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Import of GNU patch version 2.4.

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This commit is contained in:
Steve Price 1997-06-29 06:55:02 +00:00
commit 511633a2fe
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/vendor/patch/dist/; revision=27044
svn path=/vendor/patch/2.4/; revision=27046; tag=vendor/misc-GNU/patch/2.4
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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) 19yy <name of author>
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 of the License, 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.
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along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) 19yy name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.

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Known problems:
* The diffutils 2.7 documentation for `patch' is obsolete; this should be
fixed in diffutils 2.8. Until then, see `patch --help' or `man patch'.
Change in version 2.4:
* New options:
-Z or --set-utc sets times of patched files, assuming diff uses UTC (GMT).
-T or --set-time is similar, assuming local time (not recommended).
--backup-if-mismatch makes a backup if the patch does not match exactly
--no-backup-if-mismatch makes a backup only if otherwise requested
* The default is now --backup-if-mismatch unless POSIXLY_CORRECT is set.
* The -B or --prefix, -Y or --basename-prefix, and -z or --suffix options
no longer affect whether backups are made (as they did in patch 2.2 and 2.3);
they now merely specify the file names used when simple backups are made.
* When patching a nonexistent file and making backups, an empty backup file
is now made (just as with traditional patch); but the backup file is
unreadable, as a way of indicating that it represents a nonexistent file.
* `patch' now matches against empty and nonexistent files more generously.
A patch against an empty file applies to a nonexistent file, and vice versa.
* -g or --get and PATCH_GET now have a numeric value that specifies
whether `patch' is getting files.
If the value is positive, working files are gotten from RCS or SCCS files;
if zero, `patch' ignores RCS and SCCS and working files are not gotten;
and if negative, `patch' asks the user whether to get each file.
The default is normally negative, but it is zero if POSIXLY_CORRECT is set.
* The -G or --no-get option introduced in GNU patch 2.3 has been removed;
use -g0 instead.
* The method used to intuit names of files to be patched is changed again:
`Index:' lines are normally ignored for context diffs,
and RCS and SCCS files are normally looked for when files do not exist.
The complete new method is described in the man page.
* By default, `patch' is now more verbose when patches do not match exactly.
* The manual page has a new COMPATIBILITY ISSUES section.
Changes in version 2.3:
* Unless the POSIXLY_CORRECT environment variable is set:
- `patch' now distinguishes more accurately between empty and
nonexistent files if the input is a context diff.
A file is assumed to not exist if its context diff header
suggests that it is empty, and if the header timestamp
looks like it might be equivalent to 1970-01-01 00:00:00 UTC.
- Files that ``become nonexistent'' after patching are now removed.
When a file is removed, any empty ancestor directories are also removed.
* Files are now automatically gotten from RCS and SCCS
if the -g or --get option is specified.
(The -G or --no-get option, also introduced in 2.3, was withdrawn in 2.4.)
* If the PATCH_VERSION_CONTROL environment variable is set,
it overrides the VERSION_CONTROL environment variable.
* The method used to intuit names of files to be patched is changed.
(It was further revised in 2.4; see above.)
* The new --binary option makes `patch' read and write files in binary mode.
This option has no effect on POSIX-compliant hosts;
it is useful only in on operating systems like DOS
that distinguish between text and binary I/O.
* The environment variables TMP and TEMP are consulted for the name of
the temporary directory if TMPDIR is not set.
* A port to MS-DOS and MS-Windows is available; see the `pc' directory.
* Backup file names are no longer ever computed by uppercasing characters,
since this isn't portable to systems with case-insensitive file names.
Changes in version 2.2:
* Arbitrary limits removed (e.g. line length, file name length).
* On POSIX.1-compliant hosts, you can now patch binary files using the output
of GNU `diff -a'.
* New options:
--dry-run
--help
--verbose
-i FILE or --input=FILE
-y PREF or --basename-prefix=PREF
* patch is now quieter by default; use --verbose for the old chatty behavior.
* Patch now complies better with POSIX.2 if your host complies with POSIX.1.
Therefore:
- By default, no backups are made.
(But this was changed again in patch 2.4; see above.)
- The simple backup file name for F defaults to F.orig
regardless of whether the file system supports long file names,
and F~ is used only if F.orig is too long for that particular file.
- Similarly for the reject file names F.rej and F#.
Also:
- The pseudo-option `+' has been withdrawn.
- -b is equivalent to --version-control=simple;
`-z SUFF' has the meaning that `-b SUFF' used to.
- Names of files to be patched are taken first from *** line and then from
--- line of context diffs; then from Index: line; /dev/tty is
consulted if none of the above files exist. However, if the patch
appears to create a file, the file does not have to exist: instead,
the first name with the longest existing directory prefix is taken.
(These rules were changed again in patch 2.3 and 2.4; see above.)
- Exit status 0 means success, 1 means hunks were rejected, 2 means trouble.
- `-l' ignores changes only in spaces and tabs, not in other white space.
- If no `-p' option is given, `-pINFINITY' is assumed, instead of trying
to guess the proper value.
- `-p' now requires an operand; use `-p 0' to get the effect of the old plain
`-p' option.
- `-p' treats two or more adjacent slashes as if it were one slash.
- The TERM signal is caught.
- New option `-i F' reads patch from F instead of stdin.
* The `patch' options and build procedure conform to current GNU standards.
For example, the `--version' option now outputs copyright information.
* When the patch is creating a file, but a nonempty file of that name already
exists, `patch' now asks for confirmation before patching.
* RCS is used only if the version control method is `existing'
and there is already an RCS file. Similarly for SCCS.
(But this was changed again in patch 2.3 and 2.4; see above.)
* Copyright notices have been clarified. Every file in this version of `patch'
can be distributed under the GNU General Public License. See README for
details.
Changes in version 2.1:
* A few more portability bugs have been fixed. The version number has
been changed from 2.0.12g11 to 2.1, because the name
`patch-2.0.12g10' was too long for traditional Unix file systems.
Versions 2.0.12g9 through 2.0.12g11 fix various portability bugs.
Changes in version 2.0.12g8:
* Start of the 12g series, with a GNU-style configure script and
long-named options.
* Added the -t --batch option, similar to -f.
* Improved detection of files that are locked under RCS or SCCS.
* Reinstate the -E option to remove output files that are empty after
being patched.
* Print the system error message when system calls fail.
* Fixed various bugs and portability problems.

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This version of `patch' has many changes made by the Free Software Foundation.
They add support for:
* handling arbitrary binary data and large files
* the unified context diff format that GNU diff can produce
* making GNU Emacs-style backup files
* improved interaction with RCS and SCCS
* the GNU conventions for option parsing and configuring and compilation.
* better POSIX.2 compliance
They also fix some bugs. See the NEWS and ChangeLog files for details.
Tutorial-style documentation for patch is included in the GNU
diffutils package. Unfortunately, the diffutils 2.7 documentation
for `patch' is obsolete; this should be fixed in diffutils 2.8.
In the mean time, see `patch --help', or consult the man page
in this distribution.
For GNU and Unix build and installation instructions, see the file INSTALL.
For MS-DOS using DJGPP tools, see the file pc/djgpp/README.
For other systems, copy config.hin to config.h and change
#undef statements in it to #define as appropriate for your system,
and copy Makefile.in to Makefile and set the variables that are
enclosed in @ signs as appropriate for your system.
Please send bug reports for this version of patch to
bug-gnu-utils@prep.ai.mit.edu.
The Free Software Foundation is distributing this version of patch
independently because as of this writing, Larry Wall has not released a
new version of patch since mid-1988. We have heard that he has been
too busy working on other things, like Perl. He has graciously agreed
to let GNU `patch' be distributed under the terms of the GNU General
Public License.
------
Copyright 1984, 1985, 1986, 1987, 1988 Larry Wall
Copyright 1989, 1990, 1991, 1992, 1993, 1997 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 file; see the file COPYING.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

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/* Local acconfig.h for autoheader.
Descriptive text for the C preprocessor macros that
the patch configure.in can define.
autoheader copies the comments into config.hin. */
/* Define if there is a member named d_ino in the struct describing
directory headers. */
#undef D_INO_IN_DIRENT
/* Define if memchr works. */
#undef HAVE_MEMCHR
/* Define if `struct utimbuf' is declared -- usually in <utime.h>. */
#undef HAVE_STRUCT_UTIMBUF

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/* addext.c -- add an extension to a file name
Copyright (C) 1990, 1997 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; see the file COPYING.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Written by David MacKenzie <djm@gnu.ai.mit.edu> and Paul Eggert */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#ifndef HAVE_DOS_FILE_NAMES
#define HAVE_DOS_FILE_NAMES 0
#endif
#ifndef HAVE_LONG_FILE_NAMES
#define HAVE_LONG_FILE_NAMES 0
#endif
#include <backupfile.h>
#if HAVE_LIMITS_H
# include <limits.h>
#endif
#ifndef _POSIX_NAME_MAX
#define _POSIX_NAME_MAX 14
#endif
#include <sys/types.h>
#if HAVE_STRING_H
# include <string.h>
#else
# include <strings.h>
#endif
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
/* Append to FILENAME the extension EXT, unless the result would be too long,
in which case just append the character E. */
void
addext (filename, ext, e)
char *filename;
char const *ext;
int e;
{
char *s = base_name (filename);
size_t slen = strlen (s), extlen = strlen (ext);
long slen_max = -1;
#if HAVE_PATHCONF && defined _PC_NAME_MAX
if (slen + extlen <= _POSIX_NAME_MAX && ! HAVE_DOS_FILE_NAMES)
/* The file name is so short there's no need to call pathconf. */
slen_max = _POSIX_NAME_MAX;
else if (s == filename)
slen_max = pathconf (".", _PC_NAME_MAX);
else
{
char c = *s;
*s = 0;
slen_max = pathconf (filename, _PC_NAME_MAX);
*s = c;
}
#endif
if (slen_max < 0)
slen_max = HAVE_LONG_FILE_NAMES ? 255 : 14;
if (HAVE_DOS_FILE_NAMES && slen_max <= 12)
{
/* Live within DOS's 8.3 limit. */
char *dot = strchr (s, '.');
if (dot)
{
slen -= dot + 1 - s;
s = dot + 1;
slen_max = 3;
}
else
slen_max = 8;
extlen = 9; /* Don't use EXT. */
}
if (slen + extlen <= slen_max)
strcpy (s + slen, ext);
else
{
if (slen_max <= slen)
slen = slen_max - 1;
s[slen] = e;
s[slen + 1] = 0;
}
}

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/* argmatch.c -- find a match for a string in an array
Copyright (C) 1990, 1997 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; see the file COPYING.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Written by David MacKenzie <djm@gnu.ai.mit.edu> */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <argmatch.h>
#include <sys/types.h>
#include <stdio.h>
#if HAVE_STRING_H
# include <string.h>
#else
# include <strings.h>
#endif
/* If ARG is an unambiguous match for an element of the
null-terminated array OPTLIST, return the index in OPTLIST
of the matched element, else -1 if it does not match any element
or -2 if it is ambiguous (is a prefix of more than one element). */
int
argmatch (arg, optlist)
const char *arg;
const char *const *optlist;
{
int i; /* Temporary index in OPTLIST. */
size_t arglen; /* Length of ARG. */
int matchind = -1; /* Index of first nonexact match. */
int ambiguous = 0; /* If nonzero, multiple nonexact match(es). */
arglen = strlen (arg);
/* Test all elements for either exact match or abbreviated matches. */
for (i = 0; optlist[i]; i++)
{
if (!strncmp (optlist[i], arg, arglen))
{
if (strlen (optlist[i]) == arglen)
/* Exact match found. */
return i;
else if (matchind == -1)
/* First nonexact match found. */
matchind = i;
else
/* Second nonexact match found. */
ambiguous = 1;
}
}
if (ambiguous)
return -2;
else
return matchind;
}
/* Error reporting for argmatch.
KIND is a description of the type of entity that was being matched.
VALUE is the invalid value that was given.
PROBLEM is the return value from argmatch. */
void
invalid_arg (kind, value, problem)
const char *kind;
const char *value;
int problem;
{
fprintf (stderr, "%s: ", program_name);
if (problem == -1)
fprintf (stderr, "invalid");
else /* Assume -2. */
fprintf (stderr, "ambiguous");
fprintf (stderr, " %s `%s'\n", kind, value);
}

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/* argmatch.h -- declarations for matching arguments against option lists */
#if defined __STDC__ || __GNUC__
# define __ARGMATCH_P(args) args
#else
# define __ARGMATCH_P(args) ()
#endif
int argmatch __ARGMATCH_P ((const char *, const char * const *));
void invalid_arg __ARGMATCH_P ((const char *, const char *, int));
extern char const program_name[];

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/* backupfile.c -- make Emacs style backup file names
Copyright (C) 1990,1991,1992,1993,1995,1997 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; see the file COPYING.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Written by David MacKenzie <djm@gnu.ai.mit.edu>.
Some algorithms adapted from GNU Emacs. */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <argmatch.h>
#include <backupfile.h>
#include <stdio.h>
#include <sys/types.h>
#if HAVE_STRING_H
# include <string.h>
#else
# include <strings.h>
#endif
#if HAVE_DIRENT_H
# include <dirent.h>
# define NLENGTH(direct) strlen ((direct)->d_name)
#else
# define dirent direct
# define NLENGTH(direct) ((size_t) (direct)->d_namlen)
# if HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
# if HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif
# if HAVE_NDIR_H
# include <ndir.h>
# endif
#endif
#if CLOSEDIR_VOID
/* Fake a return value. */
# define CLOSEDIR(d) (closedir (d), 0)
#else
# define CLOSEDIR(d) closedir (d)
#endif
#if STDC_HEADERS
# include <stdlib.h>
#else
char *malloc ();
#endif
#if HAVE_DIRENT_H || HAVE_NDIR_H || HAVE_SYS_DIR_H || HAVE_SYS_NDIR_H
# define HAVE_DIR 1
#else
# define HAVE_DIR 0
#endif
#if HAVE_LIMITS_H
# include <limits.h>
#endif
#ifndef CHAR_BIT
#define CHAR_BIT 8
#endif
/* Upper bound on the string length of an integer converted to string.
302 / 1000 is ceil (log10 (2.0)). Subtract 1 for the sign bit;
add 1 for integer division truncation; add 1 more for a minus sign. */
#define INT_STRLEN_BOUND(t) ((sizeof (t) * CHAR_BIT - 1) * 302 / 1000 + 2)
/* ISDIGIT differs from isdigit, as follows:
- Its arg may be any int or unsigned int; it need not be an unsigned char.
- It's guaranteed to evaluate its argument exactly once.
- It's typically faster.
Posix 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
only '0' through '9' are digits. Prefer ISDIGIT to isdigit unless
it's important to use the locale's definition of `digit' even when the
host does not conform to Posix. */
#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
#if D_INO_IN_DIRENT
# define REAL_DIR_ENTRY(dp) ((dp)->d_ino != 0)
#else
# define REAL_DIR_ENTRY(dp) 1
#endif
/* Which type of backup file names are generated. */
enum backup_type backup_type = none;
/* The extension added to file names to produce a simple (as opposed
to numbered) backup file name. */
const char *simple_backup_suffix = ".orig";
static int max_backup_version __BACKUPFILE_P ((const char *, const char *));
static int version_number __BACKUPFILE_P ((const char *, const char *, size_t));
/* Return the name of the new backup file for file FILE,
allocated with malloc. Return 0 if out of memory.
FILE must not end with a '/' unless it is the root directory. */
char *
find_backup_file_name (file)
const char *file;
{
size_t backup_suffix_size_max;
size_t file_len = strlen (file);
size_t numbered_suffix_size_max = INT_STRLEN_BOUND (int) + 4;
char *s;
const char *suffix = simple_backup_suffix;
/* Allow room for simple or `.~N~' backups. */
backup_suffix_size_max = strlen (simple_backup_suffix) + 1;
if (HAVE_DIR && backup_suffix_size_max < numbered_suffix_size_max)
backup_suffix_size_max = numbered_suffix_size_max;
s = malloc (file_len + backup_suffix_size_max + numbered_suffix_size_max);
if (s)
{
strcpy (s, file);
#if HAVE_DIR
if (backup_type != simple && backup_type != none)
{
int highest_backup;
size_t dir_len = base_name (s) - s;
strcpy (s + dir_len, ".");
highest_backup = max_backup_version (file + dir_len, s);
if (! (backup_type == numbered_existing && highest_backup == 0))
{
char *numbered_suffix = s + (file_len + backup_suffix_size_max);
sprintf (numbered_suffix, ".~%d~", highest_backup + 1);
suffix = numbered_suffix;
}
strcpy (s, file);
}
#endif /* HAVE_DIR */
addext (s, suffix, '~');
}
return s;
}
#if HAVE_DIR
/* Return the number of the highest-numbered backup file for file
FILE in directory DIR. If there are no numbered backups
of FILE in DIR, or an error occurs reading DIR, return 0.
*/
static int
max_backup_version (file, dir)
const char *file;
const char *dir;
{
DIR *dirp;
struct dirent *dp;
int highest_version;
int this_version;
size_t file_name_length;
dirp = opendir (dir);
if (!dirp)
return 0;
highest_version = 0;
file_name_length = strlen (file);
while ((dp = readdir (dirp)) != 0)
{
if (!REAL_DIR_ENTRY (dp) || NLENGTH (dp) < file_name_length + 4)
continue;
this_version = version_number (file, dp->d_name, file_name_length);
if (this_version > highest_version)
highest_version = this_version;
}
if (CLOSEDIR (dirp))
return 0;
return highest_version;
}
/* If BACKUP is a numbered backup of BASE, return its version number;
otherwise return 0. BASE_LENGTH is the length of BASE.
*/
static int
version_number (base, backup, base_length)
const char *base;
const char *backup;
size_t base_length;
{
int version;
const char *p;
version = 0;
if (strncmp (base, backup, base_length) == 0
&& backup[base_length] == '.'
&& backup[base_length + 1] == '~')
{
for (p = &backup[base_length + 2]; ISDIGIT (*p); ++p)
version = version * 10 + *p - '0';
if (p[0] != '~' || p[1])
version = 0;
}
return version;
}
#endif /* HAVE_DIR */
static const char * const backup_args[] =
{
"never", "simple", "nil", "existing", "t", "numbered", 0
};
static const enum backup_type backup_types[] =
{
simple, simple, numbered_existing, numbered_existing, numbered, numbered
};
/* Return the type of backup indicated by VERSION.
Unique abbreviations are accepted. */
enum backup_type
get_version (version)
const char *version;
{
int i;
if (version == 0 || *version == 0)
return numbered_existing;
i = argmatch (version, backup_args);
if (i < 0)
{
invalid_arg ("version control type", version, i);
exit (2);
}
return backup_types[i];
}

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/* backupfile.h -- declarations for making Emacs style backup file names
Copyright (C) 1990, 1991, 1992, 1997 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; see the file COPYING.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* When to make backup files. */
enum backup_type
{
/* Never make backups. */
none,
/* Make simple backups of every file. */
simple,
/* Make numbered backups of files that already have numbered backups,
and simple backups of the others. */
numbered_existing,
/* Make numbered backups of every file. */
numbered
};
extern enum backup_type backup_type;
extern char const *simple_backup_suffix;
#ifndef __BACKUPFILE_P
# if defined __STDC__ || __GNUC__
# define __BACKUPFILE_P(args) args
# else
# define __BACKUPFILE_P(args) ()
# endif
#endif
char *base_name __BACKUPFILE_P ((char const *));
char *find_backup_file_name __BACKUPFILE_P ((char const *));
enum backup_type get_version __BACKUPFILE_P ((char const *));
void addext __BACKUPFILE_P ((char *, char const *, int));

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/* basename.c -- return the last element in a path */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <backupfile.h>
#ifndef FILESYSTEM_PREFIX_LEN
#define FILESYSTEM_PREFIX_LEN(f) 0
#endif
#ifndef ISSLASH
#define ISSLASH(c) ((c) == '/')
#endif
/* In general, we can't use the builtin `basename' function if available,
since it has different meanings in different environments.
In some environments the builtin `basename' modifies its argument. */
char *
base_name (name)
char const *name;
{
char const *base = name += FILESYSTEM_PREFIX_LEN (name);
for (; *name; name++)
if (ISSLASH (*name))
base = name + 1;
return (char *) base;
}

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/* common definitions for `patch' */
/* $Id: common.h,v 1.18 1997/06/13 06:28:37 eggert Exp $ */
/*
Copyright 1986, 1988 Larry Wall
Copyright 1990, 1991, 1992, 1993, 1997 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; see the file COPYING.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef DEBUGGING
#define DEBUGGING 1
#endif
/* We must define `volatile' and `const' first (the latter inside config.h),
so that they're used consistently in all system includes. */
#ifndef __STDC__
# ifndef volatile
# define volatile
# endif
#endif
/* Enable support for fseeko and ftello on hosts
where it is available but is turned off by default.
This must be defined before any system file is included. */
#define _LARGEFILE_SOURCE 1
#include <config.h>
#include <assert.h>
#include <stdio.h>
#include <sys/types.h>
#include <time.h>
#include <sys/stat.h>
#if ! defined S_ISDIR && defined S_IFDIR
# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#endif
#if ! defined S_ISREG && defined S_IFREG
# define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
#endif
#ifndef S_IXOTH
#define S_IXOTH 1
#endif
#ifndef S_IWOTH
#define S_IWOTH 2
#endif
#ifndef S_IROTH
#define S_IROTH 4
#endif
#ifndef S_IXGRP
#define S_IXGRP (S_IXOTH << 3)
#endif
#ifndef S_IWGRP
#define S_IWGRP (S_IWOTH << 3)
#endif
#ifndef S_IRGRP
#define S_IRGRP (S_IROTH << 3)
#endif
#ifndef S_IXUSR
#define S_IXUSR (S_IXOTH << 6)
#endif
#ifndef S_IWUSR
#define S_IWUSR (S_IWOTH << 6)
#endif
#ifndef S_IRUSR
#define S_IRUSR (S_IROTH << 6)
#endif
#if HAVE_LIMITS_H
# include <limits.h>
#endif
#ifndef INT_MAX
#define INT_MAX 2147483647
#endif
#ifndef LONG_MIN
#define LONG_MIN (-1-2147483647L)
#endif
#include <ctype.h>
/* CTYPE_DOMAIN (C) is nonzero if the unsigned char C can safely be given
as an argument to <ctype.h> macros like `isspace'. */
#if STDC_HEADERS
#define CTYPE_DOMAIN(c) 1
#else
#define CTYPE_DOMAIN(c) ((unsigned) (c) <= 0177)
#endif
#ifndef ISSPACE
#define ISSPACE(c) (CTYPE_DOMAIN (c) && isspace (c))
#endif
#ifndef ISDIGIT
#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
#endif
#ifndef FILESYSTEM_PREFIX_LEN
#define FILESYSTEM_PREFIX_LEN(f) 0
#endif
#ifndef ISSLASH
#define ISSLASH(c) ((c) == '/')
#endif
/* constants */
/* AIX predefines these. */
#ifdef TRUE
#undef TRUE
#endif
#ifdef FALSE
#undef FALSE
#endif
#define TRUE 1
#define FALSE 0
/* handy definitions */
#define strEQ(s1,s2) (!strcmp(s1, s2))
#define strnEQ(s1,s2,l) (!strncmp(s1, s2, l))
/* typedefs */
typedef int bool; /* must promote to itself */
typedef long LINENUM; /* must be signed */
/* globals */
extern char const program_name[];
XTERN char *buf; /* general purpose buffer */
XTERN size_t bufsize; /* allocated size of buf */
XTERN bool using_plan_a; /* try to keep everything in memory */
XTERN char *inname;
XTERN char *outfile;
XTERN int inerrno;
XTERN int invc;
XTERN struct stat instat;
XTERN bool dry_run;
XTERN bool posixly_correct;
XTERN char const *origprae;
XTERN char const *origbase;
XTERN char const * volatile TMPOUTNAME;
XTERN char const * volatile TMPINNAME;
XTERN char const * volatile TMPPATNAME;
#ifdef DEBUGGING
XTERN int debug;
#else
# define debug 0
#endif
XTERN bool force;
XTERN bool batch;
XTERN bool noreverse;
XTERN int reverse;
XTERN enum { DEFAULT_VERBOSITY, SILENT, VERBOSE } verbosity;
XTERN bool skip_rest_of_patch;
XTERN int strippath;
XTERN bool canonicalize;
XTERN int patch_get;
XTERN int set_time;
XTERN int set_utc;
enum diff
{
NO_DIFF,
CONTEXT_DIFF,
NORMAL_DIFF,
ED_DIFF,
NEW_CONTEXT_DIFF,
UNI_DIFF
};
XTERN enum diff diff_type;
XTERN char *revision; /* prerequisite revision, if any */
#ifdef __STDC__
# define GENERIC_OBJECT void
#else
# define GENERIC_OBJECT char
#endif
#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6) || __STRICT_ANSI__
# define __attribute__(x)
#endif
#ifndef PARAMS
# ifdef __STDC__
# define PARAMS(args) args
# else
# define PARAMS(args) ()
# endif
#endif
GENERIC_OBJECT *xmalloc PARAMS ((size_t));
void fatal_exit PARAMS ((int)) __attribute__ ((noreturn));
#include <errno.h>
#if !STDC_HEADERS && !defined errno
extern int errno;
#endif
#if STDC_HEADERS || HAVE_STRING_H
# include <string.h>
#else
# if !HAVE_MEMCHR
# define memcmp(s1, s2, n) bcmp (s1, s2, n)
# define memcpy(d, s, n) bcopy (s, d, n)
GENERIC_OBJECT *memchr ();
# endif
#endif
#if STDC_HEADERS
# include <stdlib.h>
#else
long atol ();
char *getenv ();
GENERIC_OBJECT *malloc ();
GENERIC_OBJECT *realloc ();
#endif
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifndef lseek
off_t lseek ();
#endif
#ifndef SEEK_SET
#define SEEK_SET 0
#endif
#ifndef STDIN_FILENO
#define STDIN_FILENO 0
#endif
#ifndef STDOUT_FILENO
#define STDOUT_FILENO 1
#endif
#ifndef STDERR_FILENO
#define STDERR_FILENO 2
#endif
#if _LFS_LARGEFILE
typedef off_t file_offset;
# define file_seek fseeko
# define file_tell ftello
#else
typedef long file_offset;
# define file_seek fseek
# define file_tell ftell
#endif
#if HAVE_FCNTL_H
# include <fcntl.h>
#endif
#ifndef O_RDONLY
#define O_RDONLY 0
#endif
#ifndef O_WRONLY
#define O_WRONLY 1
#endif
#ifndef O_RDWR
#define O_RDWR 2
#endif
#ifndef _O_BINARY
#define _O_BINARY 0
#endif
#ifndef O_BINARY
#define O_BINARY _O_BINARY
#endif
#ifndef O_CREAT
#define O_CREAT 0
#endif
#ifndef O_TRUNC
#define O_TRUNC 0
#endif
#if HAVE_SETMODE
XTERN int binary_transput; /* O_BINARY if binary i/o is desired */
#else
# define binary_transput 0
#endif
#ifndef NULL_DEVICE
#define NULL_DEVICE "/dev/null"
#endif
#ifndef TTY_DEVICE
#define TTY_DEVICE "/dev/tty"
#endif

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/* Declarations for getopt.
Copyright (C) 1989,90,91,92,93,94,96,97 Free Software Foundation, Inc.
NOTE: The canonical source of this file is maintained with the GNU C Library.
Bugs can be reported to bug-glibc@prep.ai.mit.edu.
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. */
#ifndef _GETOPT_H
#define _GETOPT_H 1
#ifdef __cplusplus
extern "C" {
#endif
/* For communication from `getopt' to the caller.
When `getopt' finds an option that takes an argument,
the argument value is returned here.
Also, when `ordering' is RETURN_IN_ORDER,
each non-option ARGV-element is returned here. */
extern char *optarg;
/* Index in ARGV of the next element to be scanned.
This is used for communication to and from the caller
and for communication between successive calls to `getopt'.
On entry to `getopt', zero means this is the first call; initialize.
When `getopt' returns -1, this is the index of the first of the
non-option elements that the caller should itself scan.
Otherwise, `optind' communicates from one call to the next
how much of ARGV has been scanned so far. */
extern int optind;
/* Callers store zero here to inhibit the error message `getopt' prints
for unrecognized options. */
extern int opterr;
/* Set to an option character which was unrecognized. */
extern int optopt;
/* Describe the long-named options requested by the application.
The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
of `struct option' terminated by an element containing a name which is
zero.
The field `has_arg' is:
no_argument (or 0) if the option does not take an argument,
required_argument (or 1) if the option requires an argument,
optional_argument (or 2) if the option takes an optional argument.
If the field `flag' is not NULL, it points to a variable that is set
to the value given in the field `val' when the option is found, but
left unchanged if the option is not found.
To have a long-named option do something other than set an `int' to
a compiled-in constant, such as set a value from `optarg', set the
option's `flag' field to zero and its `val' field to a nonzero
value (the equivalent single-letter option character, if there is
one). For long options that have a zero `flag' field, `getopt'
returns the contents of the `val' field. */
struct option
{
#if defined (__STDC__) && __STDC__
const char *name;
#else
char *name;
#endif
/* has_arg can't be an enum because some compilers complain about
type mismatches in all the code that assumes it is an int. */
int has_arg;
int *flag;
int val;
};
/* Names for the values of the `has_arg' field of `struct option'. */
#define no_argument 0
#define required_argument 1
#define optional_argument 2
#if defined (__STDC__) && __STDC__
#ifdef __GNU_LIBRARY__
/* Many other libraries have conflicting prototypes for getopt, with
differences in the consts, in stdlib.h. To avoid compilation
errors, only prototype getopt for the GNU C library. */
extern int getopt (int argc, char *const *argv, const char *shortopts);
#else /* not __GNU_LIBRARY__ */
extern int getopt ();
#endif /* __GNU_LIBRARY__ */
extern int getopt_long (int argc, char *const *argv, const char *shortopts,
const struct option *longopts, int *longind);
extern int getopt_long_only (int argc, char *const *argv,
const char *shortopts,
const struct option *longopts, int *longind);
/* Internal only. Users should not call this directly. */
extern int _getopt_internal (int argc, char *const *argv,
const char *shortopts,
const struct option *longopts, int *longind,
int long_only);
#else /* not __STDC__ */
extern int getopt ();
extern int getopt_long ();
extern int getopt_long_only ();
extern int _getopt_internal ();
#endif /* __STDC__ */
#ifdef __cplusplus
}
#endif
#endif /* _GETOPT_H */

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/* getopt_long and getopt_long_only entry points for GNU getopt.
Copyright (C) 1987,88,89,90,91,92,93,94,96,97 Free Software Foundation, Inc.
NOTE: The canonical source of this file is maintained with the GNU C Library.
Bugs can be reported to bug-glibc@prep.ai.mit.edu.
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. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "getopt.h"
#if !defined (__STDC__) || !__STDC__
/* This is a separate conditional since some stdc systems
reject `defined (const)'. */
#ifndef const
#define const
#endif
#endif
#include <stdio.h>
/* Comment out all this code if we are using the GNU C Library, and are not
actually compiling the library itself. This code is part of the GNU C
Library, but also included in many other GNU distributions. Compiling
and linking in this code is a waste when using the GNU C library
(especially if it is a shared library). Rather than having every GNU
program understand `configure --with-gnu-libc' and omit the object files,
it is simpler to just do this in the source for each such file. */
#define GETOPT_INTERFACE_VERSION 2
#if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2
#include <gnu-versions.h>
#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
#define ELIDE_CODE
#endif
#endif
#ifndef ELIDE_CODE
/* This needs to come after some library #include
to get __GNU_LIBRARY__ defined. */
#ifdef __GNU_LIBRARY__
#include <stdlib.h>
#endif
#ifndef NULL
#define NULL 0
#endif
int
getopt_long (argc, argv, options, long_options, opt_index)
int argc;
char *const *argv;
const char *options;
const struct option *long_options;
int *opt_index;
{
return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
}
/* Like getopt_long, but '-' as well as '--' can indicate a long option.
If an option that starts with '-' (not '--') doesn't match a long option,
but does match a short option, it is parsed as a short option
instead. */
int
getopt_long_only (argc, argv, options, long_options, opt_index)
int argc;
char *const *argv;
const char *options;
const struct option *long_options;
int *opt_index;
{
return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
}
#endif /* Not ELIDE_CODE. */
#ifdef TEST
#include <stdio.h>
int
main (argc, argv)
int argc;
char **argv;
{
int c;
int digit_optind = 0;
while (1)
{
int this_option_optind = optind ? optind : 1;
int option_index = 0;
static struct option long_options[] =
{
{"add", 1, 0, 0},
{"append", 0, 0, 0},
{"delete", 1, 0, 0},
{"verbose", 0, 0, 0},
{"create", 0, 0, 0},
{"file", 1, 0, 0},
{0, 0, 0, 0}
};
c = getopt_long (argc, argv, "abc:d:0123456789",
long_options, &option_index);
if (c == -1)
break;
switch (c)
{
case 0:
printf ("option %s", long_options[option_index].name);
if (optarg)
printf (" with arg %s", optarg);
printf ("\n");
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
if (digit_optind != 0 && digit_optind != this_option_optind)
printf ("digits occur in two different argv-elements.\n");
digit_optind = this_option_optind;
printf ("option %c\n", c);
break;
case 'a':
printf ("option a\n");
break;
case 'b':
printf ("option b\n");
break;
case 'c':
printf ("option c with value `%s'\n", optarg);
break;
case 'd':
printf ("option d with value `%s'\n", optarg);
break;
case '?':
break;
default:
printf ("?? getopt returned character code 0%o ??\n", c);
}
}
if (optind < argc)
{
printf ("non-option ARGV-elements: ");
while (optind < argc)
printf ("%s ", argv[optind++]);
printf ("\n");
}
exit (0);
}
#endif /* TEST */

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/* inputting files to be patched */
/* $Id: inp.c,v 1.16 1997/06/13 06:28:37 eggert Exp $ */
/*
Copyright 1986, 1988 Larry Wall
Copyright 1991, 1992, 1993, 1997 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; see the file COPYING.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#define XTERN extern
#include <common.h>
#include <backupfile.h>
#include <pch.h>
#include <util.h>
#undef XTERN
#define XTERN
#include <inp.h>
/* Input-file-with-indexable-lines abstract type */
static char const **i_ptr; /* pointers to lines in plan A buffer */
static size_t tibufsize; /* size of plan b buffers */
#ifndef TIBUFSIZE_MINIMUM
#define TIBUFSIZE_MINIMUM (8 * 1024) /* minimum value for tibufsize */
#endif
static int tifd = -1; /* plan b virtual string array */
static char *tibuf[2]; /* plan b buffers */
static LINENUM tiline[2] = {-1, -1}; /* 1st line in each buffer */
static LINENUM lines_per_buf; /* how many lines per buffer */
static size_t tireclen; /* length of records in tmp file */
static size_t last_line_size; /* size of last input line */
static bool plan_a PARAMS ((char const *));/* yield FALSE if memory runs out */
static void plan_b PARAMS ((char const *));
static void report_revision PARAMS ((int));
/* New patch--prepare to edit another file. */
void
re_input()
{
if (using_plan_a) {
if (i_ptr) {
free (i_ptr);
i_ptr = 0;
}
}
else {
close (tifd);
tifd = -1;
free(tibuf[0]);
tibuf[0] = 0;
tiline[0] = tiline[1] = -1;
tireclen = 0;
}
}
/* Construct the line index, somehow or other. */
void
scan_input(filename)
char *filename;
{
using_plan_a = ! (debug & 16) && plan_a (filename);
if (!using_plan_a)
plan_b(filename);
switch (verbosity)
{
case SILENT:
break;
case VERBOSE:
say ("Patching file `%s' using Plan %s...\n",
filename, using_plan_a ? "A" : "B");
break;
case DEFAULT_VERBOSITY:
say ("patching file `%s'\n", filename);
break;
}
}
/* Report whether a desired revision was found. */
static void
report_revision (found_revision)
int found_revision;
{
if (found_revision)
{
if (verbosity == VERBOSE)
say ("Good. This file appears to be the %s version.\n", revision);
}
else if (force)
{
if (verbosity != SILENT)
say ("Warning: this file doesn't appear to be the %s version -- patching anyway.\n",
revision);
}
else if (batch)
{
fatal ("This file doesn't appear to be the %s version -- aborting.",
revision);
}
else
{
ask ("This file doesn't appear to be the %s version -- patch anyway? [n] ",
revision);
if (*buf != 'y')
fatal ("aborted");
}
}
void
get_input_file (filename, outname)
char const *filename;
char const *outname;
{
int elsewhere = strcmp (filename, outname);
char const *cs;
char *diffbuf;
char *getbuf;
if (inerrno == -1)
inerrno = stat (inname, &instat) == 0 ? 0 : errno;
/* Perhaps look for RCS or SCCS versions. */
if (patch_get
&& invc != 0
&& (inerrno
|| (! elsewhere
&& (/* No one can write to it. */
(instat.st_mode & (S_IWUSR|S_IWGRP|S_IWOTH)) == 0
/* Only the owner (who's not me) can write to it. */
|| ((instat.st_mode & (S_IWGRP|S_IWOTH)) == 0
&& instat.st_uid != geteuid ()))))
&& (invc = !! (cs = (version_controller
(filename, elsewhere,
inerrno ? (struct stat *) 0 : &instat,
&getbuf, &diffbuf))))) {
if (!inerrno) {
if (!elsewhere
&& (instat.st_mode & (S_IWUSR|S_IWGRP|S_IWOTH)) != 0)
/* Somebody can write to it. */
fatal ("file `%s' seems to be locked by somebody else under %s",
filename, cs);
/* It might be checked out unlocked. See if it's safe to
check out the default version locked. */
if (verbosity == VERBOSE)
say ("Comparing file `%s' to default %s version...\n",
filename, cs);
if (systemic (diffbuf) != 0)
{
say ("warning: patching file `%s', which does not match default %s version\n",
filename, cs);
cs = 0;
}
}
if (cs && version_get (filename, cs, ! inerrno, elsewhere, getbuf,
&instat))
inerrno = 0;
free (getbuf);
free (diffbuf);
} else if (inerrno && !pch_says_nonexistent (reverse))
{
errno = inerrno;
pfatal ("can't find file `%s'", filename);
}
if (inerrno)
{
instat.st_mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH;
instat.st_size = 0;
}
else if (! S_ISREG (instat.st_mode))
fatal ("`%s' is not a regular file -- can't patch", filename);
}
/* Try keeping everything in memory. */
static bool
plan_a(filename)
char const *filename;
{
register char const *s;
register char const *lim;
register char const **ptr;
register char *buffer;
register LINENUM iline;
size_t size = instat.st_size;
size_t allocated_bytes_per_input_byte = sizeof *i_ptr + sizeof (char);
size_t allocated_bytes = (size + 2) * allocated_bytes_per_input_byte;
/* Fail if arithmetic overflow occurs during size calculations,
or if storage isn't available. */
if (size != instat.st_size
|| size + 2 < 2
|| allocated_bytes / allocated_bytes_per_input_byte != size + 2
|| ! (ptr = (char const **) malloc (allocated_bytes)))
return FALSE;
buffer = (char *) (ptr + (size + 2));
/* Read the input file, but don't bother reading it if it's empty.
When creating files, the files do not actually exist. */
if (size)
{
int ifd = open (filename, O_RDONLY|binary_transput);
size_t buffered = 0, n;
if (ifd < 0)
pfatal ("can't open file `%s'", filename);
while (size - buffered != 0
&& (n = read (ifd, buffer + buffered, size - buffered)) != 0)
{
if (n == -1)
{
/* Perhaps size is too large for this host. */
close (ifd);
free (ptr);
return FALSE;
}
buffered += n;
}
/* Some non-POSIX hosts exaggerate st_size in text mode;
or the file may have shrunk! */
size = buffered;
if (close (ifd) != 0)
read_fatal ();
}
/* Scan the buffer and build array of pointers to lines. */
iline = 0;
lim = buffer + size;
for (s = buffer; ; s++)
{
ptr[++iline] = s;
if (! (s = (char *) memchr (s, '\n', lim - s)))
break;
}
if (size && lim[-1] != '\n')
ptr[++iline] = lim;
input_lines = iline - 1;
if (revision)
{
char const *rev = revision;
int rev0 = rev[0];
int found_revision = 0;
size_t revlen = strlen (rev);
if (revlen <= size)
{
char const *limrev = lim - revlen;
for (s = buffer; (s = (char *) memchr (s, rev0, limrev - s)); s++)
if (memcmp (s, rev, revlen) == 0
&& (s == buffer || ISSPACE ((unsigned char) s[-1]))
&& (s + 1 == limrev || ISSPACE ((unsigned char) s[revlen])))
{
found_revision = 1;
break;
}
}
report_revision (found_revision);
}
/* Plan A will work. */
i_ptr = ptr;
return TRUE;
}
/* Keep (virtually) nothing in memory. */
static void
plan_b(filename)
char const *filename;
{
register FILE *ifp;
register int c;
register size_t len;
register size_t maxlen;
register int found_revision;
register size_t i;
register char const *rev;
register size_t revlen;
register LINENUM line;
if (instat.st_size == 0)
filename = NULL_DEVICE;
if (! (ifp = fopen (filename, binary_transput ? "rb" : "r")))
pfatal ("can't open file `%s'", filename);
tifd = create_file (TMPINNAME, O_RDWR | O_BINARY, (mode_t) 0);
i = 0;
len = 0;
maxlen = 1;
rev = revision;
found_revision = !rev;
revlen = rev ? strlen (rev) : 0;
while ((c = getc (ifp)) != EOF)
{
len++;
if (c == '\n')
{
if (maxlen < len)
maxlen = len;
len = 0;
}
if (!found_revision)
{
if (i == revlen)
{
found_revision = ISSPACE ((unsigned char) c);
i = (size_t) -1;
}
else if (i != (size_t) -1)
i = rev[i]==c ? i + 1 : (size_t) -1;
if (i == (size_t) -1 && ISSPACE ((unsigned char) c))
i = 0;
}
}
if (revision)
report_revision (found_revision);
Fseek (ifp, (off_t) 0, SEEK_SET); /* rewind file */
for (tibufsize = TIBUFSIZE_MINIMUM; tibufsize < maxlen; tibufsize <<= 1)
continue;
lines_per_buf = tibufsize / maxlen;
tireclen = maxlen;
tibuf[0] = xmalloc (2 * tibufsize);
tibuf[1] = tibuf[0] + tibufsize;
for (line = 1; ; line++)
{
char *p = tibuf[0] + maxlen * (line % lines_per_buf);
char const *p0 = p;
if (! (line % lines_per_buf)) /* new block */
if (write (tifd, tibuf[0], tibufsize) != tibufsize)
write_fatal ();
if ((c = getc (ifp)) == EOF)
break;
for (;;)
{
*p++ = c;
if (c == '\n')
{
last_line_size = p - p0;
break;
}
if ((c = getc (ifp)) == EOF)
{
last_line_size = p - p0;
line++;
goto EOF_reached;
}
}
}
EOF_reached:
if (ferror (ifp) || fclose (ifp) != 0)
read_fatal ();
if (line % lines_per_buf != 0)
if (write (tifd, tibuf[0], tibufsize) != tibufsize)
write_fatal ();
input_lines = line - 1;
}
/* Fetch a line from the input file. */
char const *
ifetch (line, whichbuf, psize)
register LINENUM line;
int whichbuf; /* ignored when file in memory */
size_t *psize;
{
register char const *q;
register char const *p;
if (line < 1 || line > input_lines) {
*psize = 0;
return "";
}
if (using_plan_a) {
p = i_ptr[line];
*psize = i_ptr[line + 1] - p;
return p;
} else {
LINENUM offline = line % lines_per_buf;
LINENUM baseline = line - offline;
if (tiline[0] == baseline)
whichbuf = 0;
else if (tiline[1] == baseline)
whichbuf = 1;
else {
tiline[whichbuf] = baseline;
if (lseek (tifd, (off_t) (baseline/lines_per_buf * tibufsize),
SEEK_SET) == -1
|| read (tifd, tibuf[whichbuf], tibufsize) < 0)
read_fatal ();
}
p = tibuf[whichbuf] + (tireclen*offline);
if (line == input_lines)
*psize = last_line_size;
else {
for (q = p; *q++ != '\n'; )
continue;
*psize = q - p;
}
return p;
}
}

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/* inputting files to be patched */
/* $Id: inp.h,v 1.4 1997/04/07 01:07:00 eggert Exp $ */
XTERN LINENUM input_lines; /* how long is input file in lines */
char const *ifetch PARAMS ((LINENUM, int, size_t *));
void get_input_file PARAMS ((char const *, char const *));
void re_input PARAMS ((void));
void scan_input PARAMS ((char *));

391
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/* Convert struct partime into time_t. */
/* Copyright 1992, 1993, 1994, 1995, 1997 Paul Eggert
Distributed under license by the Free Software Foundation, Inc.
This file is part of RCS.
RCS 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.
RCS 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 RCS; see the file COPYING.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Report problems and direct all questions to:
rcs-bugs@cs.purdue.edu
*/
#if has_conf_h
# include <conf.h>
#else
# if HAVE_CONFIG_H
# include <config.h>
# else
# ifndef __STDC__
# define const
# endif
# endif
/* MIPS RISCOS4.52 defines time_t in <sys/types.h> not <time.h>. */
# include <sys/types.h>
# if HAVE_LIMITS_H
# include <limits.h>
# endif
# ifndef LONG_MIN
# define LONG_MIN (-1-2147483647L)
# endif
# if STDC_HEADERS
# include <stdlib.h>
# endif
# include <time.h>
# ifdef __STDC__
# define P(x) x
# else
# define P(x) ()
# endif
#endif
#include <partime.h>
#include <maketime.h>
char const maketId[] =
"$Id: maketime.c,v 5.15 1997/06/17 16:54:36 eggert Exp $";
static int isleap P ((int));
static int month_days P ((struct tm const *));
static time_t maketime P ((struct partime const *, time_t));
/* For maximum portability, use only localtime and gmtime.
Make no assumptions about the time_t epoch or the range of time_t values.
Avoid mktime because it's not universal and because there's no easy,
portable way for mktime to yield the inverse of gmtime. */
#define TM_YEAR_ORIGIN 1900
static int
isleap (y)
int y;
{
return (y & 3) == 0 && (y % 100 != 0 || y % 400 == 0);
}
/* days in year before start of months 0-12 */
static int const month_yday[] =
{
0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365
};
/* Yield the number of days in TM's month. */
static int
month_days (tm)
struct tm const *tm;
{
int m = tm->tm_mon;
return (month_yday[m + 1] - month_yday[m]
+ (m == 1 && isleap (tm->tm_year + TM_YEAR_ORIGIN)));
}
/* Convert UNIXTIME to struct tm form.
Use gmtime if available and if !LOCALZONE, localtime otherwise. */
struct tm *
time2tm (unixtime, localzone)
time_t unixtime;
int localzone;
{
struct tm *tm;
#ifdef TZ_is_unset
static char const *TZ;
if (!TZ && !(TZ = getenv ("TZ")))
TZ_is_unset ("The TZ environment variable is not set; please set it to your timezone");
#endif
if (localzone || !(tm = gmtime (&unixtime)))
tm = localtime (&unixtime);
return tm;
}
/* Yield A - B, measured in seconds. */
time_t
difftm (a, b)
struct tm const *a;
struct tm const *b;
{
int ay = a->tm_year + (TM_YEAR_ORIGIN - 1);
int by = b->tm_year + (TM_YEAR_ORIGIN - 1);
int ac = ay / 100 - (ay % 100 < 0);
int bc = by / 100 - (by % 100 < 0);
int difference_in_day_of_year = a->tm_yday - b->tm_yday;
int intervening_leap_days = (((ay >> 2) - (by >> 2))
- (ac - bc)
+ ((ac >> 2) - (bc >> 2)));
time_t difference_in_years = ay - by;
time_t difference_in_days
= (difference_in_years * 365
+ (intervening_leap_days + difference_in_day_of_year));
return (((((difference_in_days * 24
+ (a->tm_hour - b->tm_hour))
* 60)
+ (a->tm_min - b->tm_min))
* 60)
+ (a->tm_sec - b->tm_sec));
}
/*
* Adjust time T by adding SECONDS. SECONDS must be at most 24 hours' worth.
* Adjust only T's year, mon, mday, hour, min and sec members;
* plus adjust wday if it is defined.
*/
void
adjzone (t, seconds)
register struct tm *t;
long seconds;
{
/*
* This code can be off by a second if SECONDS is not a multiple of 60,
* if T is local time, and if a leap second happens during this minute.
* But this bug has never occurred, and most likely will not ever occur.
* Liberia, the last country for which SECONDS % 60 was nonzero,
* switched to UTC in May 1972; the first leap second was in June 1972.
*/
int leap_second = t->tm_sec == 60;
long sec = seconds + (t->tm_sec - leap_second);
if (sec < 0)
{
if ((t->tm_min -= (59 - sec) / 60) < 0)
{
if ((t->tm_hour -= (59 - t->tm_min) / 60) < 0)
{
t->tm_hour += 24;
if (TM_DEFINED (t->tm_wday) && --t->tm_wday < 0)
t->tm_wday = 6;
if (--t->tm_mday <= 0)
{
if (--t->tm_mon < 0)
{
--t->tm_year;
t->tm_mon = 11;
}
t->tm_mday = month_days (t);
}
}
t->tm_min += 24 * 60;
}
sec += 24L * 60 * 60;
}
else if (60 <= (t->tm_min += sec / 60))
if (24 <= (t->tm_hour += t->tm_min / 60))
{
t->tm_hour -= 24;
if (TM_DEFINED (t->tm_wday) && ++t->tm_wday == 7)
t->tm_wday = 0;
if (month_days (t) < ++t->tm_mday)
{
if (11 < ++t->tm_mon)
{
++t->tm_year;
t->tm_mon = 0;
}
t->tm_mday = 1;
}
}
t->tm_min %= 60;
t->tm_sec = (int) (sec % 60) + leap_second;
}
/*
* Convert TM to time_t, using localtime if LOCALZONE and gmtime otherwise.
* Use only TM's year, mon, mday, hour, min, and sec members.
* Ignore TM's old tm_yday and tm_wday, but fill in their correct values.
* Yield -1 on failure (e.g. a member out of range).
* Posix 1003.1-1990 doesn't allow leap seconds, but some implementations
* have them anyway, so allow them if localtime/gmtime does.
*/
time_t
tm2time (tm, localzone)
struct tm *tm;
int localzone;
{
/* Cache the most recent t,tm pairs; 1 for gmtime, 1 for localtime. */
static time_t t_cache[2];
static struct tm tm_cache[2];
time_t d, gt;
struct tm const *gtm;
/*
* The maximum number of iterations should be enough to handle any
* combinations of leap seconds, time zone rule changes, and solar time.
* 4 is probably enough; we use a bigger number just to be safe.
*/
int remaining_tries = 8;
/* Avoid subscript errors. */
if (12 <= (unsigned) tm->tm_mon)
return -1;
tm->tm_yday = month_yday[tm->tm_mon] + tm->tm_mday
- (tm->tm_mon < 2 || !isleap (tm->tm_year + TM_YEAR_ORIGIN));
/* Make a first guess. */
gt = t_cache[localzone];
gtm = gt ? &tm_cache[localzone] : time2tm (gt, localzone);
/* Repeatedly use the error from the guess to improve the guess. */
while ((d = difftm (tm, gtm)) != 0)
{
if (--remaining_tries == 0)
return -1;
gt += d;
gtm = time2tm (gt, localzone);
}
/*
* Check that the guess actually matches;
* overflow can cause difftm to yield 0 even on differing times,
* or tm may have members out of range (e.g. bad leap seconds).
*/
#define TM_DIFFER(a,b) \
( \
((a)->tm_year ^ (b)->tm_year) | \
((a)->tm_mon ^ (b)->tm_mon) | \
((a)->tm_mday ^ (b)->tm_mday) | \
((a)->tm_hour ^ (b)->tm_hour) | \
((a)->tm_min ^ (b)->tm_min) | \
((a)->tm_sec ^ (b)->tm_sec) \
)
if (TM_DIFFER (tm, gtm))
{
/*
* If gt is a leap second, try gt+1; if it is one greater than
* a leap second, try gt-1; otherwise, it doesn't matter.
* Leap seconds always fall at month end.
*/
int yd = tm->tm_year - gtm->tm_year;
gt += yd + (yd ? 0 : tm->tm_mon - gtm->tm_mon);
gtm = time2tm (gt, localzone);
if (TM_DIFFER (tm, gtm))
return -1;
}
t_cache[localzone] = gt;
tm_cache[localzone] = *gtm;
tm->tm_wday = gtm->tm_wday;
return gt;
}
/*
* Check *PT and convert it to time_t.
* If it is incompletely specified, use DEFAULT_TIME to fill it out.
* Use localtime if PT->zone is the special value TM_LOCAL_ZONE.
* Yield -1 on failure.
* ISO 8601 day-of-year and week numbers are not yet supported.
*/
static time_t
maketime (pt, default_time)
struct partime const *pt;
time_t default_time;
{
int localzone, wday;
struct tm tm;
struct tm *tm0 = 0;
time_t r;
tm0 = 0; /* Keep gcc -Wall happy. */
localzone = pt->zone == TM_LOCAL_ZONE;
tm = pt->tm;
if (TM_DEFINED (pt->ymodulus) || !TM_DEFINED (tm.tm_year))
{
/* Get tm corresponding to default time. */
tm0 = time2tm (default_time, localzone);
if (!localzone)
adjzone (tm0, pt->zone);
}
if (TM_DEFINED (pt->ymodulus))
tm.tm_year +=
(tm0->tm_year + TM_YEAR_ORIGIN) / pt->ymodulus * pt->ymodulus;
else if (!TM_DEFINED (tm.tm_year))
{
/* Set default year, month, day from current time. */
tm.tm_year = tm0->tm_year + TM_YEAR_ORIGIN;
if (!TM_DEFINED (tm.tm_mon))
{
tm.tm_mon = tm0->tm_mon;
if (!TM_DEFINED (tm.tm_mday))
tm.tm_mday = tm0->tm_mday;
}
}
/* Convert from partime year (Gregorian) to Posix year. */
tm.tm_year -= TM_YEAR_ORIGIN;
/* Set remaining default fields to be their minimum values. */
if (!TM_DEFINED (tm.tm_mon))
tm.tm_mon = 0;
if (!TM_DEFINED (tm.tm_mday))
tm.tm_mday = 1;
if (!TM_DEFINED (tm.tm_hour))
tm.tm_hour = 0;
if (!TM_DEFINED (tm.tm_min))
tm.tm_min = 0;
if (!TM_DEFINED (tm.tm_sec))
tm.tm_sec = 0;
if (!localzone)
adjzone (&tm, -pt->zone);
wday = tm.tm_wday;
/* Convert and fill in the rest of the tm. */
r = tm2time (&tm, localzone);
/* Check weekday. */
if (r != -1 && TM_DEFINED (wday) && wday != tm.tm_wday)
return -1;
return r;
}
/* Parse a free-format date in SOURCE, yielding a Unix format time. */
time_t
str2time (source, default_time, default_zone)
char const *source;
time_t default_time;
long default_zone;
{
struct partime pt;
if (*partime (source, &pt))
return -1;
if (pt.zone == TM_UNDEFINED_ZONE)
pt.zone = default_zone;
return maketime (&pt, default_time);
}
#if TEST
#include <stdio.h>
int
main (argc, argv)
int argc;
char **argv;
{
time_t default_time = time ((time_t *) 0);
long default_zone = argv[1] ? atol (argv[1]) : 0;
char buf[1000];
while (fgets (buf, sizeof (buf), stdin))
{
time_t t = str2time (buf, default_time, default_zone);
printf ("%s", asctime (gmtime (&t)));
}
return 0;
}
#endif

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/* Yield time_t from struct partime yielded by partime. */
/* Copyright 1993, 1994, 1995 Paul Eggert
Distributed under license by the Free Software Foundation, Inc.
This file is part of RCS.
RCS 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.
RCS 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 RCS; see the file COPYING.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Report problems and direct all questions to:
rcs-bugs@cs.purdue.edu
*/
#if defined __STDC__ || has_prototypes
# define __MAKETIME_P(x) x
#else
# define __MAKETIME_P(x) ()
#endif
struct tm *time2tm __MAKETIME_P ((time_t, int));
time_t difftm __MAKETIME_P ((struct tm const *, struct tm const *));
time_t str2time __MAKETIME_P ((char const *, time_t, long));
time_t tm2time __MAKETIME_P ((struct tm *, int));
void adjzone __MAKETIME_P ((struct tm *, long));

199
contrib/patch/memchr.c Normal file
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/* Copyright (C) 1991, 1993, 1996 Free Software Foundation, Inc.
Based on strlen implementation by Torbjorn Granlund (tege@sics.se),
with help from Dan Sahlin (dan@sics.se) and
commentary by Jim Blandy (jimb@ai.mit.edu);
adaptation to memchr suggested by Dick Karpinski (dick@cca.ucsf.edu),
and implemented by Roland McGrath (roland@ai.mit.edu).
NOTE: The canonical source of this file is maintained with the GNU C Library.
Bugs can be reported to bug-glibc@prep.ai.mit.edu.
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. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#undef __ptr_t
#if defined (__cplusplus) || (defined (__STDC__) && __STDC__)
# define __ptr_t void *
#else /* Not C++ or ANSI C. */
# define __ptr_t char *
#endif /* C++ or ANSI C. */
#if defined (_LIBC)
# include <string.h>
#endif
#if defined (HAVE_LIMITS_H) || defined (_LIBC)
# include <limits.h>
#endif
#define LONG_MAX_32_BITS 2147483647
#ifndef LONG_MAX
#define LONG_MAX LONG_MAX_32_BITS
#endif
#include <sys/types.h>
/* Search no more than N bytes of S for C. */
__ptr_t
memchr (s, c, n)
const __ptr_t s;
int c;
size_t n;
{
const unsigned char *char_ptr;
const unsigned long int *longword_ptr;
unsigned long int longword, magic_bits, charmask;
c = (unsigned char) c;
/* Handle the first few characters by reading one character at a time.
Do this until CHAR_PTR is aligned on a longword boundary. */
for (char_ptr = (const unsigned char *) s;
n > 0 && ((unsigned long int) char_ptr
& (sizeof (longword) - 1)) != 0;
--n, ++char_ptr)
if (*char_ptr == c)
return (__ptr_t) char_ptr;
/* All these elucidatory comments refer to 4-byte longwords,
but the theory applies equally well to 8-byte longwords. */
longword_ptr = (unsigned long int *) char_ptr;
/* Bits 31, 24, 16, and 8 of this number are zero. Call these bits
the "holes." Note that there is a hole just to the left of
each byte, with an extra at the end:
bits: 01111110 11111110 11111110 11111111
bytes: AAAAAAAA BBBBBBBB CCCCCCCC DDDDDDDD
The 1-bits make sure that carries propagate to the next 0-bit.
The 0-bits provide holes for carries to fall into. */
if (sizeof (longword) != 4 && sizeof (longword) != 8)
abort ();
#if LONG_MAX <= LONG_MAX_32_BITS
magic_bits = 0x7efefeff;
#else
magic_bits = ((unsigned long int) 0x7efefefe << 32) | 0xfefefeff;
#endif
/* Set up a longword, each of whose bytes is C. */
charmask = c | (c << 8);
charmask |= charmask << 16;
#if LONG_MAX > LONG_MAX_32_BITS
charmask |= charmask << 32;
#endif
/* Instead of the traditional loop which tests each character,
we will test a longword at a time. The tricky part is testing
if *any of the four* bytes in the longword in question are zero. */
while (n >= sizeof (longword))
{
/* We tentatively exit the loop if adding MAGIC_BITS to
LONGWORD fails to change any of the hole bits of LONGWORD.
1) Is this safe? Will it catch all the zero bytes?
Suppose there is a byte with all zeros. Any carry bits
propagating from its left will fall into the hole at its
least significant bit and stop. Since there will be no
carry from its most significant bit, the LSB of the
byte to the left will be unchanged, and the zero will be
detected.
2) Is this worthwhile? Will it ignore everything except
zero bytes? Suppose every byte of LONGWORD has a bit set
somewhere. There will be a carry into bit 8. If bit 8
is set, this will carry into bit 16. If bit 8 is clear,
one of bits 9-15 must be set, so there will be a carry
into bit 16. Similarly, there will be a carry into bit
24. If one of bits 24-30 is set, there will be a carry
into bit 31, so all of the hole bits will be changed.
The one misfire occurs when bits 24-30 are clear and bit
31 is set; in this case, the hole at bit 31 is not
changed. If we had access to the processor carry flag,
we could close this loophole by putting the fourth hole
at bit 32!
So it ignores everything except 128's, when they're aligned
properly.
3) But wait! Aren't we looking for C, not zero?
Good point. So what we do is XOR LONGWORD with a longword,
each of whose bytes is C. This turns each byte that is C
into a zero. */
longword = *longword_ptr++ ^ charmask;
/* Add MAGIC_BITS to LONGWORD. */
if ((((longword + magic_bits)
/* Set those bits that were unchanged by the addition. */
^ ~longword)
/* Look at only the hole bits. If any of the hole bits
are unchanged, most likely one of the bytes was a
zero. */
& ~magic_bits) != 0)
{
/* Which of the bytes was C? If none of them were, it was
a misfire; continue the search. */
const unsigned char *cp = (const unsigned char *) (longword_ptr - 1);
if (cp[0] == c)
return (__ptr_t) cp;
if (cp[1] == c)
return (__ptr_t) &cp[1];
if (cp[2] == c)
return (__ptr_t) &cp[2];
if (cp[3] == c)
return (__ptr_t) &cp[3];
#if LONG_MAX > 2147483647
if (cp[4] == c)
return (__ptr_t) &cp[4];
if (cp[5] == c)
return (__ptr_t) &cp[5];
if (cp[6] == c)
return (__ptr_t) &cp[6];
if (cp[7] == c)
return (__ptr_t) &cp[7];
#endif
}
n -= sizeof (longword);
}
char_ptr = (const unsigned char *) longword_ptr;
while (n-- > 0)
{
if (*char_ptr == c)
return (__ptr_t) char_ptr;
else
++char_ptr;
}
return 0;
}

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/* Parse a string, yielding a struct partime that describes it. */
/* Copyright 1993, 1994, 1995, 1997 Paul Eggert
Distributed under license by the Free Software Foundation, Inc.
This file is part of RCS.
RCS 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.
RCS 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 RCS; see the file COPYING.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Report problems and direct all questions to:
rcs-bugs@cs.purdue.edu
*/
#if has_conf_h
# include <conf.h>
#else
# if HAVE_CONFIG_H
# include <config.h>
# else
# ifndef __STDC__
# define const
# endif
# endif
# if HAVE_LIMITS_H
# include <limits.h>
# endif
# ifndef LONG_MIN
# define LONG_MIN (-1-2147483647L)
# endif
# if STDC_HEADERS
# include <stdlib.h>
# endif
# include <time.h>
# ifdef __STDC__
# define P(x) x
# else
# define P(x) ()
# endif
#endif
#include <ctype.h>
#if STDC_HEADERS
# define CTYPE_DOMAIN(c) 1
#else
# define CTYPE_DOMAIN(c) ((unsigned) (c) <= 0177)
#endif
#define ISALNUM(c) (CTYPE_DOMAIN (c) && isalnum (c))
#define ISALPHA(c) (CTYPE_DOMAIN (c) && isalpha (c))
#define ISSPACE(c) (CTYPE_DOMAIN (c) && isspace (c))
#define ISUPPER(c) (CTYPE_DOMAIN (c) && isupper (c))
#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
#include <partime.h>
char const partimeId[] =
"$Id: partime.c,v 5.16 1997/05/19 06:33:53 eggert Exp $";
/* Lookup tables for names of months, weekdays, time zones. */
#define NAME_LENGTH_MAXIMUM 4
struct name_val
{
char name[NAME_LENGTH_MAXIMUM];
int val;
};
static char const *parse_decimal P ((char const *, int, int, int, int, int *, int *));
static char const *parse_fixed P ((char const *, int, int *));
static char const *parse_pattern_letter P ((char const *, int, struct partime *));
static char const *parse_prefix P ((char const *, struct partime *, int *));
static char const *parse_ranged P ((char const *, int, int, int, int *));
static int lookup P ((char const *, struct name_val const[]));
static int merge_partime P ((struct partime *, struct partime const *));
static void undefine P ((struct partime *));
static struct name_val const month_names[] =
{
{"jan", 0},
{"feb", 1},
{"mar", 2},
{"apr", 3},
{"may", 4},
{"jun", 5},
{"jul", 6},
{"aug", 7},
{"sep", 8},
{"oct", 9},
{"nov", 10},
{"dec", 11},
{"", TM_UNDEFINED}
};
static struct name_val const weekday_names[] =
{
{"sun", 0},
{"mon", 1},
{"tue", 2},
{"wed", 3},
{"thu", 4},
{"fri", 5},
{"sat", 6},
{"", TM_UNDEFINED}
};
#define hr60nonnegative(t) ((t)/100 * 60 + (t)%100)
#define hr60(t) ((t)<0 ? -hr60nonnegative(-(t)) : hr60nonnegative(t))
#define zs(t,s) {s, hr60(t)}
#define zd(t,s,d) zs(t, s), zs((t)+100, d)
static struct name_val const zone_names[] =
{
zs (-1000, "hst"), /* Hawaii */
zd (-1000, "hast", "hadt"), /* Hawaii-Aleutian */
zd (- 900, "akst", "akdt"), /* Alaska */
zd (- 800, "pst" , "pdt" ), /* Pacific */
zd (- 700, "mst" , "mdt" ), /* Mountain */
zd (- 600, "cst" , "cdt" ), /* Central */
zd (- 500, "est" , "edt" ), /* Eastern */
zd (- 400, "ast" , "adt" ), /* Atlantic */
zd (- 330, "nst" , "ndt" ), /* Newfoundland */
zs ( 000, "utc" ), /* Coordinated Universal */
zs ( 000, "uct" ), /* " */
zs ( 000, "cut" ), /* " */
zs ( 000, "ut"), /* Universal */
zs ( 000, "z"), /* Zulu (required by ISO 8601) */
zd ( 000, "gmt" , "bst" ), /* Greenwich Mean, British Summer */
zd ( 000, "wet" , "west"), /* Western European */
zd ( 100, "cet" , "cest"), /* Central European */
zd ( 100, "met" , "mest"), /* Middle European (bug in old tz versions) */
zd ( 100, "mez" , "mesz"), /* Mittel-Europaeische Zeit */
zd ( 200, "eet" , "eest"), /* Eastern European */
zs ( 530, "ist" ), /* India */
zd ( 900, "jst" , "jdt" ), /* Japan */
zd ( 900, "kst" , "kdt" ), /* Korea */
zd ( 1200, "nzst", "nzdt"), /* New Zealand */
{"lt", 1},
#if 0
/* The following names are duplicates or are not well attested.
There are lots more where these came from. */
zs (-1100, "sst" ), /* Samoan */
zd (- 900, "yst" , "ydt" ), /* Yukon - name is no longer used */
zd (- 500, "ast" , "adt" ), /* Acre */
zd (- 400, "wst" , "wdt" ), /* Western Brazil */
zd (- 400, "cst" , "cdt" ), /* Chile */
zd (- 200, "fst" , "fdt" ), /* Fernando de Noronha */
zs ( 000, "wat" ), /* West African */
zs ( 100, "cat" ), /* Central African */
zs ( 200, "sat" ), /* South African */
zd ( 200, "ist" , "idt" ), /* Israel */
zs ( 300, "eat" ), /* East African */
zd ( 300, "msk" , "msd" ), /* Moscow */
zd ( 330, "ist" , "idt" ), /* Iran */
zs ( 800, "hkt" ), /* Hong Kong */
zs ( 800, "sgt" ), /* Singapore */
zd ( 800, "cst" , "cdt" ), /* China */
zd ( 800, "wst" , "wst" ), /* Western Australia */
zd ( 930, "cst" , "cst" ), /* Central Australia */
zs ( 1000, "gst" ), /* Guam */
zd ( 1000, "est" , "est" ), /* Eastern Australia */
#endif
{"", -1}
};
/* Look for a prefix of S in TABLE, returning val for first matching entry. */
static int
lookup (s, table)
char const *s;
struct name_val const table[];
{
int j;
char buf[NAME_LENGTH_MAXIMUM];
for (j = 0; j < NAME_LENGTH_MAXIMUM; j++)
{
unsigned char c = *s++;
if (! ISALPHA (c))
{
buf[j] = '\0';
break;
}
buf[j] = ISUPPER (c) ? tolower (c) : c;
}
for (;; table++)
for (j = 0; ; j++)
if (j == NAME_LENGTH_MAXIMUM || ! table[0].name[j])
return table[0].val;
else if (buf[j] != table[0].name[j])
break;
}
/* Set *T to ``undefined'' values. */
static void
undefine (t)
struct partime *t;
{
t->tm.tm_sec = t->tm.tm_min = t->tm.tm_hour = t->tm.tm_mday = t->tm.tm_mon
= t->tm.tm_year = t->tm.tm_wday = t->tm.tm_yday
= t->ymodulus = t->yweek
= TM_UNDEFINED;
t->zone = TM_UNDEFINED_ZONE;
}
/* Array of patterns to look for in a date string.
Order is important: we look for the first matching pattern
whose values do not contradict values that we already know about.
See `parse_pattern_letter' below for the meaning of the pattern codes. */
static char const *const patterns[] =
{
/* These traditional patterns must come first,
to prevent an ISO 8601 format from misinterpreting their prefixes. */
"E_n_y", "x", /* RFC 822 */
"E_n", "n_E", "n", "t:m:s_A", "t:m_A", "t_A", /* traditional */
"y/N/D$", /* traditional RCS */
/* ISO 8601:1988 formats, generalized a bit. */
"y-N-D$", "4ND$", "Y-N$",
"RND$", "-R=N$", "-R$", "--N=D$", "N=DT",
"--N$", "---D$", "DT",
"Y-d$", "4d$", "R=d$", "-d$", "dT",
"y-W-X", "yWX", "y=W",
"-r-W-X", "r-W-XT", "-rWX", "rWXT", "-W=X", "W=XT", "-W",
"-w-X", "w-XT", "---X$", "XT", "4$",
"T",
"h:m:s$", "hms$", "h:m$", "hm$", "h$", "-m:s$", "-ms$", "-m$", "--s$",
"Y", "Z",
0
};
/* Parse an initial prefix of STR, setting *T accordingly.
Return the first character after the prefix, or 0 if it couldn't be parsed.
Start with pattern *PI; if success, set *PI to the next pattern to try.
Set *PI to -1 if we know there are no more patterns to try;
if *PI is initially negative, give up immediately. */
static char const *
parse_prefix (str, t, pi)
char const *str;
struct partime *t;
int *pi;
{
int i = *pi;
char const *pat;
unsigned char c;
if (i < 0)
return 0;
/* Remove initial noise. */
while (! ISALNUM (c = *str) && c != '-' && c != '+')
{
if (! c)
{
undefine (t);
*pi = -1;
return str;
}
str++;
}
/* Try a pattern until one succeeds. */
while ((pat = patterns[i++]) != 0)
{
char const *s = str;
undefine (t);
do
{
if (! (c = *pat++))
{
*pi = i;
return s;
}
}
while ((s = parse_pattern_letter (s, c, t)) != 0);
}
return 0;
}
/* Parse an initial prefix of S of length DIGITS; it must be a number.
Store the parsed number into *RES.
Return the first character after the prefix, or 0 if it wasn't parsed. */
static char const *
parse_fixed (s, digits, res)
char const *s;
int digits, *res;
{
int n = 0;
char const *lim = s + digits;
while (s < lim)
{
unsigned d = *s++ - '0';
if (9 < d)
return 0;
n = 10 * n + d;
}
*res = n;
return s;
}
/* Parse an initial prefix of S of length DIGITS;
it must be a number in the range LO through HI.
Store the parsed number into *RES.
Return the first character after the prefix, or 0 if it wasn't parsed. */
static char const *
parse_ranged (s, digits, lo, hi, res)
char const *s;
int digits, lo, hi, *res;
{
s = parse_fixed (s, digits, res);
return s && lo <= *res && *res <= hi ? s : 0;
}
/* Parse an initial prefix of S of length DIGITS;
it must be a number in the range LO through HI
and it may be followed by a fraction to be computed using RESOLUTION.
Store the parsed number into *RES; store the fraction times RESOLUTION,
rounded to the nearest integer, into *FRES.
Return the first character after the prefix, or 0 if it wasn't parsed. */
static char const *
parse_decimal (s, digits, lo, hi, resolution, res, fres)
char const *s;
int digits, lo, hi, resolution, *res, *fres;
{
s = parse_fixed (s, digits, res);
if (s && lo <= *res && *res <= hi)
{
int f = 0;
if ((s[0] == ',' || s[0] == '.') && ISDIGIT (s[1]))
{
char const *s1 = ++s;
int num10 = 0, denom10 = 10, product;
while (ISDIGIT (*++s))
{
int d = denom10 * 10;
if (d / 10 != denom10)
return 0; /* overflow */
denom10 = d;
}
s = parse_fixed (s1, (int) (s - s1), &num10);
product = num10 * resolution;
f = (product + (denom10 >> 1)) / denom10;
f -= f & (product % denom10 == denom10 >> 1); /* round to even */
if (f < 0 || product/resolution != num10)
return 0; /* overflow */
}
*fres = f;
return s;
}
return 0;
}
/* Parse an initial prefix of S; it must denote a time zone.
Set *ZONE to the number of seconds east of GMT,
or to TM_LOCAL_ZONE if it is the local time zone.
Return the first character after the prefix, or 0 if it wasn't parsed. */
char *
parzone (s, zone)
char const *s;
long *zone;
{
char sign;
int hh, mm, ss;
int minutesEastOfUTC;
long offset, z;
/* The formats are LT, n, n DST, nDST, no, o
where n is a time zone name
and o is a time zone offset of the form [-+]hh[:mm[:ss]]. */
switch (*s)
{
case '-':
case '+':
z = 0;
break;
default:
minutesEastOfUTC = lookup (s, zone_names);
if (minutesEastOfUTC == -1)
return 0;
/* Don't bother to check rest of spelling. */
while (ISALPHA ((unsigned char) *s))
s++;
/* Don't modify LT. */
if (minutesEastOfUTC == 1)
{
*zone = TM_LOCAL_ZONE;
return (char *) s;
}
z = minutesEastOfUTC * 60L;
/* Look for trailing " DST". */
if ((s[-1] == 'T' || s[-1] == 't')
&& (s[-2] == 'S' || s[-2] == 's')
&& (s[-3] == 'D' || s[-3] == 'd'))
goto trailing_dst;
while (ISSPACE ((unsigned char) *s))
s++;
if ((s[0] == 'D' || s[0] == 'd')
&& (s[1] == 'S' || s[1] == 's')
&& (s[2] == 'T' || s[2] == 't'))
{
s += 3;
trailing_dst:
*zone = z + 60*60;
return (char *) s;
}
switch (*s)
{
case '-':
case '+':
break;
default:
*zone = z;
return (char *) s;
}
break;
}
sign = *s++;
if (! (s = parse_ranged (s, 2, 0, 23, &hh)))
return 0;
mm = ss = 0;
if (*s == ':')
s++;
if (ISDIGIT (*s))
{
if (! (s = parse_ranged (s, 2, 0, 59, &mm)))
return 0;
if (*s == ':' && s[-3] == ':' && ISDIGIT (s[1])
&& ! (s = parse_ranged (s + 1, 2, 0, 59, &ss)))
return 0;
}
if (ISDIGIT (*s))
return 0;
offset = (hh * 60 + mm) * 60L + ss;
*zone = z + (sign == '-' ? -offset : offset);
/* ?? Are fractions allowed here? If so, they're not implemented. */
return (char *) s;
}
/* Parse an initial prefix of S, matching the pattern whose code is C.
Set *T accordingly.
Return the first character after the prefix, or 0 if it wasn't parsed. */
static char const *
parse_pattern_letter (s, c, t)
char const *s;
int c;
struct partime *t;
{
switch (c)
{
case '$': /* The next character must be a non-digit. */
if (ISDIGIT (*s))
return 0;
break;
case '-':
case '/':
case ':':
/* These characters stand for themselves. */
if (*s++ != c)
return 0;
break;
case '4': /* 4-digit year */
s = parse_fixed (s, 4, &t->tm.tm_year);
break;
case '=': /* optional '-' */
s += *s == '-';
break;
case 'A': /* AM or PM */
/* This matches the regular expression [AaPp][Mm]?.
It must not be followed by a letter or digit;
otherwise it would match prefixes of strings like "PST". */
switch (*s++)
{
case 'A':
case 'a':
if (t->tm.tm_hour == 12)
t->tm.tm_hour = 0;
break;
case 'P':
case 'p':
if (t->tm.tm_hour != 12)
t->tm.tm_hour += 12;
break;
default:
return 0;
}
switch (*s)
{
case 'M':
case 'm':
s++;
break;
}
if (ISALNUM ((unsigned char) *s))
return 0;
break;
case 'D': /* day of month [01-31] */
s = parse_ranged (s, 2, 1, 31, &t->tm.tm_mday);
break;
case 'd': /* day of year [001-366] */
s = parse_ranged (s, 3, 1, 366, &t->tm.tm_yday);
t->tm.tm_yday--;
break;
case 'E': /* extended day of month [1-9, 01-31] */
s = parse_ranged (s, (ISDIGIT (s[0]) && ISDIGIT (s[1])) + 1, 1, 31,
&t->tm.tm_mday);
break;
case 'h': /* hour [00-23 followed by optional fraction] */
{
int frac;
s = parse_decimal (s, 2, 0, 23, 60 * 60, &t->tm.tm_hour, &frac);
t->tm.tm_min = frac / 60;
t->tm.tm_sec = frac % 60;
}
break;
case 'm': /* minute [00-59 followed by optional fraction] */
s = parse_decimal (s, 2, 0, 59, 60, &t->tm.tm_min, &t->tm.tm_sec);
break;
case 'n': /* month name [e.g. "Jan"] */
if (! TM_DEFINED (t->tm.tm_mon = lookup (s, month_names)))
return 0;
/* Don't bother to check rest of spelling. */
while (ISALPHA ((unsigned char) *s))
s++;
break;
case 'N': /* month [01-12] */
s = parse_ranged (s, 2, 1, 12, &t->tm.tm_mon);
t->tm.tm_mon--;
break;
case 'r': /* year % 10 (remainder in origin-0 decade) [0-9] */
s = parse_fixed (s, 1, &t->tm.tm_year);
t->ymodulus = 10;
break;
case_R:
case 'R': /* year % 100 (remainder in origin-0 century) [00-99] */
s = parse_fixed (s, 2, &t->tm.tm_year);
t->ymodulus = 100;
break;
case 's': /* second [00-60 followed by optional fraction] */
{
int frac;
s = parse_decimal (s, 2, 0, 60, 1, &t->tm.tm_sec, &frac);
t->tm.tm_sec += frac;
}
break;
case 'T': /* 'T' or 't' */
switch (*s++)
{
case 'T':
case 't':
break;
default:
return 0;
}
break;
case 't': /* traditional hour [1-9 or 01-12] */
s = parse_ranged (s, (ISDIGIT (s[0]) && ISDIGIT (s[1])) + 1, 1, 12,
&t->tm.tm_hour);
break;
case 'w': /* 'W' or 'w' only (stands for current week) */
switch (*s++)
{
case 'W':
case 'w':
break;
default:
return 0;
}
break;
case 'W': /* 'W' or 'w', followed by a week of year [00-53] */
switch (*s++)
{
case 'W':
case 'w':
break;
default:
return 0;
}
s = parse_ranged (s, 2, 0, 53, &t->yweek);
break;
case 'X': /* weekday (1=Mon ... 7=Sun) [1-7] */
s = parse_ranged (s, 1, 1, 7, &t->tm.tm_wday);
t->tm.tm_wday--;
break;
case 'x': /* weekday name [e.g. "Sun"] */
if (! TM_DEFINED (t->tm.tm_wday = lookup (s, weekday_names)))
return 0;
/* Don't bother to check rest of spelling. */
while (ISALPHA ((unsigned char) *s))
s++;
break;
case 'y': /* either R or Y */
if (ISDIGIT (s[0]) && ISDIGIT (s[1]) && ! ISDIGIT (s[2]))
goto case_R;
/* fall into */
case 'Y': /* year in full [4 or more digits] */
{
int len = 0;
while (ISDIGIT (s[len]))
len++;
if (len < 4)
return 0;
s = parse_fixed (s, len, &t->tm.tm_year);
}
break;
case 'Z': /* time zone */
s = parzone (s, &t->zone);
break;
case '_': /* possibly empty sequence of non-alphanumerics */
while (! ISALNUM ((unsigned char) *s) && *s)
s++;
break;
default: /* bad pattern */
return 0;
}
return s;
}
/* If there is no conflict, merge into *T the additional information in *U
and return 0. Otherwise do nothing and return -1. */
static int
merge_partime (t, u)
struct partime *t;
struct partime const *u;
{
# define conflict(a,b) ((a) != (b) && TM_DEFINED (a) && TM_DEFINED (b))
if (conflict (t->tm.tm_sec, u->tm.tm_sec)
|| conflict (t->tm.tm_min, u->tm.tm_min)
|| conflict (t->tm.tm_hour, u->tm.tm_hour)
|| conflict (t->tm.tm_mday, u->tm.tm_mday)
|| conflict (t->tm.tm_mon, u->tm.tm_mon)
|| conflict (t->tm.tm_year, u->tm.tm_year)
|| conflict (t->tm.tm_wday, u->tm.tm_yday)
|| conflict (t->ymodulus, u->ymodulus)
|| conflict (t->yweek, u->yweek)
|| (t->zone != u->zone
&& t->zone != TM_UNDEFINED_ZONE
&& u->zone != TM_UNDEFINED_ZONE))
return -1;
# undef conflict
# define merge_(a,b) if (TM_DEFINED (b)) (a) = (b);
merge_ (t->tm.tm_sec, u->tm.tm_sec)
merge_ (t->tm.tm_min, u->tm.tm_min)
merge_ (t->tm.tm_hour, u->tm.tm_hour)
merge_ (t->tm.tm_mday, u->tm.tm_mday)
merge_ (t->tm.tm_mon, u->tm.tm_mon)
merge_ (t->tm.tm_year, u->tm.tm_year)
merge_ (t->tm.tm_wday, u->tm.tm_yday)
merge_ (t->ymodulus, u->ymodulus)
merge_ (t->yweek, u->yweek)
# undef merge_
if (u->zone != TM_UNDEFINED_ZONE)
t->zone = u->zone;
return 0;
}
/* Parse a date/time prefix of S, putting the parsed result into *T.
Return the first character after the prefix.
The prefix may contain no useful information;
in that case, *T will contain only undefined values. */
char *
partime (s, t)
char const *s;
struct partime *t;
{
struct partime p;
undefine (t);
while (*s)
{
int i = 0;
char const *s1;
do
{
if (! (s1 = parse_prefix (s, &p, &i)))
return (char *) s;
}
while (merge_partime (t, &p) != 0);
s = s1;
}
return (char *) s;
}

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/* Parse a string, yielding a struct partime that describes it. */
/* Copyright 1993, 1994, 1995, 1997 Paul Eggert
Distributed under license by the Free Software Foundation, Inc.
This file is part of RCS.
RCS 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.
RCS 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 RCS; see the file COPYING.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Report problems and direct all questions to:
rcs-bugs@cs.purdue.edu
*/
#define TM_UNDEFINED (-1)
#define TM_DEFINED(x) (0 <= (x))
/* #include <limits.h> if you want to use these symbols. */
#define TM_LOCAL_ZONE LONG_MIN
#define TM_UNDEFINED_ZONE (LONG_MIN + 1)
struct partime
{
/* This structure describes the parsed time.
Only the following tm_* values in it are used:
sec, min, hour, mday, mon, year, wday, yday.
If TM_UNDEFINED (value), the parser never found the value.
The tm_year field is the actual year, not the year - 1900;
but see ymodulus below. */
struct tm tm;
/* If !TM_UNDEFINED (ymodulus),
then tm.tm_year is actually modulo ymodulus. */
int ymodulus;
/* Week of year, ISO 8601 style.
If TM_UNDEFINED (yweek), the parser never found yweek.
Weeks start on Mondays.
Week 1 includes Jan 4. */
int yweek;
/* Seconds east of UTC; or TM_LOCAL_ZONE or TM_UNDEFINED_ZONE. */
long zone;
};
#if defined __STDC__ || has_prototypes
# define __PARTIME_P(x) x
#else
# define __PARTIME_P(x) ()
#endif
char *partime __PARTIME_P ((char const *, struct partime *));
char *parzone __PARTIME_P ((char const *, long *));

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/* reading patches */
/* $Id: pch.h,v 1.8 1997/06/13 06:28:37 eggert Exp $ */
LINENUM pch_end PARAMS ((void));
LINENUM pch_first PARAMS ((void));
LINENUM pch_hunk_beg PARAMS ((void));
LINENUM pch_newfirst PARAMS ((void));
LINENUM pch_prefix_context PARAMS ((void));
LINENUM pch_ptrn_lines PARAMS ((void));
LINENUM pch_repl_lines PARAMS ((void));
LINENUM pch_suffix_context PARAMS ((void));
bool pch_swap PARAMS ((void));
bool pch_write_line PARAMS ((LINENUM, FILE *));
bool there_is_another_patch PARAMS ((void));
char *pfetch PARAMS ((LINENUM));
char pch_char PARAMS ((LINENUM));
int another_hunk PARAMS ((enum diff, int));
int pch_says_nonexistent PARAMS ((int));
size_t pch_line_len PARAMS ((LINENUM));
time_t pch_timestamp PARAMS ((int));
void do_ed_script PARAMS ((FILE *));
void open_patch_file PARAMS ((char const *));
void re_patch PARAMS ((void));
void set_hunkmax PARAMS ((void));

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/* Shell command argument quoting.
Copyright (C) 1994, 1995, 1997 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; see the file COPYING.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Written by Paul Eggert <eggert@twinsun.com> */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <sys/types.h>
#include <quotearg.h>
/* Place into QUOTED a quoted version of ARG suitable for `system'.
Return the length of the resulting string (which is not null-terminated).
If QUOTED is null, return the length without any side effects. */
size_t
quote_system_arg (quoted, arg)
char *quoted;
char const *arg;
{
char const *a;
size_t len = 0;
/* Scan ARG, copying it to QUOTED if QUOTED is not null,
looking for shell metacharacters. */
for (a = arg; ; a++)
{
char c = *a;
switch (c)
{
case 0:
/* ARG has no shell metacharacters. */
return len;
case '=':
if (*arg == '-')
break;
/* Fall through. */
case '\t': case '\n': case ' ':
case '!': case '"': case '#': case '$': case '%': case '&': case '\'':
case '(': case ')': case '*': case ';':
case '<': case '>': case '?': case '[': case '\\':
case '^': case '`': case '|': case '~':
{
/* ARG has a shell metacharacter.
Start over, quoting it this time. */
len = 0;
c = *arg++;
/* If ARG is an option, quote just its argument.
This is not necessary, but it looks nicer. */
if (c == '-' && arg < a)
{
c = *arg++;
if (quoted)
{
quoted[len] = '-';
quoted[len + 1] = c;
}
len += 2;
if (c == '-')
while (arg < a)
{
c = *arg++;
if (quoted)
quoted[len] = c;
len++;
if (c == '=')
break;
}
c = *arg++;
}
if (quoted)
quoted[len] = '\'';
len++;
for (; c; c = *arg++)
{
if (c == '\'')
{
if (quoted)
{
quoted[len] = '\'';
quoted[len + 1] = '\\';
quoted[len + 2] = '\'';
}
len += 3;
}
if (quoted)
quoted[len] = c;
len++;
}
if (quoted)
quoted[len] = '\'';
return len + 1;
}
}
if (quoted)
quoted[len] = c;
len++;
}
}

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/* quote.h -- declarations for quoting system arguments */
#if defined __STDC__ || __GNUC__
# define __QUOTEARG_P(args) args
#else
# define __QUOTEARG_P(args) ()
#endif
size_t quote_system_arg __QUOTEARG_P ((char *, char const *));

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/* BSD compatible rename and directory rename function for System V.
Copyright (C) 1988, 1990 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. */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#ifndef errno
extern int errno;
#endif
#if STAT_MACROS_BROKEN
# undef S_ISDIR
#endif
#if !defined(S_ISDIR) && defined(S_IFDIR)
# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#endif
/* Rename file FROM to file TO.
Return 0 if successful, -1 if not. */
int
rename (from, to)
char *from;
char *to;
{
struct stat from_stats, to_stats;
int pid, status;
if (stat (from, &from_stats))
return -1;
/* Be careful not to unlink `from' if it happens to be equal to `to' or
(on filesystems that silently truncate filenames after 14 characters)
if `from' and `to' share the significant characters. */
if (stat (to, &to_stats))
{
if (errno != ENOENT)
return -1;
}
else
{
if ((from_stats.st_dev == to_stats.st_dev)
&& (from_stats.st_ino == to_stats.st_ino))
/* `from' and `to' designate the same file on that filesystem. */
return 0;
if (unlink (to) && errno != ENOENT)
return -1;
}
#ifdef MVDIR
/* If MVDIR is defined, it should be the full filename of a setuid root
program able to link and unlink directories. If MVDIR is not defined,
then the capability of renaming directories may be missing. */
if (S_ISDIR (from_stats.st_mode))
{
/* Need a setuid root process to link and unlink directories. */
pid = fork ();
switch (pid)
{
case -1: /* Error. */
error (1, errno, "cannot fork");
case 0: /* Child. */
execl (MVDIR, "mvdir", from, to, (char *) 0);
error (255, errno, "cannot run `%s'", MVDIR);
default: /* Parent. */
while (wait (&status) != pid)
/* Do nothing. */ ;
errno = 0; /* mvdir printed the system error message. */
if (status)
return -1;
}
}
else
#endif /* MVDIR */
{
if (link (from, to))
return -1;
if (unlink (from) && errno != ENOENT)
{
unlink (to);
return -1;
}
}
return 0;
}

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/* utility functions for `patch' */
/* $Id: util.h,v 1.14 1997/06/13 06:28:37 eggert Exp $ */
int ok_to_reverse PARAMS ((char const *, ...)) __attribute__ ((format (printf, 1, 2)));
void ask PARAMS ((char const *, ...)) __attribute__ ((format (printf, 1, 2)));
void say PARAMS ((char const *, ...)) __attribute__ ((format (printf, 1, 2)));
void fatal PARAMS ((char const *, ...))
__attribute__ ((noreturn, format (printf, 1, 2)));
void pfatal PARAMS ((char const *, ...))
__attribute__ ((noreturn, format (printf, 1, 2)));
char *fetchname PARAMS ((char *, int, time_t *));
char *savebuf PARAMS ((char const *, size_t));
char *savestr PARAMS ((char const *));
char const *version_controller PARAMS ((char const *, int, struct stat const *, char **, char **));
int version_get PARAMS ((char const *, char const *, int, int, char const *, struct stat *));
int create_file PARAMS ((char const *, int, mode_t));
int systemic PARAMS ((char const *));
void Fseek PARAMS ((FILE *, file_offset, int));
void copy_file PARAMS ((char const *, char const *, mode_t));
void exit_with_signal PARAMS ((int)) __attribute__ ((noreturn));
void ignore_signals PARAMS ((void));
void init_time PARAMS ((void));
void memory_fatal PARAMS ((void));
void move_file PARAMS ((char const *, char *, mode_t, int));
void read_fatal PARAMS ((void));
void remove_prefix PARAMS ((char *, size_t));
void removedirs PARAMS ((char *));
void set_signals PARAMS ((int));
void write_fatal PARAMS ((void));

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/* Print the version number. */
/* $Id: version.c,v 1.5 1997/05/21 18:29:20 eggert Exp $ */
#define XTERN extern
#include <common.h>
#undef XTERN
#define XTERN
#include <patchlevel.h>
#include <version.h>
static char const copyright_string[] = "\
Copyright 1988 Larry Wall\n\
Copyright 1997 Free Software Foundation, Inc.";
static char const free_software_msgid[] = "\
This program comes with NO WARRANTY, to the extent permitted by law.\n\
You may redistribute copies of this program\n\
under the terms of the GNU General Public License.\n\
For more information about these matters, see the file named COPYING.";
static char const authorship_msgid[] = "\
written by Larry Wall with lots o' patches by Paul Eggert";
void
version()
{
printf ("%s %s\n%s\n\n%s\n\n%s\n", program_name, PATCH_VERSION,
copyright_string, free_software_msgid, authorship_msgid);
}

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contrib/patch/version.h Normal file
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/* Print the version number. */
/* $Id: version.h,v 1.3 1997/04/07 01:07:00 eggert Exp $ */
void version PARAMS ((void));