/* vi: set sw=4 ts=4: */
/*
* getopt.c - Enhanced implementation of BSD getopt(1)
- * Copyright (c) 1997, 1998, 1999, 2000 Frodo Looijaard <frodol@dds.nl>
+ * Copyright (c) 1997, 1998, 1999, 2000 Frodo Looijaard <frodol@dds.nl>
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-
/*
* Version 1.0-b4: Tue Sep 23 1997. First public release.
* Version 1.0: Wed Nov 19 1997.
* Added NLS support (partly written by Arkadiusz Mickiewicz
* <misiek@misiek.eu.org>)
* Ported to Busybox - Alfred M. Szmidt <ams@trillian.itslinux.org>
- * Removed --version/-V and --help/-h in
+ * Removed --version/-V and --help/-h
* Removed parse_error(), using bb_error_msg() from Busybox instead
* Replaced our_malloc with xmalloc and our_realloc with xrealloc
- *
*/
+//config:config GETOPT
+//config: bool "getopt (5.6 kb)"
+//config: default y
+//config: help
+//config: The getopt utility is used to break up (parse) options in command
+//config: lines to make it easy to write complex shell scripts that also check
+//config: for legal (and illegal) options. If you want to write horribly
+//config: complex shell scripts, or use some horribly complex shell script
+//config: written by others, this utility may be for you. Most people will
+//config: wisely leave this disabled.
+//config:
+//config:config FEATURE_GETOPT_LONG
+//config: bool "Support -l LONGOPTs"
+//config: default y
+//config: depends on GETOPT && LONG_OPTS
+//config: help
+//config: Enable support for long options (option -l).
+
+//applet:IF_GETOPT(APPLET_NOEXEC(getopt, getopt, BB_DIR_BIN, BB_SUID_DROP, getopt))
+
+//kbuild:lib-$(CONFIG_GETOPT) += getopt.o
+
+//usage:#define getopt_trivial_usage
+//usage: "[OPTIONS] [--] OPTSTRING PARAMS"
+//usage:#define getopt_full_usage "\n\n"
+//usage: IF_FEATURE_GETOPT_LONG(
+//usage: " -a Allow long options starting with single -\n"
+//usage: " -l LOPT[,...] Long options to recognize\n"
+//usage: )
+//usage: " -n PROGNAME The name under which errors are reported"
+//usage: "\n -o OPTSTRING Short options to recognize"
+//usage: "\n -q No error messages on unrecognized options"
+//usage: "\n -Q No normal output"
+//usage: "\n -s SHELL Set shell quoting conventions"
+//usage: "\n -T Version test (exits with 4)"
+//usage: "\n -u Don't quote output"
+//usage: IF_FEATURE_GETOPT_LONG( /* example uses -l, needs FEATURE_GETOPT_LONG */
+//usage: "\n"
+//usage: "\nExample:"
+//usage: "\n"
+//usage: "\nO=`getopt -l bb: -- ab:c:: \"$@\"` || exit 1"
+//usage: "\neval set -- \"$O\""
+//usage: "\nwhile true; do"
+//usage: "\n case \"$1\" in"
+//usage: "\n -a) echo A; shift;;"
+//usage: "\n -b|--bb) echo \"B:'$2'\"; shift 2;;"
+//usage: "\n -c) case \"$2\" in"
+//usage: "\n \"\") echo C; shift 2;;"
+//usage: "\n *) echo \"C:'$2'\"; shift 2;;"
+//usage: "\n esac;;"
+//usage: "\n --) shift; break;;"
+//usage: "\n *) echo Error; exit 1;;"
+//usage: "\n esac"
+//usage: "\ndone"
+//usage: )
+//usage:
+//usage:#define getopt_example_usage
+//usage: "$ cat getopt.test\n"
+//usage: "#!/bin/sh\n"
+//usage: "GETOPT=`getopt -o ab:c:: --long a-long,b-long:,c-long:: \\\n"
+//usage: " -n 'example.busybox' -- \"$@\"`\n"
+//usage: "if [ $? != 0 ]; then exit 1; fi\n"
+//usage: "eval set -- \"$GETOPT\"\n"
+//usage: "while true; do\n"
+//usage: " case $1 in\n"
+//usage: " -a|--a-long) echo \"Option a\"; shift;;\n"
+//usage: " -b|--b-long) echo \"Option b, argument '$2'\"; shift 2;;\n"
+//usage: " -c|--c-long)\n"
+//usage: " case \"$2\" in\n"
+//usage: " \"\") echo \"Option c, no argument\"; shift 2;;\n"
+//usage: " *) echo \"Option c, argument '$2'\"; shift 2;;\n"
+//usage: " esac;;\n"
+//usage: " --) shift; break;;\n"
+//usage: " *) echo \"Internal error!\"; exit 1;;\n"
+//usage: " esac\n"
+//usage: "done\n"
-#include <getopt.h>
+#if ENABLE_FEATURE_GETOPT_LONG
+# include <getopt.h>
+#endif
#include "libbb.h"
/* NON_OPT is the code that is returned when a non-option is found in '+'
static int generate_output(char **argv, int argc, const char *optstr, const struct option *longopts)
{
int exit_code = 0; /* We assume everything will be OK */
- int opt;
-#if ENABLE_FEATURE_GETOPT_LONG
- int longindex;
-#endif
- const char *charptr;
if (quiet_errors) /* No error reporting from getopt(3) */
opterr = 0;
/* We used it already in main() in getopt32(),
* we *must* reset getopt(3): */
-#ifdef __GLIBC__
- optind = 0;
-#else /* BSD style */
- optind = 1;
- /* optreset = 1; */
-#endif
+ GETOPT_RESET();
while (1) {
- opt =
#if ENABLE_FEATURE_GETOPT_LONG
- alternative ?
- getopt_long_only(argc, argv, optstr, longopts, &longindex) :
- getopt_long(argc, argv, optstr, longopts, &longindex);
+ int longindex;
+ int opt = alternative
+ ? getopt_long_only(argc, argv, optstr, longopts, &longindex)
+ : getopt_long(argc, argv, optstr, longopts, &longindex)
+ ;
#else
- getopt(argc, argv, optstr);
+ int opt = getopt(argc, argv, optstr);
#endif
if (opt == -1)
break;
if (opt == NON_OPT)
printf(" %s", normalize(optarg));
else {
+ const char *charptr;
printf(" -%c", opt);
charptr = strchr(optstr, opt);
- if (charptr != NULL && *++charptr == ':')
+ if (charptr && *++charptr == ':')
printf(" %s",
normalize(optarg ? optarg : ""));
}
}
if (!quiet_output) {
+ unsigned idx;
printf(" --");
- while (optind < argc)
- printf(" %s", normalize(argv[optind++]));
+ idx = optind;
+ while (argv[idx])
+ printf(" %s", normalize(argv[idx++]));
bb_putchar('\n');
}
return exit_code;
static void set_shell(const char *new_shell)
{
- if (!strcmp(new_shell, "bash") || !strcmp(new_shell, "sh"))
+ if (strcmp(new_shell, "bash") == 0 || strcmp(new_shell, "sh") == 0)
return;
- if (!strcmp(new_shell, "tcsh") || !strcmp(new_shell, "csh"))
+ if (strcmp(new_shell, "tcsh") == 0 || strcmp(new_shell, "csh") == 0)
option_mask32 |= SHELL_IS_TCSH;
else
bb_error_msg("unknown shell '%s', assuming bash", new_shell);
int getopt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int getopt_main(int argc, char **argv)
{
+ int n;
char *optstr = NULL;
char *name = NULL;
unsigned opt;
compatible = getenv("GETOPT_COMPATIBLE"); /* used as yes/no flag */
- if (argc == 1) {
+ if (!argv[1]) {
if (compatible) {
/* For some reason, the original getopt gave no error
- when there were no arguments. */
- printf(" --\n");
+ * when there were no arguments. */
+ puts(" --");
return 0;
}
bb_error_msg_and_die("missing optstring argument");
}
if (argv[1][0] != '-' || compatible) {
- char *s;
+ char *s = argv[1];
option_mask32 |= OPT_u; /* quoting off */
- s = xstrdup(argv[1] + strspn(argv[1], "-+"));
+ s = xstrdup(s + strspn(s, "-+"));
argv[1] = argv[0];
return generate_output(argv+1, argc-1, s, long_options);
}
#if !ENABLE_FEATURE_GETOPT_LONG
opt = getopt32(argv, "+o:n:qQs:Tu", &optstr, &name, &s_arg);
#else
- applet_long_options = getopt_longopts;
- opt_complementary = "l::";
- opt = getopt32(argv, "+o:n:qQs:Tual:",
+ opt = getopt32long(argv, "+o:n:qQs:Tual:*", getopt_longopts,
&optstr, &name, &s_arg, &l_arg);
/* Effectuate the read options for the applet itself */
while (l_arg) {
}
/* All options controlling the applet have now been parsed */
+ n = optind - 1;
if (!optstr) {
- if (optind >= argc)
+ optstr = argv[++n];
+ if (!optstr)
bb_error_msg_and_die("missing optstring argument");
- optstr = argv[optind++];
}
- argv[optind-1] = name ? name : argv[0];
- return generate_output(argv+optind-1, argc-optind+1, optstr, long_options);
+ argv[n] = name ? name : argv[0];
+ return generate_output(argv + n, argc - n, optstr, long_options);
}
projects / oweals / busybox.git / blobdiff