51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
#include <lib.h>
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#include <string.h>
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/* lsearch(3) and lfind(3)
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*
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* Author: Terrence W. Holm Sep. 1988
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*/
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#include <stddef.h>
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_PROTOTYPE( char *lsearch, (char *key, char *base,
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unsigned *count, unsigned width,
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int (*keycmp)(const void *, const void *)));
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_PROTOTYPE( char *lfind, (char *key, char *base,
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unsigned *count, unsigned width,
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int (*keycmp)(const void *, const void *)));
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char *lsearch(key, base, count, width, keycmp)
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char *key;
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char *base;
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unsigned *count;
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unsigned width;
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_PROTOTYPE( int (*keycmp), (const void *, const void *));
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{
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char *entry;
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char *last = base + *count * width;
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for (entry = base; entry < last; entry += width)
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if (keycmp(key, entry) == 0) return(entry);
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bcopy(key, last, width);
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*count += 1;
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return(last);
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}
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char *lfind(key, base, count, width, keycmp)
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char *key;
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char *base;
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unsigned *count;
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unsigned width;
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_PROTOTYPE( int (*keycmp), (const void *, const void *));
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{
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char *entry;
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char *last = base + *count * width;
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for (entry = base; entry < last; entry += width)
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if (keycmp(key, entry) == 0) return(entry);
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return((char *)NULL);
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}
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