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/* string.c - various string-related functions that don't come with string.h */
#include <string.h>
#include <stdbool.h>
/* startswith() - Check if string starts with prefix.
*
* Args:
* string - String to check (haystack).
* prefix - Prefix to check (needle).
*
* Returns:
* true if 'string' starts with 'prefix', otherwise false.
*/
bool startswith(const char *string, const char *prefix) {
if ((string == NULL) || (prefix == NULL)) {
return false;
}
while (*prefix) {
if (*prefix++ != *string++) {
return false;
}
}
return true;
}
/* endswith() - Check if string ends with suffix.
*
* Args:
* string - String to check (haystack).
* suffix - Suffix to check (needle).
*
* Returns:
* true if 'string' ends with 'suffix', otherwise false.
*/
bool endswith(const char *string, const char *suffix) {
size_t string_length;
size_t suffix_length;
if ((string == NULL) || (suffix == NULL)) {
return false;
}
string_length = strlen(string);
suffix_length = strlen(suffix);
if (suffix_length > string_length) {
return false;
}
return (strncmp(string + string_length - suffix_length,
suffix,
suffix_length) == 0) ? true : false;
}
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