| /* 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 ConvType { |
| CT_UNIX2DOS = 1, |
| CT_DOS2UNIX |
| } ConvType; |
| |
| /* if fn is NULL then input is stdin and output is stdout */ |
| static int convert(char *fn) |
| { |
| FILE *in, *out; |
| int i; |
| |
| if (fn != NULL) { |
| in = xfopen(fn, "rw"); |
| /* |
| The file is then created with mode read/write and |
| permissions 0666 for glibc 2.0.6 and earlier or |
| 0600 for glibc 2.0.7 and later. |
| */ |
| snprintf(bb_common_bufsiz1, sizeof(bb_common_bufsiz1), "%sXXXXXX", fn); |
| /* |
| sizeof bb_common_bufsiz1 is 4096, so it should be big enough to |
| hold the full path. However if the output is truncated the |
| subsequent call to mkstemp would fail. |
| */ |
| i = mkstemp(&bb_common_bufsiz1[0]); |
| if (i == -1 || chmod(bb_common_bufsiz1, 0600) == -1) { |
| bb_perror_nomsg_and_die(); |
| } |
| out = fdopen(i, "w+"); |
| if (!out) { |
| close(i); |
| remove(bb_common_bufsiz1); |
| } |
| } else { |
| in = stdin; |
| out = stdout; |
| } |
| |
| while ((i = fgetc(in)) != EOF) { |
| if (i == '\r') |
| continue; |
| if (i == '\n') { |
| if (ConvType == CT_UNIX2DOS) |
| fputc('\r', out); |
| fputc('\n', out); |
| continue; |
| } |
| fputc(i, out); |
| } |
| |
| if (fn != NULL) { |
| if (fclose(in) < 0 || fclose(out) < 0) { |
| bb_perror_nomsg(); |
| remove(bb_common_bufsiz1); |
| return -2; |
| } |
| /* Assume they are both on the same filesystem (which |
| * should be true since we put them into the same directory |
| * so we _should_ be ok, but you never know... */ |
| if (rename(bb_common_bufsiz1, fn) < 0) { |
| bb_perror_msg("cannot rename '%s' as '%s'", bb_common_bufsiz1, fn); |
| return -1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| int dos2unix_main(int argc, char **argv); |
| int dos2unix_main(int argc, char **argv) |
| { |
| int o; |
| |
| /* See if we are supposed to be doing dos2unix or unix2dos */ |
| if (applet_name[0] == 'd') { |
| ConvType = CT_DOS2UNIX; /*2 */ |
| } else { |
| ConvType = CT_UNIX2DOS; /*1 */ |
| } |
| /* -u and -d are mutally exclusive */ |
| opt_complementary = "?:u--d:d--u"; |
| /* process parameters */ |
| /* -u convert to unix */ |
| /* -d convert to dos */ |
| o = getopt32(argc, argv, "du"); |
| |
| /* Do the conversion requested by an argument else do the default |
| * conversion depending on our name. */ |
| if (o) |
| ConvType = o; |
| |
| if (optind < argc) { |
| while (optind < argc) |
| if ((o = convert(argv[optind++])) < 0) |
| break; |
| } else |
| o = convert(NULL); |
| |
| return o; |
| } |