162 lines
4.7 KiB
C
162 lines
4.7 KiB
C
/*-
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* Copyright (c) 1987, 1992 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Modified for Linux by Charles Hannum (mycroft@gnu.ai.mit.edu)
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* and Brian Koehmstedt (bpk@gnu.ai.mit.edu)
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*
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* Wed Sep 14 22:26:00 1994: Patch from bjdouma <bjdouma@xs4all.nl> to handle
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* last line that has no newline correctly.
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* 3-Jun-1998: Patched by Nicolai Langfeldt to work better on Linux:
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* Handle any-length-lines. Code copied from util-linux' setpwnam.c
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* 1999-02-22 Arkadiusz Mi<4D>kiewicz <misiek@pld.ORG.PL>
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* added Native Language Support
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* 1999-09-19 Bruno Haible <haible@clisp.cons.org>
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* modified to work correctly in multi-byte locales
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* July 2010 - Davidlohr Bueso <dave@gnu.org>
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* Fixed memory leaks (including Linux signal handling)
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* Added some memory allocation error handling
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* Lowered the default buffer size to 256, instead of 512 bytes
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* Changed tab indentation to 8 chars for better reading the code
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*/
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#include <stdarg.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <signal.h>
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#include "nls.h"
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#include "xalloc.h"
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#include "widechar.h"
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#include "c.h"
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wchar_t *buf;
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static void sig_handler(int signo)
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{
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free(buf);
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_exit(EXIT_SUCCESS);
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}
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static void __attribute__((__noreturn__)) usage(FILE *out)
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{
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fprintf(out, _("Usage: %s [file ...]\n"),
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program_invocation_short_name);
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fprintf(out, _("\nFor more information see rev(1).\n"));
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exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
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}
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int main(int argc, char *argv[])
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{
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char *filename = "stdin";
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wchar_t *t;
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size_t len, bufsiz = BUFSIZ;
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FILE *fp = stdin;
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int ch, rval = EXIT_SUCCESS;
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setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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signal(SIGINT, sig_handler);
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signal(SIGTERM, sig_handler);
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while ((ch = getopt(argc, argv, "")) != -1)
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switch(ch) {
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case '?':
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case 'h':
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usage(stdout);
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default:
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usage(stderr);
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}
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argc -= optind;
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argv += optind;
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buf = xmalloc(bufsiz * sizeof(wchar_t));
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do {
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if (*argv) {
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if ((fp = fopen(*argv, "r")) == NULL) {
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warn(_("%s: open failed"), *argv );
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rval = EXIT_FAILURE;
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++argv;
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continue;
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}
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filename = *argv++;
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}
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while (fgetws(buf, bufsiz, fp)) {
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len = wcslen(buf);
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/* This is my hack from setpwnam.c -janl */
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while (buf[len-1] != '\n' && !feof(fp)) {
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/* Extend input buffer if it failed getting the whole line */
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/* So now we double the buffer size */
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bufsiz *= 2;
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buf = xrealloc(buf, bufsiz * sizeof(wchar_t));
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/* And fill the rest of the buffer */
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if (!fgetws(&buf[len], bufsiz/2, fp))
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break;
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len = wcslen(buf);
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}
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t = buf + len - 1 - (*(buf+len-1)=='\r' || *(buf+len-1)=='\n');
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for ( ; t >= buf; --t) {
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if (*t != 0)
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putwchar(*t);
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}
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putwchar('\n');
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}
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fflush(fp);
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if (ferror(fp)) {
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warn("%s", filename);
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rval = EXIT_FAILURE;
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}
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if (fclose(fp))
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rval = EXIT_FAILURE;
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} while(*argv);
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free(buf);
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return rval;
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}
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