+/* 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.
-*/
-
-#include "busybox.h"
-#include <stdio.h>
-#include <stdlib.h>
-
-int dos2unix_main( int argc, char **argv ) {
- int c;
- if (argc > 1) {
- c = *argv[1];
- if (c == '-') {
- usage(dos2unix_usage);
- }
+ * dos2unix for BusyBox
+ *
+ * dos2unix '\n' converter 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 GPLv2 or later, see file LICENSE in this source tree.
+ */
+//config:config DOS2UNIX
+//config: bool "dos2unix (5.1 kb)"
+//config: default y
+//config: help
+//config: dos2unix is used to convert a text file from DOS format to
+//config: UNIX format, and vice versa.
+//config:
+//config:config UNIX2DOS
+//config: bool "unix2dos (5.1 kb)"
+//config: default y
+//config: help
+//config: unix2dos is used to convert a text file from UNIX format to
+//config: DOS format, and vice versa.
+
+//applet:IF_DOS2UNIX(APPLET_NOEXEC(dos2unix, dos2unix, BB_DIR_USR_BIN, BB_SUID_DROP, dos2unix))
+//applet:IF_UNIX2DOS(APPLET_NOEXEC(unix2dos, dos2unix, BB_DIR_USR_BIN, BB_SUID_DROP, unix2dos))
+
+//kbuild:lib-$(CONFIG_DOS2UNIX) += dos2unix.o
+//kbuild:lib-$(CONFIG_UNIX2DOS) += dos2unix.o
+
+//usage:#define dos2unix_trivial_usage
+//usage: "[-ud] [FILE]"
+//usage:#define dos2unix_full_usage "\n\n"
+//usage: "Convert FILE in-place from DOS to Unix format.\n"
+//usage: "When no file is given, use stdin/stdout.\n"
+//usage: "\n -u dos2unix"
+//usage: "\n -d unix2dos"
+//usage:
+//usage:#define unix2dos_trivial_usage
+//usage: "[-ud] [FILE]"
+//usage:#define unix2dos_full_usage "\n\n"
+//usage: "Convert FILE in-place from Unix to DOS format.\n"
+//usage: "When no file is given, use stdin/stdout.\n"
+//usage: "\n -u dos2unix"
+//usage: "\n -d unix2dos"
+
+#include "libbb.h"
+
+/* This is a NOEXEC applet. Be very careful! */
+
+enum {
+ CT_UNIX2DOS = 1,
+ CT_DOS2UNIX
+};
+
+/* if fn is NULL then input is stdin and output is stdout */
+static void convert(char *fn, int conv_type)
+{
+ FILE *in, *out;
+ int ch;
+ char *temp_fn = temp_fn; /* for compiler */
+ char *resolved_fn = resolved_fn;
+
+ in = stdin;
+ out = stdout;
+ if (fn != NULL) {
+ struct stat st;
+ int fd;
+
+ resolved_fn = xmalloc_follow_symlinks(fn);
+ if (resolved_fn == NULL)
+ bb_simple_perror_msg_and_die(fn);
+ in = xfopen_for_read(resolved_fn);
+ xfstat(fileno(in), &st, resolved_fn);
+
+ temp_fn = xasprintf("%sXXXXXX", resolved_fn);
+ fd = xmkstemp(temp_fn);
+ if (fchmod(fd, st.st_mode) == -1)
+ bb_simple_perror_msg_and_die(temp_fn);
+ fchown(fd, st.st_uid, st.st_gid);
+
+ out = xfdopen_for_write(fd);
}
- 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 EXIT_SUCCESS;
+
+ while ((ch = fgetc(in)) != EOF) {
+ if (ch == '\r')
+ continue;
+ if (ch == '\n')
+ if (conv_type == CT_UNIX2DOS)
+ fputc('\r', out);
+ fputc(ch, out);
+ }
+
+ if (fn != NULL) {
+ if (fclose(in) < 0 || fclose(out) < 0) {
+ unlink(temp_fn);
+ bb_perror_nomsg_and_die();
+ }
+ xrename(temp_fn, resolved_fn);
+ free(temp_fn);
+ free(resolved_fn);
+ }
+}
+
+int dos2unix_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int dos2unix_main(int argc UNUSED_PARAM, char **argv)
+{
+ int o, conv_type;
+
+ /* See if we are supposed to be doing dos2unix or unix2dos */
+ if (ENABLE_DOS2UNIX
+ && (!ENABLE_UNIX2DOS || applet_name[0] == 'd')
+ ) {
+ conv_type = CT_DOS2UNIX;
+ } else {
+ conv_type = CT_UNIX2DOS;
+ }
+
+ /* -u convert to unix, -d convert to dos */
+ o = getopt32(argv, "^" "du" "\0" "u--d:d--u"); /* mutually exclusive */
+
+ /* Do the conversion requested by an argument else do the default
+ * conversion depending on our name. */
+ if (o)
+ conv_type = o;
+
+ argv += optind;
+ do {
+ /* might be convert(NULL) if there is no filename given */
+ convert(*argv, conv_type);
+ } while (*argv && *++argv);
+
+ return 0;
}
projects / oweals / busybox.git / blobdiff