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
 */

/* 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
 */
#define GETOPT_EXIT_CODE        1
#define PARAMETER_EXIT_CODE     2
#define XALLOC_EXIT_CODE        3
#define TEST_EXIT_CODE          4


#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(XALLOC_EXIT_CODE);
        }
        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(XALLOC_EXIT_CODE);
        }
        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 = EXIT_SUCCESS;   /* 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 = GETOPT_EXIT_CODE;
                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(PARAMETER_EXIT_CODE);
}

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(PARAMETER_EXIT_CODE);
}
        
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");
                        return EXIT_SUCCESS;
                }
                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];
                return 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();
                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':
                        return TEST_EXIT_CODE;
                case 'u':
                        quote=0;
                        break;
                case 'V':
                        printf(_("getopt (enhanced) 1.1.4\n"));
                        return EXIT_SUCCESS;
                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];
        return 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	frodo	318	/* Exit codes:
43			* 0) No errors, succesful operation.
44			* 1) getopt(3) returned an error.
45			* 2) A problem with parameter parsing for getopt(1).
46			* 3) Internal error, out of memory
47			* 4) Returned for -T
48			*/
49			#define GETOPT_EXIT_CODE 1
50			#define PARAMETER_EXIT_CODE 2
51			#define XALLOC_EXIT_CODE 3
52			#define TEST_EXIT_CODE 4
53
54
55	frodo	259	#include <stdio.h>
56			#include <stdlib.h>
57			#include <string.h>
58			#include <unistd.h>
59			#include <ctype.h>
60
61			#if LIBCGETOPT
62			#include <getopt.h>
63			#else
64			#include "getopt.h"
65			#endif
66
67			#include "nls.h"
68
69			/* NON_OPT is the code that is returned when a non-option is found in '+'
70	frodo	317	* mode */
71	frodo	259	#define NON_OPT 1
72			/* LONG_OPT is the code that is returned when a long option is found. */
73			#define LONG_OPT 2
74
75			/* The shells recognized. */
76			typedef enum {BASH,TCSH} shell_t;
77
78
79			/* Some global variables that tells us how to parse. */
80	frodo	317	shell_t shell=BASH; /* The shell we generate output for. */
81			int quiet_errors=0; /* 0 is not quiet. */
82			int quiet_output=0; /* 0 is not quiet. */
83			int quote=1; /* 1 is do quote. */
84			int alternative=0; /* 0 is getopt_long, 1 is getopt_long_only */
85	frodo	259
86			/* Function prototypes */
87			void *our_malloc(size_t size);
88			void our_realloc(void ptr, size_t size);
89			const char normalize(const char arg);
90			int generate_output(char * argv[],int argc,const char *optstr,
91			const struct option *longopts);
92			int main(int argc, char *argv[]);
93			void parse_error(const char *message);
94			void add_long_options(char *options);
95			void add_longopt(const char *name,int has_arg);
96			void print_help(void);
97			void set_shell(const char *new_shell);
98			void set_initial_shell(void);
99
100			void *our_malloc(size_t size)
101			{
102			void *ret=malloc(size);
103			if (! ret) {
104			fprintf(stderr,_("%s: Out of memory!\n"),"getopt");
105	frodo	318	exit(XALLOC_EXIT_CODE);
106	frodo	259	}
107			return(ret);
108			}
109
110			void our_realloc(void ptr, size_t size)
111			{
112			void *ret=realloc(ptr,size);
113			if (! ret && size) {
114			fprintf(stderr,_("%s: Out of memory!\n"),"getopt");
115	frodo	318	exit(XALLOC_EXIT_CODE);
116	frodo	259	}
117			return(ret);
118			}
119
120			/*
121	frodo	317	* This function 'normalizes' a single argument: it puts single quotes
122			* around it and escapes other special characters. If quote is false, it
123			* just returns its argument.
124			*
125	frodo	259	* Bash only needs special treatment for single quotes; tcsh also recognizes
126	frodo	317	* exclamation marks within single quotes, and nukes whitespace. This
127			* function returns a pointer to a buffer that is overwritten by each call.
128	frodo	259	*/
129			const char normalize(const char arg)
130			{
131			static char *BUFFER=NULL;
132			const char *argptr=arg;
133			char *bufptr;
134
135			if (BUFFER != NULL)
136			free(BUFFER);
137
138	frodo	317	if (!quote) {
139			/* Just copy arg */
140	frodo	259	BUFFER=our_malloc(strlen(arg)+1);
141
142			strcpy(BUFFER,arg);
143			return BUFFER;
144			}
145
146	frodo	317	/*
147			* Each character in arg may take upto four characters in the
148			* result: For a quote we need a closing quote, a backslash, a quote
149			* and an opening quote! We need also the global opening and closing
150			* quote, and one extra character for '\0'.
151			*/
152	frodo	259	BUFFER=our_malloc(strlen(arg)*4+3);
153
154			bufptr=BUFFER;
155			*bufptr++='\'';
156
157			while (*argptr) {
158			if (*argptr == '\'') {
159			/* Quote: replace it with: '\'' */
160			*bufptr++='\'';
161			*bufptr++='\\';
162			*bufptr++='\'';
163			*bufptr++='\'';
164			} else if (shell==TCSH && *argptr=='!') {
165			/* Exclamation mark: replace it with: \! */
166			*bufptr++='\'';
167			*bufptr++='\\';
168			*bufptr++='!';
169			*bufptr++='\'';
170			} else if (shell==TCSH && *argptr=='\n') {
171			/* Newline: replace it with: \n */
172			*bufptr++='\\';
173			*bufptr++='n';
174			} else if (shell==TCSH && isspace(*argptr)) {
175			/* Non-newline whitespace: replace it with \<ws> */
176			*bufptr++='\'';
177			*bufptr++='\\';
178			bufptr++=argptr;
179			*bufptr++='\'';
180			} else
181			/* Just copy */
182			bufptr++=argptr;
183			argptr++;
184			}
185			*bufptr++='\'';
186			*bufptr++='\0';
187			return BUFFER;
188			}
189
190			/*
191			* Generate the output. argv[0] is the program name (used for reporting errors).
192			* argv[1..] contains the options to be parsed. argc must be the number of
193			* elements in argv (ie. 1 if there are no options, only the program name),
194			* optstr must contain the short options, and longopts the long options.
195			* Other settings are found in global variables.
196			*/
197			int generate_output(char * argv[],int argc,const char *optstr,
198			const struct option *longopts)
199			{
200	frodo	318	int exit_code = EXIT_SUCCESS; /* Assume everything will be OK */
201	frodo	259	int opt;
202			int longindex;
203			const char *charptr;
204
205	frodo	317	if (quiet_errors)
206			/* No error reporting from getopt(3) */
207	frodo	259	opterr=0;
208	frodo	317	/* Reset getopt(3) */
209			optind=0;
210	frodo	259
211			while ((opt = (alternative?
212			getopt_long_only(argc,argv,optstr,longopts,&longindex):
213			getopt_long(argc,argv,optstr,longopts,&longindex)))
214			!= EOF)
215			if (opt == '?' \|\| opt == ':' )
216	frodo	318	exit_code = GETOPT_EXIT_CODE;
217	frodo	259	else if (!quiet_output)
218			{
219			if (opt == LONG_OPT) {
220			printf(" --%s",longopts[longindex].name);
221			if (longopts[longindex].has_arg)
222			printf(" %s",
223			normalize(optarg?optarg:""));
224			} else if (opt == NON_OPT)
225			printf(" %s",normalize(optarg));
226			else {
227			printf(" -%c",opt);
228			charptr = strchr(optstr,opt);
229			if (charptr != NULL && *++charptr == ':')
230			printf(" %s",
231			normalize(optarg?optarg:""));
232			}
233			}
234
235			if (! quiet_output) {
236			printf(" --");
237			while (optind < argc)
238			printf(" %s",normalize(argv[optind++]));
239			printf("\n");
240			}
241			return exit_code;
242			}
243
244			/*
245	frodo	317	* Report an error when parsing getopt's own arguments. If message is NULL,
246			* we already sent a message, we just exit with a helpful hint.
247	frodo	259	*/
248			void parse_error(const char *message)
249			{
250			if (message)
251			fprintf(stderr,"getopt: %s\n",message);
252			fputs(_("Try `getopt --help' for more information.\n"),stderr);
253	frodo	318	exit(PARAMETER_EXIT_CODE);
254	frodo	259	}
255
256			static struct option *long_options=NULL;
257			static int long_options_length=0; /* Length of array */
258			static int long_options_nr=0; /* Nr of used elements in array */
259			#define LONG_OPTIONS_INCR 10
260			#define init_longopt() add_longopt(NULL,0)
261
262			/* Register a long option. The contents of name is copied. */
263			void add_longopt(const char *name,int has_arg)
264			{
265			char *tmp;
266	frodo	317	if (!name) {
267			/* init */
268	frodo	259	free(long_options);
269			long_options=NULL;
270			long_options_length=0;
271			long_options_nr=0;
272			}
273
274			if (long_options_nr == long_options_length) {
275			long_options_length += LONG_OPTIONS_INCR;
276			long_options=our_realloc(long_options,
277			sizeof(struct option) *
278			long_options_length);
279			}
280
281			long_options[long_options_nr].name=NULL;
282			long_options[long_options_nr].has_arg=0;
283			long_options[long_options_nr].flag=NULL;
284			long_options[long_options_nr].val=0;
285
286	frodo	317	if (long_options_nr) {
287			/* Not for init! */
288	frodo	259	long_options[long_options_nr-1].has_arg=has_arg;
289			long_options[long_options_nr-1].flag=NULL;
290			long_options[long_options_nr-1].val=LONG_OPT;
291			tmp = our_malloc(strlen(name)+1);
292			strcpy(tmp,name);
293			long_options[long_options_nr-1].name=tmp;
294			}
295			long_options_nr++;
296			}
297
298
299			/*
300	frodo	317	* Register several long options. options is a string of long options,
301			* separated by commas or whitespace. This nukes options!
302	frodo	259	*/
303			void add_long_options(char *options)
304			{
305			int arg_opt;
306			char *tokptr=strtok(options,", \t\n");
307			while (tokptr) {
308			arg_opt=no_argument;
309			if (strlen(tokptr) > 0) {
310			if (tokptr[strlen(tokptr)-1] == ':') {
311			if (tokptr[strlen(tokptr)-2] == ':') {
312			tokptr[strlen(tokptr)-2]='\0';
313			arg_opt=optional_argument;
314			} else {
315			tokptr[strlen(tokptr)-1]='\0';
316			arg_opt=required_argument;
317			}
318			if (strlen(tokptr) == 0)
319			parse_error(_("empty long option after "
320			"-l or --long argument"));
321			}
322			add_longopt(tokptr,arg_opt);
323			}
324			tokptr=strtok(NULL,", \t\n");
325			}
326			}
327
328			void set_shell(const char *new_shell)
329			{
330			if (!strcmp(new_shell,"bash"))
331			shell=BASH;
332			else if (!strcmp(new_shell,"tcsh"))
333			shell=TCSH;
334			else if (!strcmp(new_shell,"sh"))
335			shell=BASH;
336			else if (!strcmp(new_shell,"csh"))
337			shell=TCSH;
338			else
339			parse_error(_("unknown shell after -s or --shell argument"));
340			}
341
342			void print_help(void)
343			{
344			fputs(_("Usage: getopt optstring parameters\n"),stderr);
345			fputs(_(" getopt [options] [--] optstring parameters\n"),stderr);
346			fputs(_(" getopt [options] -o\|--options optstring [options] [--]\n"),stderr);
347			fputs(_(" parameters\n"),stderr);
348			fputs(_(" -a, --alternative Allow long options starting with single -\n"),stderr);
349			fputs(_(" -h, --help This small usage guide\n"),stderr);
350			fputs(_(" -l, --longoptions=longopts Long options to be recognized\n"),stderr);
351			fputs(_(" -n, --name=progname The name under which errors are reported\n"),stderr);
352			fputs(_(" -o, --options=optstring Short options to be recognized\n"),stderr);
353			fputs(_(" -q, --quiet Disable error reporting by getopt(3)\n"),stderr);
354			fputs(_(" -Q, --quiet-output No normal output\n"),stderr);
355			fputs(_(" -s, --shell=shell Set shell quoting conventions\n"),stderr);
356			fputs(_(" -T, --test Test for getopt(1) version\n"),stderr);
357			fputs(_(" -u, --unqote Do not quote the output\n"),stderr);
358			fputs(_(" -V, --version Output version information\n"),stderr);
359	frodo	318	exit(PARAMETER_EXIT_CODE);
360	frodo	259	}
361
362			static struct option longopts[]={ {"options",required_argument,NULL,'o'},
363			{"longoptions",required_argument,NULL,'l'},
364			{"quiet",no_argument,NULL,'q'},
365			{"quiet-output",no_argument,NULL,'Q'},
366			{"shell",required_argument,NULL,'s'},
367			{"test",no_argument,NULL,'T'},
368			{"unquoted",no_argument,NULL,'u'},
369			{"help",no_argument,NULL,'h'},
370			{"alternative",no_argument,NULL,'a'},
371			{"name",required_argument,NULL,'n'},
372			{"version",no_argument,NULL,'V'},
373			{NULL,0,NULL,0}
374			};
375
376			/* Stop scanning as soon as a non-option argument is found! */
377			static const char *shortopts="+ao:l:n:qQs:TuhV";
378
379			int main(int argc, char *argv[])
380			{
381			char *optstr=NULL;
382			char *name=NULL;
383			int opt;
384			int compatible=0;
385
386			#if WITHOUT_GETTEXT
387			#else
388			setlocale(LC_ALL,"");
389			bindtextdomain(PACKAGE, LOCALEDIR);
390			textdomain(PACKAGE);
391			#endif
392
393			init_longopt();
394
395			if (getenv("GETOPT_COMPATIBLE"))
396			compatible=1;
397
398			if (argc == 1)
399			{
400			if (compatible) {
401	frodo	317	/*
402			* For some reason, the original getopt gave no error
403			* when there were no arguments.
404			*/
405	frodo	259	printf(" --\n");
406	frodo	318	return EXIT_SUCCESS;
407	frodo	259	}
408			else
409			parse_error(_("missing optstring argument"));
410
411	frodo	318
412	frodo	259	if (argv[1][0] != '-' \|\| compatible) {
413			quote=0;
414			optstr=our_malloc(strlen(argv[1])+1);
415			strcpy(optstr,argv[1]+strspn(argv[1],"-+"));
416			argv[1]=argv[0];
417	frodo	318	return generate_output(argv+1,argc-1,optstr,long_options);
418	frodo	259	}
419
420			while ((opt=getopt_long(argc,argv,shortopts,longopts,NULL)) != EOF)
421			switch (opt) {
422			case 'a':
423			alternative=1;
424			break;
425			case 'h':
426			print_help();
427			case 'o':
428			if (optstr)
429			free(optstr);
430			optstr=our_malloc(strlen(optarg)+1);
431			strcpy(optstr,optarg);
432			break;
433			case 'l':
434			add_long_options(optarg);
435			break;
436			case 'n':
437			if (name)
438			free(name);
439			name=our_malloc(strlen(optarg)+1);
440			strcpy(name,optarg);
441			break;
442			case 'q':
443			quiet_errors=1;
444			break;
445			case 'Q':
446			quiet_output=1;
447			break;
448			case 's':
449			set_shell(optarg);
450			break;
451			case 'T':
452	frodo	318	return TEST_EXIT_CODE;
453	frodo	259	case 'u':
454			quote=0;
455			break;
456			case 'V':
457	frodo	263	printf(_("getopt (enhanced) 1.1.4\n"));
458	frodo	318	return EXIT_SUCCESS;
459	frodo	259	case '?':
460			case ':':
461			parse_error(NULL);
462			default:
463			parse_error(_("internal error, contact the author."));
464			}
465
466			if (!optstr)
467			{
468			if (optind >= argc)
469			parse_error(_("missing optstring argument"));
470			else {
471			optstr=our_malloc(strlen(argv[optind])+1);
472			strcpy(optstr,argv[optind]);
473			optind++;
474			}
475			}
476			if (name)
477			argv[optind-1]=name;
478			else
479			argv[optind-1]=argv[0];
480	frodo	318	return generate_output(argv+optind-1,argc-optind+1,optstr,long_options);
481	frodo	259	}
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