From 237ae42fc96ede945d28d9054f045b73e419d089 Mon Sep 17 00:00:00 2001 From: Glenn L McGrath Date: Sun, 3 Nov 2002 14:05:15 +0000 Subject: Abstract read and seek in unarchiving code, convert bunzip to file descriptors, support tar -j --- archival/libunarchive/archive_copy_file.c | 48 +++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 archival/libunarchive/archive_copy_file.c (limited to 'archival/libunarchive/archive_copy_file.c') diff --git a/archival/libunarchive/archive_copy_file.c b/archival/libunarchive/archive_copy_file.c new file mode 100644 index 000000000..22355ccd5 --- /dev/null +++ b/archival/libunarchive/archive_copy_file.c @@ -0,0 +1,48 @@ +/* + * 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. + */ + +#include + +#include "libbb.h" +#include "unarchive.h" + +/* Copy CHUNKSIZE bytes (or untill EOF if chunksize == -1) + * from SRC_FILE to DST_FILE. */ +extern void archive_copy_file(const archive_handle_t *archive_handle, const int dst_fd) +{ + size_t size; + char buffer[BUFSIZ]; + off_t chunksize = archive_handle->file_header->size; + + while (chunksize != 0) { + if (chunksize > BUFSIZ) { + size = BUFSIZ; + } else { + size = chunksize; + } + archive_xread_all(archive_handle, buffer, size); + + if (write(dst_fd, buffer, size) != size) { + error_msg_and_die ("Short write"); + } + + if (chunksize != -1) { + chunksize -= size; + } + } + + return; +} -- cgit v1.2.3