42 lines
849 B
C
42 lines
849 B
C
/* $NetBSD: zopen.c,v 1.2 2005/06/27 01:00:06 christos Exp $ */
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/*
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* Public domain stdio wrapper for libz, written by Johan Danielsson.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: zopen.c,v 1.2 2005/06/27 01:00:06 christos Exp $");
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#endif
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#include <stdio.h>
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#include <zlib.h>
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FILE *zopen(const char *fname, const char *mode);
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/* convert arguments */
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static int
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xgzread(void *cookie, char *data, int size)
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{
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return gzread(cookie, data, size);
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}
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static int
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xgzwrite(void *cookie, const char *data, int size)
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{
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return gzwrite(cookie, __UNCONST(data), size);
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}
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FILE *
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zopen(const char *fname, const char *mode)
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{
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gzFile gz = gzopen(fname, mode);
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if(gz == NULL)
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return NULL;
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if(*mode == 'r')
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return (funopen(gz, xgzread, NULL, NULL, gzclose));
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else
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return (funopen(gz, NULL, xgzwrite, NULL, gzclose));
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}
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