/*
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include "args.h"
#include "vpx/vpx_integer.h"
#if defined(__GNUC__)
__attribute__((noreturn))
extern void die(
const char *fmt, ...);
#elif defined(_MSC_VER)
__declspec(noreturn)
extern void die(
const char *fmt, ...);
#else
extern void die(
const char *fmt, ...);
#endif
static struct arg arg_init(
char **argv) {
struct arg a;
a.argv = argv;
a.argv_step = 1;
a.name = NULL;
a.val = NULL;
a.def = NULL;
return a;
}
int arg_match(
struct arg *arg_,
const struct arg_def *def,
char **argv) {
struct arg arg;
if (!argv[0] || argv[0][0] !=
'-')
return 0;
arg = arg_init(argv);
if (def->short_name && strlen(arg.argv[0]) == strlen(def->short_name) + 1 &&
!strcmp(arg.argv[0] + 1, def->short_name)) {
arg.name = arg.argv[0] + 1;
arg.val = def->has_val ? arg.argv[1] : NULL;
arg.argv_step = def->has_val ? 2 : 1;
}
else if (def->long_name) {
const size_t name_len = strlen(def->long_name);
if (strlen(arg.argv[0]) >= name_len + 2 && arg.argv[0][1] ==
'-' &&
!strncmp(arg.argv[0] + 2, def->long_name, name_len) &&
(arg.argv[0][name_len + 2] ==
'=' ||
arg.argv[0][name_len + 2] ==
'\0')) {
arg.name = arg.argv[0] + 2;
arg.val = arg.name[name_len] ==
'=' ? arg.name + name_len + 1 : NULL;
arg.argv_step = 1;
}
}
if (arg.name && !arg.val && def->has_val)
die(
"Error: option %s requires argument.\n", arg.name);
if (arg.name && arg.val && !def->has_val)
die(
"Error: option %s requires no argument.\n", arg.name);
if (arg.name && (arg.val || !def->has_val)) {
arg.def = def;
*arg_ = arg;
return 1;
}
return 0;
}
const char *arg_next(
struct arg *arg) {
if (arg->argv[0]) arg->argv += arg->argv_step;
return *arg->argv;
}
char **argv_dup(
int argc,
const char **argv) {
char **new_argv = malloc((argc + 1) *
sizeof(*argv));
if (!new_argv)
return NULL;
memcpy(new_argv, argv, argc *
sizeof(*argv));
new_argv[argc] = NULL;
return new_argv;
}
void arg_show_usage(FILE *fp,
const struct arg_def *
const *defs) {
char option_text[40] = { 0 };
for (; *defs; defs++) {
const struct arg_def *def = *defs;
char *short_val = def->has_val ?
" " :
"";
char *long_val = def->has_val ?
"=" :
"";
if (def->short_name && def->long_name) {
char *comma = def->has_val ?
"," :
", ";
snprintf(option_text, 37,
"-%s%s%s --%s%6s", def->short_name, short_val,
comma, def->long_name, long_val);
}
else if (def->short_name)
snprintf(option_text, 37,
"-%s%s", def->short_name, short_val);
else if (def->long_name)
snprintf(option_text, 37,
" --%s%s", def->long_name, long_val);
fprintf(fp,
" %-37s\t%s\n", option_text, def->desc);
if (def->enums) {
const struct arg_enum_list *listptr;
fprintf(fp,
" %-37s\t ",
"");
for (listptr = def->enums; listptr->name; listptr++)
fprintf(fp,
"%s%s", listptr->name, listptr[1].name ?
", " :
"\n");
}
}
}
unsigned int arg_parse_uint(
const struct arg *arg) {
uint32_t rawval;
char *endptr;
rawval = (uint32_t)strtoul(arg->val, &endptr, 10);
if (arg->val[0] !=
'\0' && endptr[0] ==
'\0') {
if (rawval <= UINT_MAX)
return rawval;
die(
"Option %s: Value %ld out of range for unsigned int\n", arg->name,
rawval);
}
die(
"Option %s: Invalid character '%c'\n", arg->name, *endptr);
}
int arg_parse_int(
const struct arg *arg) {
int32_t rawval;
char *endptr;
rawval = (int32_t)strtol(arg->val, &endptr, 10);
if (arg->val[0] !=
'\0' && endptr[0] ==
'\0') {
if (rawval >= INT_MIN && rawval <= INT_MAX)
return (
int)rawval;
die(
"Option %s: Value %ld out of range for signed int\n", arg->name,
rawval);
}
die(
"Option %s: Invalid character '%c'\n", arg->name, *endptr);
}
struct vpx_rational {
int num;
/**< fraction numerator */
int den;
/**< fraction denominator */
};
struct vpx_rational arg_parse_rational(
const struct arg *arg) {
long int rawval;
char *endptr;
struct vpx_rational rat;
/* parse numerator */
rawval = strtol(arg->val, &endptr, 10);
if (arg->val[0] !=
'\0' && endptr[0] ==
'/') {
if (rawval >= INT_MIN && rawval <= INT_MAX)
rat.num = (
int)rawval;
else
die(
"Option %s: Value %ld out of range for signed int\n", arg->name,
rawval);
}
else
die(
"Option %s: Expected / at '%c'\n", arg->name, *endptr);
/* parse denominator */
rawval = strtol(endptr + 1, &endptr, 10);
if (arg->val[0] !=
'\0' && endptr[0] ==
'\0') {
if (rawval >= INT_MIN && rawval <= INT_MAX)
rat.den = (
int)rawval;
else
die(
"Option %s: Value %ld out of range for signed int\n", arg->name,
rawval);
}
else
die(
"Option %s: Invalid character '%c'\n", arg->name, *endptr);
return rat;
}
int arg_parse_enum(
const struct arg *arg) {
const struct arg_enum_list *listptr;
long int rawval;
char *endptr;
/* First see if the value can be parsed as a raw value */
rawval = strtol(arg->val, &endptr, 10);
if (arg->val[0] !=
'\0' && endptr[0] ==
'\0') {
/* Got a raw value, make sure it's valid */
for (listptr = arg->def->enums; listptr->name; listptr++)
if (listptr->val == rawval)
return (
int)rawval;
}
/* Next see if it can be parsed as a string */
for (listptr = arg->def->enums; listptr->name; listptr++)
if (!strcmp(arg->val, listptr->name))
return listptr->val;
die(
"Option %s: Invalid value '%s'\n", arg->name, arg->val);
}
int arg_parse_enum_or_int(
const struct arg *arg) {
if (arg->def->enums)
return arg_parse_enum(arg);
return arg_parse_int(arg);
}