+/* vi: set sw=4 ts=4: */
/*
- Mini dos2unix implementation for busybox
-
- Copyright 1994,1995 Patrick Volkerding, Moorhead, Minnesota USA
- All rights reserved.
-
- Redistribution and use of this source code, with or without modification, is
- permitted provided that the following condition is met:
-
- 1. Redistributions of this source code must retain the above copyright
- notice, this condition, and the following disclaimer.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ * dos2unix for BusyBox
+ *
+ * dos2unix '\n' convertor 0.5.0
+ * based on Unix2Dos 0.9.0 by Peter Hanecak (made 19.2.1997)
+ * Copyright 1997,.. by Peter Hanecak <hanecak@megaloman.sk>.
+ * All rights reserved.
+ *
+ * dos2unix filters reading input from stdin and writing output to stdout.
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
+#include <string.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <fcntl.h>
#include "busybox.h"
-#include <stdio.h>
-
-int dos2unix_main( int argc, char **argv ) {
- int c;
- if (argc > 1) {
- c = *argv[1];
- if (c == '-') {
- usage(dos2unix_usage);
- }
+
+enum ConvType {
+ CT_UNIX2DOS = 1,
+ CT_DOS2UNIX
+} ConvType;
+
+/* if fn is NULL then input is stdin and output is stdout */
+static int convert(char *fn)
+{
+ FILE *in, *out;
+ int i;
+
+ if (fn != NULL) {
+ in = bb_xfopen(fn, "rw");
+ /*
+ The file is then created with mode read/write and
+ permissions 0666 for glibc 2.0.6 and earlier or
+ 0600 for glibc 2.0.7 and later.
+ */
+ snprintf(bb_common_bufsiz1, sizeof(bb_common_bufsiz1), "%sXXXXXX", fn);
+ /*
+ sizeof bb_common_bufsiz1 is 4096, so it should be big enough to
+ hold the full path. However if the output is truncated the
+ subsequent call to mkstemp would fail.
+ */
+ if ((i = mkstemp(&bb_common_bufsiz1[0])) == -1
+ || chmod(bb_common_bufsiz1, 0600) == -1) {
+ bb_perror_nomsg_and_die();
+ }
+ out = fdopen(i, "w+");
+ if (!out) {
+ close(i);
+ remove(bb_common_bufsiz1);
+ }
+ } else {
+ in = stdin;
+ out = stdout;
+ }
+
+ while ((i = fgetc(in)) != EOF) {
+ if (i == '\r')
+ continue;
+ if (i == '\n') {
+ if (ConvType == CT_UNIX2DOS)
+ fputc('\r', out);
+ fputc('\n', out);
+ continue;
+ }
+ fputc(i, out);
+ }
+
+ if (fn != NULL) {
+ if (fclose(in) < 0 || fclose(out) < 0) {
+ bb_perror_nomsg();
+ remove(bb_common_bufsiz1);
+ return -2;
+ }
+ /* Assume they are both on the same filesystem (which
+ * should be true since we put them into the same directory
+ * so we _should_ be ok, but you never know... */
+ if (rename(bb_common_bufsiz1, fn) < 0) {
+ bb_perror_msg("cannot rename '%s' as '%s'", bb_common_bufsiz1, fn);
+ return -1;
+ }
}
- c = getchar();
- while (c != EOF) {
- /* Eat any \r's... they shouldn't be here */
- while (c == '\r') c = getchar();
- if (c == EOF) break;
- putchar(c);
- c = getchar();
- }
+
return 0;
}
+
+int dos2unix_main(int argc, char *argv[])
+{
+ int o;
+
+ /* See if we are supposed to be doing dos2unix or unix2dos */
+ if (bb_applet_name[0] == 'd') {
+ ConvType = CT_DOS2UNIX; /*2 */
+ } else {
+ ConvType = CT_UNIX2DOS; /*1 */
+ }
+ /* -u and -d are mutally exclusive */
+ bb_opt_complementally = "?:u--d:d--u";
+ /* process parameters */
+ /* -u convert to unix */
+ /* -d convert to dos */
+ o = bb_getopt_ulflags(argc, argv, "du");
+
+ /* Do the conversion requested by an argument else do the default
+ * conversion depending on our name. */
+ if (o)
+ ConvType = o;
+
+ if (optind < argc) {
+ while (optind < argc)
+ if ((o = convert(argv[optind++])) < 0)
+ break;
+ } else
+ o = convert(NULL);
+
+ return o;
+}