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Annotation of coherent/b/lib/libc/string/strstr.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * strstr.c
        !             3:  * ANSI 4.11.5.7.
        !             4:  * Search string for string.
        !             5:  */
        !             6: 
        !             7: #include <string.h>
        !             8: 
        !             9: char *strstr(s1, s2) char *s1; char *s2;
        !            10: {
        !            11:        register char *cp1, *cp2;
        !            12:        register char c2;
        !            13: 
        !            14:        if (*s2 == '\0')
        !            15:                return(s1);
        !            16:        for ( ; *s1; s1++) {
        !            17:                cp1 = s1;
        !            18:                cp2 = s2;
        !            19:                while ((c2 = *cp2++) && *cp1++ == c2)
        !            20:                        ;
        !            21:                if (c2 == '\0')
        !            22:                        return(s1);             /* match */
        !            23:                else if (*--cp1 == '\0')
        !            24:                        return(NULL);           /* end of s1, failed */
        !            25:        }
        !            26:        return (NULL);                          /* failed */
        !            27: }

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