mirror of
https://github.com/google/pebble.git
synced 2025-03-15 16:51:21 +00:00
45 lines
1.2 KiB
C
45 lines
1.2 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:
|
|
// char *strcat(char *s1, const char *s2);
|
|
// char *strncat(char *s1, const char *s2, size_t n);
|
|
///////////////////////////////////////
|
|
// Notes:
|
|
// Tuned for code size.
|
|
|
|
#include <string.h>
|
|
|
|
char *strcat(char * restrict s1, const char * restrict s2) {
|
|
char *rc = s1;
|
|
s1 += strlen(s1);
|
|
strcpy(s1, s2);
|
|
return rc;
|
|
}
|
|
|
|
char *strncat(char * restrict s1, const char * restrict s2, size_t n) {
|
|
char * rc = s1;
|
|
s1 += strlen(s1);
|
|
|
|
size_t strn = strlen(s2);
|
|
if (strn > n) {
|
|
strn = n;
|
|
}
|
|
memcpy(s1, s2, strn);
|
|
s1[strn] = '\0';
|
|
return rc;
|
|
}
|