mirror of
git://git.gnupg.org/gnupg.git
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1488 lines
40 KiB
C
1488 lines
40 KiB
C
/* yat2m.c - Yet Another Texi 2 Man converter
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* Copyright (C) 2005, 2013 g10 Code GmbH
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* Copyright (C) 2006, 2008, 2011 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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This is a simple texinfo to man page converter. It needs some
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special markup in th e texinfo and tries best to get a create man
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page. It has been designed for the GnuPG man pages and thus only
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a few texinfo commands are supported.
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To use this you need to add the following macros into your texinfo
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source:
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@macro manpage {a}
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@end macro
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@macro mansect {a}
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@end macro
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@macro manpause
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@end macro
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@macro mancont
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@end macro
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They are used by yat2m to select parts of the Texinfo which should
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go into the man page. These macros need to be used without leading
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left space. Processing starts after a "manpage" macro has been
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seen. "mansect" identifies the section and yat2m make sure to
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emit the sections in the proper order. Note that @mansect skips
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the next input line if that line begins with @section, @subsection or
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@chapheading.
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To insert verbatim troff markup, the following texinfo code may be
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used:
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@ifset manverb
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.B whateever you want
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@end ifset
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alternativly a special comment may be used:
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@c man:.B whatever you want
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This is useful in case you need just one line. If you want to
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include parts only in the man page but keep the texinfo
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translation you may use:
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@ifset isman
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stuff to be rendered only on man pages
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@end ifset
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or to exclude stuff from man pages:
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@ifclear isman
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stuff not to be rendered on man pages
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@end ifclear
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the keyword @section is ignored, however @subsection gets rendered
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as ".SS". @menu is completely skipped. Several man pages may be
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extracted from one file, either using the --store or the --select
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option.
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If you want to indent tables in the source use this style:
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@table foo
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@item
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@item
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@table
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@item
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@end
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@end
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Don't change the indentation within a table and keep the same
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number of white space at the start of the line. yat2m simply
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detects the number of white spaces in front of an @item and remove
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this number of spaces from all following lines until a new @item
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is found or there are less spaces than for the last @item.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <string.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <assert.h>
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#include <ctype.h>
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#include <time.h>
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#define PGM "yat2m"
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#define VERSION "1.0"
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/* The maximum length of a line including the linefeed and one extra
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character. */
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#define LINESIZE 1024
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/* Number of allowed condition nestings. */
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#define MAX_CONDITION_NESTING 10
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/* Option flags. */
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static int verbose;
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static int quiet;
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static int debug;
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static const char *opt_source;
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static const char *opt_release;
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static const char *opt_select;
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static const char *opt_include;
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static int opt_store;
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/* Flag to keep track whether any error occurred. */
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static int any_error;
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/* Object to keep macro definitions. */
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struct macro_s
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{
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struct macro_s *next;
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char *value; /* Malloced value. */
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char name[1];
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};
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typedef struct macro_s *macro_t;
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/* List of all defined macros. */
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static macro_t macrolist;
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/* List of global macro names. The value part is not used. */
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static macro_t predefinedmacrolist;
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/* Object to keep track of @isset and @ifclear. */
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struct condition_s
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{
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int manverb; /* "manverb" needs special treatment. */
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int isset; /* This is an @isset condition. */
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char name[1]; /* Name of the condition macro. */
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};
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typedef struct condition_s *condition_t;
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/* The stack used to evaluate conditions. And the current states. */
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static condition_t condition_stack[MAX_CONDITION_NESTING];
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static int condition_stack_idx;
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static int cond_is_active; /* State of ifset/ifclear */
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static int cond_in_verbatim; /* State of "manverb". */
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/* Object to store one line of content. */
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struct line_buffer_s
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{
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struct line_buffer_s *next;
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int verbatim; /* True if LINE contains verbatim data. The default
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is Texinfo source. */
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char *line;
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};
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typedef struct line_buffer_s *line_buffer_t;
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/* Object to collect the data of a section. */
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struct section_buffer_s
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{
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char *name; /* Malloced name of the section. This may be
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NULL to indicate this slot is not used. */
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line_buffer_t lines; /* Linked list with the lines of the section. */
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line_buffer_t *lines_tail; /* Helper for faster appending to the
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linked list. */
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line_buffer_t last_line; /* Points to the last line appended. */
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};
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typedef struct section_buffer_s *section_buffer_t;
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/* Variable to keep info about the current page together. */
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static struct
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{
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/* Filename of the current page or NULL if no page is active. Malloced. */
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char *name;
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/* Number of allocated elements in SECTIONS below. */
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size_t n_sections;
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/* Array with the data of the sections. */
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section_buffer_t sections;
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} thepage;
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/* The list of standard section names. COMMANDS and ASSUAN are GnuPG
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specific. */
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static const char * const standard_sections[] =
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{ "NAME", "SYNOPSIS", "DESCRIPTION",
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"RETURN VALUE", "EXIT STATUS", "ERROR HANDLING", "ERRORS",
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"COMMANDS", "OPTIONS", "USAGE", "EXAMPLES", "FILES",
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"ENVIRONMENT", "DIAGNOSTICS", "SECURITY", "CONFORMING TO",
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"ASSUAN", "NOTES", "BUGS", "AUTHOR", "SEE ALSO", NULL };
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/*-- Local prototypes. --*/
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static void proc_texi_buffer (FILE *fp, const char *line, size_t len,
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int *table_level, int *eol_action);
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/* Print diagnostic message and exit with failure. */
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static void
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die (const char *format, ...)
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{
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va_list arg_ptr;
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fflush (stdout);
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fprintf (stderr, "%s: ", PGM);
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va_start (arg_ptr, format);
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vfprintf (stderr, format, arg_ptr);
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va_end (arg_ptr);
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putc ('\n', stderr);
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exit (1);
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}
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/* Print diagnostic message. */
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static void
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err (const char *format, ...)
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{
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va_list arg_ptr;
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fflush (stdout);
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if (strncmp (format, "%s:%d:", 6))
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fprintf (stderr, "%s: ", PGM);
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va_start (arg_ptr, format);
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vfprintf (stderr, format, arg_ptr);
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va_end (arg_ptr);
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putc ('\n', stderr);
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any_error = 1;
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}
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/* Print diagnostic message. */
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static void
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inf (const char *format, ...)
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{
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va_list arg_ptr;
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fflush (stdout);
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fprintf (stderr, "%s: ", PGM);
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va_start (arg_ptr, format);
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vfprintf (stderr, format, arg_ptr);
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va_end (arg_ptr);
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putc ('\n', stderr);
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}
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static void *
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xmalloc (size_t n)
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{
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void *p = malloc (n);
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if (!p)
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die ("out of core: %s", strerror (errno));
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return p;
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}
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static void *
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xcalloc (size_t n, size_t m)
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{
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void *p = calloc (n, m);
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if (!p)
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die ("out of core: %s", strerror (errno));
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return p;
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}
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static void *
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xrealloc (void *old, size_t n)
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{
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void *p = realloc (old, n);
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if (!p)
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die ("out of core: %s", strerror (errno));
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return p;
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}
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static char *
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xstrdup (const char *string)
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{
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void *p = malloc (strlen (string)+1);
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if (!p)
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die ("out of core: %s", strerror (errno));
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strcpy (p, string);
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return p;
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}
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/* Uppercase the ascii characters in STRING. */
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static char *
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ascii_strupr (char *string)
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{
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char *p;
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for (p = string; *p; p++)
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if (!(*p & 0x80))
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*p = toupper (*p);
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return string;
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}
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/* Return the current date as an ISO string. */
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const char *
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isodatestring (void)
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{
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static char buffer[11+5];
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struct tm *tp;
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time_t atime = time (NULL);
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if (atime < 0)
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strcpy (buffer, "????" "-??" "-??");
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else
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{
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tp = gmtime (&atime);
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sprintf (buffer,"%04d-%02d-%02d",
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1900+tp->tm_year, tp->tm_mon+1, tp->tm_mday );
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}
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return buffer;
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}
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/* Add NAME to the list of predefined macros which are global for all
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files. */
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static void
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add_predefined_macro (const char *name)
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{
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macro_t m;
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for (m=predefinedmacrolist; m; m = m->next)
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if (!strcmp (m->name, name))
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break;
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if (!m)
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{
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m = xcalloc (1, sizeof *m + strlen (name));
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strcpy (m->name, name);
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m->next = predefinedmacrolist;
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predefinedmacrolist = m;
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}
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}
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/* Create or update a macro with name MACRONAME and set its values TO
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MACROVALUE. Note that ownership of the macro value is transferred
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to this function. */
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static void
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set_macro (const char *macroname, char *macrovalue)
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{
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macro_t m;
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for (m=macrolist; m; m = m->next)
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if (!strcmp (m->name, macroname))
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break;
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if (m)
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free (m->value);
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else
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{
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m = xcalloc (1, sizeof *m + strlen (macroname));
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strcpy (m->name, macroname);
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m->next = macrolist;
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macrolist = m;
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}
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m->value = macrovalue;
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macrovalue = NULL;
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}
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/* Return true if the macro NAME is set, i.e. not the empty string and
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not evaluating to 0. */
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static int
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macro_set_p (const char *name)
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{
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macro_t m;
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for (m = macrolist; m ; m = m->next)
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if (!strcmp (m->name, name))
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break;
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if (!m || !m->value || !*m->value)
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return 0;
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if ((*m->value & 0x80) || !isdigit (*m->value))
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return 1; /* Not a digit but some other string. */
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return !!atoi (m->value);
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}
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/* Evaluate the current conditions. */
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static void
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evaluate_conditions (const char *fname, int lnr)
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{
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int i;
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/* for (i=0; i < condition_stack_idx; i++) */
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/* inf ("%s:%d: stack[%d] %s %s %c", */
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/* fname, lnr, i, condition_stack[i]->isset? "set":"clr", */
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/* condition_stack[i]->name, */
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/* (macro_set_p (condition_stack[i]->name) */
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/* ^ !condition_stack[i]->isset)? 't':'f'); */
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cond_is_active = 1;
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cond_in_verbatim = 0;
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if (condition_stack_idx)
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{
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for (i=0; i < condition_stack_idx; i++)
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{
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if (condition_stack[i]->manverb)
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cond_in_verbatim = (macro_set_p (condition_stack[i]->name)
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^ !condition_stack[i]->isset);
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else if (!(macro_set_p (condition_stack[i]->name)
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^ !condition_stack[i]->isset))
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{
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cond_is_active = 0;
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break;
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}
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}
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}
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||
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||
/* inf ("%s:%d: active=%d verbatim=%d", */
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/* fname, lnr, cond_is_active, cond_in_verbatim); */
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}
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||
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||
/* Push a condition with condition macro NAME onto the stack. If
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ISSET is true, a @isset condition is pushed. */
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static void
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push_condition (const char *name, int isset, const char *fname, int lnr)
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{
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condition_t cond;
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int manverb = 0;
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||
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if (condition_stack_idx >= MAX_CONDITION_NESTING)
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{
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err ("%s:%d: condition nested too deep", fname, lnr);
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return;
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||
}
|
||
|
||
if (!strcmp (name, "manverb"))
|
||
{
|
||
if (!isset)
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||
{
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||
err ("%s:%d: using \"@ifclear manverb\" is not allowed", fname, lnr);
|
||
return;
|
||
}
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||
manverb = 1;
|
||
}
|
||
|
||
cond = xcalloc (1, sizeof *cond + strlen (name));
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||
cond->manverb = manverb;
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||
cond->isset = isset;
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strcpy (cond->name, name);
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||
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||
condition_stack[condition_stack_idx++] = cond;
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||
evaluate_conditions (fname, lnr);
|
||
}
|
||
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||
|
||
/* Remove the last condition from the stack. ISSET is used for error
|
||
reporting. */
|
||
static void
|
||
pop_condition (int isset, const char *fname, int lnr)
|
||
{
|
||
if (!condition_stack_idx)
|
||
{
|
||
err ("%s:%d: unbalanced \"@end %s\"",
|
||
fname, lnr, isset?"isset":"isclear");
|
||
return;
|
||
}
|
||
condition_stack_idx--;
|
||
free (condition_stack[condition_stack_idx]);
|
||
condition_stack[condition_stack_idx] = NULL;
|
||
evaluate_conditions (fname, lnr);
|
||
}
|
||
|
||
|
||
|
||
/* Return a section buffer for the section NAME. Allocate a new buffer
|
||
if this is a new section. Keep track of the sections in THEPAGE.
|
||
This function may reallocate the section array in THEPAGE. */
|
||
static section_buffer_t
|
||
get_section_buffer (const char *name)
|
||
{
|
||
int i;
|
||
section_buffer_t sect;
|
||
|
||
/* If there is no section we put everything into the required NAME
|
||
section. Given that this is the first one listed it is likely
|
||
that error are easily visible. */
|
||
if (!name)
|
||
name = "NAME";
|
||
|
||
for (i=0; i < thepage.n_sections; i++)
|
||
{
|
||
sect = thepage.sections + i;
|
||
if (sect->name && !strcmp (name, sect->name))
|
||
return sect;
|
||
}
|
||
for (i=0; i < thepage.n_sections; i++)
|
||
if (!thepage.sections[i].name)
|
||
break;
|
||
if (i < thepage.n_sections)
|
||
sect = thepage.sections + i;
|
||
else
|
||
{
|
||
/* We need to allocate or reallocate the section array. */
|
||
size_t old_n = thepage.n_sections;
|
||
size_t new_n = 20;
|
||
|
||
if (!old_n)
|
||
thepage.sections = xcalloc (new_n, sizeof *thepage.sections);
|
||
else
|
||
{
|
||
thepage.sections = xrealloc (thepage.sections,
|
||
((old_n + new_n)
|
||
* sizeof *thepage.sections));
|
||
memset (thepage.sections + old_n, 0,
|
||
new_n * sizeof *thepage.sections);
|
||
}
|
||
thepage.n_sections += new_n;
|
||
|
||
/* Setup the tail pointers. */
|
||
for (i=old_n; i < thepage.n_sections; i++)
|
||
{
|
||
sect = thepage.sections + i;
|
||
sect->lines_tail = §->lines;
|
||
}
|
||
sect = thepage.sections + old_n;
|
||
}
|
||
|
||
/* Store the name. */
|
||
assert (!sect->name);
|
||
sect->name = xstrdup (name);
|
||
return sect;
|
||
}
|
||
|
||
|
||
|
||
/* Add the content of LINE to the section named SECTNAME. */
|
||
static void
|
||
add_content (const char *sectname, char *line, int verbatim)
|
||
{
|
||
section_buffer_t sect;
|
||
line_buffer_t lb;
|
||
|
||
sect = get_section_buffer (sectname);
|
||
if (sect->last_line && !sect->last_line->verbatim == !verbatim)
|
||
{
|
||
/* Lets append that line to the last one. We do this to keep
|
||
all lines of the same kind (i.e.verbatim or not) together in
|
||
one large buffer. */
|
||
size_t n1, n;
|
||
|
||
lb = sect->last_line;
|
||
n1 = strlen (lb->line);
|
||
n = n1 + 1 + strlen (line) + 1;
|
||
lb->line = xrealloc (lb->line, n);
|
||
strcpy (lb->line+n1, "\n");
|
||
strcpy (lb->line+n1+1, line);
|
||
}
|
||
else
|
||
{
|
||
lb = xcalloc (1, sizeof *lb);
|
||
lb->verbatim = verbatim;
|
||
lb->line = xstrdup (line);
|
||
sect->last_line = lb;
|
||
*sect->lines_tail = lb;
|
||
sect->lines_tail = &lb->next;
|
||
}
|
||
}
|
||
|
||
|
||
/* Prepare for a new man page using the filename NAME. */
|
||
static void
|
||
start_page (char *name)
|
||
{
|
||
if (verbose)
|
||
inf ("starting page '%s'", name);
|
||
assert (!thepage.name);
|
||
thepage.name = xstrdup (name);
|
||
thepage.n_sections = 0;
|
||
}
|
||
|
||
|
||
/* Write the .TH entry of the current page. Return -1 if there is a
|
||
problem with the page. */
|
||
static int
|
||
write_th (FILE *fp)
|
||
{
|
||
char *name, *p;
|
||
|
||
fputs (".\\\" Created from Texinfo source by yat2m " VERSION "\n", fp);
|
||
|
||
name = ascii_strupr (xstrdup (thepage.name));
|
||
p = strrchr (name, '.');
|
||
if (!p || !p[1])
|
||
{
|
||
err ("no section name in man page '%s'", thepage.name);
|
||
free (name);
|
||
return -1;
|
||
}
|
||
*p++ = 0;
|
||
fprintf (fp, ".TH %s %s %s \"%s\" \"%s\"\n",
|
||
name, p, isodatestring (), opt_release, opt_source);
|
||
free (name);
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Process the texinfo command COMMAND (without the leading @) and
|
||
write output if needed to FP. REST is the remainer of the line
|
||
which should either point to an opening brace or to a white space.
|
||
The function returns the number of characters already processed
|
||
from REST. LEN is the usable length of REST. TABLE_LEVEL is used to
|
||
control the indentation of tables. */
|
||
static size_t
|
||
proc_texi_cmd (FILE *fp, const char *command, const char *rest, size_t len,
|
||
int *table_level, int *eol_action)
|
||
{
|
||
static struct {
|
||
const char *name; /* Name of the command. */
|
||
int what; /* What to do with this command. */
|
||
const char *lead_in; /* String to print with a opening brace. */
|
||
const char *lead_out;/* String to print with the closing brace. */
|
||
} cmdtbl[] = {
|
||
{ "command", 0, "\\fB", "\\fR" },
|
||
{ "code", 0, "\\fB", "\\fR" },
|
||
{ "sc", 0, "\\fB", "\\fR" },
|
||
{ "var", 0, "\\fI", "\\fR" },
|
||
{ "samp", 0, "\\(aq", "\\(aq" },
|
||
{ "file", 0, "\\(oq\\fI","\\fR\\(cq" },
|
||
{ "env", 0, "\\(oq\\fI","\\fR\\(cq" },
|
||
{ "acronym", 0 },
|
||
{ "dfn", 0 },
|
||
{ "option", 0, "\\fB", "\\fR" },
|
||
{ "example", 1, ".RS 2\n.nf\n" },
|
||
{ "smallexample", 1, ".RS 2\n.nf\n" },
|
||
{ "asis", 7 },
|
||
{ "anchor", 7 },
|
||
{ "cartouche", 1 },
|
||
{ "xref", 0, "see: [", "]" },
|
||
{ "pxref", 0, "see: [", "]" },
|
||
{ "uref", 0, "(\\fB", "\\fR)" },
|
||
{ "footnote",0, " ([", "])" },
|
||
{ "emph", 0, "\\fI", "\\fR" },
|
||
{ "w", 1 },
|
||
{ "c", 5 },
|
||
{ "opindex", 1 },
|
||
{ "cpindex", 1 },
|
||
{ "cindex", 1 },
|
||
{ "noindent", 0 },
|
||
{ "section", 1 },
|
||
{ "chapter", 1 },
|
||
{ "subsection", 6, "\n.SS " },
|
||
{ "chapheading", 0},
|
||
{ "item", 2, ".TP\n.B " },
|
||
{ "itemx", 2, ".TP\n.B " },
|
||
{ "table", 3 },
|
||
{ "itemize", 3 },
|
||
{ "bullet", 0, "* " },
|
||
{ "end", 4 },
|
||
{ "quotation",1, ".RS\n\\fB" },
|
||
{ NULL }
|
||
};
|
||
size_t n;
|
||
int i;
|
||
const char *s;
|
||
const char *lead_out = NULL;
|
||
int ignore_args = 0;
|
||
|
||
for (i=0; cmdtbl[i].name && strcmp (cmdtbl[i].name, command); i++)
|
||
;
|
||
if (cmdtbl[i].name)
|
||
{
|
||
s = cmdtbl[i].lead_in;
|
||
if (s)
|
||
fputs (s, fp);
|
||
lead_out = cmdtbl[i].lead_out;
|
||
switch (cmdtbl[i].what)
|
||
{
|
||
case 1: /* Throw away the entire line. */
|
||
s = memchr (rest, '\n', len);
|
||
return s? (s-rest)+1 : len;
|
||
case 2: /* Handle @item. */
|
||
break;
|
||
case 3: /* Handle table. */
|
||
if (++(*table_level) > 1)
|
||
fputs (".RS\n", fp);
|
||
/* Now throw away the entire line. */
|
||
s = memchr (rest, '\n', len);
|
||
return s? (s-rest)+1 : len;
|
||
break;
|
||
case 4: /* Handle end. */
|
||
for (s=rest, n=len; n && (*s == ' ' || *s == '\t'); s++, n--)
|
||
;
|
||
if (n >= 5 && !memcmp (s, "table", 5)
|
||
&& (!n || s[5] == ' ' || s[5] == '\t' || s[5] == '\n'))
|
||
{
|
||
if ((*table_level)-- > 1)
|
||
fputs (".RE\n", fp);
|
||
}
|
||
else if (n >= 7 && !memcmp (s, "example", 7)
|
||
&& (!n || s[7] == ' ' || s[7] == '\t' || s[7] == '\n'))
|
||
{
|
||
fputs (".fi\n.RE\n", fp);
|
||
}
|
||
else if (n >= 12 && !memcmp (s, "smallexample", 12)
|
||
&& (!n || s[12] == ' ' || s[12] == '\t' || s[12] == '\n'))
|
||
{
|
||
fputs (".fi\n.RE\n", fp);
|
||
}
|
||
else if (n >= 9 && !memcmp (s, "quotation", 9)
|
||
&& (!n || s[9] == ' ' || s[9] == '\t' || s[9] == '\n'))
|
||
{
|
||
fputs ("\\fR\n.RE\n", fp);
|
||
}
|
||
/* Now throw away the entire line. */
|
||
s = memchr (rest, '\n', len);
|
||
return s? (s-rest)+1 : len;
|
||
case 5: /* Handle special comments. */
|
||
for (s=rest, n=len; n && (*s == ' ' || *s == '\t'); s++, n--)
|
||
;
|
||
if (n >= 4 && !memcmp (s, "man:", 4))
|
||
{
|
||
for (s+=4, n-=4; n && *s != '\n'; n--, s++)
|
||
putc (*s, fp);
|
||
putc ('\n', fp);
|
||
}
|
||
/* Now throw away the entire line. */
|
||
s = memchr (rest, '\n', len);
|
||
return s? (s-rest)+1 : len;
|
||
case 6:
|
||
*eol_action = 1;
|
||
break;
|
||
case 7:
|
||
ignore_args = 1;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
macro_t m;
|
||
|
||
for (m = macrolist; m ; m = m->next)
|
||
if (!strcmp (m->name, command))
|
||
break;
|
||
if (m)
|
||
{
|
||
proc_texi_buffer (fp, m->value, strlen (m->value),
|
||
table_level, eol_action);
|
||
ignore_args = 1; /* Parameterized macros are not yet supported. */
|
||
}
|
||
else
|
||
inf ("texinfo command '%s' not supported (%.*s)", command,
|
||
((s = memchr (rest, '\n', len)), (s? (s-rest) : len)), rest);
|
||
}
|
||
|
||
if (*rest == '{')
|
||
{
|
||
/* Find matching closing brace. */
|
||
for (s=rest+1, n=1, i=1; i && *s && n < len; s++, n++)
|
||
if (*s == '{')
|
||
i++;
|
||
else if (*s == '}')
|
||
i--;
|
||
if (i)
|
||
{
|
||
err ("closing brace for command '%s' not found", command);
|
||
return len;
|
||
}
|
||
if (n > 2 && !ignore_args)
|
||
proc_texi_buffer (fp, rest+1, n-2, table_level, eol_action);
|
||
}
|
||
else
|
||
n = 0;
|
||
|
||
if (lead_out)
|
||
fputs (lead_out, fp);
|
||
|
||
return n;
|
||
}
|
||
|
||
|
||
|
||
/* Process the string LINE with LEN bytes of Texinfo content. */
|
||
static void
|
||
proc_texi_buffer (FILE *fp, const char *line, size_t len,
|
||
int *table_level, int *eol_action)
|
||
{
|
||
const char *s;
|
||
char cmdbuf[256];
|
||
int cmdidx = 0;
|
||
int in_cmd = 0;
|
||
size_t n;
|
||
|
||
for (s=line; *s && len; s++, len--)
|
||
{
|
||
if (in_cmd)
|
||
{
|
||
if (in_cmd == 1)
|
||
{
|
||
switch (*s)
|
||
{
|
||
case '@': case '{': case '}':
|
||
putc (*s, fp); in_cmd = 0;
|
||
break;
|
||
case ':': /* Not ending a sentence flag. */
|
||
in_cmd = 0;
|
||
break;
|
||
case '.': case '!': case '?': /* Ending a sentence. */
|
||
putc (*s, fp); in_cmd = 0;
|
||
break;
|
||
case ' ': case '\t': case '\n': /* Non collapsing spaces. */
|
||
putc (*s, fp); in_cmd = 0;
|
||
break;
|
||
default:
|
||
cmdidx = 0;
|
||
cmdbuf[cmdidx++] = *s;
|
||
in_cmd++;
|
||
break;
|
||
}
|
||
}
|
||
else if (*s == '{' || *s == ' ' || *s == '\t' || *s == '\n')
|
||
{
|
||
cmdbuf[cmdidx] = 0;
|
||
n = proc_texi_cmd (fp, cmdbuf, s, len, table_level, eol_action);
|
||
assert (n <= len);
|
||
s += n; len -= n;
|
||
s--; len++;
|
||
in_cmd = 0;
|
||
}
|
||
else if (cmdidx < sizeof cmdbuf -1)
|
||
cmdbuf[cmdidx++] = *s;
|
||
else
|
||
{
|
||
err ("texinfo command too long - ignored");
|
||
in_cmd = 0;
|
||
}
|
||
}
|
||
else if (*s == '@')
|
||
in_cmd = 1;
|
||
else if (*s == '\n')
|
||
{
|
||
switch (*eol_action)
|
||
{
|
||
case 1: /* Create a dummy paragraph. */
|
||
fputs ("\n\\ \n", fp);
|
||
break;
|
||
default:
|
||
putc (*s, fp);
|
||
}
|
||
*eol_action = 0;
|
||
}
|
||
else if (*s == '\\')
|
||
fputs ("\\\\", fp);
|
||
else
|
||
putc (*s, fp);
|
||
}
|
||
|
||
if (in_cmd > 1)
|
||
{
|
||
cmdbuf[cmdidx] = 0;
|
||
n = proc_texi_cmd (fp, cmdbuf, s, len, table_level, eol_action);
|
||
assert (n <= len);
|
||
s += n; len -= n;
|
||
s--; len++;
|
||
in_cmd = 0;
|
||
}
|
||
}
|
||
|
||
|
||
/* Do something with the Texinfo line LINE. */
|
||
static void
|
||
parse_texi_line (FILE *fp, const char *line, int *table_level)
|
||
{
|
||
int eol_action = 0;
|
||
|
||
/* A quick test whether there are any texinfo commands. */
|
||
if (!strchr (line, '@'))
|
||
{
|
||
fputs (line, fp);
|
||
putc ('\n', fp);
|
||
return;
|
||
}
|
||
proc_texi_buffer (fp, line, strlen (line), table_level, &eol_action);
|
||
putc ('\n', fp);
|
||
}
|
||
|
||
|
||
/* Write all the lines LINES to FP. */
|
||
static void
|
||
write_content (FILE *fp, line_buffer_t lines)
|
||
{
|
||
line_buffer_t line;
|
||
int table_level = 0;
|
||
|
||
for (line = lines; line; line = line->next)
|
||
{
|
||
if (line->verbatim)
|
||
{
|
||
fputs (line->line, fp);
|
||
putc ('\n', fp);
|
||
}
|
||
else
|
||
{
|
||
/* fputs ("TEXI---", fp); */
|
||
/* fputs (line->line, fp); */
|
||
/* fputs ("---\n", fp); */
|
||
parse_texi_line (fp, line->line, &table_level);
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
|
||
static int
|
||
is_standard_section (const char *name)
|
||
{
|
||
int i;
|
||
const char *s;
|
||
|
||
for (i=0; (s=standard_sections[i]); i++)
|
||
if (!strcmp (s, name))
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Finish a page; that is sort the data and write it out to the file. */
|
||
static void
|
||
finish_page (void)
|
||
{
|
||
FILE *fp;
|
||
section_buffer_t sect = NULL;
|
||
int idx;
|
||
const char *s;
|
||
int i;
|
||
|
||
if (!thepage.name)
|
||
return; /* No page active. */
|
||
|
||
if (verbose)
|
||
inf ("finishing page '%s'", thepage.name);
|
||
|
||
if (opt_select)
|
||
{
|
||
if (!strcmp (opt_select, thepage.name))
|
||
{
|
||
inf ("selected '%s'", thepage.name );
|
||
fp = stdout;
|
||
}
|
||
else
|
||
{
|
||
fp = fopen ( "/dev/null", "w" );
|
||
if (!fp)
|
||
die ("failed to open /dev/null: %s\n", strerror (errno));
|
||
}
|
||
}
|
||
else if (opt_store)
|
||
{
|
||
inf ("writing '%s'", thepage.name );
|
||
fp = fopen ( thepage.name, "w" );
|
||
if (!fp)
|
||
die ("failed to create '%s': %s\n", thepage.name, strerror (errno));
|
||
}
|
||
else
|
||
fp = stdout;
|
||
|
||
if (write_th (fp))
|
||
goto leave;
|
||
|
||
for (idx=0; (s=standard_sections[idx]); idx++)
|
||
{
|
||
for (i=0; i < thepage.n_sections; i++)
|
||
{
|
||
sect = thepage.sections + i;
|
||
if (sect->name && !strcmp (s, sect->name))
|
||
break;
|
||
}
|
||
if (i == thepage.n_sections)
|
||
sect = NULL;
|
||
|
||
if (sect)
|
||
{
|
||
fprintf (fp, ".SH %s\n", sect->name);
|
||
write_content (fp, sect->lines);
|
||
/* Now continue with all non standard sections directly
|
||
following this one. */
|
||
for (i++; i < thepage.n_sections; i++)
|
||
{
|
||
sect = thepage.sections + i;
|
||
if (sect->name && is_standard_section (sect->name))
|
||
break;
|
||
if (sect->name)
|
||
{
|
||
fprintf (fp, ".SH %s\n", sect->name);
|
||
write_content (fp, sect->lines);
|
||
}
|
||
}
|
||
|
||
}
|
||
}
|
||
|
||
|
||
leave:
|
||
if (fp != stdout)
|
||
fclose (fp);
|
||
free (thepage.name);
|
||
thepage.name = NULL;
|
||
/* FIXME: Cleanup the content. */
|
||
}
|
||
|
||
|
||
|
||
|
||
/* Parse one Texinfo file and create manpages according to the
|
||
embedded instructions. */
|
||
static void
|
||
parse_file (const char *fname, FILE *fp, char **section_name, int in_pause)
|
||
{
|
||
char *line;
|
||
int lnr = 0;
|
||
/* Fixme: The following state variables don't carry over to include
|
||
files. */
|
||
int skip_to_end = 0; /* Used to skip over menu entries. */
|
||
int skip_sect_line = 0; /* Skip after @mansect. */
|
||
int item_indent = 0; /* How far is the current @item indented. */
|
||
|
||
/* Helper to define a macro. */
|
||
char *macroname = NULL;
|
||
char *macrovalue = NULL;
|
||
size_t macrovaluesize = 0;
|
||
size_t macrovalueused = 0;
|
||
|
||
line = xmalloc (LINESIZE);
|
||
while (fgets (line, LINESIZE, fp))
|
||
{
|
||
size_t n = strlen (line);
|
||
int got_line = 0;
|
||
char *p, *pend;
|
||
|
||
lnr++;
|
||
if (!n || line[n-1] != '\n')
|
||
{
|
||
err ("%s:%d: trailing linefeed missing, line too long or "
|
||
"embedded Nul character", fname, lnr);
|
||
break;
|
||
}
|
||
line[--n] = 0;
|
||
|
||
/* Kludge to allow indentation of tables. */
|
||
for (p=line; *p == ' ' || *p == '\t'; p++)
|
||
;
|
||
if (*p)
|
||
{
|
||
if (*p == '@' && !strncmp (p+1, "item", 4))
|
||
item_indent = p - line; /* Set a new indent level. */
|
||
else if (p - line < item_indent)
|
||
item_indent = 0; /* Switch off indention. */
|
||
|
||
if (item_indent)
|
||
{
|
||
memmove (line, line+item_indent, n - item_indent + 1);
|
||
n -= item_indent;
|
||
}
|
||
}
|
||
|
||
|
||
if (*line == '@')
|
||
{
|
||
for (p=line+1, n=1; *p && *p != ' ' && *p != '\t'; p++)
|
||
n++;
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
}
|
||
else
|
||
p = line;
|
||
|
||
/* Take action on macro. */
|
||
if (macroname)
|
||
{
|
||
if (n == 4 && !memcmp (line, "@end", 4)
|
||
&& (line[4]==' '||line[4]=='\t'||!line[4])
|
||
&& !strncmp (p, "macro", 5)
|
||
&& (p[5]==' '||p[5]=='\t'||!p[5]))
|
||
{
|
||
if (macrovalueused)
|
||
macrovalue[--macrovalueused] = 0; /* Kill the last LF. */
|
||
macrovalue[macrovalueused] = 0; /* Terminate macro. */
|
||
macrovalue = xrealloc (macrovalue, macrovalueused+1);
|
||
|
||
set_macro (macroname, macrovalue);
|
||
macrovalue = NULL;
|
||
free (macroname);
|
||
macroname = NULL;
|
||
}
|
||
else
|
||
{
|
||
if (macrovalueused + strlen (line) + 2 >= macrovaluesize)
|
||
{
|
||
macrovaluesize += strlen (line) + 256;
|
||
macrovalue = xrealloc (macrovalue, macrovaluesize);
|
||
}
|
||
strcpy (macrovalue+macrovalueused, line);
|
||
macrovalueused += strlen (line);
|
||
macrovalue[macrovalueused++] = '\n';
|
||
}
|
||
continue;
|
||
}
|
||
|
||
|
||
if (n >= 5 && !memcmp (line, "@node", 5)
|
||
&& (line[5]==' '||line[5]=='\t'||!line[5]))
|
||
{
|
||
/* Completey ignore @node lines. */
|
||
continue;
|
||
}
|
||
|
||
|
||
if (skip_sect_line)
|
||
{
|
||
skip_sect_line = 0;
|
||
if (!strncmp (line, "@section", 8)
|
||
|| !strncmp (line, "@subsection", 11)
|
||
|| !strncmp (line, "@chapheading", 12))
|
||
continue;
|
||
}
|
||
|
||
/* We only parse lines we need and ignore the rest. There are a
|
||
few macros used to control this as well as one @ifset
|
||
command. Parts we know about are saved away into containers
|
||
separate for each section. */
|
||
|
||
/* First process ifset/ifclear commands. */
|
||
if (*line == '@')
|
||
{
|
||
if (n == 6 && !memcmp (line, "@ifset", 6)
|
||
&& (line[6]==' '||line[6]=='\t'))
|
||
{
|
||
for (p=line+7; *p == ' ' || *p == '\t'; p++)
|
||
;
|
||
if (!*p)
|
||
{
|
||
err ("%s:%d: name missing after \"@ifset\"", fname, lnr);
|
||
continue;
|
||
}
|
||
for (pend=p; *pend && *pend != ' ' && *pend != '\t'; pend++)
|
||
;
|
||
*pend = 0; /* Ignore rest of the line. */
|
||
push_condition (p, 1, fname, lnr);
|
||
continue;
|
||
}
|
||
else if (n == 8 && !memcmp (line, "@ifclear", 8)
|
||
&& (line[8]==' '||line[8]=='\t'))
|
||
{
|
||
for (p=line+9; *p == ' ' || *p == '\t'; p++)
|
||
;
|
||
if (!*p)
|
||
{
|
||
err ("%s:%d: name missing after \"@ifsclear\"", fname, lnr);
|
||
continue;
|
||
}
|
||
for (pend=p; *pend && *pend != ' ' && *pend != '\t'; pend++)
|
||
;
|
||
*pend = 0; /* Ignore rest of the line. */
|
||
push_condition (p, 0, fname, lnr);
|
||
continue;
|
||
}
|
||
else if (n == 4 && !memcmp (line, "@end", 4)
|
||
&& (line[4]==' '||line[4]=='\t')
|
||
&& !strncmp (p, "ifset", 5)
|
||
&& (p[5]==' '||p[5]=='\t'||!p[5]))
|
||
{
|
||
pop_condition (1, fname, lnr);
|
||
continue;
|
||
}
|
||
else if (n == 4 && !memcmp (line, "@end", 4)
|
||
&& (line[4]==' '||line[4]=='\t')
|
||
&& !strncmp (p, "ifclear", 7)
|
||
&& (p[7]==' '||p[7]=='\t'||!p[7]))
|
||
{
|
||
pop_condition (0, fname, lnr);
|
||
continue;
|
||
}
|
||
}
|
||
|
||
/* Take action on ifset/ifclear. */
|
||
if (!cond_is_active)
|
||
continue;
|
||
|
||
/* Process commands. */
|
||
if (*line == '@')
|
||
{
|
||
if (skip_to_end
|
||
&& n == 4 && !memcmp (line, "@end", 4)
|
||
&& (line[4]==' '||line[4]=='\t'||!line[4]))
|
||
{
|
||
skip_to_end = 0;
|
||
}
|
||
else if (cond_in_verbatim)
|
||
{
|
||
got_line = 1;
|
||
}
|
||
else if (n == 6 && !memcmp (line, "@macro", 6))
|
||
{
|
||
macroname = xstrdup (p);
|
||
macrovalue = xmalloc ((macrovaluesize = 1024));
|
||
macrovalueused = 0;
|
||
}
|
||
else if (n == 8 && !memcmp (line, "@manpage", 8))
|
||
{
|
||
free (*section_name);
|
||
*section_name = NULL;
|
||
finish_page ();
|
||
start_page (p);
|
||
in_pause = 0;
|
||
}
|
||
else if (n == 8 && !memcmp (line, "@mansect", 8))
|
||
{
|
||
if (!thepage.name)
|
||
err ("%s:%d: section outside of a man page", fname, lnr);
|
||
else
|
||
{
|
||
free (*section_name);
|
||
*section_name = ascii_strupr (xstrdup (p));
|
||
in_pause = 0;
|
||
skip_sect_line = 1;
|
||
}
|
||
}
|
||
else if (n == 9 && !memcmp (line, "@manpause", 9))
|
||
{
|
||
if (!*section_name)
|
||
err ("%s:%d: pausing outside of a man section", fname, lnr);
|
||
else if (in_pause)
|
||
err ("%s:%d: already pausing", fname, lnr);
|
||
else
|
||
in_pause = 1;
|
||
}
|
||
else if (n == 8 && !memcmp (line, "@mancont", 8))
|
||
{
|
||
if (!*section_name)
|
||
err ("%s:%d: continue outside of a man section", fname, lnr);
|
||
else if (!in_pause)
|
||
err ("%s:%d: continue while not pausing", fname, lnr);
|
||
else
|
||
in_pause = 0;
|
||
}
|
||
else if (n == 5 && !memcmp (line, "@menu", 5)
|
||
&& (line[5]==' '||line[5]=='\t'||!line[5]))
|
||
{
|
||
skip_to_end = 1;
|
||
}
|
||
else if (n == 8 && !memcmp (line, "@include", 8)
|
||
&& (line[8]==' '||line[8]=='\t'||!line[8]))
|
||
{
|
||
char *incname = xstrdup (p);
|
||
FILE *incfp = fopen (incname, "r");
|
||
|
||
if (!incfp && opt_include && *opt_include && *p != '/')
|
||
{
|
||
free (incname);
|
||
incname = xmalloc (strlen (opt_include) + 1
|
||
+ strlen (p) + 1);
|
||
strcpy (incname, opt_include);
|
||
if ( incname[strlen (incname)-1] != '/' )
|
||
strcat (incname, "/");
|
||
strcat (incname, p);
|
||
incfp = fopen (incname, "r");
|
||
}
|
||
|
||
if (!incfp)
|
||
err ("can't open include file '%s':%s",
|
||
incname, strerror (errno));
|
||
else
|
||
{
|
||
parse_file (incname, incfp, section_name, in_pause);
|
||
fclose (incfp);
|
||
}
|
||
free (incname);
|
||
}
|
||
else if (n == 4 && !memcmp (line, "@bye", 4)
|
||
&& (line[4]==' '||line[4]=='\t'||!line[4]))
|
||
{
|
||
break;
|
||
}
|
||
else if (!skip_to_end)
|
||
got_line = 1;
|
||
}
|
||
else if (!skip_to_end)
|
||
got_line = 1;
|
||
|
||
if (got_line && cond_in_verbatim)
|
||
add_content (*section_name, line, 1);
|
||
else if (got_line && thepage.name && *section_name && !in_pause)
|
||
add_content (*section_name, line, 0);
|
||
|
||
}
|
||
if (ferror (fp))
|
||
err ("%s:%d: read error: %s", fname, lnr, strerror (errno));
|
||
free (macroname);
|
||
free (macrovalue);
|
||
free (line);
|
||
}
|
||
|
||
|
||
static void
|
||
top_parse_file (const char *fname, FILE *fp)
|
||
{
|
||
char *section_name = NULL; /* Name of the current section or NULL
|
||
if not in a section. */
|
||
macro_t m;
|
||
|
||
while (macrolist)
|
||
{
|
||
macro_t next = macrolist->next;
|
||
free (macrolist->value);
|
||
free (macrolist);
|
||
macrolist = next;
|
||
}
|
||
for (m=predefinedmacrolist; m; m = m->next)
|
||
set_macro (m->name, xstrdup ("1"));
|
||
cond_is_active = 1;
|
||
cond_in_verbatim = 0;
|
||
|
||
parse_file (fname, fp, §ion_name, 0);
|
||
free (section_name);
|
||
finish_page ();
|
||
}
|
||
|
||
|
||
int
|
||
main (int argc, char **argv)
|
||
{
|
||
int last_argc = -1;
|
||
|
||
opt_source = "GNU";
|
||
opt_release = "";
|
||
|
||
/* Define default macros. The trick is that these macros are not
|
||
defined when using the actual texinfo renderer. */
|
||
add_predefined_macro ("isman");
|
||
add_predefined_macro ("manverb");
|
||
|
||
/* Option parsing. */
|
||
if (argc)
|
||
{
|
||
argc--; argv++;
|
||
}
|
||
while (argc && last_argc != argc )
|
||
{
|
||
last_argc = argc;
|
||
if (!strcmp (*argv, "--"))
|
||
{
|
||
argc--; argv++;
|
||
break;
|
||
}
|
||
else if (!strcmp (*argv, "--help"))
|
||
{
|
||
puts (
|
||
"Usage: " PGM " [OPTION] [FILE]\n"
|
||
"Extract man pages from a Texinfo source.\n\n"
|
||
" --source NAME use NAME as source field\n"
|
||
" --release STRING use STRING as the release field\n"
|
||
" --store write output using @manpage name\n"
|
||
" --select NAME only output pages with @manpage NAME\n"
|
||
" --verbose enable extra informational output\n"
|
||
" --debug enable additional debug output\n"
|
||
" --help display this help and exit\n"
|
||
" -I DIR also search in include DIR\n"
|
||
" -D gpgone the only useable define\n\n"
|
||
"With no FILE, or when FILE is -, read standard input.\n\n"
|
||
"Report bugs to <bugs@g10code.com>.");
|
||
exit (0);
|
||
}
|
||
else if (!strcmp (*argv, "--version"))
|
||
{
|
||
puts (PGM " " VERSION "\n"
|
||
"Copyright (C) 2005 g10 Code GmbH\n"
|
||
"This program comes with ABSOLUTELY NO WARRANTY.\n"
|
||
"This is free software, and you are welcome to redistribute it\n"
|
||
"under certain conditions. See the file COPYING for details.");
|
||
exit (0);
|
||
}
|
||
else if (!strcmp (*argv, "--verbose"))
|
||
{
|
||
verbose = 1;
|
||
argc--; argv++;
|
||
}
|
||
else if (!strcmp (*argv, "--quiet"))
|
||
{
|
||
quiet = 1;
|
||
argc--; argv++;
|
||
}
|
||
else if (!strcmp (*argv, "--debug"))
|
||
{
|
||
verbose = debug = 1;
|
||
argc--; argv++;
|
||
}
|
||
else if (!strcmp (*argv, "--source"))
|
||
{
|
||
argc--; argv++;
|
||
if (argc)
|
||
{
|
||
opt_source = *argv;
|
||
argc--; argv++;
|
||
}
|
||
}
|
||
else if (!strcmp (*argv, "--release"))
|
||
{
|
||
argc--; argv++;
|
||
if (argc)
|
||
{
|
||
opt_release = *argv;
|
||
argc--; argv++;
|
||
}
|
||
}
|
||
else if (!strcmp (*argv, "--store"))
|
||
{
|
||
opt_store = 1;
|
||
argc--; argv++;
|
||
}
|
||
else if (!strcmp (*argv, "--select"))
|
||
{
|
||
argc--; argv++;
|
||
if (argc)
|
||
{
|
||
opt_select = strrchr (*argv, '/');
|
||
if (opt_select)
|
||
opt_select++;
|
||
else
|
||
opt_select = *argv;
|
||
argc--; argv++;
|
||
}
|
||
}
|
||
else if (!strcmp (*argv, "-I"))
|
||
{
|
||
argc--; argv++;
|
||
if (argc)
|
||
{
|
||
opt_include = *argv;
|
||
argc--; argv++;
|
||
}
|
||
}
|
||
else if (!strcmp (*argv, "-D"))
|
||
{
|
||
argc--; argv++;
|
||
if (argc)
|
||
{
|
||
add_predefined_macro (*argv);
|
||
argc--; argv++;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (argc > 1)
|
||
die ("usage: " PGM " [OPTION] [FILE] (try --help for more information)\n");
|
||
|
||
/* Start processing. */
|
||
if (argc && strcmp (*argv, "-"))
|
||
{
|
||
FILE *fp = fopen (*argv, "rb");
|
||
if (!fp)
|
||
die ("%s:0: can't open file: %s", *argv, strerror (errno));
|
||
top_parse_file (*argv, fp);
|
||
fclose (fp);
|
||
}
|
||
else
|
||
top_parse_file ("-", stdin);
|
||
|
||
return !!any_error;
|
||
}
|
||
|
||
|
||
/*
|
||
Local Variables:
|
||
compile-command: "gcc -Wall -g -Wall -o yat2m yat2m.c"
|
||
End:
|
||
*/
|