diff options
Diffstat (limited to 'lib')
-rw-r--r-- | lib/libcompat/4.3/regex.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/lib/libcompat/4.3/regex.c b/lib/libcompat/4.3/regex.c new file mode 100644 index 0000000..f89c32c --- /dev/null +++ b/lib/libcompat/4.3/regex.c @@ -0,0 +1,92 @@ +/*- + * Copyright (c) 1992 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * James da Silva at the University of Maryland at College Park. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Compatibility routines that implement the old re_comp/re_exec interface in + * terms of the regcomp/regexec interface. It's possible that some programs + * rely on dark corners of re_comp/re_exec and won't work with this version, + * but most programs should be fine. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)regex.c 5.1 (Berkeley) 3/29/92"; +#endif /* LIBC_SCCS and not lint */ + +#include <sys/types.h> +#include <stddef.h> +#include <regexp.h> +#include <string.h> +#include <stdlib.h> + +static regexp *re_regexp; +static int re_goterr; +static char *re_errstr; + +char * +re_comp(s) + char *s; +{ + if (s == NULL) + return (NULL); + if (re_regexp) + free(re_regexp); + if (re_errstr) + free(re_errstr); + re_goterr = 0; + re_regexp = regcomp(s); + return (re_goterr ? re_errstr : NULL); +} + +int +re_exec(s) + char *s; +{ + int rc; + + re_goterr = 0; + rc = regexec(re_regexp, s); + return (re_goterr ? -1 : rc); +} + +void +regerror(s) + const char *s; +{ + re_goterr = 1; + if (re_errstr) + free(re_errstr); + re_errstr = strdup(s); +} |