1 /* vi: set sw=4 ts=4: */
5 * dos2unix '\n' convertor 0.5.0
6 * based on Unix2Dos 0.9.0 by Peter Hanecak (made 19.2.1997)
7 * Copyright 1997,.. by Peter Hanecak <hanecak@megaloman.sk>.
10 * dos2unix filters reading input from stdin and writing output to stdout.
12 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
17 /* This is a NOEXEC applet. Be very careful! */
24 /* if fn is NULL then input is stdin and output is stdout */
25 static void convert(char *fn, int conv_type)
29 char *temp_fn = temp_fn; /* for compiler */
30 char *resolved_fn = resolved_fn;
37 resolved_fn = xmalloc_follow_symlinks(fn);
38 if (resolved_fn == NULL)
39 bb_simple_perror_msg_and_die(fn);
40 in = xfopen_for_read(resolved_fn);
41 fstat(fileno(in), &st);
43 temp_fn = xasprintf("%sXXXXXX", resolved_fn);
44 i = xmkstemp(temp_fn);
45 if (fchmod(i, st.st_mode) == -1)
46 bb_simple_perror_msg_and_die(temp_fn);
48 out = xfdopen_for_write(i);
51 while ((i = fgetc(in)) != EOF) {
55 if (conv_type == CT_UNIX2DOS)
61 if (fclose(in) < 0 || fclose(out) < 0) {
63 bb_perror_nomsg_and_die();
65 xrename(temp_fn, resolved_fn);
71 int dos2unix_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
72 int dos2unix_main(int argc UNUSED_PARAM, char **argv)
76 /* See if we are supposed to be doing dos2unix or unix2dos */
77 conv_type = CT_UNIX2DOS;
78 if (applet_name[0] == 'd') {
79 conv_type = CT_DOS2UNIX;
82 /* -u convert to unix, -d convert to dos */
83 opt_complementary = "u--d:d--u"; /* mutually exclusive */
84 o = getopt32(argv, "du");
86 /* Do the conversion requested by an argument else do the default
87 * conversion depending on our name. */
93 /* might be convert(NULL) if there is no filename given */
94 convert(*argv, conv_type);
95 } while (*argv && *++argv);