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.
15 //usage:#define dos2unix_trivial_usage
16 //usage: "[-ud] [FILE]"
17 //usage:#define dos2unix_full_usage "\n\n"
18 //usage: "Convert FILE in-place from DOS to Unix format.\n"
19 //usage: "When no file is given, use stdin/stdout.\n"
20 //usage: "\n -u dos2unix"
21 //usage: "\n -d unix2dos"
23 //usage:#define unix2dos_trivial_usage
24 //usage: "[-ud] [FILE]"
25 //usage:#define unix2dos_full_usage "\n\n"
26 //usage: "Convert FILE in-place from Unix to DOS format.\n"
27 //usage: "When no file is given, use stdin/stdout.\n"
28 //usage: "\n -u dos2unix"
29 //usage: "\n -d unix2dos"
33 /* This is a NOEXEC applet. Be very careful! */
40 /* if fn is NULL then input is stdin and output is stdout */
41 static void convert(char *fn
, int conv_type
)
45 char *temp_fn
= temp_fn
; /* for compiler */
46 char *resolved_fn
= resolved_fn
;
53 resolved_fn
= xmalloc_follow_symlinks(fn
);
54 if (resolved_fn
== NULL
)
55 bb_simple_perror_msg_and_die(fn
);
56 in
= xfopen_for_read(resolved_fn
);
57 fstat(fileno(in
), &st
);
59 temp_fn
= xasprintf("%sXXXXXX", resolved_fn
);
60 i
= xmkstemp(temp_fn
);
61 if (fchmod(i
, st
.st_mode
) == -1)
62 bb_simple_perror_msg_and_die(temp_fn
);
64 out
= xfdopen_for_write(i
);
67 while ((i
= fgetc(in
)) != EOF
) {
71 if (conv_type
== CT_UNIX2DOS
)
77 if (fclose(in
) < 0 || fclose(out
) < 0) {
79 bb_perror_nomsg_and_die();
81 xrename(temp_fn
, resolved_fn
);
87 int dos2unix_main(int argc
, char **argv
) MAIN_EXTERNALLY_VISIBLE
;
88 int dos2unix_main(int argc UNUSED_PARAM
, char **argv
)
92 /* See if we are supposed to be doing dos2unix or unix2dos */
93 conv_type
= CT_UNIX2DOS
;
94 if (applet_name
[0] == 'd') {
95 conv_type
= CT_DOS2UNIX
;
98 /* -u convert to unix, -d convert to dos */
99 opt_complementary
= "u--d:d--u"; /* mutually exclusive */
100 o
= getopt32(argv
, "du");
102 /* Do the conversion requested by an argument else do the default
103 * conversion depending on our name. */
109 /* might be convert(NULL) if there is no filename given */
110 convert(*argv
, conv_type
);
111 } while (*argv
&& *++argv
);