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57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
/*
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* Copyright 2024 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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///////////////////////////////////////
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// Implements:
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// size_t strcspn(const char *s1, const char *s2);
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// size_t strspn(const char *s1, const char *s2);
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#include <stddef.h>
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#include <string.h>
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size_t strcspn(const char *s1, const char *s2) {
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size_t len = 0;
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const char *p;
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while (s1[len]) {
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p = s2;
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while (*p) {
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if (s1[len] == *p++) {
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return len;
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}
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}
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len++;
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}
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return len;
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}
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size_t strspn(const char *s1, const char *s2) {
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size_t len = 0;
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const char *p;
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while (s1[len]) {
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p = s2;
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while (*p) {
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if (s1[len] == *p) {
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break;
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}
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p++;
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}
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if (!*p) {
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return len;
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}
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len++;
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}
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return len;
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}
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