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Diffstat (limited to 'winsup/cygwin/libc/getopt.c')
| -rw-r--r-- | winsup/cygwin/libc/getopt.c | 390 |
1 files changed, 390 insertions, 0 deletions
diff --git a/winsup/cygwin/libc/getopt.c b/winsup/cygwin/libc/getopt.c new file mode 100644 index 000000000..a5883f07c --- /dev/null +++ b/winsup/cygwin/libc/getopt.c @@ -0,0 +1,390 @@ +/* + * Copyright (c) 1987, 1993, 1994, 1996 + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "getopt.h" + +int opterr = 1; /* if error message should be printed */ +int optind = 1; /* index into parent argv vector */ +int optopt; /* character checked for validity */ +int optreset; /* reset getopt */ +char *optarg; /* argument associated with option */ + +static char * __progname (char *); +int getopt_internal (int, char * const *, const char *); + +static char * __progname(nargv0) + char * nargv0; +{ + char * tmp = strrchr(nargv0, '/'); + if (tmp) tmp++; else tmp = nargv0; + return(tmp); +} + +#define BADCH (int)'?' +#define BADARG (int)':' +#define EMSG "" + +/* + * getopt -- + * Parse argc/argv argument vector. + */ +int +getopt_internal(nargc, nargv, ostr) + int nargc; + char * const *nargv; + const char *ostr; +{ + static const char *place = EMSG; /* option letter processing */ + char *oli; /* option letter list index */ + + if (optreset || !*place) { /* update scanning pointer */ + optreset = 0; + if (optind >= nargc || *(place = nargv[optind]) != '-') { + place = EMSG; + return (-1); + } + if (place[1] && *++place == '-') { /* found "--" */ + /* ++optind; */ + place = EMSG; + return (-2); + } + } /* 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)'-') + return (-1); + if (!*place) + ++optind; + if (opterr && *ostr != ':') + (void)fprintf(stderr, + "%s: illegal option -- %c\n", __progname(nargv[0]), optopt); + return (BADCH); + } + if (*++oli != ':') { /* don't need argument */ + optarg = NULL; + if (!*place) + ++optind; + } else { /* need an argument */ + if (*place) /* no white space */ + optarg = (char *)place; + else if (nargc <= ++optind) { /* no arg */ + place = EMSG; + if ((opterr) && (*ostr != ':')) + (void)fprintf(stderr, + "%s: option requires an argument -- %c\n", + __progname(nargv[0]), optopt); + return (BADARG); + } else /* white space */ + optarg = nargv[optind]; + place = EMSG; + ++optind; + } + return (optopt); /* dump back option letter */ +} + +/* + * getopt -- + * Parse argc/argv argument vector. + */ +int +getopt(nargc, nargv, ostr) + int nargc; + char * const *nargv; + const char *ostr; +{ + int retval; + + if ((retval = getopt_internal(nargc, nargv, ostr)) == -2) { + retval = -1; + ++optind; + } + return(retval); +} + +/* + * getopt_long -- + * Parse argc/argv argument vector. + */ +int +getopt_long(nargc, nargv, options, long_options, index) + int nargc; + char ** nargv; + char * options; + struct option * long_options; + int * index; +{ + int retval; + + if ((retval = getopt_internal(nargc, nargv, options)) == -2) { + char *current_argv = nargv[optind++] + 2, *has_equal; + int i, current_argv_len, match = -1; + + if (*current_argv == '\0') { + return(-1); + } + if ((has_equal = strchr(current_argv, '='))) { + current_argv_len = has_equal - current_argv; + has_equal++; + } else + current_argv_len = strlen(current_argv); + + for (i = 0; long_options[i].name; i++) { + if (strncmp(current_argv, long_options[i].name, current_argv_len)) + continue; + + if (strlen(long_options[i].name) == current_argv_len) { + match = i; + break; + } + if (match == -1) + match = i; + } + if (match != -1) { + if (long_options[match].has_arg) { + if (has_equal) + optarg = has_equal; + else + optarg = nargv[optind++]; + } + if ((long_options[match].has_arg == 1) && (optarg == NULL)) { + /* Missing option, leading : indecates no error */ + if ((opterr) && (*options != ':')) + (void)fprintf(stderr, + "%s: option requires an argument -- %s\n", + __progname(nargv[0]), current_argv); + return (BADARG); + } + } else { /* No matching argument */ + if ((opterr) && (*options != ':')) + (void)fprintf(stderr, + "%s: illegal option -- %s\n", __progname(nargv[0]), current_argv); + return (BADCH); + } + if (long_options[match].flag) { + *long_options[match].flag = long_options[match].val; + retval = 0; + } else + retval = long_options[match].val; + if (index) + *index = match; + } + return(retval); +} +/*****************************************************************/ + + + + + + +#include <stdio.h> +#include "getopt.h" + +/* Stuff for getopt */ +static struct option long_options[] = { + { (char *)"simple", 0, NULL, 's' }, + { (char *)"t", 0, NULL, 't' }, + { (char *)"u", 1, NULL, 'u' }, + { (char *)"v", 0, NULL, 'v' }, + /* Do not reorder the following */ + { (char *)"yy", 0, NULL, 'Y' }, + { (char *)"y", 0, NULL, 'y' }, + { (char *)"zz", 0, NULL, 'z' }, + { (char *)"zzz", 0, NULL, 'Z' }, + { NULL, 0, NULL, 0 } +}; +extern char * optarg; +extern int optreset; +extern int optind; + +int test_getopt_long(args, expected_result) + char ** args, * expected_result; +{ + char actual_result[256]; + int count, pass, i; + + pass = 0; + optind = 1; + optreset = 1; + for (count = 0; args[count]; count++); + while ((i = getopt_long(count, args, (char *)"ab:", long_options, NULL)) != EOF) { + switch(i) { + case 'u': + if (strcmp(optarg, "bogus")) { + printf("--u option does not have bogus optarg.\n"); + return(1); + } + case 'Y': + case 's': + case 't': + case 'v': + case 'y': + case 'z': + actual_result[pass++] = i; + break; + default: + actual_result[pass++] = '?'; + break; + } + } + + actual_result[pass] = '\0'; + return(strcmp(actual_result, expected_result)); + +} + +#if 0 +int usage(value) + int value; +{ + printf("test_getopt [-d]\n"); + exit(value); +} +#endif + +#if 0 + +/* + * Static arglists for individual tests + * This is ugly and maybe I should just use a variable arglist + */ +const char *argv1[] = { "Test simple", "--s", NULL }; +const char *argv2[] = { "Test multiple", "--s", "--t", NULL }; +const char *argv3[] = { "Test optarg with space", "--u", "bogus", NULL }; +const char *argv4[] = { "Test optarg with equal", "--u=bogus", NULL }; +const char *argv5[] = { "Test complex", "--s", "--t", "--u", "bogus", "--v", NULL }; +const char *argv6[] = { "Test exact", "--y", NULL }; +const char *argv7[] = { "Test abbr", "--z", NULL }; +const char *argv8[] = { "Test simple termination", "--z", "foo", "--z", NULL }; +const char *argv9[] = { "Test -- termination", "--z", "--", "--z", NULL }; + +int debug = 0; +int main(argc, argv) + int argc; + char ** argv; +{ + int i; + + /* Of course if getopt() has a bug this won't work */ + while ((i = getopt(argc, argv, "d")) != EOF) { + switch(i) { + case 'd': + debug++; + break; + default: + usage(1); + break; + } + } + + /* Test getopt_long() */ + { + if (test_getopt_long(argv1, "s")) { + printf("Test simple failed.\n"); + exit(1); + } + } + + /* Test multiple arguments */ + { + if (test_getopt_long(argv2, "st")) { + printf("Test multiple failed.\n"); + exit(1); + } + } + + /* Test optarg with space */ + { + if (test_getopt_long(argv3, "u")) { + printf("Test optarg with space failed.\n"); + exit(1); + } + } + + /* Test optarg with equal */ + { + if (test_getopt_long(argv4, "u")) { + printf("Test optarg with equal failed.\n"); + exit(1); + } + } + + /* Test complex */ + { + if (test_getopt_long(argv5, "stuv")) { + printf("Test complex failed.\n"); + exit(1); + } + } + + /* Test that exact matches override abbr matches */ + { + if (test_getopt_long(argv6, "y")) { + printf("Test exact failed.\n"); + exit(1); + } + } + + /* Test that abbr matches are first match. */ + { + if (test_getopt_long(argv7, "z")) { + printf("Test abbr failed.\n"); + exit(1); + } + } + + /* Test that option termination succeeds */ + { + if (test_getopt_long(argv8, "z")) { + printf("Test simple termination failed.\n"); + exit(1); + } + } + + /* Test that "--" termination succeeds */ + { + if (test_getopt_long(argv9, "z")) { + printf("Test -- termination failed.\n"); + exit(1); + } + } + exit(0); +} +#endif |