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/////////////////////////////////////////////////////////////////////////
// Copyright (c) 2011-2016 by Simon Schneegans
//
// 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 3 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, see <http://www.gnu.org/licenses/>.
/////////////////////////////////////////////////////////////////////////
namespace GnomePie {
/////////////////////////////////////////////////////////////////////////
/// This class can be used to unpack an archive to a directory.
/////////////////////////////////////////////////////////////////////////
public class ArchiveReader : GLib.Object {
private Archive.Read archive;
private Archive.WriteDisk writer;
/////////////////////////////////////////////////////////////////////
/// Constructs a new ArchiveReader
/////////////////////////////////////////////////////////////////////
public ArchiveReader() {
this.archive = new Archive.Read();
this.archive.support_format_all();
this.archive.support_filter_all();
this.writer = new Archive.WriteDisk();
this.writer.set_options(
Archive.ExtractFlags.TIME |
Archive.ExtractFlags.PERM |
Archive.ExtractFlags.ACL |
Archive.ExtractFlags.FFLAGS
);
this.writer.set_standard_lookup();
}
/////////////////////////////////////////////////////////////////////
/// Call this once after you created the ArchiveReader. Pass the
/// path to the target archive location.
/////////////////////////////////////////////////////////////////////
public bool open(string path) {
return this.archive.open_filename(path, 10240) == Archive.Result.OK;
}
/////////////////////////////////////////////////////////////////////
/// Extracts all files from the previously opened archive.
/////////////////////////////////////////////////////////////////////
public bool extract_to(string directory) {
while (true) {
unowned Archive.Entry entry;
var r = this.archive.next_header(out entry);
if (r == Archive.Result.EOF) {
break;
}
if (r != Archive.Result.OK) {
warning(this.archive.error_string());
return false;
}
entry.set_pathname(directory + "/" + entry.pathname());
r = this.writer.write_header(entry);
if (r != Archive.Result.OK) {
warning(this.writer.error_string());
return false;
}
if (entry.size() > 0) {
while (true) {
size_t offset, size;
void *buff;
r = this.archive.read_data_block(out buff, out size, out offset);
if (r == Archive.Result.EOF) {
break;
}
if (r != Archive.Result.OK) {
warning(this.archive.error_string());
return false;
}
this.writer.write_data_block(buff, size, offset);
}
}
r = this.writer.finish_entry();
if (r != Archive.Result.OK) {
warning(this.writer.error_string());
return false;
}
}
return true;
}
/////////////////////////////////////////////////////////////////////
/// When all files have been added, close the directory again.
/////////////////////////////////////////////////////////////////////
public void close() {
this.archive.close();
this.writer.close();
}
}
}
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