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Make getopt_long prettier and more standalone
This commit is contained in:
Joel Rosdahl
parent
00a9c50bb5
commit
4ad5570d23
@ -11,18 +11,18 @@
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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@ -30,37 +30,28 @@
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $PostgreSQL: pgsql/src/port/getopt_long.c,v 1.8 2009/06/11 14:49:15 momjian Exp $
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*/
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#include "c.h"
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#include "getopt_long.h"
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#ifndef HAVE_INT_OPTRESET
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int optreset;
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/* else the "extern" was provided by getopt_long.h */
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#endif
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#define BADCH '?'
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#define BADARG ':'
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#define EMSG ""
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#define BADCH '?'
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#define BADARG ':'
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#define EMSG ""
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int
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getopt_long(int argc, char *const argv[],
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const char *optstring,
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const struct option * longopts, int *longindex)
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const char *optstring,
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const struct option * longopts, int *longindex)
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{
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static char *place = EMSG; /* option letter processing */
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char *oli; /* option letter list index */
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if (optreset || !*place)
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{ /* update scanning pointer */
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optreset = 0;
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static char *place = EMSG; /* option letter processing */
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char *oli; /* option letter list index */
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if (!*place)
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{ /* update scanning pointer */
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if (optind >= argc)
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{
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place = EMSG;
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@ -78,7 +69,7 @@ getopt_long(int argc, char *const argv[],
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place++;
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if (place[0] && place[0] == '-' && place[1] == '\0')
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{ /* found "--" */
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{ /* found "--" */
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++optind;
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place = EMSG;
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return -1;
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@ -87,8 +78,8 @@ getopt_long(int argc, char *const argv[],
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if (place[0] && place[0] == '-' && place[1])
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{
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/* long option */
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size_t namelen;
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int i;
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size_t namelen;
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int i;
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place++;
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@ -113,8 +104,8 @@ getopt_long(int argc, char *const argv[],
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return BADARG;
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if (opterr)
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fprintf(stderr,
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"%s: option requires an argument -- %s\n",
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argv[0], place);
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"%s: option requires an argument -- %s\n",
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argv[0], place);
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place = EMSG;
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optind++;
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return BADCH;
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@ -148,7 +139,7 @@ getopt_long(int argc, char *const argv[],
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if (opterr && optstring[0] != ':')
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fprintf(stderr,
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"%s: illegal option -- %s\n", argv[0], place);
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"%s: illegal option -- %s\n", argv[0], place);
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place = EMSG;
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optind++;
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return BADCH;
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@ -165,29 +156,29 @@ getopt_long(int argc, char *const argv[],
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++optind;
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if (opterr && *optstring != ':')
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fprintf(stderr,
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"%s: illegal option -- %c\n", argv[0], optopt);
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"%s: illegal option -- %c\n", argv[0], optopt);
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return BADCH;
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}
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if (oli[1] != ':')
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{ /* don't need argument */
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{ /* don't need argument */
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optarg = NULL;
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if (!*place)
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++optind;
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}
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else
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{ /* need an argument */
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if (*place) /* no white space */
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{ /* need an argument */
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if (*place) /* no white space */
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optarg = place;
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else if (argc <= ++optind)
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{ /* no arg */
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{ /* no arg */
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place = EMSG;
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if (*optstring == ':')
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return BADARG;
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if (opterr)
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fprintf(stderr,
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"%s: option requires an argument -- %c\n",
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argv[0], optopt);
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"%s: option requires an argument -- %c\n",
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argv[0], optopt);
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return BADCH;
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}
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else
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@ -3,42 +3,28 @@
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* The Regents of the University of California. All rights reserved.
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*
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* Portions Copyright (c) 2003-2010, PostgreSQL Global Development Group
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*
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* $PostgreSQL: pgsql/src/include/getopt_long.h,v 1.12 2010/01/02 16:58:00 momjian Exp $
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*/
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#ifndef GETOPT_LONG_H
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#define GETOPT_LONG_H
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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#endif
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/* These are picked up from the system's getopt() facility. */
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extern int opterr;
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extern int optind;
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extern int optopt;
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extern int opterr;
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extern int optind;
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extern int optopt;
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extern char *optarg;
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extern int optreset;
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#ifndef HAVE_STRUCT_OPTION
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struct option
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{
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const char *name;
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int has_arg;
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int *flag;
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int val;
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int has_arg;
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int *flag;
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int val;
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};
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#define no_argument 0
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#define required_argument 1
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#endif
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#ifndef HAVE_GETOPT_LONG
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extern int getopt_long(int argc, char *const argv[],
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const char *optstring,
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const struct option * longopts, int *longindex);
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#endif
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const char *optstring,
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const struct option * longopts, int *longindex);
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#endif /* GETOPT_LONG_H */
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