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-rw-r--r--coreutils/dos2unix.c84
1 files changed, 84 insertions, 0 deletions
diff --git a/coreutils/dos2unix.c b/coreutils/dos2unix.c
index b2dcfd9..8308c41 100644
--- a/coreutils/dos2unix.c
+++ b/coreutils/dos2unix.c
@@ -27,9 +27,93 @@
* See the COPYING file for license information.
*/
+#include <string.h>
#include <getopt.h>
#include "busybox.h"
+// if fn is NULL then input is stdin and output is stdout
+extern int convert(char *fn, int ConvType) {
+ char c;
+ char *tempFn = NULL;
+ FILE *in = stdin, *out = stdout;
+
+ if (fn != NULL) {
+ if ((in = wfopen(fn, "r")) == NULL) {
+ return -1;
+ }
+ if ((out = tmpfile()) == NULL) {
+ perror_msg(NULL);
+ return -2;
+ }
+ }
+
+ while ((c = fgetc(in)) != EOF) {
+ if (c == '\r') {
+ if ((ConvType == CT_UNIX2DOS) && (fn != NULL)) {
+ // file is alredy in DOS format so it is not necessery to touch it
+ if (fclose(in) < 0 || fclose(out) < 0) {
+ perror_msg(NULL);
+ return -2;
+ }
+ return 0;
+ }
+ if (!ConvType)
+ ConvType = CT_DOS2UNIX;
+ break;
+ }
+ if (c == '\n') {
+ if ((ConvType == CT_DOS2UNIX) && (fn != NULL)) {
+ // file is alredy in UNIX format so it is not necessery to touch it
+ if ((fclose(in) < 0) || (fclose(out) < 0)) {
+ perror_msg(NULL);
+ return -2;
+ }
+ return 0;
+ }
+ if (!ConvType) {
+ ConvType = CT_UNIX2DOS;
+ }
+ if (ConvType == CT_UNIX2DOS) {
+ fputc('\r', out);
+ }
+ fputc('\n', out);
+ break;
+ }
+ fputc(c, out);
+ }
+ if (c != EOF)
+ while ((c = fgetc(in)) != EOF) {
+ if (c == '\r')
+ continue;
+ if (c == '\n') {
+ if (ConvType == CT_UNIX2DOS)
+ fputc('\r', out);
+ fputc('\n', out);
+ continue;
+ }
+ fputc(c, out);
+ }
+
+ if (fn != NULL) {
+ if (fclose(in) < 0 || fclose(out) < 0 ||
+ (in = fopen(tempFn, "r")) == NULL || (out = fopen(fn, "w")) == NULL) {
+ perror_msg(NULL);
+ return -2;
+ }
+
+ while ((c = fgetc(in)) != EOF) {
+ fputc(c, out);
+ }
+
+ if ((fclose(in) < 0) || (fclose(out) < 0)) {
+ perror_msg(NULL);
+ return -2;
+ }
+ }
+
+ return 0;
+}
+
int dos2unix_main(int argc, char *argv[]) {
int ConvType = CT_AUTO;
int o;