3396088666
We want our delimiters to also contain 0 characters and have them handled gracefully. To accomplish this, I wrote a function strmem(), which looks for a certain, arbitrarily long memory subset in a given string. memmem() is a GNU extension and forces you to call strlen every time.
24 lines
417 B
C
24 lines
417 B
C
/* See LICENSE file for copyright and license details. */
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#include <stddef.h>
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#include <string.h>
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char *
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strmem(char *haystack, char *needle, size_t needlelen)
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{
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size_t i;
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for (i = 0; i < needlelen; i++) {
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if (haystack[i] == '\0') {
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return NULL;
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}
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}
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for (; haystack[i]; i++) {
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if (!(memcmp(haystack + i - needlelen, needle, needlelen))) {
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return (haystack + i - needlelen);
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}
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}
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return NULL;
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}
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