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/vpx_integer.h"
17 #include "vpx_ports/msvc.h"
20 __attribute__((noreturn)) extern void die(const char *fmt, ...);
21 #elif defined(_MSC_VER)
22 __declspec(noreturn) extern void die(const char *fmt, ...);
24 extern void die(const char *fmt, ...);
27 struct arg arg_init(char **argv) {
38 int arg_match(struct arg *arg_, const struct arg_def *def, char **argv) {
41 if (!argv[0] || argv[0][0] != '-') return 0;
45 if (def->short_name && strlen(arg.argv[0]) == strlen(def->short_name) + 1 &&
46 !strcmp(arg.argv[0] + 1, def->short_name)) {
47 arg.name = arg.argv[0] + 1;
48 arg.val = def->has_val ? arg.argv[1] : NULL;
49 arg.argv_step = def->has_val ? 2 : 1;
50 } else if (def->long_name) {
51 const size_t name_len = strlen(def->long_name);
53 if (strlen(arg.argv[0]) >= name_len + 2 && arg.argv[0][1] == '-' &&
54 !strncmp(arg.argv[0] + 2, def->long_name, name_len) &&
55 (arg.argv[0][name_len + 2] == '=' ||
56 arg.argv[0][name_len + 2] == '\0')) {
57 arg.name = arg.argv[0] + 2;
58 arg.val = arg.name[name_len] == '=' ? arg.name + name_len + 1 : NULL;
63 if (arg.name && !arg.val && def->has_val)
64 die("Error: option %s requires argument.\n", arg.name);
66 if (arg.name && arg.val && !def->has_val)
67 die("Error: option %s requires no argument.\n", arg.name);
69 if (arg.name && (arg.val || !def->has_val)) {
78 const char *arg_next(struct arg *arg) {
79 if (arg->argv[0]) arg->argv += arg->argv_step;
84 char **argv_dup(int argc, const char **argv) {
85 char **new_argv = malloc((argc + 1) * sizeof(*argv));
87 memcpy(new_argv, argv, argc * sizeof(*argv));
88 new_argv[argc] = NULL;
92 void arg_show_usage(FILE *fp, const struct arg_def *const *defs) {
93 char option_text[40] = { 0 };
95 for (; *defs; defs++) {
96 const struct arg_def *def = *defs;
97 char *short_val = def->has_val ? " <arg>" : "";
98 char *long_val = def->has_val ? "=<arg>" : "";
100 if (def->short_name && def->long_name) {
101 char *comma = def->has_val ? "," : ", ";
103 snprintf(option_text, 37, "-%s%s%s --%s%6s", def->short_name, short_val,
104 comma, def->long_name, long_val);
105 } else if (def->short_name)
106 snprintf(option_text, 37, "-%s%s", def->short_name, short_val);
107 else if (def->long_name)
108 snprintf(option_text, 37, " --%s%s", def->long_name, long_val);
110 fprintf(fp, " %-37s\t%s\n", option_text, def->desc);
113 const struct arg_enum_list *listptr;
115 fprintf(fp, " %-37s\t ", "");
117 for (listptr = def->enums; listptr->name; listptr++)
118 fprintf(fp, "%s%s", listptr->name, listptr[1].name ? ", " : "\n");
123 unsigned int arg_parse_uint(const struct arg *arg) {
127 rawval = (uint32_t)strtoul(arg->val, &endptr, 10);
129 if (arg->val[0] != '\0' && endptr[0] == '\0') {
130 if (rawval <= UINT_MAX) return rawval;
132 die("Option %s: Value %ld out of range for unsigned int\n", arg->name,
136 die("Option %s: Invalid character '%c'\n", arg->name, *endptr);
140 int arg_parse_int(const struct arg *arg) {
144 rawval = (int32_t)strtol(arg->val, &endptr, 10);
146 if (arg->val[0] != '\0' && endptr[0] == '\0') {
147 if (rawval >= INT_MIN && rawval <= INT_MAX) return (int)rawval;
149 die("Option %s: Value %ld out of range for signed int\n", arg->name,
153 die("Option %s: Invalid character '%c'\n", arg->name, *endptr);
157 struct vpx_rational {
158 int num; /**< fraction numerator */
159 int den; /**< fraction denominator */
161 struct vpx_rational arg_parse_rational(const struct arg *arg) {
164 struct vpx_rational rat;
166 /* parse numerator */
167 rawval = strtol(arg->val, &endptr, 10);
169 if (arg->val[0] != '\0' && endptr[0] == '/') {
170 if (rawval >= INT_MIN && rawval <= INT_MAX)
171 rat.num = (int)rawval;
173 die("Option %s: Value %ld out of range for signed int\n", arg->name,
176 die("Option %s: Expected / at '%c'\n", arg->name, *endptr);
178 /* parse denominator */
179 rawval = strtol(endptr + 1, &endptr, 10);
181 if (arg->val[0] != '\0' && endptr[0] == '\0') {
182 if (rawval >= INT_MIN && rawval <= INT_MAX)
183 rat.den = (int)rawval;
185 die("Option %s: Value %ld out of range for signed int\n", arg->name,
188 die("Option %s: Invalid character '%c'\n", arg->name, *endptr);
193 int arg_parse_enum(const struct arg *arg) {
194 const struct arg_enum_list *listptr;
198 /* First see if the value can be parsed as a raw value */
199 rawval = strtol(arg->val, &endptr, 10);
200 if (arg->val[0] != '\0' && endptr[0] == '\0') {
201 /* Got a raw value, make sure it's valid */
202 for (listptr = arg->def->enums; listptr->name; listptr++)
203 if (listptr->val == rawval) return (int)rawval;
206 /* Next see if it can be parsed as a string */
207 for (listptr = arg->def->enums; listptr->name; listptr++)
208 if (!strcmp(arg->val, listptr->name)) return listptr->val;
210 die("Option %s: Invalid value '%s'\n", arg->name, arg->val);
214 int arg_parse_enum_or_int(const struct arg *arg) {
215 if (arg->def->enums) return arg_parse_enum(arg);
216 return arg_parse_int(arg);