getopt/trunk/getopt.c

/*
    getopt.c - Enhanced implementation of BSD getopt(1)
    Copyright (c) 1997-2005 Frodo Looijaard <frodo@frodo.looijaard.name>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

/* 
 * Version 1.0-b4: Tue Sep 23 1997. First public release.
 * Version 1.0: Wed Nov 19 1997. 
 *   Bumped up the version number to 1.0
 *   Fixed minor typo (CSH instead of TCSH)
 * Version 1.0.1: Tue Jun 3 1998
 *   Fixed sizeof instead of strlen bug
 *   Bumped up the version number to 1.0.1
 * Version 1.0.2: Thu Jun 11 1998 (not present)
 *   Fixed gcc-2.8.1 warnings
 *   Fixed --version/-V option (not present)
 * Version 1.0.5: Tue Jun 22 1999
 *   Make -u option work (not present)
 * Version 1.0.6: Tue Jun 27 2000
 *   No important changes
 * Version 1.1.0: Tue Jun 30 2000
 *   Added NLS support (partly written by Arkadiusz Mi<B6>kiewicz 
 *     <misiek@pld.org.pl>)
 * Version 1.1.4: Mon Nov 7 2005
 *   Fixed a few type's in the manpage
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <ctype.h>

#if LIBCGETOPT
#include <getopt.h>
#else
#include "getopt.h"
#endif

#include "nls.h"

/* NON_OPT is the code that is returned when a non-option is found in '+' 
   mode */
#define NON_OPT 1
/* LONG_OPT is the code that is returned when a long option is found. */
#define LONG_OPT 2

/* The shells recognized. */
typedef enum {BASH,TCSH} shell_t;


/* Some global variables that tells us how to parse. */
shell_t shell=BASH; /* The shell we generate output for. */
int quiet_errors=0; /* 0 is not quiet. */
int quiet_output=0; /* 0 is not quiet. */
int quote=1; /* 1 is do quote. */
int alternative=0; /* 0 is getopt_long, 1 is getopt_long_only */

/* Function prototypes */
void *our_malloc(size_t size);
void *our_realloc(void *ptr, size_t size);
const char *normalize(const char *arg);
int generate_output(char * argv[],int argc,const char *optstr,
                    const struct option *longopts);
int main(int argc, char *argv[]);
void parse_error(const char *message);
void add_long_options(char *options);
void add_longopt(const char *name,int has_arg);
void print_help(void);
void set_shell(const char *new_shell);
void set_initial_shell(void);

void *our_malloc(size_t size)
{
        void *ret=malloc(size);
        if (! ret) {
                fprintf(stderr,_("%s: Out of memory!\n"),"getopt");
                exit(3);
        }
        return(ret);
}

void *our_realloc(void *ptr, size_t size)
{
        void *ret=realloc(ptr,size);
        if (! ret && size) {
                fprintf(stderr,_("%s: Out of memory!\n"),"getopt");
                exit(3);
        }
        return(ret);
}

/*
 * This function 'normalizes' a single argument: it puts single quotes around
 * it and escapes other special characters. If quote is false, it just
 * returns its argument.
 * Bash only needs special treatment for single quotes; tcsh also recognizes
 * exclamation marks within single quotes, and nukes whitespace.
 * This function returns a pointer to a buffer that is overwritten by 
 * each call.
 */
const char *normalize(const char *arg)
{
        static char *BUFFER=NULL;
        const char *argptr=arg;
        char *bufptr;

        if (BUFFER != NULL)
                free(BUFFER);

        if (!quote) { /* Just copy arg */
                BUFFER=our_malloc(strlen(arg)+1);
                        
                strcpy(BUFFER,arg);
                return BUFFER;
        }

        /* Each character in arg may take upto four characters in the result:
           For a quote we need a closing quote, a backslash, a quote and an
           opening quote! We need also the global opening and closing quote,
           and one extra character for '\0'. */
        BUFFER=our_malloc(strlen(arg)*4+3);

        bufptr=BUFFER;
        *bufptr++='\'';

        while (*argptr) {
                if (*argptr == '\'') {
                        /* Quote: replace it with: '\'' */
                        *bufptr++='\'';
                        *bufptr++='\\';
                        *bufptr++='\'';
                        *bufptr++='\'';
                } else if (shell==TCSH && *argptr=='!') {
                        /* Exclamation mark: replace it with: \! */
                        *bufptr++='\'';
                        *bufptr++='\\';
                        *bufptr++='!';
                        *bufptr++='\'';
                } else if (shell==TCSH && *argptr=='\n') {
                        /* Newline: replace it with: \n */
                        *bufptr++='\\';
                        *bufptr++='n';
                } else if (shell==TCSH && isspace(*argptr)) {
                        /* Non-newline whitespace: replace it with \<ws> */
                        *bufptr++='\'';
                        *bufptr++='\\';
                        *bufptr++=*argptr;
                        *bufptr++='\'';
                } else
                        /* Just copy */
                        *bufptr++=*argptr;
                argptr++;
        }
        *bufptr++='\'';
        *bufptr++='\0';
        return BUFFER;
}

/* 
 * Generate the output. argv[0] is the program name (used for reporting errors).
 * argv[1..] contains the options to be parsed. argc must be the number of
 * elements in argv (ie. 1 if there are no options, only the program name),
 * optstr must contain the short options, and longopts the long options.
 * Other settings are found in global variables.
 */
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;
        int longindex;
        const char *charptr;

        if (quiet_errors) /* No error reporting from getopt(3) */
                opterr=0;
        optind=0; /* Reset getopt(3) */

        while ((opt = (alternative?
                      getopt_long_only(argc,argv,optstr,longopts,&longindex):
                      getopt_long(argc,argv,optstr,longopts,&longindex))) 
               != EOF) 
                if (opt == '?' || opt == ':' )
                        exit_code = 1;
                else if (!quiet_output) 
                {
                        if (opt == LONG_OPT) {
                                printf(" --%s",longopts[longindex].name);
                                if (longopts[longindex].has_arg) 
                                        printf(" %s",
                                               normalize(optarg?optarg:""));
                        } else if (opt == NON_OPT) 
                                printf(" %s",normalize(optarg)); 
                        else {
                                printf(" -%c",opt);
                                charptr = strchr(optstr,opt);
                                if (charptr != NULL && *++charptr == ':')
                                        printf(" %s",
                                               normalize(optarg?optarg:""));
                        }
                }
        
        if (! quiet_output) {
                printf(" --");
                while (optind < argc) 
                        printf(" %s",normalize(argv[optind++]));
                printf("\n");
        }
        return exit_code;
}

/*
 * Report an error when parsing getopt's own arguments.
 * If message is NULL, we already sent a message, we just exit with a helpful
 * hint.
 */
void parse_error(const char *message)
{
        if (message)
                fprintf(stderr,"getopt: %s\n",message);
        fputs(_("Try `getopt --help' for more information.\n"),stderr);
        exit(2);
}

static struct option *long_options=NULL;
static int long_options_length=0; /* Length of array */
static int long_options_nr=0; /* Nr of used elements in array */
#define LONG_OPTIONS_INCR 10
#define init_longopt() add_longopt(NULL,0)

/* Register a long option. The contents of name is copied. */
void add_longopt(const char *name,int has_arg)
{
        char *tmp;
        if (!name) { /* init */
                free(long_options);
                long_options=NULL;
                long_options_length=0;
                long_options_nr=0;
        }

        if (long_options_nr == long_options_length) {
                long_options_length += LONG_OPTIONS_INCR;
                long_options=our_realloc(long_options,
                                         sizeof(struct option) * 
                                           long_options_length);
        }

        long_options[long_options_nr].name=NULL;
        long_options[long_options_nr].has_arg=0;
        long_options[long_options_nr].flag=NULL;
        long_options[long_options_nr].val=0;

        if (long_options_nr) { /* Not for init! */
                long_options[long_options_nr-1].has_arg=has_arg;
                long_options[long_options_nr-1].flag=NULL;
                long_options[long_options_nr-1].val=LONG_OPT;
                tmp = our_malloc(strlen(name)+1);
                strcpy(tmp,name);
                long_options[long_options_nr-1].name=tmp;
        }
        long_options_nr++;
}
        

/* 
 * Register several long options. options is a string of long options, 
 * separated by commas or whitespace. 
 * This nukes options! 
 */
void add_long_options(char *options)
{
        int arg_opt;
        char *tokptr=strtok(options,", \t\n");
        while (tokptr) {
                arg_opt=no_argument;
                if (strlen(tokptr) > 0) {
                        if (tokptr[strlen(tokptr)-1] == ':') {
                                if (tokptr[strlen(tokptr)-2] == ':') {
                                        tokptr[strlen(tokptr)-2]='\0';
                                        arg_opt=optional_argument;
                                } else {
                                        tokptr[strlen(tokptr)-1]='\0';
                                        arg_opt=required_argument;
                                }
                                if (strlen(tokptr) == 0)
                                        parse_error(_("empty long option after "
                                                      "-l or --long argument"));
                        }
                        add_longopt(tokptr,arg_opt);
                }
                tokptr=strtok(NULL,", \t\n");
        }
}

void set_shell(const char *new_shell)
{
        if (!strcmp(new_shell,"bash"))
                shell=BASH;
        else if (!strcmp(new_shell,"tcsh"))
                shell=TCSH;
        else if (!strcmp(new_shell,"sh"))
                shell=BASH;
        else if (!strcmp(new_shell,"csh"))
                shell=TCSH;
        else
                parse_error(_("unknown shell after -s or --shell argument"));
}

void print_help(void)
{
        fputs(_("Usage: getopt optstring parameters\n"),stderr);
        fputs(_("       getopt [options] [--] optstring parameters\n"),stderr);
        fputs(_("       getopt [options] -o|--options optstring [options] [--]\n"),stderr);
        fputs(_("              parameters\n"),stderr);
        fputs(_("  -a, --alternative            Allow long options starting with single -\n"),stderr);
        fputs(_("  -h, --help                   This small usage guide\n"),stderr);
        fputs(_("  -l, --longoptions=longopts   Long options to be recognized\n"),stderr);
        fputs(_("  -n, --name=progname          The name under which errors are reported\n"),stderr);
        fputs(_("  -o, --options=optstring      Short options to be recognized\n"),stderr);
        fputs(_("  -q, --quiet                  Disable error reporting by getopt(3)\n"),stderr);
        fputs(_("  -Q, --quiet-output           No normal output\n"),stderr);
        fputs(_("  -s, --shell=shell            Set shell quoting conventions\n"),stderr);      
        fputs(_("  -T, --test                   Test for getopt(1) version\n"),stderr);
        fputs(_("  -u, --unqote                 Do not quote the output\n"),stderr);
        fputs(_("  -V, --version                Output version information\n"),stderr);
        exit(2);
}
        
/* Exit codes:
 *   0) No errors, succesful operation.
 *   1) getopt(3) returned an error.
 *   2) A problem with parameter parsing for getopt(1).
 *   3) Internal error, out of memory
 *   4) Returned for -T
 */

static struct option longopts[]={ {"options",required_argument,NULL,'o'},
                                  {"longoptions",required_argument,NULL,'l'},
                                  {"quiet",no_argument,NULL,'q'},
                                  {"quiet-output",no_argument,NULL,'Q'},
                                  {"shell",required_argument,NULL,'s'},
                                  {"test",no_argument,NULL,'T'},
                                  {"unquoted",no_argument,NULL,'u'},
                                  {"help",no_argument,NULL,'h'},
                                  {"alternative",no_argument,NULL,'a'},
                                  {"name",required_argument,NULL,'n'},
                                  {"version",no_argument,NULL,'V'},
                                  {NULL,0,NULL,0}
                                };

/* Stop scanning as soon as a non-option argument is found! */
static const char *shortopts="+ao:l:n:qQs:TuhV";

int main(int argc, char *argv[])
{
        char *optstr=NULL;
        char *name=NULL;
        int opt;
        int compatible=0;

#if WITHOUT_GETTEXT
#else
        setlocale(LC_ALL,"");
        bindtextdomain(PACKAGE, LOCALEDIR);
        textdomain(PACKAGE);
#endif

        init_longopt();

        if (getenv("GETOPT_COMPATIBLE")) 
                compatible=1;

        if (argc == 1) 
        {
                if (compatible) {
                        /* For some reason, the original getopt gave no error
                           when there were no arguments. */
                        printf(" --\n");
                        exit(0);
                }
                else
                        parse_error(_("missing optstring argument"));
        }
        
        if (argv[1][0] != '-' || compatible) {
                quote=0;
                optstr=our_malloc(strlen(argv[1])+1);
                strcpy(optstr,argv[1]+strspn(argv[1],"-+"));
                argv[1]=argv[0];
                exit(generate_output(argv+1,argc-1,optstr,long_options));
        }
        
        while ((opt=getopt_long(argc,argv,shortopts,longopts,NULL)) != EOF) 
                switch (opt) {
                case 'a':
                        alternative=1;
                        break;
                case 'h':
                        print_help();
                        exit(0);
                case 'o':
                        if (optstr)
                                free(optstr);
                        optstr=our_malloc(strlen(optarg)+1);
                        strcpy(optstr,optarg);
                        break;
                case 'l':
                        add_long_options(optarg);
                        break;
                case 'n':
                        if (name)
                                free(name);
                        name=our_malloc(strlen(optarg)+1);
                        strcpy(name,optarg);
                        break;
                case 'q':
                        quiet_errors=1;
                        break;
                case 'Q':
                        quiet_output=1;
                        break;
                case 's':
                        set_shell(optarg);
                        break;
                case 'T':
                        exit(4);
                case 'u':
                        quote=0;
                        break;
                case 'V':
                        printf(_("getopt (enhanced) 1.1.4\n"));
                        exit(0);
                case '?':
                case ':':
                        parse_error(NULL);
                default:
                        parse_error(_("internal error, contact the author."));
                }
        
        if (!optstr) 
        {
                if (optind >= argc)
                        parse_error(_("missing optstring argument"));
                else {
                        optstr=our_malloc(strlen(argv[optind])+1);
                        strcpy(optstr,argv[optind]);
                        optind++;
                }
        }
        if (name)
                argv[optind-1]=name;
        else
                argv[optind-1]=argv[0];
        exit(generate_output(argv+optind-1,argc-optind+1,optstr,long_options));
}
1	frodo	259	/*
2			getopt.c - Enhanced implementation of BSD getopt(1)
3	frodo	263	Copyright (c) 1997-2005 Frodo Looijaard <frodo@frodo.looijaard.name>
4	frodo	259
5			This program is free software; you can redistribute it and/or modify
6			it under the terms of the GNU General Public License as published by
7			the Free Software Foundation; either version 2 of the License, or
8			(at your option) any later version.
9
10			This program is distributed in the hope that it will be useful,
11			but WITHOUT ANY WARRANTY; without even the implied warranty of
12			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13			GNU General Public License for more details.
14
15			You should have received a copy of the GNU General Public License
16			along with this program; if not, write to the Free Software
17			Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18			*/
19
20			/*
21			* Version 1.0-b4: Tue Sep 23 1997. First public release.
22			* Version 1.0: Wed Nov 19 1997.
23			* Bumped up the version number to 1.0
24			* Fixed minor typo (CSH instead of TCSH)
25			* Version 1.0.1: Tue Jun 3 1998
26			* Fixed sizeof instead of strlen bug
27			* Bumped up the version number to 1.0.1
28			* Version 1.0.2: Thu Jun 11 1998 (not present)
29			* Fixed gcc-2.8.1 warnings
30			* Fixed --version/-V option (not present)
31			* Version 1.0.5: Tue Jun 22 1999
32			* Make -u option work (not present)
33			* Version 1.0.6: Tue Jun 27 2000
34			* No important changes
35			* Version 1.1.0: Tue Jun 30 2000
36			* Added NLS support (partly written by Arkadiusz Mi<B6>kiewicz
37			* <misiek@pld.org.pl>)
38	frodo	263	* Version 1.1.4: Mon Nov 7 2005
39			* Fixed a few type's in the manpage
40	frodo	259	*/
41
42			#include <stdio.h>
43			#include <stdlib.h>
44			#include <string.h>
45			#include <unistd.h>
46			#include <ctype.h>
47
48			#if LIBCGETOPT
49			#include <getopt.h>
50			#else
51			#include "getopt.h"
52			#endif
53
54			#include "nls.h"
55
56			/* NON_OPT is the code that is returned when a non-option is found in '+'
57			mode */
58			#define NON_OPT 1
59			/* LONG_OPT is the code that is returned when a long option is found. */
60			#define LONG_OPT 2
61
62			/* The shells recognized. */
63			typedef enum {BASH,TCSH} shell_t;
64
65
66			/* Some global variables that tells us how to parse. */
67			shell_t shell=BASH; /* The shell we generate output for. */
68			int quiet_errors=0; /* 0 is not quiet. */
69			int quiet_output=0; /* 0 is not quiet. */
70			int quote=1; /* 1 is do quote. */
71			int alternative=0; /* 0 is getopt_long, 1 is getopt_long_only */
72
73			/* Function prototypes */
74			void *our_malloc(size_t size);
75			void our_realloc(void ptr, size_t size);
76			const char normalize(const char arg);
77			int generate_output(char * argv[],int argc,const char *optstr,
78			const struct option *longopts);
79			int main(int argc, char *argv[]);
80			void parse_error(const char *message);
81			void add_long_options(char *options);
82			void add_longopt(const char *name,int has_arg);
83			void print_help(void);
84			void set_shell(const char *new_shell);
85			void set_initial_shell(void);
86
87			void *our_malloc(size_t size)
88			{
89			void *ret=malloc(size);
90			if (! ret) {
91			fprintf(stderr,_("%s: Out of memory!\n"),"getopt");
92			exit(3);
93			}
94			return(ret);
95			}
96
97			void our_realloc(void ptr, size_t size)
98			{
99			void *ret=realloc(ptr,size);
100			if (! ret && size) {
101			fprintf(stderr,_("%s: Out of memory!\n"),"getopt");
102			exit(3);
103			}
104			return(ret);
105			}
106
107			/*
108			* This function 'normalizes' a single argument: it puts single quotes around
109			* it and escapes other special characters. If quote is false, it just
110			* returns its argument.
111			* Bash only needs special treatment for single quotes; tcsh also recognizes
112			* exclamation marks within single quotes, and nukes whitespace.
113			* This function returns a pointer to a buffer that is overwritten by
114			* each call.
115			*/
116			const char normalize(const char arg)
117			{
118			static char *BUFFER=NULL;
119			const char *argptr=arg;
120			char *bufptr;
121
122			if (BUFFER != NULL)
123			free(BUFFER);
124
125			if (!quote) { /* Just copy arg */
126			BUFFER=our_malloc(strlen(arg)+1);
127
128			strcpy(BUFFER,arg);
129			return BUFFER;
130			}
131
132			/* Each character in arg may take upto four characters in the result:
133			For a quote we need a closing quote, a backslash, a quote and an
134			opening quote! We need also the global opening and closing quote,
135			and one extra character for '\0'. */
136			BUFFER=our_malloc(strlen(arg)*4+3);
137
138			bufptr=BUFFER;
139			*bufptr++='\'';
140
141			while (*argptr) {
142			if (*argptr == '\'') {
143			/* Quote: replace it with: '\'' */
144			*bufptr++='\'';
145			*bufptr++='\\';
146			*bufptr++='\'';
147			*bufptr++='\'';
148			} else if (shell==TCSH && *argptr=='!') {
149			/* Exclamation mark: replace it with: \! */
150			*bufptr++='\'';
151			*bufptr++='\\';
152			*bufptr++='!';
153			*bufptr++='\'';
154			} else if (shell==TCSH && *argptr=='\n') {
155			/* Newline: replace it with: \n */
156			*bufptr++='\\';
157			*bufptr++='n';
158			} else if (shell==TCSH && isspace(*argptr)) {
159			/* Non-newline whitespace: replace it with \<ws> */
160			*bufptr++='\'';
161			*bufptr++='\\';
162			bufptr++=argptr;
163			*bufptr++='\'';
164			} else
165			/* Just copy */
166			bufptr++=argptr;
167			argptr++;
168			}
169			*bufptr++='\'';
170			*bufptr++='\0';
171			return BUFFER;
172			}
173
174			/*
175			* Generate the output. argv[0] is the program name (used for reporting errors).
176			* argv[1..] contains the options to be parsed. argc must be the number of
177			* elements in argv (ie. 1 if there are no options, only the program name),
178			* optstr must contain the short options, and longopts the long options.
179			* Other settings are found in global variables.
180			*/
181			int generate_output(char * argv[],int argc,const char *optstr,
182			const struct option *longopts)
183			{
184			int exit_code = 0; /* We assume everything will be OK */
185			int opt;
186			int longindex;
187			const char *charptr;
188
189			if (quiet_errors) /* No error reporting from getopt(3) */
190			opterr=0;
191			optind=0; /* Reset getopt(3) */
192
193			while ((opt = (alternative?
194			getopt_long_only(argc,argv,optstr,longopts,&longindex):
195			getopt_long(argc,argv,optstr,longopts,&longindex)))
196			!= EOF)
197			if (opt == '?' \|\| opt == ':' )
198			exit_code = 1;
199			else if (!quiet_output)
200			{
201			if (opt == LONG_OPT) {
202			printf(" --%s",longopts[longindex].name);
203			if (longopts[longindex].has_arg)
204			printf(" %s",
205			normalize(optarg?optarg:""));
206			} else if (opt == NON_OPT)
207			printf(" %s",normalize(optarg));
208			else {
209			printf(" -%c",opt);
210			charptr = strchr(optstr,opt);
211			if (charptr != NULL && *++charptr == ':')
212			printf(" %s",
213			normalize(optarg?optarg:""));
214			}
215			}
216
217			if (! quiet_output) {
218			printf(" --");
219			while (optind < argc)
220			printf(" %s",normalize(argv[optind++]));
221			printf("\n");
222			}
223			return exit_code;
224			}
225
226			/*
227			* Report an error when parsing getopt's own arguments.
228			* If message is NULL, we already sent a message, we just exit with a helpful
229			* hint.
230			*/
231			void parse_error(const char *message)
232			{
233			if (message)
234			fprintf(stderr,"getopt: %s\n",message);
235			fputs(_("Try `getopt --help' for more information.\n"),stderr);
236			exit(2);
237			}
238
239			static struct option *long_options=NULL;
240			static int long_options_length=0; /* Length of array */
241			static int long_options_nr=0; /* Nr of used elements in array */
242			#define LONG_OPTIONS_INCR 10
243			#define init_longopt() add_longopt(NULL,0)
244
245			/* Register a long option. The contents of name is copied. */
246			void add_longopt(const char *name,int has_arg)
247			{
248			char *tmp;
249			if (!name) { /* init */
250			free(long_options);
251			long_options=NULL;
252			long_options_length=0;
253			long_options_nr=0;
254			}
255
256			if (long_options_nr == long_options_length) {
257			long_options_length += LONG_OPTIONS_INCR;
258			long_options=our_realloc(long_options,
259			sizeof(struct option) *
260			long_options_length);
261			}
262
263			long_options[long_options_nr].name=NULL;
264			long_options[long_options_nr].has_arg=0;
265			long_options[long_options_nr].flag=NULL;
266			long_options[long_options_nr].val=0;
267
268			if (long_options_nr) { /* Not for init! */
269			long_options[long_options_nr-1].has_arg=has_arg;
270			long_options[long_options_nr-1].flag=NULL;
271			long_options[long_options_nr-1].val=LONG_OPT;
272			tmp = our_malloc(strlen(name)+1);
273			strcpy(tmp,name);
274			long_options[long_options_nr-1].name=tmp;
275			}
276			long_options_nr++;
277			}
278
279
280			/*
281			* Register several long options. options is a string of long options,
282			* separated by commas or whitespace.
283			* This nukes options!
284			*/
285			void add_long_options(char *options)
286			{
287			int arg_opt;
288			char *tokptr=strtok(options,", \t\n");
289			while (tokptr) {
290			arg_opt=no_argument;
291			if (strlen(tokptr) > 0) {
292			if (tokptr[strlen(tokptr)-1] == ':') {
293			if (tokptr[strlen(tokptr)-2] == ':') {
294			tokptr[strlen(tokptr)-2]='\0';
295			arg_opt=optional_argument;
296			} else {
297			tokptr[strlen(tokptr)-1]='\0';
298			arg_opt=required_argument;
299			}
300			if (strlen(tokptr) == 0)
301			parse_error(_("empty long option after "
302			"-l or --long argument"));
303			}
304			add_longopt(tokptr,arg_opt);
305			}
306			tokptr=strtok(NULL,", \t\n");
307			}
308			}
309
310			void set_shell(const char *new_shell)
311			{
312			if (!strcmp(new_shell,"bash"))
313			shell=BASH;
314			else if (!strcmp(new_shell,"tcsh"))
315			shell=TCSH;
316			else if (!strcmp(new_shell,"sh"))
317			shell=BASH;
318			else if (!strcmp(new_shell,"csh"))
319			shell=TCSH;
320			else
321			parse_error(_("unknown shell after -s or --shell argument"));
322			}
323
324			void print_help(void)
325			{
326			fputs(_("Usage: getopt optstring parameters\n"),stderr);
327			fputs(_(" getopt [options] [--] optstring parameters\n"),stderr);
328			fputs(_(" getopt [options] -o\|--options optstring [options] [--]\n"),stderr);
329			fputs(_(" parameters\n"),stderr);
330			fputs(_(" -a, --alternative Allow long options starting with single -\n"),stderr);
331			fputs(_(" -h, --help This small usage guide\n"),stderr);
332			fputs(_(" -l, --longoptions=longopts Long options to be recognized\n"),stderr);
333			fputs(_(" -n, --name=progname The name under which errors are reported\n"),stderr);
334			fputs(_(" -o, --options=optstring Short options to be recognized\n"),stderr);
335			fputs(_(" -q, --quiet Disable error reporting by getopt(3)\n"),stderr);
336			fputs(_(" -Q, --quiet-output No normal output\n"),stderr);
337			fputs(_(" -s, --shell=shell Set shell quoting conventions\n"),stderr);
338			fputs(_(" -T, --test Test for getopt(1) version\n"),stderr);
339			fputs(_(" -u, --unqote Do not quote the output\n"),stderr);
340			fputs(_(" -V, --version Output version information\n"),stderr);
341			exit(2);
342			}
343
344			/* Exit codes:
345			* 0) No errors, succesful operation.
346			* 1) getopt(3) returned an error.
347			* 2) A problem with parameter parsing for getopt(1).
348			* 3) Internal error, out of memory
349			* 4) Returned for -T
350			*/
351
352			static struct option longopts[]={ {"options",required_argument,NULL,'o'},
353			{"longoptions",required_argument,NULL,'l'},
354			{"quiet",no_argument,NULL,'q'},
355			{"quiet-output",no_argument,NULL,'Q'},
356			{"shell",required_argument,NULL,'s'},
357			{"test",no_argument,NULL,'T'},
358			{"unquoted",no_argument,NULL,'u'},
359			{"help",no_argument,NULL,'h'},
360			{"alternative",no_argument,NULL,'a'},
361			{"name",required_argument,NULL,'n'},
362			{"version",no_argument,NULL,'V'},
363			{NULL,0,NULL,0}
364			};
365
366			/* Stop scanning as soon as a non-option argument is found! */
367			static const char *shortopts="+ao:l:n:qQs:TuhV";
368
369			int main(int argc, char *argv[])
370			{
371			char *optstr=NULL;
372			char *name=NULL;
373			int opt;
374			int compatible=0;
375
376			#if WITHOUT_GETTEXT
377			#else
378			setlocale(LC_ALL,"");
379			bindtextdomain(PACKAGE, LOCALEDIR);
380			textdomain(PACKAGE);
381			#endif
382
383			init_longopt();
384
385			if (getenv("GETOPT_COMPATIBLE"))
386			compatible=1;
387
388			if (argc == 1)
389			{
390			if (compatible) {
391			/* For some reason, the original getopt gave no error
392			when there were no arguments. */
393			printf(" --\n");
394			exit(0);
395			}
396			else
397			parse_error(_("missing optstring argument"));
398			}
399
400			if (argv[1][0] != '-' \|\| compatible) {
401			quote=0;
402			optstr=our_malloc(strlen(argv[1])+1);
403			strcpy(optstr,argv[1]+strspn(argv[1],"-+"));
404			argv[1]=argv[0];
405			exit(generate_output(argv+1,argc-1,optstr,long_options));
406			}
407
408			while ((opt=getopt_long(argc,argv,shortopts,longopts,NULL)) != EOF)
409			switch (opt) {
410			case 'a':
411			alternative=1;
412			break;
413			case 'h':
414			print_help();
415			exit(0);
416			case 'o':
417			if (optstr)
418			free(optstr);
419			optstr=our_malloc(strlen(optarg)+1);
420			strcpy(optstr,optarg);
421			break;
422			case 'l':
423			add_long_options(optarg);
424			break;
425			case 'n':
426			if (name)
427			free(name);
428			name=our_malloc(strlen(optarg)+1);
429			strcpy(name,optarg);
430			break;
431			case 'q':
432			quiet_errors=1;
433			break;
434			case 'Q':
435			quiet_output=1;
436			break;
437			case 's':
438			set_shell(optarg);
439			break;
440			case 'T':
441			exit(4);
442			case 'u':
443			quote=0;
444			break;
445			case 'V':
446	frodo	263	printf(_("getopt (enhanced) 1.1.4\n"));
447	frodo	259	exit(0);
448			case '?':
449			case ':':
450			parse_error(NULL);
451			default:
452			parse_error(_("internal error, contact the author."));
453			}
454
455			if (!optstr)
456			{
457			if (optind >= argc)
458			parse_error(_("missing optstring argument"));
459			else {
460			optstr=our_malloc(strlen(argv[optind])+1);
461			strcpy(optstr,argv[optind]);
462			optind++;
463			}
464			}
465			if (name)
466			argv[optind-1]=name;
467			else
468			argv[optind-1]=argv[0];
469			exit(generate_output(argv+optind-1,argc-optind+1,optstr,long_options));
470			}
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