diff options
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/stdlib/Makefile.inc | 17 | ||||
| -rw-r--r-- | lib/libc/stdlib/getopt_long.3 | 326 | ||||
| -rw-r--r-- | lib/libc/stdlib/getopt_long.c | 510 |
3 files changed, 845 insertions, 8 deletions
diff --git a/lib/libc/stdlib/Makefile.inc b/lib/libc/stdlib/Makefile.inc index 6b23e5cb2d0..8f16135e998 100644 --- a/lib/libc/stdlib/Makefile.inc +++ b/lib/libc/stdlib/Makefile.inc @@ -4,10 +4,10 @@ .PATH: ${LIBCSRCDIR}/arch/${MACHINE_ARCH}/stdlib ${LIBCSRCDIR}/stdlib SRCS+= a64l.c abort.c atexit.c atoi.c atof.c atol.c atoll.c bsearch.c \ - calloc.c cfree.c exit.c ecvt.c gcvt.c getenv.c getopt.c getsubopt.c \ - heapsort.c l64a.c malloc.c merge.c multibyte.c putenv.c qsort.c \ - radixsort.c rand.c random.c realpath.c setenv.c strtod.c strtol.c \ - strtoll.c strtoul.c strtoull.c system.c tfind.c tsearch.c \ + calloc.c cfree.c exit.c ecvt.c gcvt.c getenv.c getopt.c getopt_long.c \ + getsubopt.c heapsort.c l64a.c malloc.c merge.c multibyte.c putenv.c = + qsort.c radixsort.c rand.c random.c realpath.c setenv.c strtod.c \ + strtol.c strtoll.c strtoul.c strtoull.c system.c tfind.c tsearch.c \ _rand48.c drand48.c erand48.c jrand48.c lcong48.c lrand48.c \ mrand48.c nrand48.c seed48.c srand48.c qabs.c qdiv.c @@ -33,13 +33,14 @@ SRCS+= abs.c div.c labs.c ldiv.c .endif MAN+= a64l.3 abort.3 abs.3 alloca.3 atexit.3 atof.3 atoi.3 atol.3 atoll.3 \ - bsearch.3 div.3 ecvt.3 exit.3 getenv.3 getopt.3 getsubopt.3 labs.3 \ - ldiv.3 malloc.3 memory.3 qabs.3 qdiv.3 qsort.3 radixsort.3 rand48.3 \ - rand.3 random.3 realpath.3 strtod.3 strtol.3 strtoul.3 system.3 \ - tsearch.3 + bsearch.3 div.3 ecvt.3 exit.3 getenv.3 getopt.3 getopt_long.3 \ + getsubopt.3 labs.3 ldiv.3 malloc.3 memory.3 qabs.3 qdiv.3 qsort.3 \ + radixsort.3 rand48.3 rand.3 random.3 realpath.3 strtod.3 strtol.3 \ + strtoul.3 system.3 tsearch.3 MLINKS+=ecvt.3 fcvt.3 ecvt.3 gcvt.3 MLINKS+=getenv.3 setenv.3 getenv.3 unsetenv.3 getenv.3 putenv.3 +MLINKS+=getopt_long.3 getopt_long_only.3 MLINKS+=malloc.3 free.3 malloc.3 realloc.3 malloc.3 calloc.3 MLINKS+=malloc.3 cfree.3 malloc.3 malloc.conf.5 MLINKS+=qsort.3 heapsort.3 qsort.3 mergesort.3 diff --git a/lib/libc/stdlib/getopt_long.3 b/lib/libc/stdlib/getopt_long.3 new file mode 100644 index 00000000000..d55f4ead533 --- /dev/null +++ b/lib/libc/stdlib/getopt_long.3 @@ -0,0 +1,326 @@ +.\" $OpenBSD: getopt_long.3,v 1.1 2002/12/03 20:24:30 millert Exp $ +.\" $NetBSD: getopt_long.3,v 1.11 2002/10/02 10:54:19 wiz Exp $ +.\" +.\" Copyright (c) 1988, 1991, 1993 +.\" 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. +.\" +.\" @(#)getopt.3 8.5 (Berkeley) 4/27/95 +.\" +.Dd April 1, 2000 +.Dt GETOPT_LONG 3 +.Os +.Sh NAME +.Nm getopt_long , +.Nm getopt_long_only +.Nd get long options from command line argument list +.Sh SYNOPSIS +.Fd #include <getopt.h> +.Vt extern char *optarg; +.Vt extern int optind; +.Vt extern int optopt; +.Vt extern int opterr; +.Vt extern int optreset; +.Ft int +.Fn getopt_long "int argc" "char * const *argv" "const char *optstring" "struct option *long options" "int *index" +.Ft int +.Fn getopt_long_only "int argc" "char * const *argv" "const char *optstring" "struct option *long options" "int *index" +.Sh DESCRIPTION +The +.Fn getopt_long +function is similar to +.Xr getopt 3 +but it accepts options in two forms: words and characters. +The +.Fn getopt_long +function provides a superset of of the functionality of +.Xr getopt 3 . +.Fn getopt_long +can be used in two ways. +In the first way, every long option understood by the program has a +corresponding short option, and the option structure is only used to +translate from long options to short options. +When used in this fashion, +.Fn getopt_long +behaves identically to +.Xr getopt 3 . +This is a good way to add long option processing to an existing program +with the minimum of rewriting. +.Pp +In the second mechanism, a long option sets a flag in the +.Fa option +structure passed, or will store a pointer to the command line argument +in the +.Fa option +structure passed to it for options that take arguments. +Additionally, the long option's argument may be specified as a single +argument with an equal sign, e.g. +.Bd -literal +myprogram --myoption=somevalue +.Ed +.Pp +When a long option is processed the call to +.Fn getopt_long +will return 0. +For this reason, long option processing without +shortcuts is not backwards compatible with +.Xr getopt 3 . +.Pp +It is possible to combine these methods, providing for long options +processing with short option equivalents for some options. +Less frequently used options would be processed as long options only. +.Pp +The +.Fn getopt_long +call requires a structure to be initialized describing the long +options. +The structure is: +.Bd -literal +struct option { + char *name; + int has_arg; + int *flag; + int val; +}; +.Ed +.Pp +The +.Fa name +field should contain the option name without the leading double dash. +.Pp +The +.Fa has_arg +field should be one of: +.Bl -tag -width "optional_argument" +.It Li no_argument +no argument to the option is expect. +.It Li required_argument +an argument to the option is required. +.It Li optional_argument +an argument to the option may be presented. +.El +.Pp +If +.Fa flag +is not +.Dv NULL , +then the integer pointed to by it will be set to the value in the +.Fa val +field. +If the +.Fa flag +field is +.Dv NULL , +then the +.Fa val +field will be returned. +Setting +.Fa flag +to +.Dv NULL +and setting +.Fa val +to the corresponding short option will make this function act just +like +.Xr getopt 3 . +.Pp +The +.Fn getopt_long_only +function behaves identically to +.Fn getopt_long +with the exception that long options may start with +.Sq - +in addition to +.Sq -- . +If an option starting with +.Sq - +does not match a long option but does match a single-character option, +the single-character option is returned. +.Sh EXAMPLES +.Bd -literal -compact +int bflag, ch, fd; +int daggerset; + +/* options descriptor */ +static struct option longopts[] = { + { "buffy", no_argument, 0, 'b' }, + { "fluoride", required_argument, 0, 'f' }, + { "daggerset", no_argument, &daggerset, 1 }, + { 0, 0, 0, 0 } +}; + +bflag = 0; +while ((ch = getopt_long(argc, argv, "bf:", longopts, NULL)) != -1) + switch(ch) { + case 'b': + bflag = 1; + break; + case 'f': + if ((fd = open(optarg, O_RDONLY, 0)) == -1) + err(1, "unable to open %s", optarg); + break; + case 0: + if (daggerset) { + fprintf(stderr,"Buffy will use her dagger to " + "apply fluoride to dracula's teeth\en"); + } + break; + case '?': + default: + usage(); +} +argc -= optind; +argv += optind; +.Ed +.Sh IMPLEMENTATION DIFFERENCES +This section describes differences to the GNU implementation +found in glibc-2.1.3: +.Bl -tag -width "xxx" +.It Li o +handling of - as first char of option string in presence of +environment variable POSIXLY_CORRECT: +.Bl -tag -width "OpenBSD" +.It Li GNU +ignores POSIXLY_CORRECT and returns non-options as +arguments to option '\e1'. +.It Li OpenBSD +honors POSIXLY_CORRECT and stops at the first non-option. +.El +.It Li o +handling of :: in options string in presence of POSIXLY_CORRECT: +.Bl -tag -width "OpenBSD" +.It Li Both +GNU and OpenBSD ignore POSIXLY_CORRECT here and take :: to +mean the preceding option takes an optional argument. +.El +.It Li o +return value in case of missing argument if first character +(after + or -) in option string is not ':': +.Bl -tag -width "OpenBSD" +.It Li GNU +returns '?' +.It OpenBSD +returns ':' (since OpenBSD's getopt does). +.El +.It Li o +handling of --a in getopt: +.Bl -tag -width "OpenBSD" +.It Li GNU +parses this as option '-', option 'a'. +.It Li OpenBSD +parses this as '--', and returns -1 (ignoring the a). (Because +the original getopt does.) +.El +.It Li o +setting of optopt for long options with flag != +.Dv NULL : +.Bl -tag -width "OpenBSD" +.It Li GNU +sets optopt to val. +.It Li OpenBSD +sets optopt to 0 (since val would never be returned). +.El +.It Li o +handling of -W with W; in option string in getopt (not getopt_long): +.Bl -tag -width "OpenBSD" +.It Li GNU +causes a segfault. +.It Li OpenBSD +returns \-1, with optind pointing past the argument of -W +(as if `-W arg' were `--arg', and thus '--' had been found). +.\" How should we treat W; in the option string when called via +.\" getopt? Ignore the ';' or treat it as a ':'? Issue a warning? +.El +.It Li o +setting of optarg for long options without an argument that are +invoked via -W (W; in option string): +.Bl -tag -width "OpenBSD" +.It Li GNU +sets optarg to the option name (the argument of -W). +.It Li OpenBSD +sets optarg to +.Dv NULL +(the argument of the long option). +.El +.It Li o +handling of -W with an argument that is not (a prefix to) a known +long option (W; in option string): +.Bl -tag -width "OpenBSD" +.It Li GNU +returns -W with optarg set to the unknown option. +.It Li OpenBSD +treats this as an error (unknown option) and returns '?' with +optopt set to 0 and optarg set to +.Dv NULL +(as GNU's man page documents). +.El +.It Li o +The error messages are different. +.It Li o +OpenBSD does not permute the argument vector at the same points in +the calling sequence as GNU does. +The aspects normally used by the caller +(ordering after \-1 is returned, value of optind relative +to current positions) are the same, though. +(We do fewer variable swaps.) +.El +.Sh ENVIRONMENT +.Bl -tag -width POSIXLY_CORRECT +.It Ev POSIXLY_CORRECT +If set, option processing stops when the first non-option is found and +a leading +.Sq - +or +.Sq + +in the +.Ar optstring +is ignored. +.El +.Sh SEE ALSO +.Xr getopt 3 +.Sh HISTORY +The +.Fn getopt_long +and +.Fn getopt_long_only +functions first appeared in GNU libiberty. +This implementation first appeared in +.Ox 3.3 . +.Sh BUGS +The +.Ar argv +argument is not really +.Dv const +as its elements may be permuted (unless +.Ev POSIXLY_CORRECT +is set). +.Pp +In a future release, this implementation should completely replace +.Xr getopt 3 . diff --git a/lib/libc/stdlib/getopt_long.c b/lib/libc/stdlib/getopt_long.c new file mode 100644 index 00000000000..1256e5d655d --- /dev/null +++ b/lib/libc/stdlib/getopt_long.c @@ -0,0 +1,510 @@ +/* $OpenBSD: getopt_long.c,v 1.1 2002/12/03 20:24:30 millert Exp $ */ +/* $NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv Exp $ */ + +/*- + * Copyright (c) 2000 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Dieter Baron and Thomas Klausner. + * + * 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 NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char *rcsid = "$OpenBSD: getopt_long.c,v 1.1 2002/12/03 20:24:30 millert Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include <err.h> +#include <errno.h> +#include <getopt.h> +#include <stdlib.h> +#include <string.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 */ + +#define PRINT_ERROR ((opterr) && (*options != ':')) + +#define FLAG_PERMUTE 0x01 +#define FLAG_ALLARGS 0x02 +#define FLAG_LONGONLY 0x04 + +/* return values */ +#define BADCH (int)'?' +#define BADARG ((*options == ':') ? (int)':' : (int)'?') +#define INORDER (int)1 + +#define EMSG "" + +static int getopt_internal(int, char * const *, const char *, int); +static int getopt_long_internal(int, char * const *, const char *, + const struct option *, int *, int); +static int gcd(int, int); +static void permute_args(int, int, int, char * const *); + +static char *place = EMSG; /* option letter processing */ + +/* XXX: set optreset to 1 rather than these two */ +static int nonopt_start = -1; /* first non option argument (for permute) */ +static int nonopt_end = -1; /* first option after non options (for permute) */ + +/* Error messages */ +static const char recargchar[] = "option requires an argument -- %c"; +static const char recargstring[] = "option requires an argument -- %s"; +static const char ambig[] = "ambiguous option -- %.*s"; +static const char noarg[] = "option doesn't take an argument -- %.*s"; +static const char illoptchar[] = "unknown option -- %c"; +static const char illoptstring[] = "unknown option -- %s"; + +/* + * Compute the greatest common divisor of a and b. + */ +static int +gcd(a, b) + int a; + int b; +{ + int c; + + c = a % b; + while (c != 0) { + a = b; + b = c; + c = a % b; + } + + return b; +} + +/* + * Exchange the block from nonopt_start to nonopt_end with the block + * from nonopt_end to opt_end (keeping the same order of arguments + * in each block). + */ +static void +permute_args(panonopt_start, panonopt_end, opt_end, nargv) + int panonopt_start; + int panonopt_end; + int opt_end; + char * const *nargv; +{ + int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos; + char *swap; + + /* + * compute lengths of blocks and number and size of cycles + */ + nnonopts = panonopt_end - panonopt_start; + nopts = opt_end - panonopt_end; + ncycle = gcd(nnonopts, nopts); + cyclelen = (opt_end - panonopt_start) / ncycle; + + for (i = 0; i < ncycle; i++) { + cstart = panonopt_end+i; + pos = cstart; + for (j = 0; j < cyclelen; j++) { + if (pos >= panonopt_end) + pos -= nnonopts; + else + pos += nopts; + swap = nargv[pos]; + /* LINTED const cast */ + ((char **) nargv)[pos] = nargv[cstart]; + /* LINTED const cast */ + ((char **)nargv)[cstart] = swap; + } + } +} + +/* + * getopt_internal -- + * Parse argc/argv argument vector. Called by user level routines. + * Returns -2 if -- is found (can be long option or end of options marker). + */ +static int +getopt_internal(nargc, nargv, options, flags) + int nargc; + char * const *nargv; + const char *options; + int flags; +{ + char *oli; /* option letter list index */ + int optchar; + + optarg = NULL; + + /* + * XXX Some programs (like rsyncd) expect to be able to + * XXX re-initialize optind to 0 and have getopt_long(3) + * XXX properly function again. Work around this braindamage. + */ + if (optind == 0) + optind = 1; + + if (optreset) + nonopt_start = nonopt_end = -1; +start: + if (optreset || !*place) { /* update scanning pointer */ + optreset = 0; + if (optind >= nargc) { /* end of argument vector */ + place = EMSG; + if (nonopt_end != -1) { + /* do permutation, if we have to */ + permute_args(nonopt_start, nonopt_end, + optind, nargv); + optind -= nonopt_end - nonopt_start; + } + else if (nonopt_start != -1) { + /* + * If we skipped non-options, set optind + * to the first of them. + */ + optind = nonopt_start; + } + nonopt_start = nonopt_end = -1; + return -1; + } + if ((*(place = nargv[optind]) != '-') + || (place[1] == '\0')) { /* found non-option */ + place = EMSG; + if (flags & FLAG_ALLARGS) { + /* + * GNU extension: + * return non-option as argument to option 1 + */ + optarg = nargv[optind++]; + return INORDER; + } + if (!(flags & FLAG_PERMUTE)) { + /* + * If no permutation wanted, stop parsing + * at first non-option. + */ + return -1; + } + /* do permutation */ + if (nonopt_start == -1) + nonopt_start = optind; + else if (nonopt_end != -1) { + permute_args(nonopt_start, nonopt_end, + optind, nargv); + nonopt_start = optind - + (nonopt_end - nonopt_start); + nonopt_end = -1; + } + optind++; + /* process next argument */ + goto start; + } + if (nonopt_start != -1 && nonopt_end == -1) + nonopt_end = optind; + if (place[1] && *++place == '-') { /* found "--" */ + place++; + return -2; + } + } + if ((optchar = (int)*place++) == (int)':' || + (oli = strchr(options, optchar)) == NULL) { + /* could it be a long option with a single '-'? */ + if (flags & FLAG_LONGONLY) + return -2; + /* option letter unknown or ':' */ + if (!*place) + ++optind; + if (PRINT_ERROR) + warnx(illoptchar, optchar); + optopt = optchar; + return BADCH; + } + if (optchar == 'W' && oli[1] == ';') { /* -W long-option */ + /* XXX: what if no long options provided (called by getopt)? */ + if (*place) + return -2; + + if (++optind >= nargc) { /* no arg */ + place = EMSG; + if (PRINT_ERROR) + warnx(recargchar, optchar); + optopt = optchar; + return BADARG; + } else /* white space */ + place = nargv[optind]; + /* + * Handle -W arg the same as --arg (which causes getopt to + * stop parsing). + */ + return -2; + } + if (*++oli != ':') { /* doesn't take argument */ + if (!*place) + ++optind; + } else { /* takes (optional) argument */ + optarg = NULL; + if (*place) /* no white space */ + optarg = place; + /* XXX: disable test for :: if PC? (GNU doesn't) */ + else if (oli[1] != ':') { /* arg not optional */ + if (++optind >= nargc) { /* no arg */ + place = EMSG; + if (PRINT_ERROR) + warnx(recargchar, optchar); + optopt = optchar; + return BADARG; + } else + optarg = nargv[optind]; + } + place = EMSG; + ++optind; + } + /* dump back option letter */ + return optchar; +} + +#ifdef REPLACE_GETOPT +/* + * getopt -- + * Parse argc/argv argument vector. + * + * [eventually this will replace the BSD getopt] + */ +int +getopt(nargc, nargv, options) + int nargc; + char * const *nargv; + const char *options; +{ + int retval; + + if ((retval = getopt_internal(nargc, nargv, options, 0)) == -2) { + ++optind; + /* + * We found an option (--), so if we skipped non-options, + * we have to permute. + */ + if (nonopt_end != -1) { + permute_args(nonopt_start, nonopt_end, optind, + nargv); + optind -= nonopt_end - nonopt_start; + } + nonopt_start = nonopt_end = -1; + retval = -1; + } + return retval; +} +#endif /* REPLACE_GETOPT */ + +/* + * getopt_long_internal -- + * Parse argc/argv argument vector. + */ +static int +getopt_long_internal(nargc, nargv, options, long_options, idx, flags) + int nargc; + char * const *nargv; + const char *options; + const struct option *long_options; + int *idx; + int flags; +{ + int retval; + + /* + * Disable GNU extensions if POSIXLY_CORRECT is set or options + * string begins with a '+'. + */ + if (getenv("POSIXLY_CORRECT")) { + if (*options == '+' || *options == '-') + options++; + } else { + if (*options == '+') { + options++; + } else { + flags |= FLAG_PERMUTE; + if (*options == '-') { + flags |= FLAG_ALLARGS; + options++; + } + } + } + + if ((retval = getopt_internal(nargc, nargv, options, flags)) == -2) { + char *current_argv, *has_equal; + size_t current_argv_len; + int i, match; + + current_argv = place; + match = -1; + + optind++; + place = EMSG; + + if (*current_argv == '\0') { /* found "--" */ + /* + * We found an option (--), so if we skipped + * non-options, we have to permute. + */ + if (nonopt_end != -1) { + permute_args(nonopt_start, nonopt_end, + optind, nargv); + optind -= nonopt_end - nonopt_start; + } + nonopt_start = nonopt_end = -1; + return -1; + } + if ((has_equal = strchr(current_argv, '=')) != NULL) { + /* argument found (--option=arg) */ + current_argv_len = has_equal - current_argv; + has_equal++; + } else + current_argv_len = strlen(current_argv); + + for (i = 0; long_options[i].name; i++) { + /* find matching long option */ + if (strncmp(current_argv, long_options[i].name, + current_argv_len)) + continue; + + if (strlen(long_options[i].name) == + (unsigned)current_argv_len) { + /* exact match */ + match = i; + break; + } + if (match == -1) /* partial match */ + match = i; + else { + /* ambiguous abbreviation */ + if (PRINT_ERROR) + warnx(ambig, (int)current_argv_len, + current_argv); + optopt = 0; + return BADCH; + } + } + if (match != -1) { /* option found */ + if (long_options[match].has_arg == no_argument + && has_equal) { + if (PRINT_ERROR) + warnx(noarg, (int)current_argv_len, + current_argv); + /* + * XXX: GNU sets optopt to val regardless of + * flag + */ + if (long_options[match].flag == NULL) + optopt = long_options[match].val; + else + optopt = 0; + return BADARG; + } + if (long_options[match].has_arg == required_argument || + long_options[match].has_arg == optional_argument) { + if (has_equal) + optarg = has_equal; + else if (long_options[match].has_arg == + required_argument) { + /* + * optional argument doesn't use + * next nargv + */ + optarg = nargv[optind++]; + } + } + if ((long_options[match].has_arg == required_argument) + && (optarg == NULL)) { + /* + * Missing argument; leading ':' + * indicates no error should be generated + */ + if (PRINT_ERROR) + warnx(recargstring, current_argv); + /* + * XXX: GNU sets optopt to val regardless + * of flag + */ + if (long_options[match].flag == NULL) + optopt = long_options[match].val; + else + optopt = 0; + --optind; + return BADARG; + } + } else { /* unknown option */ + if (PRINT_ERROR) + warnx(illoptstring, current_argv); + optopt = 0; + return BADCH; + } + if (long_options[match].flag) { + *long_options[match].flag = long_options[match].val; + retval = 0; + } else + retval = long_options[match].val; + if (idx) + *idx = match; + } + return retval; +} + +/* + * getopt_long -- + * Parse argc/argv argument vector. + */ +int +getopt_long(nargc, nargv, options, long_options, idx) + int nargc; + char * const *nargv; + const char *options; + const struct option *long_options; + int *idx; +{ + + return getopt_long_internal(nargc, nargv, options, long_options, idx, 0); +} + +/* + * getopt_long_only -- + * Parse argc/argv argument vector. + */ +int +getopt_long_only(nargc, nargv, options, long_options, idx) + int nargc; + char * const *nargv; + const char *options; + const struct option *long_options; + int *idx; +{ + + return getopt_long_internal(nargc, nargv, options, long_options, idx, + FLAG_LONGONLY); +} |