1 files changed, 123 insertions, 0 deletions
diff --git a/src/utilities/archiveReader.vala b/src/utilities/archiveReader.vala
new file mode 100644
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+++ b/src/utilities/archiveReader.vala
@@ -0,0 +1,123 @@
+/////////////////////////////////////////////////////////////////////////
+// Copyright (c) 2011-2015 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();
+    }
+}
+
+}