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"
19 #if defined(__GNUC__) && __GNUC__
20 extern void die(const char *fmt, ...) __attribute__((noreturn));
22 extern void die(const char *fmt, ...);
25 struct arg arg_init(char **argv) {
36 int arg_match(struct arg *arg_, const struct arg_def *def, char **argv) {
39 if (!argv[0] || argv[0][0] != '-') return 0;
43 if (def->short_name && strlen(arg.argv[0]) == strlen(def->short_name) + 1 &&
44 !strcmp(arg.argv[0] + 1, def->short_name)) {
45 arg.name = arg.argv[0] + 1;
46 arg.val = def->has_val ? arg.argv[1] : NULL;
47 arg.argv_step = def->has_val ? 2 : 1;
48 } else if (def->long_name) {
49 const size_t name_len = strlen(def->long_name);
51 if (strlen(arg.argv[0]) >= name_len + 2 && arg.argv[0][1] == '-' &&
52 !strncmp(arg.argv[0] + 2, def->long_name, name_len) &&
53 (arg.argv[0][name_len + 2] == '=' ||
54 arg.argv[0][name_len + 2] == '\0')) {
55 arg.name = arg.argv[0] + 2;
56 arg.val = arg.name[name_len] == '=' ? arg.name + name_len + 1 : NULL;
61 if (arg.name && !arg.val && def->has_val)
62 die("Error: option %s requires argument.\n", arg.name);
64 if (arg.name && arg.val && !def->has_val)
65 die("Error: option %s requires no argument.\n", arg.name);
67 if (arg.name && (arg.val || !def->has_val)) {
76 const char *arg_next(struct arg *arg) {
77 if (arg->argv[0]) arg->argv += arg->argv_step;
82 char **argv_dup(int argc, const char **argv) {
83 char **new_argv = malloc((argc + 1) * sizeof(*argv));
85 memcpy(new_argv, argv, argc * sizeof(*argv));
86 new_argv[argc] = NULL;
90 void arg_show_usage(FILE *fp, const struct arg_def *const *defs) {
91 char option_text[40] = { 0 };
93 for (; *defs; defs++) {
94 const struct arg_def *def = *defs;
95 char *short_val = def->has_val ? " <arg>" : "";
96 char *long_val = def->has_val ? "=<arg>" : "";
98 if (def->short_name && def->long_name) {
99 char *comma = def->has_val ? "," : ", ";
101 snprintf(option_text, 37, "-%s%s%s --%s%6s", def->short_name, short_val,
102 comma, def->long_name, long_val);
103 } else if (def->short_name)
104 snprintf(option_text, 37, "-%s%s", def->short_name, short_val);
105 else if (def->long_name)
106 snprintf(option_text, 37, " --%s%s", def->long_name, long_val);
108 fprintf(fp, " %-37s\t%s\n", option_text, def->desc);
111 const struct arg_enum_list *listptr;
113 fprintf(fp, " %-37s\t ", "");
115 for (listptr = def->enums; listptr->name; listptr++)
116 fprintf(fp, "%s%s", listptr->name, listptr[1].name ? ", " : "\n");
121 unsigned int arg_parse_uint(const struct arg *arg) {
125 rawval = (uint32_t)strtoul(arg->val, &endptr, 10);
127 if (arg->val[0] != '\0' && endptr[0] == '\0') {
128 if (rawval <= UINT_MAX) return rawval;
130 die("Option %s: Value %ld out of range for unsigned int\n", arg->name,
134 die("Option %s: Invalid character '%c'\n", arg->name, *endptr);
138 int arg_parse_int(const struct arg *arg) {
142 rawval = (int32_t)strtol(arg->val, &endptr, 10);
144 if (arg->val[0] != '\0' && endptr[0] == '\0') {
145 if (rawval >= INT_MIN && rawval <= INT_MAX) return (int)rawval;
147 die("Option %s: Value %ld out of range for signed int\n", arg->name,
151 die("Option %s: Invalid character '%c'\n", arg->name, *endptr);
155 struct vpx_rational {
156 int num; /**< fraction numerator */
157 int den; /**< fraction denominator */
159 struct vpx_rational arg_parse_rational(const struct arg *arg) {
162 struct vpx_rational rat;
164 /* parse numerator */
165 rawval = strtol(arg->val, &endptr, 10);
167 if (arg->val[0] != '\0' && endptr[0] == '/') {
168 if (rawval >= INT_MIN && rawval <= INT_MAX)
169 rat.num = (int)rawval;
171 die("Option %s: Value %ld out of range for signed int\n", arg->name,
174 die("Option %s: Expected / at '%c'\n", arg->name, *endptr);
176 /* parse denominator */
177 rawval = strtol(endptr + 1, &endptr, 10);
179 if (arg->val[0] != '\0' && endptr[0] == '\0') {
180 if (rawval >= INT_MIN && rawval <= INT_MAX)
181 rat.den = (int)rawval;
183 die("Option %s: Value %ld out of range for signed int\n", arg->name,
186 die("Option %s: Invalid character '%c'\n", arg->name, *endptr);
191 int arg_parse_enum(const struct arg *arg) {
192 const struct arg_enum_list *listptr;
196 /* First see if the value can be parsed as a raw value */
197 rawval = strtol(arg->val, &endptr, 10);
198 if (arg->val[0] != '\0' && endptr[0] == '\0') {
199 /* Got a raw value, make sure it's valid */
200 for (listptr = arg->def->enums; listptr->name; listptr++)
201 if (listptr->val == rawval) return (int)rawval;
204 /* Next see if it can be parsed as a string */
205 for (listptr = arg->def->enums; listptr->name; listptr++)
206 if (!strcmp(arg->val, listptr->name)) return listptr->val;
208 die("Option %s: Invalid value '%s'\n", arg->name, arg->val);
212 int arg_parse_enum_or_int(const struct arg *arg) {
213 if (arg->def->enums) return arg_parse_enum(arg);
214 return arg_parse_int(arg);