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Diffstat (limited to 'package/toolbox/src/sed/misc.c')
| -rw-r--r-- | package/toolbox/src/sed/misc.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/package/toolbox/src/sed/misc.c b/package/toolbox/src/sed/misc.c new file mode 100644 index 000000000..1ed230014 --- /dev/null +++ b/package/toolbox/src/sed/misc.c @@ -0,0 +1,166 @@ +/* $OpenBSD: misc.c,v 1.12 2017/01/20 10:26:16 krw Exp $ */ + +/*- + * Copyright (c) 2016 + * mirabilos <m@mirbsd.org> + * Copyright (c) 1992 Diomidis Spinellis. + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Diomidis Spinellis of Imperial College, University of London. + * + * 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. 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. + */ + +/* $OpenBSD: reallocarray.c,v 1.1 2014/05/08 21:43:49 deraadt Exp $ */ +/* + * Copyright (c) 2008 Otto Moerbeek <otto@drijf.net> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/types.h> + +#include <errno.h> +#include <regex.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdarg.h> + +#include "defs.h" +#include "extern.h" + +__RCSID("$MirOS: src/usr.bin/sed/misc.c,v 1.3 2017/11/20 01:23:57 tg Exp $"); + +/* + * malloc with result test + */ +void * +xmalloc(size_t size) +{ + void *p; + + if ((p = malloc(size)) == NULL) + error(FATAL, "%s", strerror(errno)); + return (p); +} + +/* + * This is sqrt(SIZE_MAX+1), as s1*s2 <= SIZE_MAX + * if both s1 < MUL_NO_OVERFLOW and s2 < MUL_NO_OVERFLOW + */ +#define MUL_NO_OVERFLOW (1UL << (sizeof(size_t) * 4)) + +void * +xreallocarray(void *o, size_t nmemb, size_t size) +{ + void *p; + + if ((nmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) && + nmemb > 0 && __SIZE_MAX__ / nmemb < size) { + p = NULL; + errno = ENOMEM; + } else + p = realloc(o, size * nmemb); + + if (p == NULL) + error(FATAL, "%s", strerror(errno)); + return (p); +} + +/* + * realloc with result test + */ +void * +xrealloc(void *p, size_t size) +{ + + if ((p = realloc(p, size)) == NULL) + error(FATAL, "%s", strerror(errno)); + return (p); +} + +/* + * Return a string for a regular expression error passed. This is a overkill, + * because of the silly semantics of regerror (we can never know the size of + * the buffer). + */ +char * +strregerror(int errcode, regex_t *preg) +{ + static char *oe; + size_t s; + + free(oe); + s = regerror(errcode, preg, NULL, 0); + oe = xmalloc(s); + (void)regerror(errcode, preg, oe, s); + return (oe); +} + +/* + * Error reporting function + */ +__dead void +error(int severity, const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + (void)fprintf(stderr, "sed: "); + switch (severity) { + case COMPILE: + (void)fprintf(stderr, "%lu: %s: ", linenum, fname); + } + (void)vfprintf(stderr, fmt, ap); + va_end(ap); + (void)fprintf(stderr, "\n"); + exit(1); +} + +void +warning(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + (void)fprintf(stderr, "sed: "); + (void)fprintf(stderr, "%lu: %s: ", linenum, fname); + (void)vfprintf(stderr, fmt, ap); + va_end(ap); + (void)fprintf(stderr, "\n"); +} |