2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
16 #include "vpx_ports/msvc.h"
18 #if defined(__GNUC__) && __GNUC__
19 extern void die(const char *fmt, ...) __attribute__((noreturn));
21 extern void die(const char *fmt, ...);
24 struct arg arg_init(char **argv) {
35 int arg_match(struct arg *arg_, const struct arg_def *def, char **argv) {
38 if (!argv[0] || argv[0][0] != '-') return 0;
42 if (def->short_name && strlen(arg.argv[0]) == strlen(def->short_name) + 1 &&
43 !strcmp(arg.argv[0] + 1, def->short_name)) {
44 arg.name = arg.argv[0] + 1;
45 arg.val = def->has_val ? arg.argv[1] : NULL;
46 arg.argv_step = def->has_val ? 2 : 1;
47 } else if (def->long_name) {
48 const size_t name_len = strlen(def->long_name);
50 if (strlen(arg.argv[0]) >= name_len + 2 && arg.argv[0][1] == '-' &&
51 !strncmp(arg.argv[0] + 2, def->long_name, name_len) &&
52 (arg.argv[0][name_len + 2] == '=' ||
53 arg.argv[0][name_len + 2] == '\0')) {
54 arg.name = arg.argv[0] + 2;
55 arg.val = arg.name[name_len] == '=' ? arg.name + name_len + 1 : NULL;
60 if (arg.name && !arg.val && def->has_val)
61 die("Error: option %s requires argument.\n", arg.name);
63 if (arg.name && arg.val && !def->has_val)
64 die("Error: option %s requires no argument.\n", arg.name);
66 if (arg.name && (arg.val || !def->has_val)) {
75 const char *arg_next(struct arg *arg) {
76 if (arg->argv[0]) arg->argv += arg->argv_step;
81 char **argv_dup(int argc, const char **argv) {
82 char **new_argv = malloc((argc + 1) * sizeof(*argv));
84 memcpy(new_argv, argv, argc * sizeof(*argv));
85 new_argv[argc] = NULL;
89 void arg_show_usage(FILE *fp, const struct arg_def *const *defs) {
90 char option_text[40] = { 0 };
92 for (; *defs; defs++) {
93 const struct arg_def *def = *defs;
94 char *short_val = def->has_val ? " <arg>" : "";
95 char *long_val = def->has_val ? "=<arg>" : "";
97 if (def->short_name && def->long_name) {
98 char *comma = def->has_val ? "," : ", ";
100 snprintf(option_text, 37, "-%s%s%s --%s%6s", def->short_name, short_val,
101 comma, def->long_name, long_val);
102 } else if (def->short_name)
103 snprintf(option_text, 37, "-%s%s", def->short_name, short_val);
104 else if (def->long_name)
105 snprintf(option_text, 37, " --%s%s", def->long_name, long_val);
107 fprintf(fp, " %-37s\t%s\n", option_text, def->desc);
110 const struct arg_enum_list *listptr;
112 fprintf(fp, " %-37s\t ", "");
114 for (listptr = def->enums; listptr->name; listptr++)
115 fprintf(fp, "%s%s", listptr->name, listptr[1].name ? ", " : "\n");
120 unsigned int arg_parse_uint(const struct arg *arg) {
124 rawval = strtol(arg->val, &endptr, 10);
126 if (arg->val[0] != '\0' && endptr[0] == '\0') {
127 if (rawval >= 0 && rawval <= UINT_MAX) return (unsigned int)rawval;
129 die("Option %s: Value %ld out of range for unsigned int\n", arg->name,
133 die("Option %s: Invalid character '%c'\n", arg->name, *endptr);
137 int arg_parse_int(const struct arg *arg) {
141 rawval = strtol(arg->val, &endptr, 10);
143 if (arg->val[0] != '\0' && endptr[0] == '\0') {
144 if (rawval >= INT_MIN && rawval <= INT_MAX) return (int)rawval;
146 die("Option %s: Value %ld out of range for signed int\n", arg->name,
150 die("Option %s: Invalid character '%c'\n", arg->name, *endptr);
154 struct vpx_rational {
155 int num; /**< fraction numerator */
156 int den; /**< fraction denominator */
158 struct vpx_rational arg_parse_rational(const struct arg *arg) {
161 struct vpx_rational rat;
163 /* parse numerator */
164 rawval = strtol(arg->val, &endptr, 10);
166 if (arg->val[0] != '\0' && endptr[0] == '/') {
167 if (rawval >= INT_MIN && rawval <= INT_MAX)
168 rat.num = (int)rawval;
170 die("Option %s: Value %ld out of range for signed int\n", arg->name,
173 die("Option %s: Expected / at '%c'\n", arg->name, *endptr);
175 /* parse denominator */
176 rawval = strtol(endptr + 1, &endptr, 10);
178 if (arg->val[0] != '\0' && endptr[0] == '\0') {
179 if (rawval >= INT_MIN && rawval <= INT_MAX)
180 rat.den = (int)rawval;
182 die("Option %s: Value %ld out of range for signed int\n", arg->name,
185 die("Option %s: Invalid character '%c'\n", arg->name, *endptr);
190 int arg_parse_enum(const struct arg *arg) {
191 const struct arg_enum_list *listptr;
195 /* First see if the value can be parsed as a raw value */
196 rawval = strtol(arg->val, &endptr, 10);
197 if (arg->val[0] != '\0' && endptr[0] == '\0') {
198 /* Got a raw value, make sure it's valid */
199 for (listptr = arg->def->enums; listptr->name; listptr++)
200 if (listptr->val == rawval) return (int)rawval;
203 /* Next see if it can be parsed as a string */
204 for (listptr = arg->def->enums; listptr->name; listptr++)
205 if (!strcmp(arg->val, listptr->name)) return listptr->val;
207 die("Option %s: Invalid value '%s'\n", arg->name, arg->val);
211 int arg_parse_enum_or_int(const struct arg *arg) {
212 if (arg->def->enums) return arg_parse_enum(arg);
213 return arg_parse_int(arg);