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-rw-r--r--getopt.c402
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diff --git a/getopt.c b/getopt.c
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--- a/getopt.c
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@@ -1,402 +0,0 @@
-/*
- * getopt.c - Enhanced implementation of BSD getopt(1)
- * Copyright (c) 1997, 1998, 1999, 2000 Frodo Looijaard <frodol@dds.nl>
- *
- * 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@misiek.eu.org>)
- * Ported to Busybox - Alfred M. Szmidt <ams@trillian.itslinux.org>
- * Removed --version/-V and --help/-h in
- * Removed prase_error(), using error_msg() from Busybox instead
- * Replaced our_malloc with xmalloc and our_realloc with xrealloc
- *
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <ctype.h>
-#include <getopt.h>
-
-#include "busybox.h"
-
-/* NON_OPT is the code that is returned when a non-option is found in '+'
- mode */
-static const int NON_OPT = 1;
-/* LONG_OPT is the code that is returned when a long option is found. */
-static const int LONG_OPT = 2;
-
-/* The shells recognized. */
-typedef enum {BASH,TCSH} shell_t;
-
-
-/* Some global variables that tells us how to parse. */
-static shell_t shell=BASH; /* The shell we generate output for. */
-static int quiet_errors=0; /* 0 is not quiet. */
-static int quiet_output=0; /* 0 is not quiet. */
-static int quote=1; /* 1 is do quote. */
-static int alternative=0; /* 0 is getopt_long, 1 is getopt_long_only */
-
-/* Function prototypes */
-static const char *normalize(const char *arg);
-static int generate_output(char * argv[],int argc,const char *optstr,
- const struct option *longopts);
-static void add_long_options(char *options);
-static void add_longopt(const char *name,int has_arg);
-static void set_shell(const char *new_shell);
-
-
-/*
- * 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=xmalloc(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=xmalloc(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;
-}
-
-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 */
-static const int 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=xrealloc(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 = xmalloc(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, tlen;
- char *tokptr=strtok(options,", \t\n");
- while (tokptr) {
- arg_opt=no_argument;
- tlen=strlen(tokptr);
- if (tlen > 0) {
- if (tokptr[tlen-1] == ':') {
- if (tlen > 1 && tokptr[tlen-2] == ':') {
- tokptr[tlen-2]='\0';
- tlen -= 2;
- arg_opt=optional_argument;
- } else {
- tokptr[tlen-1]='\0';
- tlen -= 1;
- arg_opt=required_argument;
- }
- if (tlen == 0)
- error_msg("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
- error_msg("unknown shell after -s or --shell argument");
-}
-
-
-/* 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'},
- {"alternative",no_argument,NULL,'a'},
- {"name",required_argument,NULL,'n'},
- {NULL,0,NULL,0}
-};
-
-/* Stop scanning as soon as a non-option argument is found! */
-static const char *shortopts="+ao:l:n:qQs:Tu";
-
-
-int getopt_main(int argc, char *argv[])
-{
- char *optstr=NULL;
- char *name=NULL;
- int opt;
- int compatible=0;
-
- 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
- error_msg_and_die("missing optstring argument");
- }
-
- if (argv[1][0] != '-' || compatible) {
- quote=0;
- optstr=xmalloc(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 'o':
- if (optstr)
- free(optstr);
- optstr=xmalloc(strlen(optarg)+1);
- strcpy(optstr,optarg);
- break;
- case 'l':
- add_long_options(optarg);
- break;
- case 'n':
- if (name)
- free(name);
- name=xmalloc(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;
- default:
- show_usage();
- }
-
- if (!optstr) {
- if (optind >= argc)
- error_msg_and_die("missing optstring argument");
- else {
- optstr=xmalloc(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));
-}
-
-/*
- Local Variables:
- c-file-style: "linux"
- c-basic-offset: 4
- tab-width: 4
- End:
-*/
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