Replace getopt_long with musl version.

5 files changed, 148 insertions, 519 deletions

diff --git a/system/lib/libc.symbols b/system/lib/libc.symbols
index cfd10210..eda8a802 100644
--- a/system/lib/libc.symbols
+++ b/system/lib/libc.symbols
@@ -55,9 +55,6 @@
          T err
          T errx
          W free
-         T getopt
-         T getopt_long
-         T getopt_long_only
          W independent_calloc
          W independent_comalloc
          W mallinfo
@@ -71,11 +68,6 @@
          W malloc_usable_size
          W mallopt
          W memalign
-         C optarg
-         D opterr
-         D optind
-         D optopt
-         C optreset
          W posix_memalign
          W pvalloc
          W realloc
diff --git a/system/lib/libc/musl/src/misc/getopt.c b/system/lib/libc/musl/src/misc/getopt.c
new file mode 100644
index 00000000..f1a1639c
--- /dev/null
+++ b/system/lib/libc/musl/src/misc/getopt.c
@@ -0,0 +1,74 @@
+#include <unistd.h>
+#include <wchar.h>
+#include <string.h>
+#include <limits.h>
+#include <stdlib.h>
+#include "libc.h"
+
+char *optarg;
+int optind=1, opterr=1, optopt, __optpos, __optreset=0;
+
+#define optpos __optpos
+weak_alias(__optreset, optreset);
+
+int getopt(int argc, char * const argv[], const char *optstring)
+{
+	int i;
+	wchar_t c, d;
+	int k, l;
+	char *optchar;
+
+	if (!optind || __optreset) {
+		__optreset = 0;
+		__optpos = 0;
+		optind = 1;
+	}
+
+	if (optind >= argc || !argv[optind] || argv[optind][0] != '-' || !argv[optind][1])
+		return -1;
+	if (argv[optind][1] == '-' && !argv[optind][2])
+		return optind++, -1;
+
+	if (!optpos) optpos++;
+	if ((k = mbtowc(&c, argv[optind]+optpos, MB_LEN_MAX)) < 0) {
+		k = 1;
+		c = 0xfffd; /* replacement char */
+	}
+	optchar = argv[optind]+optpos;
+	optopt = c;
+	optpos += k;
+
+	if (!argv[optind][optpos]) {
+		optind++;
+		optpos = 0;
+	}
+
+	for (i=0; (l = mbtowc(&d, optstring+i, MB_LEN_MAX)) && d!=c; i+=l>0?l:1);
+
+	if (d != c) {
+		if (optstring[0] != ':' && opterr) {
+			write(2, argv[0], strlen(argv[0]));
+			write(2, ": illegal option: ", 18);
+			write(2, optchar, k);
+			write(2, "\n", 1);
+		}
+		return '?';
+	}
+	if (optstring[i+1] == ':') {
+		if (optind >= argc) {
+			if (optstring[0] == ':') return ':';
+			if (opterr) {
+				write(2, argv[0], strlen(argv[0]));
+				write(2, ": option requires an argument: ", 31);
+				write(2, optchar, k);
+				write(2, "\n", 1);
+			}
+			return '?';
+		}
+		optarg = argv[optind++] + optpos;
+		optpos = 0;
+	}
+	return c;
+}
+
+weak_alias(getopt, __posix_getopt);
diff --git a/system/lib/libc/musl/src/misc/getopt_long.c b/system/lib/libc/musl/src/misc/getopt_long.c
new file mode 100644
index 00000000..4ef5a5c7
--- /dev/null
+++ b/system/lib/libc/musl/src/misc/getopt_long.c
@@ -0,0 +1,59 @@
+#define _GNU_SOURCE
+#include <stddef.h>
+#include <getopt.h>
+#include <stdio.h>
+
+extern int __optpos, __optreset;
+
+static int __getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly)
+{
+	if (!optind || __optreset) {
+		__optreset = 0;
+		__optpos = 0;
+		optind = 1;
+	}
+	if (optind >= argc || !argv[optind] || argv[optind][0] != '-') return -1;
+	if ((longonly && argv[optind][1]) ||
+		(argv[optind][1] == '-' && argv[optind][2]))
+	{
+		int i;
+		for (i=0; longopts[i].name; i++) {
+			const char *name = longopts[i].name;
+			char *opt = argv[optind]+1;
+			if (*opt == '-') opt++;
+			for (; *name && *name == *opt; name++, opt++);
+			if (*name || (*opt && *opt != '=')) continue;
+			if (*opt == '=') {
+				if (!longopts[i].has_arg) continue;
+				optarg = opt+1;
+			} else {
+				if (longopts[i].has_arg == required_argument) {
+					if (!(optarg = argv[++optind]))
+						return ':';
+				} else optarg = NULL;
+			}
+			optind++;
+			if (idx) *idx = i;
+			if (longopts[i].flag) {
+				*longopts[i].flag = longopts[i].val;
+				return 0;
+			}
+			return longopts[i].val;
+		}
+		if (argv[optind][1] == '-') {
+			optind++;
+			return '?';
+		}
+	}
+	return getopt(argc, argv, optstring);
+}
+
+int getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx)
+{
+	return __getopt_long(argc, argv, optstring, longopts, idx, 0);
+}
+
+int getopt_long_only(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx)
+{
+	return __getopt_long(argc, argv, optstring, longopts, idx, 1);
+}
diff --git a/system/lib/libc/stdlib/getopt_long.c b/system/lib/libc/stdlib/getopt_long.c
deleted file mode 100644
index e149fe0a..00000000
--- a/system/lib/libc/stdlib/getopt_long.c
+++ /dev/null
@@ -1,511 +0,0 @@
-/*	$OpenBSD: getopt_long.c,v 1.25 2011/03/05 22:10:11 guenther Exp $	*/
-/*	$NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv 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.
- *
- * 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.
- *
- * 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.
- */
-
-#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	/* 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		((*options == ':') ? (int)':' : (int)'?')
-#define	INORDER 	(int)1
-
-#define	EMSG		""
-
-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);
-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(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(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;
-		}
-	}
-}
-
-/*
- * 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)
-{
-	char *current_argv, *has_equal;
-	size_t current_argv_len;
-	int i, match;
-
-	current_argv = place;
-	match = -1;
-
-	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;
-			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)	/* 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 (short_too) {
-			--optind;
-			return (-1);
-		}
-		if (PRINT_ERROR)
-			warnx(illoptstring, 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.
- */
-static int
-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, short_too;
-	static int posixly_correct = -1;
-
-	if (options == NULL)
-		return (-1);
-
-	/*
-	 * XXX Some GNU programs (like cvs) set optind to 0 instead of
-	 * XXX using optreset.  Work around this braindamage.
-	 */
-	if (optind == 0)
-		optind = optreset = 1;
-
-	/*
-	 * Disable GNU extensions if POSIXLY_CORRECT is set or options
-	 * string begins with a '+'.
-	 */
-	if (posixly_correct == -1 || optreset)
-		posixly_correct = (getenv("POSIXLY_CORRECT") != NULL);
-	if (*options == '-')
-		flags |= FLAG_ALLARGS;
-	else if (posixly_correct || *options == '+')
-		flags &= ~FLAG_PERMUTE;
-	if (*options == '+' || *options == '-')
-		options++;
-
-	optarg = NULL;
-	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' && strchr(options, '-') == NULL)) {
-			place = EMSG;		/* found non-option */
-			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 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;
-		if (*place == '-')
-			place++;		/* --foo long option */
-		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);
-		if (optchar != -1) {
-			place = EMSG;
-			return (optchar);
-		}
-	}
-
-	if ((optchar = (int)*place++) == (int)':' ||
-	    (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;
-		if (PRINT_ERROR)
-			warnx(illoptchar, optchar);
-		optopt = optchar;
-		return (BADCH);
-	}
-	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);
-		} else				/* white space */
-			place = nargv[optind];
-		optchar = parse_long_options(nargv, options, long_options,
-		    idx, 0);
-		place = EMSG;
-		return (optchar);
-	}
-	if (*++oli != ':') {			/* doesn't take argument */
-		if (!*place)
-			++optind;
-	} else {				/* takes (optional) argument */
-		optarg = NULL;
-		if (*place)			/* no white space */
-			optarg = place;
-		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);
-}
-
-/*
- * getopt --
- *	Parse argc/argv argument vector.
- *
- * [eventually this will replace the BSD getopt]
- */
-int
-getopt(int nargc, char * const *nargv, const char *options)
-{
-
-	/*
-	 * 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));
-}
-
-/*
- * getopt_long --
- *	Parse argc/argv argument vector.
- */
-int
-getopt_long(int nargc, char * const *nargv, const char *options,
-    const struct option *long_options, int *idx)
-{
-
-	return (getopt_internal(nargc, nargv, options, long_options, idx,
-	    FLAG_PERMUTE));
-}
-
-/*
- * 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)
-{
-
-	return (getopt_internal(nargc, nargv, options, long_options, idx,
-	    FLAG_PERMUTE|FLAG_LONGONLY));
-}
diff --git a/system/lib/libcextra.symbols b/system/lib/libcextra.symbols
index c3475e1c..2420215a 100644
--- a/system/lib/libcextra.symbols
+++ b/system/lib/libcextra.symbols
@@ -1,10 +1,14 @@
          T __cosdf
+         T __fputwc_unlocked
          T __intscan
          W __iswctype_l
          T __lgamma_r
          T __lgammaf_r
          T __lgammal_r
          T __memrchr
+         C __optpos
+         D __optreset
+         W __posix_getopt
          T __sindf
          T __strchrnul
          T __strxfrm_l
@@ -19,8 +23,13 @@
          T btowc
          T ecvt
          T fcvt
+         T fputwc
+         W fputwc_unlocked
          T fwprintf
          T gcvt
+         T getopt
+         T getopt_long
+         T getopt_long_only
          T iconv
          T iconv_close
          T iconv_open
@@ -77,6 +86,12 @@
          T memmem
          T mempcpy
          W memrchr
+         C optarg
+         D opterr
+         D optind
+         C optopt
+         W optreset
+         W putwc_unlocked
          T regcomp
          T regerror
          T regexec