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stringop.c: rewrite strip_whitespace

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This commit is contained in:
Ian Fan 2018-12-09 11:52:55 +00:00
parent 3b4cf3718b
commit 967566e37f
5 changed files with 17 additions and 27 deletions
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27
common/stringop.c
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@ -9,24 +9,17 @@
#include "string.h"
#include "list.h"
const char whitespace[] = " \f\n\r\t\v";
static const char whitespace[] = " \f\n\r\t\v";
char *strip_whitespace(char *_str) {
if (*_str == '\0')
return _str;
char *strold = _str;
while (*_str == ' ' || *_str == '\t') {
_str++;
}
char *str = strdup(_str);
free(strold);
int i;
for (i = 0; str[i] != '\0'; ++i);
do {
i--;
} while (i >= 0 && (str[i] == ' ' || str[i] == '\t'));
str[i + 1] = '\0';
return str;
void strip_whitespace(char *str) {
size_t len = strlen(str);
size_t start = strspn(str, whitespace);
memmove(str, &str[start], len + 1 - start);
if (!*str) return;
for (len -= start + 1; isspace(str[len]); --len) {}
str[len + 1] = '\0';
}
void strip_quotes(char *str) {