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/*
* Copyright © 2012 Kristian Høgsberg
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "config.h"
#include <stdbool.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
#include <libweston/config-parser.h>
#include "string-helpers.h"
static bool
handle_option(const struct weston_option *option, char *value)
{
char* p;
switch (option->type) {
case WESTON_OPTION_INTEGER:
if (!safe_strtoint(value, option->data))
return false;
return true;
case WESTON_OPTION_UNSIGNED_INTEGER:
errno = 0;
* (uint32_t *) option->data = strtoul(value, &p, 10);
if (errno != 0 || p == value || *p != '\0')
return false;
return true;
case WESTON_OPTION_STRING:
* (char **) option->data = strdup(value);
return true;
default:
assert(0);
return false;
}
}
static bool
long_option(const struct weston_option *options, int count, char *arg)
{
int k, len;
for (k = 0; k < count; k++) {
if (!options[k].name)
continue;
len = strlen(options[k].name);
if (strncmp(options[k].name, arg + 2, len) != 0)
continue;
if (options[k].type == WESTON_OPTION_BOOLEAN) {
if (!arg[len + 2]) {
* (bool *) options[k].data = true;
return true;
}
} else if (arg[len+2] == '=') {
return handle_option(options + k, arg + len + 3);
}
}
return false;
}
static bool
long_option_with_arg(const struct weston_option *options, int count, char *arg,
char *param)
{
int k, len;
for (k = 0; k < count; k++) {
if (!options[k].name)
continue;
len = strlen(options[k].name);
if (strncmp(options[k].name, arg + 2, len) != 0)
continue;
/* Since long_option() should handle all booleans, we should
* never reach this
*/
assert(options[k].type != WESTON_OPTION_BOOLEAN);
return handle_option(options + k, param);
}
return false;
}
static bool
short_option(const struct weston_option *options, int count, char *arg)
{
int k;
if (!arg[1])
return false;
for (k = 0; k < count; k++) {
if (options[k].short_name != arg[1])
continue;
if (options[k].type == WESTON_OPTION_BOOLEAN) {
if (!arg[2]) {
* (bool *) options[k].data = true;
return true;
}
} else if (arg[2]) {
return handle_option(options + k, arg + 2);
} else {
return false;
}
}
return false;
}
static bool
short_option_with_arg(const struct weston_option *options, int count, char *arg, char *param)
{
int k;
if (!arg[1])
return false;
for (k = 0; k < count; k++) {
if (options[k].short_name != arg[1])
continue;
if (options[k].type == WESTON_OPTION_BOOLEAN)
continue;
return handle_option(options + k, param);
}
return false;
}
int
parse_options(const struct weston_option *options,
int count, int *argc, char *argv[])
{
int i, j;
int ignore_options = 0;
for (i = 1, j = 1; i < *argc; i++) {
if (argv[i][0] == '-' && ignore_options == 0) {
if (argv[i][1] == '-') {
if (strlen(argv[i]) == 2) {
/* '--' to ignore the remaining options */
i--; /* reinsert the '--' entry */
ignore_options = 1;
continue;
}
/* Long option, e.g. --foo or --foo=bar */
if (long_option(options, count, argv[i]))
continue;
/* ...also handle --foo bar */
if (i + 1 < *argc &&
long_option_with_arg(options, count,
argv[i], argv[i+1])) {
i++;
continue;
}
} else {
/* Short option, e.g -f or -f42 */
if (short_option(options, count, argv[i]))
continue;
/* ...also handle -f 42 */
if (i+1 < *argc &&
short_option_with_arg(options, count, argv[i], argv[i+1])) {
i++;
continue;
}
}
}
argv[j++] = argv[i];
}
argv[j] = NULL;
*argc = j;
return j;
}
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