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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:15:05 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:15:05 +0000
commit46651ce6fe013220ed397add242004d764fc0153 (patch)
tree6e5299f990f88e60174a1d3ae6e48eedd2688b2b /src/port/getopt_long.c
parentInitial commit. (diff)
downloadpostgresql-14-46651ce6fe013220ed397add242004d764fc0153.tar.xz
postgresql-14-46651ce6fe013220ed397add242004d764fc0153.zip
Adding upstream version 14.5.upstream/14.5upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/port/getopt_long.c')
-rw-r--r--src/port/getopt_long.c218
1 files changed, 218 insertions, 0 deletions
diff --git a/src/port/getopt_long.c b/src/port/getopt_long.c
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+/*
+ * getopt_long() -- long options parser
+ *
+ * Portions Copyright (c) 1987, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Portions Copyright (c) 2003
+ * PostgreSQL Global Development Group
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * src/port/getopt_long.c
+ */
+
+#include "c.h"
+
+#include "getopt_long.h"
+
+#define BADCH '?'
+#define BADARG ':'
+#define EMSG ""
+
+
+/*
+ * getopt_long
+ * Parse argc/argv argument vector, with long options.
+ *
+ * This implementation does not use optreset. Instead, we guarantee that
+ * it can be restarted on a new argv array after a previous call returned -1,
+ * if the caller resets optind to 1 before the first call of the new series.
+ * (Internally, this means we must be sure to reset "place" to EMSG before
+ * returning -1.)
+ */
+int
+getopt_long(int argc, char *const argv[],
+ const char *optstring,
+ const struct option *longopts, int *longindex)
+{
+ static char *place = EMSG; /* option letter processing */
+ char *oli; /* option letter list index */
+
+ if (!*place)
+ { /* update scanning pointer */
+ if (optind >= argc)
+ {
+ place = EMSG;
+ return -1;
+ }
+
+ place = argv[optind];
+
+ if (place[0] != '-')
+ {
+ place = EMSG;
+ return -1;
+ }
+
+ place++;
+
+ if (!*place)
+ {
+ /* treat "-" as not being an option */
+ place = EMSG;
+ return -1;
+ }
+
+ if (place[0] == '-' && place[1] == '\0')
+ {
+ /* found "--", treat it as end of options */
+ ++optind;
+ place = EMSG;
+ return -1;
+ }
+
+ if (place[0] == '-' && place[1])
+ {
+ /* long option */
+ size_t namelen;
+ int i;
+
+ place++;
+
+ namelen = strcspn(place, "=");
+ for (i = 0; longopts[i].name != NULL; i++)
+ {
+ if (strlen(longopts[i].name) == namelen
+ && strncmp(place, longopts[i].name, namelen) == 0)
+ {
+ int has_arg = longopts[i].has_arg;
+
+ if (has_arg != no_argument)
+ {
+ if (place[namelen] == '=')
+ optarg = place + namelen + 1;
+ else if (optind < argc - 1 &&
+ has_arg == required_argument)
+ {
+ optind++;
+ optarg = argv[optind];
+ }
+ else
+ {
+ if (optstring[0] == ':')
+ return BADARG;
+
+ if (opterr && has_arg == required_argument)
+ fprintf(stderr,
+ "%s: option requires an argument -- %s\n",
+ argv[0], place);
+
+ place = EMSG;
+ optind++;
+
+ if (has_arg == required_argument)
+ return BADCH;
+ optarg = NULL;
+ }
+ }
+ else
+ {
+ optarg = NULL;
+ if (place[namelen] != 0)
+ {
+ /* XXX error? */
+ }
+ }
+
+ optind++;
+
+ if (longindex)
+ *longindex = i;
+
+ place = EMSG;
+
+ if (longopts[i].flag == NULL)
+ return longopts[i].val;
+ else
+ {
+ *longopts[i].flag = longopts[i].val;
+ return 0;
+ }
+ }
+ }
+
+ if (opterr && optstring[0] != ':')
+ fprintf(stderr,
+ "%s: illegal option -- %s\n", argv[0], place);
+ place = EMSG;
+ optind++;
+ return BADCH;
+ }
+ }
+
+ /* short option */
+ optopt = (int) *place++;
+
+ oli = strchr(optstring, optopt);
+ if (!oli)
+ {
+ if (!*place)
+ ++optind;
+ if (opterr && *optstring != ':')
+ fprintf(stderr,
+ "%s: illegal option -- %c\n", argv[0], optopt);
+ return BADCH;
+ }
+
+ if (oli[1] != ':')
+ { /* don't need argument */
+ optarg = NULL;
+ if (!*place)
+ ++optind;
+ }
+ else
+ { /* need an argument */
+ if (*place) /* no white space */
+ optarg = place;
+ else if (argc <= ++optind)
+ { /* no arg */
+ place = EMSG;
+ if (*optstring == ':')
+ return BADARG;
+ if (opterr)
+ fprintf(stderr,
+ "%s: option requires an argument -- %c\n",
+ argv[0], optopt);
+ return BADCH;
+ }
+ else
+ /* white space */
+ optarg = argv[optind];
+ place = EMSG;
+ ++optind;
+ }
+ return optopt;
+}