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comparison toys/other/dos2unix.c @ 653:2986aa63a021

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Move commands into "posix", "lsb", and "other" menus/directories.
author Rob Landley <rob@landley.net>
date Sat, 25 Aug 2012 14:25:22 -0500
parents toys/dos2unix.c@6a096902309d
children 6df4ccc0acbe
comparison
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652:2d7c56913fda 653:2986aa63a021
1 /* vi: set sw=4 ts=4:
2 *
3 * dos2unix.c - convert newline format
4 *
5 * Copyright 2012 Rob Landley <rob@landley.net>
6 *
7 * No standard
8
9 USE_DOS2UNIX(NEWTOY(dos2unix, NULL, TOYFLAG_BIN))
10 USE_DOS2UNIX(OLDTOY(unix2dos, dos2unix, NULL, TOYFLAG_BIN))
11
12 config DOS2UNIX
13 bool "dos2unix/unix2dos"
14 default y
15 help
16 usage: dos2unix/unix2dos [file...]
17
18 Convert newline format between dos (\r\n) and unix (just \n)
19 If no files listed copy from stdin, "-" is a synonym for stdin.
20 */
21
22 #include "toys.h"
23
24 DEFINE_GLOBALS(
25 char *tempfile;
26 )
27
28 #define TT this.dos2unix
29
30 static void do_dos2unix(int fd, char *name)
31 {
32 char c = toys.which->name[0];
33 int outfd = 1, catch = 0;
34
35 if (fd) outfd = copy_tempfile(fd, name, &TT.tempfile);
36
37 for (;;) {
38 int len, in, out;
39
40 len = read(fd, toybuf+(sizeof(toybuf)/2), sizeof(toybuf)/2);
41 if (len<0) {
42 perror_msg("%s",name);
43 toys.exitval = 1;
44 }
45 if (len<1) break;
46
47 for (in = out = 0; in < len; in++) {
48 char x = toybuf[in+sizeof(toybuf)/2];
49
50 // Drop \r only if followed by \n in dos2unix mode
51 if (catch) {
52 if (c == 'u' || x != '\n') toybuf[out++] = '\r';
53 catch = 0;
54 // Add \r only if \n not after \r in unix2dos mode
55 } else if (c == 'u' && x == '\n') toybuf[out++] = '\r';
56
57 if (x == '\r') catch++;
58 else toybuf[out++] = x;
59 }
60 xwrite(outfd, toybuf, out);
61 }
62 if (catch) xwrite(outfd, "\r", 1);
63
64 if (fd) replace_tempfile(-1, outfd, &TT.tempfile);
65 }
66
67 void dos2unix_main(void)
68 {
69 loopfiles(toys.optargs, do_dos2unix);
70 }