1 /* $NetBSD: h_getopt_long.c,v 1.1 2011/01/01 23:56:49 pgoyette Exp $ */
2
3 /*-
4 * Copyright (c) 2007 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <ctype.h>
33 #include <err.h>
34 #include <getopt.h>
35 #include <stdio.h>
36 #include <string.h>
37 #include <stdlib.h>
38 #include <unistd.h>
39
40 #define SKIPWS(p) while (isspace((int)(*p))) p++
41 #define WS "\t\n "
42
43 int
main(int argc,char * argv[])44 main(int argc, char *argv[])
45 {
46 size_t len, lineno = 0;
47 char *line, *eptr, *longopt, *ptr, *optstring = NULL, *result = NULL;
48 char buf[1024];
49 char *args[128];
50 char arg[256];
51 int nargs = -1;
52 int c;
53 int nlongopts = 0;
54 int maxnlongopts = 0;
55 int *longopt_flags = NULL;
56 struct option *longopts = NULL;
57
58 while ((line = fparseln(stdin, &len, &lineno, NULL, 0)) != NULL) {
59 if (strncmp(line, "optstring:", 10) == 0) {
60 if (optstring)
61 free(optstring);
62 optstring = strtok(&line[11], WS);
63 if (optstring == NULL)
64 errx(1, "missing optstring at line %ld",
65 (unsigned long)lineno);
66 optstring = strdup(optstring);
67 } else if (strncmp(line, "longopts:", 9) == 0) {
68 if (longopts) {
69 int i;
70 for (i = 0; i < nlongopts; i++)
71 if (longopts[i].name != NULL)
72 free(__UNCONST(longopts[i].name));
73 free(longopts);
74 }
75 if (longopt_flags)
76 free(longopt_flags);
77 nlongopts = 0;
78 ptr = strtok(&line[10], WS);
79 if (ptr == NULL)
80 errx(1, "missing longopts at line %ld",
81 (unsigned long)lineno);
82 maxnlongopts = strtoul(ptr, &eptr, 10);
83 if (*eptr != '\0')
84 warnx("garbage in longopts at line %ld",
85 (unsigned long)lineno);
86 maxnlongopts++; /* space for trailer */
87 longopts =
88 (struct option *)calloc(sizeof(struct option),
89 maxnlongopts);
90 if (longopts == NULL)
91 err(1, "calloc");
92 longopt_flags = (int *)calloc(sizeof(int), maxnlongopts);
93 if (longopt_flags == NULL)
94 err(1, "calloc");
95 } else if (strncmp(line, "longopt:", 8) == 0) {
96 if (longopts == NULL)
97 errx(1, "longopt: without longopts at line %ld",
98 (unsigned long)lineno);
99 if (nlongopts >= maxnlongopts)
100 errx(1, "longopt: too many options at line %ld",
101 (unsigned long)lineno);
102 /* name */
103 ptr = &line[9];
104 SKIPWS(ptr);
105 longopt = strsep(&ptr, ",");
106 if (longopt == NULL)
107 errx(1, "missing longopt at line %ld",
108 (unsigned long)lineno);
109 longopts[nlongopts].name = strdup(longopt);
110 /* has_arg */
111 SKIPWS(ptr);
112 longopt = strsep(&ptr, ",");
113 if (*longopt != '\0') {
114 if (strncmp(longopt, "0", 1) == 0 ||
115 strncmp(longopt, "no_argument", 2) == 0)
116 longopts[nlongopts].has_arg = no_argument;
117 else if (strncmp(longopt, "1", 1) == 0 ||
118 strncmp(longopt, "required_argument", 8) == 0)
119 longopts[nlongopts].has_arg = required_argument;
120 else if (strncmp(longopt, "2", 1) == 0 ||
121 strncmp(longopt, "optional_argument", 8) == 0)
122 longopts[nlongopts].has_arg = optional_argument;
123 else
124 errx(1, "unknown has_arg %s at line %ld",
125 longopt, (unsigned long)lineno);
126 }
127 /* flag */
128 SKIPWS(ptr);
129 longopt = strsep(&ptr, ",");
130 if (*longopt != '\0' &&
131 strncmp(longopt, "NULL", 4) != 0)
132 longopts[nlongopts].flag = &longopt_flags[nlongopts];
133 /* val */
134 SKIPWS(ptr);
135 longopt = strsep(&ptr, ",");
136 if (*longopt == '\0')
137 errx(1, "missing val at line %ld",
138 (unsigned long)lineno);
139 if (*longopt != '\'') {
140 longopts[nlongopts].val =
141 (int)strtoul(longopt, &eptr, 10);
142 if (*eptr != '\0')
143 errx(1, "invalid val at line %ld",
144 (unsigned long)lineno);
145 } else
146 longopts[nlongopts].val = (int)longopt[1];
147 nlongopts++;
148 } else if (strncmp(line, "args:", 5) == 0) {
149 for (; nargs >= 0; nargs--) {
150 if (args[nargs] != NULL)
151 free(args[nargs]);
152 }
153 args[nargs = 0] = strtok(&line[6], WS);
154 if (args[nargs] == NULL)
155 errx(1, "Missing args");
156
157 args[nargs] = strdup(args[nargs]);
158 while ((args[++nargs] = strtok(NULL, WS)) != NULL)
159 args[nargs] = strdup(args[nargs]);
160 } else if (strncmp(line, "result:", 7) == 0) {
161 int li;
162 buf[0] = '\0';
163 optind = optreset = 1;
164 if (result)
165 free(result);
166 result = strtok(&line[8], WS);
167 if (result == NULL)
168 errx(1, "missing result at line %ld",
169 (unsigned long)lineno);
170 if (optstring == NULL)
171 errx(1, "result: without optstring");
172 if (longopts == NULL || nlongopts == 0)
173 errx(1, "result: without longopts");
174 result = strdup(result);
175 if (nargs == -1)
176 errx(1, "result: without args");
177 li = -2;
178 while ((c = getopt_long(nargs, args, optstring,
179 longopts, &li)) != -1) {
180 if (c == ':')
181 errx(1, "`:' found as argument char");
182 if (li == -2) {
183 ptr = strchr(optstring, c);
184 if (ptr == NULL) {
185 snprintf(arg, sizeof(arg),
186 "!%c,", c);
187 strcat(buf, arg);
188 continue;
189 }
190 if (ptr[1] != ':')
191 snprintf(arg, sizeof(arg),
192 "%c,", c);
193 else
194 snprintf(arg, sizeof(arg),
195 "%c=%s,", c, optarg);
196 } else {
197 switch (longopts[li].has_arg) {
198 case no_argument:
199 snprintf(arg, sizeof(arg), "-%s,",
200 longopts[li].name);
201 break;
202 case required_argument:
203 snprintf(arg, sizeof(arg),
204 "-%s=%s,",
205 longopts[li].name, optarg);
206 break;
207 case optional_argument:
208 snprintf(arg, sizeof(arg),
209 "-%s%s%s,",
210 longopts[li].name,
211 (optarg)? "=" : "",
212 (optarg)? optarg : "");
213 break;
214 default:
215 errx(1, "internal error");
216 }
217 }
218 strcat(buf, arg);
219 li = -2;
220 }
221 len = strlen(buf);
222 if (len > 0) {
223 buf[len - 1] = '|';
224 buf[len] = '\0';
225 } else {
226 buf[0] = '|';
227 buf[1] = '\0';
228 }
229 snprintf(arg, sizeof(arg), "%d", nargs - optind);
230 strcat(buf, arg);
231 if (strcmp(buf, result) != 0)
232 errx(1, "`%s' != `%s'", buf, result);
233 } else
234 errx(1, "unknown directive at line %ld",
235 (unsigned long)lineno);
236 free(line);
237 }
238 return 0;
239 }
240