| /* 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 GPLv2 or later, see file LICENSE in this source tree. |
| */ |
| |
| #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_for_read(resolved_fn); |
| fstat(fileno(in), &st); |
| |
| temp_fn = xasprintf("%sXXXXXX", resolved_fn); |
| i = mkstemp(temp_fn); |
| if (i == -1 |
| || fchmod(i, st.st_mode) == -1 |
| ) { |
| bb_simple_perror_msg_and_die(temp_fn); |
| } |
| out = xfdopen_for_write(i); |
| } |
| |
| 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 UNUSED_PARAM, 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; |
| |
| argv += optind; |
| do { |
| /* might be convert(NULL) if there is no filename given */ |
| convert(*argv, conv_type); |
| } while (*argv && *++argv); |
| |
| return 0; |
| } |