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util.c
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util.c
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/* Copyright 2015 Google Inc. All Rights Reserved.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "util.h"
#include <stdlib.h>
int parse_mem_arg(const char *str, size_t *result) {
size_t r;
char *p;
r = strtoull(str, &p, 0);
switch (*p) {
case 'k':
case 'K':
r *= 1024;
++p;
break;
case 'm':
case 'M':
r *= 1024 * 1024;
++p;
break;
case 'g':
case 'G':
r *= 1024 * 1024 * 1024;
++p;
break;
}
if (*p) {
return -1;
}
*result = r;
return 0;
}