diff options
Diffstat (limited to 'dos2unix.c')
-rw-r--r-- | dos2unix.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/dos2unix.c b/dos2unix.c index b2dcfd9c2..8308c4179 100644 --- a/dos2unix.c +++ b/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; |