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; /* Assume everything will be OK */
        int opt;
        int longindex;
        const char *charptr;

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

        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	frodo	317	* getopt.c - Enhanced implementation of BSD getopt(1)
3			* Copyright (c) 1997-2005 Frodo Looijaard <frodo@frodo.looijaard.name>
4			*
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	frodo	259
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	frodo	317	* mode */
58	frodo	259	#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	frodo	317	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	frodo	259
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	frodo	317	* This function 'normalizes' a single argument: it puts single quotes
109			* around it and escapes other special characters. If quote is false, it
110			* just returns its argument.
111			*
112	frodo	259	* Bash only needs special treatment for single quotes; tcsh also recognizes
113	frodo	317	* exclamation marks within single quotes, and nukes whitespace. This
114			* function returns a pointer to a buffer that is overwritten by each call.
115	frodo	259	*/
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	frodo	317	if (!quote) {
126			/* Just copy arg */
127	frodo	259	BUFFER=our_malloc(strlen(arg)+1);
128
129			strcpy(BUFFER,arg);
130			return BUFFER;
131			}
132
133	frodo	317	/*
134			* Each character in arg may take upto four characters in the
135			* result: For a quote we need a closing quote, a backslash, a quote
136			* and an opening quote! We need also the global opening and closing
137			* quote, and one extra character for '\0'.
138			*/
139	frodo	259	BUFFER=our_malloc(strlen(arg)*4+3);
140
141			bufptr=BUFFER;
142			*bufptr++='\'';
143
144			while (*argptr) {
145			if (*argptr == '\'') {
146			/* Quote: replace it with: '\'' */
147			*bufptr++='\'';
148			*bufptr++='\\';
149			*bufptr++='\'';
150			*bufptr++='\'';
151			} else if (shell==TCSH && *argptr=='!') {
152			/* Exclamation mark: replace it with: \! */
153			*bufptr++='\'';
154			*bufptr++='\\';
155			*bufptr++='!';
156			*bufptr++='\'';
157			} else if (shell==TCSH && *argptr=='\n') {
158			/* Newline: replace it with: \n */
159			*bufptr++='\\';
160			*bufptr++='n';
161			} else if (shell==TCSH && isspace(*argptr)) {
162			/* Non-newline whitespace: replace it with \<ws> */
163			*bufptr++='\'';
164			*bufptr++='\\';
165			bufptr++=argptr;
166			*bufptr++='\'';
167			} else
168			/* Just copy */
169			bufptr++=argptr;
170			argptr++;
171			}
172			*bufptr++='\'';
173			*bufptr++='\0';
174			return BUFFER;
175			}
176
177			/*
178			* Generate the output. argv[0] is the program name (used for reporting errors).
179			* argv[1..] contains the options to be parsed. argc must be the number of
180			* elements in argv (ie. 1 if there are no options, only the program name),
181			* optstr must contain the short options, and longopts the long options.
182			* Other settings are found in global variables.
183			*/
184			int generate_output(char * argv[],int argc,const char *optstr,
185			const struct option *longopts)
186			{
187	frodo	317	int exit_code = 0; /* Assume everything will be OK */
188	frodo	259	int opt;
189			int longindex;
190			const char *charptr;
191
192	frodo	317	if (quiet_errors)
193			/* No error reporting from getopt(3) */
194	frodo	259	opterr=0;
195	frodo	317	/* Reset getopt(3) */
196			optind=0;
197	frodo	259
198			while ((opt = (alternative?
199			getopt_long_only(argc,argv,optstr,longopts,&longindex):
200			getopt_long(argc,argv,optstr,longopts,&longindex)))
201			!= EOF)
202			if (opt == '?' \|\| opt == ':' )
203			exit_code = 1;
204			else if (!quiet_output)
205			{
206			if (opt == LONG_OPT) {
207			printf(" --%s",longopts[longindex].name);
208			if (longopts[longindex].has_arg)
209			printf(" %s",
210			normalize(optarg?optarg:""));
211			} else if (opt == NON_OPT)
212			printf(" %s",normalize(optarg));
213			else {
214			printf(" -%c",opt);
215			charptr = strchr(optstr,opt);
216			if (charptr != NULL && *++charptr == ':')
217			printf(" %s",
218			normalize(optarg?optarg:""));
219			}
220			}
221
222			if (! quiet_output) {
223			printf(" --");
224			while (optind < argc)
225			printf(" %s",normalize(argv[optind++]));
226			printf("\n");
227			}
228			return exit_code;
229			}
230
231			/*
232	frodo	317	* Report an error when parsing getopt's own arguments. If message is NULL,
233			* we already sent a message, we just exit with a helpful hint.
234	frodo	259	*/
235			void parse_error(const char *message)
236			{
237			if (message)
238			fprintf(stderr,"getopt: %s\n",message);
239			fputs(_("Try `getopt --help' for more information.\n"),stderr);
240			exit(2);
241			}
242
243			static struct option *long_options=NULL;
244			static int long_options_length=0; /* Length of array */
245			static int long_options_nr=0; /* Nr of used elements in array */
246			#define LONG_OPTIONS_INCR 10
247			#define init_longopt() add_longopt(NULL,0)
248
249			/* Register a long option. The contents of name is copied. */
250			void add_longopt(const char *name,int has_arg)
251			{
252			char *tmp;
253	frodo	317	if (!name) {
254			/* init */
255	frodo	259	free(long_options);
256			long_options=NULL;
257			long_options_length=0;
258			long_options_nr=0;
259			}
260
261			if (long_options_nr == long_options_length) {
262			long_options_length += LONG_OPTIONS_INCR;
263			long_options=our_realloc(long_options,
264			sizeof(struct option) *
265			long_options_length);
266			}
267
268			long_options[long_options_nr].name=NULL;
269			long_options[long_options_nr].has_arg=0;
270			long_options[long_options_nr].flag=NULL;
271			long_options[long_options_nr].val=0;
272
273	frodo	317	if (long_options_nr) {
274			/* Not for init! */
275	frodo	259	long_options[long_options_nr-1].has_arg=has_arg;
276			long_options[long_options_nr-1].flag=NULL;
277			long_options[long_options_nr-1].val=LONG_OPT;
278			tmp = our_malloc(strlen(name)+1);
279			strcpy(tmp,name);
280			long_options[long_options_nr-1].name=tmp;
281			}
282			long_options_nr++;
283			}
284
285
286			/*
287	frodo	317	* Register several long options. options is a string of long options,
288			* separated by commas or whitespace. This nukes options!
289	frodo	259	*/
290			void add_long_options(char *options)
291			{
292			int arg_opt;
293			char *tokptr=strtok(options,", \t\n");
294			while (tokptr) {
295			arg_opt=no_argument;
296			if (strlen(tokptr) > 0) {
297			if (tokptr[strlen(tokptr)-1] == ':') {
298			if (tokptr[strlen(tokptr)-2] == ':') {
299			tokptr[strlen(tokptr)-2]='\0';
300			arg_opt=optional_argument;
301			} else {
302			tokptr[strlen(tokptr)-1]='\0';
303			arg_opt=required_argument;
304			}
305			if (strlen(tokptr) == 0)
306			parse_error(_("empty long option after "
307			"-l or --long argument"));
308			}
309			add_longopt(tokptr,arg_opt);
310			}
311			tokptr=strtok(NULL,", \t\n");
312			}
313			}
314
315			void set_shell(const char *new_shell)
316			{
317			if (!strcmp(new_shell,"bash"))
318			shell=BASH;
319			else if (!strcmp(new_shell,"tcsh"))
320			shell=TCSH;
321			else if (!strcmp(new_shell,"sh"))
322			shell=BASH;
323			else if (!strcmp(new_shell,"csh"))
324			shell=TCSH;
325			else
326			parse_error(_("unknown shell after -s or --shell argument"));
327			}
328
329			void print_help(void)
330			{
331			fputs(_("Usage: getopt optstring parameters\n"),stderr);
332			fputs(_(" getopt [options] [--] optstring parameters\n"),stderr);
333			fputs(_(" getopt [options] -o\|--options optstring [options] [--]\n"),stderr);
334			fputs(_(" parameters\n"),stderr);
335			fputs(_(" -a, --alternative Allow long options starting with single -\n"),stderr);
336			fputs(_(" -h, --help This small usage guide\n"),stderr);
337			fputs(_(" -l, --longoptions=longopts Long options to be recognized\n"),stderr);
338			fputs(_(" -n, --name=progname The name under which errors are reported\n"),stderr);
339			fputs(_(" -o, --options=optstring Short options to be recognized\n"),stderr);
340			fputs(_(" -q, --quiet Disable error reporting by getopt(3)\n"),stderr);
341			fputs(_(" -Q, --quiet-output No normal output\n"),stderr);
342			fputs(_(" -s, --shell=shell Set shell quoting conventions\n"),stderr);
343			fputs(_(" -T, --test Test for getopt(1) version\n"),stderr);
344			fputs(_(" -u, --unqote Do not quote the output\n"),stderr);
345			fputs(_(" -V, --version Output version information\n"),stderr);
346			exit(2);
347			}
348
349			/* Exit codes:
350			* 0) No errors, succesful operation.
351			* 1) getopt(3) returned an error.
352			* 2) A problem with parameter parsing for getopt(1).
353			* 3) Internal error, out of memory
354			* 4) Returned for -T
355			*/
356
357			static struct option longopts[]={ {"options",required_argument,NULL,'o'},
358			{"longoptions",required_argument,NULL,'l'},
359			{"quiet",no_argument,NULL,'q'},
360			{"quiet-output",no_argument,NULL,'Q'},
361			{"shell",required_argument,NULL,'s'},
362			{"test",no_argument,NULL,'T'},
363			{"unquoted",no_argument,NULL,'u'},
364			{"help",no_argument,NULL,'h'},
365			{"alternative",no_argument,NULL,'a'},
366			{"name",required_argument,NULL,'n'},
367			{"version",no_argument,NULL,'V'},
368			{NULL,0,NULL,0}
369			};
370
371			/* Stop scanning as soon as a non-option argument is found! */
372			static const char *shortopts="+ao:l:n:qQs:TuhV";
373
374			int main(int argc, char *argv[])
375			{
376			char *optstr=NULL;
377			char *name=NULL;
378			int opt;
379			int compatible=0;
380
381			#if WITHOUT_GETTEXT
382			#else
383			setlocale(LC_ALL,"");
384			bindtextdomain(PACKAGE, LOCALEDIR);
385			textdomain(PACKAGE);
386			#endif
387
388			init_longopt();
389
390			if (getenv("GETOPT_COMPATIBLE"))
391			compatible=1;
392
393			if (argc == 1)
394			{
395			if (compatible) {
396	frodo	317	/*
397			* For some reason, the original getopt gave no error
398			* when there were no arguments.
399			*/
400	frodo	259	printf(" --\n");
401			exit(0);
402			}
403			else
404			parse_error(_("missing optstring argument"));
405			}
406
407			if (argv[1][0] != '-' \|\| compatible) {
408			quote=0;
409			optstr=our_malloc(strlen(argv[1])+1);
410			strcpy(optstr,argv[1]+strspn(argv[1],"-+"));
411			argv[1]=argv[0];
412			exit(generate_output(argv+1,argc-1,optstr,long_options));
413			}
414
415			while ((opt=getopt_long(argc,argv,shortopts,longopts,NULL)) != EOF)
416			switch (opt) {
417			case 'a':
418			alternative=1;
419			break;
420			case 'h':
421			print_help();
422			exit(0);
423			case 'o':
424			if (optstr)
425			free(optstr);
426			optstr=our_malloc(strlen(optarg)+1);
427			strcpy(optstr,optarg);
428			break;
429			case 'l':
430			add_long_options(optarg);
431			break;
432			case 'n':
433			if (name)
434			free(name);
435			name=our_malloc(strlen(optarg)+1);
436			strcpy(name,optarg);
437			break;
438			case 'q':
439			quiet_errors=1;
440			break;
441			case 'Q':
442			quiet_output=1;
443			break;
444			case 's':
445			set_shell(optarg);
446			break;
447			case 'T':
448			exit(4);
449			case 'u':
450			quote=0;
451			break;
452			case 'V':
453	frodo	263	printf(_("getopt (enhanced) 1.1.4\n"));
454	frodo	259	exit(0);
455			case '?':
456			case ':':
457			parse_error(NULL);
458			default:
459			parse_error(_("internal error, contact the author."));
460			}
461
462			if (!optstr)
463			{
464			if (optind >= argc)
465			parse_error(_("missing optstring argument"));
466			else {
467			optstr=our_malloc(strlen(argv[optind])+1);
468			strcpy(optstr,argv[optind]);
469			optind++;
470			}
471			}
472			if (name)
473			argv[optind-1]=name;
474			else
475			argv[optind-1]=argv[0];
476			exit(generate_output(argv+optind-1,argc-optind+1,optstr,long_options));
477			}
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