mirror of
https://github.com/sheumann/hush.git
synced 2024-12-21 08:29:45 +00:00
99 lines
2.1 KiB
C
99 lines
2.1 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* dos2unix for BusyBox
|
|
*
|
|
* dos2unix '\n' convertor 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 the GPL v2 or later, see the file LICENSE in this tarball.
|
|
*/
|
|
|
|
#include "libbb.h"
|
|
|
|
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 i;
|
|
char *temp_fn = temp_fn; /* for compiler */
|
|
char *resolved_fn = resolved_fn;
|
|
|
|
in = stdin;
|
|
out = stdout;
|
|
if (fn != NULL) {
|
|
struct stat st;
|
|
|
|
resolved_fn = xmalloc_follow_symlinks(fn);
|
|
if (resolved_fn == NULL)
|
|
bb_simple_perror_msg_and_die(fn);
|
|
in = xfopen(resolved_fn, "r");
|
|
fstat(fileno(in), &st);
|
|
|
|
temp_fn = xasprintf("%sXXXXXX", resolved_fn);
|
|
i = mkstemp(temp_fn);
|
|
if (i == -1
|
|
|| fchmod(i, st.st_mode) == -1
|
|
|| !(out = fdopen(i, "w+"))
|
|
) {
|
|
bb_simple_perror_msg_and_die(temp_fn);
|
|
}
|
|
}
|
|
|
|
while ((i = fgetc(in)) != EOF) {
|
|
if (i == '\r')
|
|
continue;
|
|
if (i == '\n')
|
|
if (conv_type == CT_UNIX2DOS)
|
|
fputc('\r', out);
|
|
fputc(i, 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, char **argv)
|
|
{
|
|
int o, conv_type;
|
|
|
|
/* See if we are supposed to be doing dos2unix or unix2dos */
|
|
conv_type = CT_UNIX2DOS;
|
|
if (applet_name[0] == 'd') {
|
|
conv_type = CT_DOS2UNIX;
|
|
}
|
|
|
|
/* -u convert to unix, -d convert to dos */
|
|
opt_complementary = "u--d:d--u"; /* mutually exclusive */
|
|
o = getopt32(argv, "du");
|
|
|
|
/* Do the conversion requested by an argument else do the default
|
|
* conversion depending on our name. */
|
|
if (o)
|
|
conv_type = o;
|
|
|
|
do {
|
|
/* might be convert(NULL) if there is no filename given */
|
|
convert(argv[optind], conv_type);
|
|
optind++;
|
|
} while (optind < argc);
|
|
|
|
return 0;
|
|
}
|