diff options
| -rw-r--r-- | getopt/getopt.c | 364 |
1 files changed, 186 insertions, 178 deletions
diff --git a/getopt/getopt.c b/getopt/getopt.c index d7a768b4a..a211bcb16 100644 --- a/getopt/getopt.c +++ b/getopt/getopt.c @@ -1,21 +1,21 @@ /* - 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. -*/ + * 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. @@ -62,20 +62,20 @@ #include "xalloc.h" /* NON_OPT is the code that is returned when a non-option is found in '+' - mode */ + * 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; +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 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. */ /* Allow changing which getopt is in use with function pointer */ int (*getopt_long_fp) (int argc, char *const *argv, const char *optstr, @@ -83,76 +83,78 @@ int (*getopt_long_fp) (int argc, char *const *argv, const char *optstr, /* 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 int generate_output(char *argv[], int argc, const char *optstr, + const struct option *longopts); int main(int argc, char *argv[]); static void parse_error(const char *message); static void add_long_options(char *options); -static void add_longopt(const char *name,int has_arg); +static void add_longopt(const char *name, int has_arg); static void print_help(void); 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. + * 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. + * exclamation marks within single quotes, and nukes whitespace. This + * function returns a pointer to a buffer that is overwritten by each call. */ static const char *normalize(const char *arg) { - static char *BUFFER=NULL; - const char *argptr=arg; + static char *BUFFER = NULL; + const char *argptr = arg; char *bufptr; - if (!quote) { /* Just copy arg */ - BUFFER=xmalloc(strlen(arg)+1); - - strcpy(BUFFER,arg); + 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); + /* + * 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++='\''; + bufptr = BUFFER; + *bufptr++ = '\''; while (*argptr) { if (*argptr == '\'') { /* Quote: replace it with: '\'' */ - *bufptr++='\''; - *bufptr++='\\'; - *bufptr++='\''; - *bufptr++='\''; - } else if (shell==TCSH && *argptr=='!') { + *bufptr++ = '\''; + *bufptr++ = '\\'; + *bufptr++ = '\''; + *bufptr++ = '\''; + } else if (shell == TCSH && *argptr == '!') { /* Exclamation mark: replace it with: \! */ - *bufptr++='\''; - *bufptr++='\\'; - *bufptr++='!'; - *bufptr++='\''; - } else if (shell==TCSH && *argptr=='\n') { + *bufptr++ = '\''; + *bufptr++ = '\\'; + *bufptr++ = '!'; + *bufptr++ = '\''; + } else if (shell == TCSH && *argptr == '\n') { /* Newline: replace it with: \n */ - *bufptr++='\\'; - *bufptr++='n'; - } else if (shell==TCSH && isspace(*argptr)) { + *bufptr++ = '\\'; + *bufptr++ = 'n'; + } else if (shell == TCSH && isspace(*argptr)) { /* Non-newline whitespace: replace it with \<ws> */ - *bufptr++='\''; - *bufptr++='\\'; - *bufptr++=*argptr; - *bufptr++='\''; + *bufptr++ = '\''; + *bufptr++ = '\\'; + *bufptr++ = *argptr; + *bufptr++ = '\''; } else /* Just copy */ - *bufptr++=*argptr; + *bufptr++ = *argptr; argptr++; } - *bufptr++='\''; - *bufptr++='\0'; + *bufptr++ = '\''; + *bufptr++ = '\0'; return BUFFER; } @@ -163,145 +165,148 @@ static const char *normalize(const char *arg) * optstr must contain the short options, and longopts the long options. * Other settings are found in global variables. */ -static int generate_output(char * argv[],int argc,const char *optstr, - const struct option *longopts) +static int generate_output(char *argv[], int argc, const char *optstr, + const struct option *longopts) { - int exit_code = 0; /* We assume everything will be OK */ + int 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; - optind=0; /* Reset getopt(3) */ + if (quiet_errors) + /* No error reporting from getopt(3) */ + opterr = 0; + /* Reset getopt(3) */ + optind = 0; - while ((opt = (getopt_long_fp(argc,argv,optstr,longopts,&longindex))) - != EOF) - if (opt == '?' || opt == ':' ) + while ((opt = + (getopt_long_fp(argc, argv, optstr, longopts, &longindex))) + != EOF) + if (opt == '?' || opt == ':') exit_code = GETOPT_EXIT_CODE; - else if (!quiet_output) - { + 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)); + 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); + printf(" -%c", opt); + charptr = strchr(optstr, opt); if (charptr != NULL && *++charptr == ':') - printf(" %s", - normalize(optarg?optarg:"")); + printf(" %s", normalize(optarg ? optarg : "")); } } - - if (! quiet_output) { + + if (!quiet_output) { printf(" --"); - while (optind < argc) - printf(" %s",normalize(argv[optind++])); + 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. + * 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. */ -static void parse_error(const char *message) +static void __attribute__ ((__noreturn__)) parse_error(const char *message) { if (message) - fprintf(stderr,"getopt: %s\n",message); - fputs(_("Try `getopt --help' for more information.\n"),stderr); + warnx("%s", message); + fprintf(stderr, _("Try `%s --help' for more information.\n"), + program_invocation_short_name); 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 */ +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. */ -static void add_longopt(const char *name,int has_arg) +static void add_longopt(const char *name, int has_arg) { char *tmp; - if (!name) { /* init */ + if (!name) { + /* init */ free(long_options); - long_options=NULL; - long_options_length=0; - long_options_nr=0; + 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 = 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[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! + * Register several long options. options is a string of long options, + * separated by commas or whitespace. This nukes options! */ static void add_long_options(char *options) { int arg_opt; - char *tokptr=strtok(options,", \t\n"); + char *tokptr = strtok(options, ", \t\n"); while (tokptr) { - arg_opt=no_argument; + 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; + 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; + tokptr[strlen(tokptr) - 1] = '\0'; + arg_opt = required_argument; } if (strlen(tokptr) == 0) - parse_error(_("empty long option after " - "-l or --long argument")); + parse_error(_ + ("empty long option after " + "-l or --long argument")); } - add_longopt(tokptr,arg_opt); + add_longopt(tokptr, arg_opt); } - tokptr=strtok(NULL,", \t\n"); + tokptr = strtok(NULL, ", \t\n"); } } static 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; + 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")); + parse_error(_ + ("unknown shell after -s or --shell argument")); } static void __attribute__ ((__noreturn__)) print_help(void) @@ -328,10 +333,10 @@ static void __attribute__ ((__noreturn__)) print_help(void) int main(int argc, char *argv[]) { - char *optstr=NULL; - char *name=NULL; + char *optstr = NULL; + char *name = NULL; int opt; - int compatible=0; + int compatible = 0; /* Stop scanning as soon as a non-option argument is found! */ static const char *shortopts = "+ao:l:n:qQs:TuhV"; @@ -350,37 +355,39 @@ int main(int argc, char *argv[]) {NULL, 0, NULL, 0} }; - setlocale(LC_ALL,""); + setlocale(LC_ALL, ""); bindtextdomain(PACKAGE, LOCALEDIR); textdomain(PACKAGE); init_longopt(); getopt_long_fp = getopt_long; - if (getenv("GETOPT_COMPATIBLE")) - compatible=1; + if (getenv("GETOPT_COMPATIBLE")) + compatible = 1; - if (argc == 1) - { + if (argc == 1) { if (compatible) { - /* For some reason, the original getopt gave no error - when there were no arguments. */ + /* + * For some reason, the original getopt gave no + * error when there were no arguments. + */ printf(" --\n"); return EXIT_SUCCESS; - } - else + } else parse_error(_("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]; - return generate_output(argv+1,argc-1,optstr,long_options); + quote = 0; + optstr = xmalloc(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) + + while ((opt = + getopt_long(argc, argv, shortopts, longopts, NULL)) != EOF) switch (opt) { case 'a': getopt_long_fp = getopt_long_only; @@ -389,22 +396,22 @@ int main(int argc, char *argv[]) print_help(); case 'o': free(optstr); - optstr=xmalloc(strlen(optarg)+1); - strcpy(optstr,optarg); + optstr = xmalloc(strlen(optarg) + 1); + strcpy(optstr, optarg); break; case 'l': add_long_options(optarg); break; case 'n': free(name); - name=xmalloc(strlen(optarg)+1); - strcpy(name,optarg); + name = xmalloc(strlen(optarg) + 1); + strcpy(name, optarg); break; case 'q': - quiet_errors=1; + quiet_errors = 1; break; case 'Q': - quiet_output=1; + quiet_output = 1; break; case 's': set_shell(optarg); @@ -412,7 +419,7 @@ int main(int argc, char *argv[]) case 'T': return TEST_EXIT_CODE; case 'u': - quote=0; + quote = 0; break; case 'V': printf(_("%s from %s\n"), @@ -426,19 +433,20 @@ int main(int argc, char *argv[]) parse_error(_("internal error, contact the author.")); } - if (!optstr) - { + if (!optstr) { if (optind >= argc) parse_error(_("missing optstring argument")); else { - optstr=xmalloc(strlen(argv[optind])+1); - strcpy(optstr,argv[optind]); + optstr = xmalloc(strlen(argv[optind]) + 1); + strcpy(optstr, argv[optind]); optind++; } } if (name) - argv[optind-1]=name; + argv[optind - 1] = name; else - argv[optind-1]=argv[0]; - return generate_output(argv+optind-1,argc-optind+1,optstr,long_options); + argv[optind - 1] = argv[0]; + + return generate_output(argv + optind - 1, argc-optind + 1, + optstr, long_options); } |