| /* |
| * 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; |
| } |