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/*-
* Copyright (c) 1987, 1992 The Regents of the University of California.
* All rights reserved.
*
* 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.
*
* Modified for Linux by Charles Hannum (mycroft@gnu.ai.mit.edu)
* and Brian Koehmstedt (bpk@gnu.ai.mit.edu)
*
* Wed Sep 14 22:26:00 1994: Patch from bjdouma <bjdouma@xs4all.nl> to handle
* last line that has no newline correctly.
* 3-Jun-1998: Patched by Nicolai Langfeldt to work better on Linux:
* Handle any-length-lines. Code copied from util-linux' setpwnam.c
* 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@pld.ORG.PL>
* added Native Language Support
* 1999-09-19 Bruno Haible <haible@clisp.cons.org>
* modified to work correctly in multi-byte locales
* July 2010 - Davidlohr Bueso <dave@gnu.org>
* Fixed memory leaks (including Linux signal handling)
* Added some memory allocation error handling
* Lowered the default buffer size to 256, instead of 512 bytes
* Changed tab indentation to 8 chars for better reading the code
*/
#include <stdarg.h>
#include <sys/types.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <err.h>
#include <signal.h>
#include "nls.h"
#include "widechar.h"
wchar_t *buf;
static void sig_handler(int signo)
{
free(buf);
_exit(EXIT_SUCCESS);
}
static void __attribute__((__noreturn__)) usage(FILE *out)
{
fprintf(out, _("Usage: %s [file ...]\n"),
program_invocation_short_name);
fprintf(out, _("\nFor more information see rev(1).\n"));
exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
}
int main(int argc, char *argv[])
{
char *filename = "stdin";
wchar_t *t;
size_t len, bufsiz = BUFSIZ;
FILE *fp = stdin;
int ch, rval = EXIT_SUCCESS;
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
signal(SIGINT, sig_handler);
signal(SIGTERM, sig_handler);
while ((ch = getopt(argc, argv, "")) != -1)
switch(ch) {
case '?':
case 'h':
usage(stdout);
default:
usage(stderr);
}
argc -= optind;
argv += optind;
do {
if (*argv) {
if ((fp = fopen(*argv, "r")) == NULL) {
warn(_("%s: open failed"), *argv );
rval = EXIT_FAILURE;
++argv;
continue;
}
filename = *argv++;
}
buf = malloc(bufsiz * sizeof(wchar_t));
if (!buf)
err(EXIT_FAILURE, _("malloc failed"));
while (fgetws(buf, bufsiz, fp)) {
len = wcslen(buf);
/* This is my hack from setpwnam.c -janl */
while (buf[len-1] != '\n' && !feof(fp)) {
wchar_t *x;
/* Extend input buffer if it failed getting the whole line */
/* So now we double the buffer size */
bufsiz *= 2;
x = realloc(buf, bufsiz * sizeof(wchar_t));
if (!x) {
free(buf);
err(EXIT_FAILURE, _("realloc failed"));
}
buf = x;
/* And fill the rest of the buffer */
if (!fgetws(&buf[len], bufsiz/2, fp))
break;
len = wcslen(buf);
}
t = buf + len - 1 - (*(buf+len-1)=='\r' || *(buf+len-1)=='\n');
for ( ; t >= buf; --t) {
if (*t != 0)
putwchar(*t);
}
putwchar('\n');
}
fflush(fp);
if (ferror(fp)) {
warn("%s", filename);
rval = EXIT_FAILURE;
}
if (fclose(fp))
rval = EXIT_FAILURE;
} while(*argv);
free(buf);
return rval;
}
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