pebble/platform/tintin/boot/libc/string/strspn.c
2025-01-27 11:38:16 -08:00

57 lines
1.3 KiB
C

/*
* Copyright 2024 Google LLC
*
* 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.
*/
///////////////////////////////////////
// Implements:
// size_t strcspn(const char *s1, const char *s2);
// size_t strspn(const char *s1, const char *s2);
#include <stddef.h>
#include <string.h>
size_t strcspn(const char *s1, const char *s2) {
size_t len = 0;
const char *p;
while (s1[len]) {
p = s2;
while (*p) {
if (s1[len] == *p++) {
return len;
}
}
len++;
}
return len;
}
size_t strspn(const char *s1, const char *s2) {
size_t len = 0;
const char *p;
while (s1[len]) {
p = s2;
while (*p) {
if (s1[len] == *p) {
break;
}
p++;
}
if (!*p) {
return len;
}
len++;
}
return len;
}