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/////////////////////////////////////////////////////////////////////////
// Copyright 2011-2021 Simon Schneegans
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
/////////////////////////////////////////////////////////////////////////
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) {
#if VALA_0_42
size_t offset;
uint8[] buff;
r = this.archive.read_data_block(out buff, out offset);
#else
size_t offset, size;
void* buff;
r = this.archive.read_data_block(out buff, out size, out offset);
#endif
if (r == Archive.Result.EOF) {
break;
}
if (r != Archive.Result.OK) {
warning(this.archive.error_string());
return false;
}
#if VALA_0_42
this.writer.write_data_block(buff, offset);
#else
this.writer.write_data_block(buff, size, offset);
#endif
}
}
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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