1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
4  * Copyright (c) 2003-2008 Tim Kientzle
27  * Short options for bsdunzip.  Please keep this sorted.
35  * The symbolic names for options that lack a short equivalent are
44 	int equivalent;    /* Equivalent short option. */
75 	long_prefix = "--";  in bsdunzip_getopt()
78 	bsdunzip->argument = NULL;  in bsdunzip_getopt()
81 	if (bsdunzip->getopt_state == state_start) {  in bsdunzip_getopt()
83 		++bsdunzip->argv;  in bsdunzip_getopt()
84 		--bsdunzip->argc;  in bsdunzip_getopt()
85 		if (*bsdunzip->argv == NULL)  in bsdunzip_getopt()
86 			return (-1);  in bsdunzip_getopt()
87 		bsdunzip->getopt_state = state_next_word;  in bsdunzip_getopt()
93 	if (bsdunzip->getopt_state == state_next_word) {  in bsdunzip_getopt()
95 		if (bsdunzip->argv[0] == NULL)  in bsdunzip_getopt()
96 			return (-1);  in bsdunzip_getopt()
97 		/* Doesn't start with '-', so no more options. */  in bsdunzip_getopt()
98 		if (bsdunzip->argv[0][0] != '-')  in bsdunzip_getopt()
99 			return (-1);  in bsdunzip_getopt()
100 		/* "--" marks end of options; consume it and return. */  in bsdunzip_getopt()
101 		if (strcmp(bsdunzip->argv[0], "--") == 0) {  in bsdunzip_getopt()
102 			++bsdunzip->argv;  in bsdunzip_getopt()
103 			--bsdunzip->argc;  in bsdunzip_getopt()
105 			return (-1);  in bsdunzip_getopt()
108 		bsdunzip->getopt_word = *bsdunzip->argv++;  in bsdunzip_getopt()
109 		--bsdunzip->argc;  in bsdunzip_getopt()
111 		if (bsdunzip->getopt_word[1] == '-') {  in bsdunzip_getopt()
113 			bsdunzip->getopt_state = state_long;  in bsdunzip_getopt()
114 			bsdunzip->getopt_word += 2; /* Skip leading '--' */  in bsdunzip_getopt()
116 			/* Set up short option parser. */  in bsdunzip_getopt()
117 			bsdunzip->getopt_state = state_short;  in bsdunzip_getopt()
118 			++bsdunzip->getopt_word;  /* Skip leading '-' */  in bsdunzip_getopt()
123 	 * We're parsing a group of POSIX-style single-character options.  in bsdunzip_getopt()
125 	if (bsdunzip->getopt_state == state_short) {  in bsdunzip_getopt()
126 		/* Peel next option off of a group of short options. */  in bsdunzip_getopt()
127 		opt = *bsdunzip->getopt_word++;  in bsdunzip_getopt()
130 			bsdunzip->getopt_state = state_next_word;  in bsdunzip_getopt()
143 			/* If arg is run-in, bsdunzip->getopt_word already points to it. */  in bsdunzip_getopt()
144 			if (bsdunzip->getopt_word[0] == '\0') {  in bsdunzip_getopt()
146 				bsdunzip->getopt_word = *bsdunzip->argv;  in bsdunzip_getopt()
147 				if (bsdunzip->getopt_word == NULL) {  in bsdunzip_getopt()
149 					    "Option -%c requires an argument",  in bsdunzip_getopt()
153 				++bsdunzip->argv;  in bsdunzip_getopt()
154 				--bsdunzip->argc;  in bsdunzip_getopt()
157 			bsdunzip->getopt_state = state_next_word;  in bsdunzip_getopt()
158 			bsdunzip->argument = bsdunzip->getopt_word;  in bsdunzip_getopt()
163 	if (bsdunzip->getopt_state == state_long) {  in bsdunzip_getopt()
165 		bsdunzip->getopt_state = state_next_word;  in bsdunzip_getopt()
168 		p = strchr(bsdunzip->getopt_word, '=');  in bsdunzip_getopt()
170 			optlength = (size_t)(p - bsdunzip->getopt_word);  in bsdunzip_getopt()
171 			bsdunzip->argument = (char *)(uintptr_t)(p + 1);  in bsdunzip_getopt()
173 			optlength = strlen(bsdunzip->getopt_word);  in bsdunzip_getopt()
177 		for (popt = bsdunzip_longopts; popt->name != NULL; popt++) {  in bsdunzip_getopt()
178 			/* Short-circuit if first chars don't match. */  in bsdunzip_getopt()
179 			if (popt->name[0] != bsdunzip->getopt_word[0])  in bsdunzip_getopt()
182 			if (strncmp(bsdunzip->getopt_word, popt->name, optlength) == 0) {  in bsdunzip_getopt()
186 				if (strlen(popt->name) == optlength) {  in bsdunzip_getopt()
197 			    long_prefix, bsdunzip->getopt_word);  in bsdunzip_getopt()
202 			    "Ambiguous option %s%s (matches --%s and --%s)",  in bsdunzip_getopt()
203 			    long_prefix, bsdunzip->getopt_word, match->name, match2->name);  in bsdunzip_getopt()
208 		if (match->required) {  in bsdunzip_getopt()
210 			if (bsdunzip->argument == NULL) {  in bsdunzip_getopt()
211 				bsdunzip->argument = *bsdunzip->argv;  in bsdunzip_getopt()
212 				if (bsdunzip->argument == NULL) {  in bsdunzip_getopt()
215 					    long_prefix, match->name);  in bsdunzip_getopt()
218 				++bsdunzip->argv;  in bsdunzip_getopt()
219 				--bsdunzip->argc;  in bsdunzip_getopt()
224 			if (bsdunzip->argument != NULL) {  in bsdunzip_getopt()
227 				    long_prefix, match->name);  in bsdunzip_getopt()
231 		return (match->equivalent);  in bsdunzip_getopt()