diff options
Diffstat (limited to 'dos2unix.c')
| -rw-r--r-- | dos2unix.c | 182 |
1 files changed, 144 insertions, 38 deletions
diff --git a/dos2unix.c b/dos2unix.c index 222c8f6a4..7f1c5617d 100644 --- a/dos2unix.c +++ b/dos2unix.c @@ -1,46 +1,152 @@ /* - Mini dos2unix implementation for busybox - - Copyright 1994,1995 Patrick Volkerding, Moorhead, Minnesota USA - All rights reserved. - - Redistribution and use of this source code, with or without modification, is - permitted provided that the following condition is met: - - 1. Redistributions of this source code must retain the above copyright - notice, this condition, and the following disclaimer. - - THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED - WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO - EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR - OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF - ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -*/ + * 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. + * Without arguments it reverts the format (e.i. if source is in UNIX format, + * output is in DOS format and vice versa). + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * See the COPYING file for license information. + */ #include <stdio.h> #include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <getopt.h> #include "busybox.h" -int dos2unix_main( int argc, char **argv ) { - int c; - if (argc > 1) { - c = *argv[1]; - if (c == '-') { - show_usage(); - } +#define CT_AUTO 0 +#define CT_UNIX2DOS 1 +#define CT_DOS2UNIX 2 + +int convert(char *fn, int ConvType); + +int dos2unix_main(int argc, char *argv[]) { + int ConvType = CT_AUTO; + int o; + + // process parameters + while ((o = getopt(argc, argv, "du")) != EOF) { + switch (o) { + case 'd': + ConvType = CT_UNIX2DOS; + break; + case 'u': + ConvType = CT_DOS2UNIX; + break; + default: + show_usage(); + } + } + + if (optind < argc) { + while(optind < argc) + if ((o = convert(argv[optind++], ConvType)) < 0) + break; + } + else + o = convert(NULL, ConvType); + + return o; +} + +// if fn is NULL then input is stdin and output is stdout +int convert(char *fn, int ConvType) { + char c; + char *tempFn = NULL; + FILE *in = stdin, *out = stdout; + + if (fn != NULL) { + if ((in = fopen(fn, "r")) == NULL) { + perror_msg(fn); + return -1; + } + tempFn = tmpnam(NULL); + if (tempFn == NULL || (out = fopen(tempFn, "w")) == 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 || remove(tempFn) < 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 || remove(tempFn) < 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); } - c = getchar(); - while (c != EOF) { - /* Eat any \r's... they shouldn't be here */ - while (c == '\r') c = getchar(); - if (c == EOF) break; - putchar(c); - c = getchar(); - } - return EXIT_SUCCESS; + 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 || remove(tempFn) < 0) { + perror_msg(NULL); + return -2; + } + } + + return 0; } |