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Annotation of src/usr.bin/sed/misc.c, Revision 1.5

1.5     ! millert     1: /*     $OpenBSD: misc.c,v 1.4 2002/02/19 19:39:39 millert Exp $        */
1.2       deraadt     2:
1.1       deraadt     3: /*-
                      4:  * Copyright (c) 1992 Diomidis Spinellis.
                      5:  * Copyright (c) 1992, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * This code is derived from software contributed to Berkeley by
                      9:  * Diomidis Spinellis of Imperial College, University of London.
                     10:  *
                     11:  * Redistribution and use in source and binary forms, with or without
                     12:  * modification, are permitted provided that the following conditions
                     13:  * are met:
                     14:  * 1. Redistributions of source code must retain the above copyright
                     15:  *    notice, this list of conditions and the following disclaimer.
                     16:  * 2. Redistributions in binary form must reproduce the above copyright
                     17:  *    notice, this list of conditions and the following disclaimer in the
                     18:  *    documentation and/or other materials provided with the distribution.
1.5     ! millert    19:  * 3. Neither the name of the University nor the names of its contributors
1.1       deraadt    20:  *    may be used to endorse or promote products derived from this software
                     21:  *    without specific prior written permission.
                     22:  *
                     23:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     24:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     25:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     26:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     27:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     28:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     29:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     31:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     32:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     33:  * SUCH DAMAGE.
                     34:  */
                     35:
                     36: #ifndef lint
                     37: /* from: static char sccsid[] = "@(#)misc.c    8.1 (Berkeley) 6/6/93"; */
1.5     ! millert    38: static char *rcsid = "$OpenBSD: misc.c,v 1.4 2002/02/19 19:39:39 millert Exp $";
1.1       deraadt    39: #endif /* not lint */
                     40:
                     41: #include <sys/types.h>
                     42:
                     43: #include <errno.h>
                     44: #include <regex.h>
                     45: #include <stdio.h>
                     46: #include <stdlib.h>
                     47: #include <string.h>
1.4       millert    48: #include <stdarg.h>
1.1       deraadt    49:
                     50: #include "defs.h"
                     51: #include "extern.h"
                     52:
                     53: /*
                     54:  * malloc with result test
                     55:  */
                     56: void *
                     57: xmalloc(size)
                     58:        u_int size;
                     59: {
                     60:        void *p;
                     61:
                     62:        if ((p = malloc(size)) == NULL)
                     63:                err(FATAL, "%s", strerror(errno));
                     64:        return (p);
                     65: }
                     66:
                     67: /*
                     68:  * realloc with result test
                     69:  */
                     70: void *
                     71: xrealloc(p, size)
                     72:        void *p;
                     73:        u_int size;
                     74: {
                     75:        if (p == NULL)                  /* Compatibility hack. */
                     76:                return (xmalloc(size));
                     77:
                     78:        if ((p = realloc(p, size)) == NULL)
                     79:                err(FATAL, "%s", strerror(errno));
                     80:        return (p);
                     81: }
                     82:
                     83: /*
                     84:  * Return a string for a regular expression error passed.  This is a overkill,
                     85:  * because of the silly semantics of regerror (we can never know the size of
                     86:  * the buffer).
                     87:  */
                     88: char *
                     89: strregerror(errcode, preg)
                     90:        int errcode;
                     91:        regex_t *preg;
                     92: {
                     93:        static char *oe;
                     94:        size_t s;
                     95:
                     96:        if (oe != NULL)
                     97:                free(oe);
                     98:        s = regerror(errcode, preg, "", 0);
                     99:        oe = xmalloc(s);
                    100:        (void)regerror(errcode, preg, oe, s);
                    101:        return (oe);
                    102: }
                    103:
                    104: /*
                    105:  * Error reporting function
                    106:  */
                    107: void
                    108: err(int severity, const char *fmt, ...)
                    109: {
                    110:        va_list ap;
1.4       millert   111:
1.1       deraadt   112:        va_start(ap, fmt);
                    113:        (void)fprintf(stderr, "sed: ");
                    114:        switch (severity) {
                    115:        case WARNING:
                    116:        case COMPILE:
                    117:                (void)fprintf(stderr, "%lu: %s: ", linenum, fname);
                    118:        }
                    119:        (void)vfprintf(stderr, fmt, ap);
                    120:        va_end(ap);
                    121:        (void)fprintf(stderr, "\n");
                    122:        if (severity == WARNING)
                    123:                return;
                    124:        exit(1);
                    125:        /* NOTREACHED */
                    126: }