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/* bashgetopt.c -- `getopt' for use by the builtins. */
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/* Copyright (C) 1992 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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You should have received a copy of the GNU General Public License along
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with Bash; see the file COPYING. If not, write to the Free Software
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Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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#if defined (HAVE_UNISTD_H)
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#include "../bashansi.h"
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#include <chartypes.h>
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#define ERR(S, C) builtin_error("%s%c", (S), (C))
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static WORD_LIST *lhead = (WORD_LIST *)NULL;
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WORD_LIST *lcurrent = (WORD_LIST *)NULL;
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WORD_LIST *loptend; /* Points to the first non-option argument in the list */
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internal_getopt(list, opts)
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int plus; /* nonzero means to handle +option */
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list_optarg = (char *)NULL;
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loptend = (WORD_LIST *)NULL; /* No non-option arguments */
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if (list != lhead || lhead == 0) {
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/* Hmmm.... called with a different word list. Reset. */
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lcurrent = lhead = list;
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loptend = (WORD_LIST *)NULL;
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(lcurrent->word->word[0] != '-' || lcurrent->word->word[1] == '\0')) {
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lhead = (WORD_LIST *)NULL;
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} else if (lcurrent->word->word[0] == '-' &&
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lcurrent->word->word[1] == '-' &&
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lcurrent->word->word[2] == 0) {
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lhead = (WORD_LIST *)NULL;
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loptend = lcurrent->next;
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list_optopt = c = lcurrent->word->word[sp];
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if (c == ':' || (cp = strchr(opts, c)) == NULL) {
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ERR("illegal option: -", c);
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if (lcurrent->word->word[++sp] == '\0') {
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lcurrent = lcurrent->next;
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loptend = lcurrent->next;
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if (*++cp == ':' || *cp == ';') {
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/* `:': Option requires an argument. */
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/* `;': option argument may be missing */
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/* We allow -l2 as equivalent to -l 2 */
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if (lcurrent->word->word[sp+1]) {
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list_optarg = lcurrent->word->word + sp + 1;
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lcurrent = lcurrent->next;
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/* If the specifier is `;', don't set optarg if the next
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argument looks like another option. */
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} else if (lcurrent->next && (*cp == ':' || lcurrent->next->word->word[0] != '-')) {
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lcurrent = lcurrent->next;
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list_optarg = lcurrent->word->word;
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lcurrent = lcurrent->next;
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} else if (*cp == ';') {
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list_optarg = (char *)NULL;
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lcurrent = lcurrent->next;
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} else { /* lcurrent->next == NULL */
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ERR("option requires an argument: -", c);
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list_optarg = (char *)NULL;
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} else if (*cp == '#') {
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/* optional numeric argument */
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if (lcurrent->word->word[sp+1]) {
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if (DIGIT(lcurrent->word->word[sp+1])) {
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list_optarg = lcurrent->word->word + sp + 1;
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lcurrent = lcurrent->next;
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list_optarg = (char *)NULL;
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if (lcurrent->next && legal_number(lcurrent->next->word->word, (long *)0)) {
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lcurrent = lcurrent->next;
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list_optarg = lcurrent->word->word;
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lcurrent = lcurrent->next;
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list_optarg = (char *)NULL;
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/* No argument, just return the option. */
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if (lcurrent->word->word[++sp] == '\0') {
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lcurrent = lcurrent->next;
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list_optarg = (char *)NULL;
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* reset_internal_getopt -- force the in[ft]ernal getopt to reset
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reset_internal_getopt ()
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lhead = lcurrent = loptend = (WORD_LIST *)NULL;
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#ifdef INCLUDE_UNUSED