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/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/common/byte_buf.h>
#include <aws/common/command_line_parser.h>
#include <ctype.h>
int aws_cli_optind = 1;
int aws_cli_opterr = -1;
int aws_cli_optopt = 0;
bool aws_cli_on_arg = false;
const char *aws_cli_optarg = NULL;
const char *aws_cli_positional_arg = NULL;
static const struct aws_cli_option *s_find_option_from_char(
const struct aws_cli_option *longopts,
char search_for,
int *longindex) {
int index = 0;
const struct aws_cli_option *option = &longopts[index];
while (option->val != 0 || option->name) {
if (option->val == search_for) {
if (longindex) {
*longindex = index;
}
return option;
}
option = &longopts[++index];
}
return NULL;
}
AWS_COMMON_API void aws_cli_reset_state(void) {
aws_cli_optind = 1;
aws_cli_opterr = -1;
aws_cli_optopt = 0;
aws_cli_on_arg = false;
aws_cli_optarg = NULL;
aws_cli_positional_arg = NULL;
}
static const struct aws_cli_option *s_find_option_from_c_str(
const struct aws_cli_option *longopts,
const char *search_for,
int *longindex) {
int index = 0;
const struct aws_cli_option *option = &longopts[index];
while (option->name || option->val != 0) {
if (option->name) {
if (option->name && !strcmp(search_for, option->name)) {
if (longindex) {
*longindex = index;
}
return option;
}
}
option = &longopts[++index];
}
return NULL;
}
int aws_cli_getopt_long(
int argc,
char *const argv[],
const char *optstring,
const struct aws_cli_option *longopts,
int *longindex) {
aws_cli_optarg = NULL;
if (aws_cli_optind >= argc) {
return -1;
}
char first_char = argv[aws_cli_optind][0];
char second_char = argv[aws_cli_optind][1];
char *option_start = NULL;
const struct aws_cli_option *option = NULL;
bool positional_arg_encountered = false;
if (first_char == '-' && second_char != '-') {
aws_cli_on_arg = true;
positional_arg_encountered = false;
option_start = &argv[aws_cli_optind][1];
option = s_find_option_from_char(longopts, *option_start, longindex);
} else if (first_char == '-' && second_char == '-') {
aws_cli_on_arg = true;
positional_arg_encountered = false;
option_start = &argv[aws_cli_optind][2];
option = s_find_option_from_c_str(longopts, option_start, longindex);
} else {
if (!aws_cli_on_arg) {
aws_cli_positional_arg = argv[aws_cli_optind];
positional_arg_encountered = true;
} else {
aws_cli_on_arg = false;
aws_cli_positional_arg = NULL;
}
}
aws_cli_optind++;
if (option) {
bool has_arg = false;
aws_cli_on_arg = false;
aws_cli_positional_arg = NULL;
char *opt_value = memchr(optstring, option->val, strlen(optstring) + 1);
if (!opt_value) {
return '?';
}
if (opt_value[1] == ':') {
has_arg = true;
}
if (has_arg) {
if (aws_cli_optind >= argc) {
return '?';
}
aws_cli_optarg = argv[aws_cli_optind++];
}
return option->val;
}
/* start of text to indicate we just have a text argument. */
return positional_arg_encountered ? 0x02 : '?';
}
int aws_cli_dispatch_on_subcommand(
int argc,
char *const argv[],
struct aws_cli_subcommand_dispatch *dispatch_table,
int table_length,
void *user_data) {
if (argc >= 2) {
struct aws_byte_cursor arg_name = aws_byte_cursor_from_c_str(argv[1]);
for (int i = 0; i < table_length; ++i) {
struct aws_byte_cursor cmd_name = aws_byte_cursor_from_c_str(dispatch_table[i].command_name);
if (aws_byte_cursor_eq_ignore_case(&arg_name, &cmd_name)) {
return dispatch_table[i].subcommand_fn(argc - 1, &argv[1], (const char *)arg_name.ptr, user_data);
}
}
return aws_raise_error(AWS_ERROR_UNIMPLEMENTED);
}
return aws_raise_error(AWS_ERROR_INVALID_ARGUMENT);
}
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