/* * 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 *strstr(const char *s1, const char *s2); /////////////////////////////////////// // Notes: // Tuned for code size. #include #include char *strstr(const char *s1, const char *s2) { size_t len = strlen(s2); while (*s1) { if (strncmp(s1, s2, len) == 0) { return (char*)s1; } s1++; } return NULL; }