4 * dos2unix '\n' convertor 0.5.0
5 * based on Unix2Dos 0.9.0 by Peter Hanecak (made 19.2.1997)
6 * Copyright 1997,.. by Peter Hanecak <hanecak@megaloman.sk>.
9 * dos2unix filters reading input from stdin and writing output to stdout.
10 * Without arguments it reverts the format (e.i. if source is in UNIX format,
11 * output is in DOS format and vice versa).
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version 2
16 * of the License, or (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 * See the COPYING file for license information.
37 static const char letters[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
39 // if fn is NULL then input is stdin and output is stdout
40 static int convert(char *fn, int ConvType)
45 static uint64_t value=0;
46 FILE *in = stdin, *out = stdout;
49 if ((in = wfopen(fn, "rw")) == NULL) {
57 error_msg_and_die("unique name not found");
58 /* Get some semi random stuff to try and make a
59 * random filename based (and in the same dir as)
60 * the input file... */
61 gettimeofday (&tv, NULL);
62 value += ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec ^ getpid ();
63 tempFn[++c] = letters[value % 62];
67 if ((fd = open(tempFn, O_RDWR | O_CREAT | O_EXCL, 0600)) < 0 ) {
70 out = fdopen(fd, "w+");
80 while ((c = fgetc(in)) != EOF) {
82 if ((ConvType == CT_UNIX2DOS) && (fn != NULL)) {
83 // file is alredy in DOS format so it is not necessery to touch it
85 if (fclose(in) < 0 || fclose(out) < 0) {
92 ConvType = CT_DOS2UNIX;
96 if ((ConvType == CT_DOS2UNIX) && (fn != NULL)) {
97 // file is alredy in UNIX format so it is not necessery to touch it
99 if ((fclose(in) < 0) || (fclose(out) < 0)) {
106 ConvType = CT_UNIX2DOS;
108 if (ConvType == CT_UNIX2DOS) {
117 while ((c = fgetc(in)) != EOF) {
121 if (ConvType == CT_UNIX2DOS)
130 if (fclose(in) < 0 || fclose(out) < 0) {
136 /* Assume they are both on the same filesystem */
137 if (rename(tempFn, fn) < 0) {
138 perror_msg("unable to rename '%s' as '%s'", tempFn, fn);
146 int dos2unix_main(int argc, char *argv[])
148 int ConvType = CT_AUTO;
151 //See if we are supposed to be doing dos2unix or unix2dos
152 if (argv[0][0]=='d') {
153 ConvType = CT_DOS2UNIX;
155 if (argv[0][0]=='u') {
156 ConvType = CT_UNIX2DOS;
159 // process parameters
160 while ((o = getopt(argc, argv, "du")) != EOF) {
163 ConvType = CT_UNIX2DOS;
166 ConvType = CT_DOS2UNIX;
175 if ((o = convert(argv[optind++], ConvType)) < 0)
179 o = convert(NULL, ConvType);