Add the beginnings of a Dart wrapper for libarchive.

utils/archive/reader.h

Index: utils/archive/reader.h
diff --git a/utils/archive/reader.h b/utils/archive/reader.h
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+++ b/utils/archive/reader.h
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+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+/**
+ * This file declares request-handling functions for reading archives. Each
+ * function is called when a message is received with the corresponding request
+ * type, and posts a success or error response to the reply port.
+ *
+ * There is a close correspondence between functions here and the libarchive
+ * API. It's left up to the Dart code to present a more Darty API. As such,
+ * documentation of these functions is omitted, since it's available in the
+ * libarchive documentation.
+ */
+#ifndef DART_ARCHIVE_READER_H_
+#define DART_ARCHIVE_READER_H_
+
+#include "dart_archive.h"
+
+void archiveReadNew(Dart_Port p);
+
+void archiveReadSupportFilterAll(Dart_Port p, struct archive* a);
+
+void archiveReadSupportFilterBzip2(Dart_Port p, struct archive* a);
+
+void archiveReadSupportFilterCompress(Dart_Port p, struct archive* a);
+
+void archiveReadSupportFilterGzip(Dart_Port p, struct archive* a);
+
+void archiveReadSupportFilterLzma(Dart_Port p, struct archive* a);
+
+void archiveReadSupportFilterXz(Dart_Port p, struct archive* a);
+
+void archiveReadSupportFilterProgram(Dart_Port p, struct archive* a,
+                                     Dart_CObject* request);
+
+void archiveReadSupportFilterProgramSignature(
+    Dart_Port p, struct archive* a, Dart_CObject* request);
+
+void archiveReadSupportFormatAll(Dart_Port p, struct archive* a);
+
+void archiveReadSupportFormatAr(Dart_Port p, struct archive* a);
+
+void archiveReadSupportFormatCpio(Dart_Port p, struct archive* a);
+
+void archiveReadSupportFormatEmpty(Dart_Port p, struct archive* a);
+
+void archiveReadSupportFormatIso9660(Dart_Port p, struct archive* a);
+
+void archiveReadSupportFormatMtree(Dart_Port p, struct archive* a);
+
+void archiveReadSupportFormatRaw(Dart_Port p, struct archive* a);
+
+void archiveReadSupportFormatTar(Dart_Port p, struct archive* a);
+
+void archiveReadSupportFormatZip(Dart_Port p, struct archive* a);
+
+void archiveReadSetFilterOptions(Dart_Port p, struct archive* a,
+                                 Dart_CObject* request);
+
+void archiveReadSetFormatOptions(Dart_Port p, struct archive* a,
+                                 Dart_CObject* request);
+
+void archiveReadSetOptions(Dart_Port p, struct archive* a,
+                           Dart_CObject* request);
+
+void archiveReadOpenFilename(Dart_Port p, struct archive* a,
+                             Dart_CObject* request);
+
+void archiveReadOpenMemory(Dart_Port p, struct archive* a,
+                           Dart_CObject* request);
+
+void archiveReadNextHeader(Dart_Port p, struct archive* a);
+
+void archiveReadDataBlock(Dart_Port p, struct archive* a);
+
+void archiveReadDataSkip(Dart_Port p, struct archive* a);
+
+void archiveReadClose(Dart_Port p, struct archive* a);
+
+void archiveReadFree(Dart_Port p, struct archive* a);
+
+#endif  // DART_ARCHIVE_READER_H_