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/*
* Copyright (c) 2020, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include "common/args_helper.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#define SET_ERR_STRING(...) \
if (err_msg) snprintf(err_msg, ARG_ERR_MSG_MAX_LEN, __VA_ARGS__)
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_helper(struct arg *arg_, const struct arg_def *def, char **argv,
char *err_msg) {
struct arg arg;
if (err_msg) err_msg[0] = '\0';
assert(def->has_val == 0 || def->has_val == 1 || def->has_val == -1);
if (!argv[0] || argv[0][0] != '-') return 0;
arg = arg_init(argv);
if (def->short_name && !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 (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) {
if (def->has_val == -1) {
arg.def = def;
*arg_ = arg;
return 1;
}
if (!arg.val && def->has_val) {
SET_ERR_STRING("Error: option %s requires argument.\n", arg.name);
return 0;
}
if (arg.val && !def->has_val) {
SET_ERR_STRING("Error: option %s requires no argument.\n", arg.name);
return 0;
}
arg.def = def;
*arg_ = arg;
return 1;
}
return 0;
}
unsigned int arg_parse_uint_helper(const struct arg *arg, char *err_msg) {
char *endptr;
const unsigned long rawval = strtoul(arg->val, &endptr, 10); // NOLINT
if (err_msg) err_msg[0] = '\0';
if (arg->val[0] != '\0' && endptr[0] == '\0') {
if (rawval <= UINT_MAX) return (unsigned int)rawval;
SET_ERR_STRING("Option %s: Value %lu out of range for unsigned int\n",
arg->name, rawval);
return 0;
}
SET_ERR_STRING("Option %s: Invalid character '%c'\n", arg->name, *endptr);
return 0;
}
int arg_parse_int_helper(const struct arg *arg, char *err_msg) {
char *endptr;
const long rawval = strtol(arg->val, &endptr, 10); // NOLINT
if (err_msg) err_msg[0] = '\0';
if (arg->val[0] != '\0' && endptr[0] == '\0') {
if (rawval >= INT_MIN && rawval <= INT_MAX) return (int)rawval;
SET_ERR_STRING("Option %s: Value %ld out of range for signed int\n",
arg->name, rawval);
return 0;
}
SET_ERR_STRING("Option %s: Invalid character '%c'\n", arg->name, *endptr);
return 0;
}
struct aom_rational arg_parse_rational_helper(const struct arg *arg,
char *err_msg) {
long rawval; // NOLINT
char *endptr;
struct aom_rational rat = { 0, 1 };
if (err_msg) err_msg[0] = '\0';
/* 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 {
SET_ERR_STRING("Option %s: Value %ld out of range for signed int\n",
arg->name, rawval);
return rat;
}
} else {
SET_ERR_STRING("Option %s: Expected / at '%c'\n", arg->name, *endptr);
return rat;
}
/* 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 {
SET_ERR_STRING("Option %s: Value %ld out of range for signed int\n",
arg->name, rawval);
return rat;
}
} else {
SET_ERR_STRING("Option %s: Invalid character '%c'\n", arg->name, *endptr);
return rat;
}
return rat;
}
int arg_parse_enum_helper(const struct arg *arg, char *err_msg) {
const struct arg_enum_list *listptr;
long rawval; // NOLINT
char *endptr;
if (err_msg) err_msg[0] = '\0';
/* 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;
SET_ERR_STRING("Option %s: Invalid value '%s'\n", arg->name, arg->val);
return 0;
}
int arg_parse_enum_or_int_helper(const struct arg *arg, char *err_msg) {
if (arg->def->enums) return arg_parse_enum_helper(arg, err_msg);
return arg_parse_int_helper(arg, err_msg);
}
// parse a comma separated list of at most n integers
// return the number of elements in the list
int arg_parse_list_helper(const struct arg *arg, int *list, int n,
char *err_msg) {
const char *ptr = arg->val;
char *endptr;
int i = 0;
if (err_msg) err_msg[0] = '\0';
while (ptr[0] != '\0') {
long rawval = strtol(ptr, &endptr, 10); // NOLINT
if (rawval < INT_MIN || rawval > INT_MAX) {
SET_ERR_STRING("Option %s: Value %ld out of range for signed int\n",
arg->name, rawval);
return 0;
} else if (i >= n) {
SET_ERR_STRING("Option %s: List has more than %d entries\n", arg->name,
n);
return 0;
} else if (*endptr == ',') {
endptr++;
} else if (*endptr != '\0') {
SET_ERR_STRING("Option %s: Bad list separator '%c'\n", arg->name,
*endptr);
return 0;
}
list[i++] = (int)rawval;
ptr = endptr;
}
return i;
}
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