Adding upstream version 2.39.3.upstream/2.39.3

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 205 insertions, 0 deletions

diff --git a/text-utils/rev.c b/text-utils/rev.c
new file mode 100644
index 0000000..fbf04d1
--- /dev/null
+++ b/text-utils/rev.c
@@ -0,0 +1,205 @@
+/*-
+ * 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 Miśkiewicz <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 <signal.h>
+#include <getopt.h>
+
+#include "nls.h"
+#include "xalloc.h"
+#include "widechar.h"
+#include "c.h"
+#include "closestream.h"
+
+static void sig_handler(int signo __attribute__ ((__unused__)))
+{
+	_exit(EXIT_SUCCESS);
+}
+
+static void __attribute__((__noreturn__)) usage(void)
+{
+	FILE *out = stdout;
+	fprintf(out, _("Usage: %s [options] [file ...]\n"),
+		program_invocation_short_name);
+
+	fputs(USAGE_SEPARATOR, out);
+	fputs(_("Reverse lines characterwise.\n"), out);
+
+	fputs(USAGE_OPTIONS, out);
+	printf(USAGE_HELP_OPTIONS(16));
+	printf(USAGE_MAN_TAIL("rev(1)"));
+
+	exit(EXIT_SUCCESS);
+}
+
+static void reverse_str(wchar_t *str, size_t n)
+{
+	size_t i;
+
+	for (i = 0; i < n / 2; ++i) {
+		wchar_t tmp = str[i];
+		str[i] = str[n - 1 - i];
+		str[n - 1 - i] = tmp;
+	}
+}
+
+static size_t read_line(wchar_t sep, wchar_t *str, size_t n, FILE *stream)
+{
+	size_t r = 0;
+	while (r < n) {
+		wint_t c = fgetwc(stream);
+		if (c == WEOF)
+			break;
+		str[r++] = c;
+		if ((wchar_t) c == sep)
+			break;
+	}
+	return r;
+}
+
+static void write_line(wchar_t *str, size_t n, FILE *stream)
+{
+	for (size_t i = 0; i < n; i++)
+		fputwc(str[i], stream);
+}
+
+int main(int argc, char *argv[])
+{
+	char const *filename = "stdin";
+	wchar_t *buf;
+	wchar_t sep = L'\n';
+	size_t len, bufsiz = BUFSIZ;
+	FILE *fp = stdin;
+	int ch, rval = EXIT_SUCCESS;
+	uintmax_t line;
+
+	static const struct option longopts[] = {
+		{ "zero",       no_argument,       NULL, '0' },
+		{ "version",    no_argument,       NULL, 'V' },
+		{ "help",       no_argument,       NULL, 'h' },
+		{ NULL,         0, NULL, 0 }
+	};
+
+	setlocale(LC_ALL, "");
+	bindtextdomain(PACKAGE, LOCALEDIR);
+	textdomain(PACKAGE);
+	close_stdout_atexit();
+
+	signal(SIGINT, sig_handler);
+	signal(SIGTERM, sig_handler);
+
+	while ((ch = getopt_long(argc, argv, "Vh0", longopts, NULL)) != -1)
+		switch(ch) {
+		case '0':
+			sep = L'\0';
+			break;
+		case 'V':
+			print_version(EXIT_SUCCESS);
+		case 'h':
+			usage();
+		default:
+			errtryhelp(EXIT_FAILURE);
+		}
+
+	argc -= optind;
+	argv += optind;
+
+	buf = xmalloc(bufsiz * sizeof(wchar_t));
+
+	do {
+		if (*argv) {
+			if ((fp = fopen(*argv, "r")) == NULL) {
+				warn(_("cannot open %s"), *argv );
+				rval = EXIT_FAILURE;
+				++argv;
+				continue;
+			}
+			filename = *argv++;
+		}
+
+		line = 0;
+		while (!feof(fp)) {
+			len = read_line(sep, buf, bufsiz, fp);
+			if (len == 0)
+				continue;
+
+			/* This is my hack from setpwnam.c -janl */
+			while (len == bufsiz && !feof(fp)) {
+				/* Extend input buffer if it failed getting the whole line */
+				/* So now we double the buffer size */
+				bufsiz *= 2;
+
+				buf = xrealloc(buf, bufsiz * sizeof(wchar_t));
+
+				/* And fill the rest of the buffer */
+				len += read_line(sep, &buf[len], bufsiz/2, fp);
+			}
+			reverse_str(buf, buf[len - 1] == sep ? len - 1 : len);
+			write_line(buf, len, stdout);
+			line++;
+		}
+		if (ferror(fp)) {
+			warn("%s: %ju", filename, line);
+			rval = EXIT_FAILURE;
+		}
+		if (fp != stdin)
+			fclose(fp);
+	} while(*argv);
+
+	free(buf);
+	return rval;
+}
+