+/* $OpenBSD: getopt_long.c,v 1.21 2006/09/22 17:22:05 millert Exp $ */
/* $NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv Exp $ */
-/* $FreeBSD: src/lib/libc/stdlib/getopt_long.c,v 1.2 2002/10/16 22:18:42 alfred Exp $ */
+/*
+ * Copyright (c) 2002 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
* POSSIBILITY OF SUCH DAMAGE.
*/
-#include <sys/cdefs.h>
+#if 0
#if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv Exp $");
+static char *rcsid = "$OpenBSD: getopt_long.c,v 1.16 2004/02/04 18:17:25 millert Exp $";
#endif /* LIBC_SCCS and not lint */
+#endif
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/lib/libc/stdlib/getopt_long.c,v 1.15 2006/09/23 14:48:31 ache Exp $");
-#include "namespace.h"
-
-#include <assert.h>
#include <err.h>
#include <errno.h>
#include <getopt.h>
#include <stdlib.h>
#include <string.h>
-/* not part of the original file */
-#ifndef _DIAGASSERT
-#define _DIAGASSERT(X)
-#endif
+#define GNU_COMPATIBLE /* Be more compatible, configure's use us! */
-#if HAVE_CONFIG_H && !HAVE_GETOPT_LONG && !HAVE_DECL_OPTIND
-#define REPLACE_GETOPT
+#if 0 /* we prefer to keep our getopt(3) */
+#define REPLACE_GETOPT /* use this getopt as the system getopt(3) */
#endif
#ifdef REPLACE_GETOPT
-#ifdef __weak_alias
-__weak_alias(getopt,_getopt)
-#endif
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 */
-#elif HAVE_CONFIG_H && !HAVE_DECL_OPTRESET
-static int optreset;
#endif
-#ifdef __weak_alias
-__weak_alias(getopt_long,_getopt_long)
-#endif
+#define PRINT_ERROR ((opterr) && (*options != ':'))
-#if !HAVE_GETOPT_LONG
-#define IGNORE_FIRST (*options == '-' || *options == '+')
-#define PRINT_ERROR ((opterr) && ((*options != ':') \
- || (IGNORE_FIRST && options[1] != ':')))
-#define IS_POSIXLY_CORRECT (getenv("POSIXLY_CORRECT") != NULL)
-#define PERMUTE (!IS_POSIXLY_CORRECT && !IGNORE_FIRST)
-/* XXX: GNU ignores PC if *options == '-' */
-#define IN_ORDER (!IS_POSIXLY_CORRECT && *options == '-')
+#define FLAG_PERMUTE 0x01 /* permute non-options to the end of argv */
+#define FLAG_ALLARGS 0x02 /* treat non-options as args to option "-1" */
+#define FLAG_LONGONLY 0x04 /* operate as getopt_long_only */
/* return values */
-#define BADCH (int)'?'
-#define BADARG ((IGNORE_FIRST && options[1] == ':') \
- || (*options == ':') ? (int)':' : (int)'?')
-#define INORDER (int)1
+#define BADCH (int)'?'
+#define BADARG ((*options == ':') ? (int)':' : (int)'?')
+#define INORDER (int)1
-#define EMSG ""
+#define EMSG ""
-static int getopt_internal(int, char * const *, const char *);
+#ifdef GNU_COMPATIBLE
+#define NO_PREFIX (-1)
+#define D_PREFIX 0
+#define DD_PREFIX 1
+#define W_PREFIX 2
+#endif
+
+static int getopt_internal(int, char * const *, const char *,
+ const struct option *, int *, int);
+static int parse_long_options(char * const *, const char *,
+ const struct option *, int *, int, int);
static int gcd(int, int);
static void permute_args(int, int, int, char * const *);
/* Error messages */
static const char recargchar[] = "option requires an argument -- %c";
+static const char illoptchar[] = "illegal option -- %c"; /* From P1003.2 */
+#ifdef GNU_COMPATIBLE
+static int dash_prefix = NO_PREFIX;
+static const char gnuoptchar[] = "invalid option -- %c";
+
+static const char recargstring[] = "option `%s%s' requires an argument";
+static const char ambig[] = "option `%s%.*s' is ambiguous";
+static const char noarg[] = "option `%s%.*s' doesn't allow an argument";
+static const char illoptstring[] = "unrecognized option `%s%s'";
+#else
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";
-
+#endif
/*
* Compute the greatest common divisor of a and b.
*/
static int
-gcd(a, b)
- int a;
- int b;
+gcd(int a, int b)
{
int c;
b = c;
c = a % b;
}
-
- return b;
+
+ return (b);
}
/*
* 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;
+permute_args(int panonopt_start, int panonopt_end, int opt_end,
+ char * const *nargv)
{
int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos;
char *swap;
- _DIAGASSERT(nargv != NULL);
-
/*
* compute lengths of blocks and number and size of cycles
*/
}
}
+/*
+ * parse_long_options --
+ * Parse long options in argc/argv argument vector.
+ * Returns -1 if short_too is set and the option does not match long_options.
+ */
+static int
+parse_long_options(char * const *nargv, const char *options,
+ const struct option *long_options, int *idx, int short_too, int flags)
+{
+ char *current_argv, *has_equal;
+#ifdef GNU_COMPATIBLE
+ char *current_dash;
+#endif
+ size_t current_argv_len;
+ int i, match, exact_match, second_partial_match;
+
+ current_argv = place;
+#ifdef GNU_COMPATIBLE
+ switch (dash_prefix) {
+ case D_PREFIX:
+ current_dash = "-";
+ break;
+ case DD_PREFIX:
+ current_dash = "--";
+ break;
+ case W_PREFIX:
+ current_dash = "-W ";
+ break;
+ default:
+ current_dash = "";
+ break;
+ }
+#endif
+ match = -1;
+ exact_match = 0;
+ second_partial_match = 0;
+
+ optind++;
+
+ 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) == current_argv_len) {
+ /* exact match */
+ match = i;
+ exact_match = 1;
+ break;
+ }
+ /*
+ * If this is a known short option, don't allow
+ * a partial match of a single character.
+ */
+ if (short_too && current_argv_len == 1)
+ continue;
+
+ if (match == -1) /* first partial match */
+ match = i;
+ else if ((flags & FLAG_LONGONLY) ||
+ long_options[i].has_arg !=
+ long_options[match].has_arg ||
+ long_options[i].flag != long_options[match].flag ||
+ long_options[i].val != long_options[match].val)
+ second_partial_match = 1;
+ }
+ if (!exact_match && second_partial_match) {
+ /* ambiguous abbreviation */
+ if (PRINT_ERROR)
+ warnx(ambig,
+#ifdef GNU_COMPATIBLE
+ current_dash,
+#endif
+ (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,
+#ifdef GNU_COMPATIBLE
+ current_dash,
+#endif
+ (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;
+#ifdef GNU_COMPATIBLE
+ return (BADCH);
+#else
+ return (BADARG);
+#endif
+ }
+ 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,
+#ifdef GNU_COMPATIBLE
+ current_dash,
+#endif
+ 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 (short_too) {
+ --optind;
+ return (-1);
+ }
+ if (PRINT_ERROR)
+ warnx(illoptstring,
+#ifdef GNU_COMPATIBLE
+ current_dash,
+#endif
+ current_argv);
+ optopt = 0;
+ return (BADCH);
+ }
+ if (idx)
+ *idx = match;
+ if (long_options[match].flag) {
+ *long_options[match].flag = long_options[match].val;
+ return (0);
+ } else
+ return (long_options[match].val);
+}
+
/*
* 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)
- int nargc;
- char * const *nargv;
- const char *options;
+getopt_internal(int nargc, char * const *nargv, const char *options,
+ const struct option *long_options, int *idx, int flags)
{
char *oli; /* option letter list index */
- int optchar;
+ int optchar, short_too;
+ int posixly_correct; /* no static, can be changed on the fly */
- _DIAGASSERT(nargv != NULL);
- _DIAGASSERT(options != NULL);
+ if (options == NULL)
+ return (-1);
- optarg = NULL;
+ /*
+ * Disable GNU extensions if POSIXLY_CORRECT is set or options
+ * string begins with a '+'.
+ */
+ posixly_correct = (getenv("POSIXLY_CORRECT") != NULL);
+#ifdef GNU_COMPATIBLE
+ if (*options == '-')
+ flags |= FLAG_ALLARGS;
+ else if (posixly_correct || *options == '+')
+ flags &= ~FLAG_PERMUTE;
+#else
+ if (posixly_correct || *options == '+')
+ flags &= ~FLAG_PERMUTE;
+ else if (*options == '-')
+ flags |= FLAG_ALLARGS;
+#endif
+ if (*options == '+' || *options == '-')
+ options++;
/*
- * 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.
+ * XXX Some GNU programs (like cvs) set optind to 0 instead of
+ * XXX using optreset. Work around this braindamage.
*/
if (optind == 0)
- optind = 1;
+ optind = optreset = 1;
+ optarg = NULL;
if (optreset)
nonopt_start = nonopt_end = -1;
start:
optind = nonopt_start;
}
nonopt_start = nonopt_end = -1;
- return -1;
+ return (-1);
}
- if ((*(place = nargv[optind]) != '-')
- || (place[1] == '\0')) { /* found non-option */
- place = EMSG;
- if (IN_ORDER) {
+ if (*(place = nargv[optind]) != '-' ||
+#ifdef GNU_COMPATIBLE
+ place[1] == '\0') {
+#else
+ (place[1] == '\0' && strchr(options, '-') == NULL)) {
+#endif
+ place = EMSG; /* found non-option */
+ if (flags & FLAG_ALLARGS) {
/*
- * GNU extension:
+ * GNU extension:
* return non-option as argument to option 1
*/
optarg = nargv[optind++];
- return INORDER;
+ return (INORDER);
}
- if (!PERMUTE) {
+ if (!(flags & FLAG_PERMUTE)) {
/*
- * if no permutation wanted, stop parsing
- * at first non-option
+ * If no permutation wanted, stop parsing
+ * at first non-option.
*/
- return -1;
+ return (-1);
}
/* do permutation */
if (nonopt_start == -1)
}
if (nonopt_start != -1 && nonopt_end == -1)
nonopt_end = optind;
- if (place[1] && *++place == '-') { /* found "--" */
- place++;
- return -2;
+
+ /*
+ * If we have "-" do nothing, if "--" we are done.
+ */
+ if (place[1] != '\0' && *++place == '-' && place[1] == '\0') {
+ optind++;
+ place = EMSG;
+ /*
+ * 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);
}
}
+
+ /*
+ * Check long options if:
+ * 1) we were passed some
+ * 2) the arg is not just "-"
+ * 3) either the arg starts with -- we are getopt_long_only()
+ */
+ if (long_options != NULL && place != nargv[optind] &&
+ (*place == '-' || (flags & FLAG_LONGONLY))) {
+ short_too = 0;
+#ifdef GNU_COMPATIBLE
+ dash_prefix = D_PREFIX;
+#endif
+ if (*place == '-') {
+ place++; /* --foo long option */
+#ifdef GNU_COMPATIBLE
+ dash_prefix = DD_PREFIX;
+#endif
+ } else if (*place != ':' && strchr(options, *place) != NULL)
+ short_too = 1; /* could be short option too */
+
+ optchar = parse_long_options(nargv, options, long_options,
+ idx, short_too, flags);
+ if (optchar != -1) {
+ place = EMSG;
+ return (optchar);
+ }
+ }
+
if ((optchar = (int)*place++) == (int)':' ||
- (oli = strchr(options + (IGNORE_FIRST ? 1 : 0), optchar)) == NULL) {
- /* option letter unknown or ':' */
+ (optchar == (int)'-' && *place != '\0') ||
+ (oli = strchr(options, optchar)) == NULL) {
+ /*
+ * If the user specified "-" and '-' isn't listed in
+ * options, return -1 (non-option) as per POSIX.
+ * Otherwise, it is an unknown option character (or ':').
+ */
+ if (optchar == (int)'-' && *place == '\0')
+ return (-1);
if (!*place)
++optind;
+#ifdef GNU_COMPATIBLE
+ if (PRINT_ERROR)
+ warnx(posixly_correct ? illoptchar : gnuoptchar,
+ optchar);
+#else
if (PRINT_ERROR)
warnx(illoptchar, optchar);
+#endif
optopt = optchar;
- return BADCH;
+ 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 */
+ if (long_options != NULL && optchar == 'W' && oli[1] == ';') {
+ /* -W long-option */
+ if (*place) /* no space */
+ /* NOTHING */;
+ else if (++optind >= nargc) { /* no arg */
place = EMSG;
if (PRINT_ERROR)
warnx(recargchar, optchar);
optopt = optchar;
- return BADARG;
+ return (BADARG);
} else /* white space */
place = nargv[optind];
- /*
- * Handle -W arg the same as --arg (which causes getopt to
- * stop parsing).
- */
- return -2;
+#ifdef GNU_COMPATIBLE
+ dash_prefix = W_PREFIX;
+#endif
+ optchar = parse_long_options(nargv, options, long_options,
+ idx, 0, flags);
+ place = EMSG;
+ return (optchar);
}
if (*++oli != ':') { /* doesn't take argument */
if (!*place)
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;
+ return (BADARG);
} else
optarg = nargv[optind];
}
++optind;
}
/* dump back option letter */
- return optchar;
+ return (optchar);
}
#ifdef REPLACE_GETOPT
* getopt --
* Parse argc/argv argument vector.
*
- * [eventually this will replace the real getopt]
+ * [eventually this will replace the BSD getopt]
*/
int
-getopt(nargc, nargv, options)
- int nargc;
- char * const *nargv;
- const char *options;
+getopt(int nargc, char * const *nargv, const char *options)
{
- int retval;
-
- _DIAGASSERT(nargv != NULL);
- _DIAGASSERT(options != NULL);
- if ((retval = getopt_internal(nargc, nargv, options)) == -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;
+ /*
+ * We don't pass FLAG_PERMUTE to getopt_internal() since
+ * the BSD getopt(3) (unlike GNU) has never done this.
+ *
+ * Furthermore, since many privileged programs call getopt()
+ * before dropping privileges it makes sense to keep things
+ * as simple (and bug-free) as possible.
+ */
+ return (getopt_internal(nargc, nargv, options, NULL, NULL, 0));
}
-#endif
+#endif /* REPLACE_GETOPT */
/*
* 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;
+getopt_long(int nargc, char * const *nargv, const char *options,
+ const struct option *long_options, int *idx)
{
- int retval;
-
- _DIAGASSERT(nargv != NULL);
- _DIAGASSERT(options != NULL);
- _DIAGASSERT(long_options != NULL);
- /* idx may be NULL */
-
- if ((retval = getopt_internal(nargc, nargv, options)) == -2) {
- char *current_argv, *has_equal;
- size_t current_argv_len;
- int i, match;
- current_argv = place;
- match = -1;
+ return (getopt_internal(nargc, nargv, options, long_options, idx,
+ FLAG_PERMUTE));
+}
- optind++;
- place = EMSG;
+/*
+ * getopt_long_only --
+ * Parse argc/argv argument vector.
+ */
+int
+getopt_long_only(int nargc, char * const *nargv, const char *options,
+ const struct option *long_options, int *idx)
+{
- 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;
+ return (getopt_internal(nargc, nargv, options, long_options, idx,
+ FLAG_PERMUTE|FLAG_LONGONLY));
}
-#endif /* !GETOPT_LONG */
projects / apple / libc.git / blobdiff