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Jim Meyering 1993-09-08 05:08:08 +00:00
parent 27049d3bfc
commit 219bbb0758
3 changed files with 172 additions and 64 deletions
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170
lib/getopt.c
View File

@ -3,7 +3,8 @@
"Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu
before changing it!
Copyright (C) 1987, 88, 89, 90, 91, 1992 Free Software Foundation, Inc.
Copyright (C) 1987, 88, 89, 90, 91, 92, 1993
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
@ -19,42 +20,51 @@
along with this program; if not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* AIX requires this to be the first thing in the file. */
#ifdef __GNUC__
#define alloca __builtin_alloca
#else /* not __GNUC__ */
#if defined (HAVE_ALLOCA_H) || (defined(sparc) && (defined(sun) || (!defined(USG) && !defined(SVR4) && !defined(__svr4__))))
#include <alloca.h>
#else
#ifdef _AIX
#pragma alloca
#else
char *alloca ();
#ifdef HAVE_CONFIG_H
/* We use <config.h> instead of "config.h" so that a compilation
using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
(which it would do because getopt.c was found in $srcdir). */
#include <config.h>
#endif
#ifndef __STDC__
/* This is a separate conditional since some stdc systems
reject `defined (const)'. */
#ifndef const
#define const
#endif
#endif
/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. */
#ifndef _NO_PROTO
#define _NO_PROTO
#endif
#endif /* alloca.h */
#endif /* not __GNUC__ */
#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. */
#if defined (_LIBC) || !defined (__GNU_LIBRARY__)
/* This needs to come after some library #include
to get __GNU_LIBRARY__ defined. */
#ifdef __GNU_LIBRARY__
#undef alloca
/* Don't include stdlib.h for non-GNU C libraries because some of them
contain conflicting prototypes for getopt. */
#include <stdlib.h>
#else /* Not GNU C library. */
#define __alloca alloca
#endif /* GNU C library. */
#if !__STDC__
#define const
#endif
/* If GETOPT_COMPAT is defined, `+' as well as `--' can introduce a
long-named option. Because this is not POSIX.2 compliant, it is
being phased out. */
#define GETOPT_COMPAT
/* #define GETOPT_COMPAT */
/* This version of `getopt' appears to the caller like standard Unix `getopt'
but it behaves differently for the user, since it allows the user
@ -92,6 +102,7 @@ char *optarg = 0;
Otherwise, `optind' communicates from one call to the next
how much of ARGV has been scanned so far. */
/* XXX 1003.2 says this must be 1 before any call. */
int optind = 0;
/* The next char to be scanned in the option-element
@ -108,6 +119,12 @@ static char *nextchar;
int opterr = 1;
/* Set to an option character which was unrecognized.
This must be initialized on some systems to avoid linking in the
system's own getopt implementation. */
int optopt = '?';
/* Describe how to deal with options that follow non-option ARGV-elements.
If the caller did not specify anything,
@ -149,7 +166,6 @@ static enum
in GCC. */
#include <string.h>
#define my_index strchr
#define my_bcopy(src, dst, n) memcpy ((dst), (src), (n))
#else
/* Avoid depending on library functions or files
@ -158,28 +174,32 @@ static enum
char *getenv ();
static char *
my_index (string, chr)
char *string;
my_index (str, chr)
const char *str;
int chr;
{
while (*string)
while (*str)
{
if (*string == chr)
return string;
string++;
if (*str == chr)
return (char *) str;
str++;
}
return 0;
}
static void
my_bcopy (from, to, size)
char *from, *to;
int size;
{
int i;
for (i = 0; i < size; i++)
to[i] = from[i];
}
/* If using GCC, we can safely declare strlen this way.
If not using GCC, it is ok not to declare it.
(Supposedly there are some machines where it might get a warning,
but changing this conditional to __STDC__ is too risky.) */
#ifdef __GNUC__
#ifdef IN_GCC
#include "gstddef.h"
#else
#include <stddef.h>
#endif
extern size_t strlen (const char *);
#endif
#endif /* GNU C library. */
/* Handle permutation of arguments. */
@ -204,17 +224,51 @@ static void
exchange (argv)
char **argv;
{
int nonopts_size = (last_nonopt - first_nonopt) * sizeof (char *);
char **temp = (char **) __alloca (nonopts_size);
int bottom = first_nonopt;
int middle = last_nonopt;
int top = optind;
char *tem;
/* Interchange the two blocks of data in ARGV. */
/* Exchange the shorter segment with the far end of the longer segment.
That puts the shorter segment into the right place.
It leaves the longer segment in the right place overall,
but it consists of two parts that need to be swapped next. */
my_bcopy ((char *) &argv[first_nonopt], (char *) temp, nonopts_size);
my_bcopy ((char *) &argv[last_nonopt], (char *) &argv[first_nonopt],
(optind - last_nonopt) * sizeof (char *));
my_bcopy ((char *) temp,
(char *) &argv[first_nonopt + optind - last_nonopt],
nonopts_size);
while (top > middle && middle > bottom)
{
if (top - middle > middle - bottom)
{
/* Bottom segment is the short one. */
int len = middle - bottom;
register int i;
/* Swap it with the top part of the top segment. */
for (i = 0; i < len; i++)
{
tem = argv[bottom + i];
argv[bottom + i] = argv[top - (middle - bottom) + i];
argv[top - (middle - bottom) + i] = tem;
}
/* Exclude the moved bottom segment from further swapping. */
top -= len;
}
else
{
/* Top segment is the short one. */
int len = top - middle;
register int i;
/* Swap it with the bottom part of the bottom segment. */
for (i = 0; i < len; i++)
{
tem = argv[bottom + i];
argv[bottom + i] = argv[middle + i];
argv[middle + i] = tem;
}
/* Exclude the moved top segment from further swapping. */
bottom += len;
}
}
/* Update records for the slots the non-options now occupy. */
@ -490,7 +544,7 @@ _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
fprintf (stderr, "%s: option `%s' requires an argument\n",
argv[0], argv[optind - 1]);
nextchar += strlen (nextchar);
return '?';
return optstring[0] == ':' ? ':' : '?';
}
}
nextchar += strlen (nextchar);
@ -544,12 +598,18 @@ _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
{
if (opterr)
{
#if 0
if (c < 040 || c >= 0177)
fprintf (stderr, "%s: unrecognized option, character code 0%o\n",
argv[0], c);
else
fprintf (stderr, "%s: unrecognized option `-%c'\n", argv[0], c);
#else
/* 1003.2 specifies the format of this message. */
fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c);
#endif
}
optopt = c;
return '?';
}
if (temp[1] == ':')
@ -579,8 +639,20 @@ _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
else if (optind == argc)
{
if (opterr)
{
#if 0
fprintf (stderr, "%s: option `-%c' requires an argument\n",
argv[0], c);
#else
/* 1003.2 specifies the format of this message. */
fprintf (stderr, "%s: option requires an argument -- %c\n",
argv[0], c);
#endif
}
optopt = c;
if (optstring[0] == ':')
c = ':';
else
c = '?';
}
else
@ -605,6 +677,8 @@ getopt (argc, argv, optstring)
(int *) 0,
0);
}
#endif /* _LIBC or not __GNU_LIBRARY__. */
#ifdef TEST

6
lib/getopt.h
View File

@ -1,5 +1,5 @@
/* Declarations for getopt.
Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
Copyright (C) 1989, 1990, 1991, 1992, 1993 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
@ -49,6 +49,10 @@ extern int optind;
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

40
lib/getopt1.c
View File

@ -1,5 +1,6 @@
/* Getopt for GNU.
Copyright (C) 1987, 88, 89, 90, 91, 1992 Free Software Foundation, Inc.
/* getopt_long and getopt_long_only entry points for GNU getopt.
Copyright (C) 1987, 88, 89, 90, 91, 92, 1993
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
@ -15,17 +16,43 @@
along with this program; if not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifdef HAVE_CONFIG_H
/* We use <config.h> instead of "config.h" so that a compilation
using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
(which it would do because getopt1.c was found in $srcdir). */
#include <config.h>
#endif
#include "getopt.h"
#ifndef __STDC__
/* This is a separate conditional since some stdc systems
reject `defined (const)'. */
#ifndef const
#define const
#endif
#endif
#if defined(STDC_HEADERS) || defined(__GNU_LIBRARY__) || defined (LIBC)
#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. */
#if defined (_LIBC) || !defined (__GNU_LIBRARY__)
/* This needs to come after some library #include
to get __GNU_LIBRARY__ defined. */
#ifdef __GNU_LIBRARY__
#include <stdlib.h>
#else /* STDC_HEADERS or __GNU_LIBRARY__ */
#else
char *getenv ();
#endif /* STDC_HEADERS or __GNU_LIBRARY__ */
#endif
#ifndef NULL
#define NULL 0
@ -57,6 +84,9 @@ getopt_long_only (argc, argv, options, long_options, opt_index)
{
return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
}
#endif /* _LIBC or not __GNU_LIBRARY__. */
#ifdef TEST