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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:17:33 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:17:33 +0000 |
commit | 5e45211a64149b3c659b90ff2de6fa982a5a93ed (patch) | |
tree | 739caf8c461053357daa9f162bef34516c7bf452 /src/port/getopt.c | |
parent | Initial commit. (diff) | |
download | postgresql-15-5e45211a64149b3c659b90ff2de6fa982a5a93ed.tar.xz postgresql-15-5e45211a64149b3c659b90ff2de6fa982a5a93ed.zip |
Adding upstream version 15.5.upstream/15.5
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/port/getopt.c')
-rw-r--r-- | src/port/getopt.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/src/port/getopt.c b/src/port/getopt.c new file mode 100644 index 0000000..207c283 --- /dev/null +++ b/src/port/getopt.c @@ -0,0 +1,136 @@ +/* src/port/getopt.c */ + +/* + * Copyright (c) 1987, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * 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 + */ + +#include "c.h" + +#include "pg_getopt.h" + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95"; +#endif /* LIBC_SCCS and not lint */ + + +/* + * On OpenBSD and some versions of Solaris, opterr and friends are defined in + * core libc rather than in a separate getopt module. Define these variables + * only if configure found they aren't there by default; otherwise, this + * module and its callers will just use libc's variables. (We assume that + * testing opterr is sufficient for all of these.) + */ +#ifndef HAVE_INT_OPTERR + +int opterr = 1, /* if error message should be printed */ + optind = 1, /* index into parent argv vector */ + optopt; /* character checked for validity */ +char *optarg; /* argument associated with option */ + +#endif + +#define BADCH (int)'?' +#define BADARG (int)':' +#define EMSG "" + +/* + * getopt + * Parse argc/argv argument vector. + * + * 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(int nargc, char *const *nargv, const char *ostr) +{ + static char *place = EMSG; /* option letter processing */ + char *oli; /* option letter list index */ + + if (!*place) + { /* update scanning pointer */ + if (optind >= nargc || *(place = nargv[optind]) != '-') + { + place = EMSG; + return -1; + } + if (place[1] && *++place == '-' && place[1] == '\0') + { /* found "--" */ + ++optind; + place = EMSG; + return -1; + } + } /* option letter okay? */ + if ((optopt = (int) *place++) == (int) ':' || + !(oli = strchr(ostr, optopt))) + { + /* + * if the user didn't specify '-' as an option, assume it means -1. + */ + if (optopt == (int) '-') + { + place = EMSG; + return -1; + } + if (!*place) + ++optind; + if (opterr && *ostr != ':') + (void) fprintf(stderr, + "illegal option -- %c\n", optopt); + return BADCH; + } + if (*++oli != ':') + { /* don't need argument */ + optarg = NULL; + if (!*place) + ++optind; + } + else + { /* need an argument */ + if (*place) /* no white space */ + optarg = place; + else if (nargc <= ++optind) + { /* no arg */ + place = EMSG; + if (*ostr == ':') + return BADARG; + if (opterr) + (void) fprintf(stderr, + "option requires an argument -- %c\n", + optopt); + return BADCH; + } + else + /* white space */ + optarg = nargv[optind]; + place = EMSG; + ++optind; + } + return optopt; /* dump back option letter */ +} |