4096)
/* Convert the Texinfo file coming from the open stream STREAM. Assume the
source of the stream is named NAME. */
void
convert_from_stream (stream, name)
FILE *stream;
char *name;
{
char *buffer = NULL;
int buffer_offset = 0, buffer_size = 0;
initialize_conversion ();
/* Read until the end of the stream. This isn't strictly correct, since
the texinfo input may end before the stream ends, but it is a quick
working hueristic. */
while (!feof (stream))
{
int count;
if (buffer_offset + (READ_BUFFER_GROWTH + 1) >= buffer_size)
buffer = (char *)
xrealloc (buffer, (buffer_size += READ_BUFFER_GROWTH));
count = fread (buffer + buffer_offset, 1, READ_BUFFER_GROWTH, stream);
if (count < 0)
{
perror (name);
xexit (1);
}
buffer_offset += count;
if (count == 0)
break;
}
/* Set the globals to the new file. */
input_text = buffer;
input_text_length = buffer_offset;
input_filename = xstrdup (name);
node_filename = xstrdup (name);
input_text_offset = 0;
line_number = 1;
/* Not strictly necessary. This magic prevents read_token () from doing
extra unnecessary work each time it is called (that is a lot of times).
The INPUT_TEXT_LENGTH is one past the actual end of the text. */
input_text[input_text_length] = '\n';
convert_from_loaded_file (name);
}
void
convert_from_file (name)
char *name;
{
int i;
char *filename = xmalloc (strlen (name) + 50);
initialize_conversion ();
/* Try to load the file specified by NAME, concatenated with our
various suffixes. Prefer files like `makeinfo.texi' to
`makeinfo'. */
for (i = 0; suffixes[i]; i++)
{
strcpy (filename, name);
strcat (filename, suffixes[i]);
if (find_and_load (filename))
break;
if (!suffixes[i][0] && strrchr (filename, '.'))
{
fs_error (filename);
free (filename);
return;
}
}
if (!suffixes[i])
{
fs_error (name);
free (filename);
return;
}
input_filename = filename;
convert_from_loaded_file (name);
}
void
convert_from_loaded_file (name)
char *name;
{
char *real_output_filename = NULL;
remember_itext (input_text, 0);
input_text_offset = 0;
/* Avoid the `\input texinfo' line in HTML output (assuming it starts
the file). */
if (looking_at ("\\input"))
discard_until ("\n");
/* Search this file looking for the special string which starts conversion.
Once found, we may truly begin. */
while (input_text_offset >= 0)
{
input_text_offset =
search_forward (setfilename_search, input_text_offset);
if (input_text_offset == 0
|| (input_text_offset > 0
&& input_text[input_text_offset -1] == '\n'))
break;
else if (input_text_offset > 0)
input_text_offset++;
}
if (input_text_offset < 0)
{
if (!command_output_filename)
{
#if defined (REQUIRE_SETFILENAME)
error (_("No `%s' found in `%s'"), setfilename_search, name);
goto finished;
#else
command_output_filename = output_name_from_input_name (name);
#endif /* !REQUIRE_SETFILENAME */
}
{
int i, end_of_first_line;
/* Find the end of the first line in the file. */
for (i = 0; i < input_text_length - 1; i++)
if (input_text[i] == '\n')
break;
end_of_first_line = i + 1;
for (i = 0; i < end_of_first_line; i++)
{
if ((input_text[i] == '\\') &&
(strncmp (input_text + i + 1, "input", 5) == 0))
{
input_text_offset = i;
break;
}
}
}
}
else
input_text_offset += strlen (setfilename_search);
if (!command_output_filename)
{
get_until ("\n", &output_filename); /* read rest of line */
if (html)
{ /* Change any extension to .html. */
char *html_name, *directory_part, *basename_part, *temp;
canon_white (output_filename);
directory_part = pathname_part (output_filename);
basename_part = filename_part (output_filename);
/* Zap any existing extension. */
temp = strrchr (basename_part, '.');
if (temp)
*temp = 0;
/* Construct new filename. */
html_name = xmalloc (strlen (directory_part)
+ strlen (basename_part) + 6);
strcpy (html_name, directory_part);
strcat (html_name, basename_part);
strcat (html_name, ".html");
/* Replace name from @setfilename with the html name. */
free (output_filename);
output_filename = html_name;
}
}
else
{
if (input_text_offset != -1)
discard_until ("\n");
else
input_text_offset = 0;
real_output_filename = output_filename = command_output_filename;
command_output_filename = NULL;
}
canon_white (output_filename);
if (real_output_filename && strcmp (real_output_filename, "-") == 0)
{
if (macro_expansion_filename
&& strcmp (macro_expansion_filename, "-") == 0)
{
fprintf (stderr, _("%s: Skipping macro expansion to stdout as Info output is going there.\n"),
progname);
macro_expansion_output_stream = NULL;
}
real_output_filename = xstrdup (real_output_filename);
output_stream = stdout;
splitting = 0; /* Cannot split when writing to stdout. */
}
else
{
if (!real_output_filename)
real_output_filename = expand_filename (output_filename, name);
else
real_output_filename = xstrdup (real_output_filename);
output_stream = fopen (real_output_filename, "w");
}
set_current_output_filename (real_output_filename);
if (verbose_mode)
printf (_("Making %s file `%s' from `%s'.\n"),
no_headers ? "text" : (html ? "HTML" : "info"),
output_filename, input_filename);
if (output_stream == NULL)
{
fs_error (real_output_filename);
goto finished;
}
/* Make the displayable filename from output_filename. Only the base
portion of the filename need be displayed. */
if (output_stream != stdout)
pretty_output_filename = filename_part (output_filename);
else
pretty_output_filename = xstrdup ("stdout");
/* For this file only, count the number of newlines from the top of
the file to here. This way, we keep track of line numbers for
error reporting. Line_number starts at 1, since the user isn't
zero-based. */
{
int temp = 0;
line_number = 1;
while (temp != input_text_offset)
if (input_text[temp++] == '\n')
line_number++;
}
/* html fixxme: should output this as trailer on first page. */
if (!no_headers && !html)
add_word_args (_("This is %s, produced by makeinfo version %s from %s.\n"),
output_filename, VERSION, input_filename);
close_paragraph ();
reader_loop ();
finished:
discard_insertions (0);
close_paragraph ();
flush_file_stack ();
if (macro_expansion_output_stream)
{
fclose (macro_expansion_output_stream);
if (errors_printed && !force
&& strcmp (macro_expansion_filename, "-") != 0
&& FILENAME_CMP (macro_expansion_filename, NULL_DEVICE) != 0
&& FILENAME_CMP (macro_expansion_filename, ALSO_NULL_DEVICE) != 0)
{
fprintf (stderr, _("%s: Removing macro output file `%s' due to errors; use --force to preserve.\n"),
progname, macro_expansion_filename);
if (unlink (macro_expansion_filename) < 0)
perror (macro_expansion_filename);
}
}
if (output_stream)
{
output_pending_notes ();
if (tag_table)
{
tag_table = (TAG_ENTRY *) reverse_list (tag_table);
if (!no_headers && !html)
write_tag_table ();
}
if (html)
{
start_paragraph ();
add_word ("</body></html>\n");
close_paragraph ();
}
if (output_stream != stdout)
fclose (output_stream);
/* If validating, then validate the entire file right now. */
if (validating)
validate_file (tag_table);
/* If we need to output the table of contents, do it now. */
if (contents_filename || shortcontents_filename)
toc_update ();
if (splitting && !html && (!errors_printed || force))
split_file (real_output_filename, 0);
else if (errors_printed
&& !force
&& strcmp (real_output_filename, "-") != 0
&& FILENAME_CMP (real_output_filename, NULL_DEVICE) != 0
&& FILENAME_CMP (real_output_filename, ALSO_NULL_DEVICE) != 0)
{ /* If there were errors, and no --force, remove the output. */
fprintf (stderr, _("%s: Removing output file `%s' due to errors; use --force to preserve.\n"),
progname, real_output_filename);
if (unlink (real_output_filename) < 0)
perror (real_output_filename);
}
}
free (real_output_filename);
}
void
free_and_clear (pointer)
char **pointer;
{
if (*pointer)
{
free (*pointer);
*pointer = NULL;
}
}
/* Initialize some state. */
void
init_internals ()
{
free_and_clear (&output_filename);
free_and_clear (&command);
free_and_clear (&input_filename);
free_node_references ();
free_node_node_references ();
toc_free ();
init_insertion_stack ();
init_brace_stack ();
current_node = NULL; /* sometimes already freed */
command_index = 0;
in_menu = 0;
in_detailmenu = 0;
top_node_seen = 0;
non_top_node_seen = 0;
node_number = -1;
}
void
init_paragraph ()
{
free_and_clear (&output_paragraph);
output_paragraph = xmalloc (paragraph_buffer_len);
output_paragraph[0] = 0;
output_paragraph_offset = 0;
output_column = 0;
paragraph_is_open = 0;
current_indent = 0;
meta_char_pos = 0;
}
/* This is called from `reader_loop' when we are at the * beginning a
menu line. */
static void
handle_menu_entry ()
{
char *tem;
/* Ugh, glean_node_from_menu wants to read the * itself. */
input_text_offset--;
/* Find node name in menu entry and save it in references list for
later validation. Use followed_reference type for detailmenu
references since we don't want to use them for default node pointers. */
tem = glean_node_from_menu (1, in_detailmenu
? followed_reference : menu_reference);
if (html && tem)
{ /* Start a menu item with the cleaned-up line. Put an anchor
around the start text (before `:' or the node name). */
char *string;
discard_until ("* ");
/* The line number was already incremented in reader_loop when we
saw the newline, and discard_until has now incremented again. */
line_number--;
if (had_menu_commentary)
{
add_word ("<ul>\n");
had_menu_commentary = 0;
in_paragraph = 0;
}
else if (!in_paragraph && !paragraph_is_open)
{
add_word ("<p>\n");
in_paragraph = 1;
}
if (in_paragraph)
{
add_word ("</p>");
in_paragraph = 0;
}
add_word ("<li><a href=\"");
string = expansion (tem, 0);
add_anchor_name (string, 1);
add_word ("\">");
free (string);
/* The menu item may use macros, so expand them now. */
only_macro_expansion++;
get_until_in_line (1, ":", &string);
only_macro_expansion--;
execute_string ("%s", string); /* get escaping done */
free (string);
add_word ("</a>");
if (looking_at ("::"))
discard_until (":");
else
{ /* discard the node name */
get_until_in_line (0, ".", &string);
free (string);
}
input_text_offset++; /* discard the second colon or the period */
add_word (": ");
}
else if (tem)
{ /* For Info output, we can just use the input and the main case in
reader_loop where we output what comes in. Just move off the *
so the next time through reader_loop we don't end up back here. */
add_char ('*');
input_text_offset += 2; /* undo the pointer back-up above. */
}
if (tem)
free (tem);
}
/* Find the command corresponding to STRING. If the command is found,
return a pointer to the data structure. Otherwise return -1. */
static COMMAND *
get_command_entry (string)
char *string;
{
int i;
for (i = 0; command_table[i].name; i++)
if (strcmp (command_table[i].name, string) == 0)
return &command_table[i];
/* This command is not in our predefined command table. Perhaps
it is a user defined command. */
for (i = 0; i < user_command_array_len; i++)
if (user_command_array[i] &&
(strcmp (user_command_array[i]->name, string) == 0))
return user_command_array[i];
/* We never heard of this command. */
return (COMMAND *) -1;
}
/* input_text_offset is right at the command prefix character.
Read the next token to determine what to do. Return zero
if there's no known command or macro after the prefix character. */
static int
read_command ()
{
COMMAND *entry;
int old_text_offset = input_text_offset++;
free_and_clear (&command);
command = read_token ();
/* Check to see if this command is a macro. If so, execute it here. */
{
MACRO_DEF *def;
def = find_macro (command);
if (def)
{
/* We disallow recursive use of a macro call. Inhibit the expansion
of this macro during the life of its execution. */
if (!(def->flags & ME_RECURSE))
def->inhibited = 1;
execute_macro (def);
if (!(def->flags & ME_RECURSE))
def->inhibited = 0;
return 1;
}
}
if (only_macro_expansion)
{
/* Back up to the place where we were called, so the
caller will have a chance to process this non-macro. */
input_text_offset = old_text_offset;
return 0;
}
/* Perform alias expansion */
command = alias_expand (command);
if (enclosure_command (command))
{
remember_brace (enclosure_expand);
enclosure_expand (START, output_paragraph_offset, 0);
return 0;
}
entry = get_command_entry (command);
if (entry == (COMMAND *)-1)
{
line_error (_("Unknown command `%s'"), command);
return 0;
}
if (entry->argument_in_braces == BRACE_ARGS)
remember_brace (entry->proc);
else if (entry->argument_in_braces == MAYBE_BRACE_ARGS)
{
if (curchar () == '{')
remember_brace (entry->proc);
else
{ /* No braces, so arg is next char. */
int ch;
int saved_offset = output_paragraph_offset;
(*(entry->proc)) (START, output_paragraph_offset, 0);
/* Possibilities left for the next character: @ (error), }
(error), whitespace (skip) anything else (normal char). */
skip_whitespace ();
ch = curchar ();
if (ch == '@')
{
line_error (_("Use braces to give a command as an argument to @%s"),
entry->name);
return 0;
}
else if (ch == '}')
{
/* Our caller will give the error message, because this }
won't match anything. */
return 0;
}
add_char (ch);
input_text_offset++;
(*(entry->proc)) (END, saved_offset, output_paragraph_offset);
return 1;
}
}
/* Get here if we have BRACE_ARGS, NO_BRACE_ARGS, or MAYBE_BRACE_ARGS
with braces. */
(*(entry->proc)) (START, output_paragraph_offset, 0);
return 1;
}
/* Okay, we are ready to start the conversion. Call the reader on
some text, and fill the text as it is output. Handle commands by
remembering things like open braces and the current file position on a
stack, and when the corresponding close brace is found, you can call
the function with the proper arguments. Although the filling isn't
necessary for HTML, it should do no harm. */
void
reader_loop ()
{
int character;
int done = 0;
int dash_count = 0;
while (!done)
{
if (input_text_offset >= input_text_length)
break;
character = curchar ();
/* If only_macro_expansion, only handle macros and leave
everything else intact. */
if (!only_macro_expansion && !in_fixed_width_font
&& (character == '\'' || character == '`')
&& input_text[input_text_offset + 1] == character)
{
input_text_offset++;
character = '"'; /* html fixxme */
}
/* Convert --- to --. */
if (!only_macro_expansion && character == '-')
{
dash_count++;
if (dash_count == 2 && !in_fixed_width_font)
{
input_text_offset++;
continue;
}
}
else if (dash_count > 0)
dash_count = 0;
/* If this is a whitespace character, then check to see if the line
is blank. If so, advance to the carriage return. */
if (!only_macro_expansion && whitespace (character))
{
int i = input_text_offset + 1;
while (i < input_text_length && whitespace (input_text[i]))
i++;
if (i == input_text_length || input_text[i] == '\n')
{
if (i == input_text_length)
i--;
input_text_offset = i;
character = curchar ();
}
}
if (character == '\n')
line_number++;
switch (character)
{
case '*': /* perhaps we are at a menu */
/* We used to check for this in the \n case but an @c in a
menu swallows its newline, so check here instead. */
if (!only_macro_expansion && in_menu
&& input_text_offset + 1 < input_text_length
&& input_text[input_text_offset-1] == '\n')
handle_menu_entry ();
else
{ /* Duplicate code from below, but not worth twisting the
fallthroughs to get down there. */
add_char (character);
input_text_offset++;
}
break;
/* Escapes for HTML unless we're outputting raw HTML. Do
this always, even if SGML rules don't require it since
that's easier and safer for non-conforming browsers. */
case '&':
if (html && escape_html)
add_word ("&amp;");
else
add_char (character);
input_text_offset++;
break;
case '<':
if (html && escape_html)
add_word ("&lt;");
else
add_char (character);
input_text_offset++;
break;
case '>':
if (html && escape_html)
add_word ("&gt;");
else
add_char (character);
input_text_offset++;
break;
case COMMAND_PREFIX: /* @ */
if (read_command () || !only_macro_expansion)
break;
/* FALLTHROUGH (usually) */
case '{':
/* Special case. We're not supposed to see this character by itself.
If we do, it means there is a syntax error in the input text.
Report the error here, but remember this brace on the stack so
we can ignore its partner. */
if (!only_macro_expansion)
{
line_error (_("Misplaced %c"), '{');
remember_brace (misplaced_brace);
/* remember_brace advances input_text_offset. */
break;
}
/* FALLTHROUGH (usually) */
case '}':
if (!only_macro_expansion)
{
pop_and_call_brace ();
input_text_offset++;
break;
}
/* FALLTHROUGH (usually) */
default:
add_char (character);
input_text_offset++;
}
}
if (macro_expansion_output_stream && !only_macro_expansion)
maybe_write_itext (input_text, input_text_offset);
}
void
init_brace_stack ()
{
brace_stack = NULL;
}
void
remember_brace (proc)
COMMAND_FUNCTION *proc;
{
if (curchar () != '{')
line_error (_("%c%s expected `{...}'"), COMMAND_PREFIX, command);
else
input_text_offset++;
remember_brace_1 (proc, output_paragraph_offset);
}
/* Remember the current output position here. Save PROC
along with it so you can call it later. */
void
remember_brace_1 (proc, position)
COMMAND_FUNCTION *proc;
int position;
{
BRACE_ELEMENT *new = xmalloc (sizeof (BRACE_ELEMENT));
new->next = brace_stack;
new->proc = proc;
new->command = xstrdup (command);
new->pos = position;
new->line = line_number;
new->in_fixed_width_font = in_fixed_width_font;
brace_stack = new;
}
/* Pop the top of the brace stack, and call the associated function
with the args END and POS. */
void
pop_and_call_brace ()
{
if (brace_stack == NULL)
{
line_error (_("Unmatched }"));
return;
}
{
BRACE_ELEMENT *temp;
int pos = brace_stack->pos;
COMMAND_FUNCTION *proc = brace_stack->proc;
in_fixed_width_font = brace_stack->in_fixed_width_font;
/* Reset current command, so the proc can know who it is. This is
used in cm_accent. */
command = brace_stack->command;
temp = brace_stack->next;
free (brace_stack);
brace_stack = temp;
(*proc) (END, pos, output_paragraph_offset);
}
}
/* Shift all of the markers in `brace_stack' by AMOUNT. */
void
adjust_braces_following (here, amount)
int here, amount;
{
BRACE_ELEMENT *stack = brace_stack;
while (stack)
{
if (stack->pos >= here)
stack->pos += amount;
stack = stack->next;
}
}
/* Return the string which invokes PROC; a pointer to a function.
Always returns the first function in the command table if more than
one matches PROC. */
static char *
find_proc_name (proc)
COMMAND_FUNCTION *proc;
{
int i;
for (i = 0; command_table[i].name; i++)
if (proc == command_table[i].proc)
return command_table[i].name;
return _("NO_NAME!");
}
/* You call discard_braces () when you shouldn't have any braces on the stack.
I used to think that this happens for commands that don't take arguments
in braces, but that was wrong because of things like @code{foo @@}. So now
I only detect it at the beginning of nodes. */
void
discard_braces ()
{
if (!brace_stack)
return;
while (brace_stack)
{
if (brace_stack->proc != misplaced_brace)
{
char *proc_name;
int temp_line_number = line_number;
line_number = brace_stack->line;
proc_name = find_proc_name (brace_stack->proc);
line_error (_("%c%s missing close brace"), COMMAND_PREFIX, proc_name);
line_number = temp_line_number;
pop_and_call_brace ();
}
else
{
BRACE_ELEMENT *temp;
temp = brace_stack->next;
free (brace_stack);
brace_stack = temp;
}
}
}
int
get_char_len (character)
int character;
{
/* Return the printed length of the character. */
int len;
switch (character)
{
case '\t':
len = (output_column + 8) & 0xf7;
if (len > fill_column)
len = fill_column - output_column;
else
len = len - output_column;
break;
case '\n':
len = fill_column - output_column;
break;
default:
/* ASCII control characters appear as two characters in the output
(e.g., ^A). But characters with the high bit set are just one
on suitable terminals, so don't count them as two for line
breaking purposes. */
if (0 <= character && character < ' ')
len = 2;
else
len = 1;
}
return len;
}
void
#if defined (VA_FPRINTF) && __STDC__
add_word_args (char *format, ...)
#else
add_word_args (format, va_alist)
char *format;
va_dcl
#endif
{
char buffer[2000]; /* xx no fixed limits */
#ifdef VA_FPRINTF
va_list ap;
#endif
VA_START (ap, format);
#ifdef VA_SPRINTF
VA_SPRINTF (buffer, format, ap);
#else
sprintf (buffer, format, a1, a2, a3, a4, a5, a6, a7, a8);
#endif /* not VA_SPRINTF */
va_end (ap);
add_word (buffer);
}
/* Add STRING to output_paragraph. */
void
add_word (string)
char *string;
{
while (*string)
add_char (*string++);
}
/* Add the character to the current paragraph. If filling_enabled is
nonzero, then do filling as well. */
void
add_char (character)
int character;
{
/* If we are avoiding outputting headers, and we are currently
in a menu, then simply return. But if we're only expanding macros,
then we're being called from glean_node_from_menu to try to
remember a menu reference, and we need that so we can do defaulting. */
if (no_headers && !only_macro_expansion && (in_menu || in_detailmenu))
return;
/* If we are adding a character now, then we don't have to
ignore close_paragraph () calls any more. */
if (must_start_paragraph && character != '\n')
{
must_start_paragraph = 0;
line_already_broken = 0; /* The line is no longer broken. */
if (current_indent > output_column)
{
indent (current_indent - output_column);
output_column = current_indent;
}
}
if (non_splitting_words && strchr (" \t\n", character))
{
if (html)
{ /* Seems cleaner to use &nbsp; than an 8-bit char. */
add_word ("&nbsp");
character = ';';
}
else
character = META (' '); /* unmeta-d in flush_output */
}
insertion_paragraph_closed = 0;
switch (character)
{
case '\n':
if (!filling_enabled && ! (html && (in_menu || in_detailmenu)))
{
insert ('\n');
if (force_flush_right)
{
close_paragraph ();
/* Hack to force single blank lines out in this mode. */
flush_output ();
}
output_column = 0;
if (!no_indent && paragraph_is_open)
indent (output_column = current_indent);
break;
}
else if (end_of_sentence_p ())
/* CHARACTER is newline, and filling is enabled. */
{
insert (' ');
output_column++;
last_inserted_character = character;
}
if (last_char_was_newline)
{
if (html)
last_char_was_newline++;
close_paragraph ();
pending_indent = 0;
}
else
{
last_char_was_newline = 1;
if (html)
insert ('\n');
else
insert (' ');
output_column++;
}
break;
default: /* not at newline */
{
int len = get_char_len (character);
int suppress_insert = 0;
if ((character == ' ') && (last_char_was_newline))
{
if (!paragraph_is_open)
{
pending_indent++;
return;
}
}
if (!paragraph_is_open)
{
start_paragraph ();
/* If the paragraph is supposed to be indented a certain
way, then discard all of the pending whitespace.
Otherwise, we let the whitespace stay. */
if (!paragraph_start_indent)
indent (pending_indent);
pending_indent = 0;
/* This horrible kludge of checking for a < prevents <p>
from being inserted when we already have html markup
starting a paragraph, as with <ul> and <h1> and the like. */
if (html && escape_html && character != '<'
&& (!in_fixed_width_font || in_menu || in_detailmenu))
{
insert_string ("<p>");
in_paragraph = 1;
adjust_braces_following (0, 3); /* adjust for <p> */
}
}
output_column += len;
if (output_column > fill_column)
{
if (filling_enabled && !html)
{
int temp = output_paragraph_offset;
while (--temp > 0 && output_paragraph[temp] != '\n')
{
/* If we have found a space, we have the place to break
the line. */
if (output_paragraph[temp] == ' ')
{
/* Remove trailing whitespace from output. */
while (temp && whitespace (output_paragraph[temp - 1]))
temp--;
/* If we went back all the way to the newline of the
preceding line, it probably means that the word we
are adding is itself wider than the space that the
indentation and the fill_column let us use. In
that case, do NOT insert another newline, since it
won't help. Just indent to current_indent and
leave it alone, since that's the most we can do. */
if (temp && output_paragraph[temp - 1] != '\n')
output_paragraph[temp++] = '\n';
/* We have correctly broken the line where we want
to. What we don't want is spaces following where
we have decided to break the line. We get rid of
them. */
{
int t1 = temp;
for (;; t1++)
{
if (t1 == output_paragraph_offset)
{
if (whitespace (character))
suppress_insert = 1;
break;
}
if (!whitespace (output_paragraph[t1]))
break;
}
if (t1 != temp)
{
adjust_braces_following (temp, (- (t1 - temp)));
strncpy ((char *) &output_paragraph[temp],
(char *) &output_paragraph[t1],
(output_paragraph_offset - t1));
output_paragraph_offset -= (t1 - temp);
}
}
/* Filled, but now indent if that is right. */
if (indented_fill && current_indent > 0)
{
int buffer_len = ((output_paragraph_offset - temp)
+ current_indent);
char *temp_buffer = xmalloc (buffer_len);
int indentation = 0;
/* We have to shift any markers that are in
front of the wrap point. */
adjust_braces_following (temp, current_indent);
while (current_indent > 0 &&
indentation != current_indent)
temp_buffer[indentation++] = ' ';
memcpy ((char *) &temp_buffer[current_indent],
(char *) &output_paragraph[temp],
buffer_len - current_indent);
if (output_paragraph_offset + buffer_len
>= paragraph_buffer_len)
{
unsigned char *tt = xrealloc
(output_paragraph,
(paragraph_buffer_len += buffer_len));
output_paragraph = tt;
}
memcpy ((char *) &output_paragraph[temp],
temp_buffer, buffer_len);
output_paragraph_offset += current_indent;
free (temp_buffer);
}
output_column = 0;
while (temp < output_paragraph_offset)
output_column +=
get_char_len (output_paragraph[temp++]);
output_column += len;
break;
}
}
}
}
if (!suppress_insert)
{
insert (character);
last_inserted_character = character;
}
last_char_was_newline = 0;
line_already_broken = 0;
}
}
}
/* Add a character and store its position in meta_char_pos. */
void
add_meta_char (character)
int character;
{
meta_char_pos = output_paragraph_offset;
add_char (character);
}
/* Insert CHARACTER into `output_paragraph'. */
void
insert (character)
int character;
{
/* This is sad, but it seems desirable to not force any particular
order on the front matter commands. This way, the document can do
@settitle, @documentlanguage, etc, in any order and with any
omissions, and we'll still output the html <head> `just in time'. */
if (!executing_string && html && !html_output_head_p)
html_output_head ();
output_paragraph[output_paragraph_offset++] = character;
if (output_paragraph_offset == paragraph_buffer_len)
{
output_paragraph =
xrealloc (output_paragraph, (paragraph_buffer_len += 100));
}
}
/* Insert the null-terminated string STRING into `output_paragraph'. */
void
insert_string (string)
char *string;
{
while (*string)
insert (*string++);
}
/* Sentences might have these characters after the period (or whatever). */
#define POST_SENTENCE(c) ((c) == ')' || (c) == '\'' || (c) == '"' \
|| (c) == ']')
/* Return true if at an end-of-sentence character, possibly followed by
post-sentence punctuation to ignore. */
static int
end_of_sentence_p ()
{
int loc = output_paragraph_offset - 1;
/* If nothing has been output, don't check output_paragraph[-1]. */
if (loc < 0)
return 0;
/* A post-sentence character that is at meta_char_pos is not really
a post-sentence character; it was produced by a markup such as
@samp. We don't want the period inside @samp to be treated as a
sentence ender. */
while (loc > 0
&& loc != meta_char_pos && POST_SENTENCE (output_paragraph[loc]))
loc--;
return loc != meta_char_pos && sentence_ender (output_paragraph[loc]);
}
/* Remove upto COUNT characters of whitespace from the
the current output line. If COUNT is less than zero,
then remove until none left. */
void
kill_self_indent (count)
int count;
{
/* Handle infinite case first. */
if (count < 0)
{
output_column = 0;
while (output_paragraph_offset)
{
if (whitespace (output_paragraph[output_paragraph_offset - 1]))
output_paragraph_offset--;
else
break;
}
}
else
{
while (output_paragraph_offset && count--)
if (whitespace (output_paragraph[output_paragraph_offset - 1]))
output_paragraph_offset--;
else
break;
}
}
/* Nonzero means do not honor calls to flush_output (). */
static int flushing_ignored = 0;
/* Prevent calls to flush_output () from having any effect. */
void
inhibit_output_flushing ()
{
flushing_ignored++;
}
/* Allow calls to flush_output () to write the paragraph data. */
void
uninhibit_output_flushing ()
{
flushing_ignored--;
}
void
flush_output ()
{
int i;
if (!output_paragraph_offset || flushing_ignored)
return;
for (i = 0; i < output_paragraph_offset; i++)
{
/* If we turned on the 8th bit for a space inside @w, turn it
back off for output. This might be problematic, since the
0x80 character may be used in 8-bit character sets. Sigh.
In any case, don't do this for HTML, since the nbsp character
is valid input and must be passed along to the browser. */
if (!html && (output_paragraph[i] & meta_character_bit))
{
int temp = UNMETA (output_paragraph[i]);
if (temp == ' ')
output_paragraph[i] &= 0x7f;
}
}
fwrite (output_paragraph, 1, output_paragraph_offset, output_stream);
output_position += output_paragraph_offset;
output_paragraph_offset = 0;
meta_char_pos = 0;
}
/* How to close a paragraph controlling the number of lines between
this one and the last one. */
/* Paragraph spacing is controlled by this variable. It is the number of
blank lines that you wish to appear between paragraphs. A value of
1 creates a single blank line between paragraphs. */
int paragraph_spacing = DEFAULT_PARAGRAPH_SPACING;
static void
close_paragraph_with_lines (lines)
int lines;
{
int old_spacing = paragraph_spacing;
paragraph_spacing = lines;
close_paragraph ();
paragraph_spacing = old_spacing;
}
/* Close the current paragraph, leaving no blank lines between them. */
void
close_single_paragraph ()
{
close_paragraph_with_lines (0);
}
/* Close a paragraph after an insertion has ended. */
void
close_insertion_paragraph ()
{
if (!insertion_paragraph_closed)
{
/* Close the current paragraph, breaking the line. */
close_single_paragraph ();
/* Start a new paragraph, with the correct indentation for the now
current insertion level (one above the one that we are ending). */
start_paragraph ();
/* Tell `close_paragraph' that the previous line has already been
broken, so it should insert one less newline. */
line_already_broken = 1;
/* Tell functions such as `add_char' we've already found a newline. */
ignore_blank_line ();
}
else
{
/* If the insertion paragraph is closed already, then we are seeing
two `@end' commands in a row. Note that the first one we saw was
handled in the first part of this if-then-else clause, and at that
time `start_paragraph' was called, partially to handle the proper
indentation of the current line. However, the indentation level
may have just changed again, so we may have to outdent the current
line to the new indentation level. */
if (current_indent < output_column)
kill_self_indent (output_column - current_indent);
}
insertion_paragraph_closed = 1;
}
/* Close the currently open paragraph. */
void
close_paragraph ()
{
int i;
/* The insertion paragraph is no longer closed. */
insertion_paragraph_closed = 0;
if (paragraph_is_open && !must_start_paragraph)
{
int tindex, c;
tindex = output_paragraph_offset;
/* Back up to last non-newline/space character, forcing all such
subsequent characters to be newlines. This isn't strictly
necessary, but a couple of functions use the presence of a newline
to make decisions. */
for (tindex = output_paragraph_offset - 1; tindex >= 0; --tindex)
{
c = output_paragraph[tindex];
if (c == ' '|| c == '\n')
output_paragraph[tindex] = '\n';
else
break;
}
/* All trailing whitespace is ignored. */
output_paragraph_offset = ++tindex;
/* Break the line if that is appropriate. */
if (paragraph_spacing >= 0)
insert ('\n');
/* Add as many blank lines as is specified in `paragraph_spacing'. */
if (!force_flush_right)
{
for (i = 0; i < (paragraph_spacing - line_already_broken); i++)
{
insert ('\n');
/* Don't need anything extra for HTML in usual case of no
extra paragraph spacing. */
if (html && i > 0)
insert_string ("<br>");
}
}
/* If we are doing flush right indentation, then do it now
on the paragraph (really a single line). */
if (force_flush_right)
do_flush_right_indentation ();
flush_output ();
paragraph_is_open = 0;
no_indent = 0;
output_column = 0;
}
ignore_blank_line ();
}
/* Make the last line just read look as if it were only a newline. */
void
ignore_blank_line ()
{
last_inserted_character = '\n';
last_char_was_newline = 1;
}
/* Align the end of the text in output_paragraph with fill_column. */
void
do_flush_right_indentation ()
{
char *temp;
int temp_len;
kill_self_indent (-1);
if (output_paragraph[0] != '\n')
{
output_paragraph[output_paragraph_offset] = 0;
if (output_paragraph_offset < fill_column)
{
int i;
if (fill_column >= paragraph_buffer_len)
output_paragraph =
xrealloc (output_paragraph,
(paragraph_buffer_len += fill_column));
temp_len = strlen ((char *)output_paragraph);
temp = xmalloc (temp_len + 1);
memcpy (temp, (char *)output_paragraph, temp_len);
for (i = 0; i < fill_column - output_paragraph_offset; i++)
output_paragraph[i] = ' ';
memcpy ((char *)output_paragraph + i, temp, temp_len);
free (temp);
output_paragraph_offset = fill_column;
adjust_braces_following (0, i);
}
}
}
/* Begin a new paragraph. */
void
start_paragraph ()
{
/* First close existing one. */
if (paragraph_is_open)
close_paragraph ();
/* In either case, the insertion paragraph is no longer closed. */
insertion_paragraph_closed = 0;
/* However, the paragraph is open! */
paragraph_is_open = 1;
/* If we MUST_START_PARAGRAPH, that simply means that start_paragraph ()
had to be called before we would allow any other paragraph operations
to have an effect. */
if (!must_start_paragraph)
{
int amount_to_indent = 0;
/* If doing indentation, then insert the appropriate amount. */
if (!no_indent)
{
if (inhibit_paragraph_indentation)
{
amount_to_indent = current_indent;
if (inhibit_paragraph_indentation < 0)
inhibit_paragraph_indentation++;
}
else if (paragraph_start_indent < 0)
amount_to_indent = current_indent;
else
amount_to_indent = current_indent + paragraph_start_indent;
if (amount_to_indent >= output_column)
{
amount_to_indent -= output_column;
indent (amount_to_indent);
output_column += amount_to_indent;
}
}
}
else
must_start_paragraph = 0;
}
/* Insert the indentation specified by AMOUNT. */
void
indent (amount)
int amount;
{
if (html)
return;
/* For every START_POS saved within the brace stack which will be affected
by this indentation, bump that start pos forward. */
adjust_braces_following (output_paragraph_offset, amount);
while (--amount >= 0)
insert (' ');
}
/* Search forward for STRING in input_text.
FROM says where where to start. */
int
search_forward (string, from)
char *string;
int from;
{
int len = strlen (string);
while (from < input_text_length)
{
if (strncmp (input_text + from, string, len) == 0)
return from;
from++;
}
return -1;
}
/* Cross references. */
/* Return next comma-delimited argument, but do not cross a close-brace
boundary. Clean up whitespace, too. If EXPAND is nonzero, replace
the entire brace-delimited argument list with its expansion before
looking for the next comma. */
char *
get_xref_token (expand)
int expand;
{
char *string;
if (expand)
{
int old_offset = input_text_offset;
int old_lineno = line_number;
get_until_in_braces ("}", &string);
if (curchar () == '}') /* as opposed to end of text */
input_text_offset++;
if (input_text_offset > old_offset)
{
int limit = input_text_offset;
input_text_offset = old_offset;
line_number = old_lineno;
only_macro_expansion++;
replace_with_expansion (input_text_offset, &limit);
only_macro_expansion--;
}
free (string);
}
get_until_in_braces (",", &string);
if (curchar () == ',')
input_text_offset++;
fix_whitespace (string);
return string;
}
/* NOTE: If you wonder why the HTML output is produced with such a
peculiar mix of calls to add_word and execute_string, here's the
reason. get_xref_token (1) expands all macros in a reference, but
any other commands, like @value, @@, etc., are left intact. To
expand them, we need to run the arguments through execute_string.
However, characters like <, &, > and others cannot be let into
execute_string, because they will be escaped. See the mess? */
/* Make a cross reference. */
void
cm_xref (arg)
{
if (arg == START)
{
char *arg1 = get_xref_token (1); /* expands all macros in xref */
char *arg2 = get_xref_token (0);
char *arg3 = get_xref_token (0);
char *arg4 = get_xref_token (0);
char *arg5 = get_xref_token (0);
char *tem;
if (html)
{
if (!ref_flag)
add_word_args ("%s", px_ref_flag ? _("see ") : _("See "));
}
else
add_word_args ("%s", px_ref_flag ? "*note " : "*Note ");
if (*arg5 || *arg4)
{
char *node_name;
if (!*arg2)
{
if (*arg3)
node_name = arg3;
else
node_name = arg1;
}
else
node_name = arg2;
if (html)
{
/* html fixxme: revisit this; external node name not
much use to us with numbered nodes. */
add_word ("<a href=");
execute_string ("\"%s.html#", arg4);
/* Do not collapse -- to -, etc., in references. */
in_fixed_width_font++;
tem = expansion (node_name, 0);
in_fixed_width_font--;
add_escaped_anchor_name (tem);
free (tem);
add_word ("\">");
execute_string ("%s", arg1);
add_word ("</a>");
}
else
{
execute_string ("%s:", node_name);
in_fixed_width_font++;
execute_string (" (%s)%s%s", arg4, arg1, px_ref_flag ? "." : "");
in_fixed_width_font--;
}
/* Free all of the arguments found. */
if (arg1) free (arg1);
if (arg2) free (arg2);
if (arg3) free (arg3);
if (arg4) free (arg4);
if (arg5) free (arg5);
return;
}
else
remember_node_reference (arg1, line_number, followed_reference);
if (*arg3)
{
if (html)
{
add_word ("<a href=\"");
in_fixed_width_font++;
tem = expansion (arg1, 0);
in_fixed_width_font--;
add_anchor_name (tem, 1);
free (tem);
add_word ("\">");
execute_string ("%s", *arg2 ? arg2 : arg3);
add_word ("</a>");
}
else
{
execute_string ("%s:", *arg2 ? arg2 : arg3);
in_fixed_width_font++;
execute_string (" %s%s", arg1, px_ref_flag ? "." : "");
in_fixed_width_font--;
}
}
else
{
if (html)
{
add_word ("<a href=\"");
in_fixed_width_font++;
tem = expansion (arg1, 0);
in_fixed_width_font--;
add_anchor_name (tem, 1);
free (tem);
add_word ("\">");
execute_string ("%s", *arg2 ? arg2 : arg1);
add_word ("</a>");
}
else
{
if (*arg2)
{
execute_string ("%s:", arg2);
in_fixed_width_font++;
execute_string (" %s%s", arg1, px_ref_flag ? "." : "");
in_fixed_width_font--;
}
else
{
in_fixed_width_font++;
execute_string ("%s::", arg1);
in_fixed_width_font--;
}
}
}
/* Free all of the arguments found. */
if (arg1) free (arg1);
if (arg2) free (arg2);
if (arg3) free (arg3);
if (arg4) free (arg4);
if (arg5) free (arg5);
}
else
{ /* Check to make sure that the next non-whitespace character is
valid to follow an xref (so info readers can find the node
names). `input_text_offset' is pointing at the "}" which ended
the xref or ref command. */
int temp;
for (temp = input_text_offset + 1; temp < input_text_length; )
{
if (cr_or_whitespace (input_text[temp]))
temp++;
else
{
if (input_text[temp] != '.' && input_text[temp] != ',')
warning (_("`.' or `,' must follow cross reference, not %c"),
input_text[temp]);
break;
}
}
}
}
void
cm_pxref (arg)
int arg;
{
if (arg == START)
{
px_ref_flag++;
cm_xref (arg);
px_ref_flag--;
}
/* Note that cm_xref isn't called with arg == END, which disables
the code near the end of cm_xref that checks for `.' or `,'
after the cross-reference. This is because @pxref{} generates
the required character itself, when needed. */
}
void
cm_ref (arg)
int arg;
{
if (arg == START)
{
ref_flag++;
cm_xref (arg);
ref_flag--;
}
}
void
cm_inforef (arg)
int arg;
{
if (arg == START)
{
char *node = get_xref_token (1); /* expands all macros in inforef */
char *pname = get_xref_token (0);
char *file = get_xref_token (0);
if (html)
{
add_word (_("see "));
/* html fixxme: revisit this */
add_word ("<a href=");
execute_string ("\"%s.html\"", file);
add_word (">");
execute_string ("%s", pname);
add_word ("</a>");
}
else
{
if (*pname)
execute_string ("*note %s: (%s)%s", pname, file, node);
else
execute_string ("*note (%s)%s::", file, node);
}
free (node);
free (pname);
free (file);
}
}
/* A URL reference. */
void
cm_uref (arg)
int arg;
{
if (arg == START)
{
extern int printing_index;
char *url = get_xref_token (1); /* expands all macros in uref */
char *desc = get_xref_token (0);
char *replacement = get_xref_token (0);
if (html)
{ /* never need to show the url */
add_word ("<a href=");
/* don't collapse `--' etc. in the url */
in_fixed_width_font++;
execute_string ("\"%s\"", url);
in_fixed_width_font--;
add_word (">");
execute_string ("%s", *replacement ? replacement
: (*desc ? desc : url));
add_word ("</a>");
}
else if (*replacement) /* do not show the url */
execute_string ("%s", replacement);
else if (*desc) /* show both text and url */
{
execute_string ("%s ", desc);
in_fixed_width_font++;
execute_string ("(%s)", url);
in_fixed_width_font--;
}
else /* no text at all, so have the url to show */
{
in_fixed_width_font++;
execute_string ("%s%s%s",
printing_index ? "" : "`",
url,
printing_index ? "" : "'");
in_fixed_width_font--;
}
if (url)
free (url);
if (desc)
free (desc);
if (replacement)
free (replacement);
}
}
/* An email reference. */
void
cm_email (arg)
int arg;
{
if (arg == START)
{
char *addr = get_xref_token (1); /* expands all macros in email */
char *name = get_xref_token (0);
if (html)
{
add_word ("<a href=");
/* don't collapse `--' etc. in the address */
in_fixed_width_font++;
execute_string ("\"mailto:%s\"", addr);
in_fixed_width_font--;
add_word (">");
execute_string ("%s", *name ? name : addr);
add_word ("</a>");
}
else
{
execute_string ("%s%s", name, *name ? " " : "");
in_fixed_width_font++;
execute_string ("<%s>", addr);
in_fixed_width_font--;
}
if (addr)
free (addr);
if (name)
free (name);
}
}
/* An external image is a reference, kind of. The parsing is (not
coincidentally) similar, anyway. */
void
cm_image (arg)
int arg;
{
char *name_arg, *rest;
if (arg == END)
return;
name_arg = get_xref_token (1); /* expands all macros in image */
/* We don't (yet) care about any other args, but read them so they
don't end up in the text. */
rest = get_xref_token (0);
if (rest)
free (rest);
rest = get_xref_token (0);
if (rest)
free (rest);
if (*name_arg)
{
char *fullname = xmalloc (strlen (name_arg) + 4 + 1);
if (html)
{ /* fixxme It would be nice to insert more useful alt text. */
sprintf (fullname, "%s.png", name_arg);
if (access (fullname, R_OK) != 0)
{
sprintf (fullname, "%s.jpg", name_arg);
if (access (fullname, R_OK) != 0)
{
line_error (_("No .png or .jpg for `%s'"), name_arg);
return;
}
}
add_word_args ("<img src=\"%s\" alt=\"%s\">", fullname, fullname);
}
else
{ /* Try to open foo.txt. */
FILE *image_file;
strcpy (fullname, name_arg);
strcat (fullname, ".txt");
image_file = fopen (fullname, "r");
if (image_file)
{
int ch;
int save_inhibit_indentation = inhibit_paragraph_indentation;
int save_filling_enabled = filling_enabled;
inhibit_paragraph_indentation = 1;
filling_enabled = 0;
last_char_was_newline = 0;
/* Maybe we need to remove the final newline if the image
file is only one line to allow in-line images. On the
other hand, they could just make the file without a
final newline. */
while ((ch = getc (image_file)) != EOF)
add_char (ch);
inhibit_paragraph_indentation = save_inhibit_indentation;
filling_enabled = save_filling_enabled;
if (fclose (image_file) != 0)
perror (fullname);
}
else
warning (_("@image file `%s' unreadable: %s"), fullname,
strerror (errno));
}
free (fullname);
}
else
line_error (_("@image missing filename argument"));
if (name_arg)
free (name_arg);
}
/* Conditionals. */
/* A structure which contains `defined' variables. */
typedef struct defines {
struct defines *next;
char *name;
char *value;
} DEFINE;
/* The linked list of `set' defines. */
DEFINE *defines = NULL;
/* Add NAME to the list of `set' defines. */
void
set (name, value)
char *name;
char *value;
{
DEFINE *temp;
for (temp = defines; temp; temp = temp->next)
if (strcmp (name, temp->name) == 0)
{
free (temp->value);
temp->value = xstrdup (value);
return;
}
temp = xmalloc (sizeof (DEFINE));
temp->next = defines;
temp->name = xstrdup (name);
temp->value = xstrdup (value);
defines = temp;
}
/* Remove NAME from the list of `set' defines. */
void
clear (name)
char *name;
{
DEFINE *temp, *last;
last = NULL;
temp = defines;
while (temp)
{
if (strcmp (temp->name, name) == 0)
{
if (last)
last->next = temp->next;
else
defines = temp->next;
free (temp->name);
free (temp->value);
free (temp);
break;
}
last = temp;
temp = temp->next;
}
}
/* Return the value of NAME. The return value is NULL if NAME is unset. */
char *
set_p (name)
char *name;
{
DEFINE *temp;
for (temp = defines; temp; temp = temp->next)
if (strcmp (temp->name, name) == 0)
return temp->value;
return NULL;
}
/* Create a variable whose name appears as the first word on this line. */
void
cm_set ()
{
handle_variable (SET);
}
/* Remove a variable whose name appears as the first word on this line. */
void
cm_clear ()
{
handle_variable (CLEAR);
}
void
cm_ifset ()
{
handle_variable (IFSET);
}
void
cm_ifclear ()
{
handle_variable (IFCLEAR);
}
/* This command takes braces, but we parse the contents specially, so we
don't use the standard brace popping code.
The syntax @ifeq{arg1, arg2, texinfo-commands} performs texinfo-commands
if ARG1 and ARG2 caselessly string compare to the same string, otherwise,
it produces no output. */
void
cm_ifeq ()
{
char **arglist;
arglist = get_brace_args (0);
if (arglist)
{
if (array_len (arglist) > 1)
{
if ((strcasecmp (arglist[0], arglist[1]) == 0) &&
(arglist[2]))
execute_string ("%s\n", arglist[2]);
}
free_array (arglist);
}
}
void
cm_value (arg, start_pos, end_pos)
int arg, start_pos, end_pos;
{
static int value_level = 0, saved_meta_pos = -1;
/* All the text after @value{ upto the matching } will eventually
disappear from output_paragraph, when this function is called
with ARG == END. If the text produced until then sets
meta_char_pos, we will need to restore it to the value it had
before @value was seen. So we need to save the previous value
of meta_char_pos here. */
if (arg == START)
{
/* If we are already inside some outer @value, don't overwrite
the value saved in saved_meta_pos. */
if (!value_level)
saved_meta_pos = meta_char_pos;
value_level++;
/* While the argument of @value is processed, we need to inhibit
textual transformations like "--" into "-", since @set didn't
do that when it grabbed the name of the variable. */
in_fixed_width_font++;
}
else
{
char *name = (char *) &output_paragraph[start_pos];
char *value;
output_paragraph[end_pos] = 0;
name = xstrdup (name);
value = set_p (name);
output_column -= end_pos - start_pos;
output_paragraph_offset = start_pos;
/* Restore the previous value of meta_char_pos if the stuff
inside this @value{} moved it. */
if (saved_meta_pos == -1) /* can't happen inside @value{} */
abort ();
if (value_level == 1
&& meta_char_pos >= start_pos && meta_char_pos < end_pos)
{
meta_char_pos = saved_meta_pos;
saved_meta_pos = -1;
}
value_level--;
/* No need to decrement in_fixed_width_font, since before
we are called with arg == END, the reader loop already
popped the brace stack, which restored in_fixed_width_font,
among other things. */
if (value)
execute_string ("%s", value);
else
add_word_args (_("{No value for `%s'}"), name);
free (name);
}
}
/* Set, clear, or conditionalize based on ACTION. */
void
handle_variable (action)
int action;
{
char *name;
get_rest_of_line (0, &name);
/* If we hit the end of text in get_rest_of_line, backing up
input pointer will cause the last character of the last line
be pushed back onto the input, which is wrong. */
if (input_text_offset < input_text_length)
backup_input_pointer ();
handle_variable_internal (action, name);
free (name);
}
void
handle_variable_internal (action, name)
int action;
char *name;
{
char *temp;
int delimiter, additional_text_present = 0;
/* Only the first word of NAME is a valid tag. */
temp = name;
delimiter = 0;
while (*temp && (delimiter || !whitespace (*temp)))
{
/* #if defined (SET_WITH_EQUAL) */
if (*temp == '"' || *temp == '\'')
{
if (*temp == delimiter)
delimiter = 0;
else
delimiter = *temp;
}
/* #endif SET_WITH_EQUAL */
temp++;
}
if (*temp)
additional_text_present++;
*temp = 0;
if (!*name)
line_error (_("%c%s requires a name"), COMMAND_PREFIX, command);
else
{
switch (action)
{
case SET:
{
char *value;
#if defined (SET_WITH_EQUAL)
/* Allow a value to be saved along with a variable. The value is
the text following an `=' sign in NAME, if any is present. */
for (value = name; *value && *value != '='; value++);
if (*value)
*value++ = 0;
if (*value == '"' || *value == '\'')
{
value++;
value[strlen (value) - 1] = 0;
}
#else /* !SET_WITH_EQUAL */
/* The VALUE of NAME is the remainder of the line sans
whitespace. */
if (additional_text_present)
{
value = temp + 1;
canon_white (value);
}
else
value = "";
#endif /* !SET_WITH_VALUE */
set (name, value);
}
break;
case CLEAR:
clear (name);
break;
case IFSET:
case IFCLEAR:
/* If IFSET and NAME is not set, or if IFCLEAR and NAME is set,
read lines from the the file until we reach a matching
"@end CONDITION". This means that we only take note of
"@ifset/clear" and "@end" commands. */
{
char condition[8];
int condition_len;
int orig_line_number = line_number;
if (action == IFSET)
strcpy (condition, "ifset");
else
strcpy (condition, "ifclear");
condition_len = strlen (condition);
if ((action == IFSET && !set_p (name))
|| (action == IFCLEAR && set_p (name)))
{
int level = 0, done = 0;
while (!done && input_text_offset < input_text_length)
{
char *freeable_line, *line;
get_rest_of_line (0, &freeable_line);
for (line = freeable_line; whitespace (*line); line++);
if (*line == COMMAND_PREFIX &&
(strncmp (line + 1, condition, condition_len) == 0))
level++;
else if (strncmp (line, "@end", 4) == 0)
{
char *cname = line + 4;
char *temp;
while (*cname && whitespace (*cname))
cname++;
temp = cname;
while (*temp && !whitespace (*temp))
temp++;
*temp = 0;
if (strcmp (cname, condition) == 0)
{
if (!level)
{
done = 1;
}
else
level--;
}
}
free (freeable_line);
}
if (!done)
{
int save = line_number;
line_number = orig_line_number;
line_error (_("Reached eof before matching @end %s"),
condition);
line_number = save;
}
/* We found the end of a false @ifset/ifclear. If we are
in a menu, back up over the newline that ends the ifset,
since that newline may also begin the next menu entry. */
break;
}
else
{
if (action == IFSET)
begin_insertion (ifset);
else
begin_insertion (ifclear);
}
}
break;
}
}
}
/* Execution of random text not in file. */
typedef struct {
char *string; /* The string buffer. */
int size; /* The size of the buffer. */
int in_use; /* Nonzero means string currently in use. */
} EXECUTION_STRING;
static EXECUTION_STRING **execution_strings = NULL;
static int execution_strings_index = 0;
static int execution_strings_slots = 0;
EXECUTION_STRING *
get_execution_string (initial_size)
int initial_size;
{
int i = 0;
EXECUTION_STRING *es = NULL;
if (execution_strings)
{
for (i = 0; i < execution_strings_index; i++)
if (execution_strings[i] && (execution_strings[i]->in_use == 0))
{
es = execution_strings[i];
break;
}
}
if (!es)
{
if (execution_strings_index + 1 >= execution_strings_slots)
{
execution_strings = xrealloc
(execution_strings,
(execution_strings_slots += 3) * sizeof (EXECUTION_STRING *));
for (; i < execution_strings_slots; i++)
execution_strings[i] = NULL;
}
execution_strings[execution_strings_index] =
xmalloc (sizeof (EXECUTION_STRING));
es = execution_strings[execution_strings_index];
execution_strings_index++;
es->size = 0;
es->string = NULL;
es->in_use = 0;
}
if (initial_size > es->size)
{
es->string = xrealloc (es->string, initial_size);
es->size = initial_size;
}
return es;
}
/* Given a pointer to TEXT and its desired length NEW_LEN, find TEXT's
entry in the execution_strings[] array and change the .STRING and
.SIZE members of that entry as appropriate. */
void
maybe_update_execution_strings (text, new_len)
char **text;
unsigned new_len;
{
int i = 0;
if (execution_strings)
{
for (i = 0; i < execution_strings_index; i++)
if (execution_strings[i] && (execution_strings[i]->in_use == 1) &&
execution_strings[i]->string == *text)
{
/* Don't ever shrink the string storage in execution_strings[]!
execute_string assumes that it is always big enough to store
every possible execution_string, and will break if that's
not true. So we only enlarge the string storage if the
current size isn't big enough. */
if (execution_strings[i]->size < new_len)
{
execution_strings[i]->string =
*text = xrealloc (*text, new_len + 1);
execution_strings[i]->size = new_len + 1;
}
return;
}
}
/* We should *never* end up here, since if we are inside
execute_string, TEXT is always in execution_strings[]. */
abort ();
}
/* Execute the string produced by formatting the ARGs with FORMAT. This
is like submitting a new file with @include. */
void
#if defined (VA_FPRINTF) && __STDC__
execute_string (char *format, ...)
#else
execute_string (format, va_alist)
char *format;
va_dcl
#endif
{
EXECUTION_STRING *es;
char *temp_string;
#ifdef VA_FPRINTF
va_list ap;
#endif
es = get_execution_string (4000);
temp_string = es->string;
es->in_use = 1;
VA_START (ap, format);
#ifdef VA_SPRINTF
VA_SPRINTF (temp_string, format, ap);
#else
sprintf (temp_string, format, a1, a2, a3, a4, a5, a6, a7, a8);
#endif /* not VA_SPRINTF */
va_end (ap);
pushfile ();
input_text_offset = 0;
input_text = temp_string;
input_filename = xstrdup (input_filename);
input_text_length = strlen (temp_string);
executing_string++;
reader_loop ();
free (input_filename);
popfile ();
executing_string--;
es->in_use = 0;
}
/* Return what would be output for STR (in newly-malloced memory), i.e.,
expand Texinfo commands. If IMPLICIT_CODE is set, expand @code{STR}. */
char *
expansion (str, implicit_code)
char *str;
int implicit_code;
{
int length;
char *result;
/* Inhibit any real output. */
int start = output_paragraph_offset;
int saved_paragraph_is_open = paragraph_is_open;
int saved_output_column = output_column;
/* Inhibit indentation and filling, so that extra newlines
are not added to the expansion. (This is undesirable if
we write the expanded text to macro_expansion_output_stream.) */
int saved_filling_enabled = filling_enabled;
int saved_indented_fill = indented_fill;
int saved_no_indent = no_indent;
int saved_escape_html = escape_html;
int saved_meta_pos = meta_char_pos;
int saved_last_char = last_inserted_character;
int saved_last_nl = last_char_was_newline;
/* If we are called in the middle of processing a command, we need
to dup and save the global variable `command' (which holds the
name of this command), since the recursive reader loop will free
it from under our feet if it finds any macros in STR. */
char *saved_command = command ? xstrdup (command) : NULL;
filling_enabled = 0;
indented_fill = 0;
no_indent = 1;
escape_html = 0;
inhibit_output_flushing ();
paragraph_is_open = 1;
execute_string (implicit_code ? "@code{%s}" : "%s", str);
uninhibit_output_flushing ();
/* Copy the expansion from the buffer. */
length = output_paragraph_offset - start;
result = xmalloc (1 + length);
memcpy (result, (char *) (output_paragraph + start), length);
result[length] = 0;
/* Pretend it never happened. */
free_and_clear (&command);
command = saved_command;
output_paragraph_offset = start;
paragraph_is_open = saved_paragraph_is_open;
output_column = saved_output_column;
filling_enabled = saved_filling_enabled;
indented_fill = saved_indented_fill;
no_indent = saved_no_indent;
escape_html = saved_escape_html;
meta_char_pos = saved_meta_pos;
last_inserted_character = saved_last_char;
last_char_was_newline = saved_last_nl;
return result;
}
/* Return text (info) expansion of STR no matter what the current output
format is. */
char *
text_expansion (str)
char *str;
{
char *ret;
int save_html = html;
html = 0;
ret = expansion (str, 0);
html = save_html;
return ret;
}
/* Set the paragraph indentation variable to the value specified in STRING.
Values can be:
`asis': Don't change existing indentation.
`none': Remove existing indentation.
NUM: Indent NUM spaces at the starts of paragraphs.
If NUM is zero, we assume `none'.
Returns 0 if successful, or nonzero if STRING isn't one of the above. */
int
set_paragraph_indent (string)
char *string;
{
if (strcmp (string, "asis") == 0 || strcmp (string, _("asis")) == 0)
paragraph_start_indent = 0;
else if (strcmp (string, "none") == 0 || strcmp (string, _("none")) == 0)
paragraph_start_indent = -1;
else
{
if (sscanf (string, "%d", &paragraph_start_indent) != 1)
return -1;
else
{
if (paragraph_start_indent == 0)
paragraph_start_indent = -1;
}
}
return 0;
}
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