| /* 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. |
| */ |
| //config:config DOS2UNIX |
| //config: bool "dos2unix" |
| //config: default y |
| //config: help |
| //config: dos2unix is used to convert a text file from DOS format to |
| //config: UNIX format, and vice versa. |
| //config: |
| //config:config UNIX2DOS |
| //config: bool "unix2dos" |
| //config: default y |
| //config: help |
| //config: unix2dos is used to convert a text file from UNIX format to |
| //config: DOS format, and vice versa. |
| |
| //applet:IF_DOS2UNIX(APPLET_NOEXEC(dos2unix, dos2unix, BB_DIR_USR_BIN, BB_SUID_DROP, dos2unix)) |
| //applet:IF_UNIX2DOS(APPLET_NOEXEC(unix2dos, dos2unix, BB_DIR_USR_BIN, BB_SUID_DROP, unix2dos)) |
| |
| //kbuild:lib-$(CONFIG_DOS2UNIX) += dos2unix.o |
| //kbuild:lib-$(CONFIG_UNIX2DOS) += dos2unix.o |
| |
| //usage:#define dos2unix_trivial_usage |
| //usage: "[-ud] [FILE]" |
| //usage:#define dos2unix_full_usage "\n\n" |
| //usage: "Convert FILE in-place from DOS to Unix format.\n" |
| //usage: "When no file is given, use stdin/stdout.\n" |
| //usage: "\n -u dos2unix" |
| //usage: "\n -d unix2dos" |
| //usage: |
| //usage:#define unix2dos_trivial_usage |
| //usage: "[-ud] [FILE]" |
| //usage:#define unix2dos_full_usage "\n\n" |
| //usage: "Convert FILE in-place from Unix to DOS format.\n" |
| //usage: "When no file is given, use stdin/stdout.\n" |
| //usage: "\n -u dos2unix" |
| //usage: "\n -d unix2dos" |
| |
| #include "libbb.h" |
| |
| /* This is a NOEXEC applet. Be very careful! */ |
| |
| 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 ch; |
| char *temp_fn = temp_fn; /* for compiler */ |
| char *resolved_fn = resolved_fn; |
| |
| in = stdin; |
| out = stdout; |
| if (fn != NULL) { |
| struct stat st; |
| int fd; |
| |
| resolved_fn = xmalloc_follow_symlinks(fn); |
| if (resolved_fn == NULL) |
| bb_simple_perror_msg_and_die(fn); |
| in = xfopen_for_read(resolved_fn); |
| xfstat(fileno(in), &st, resolved_fn); |
| |
| temp_fn = xasprintf("%sXXXXXX", resolved_fn); |
| fd = xmkstemp(temp_fn); |
| if (fchmod(fd, st.st_mode) == -1) |
| bb_simple_perror_msg_and_die(temp_fn); |
| fchown(fd, st.st_uid, st.st_gid); |
| |
| out = xfdopen_for_write(fd); |
| } |
| |
| while ((ch = fgetc(in)) != EOF) { |
| if (ch == '\r') |
| continue; |
| if (ch == '\n') |
| if (conv_type == CT_UNIX2DOS) |
| fputc('\r', out); |
| fputc(ch, 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 */ |
| if (ENABLE_DOS2UNIX |
| && (!ENABLE_UNIX2DOS || applet_name[0] == 'd') |
| ) { |
| conv_type = CT_DOS2UNIX; |
| } else { |
| conv_type = CT_UNIX2DOS; |
| } |
| |
| /* -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; |
| } |