/* 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. */ //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 */ 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; }