Add support for built-in file/url unzip/untar

This introduces new build-dependency: libarchive
(http://www.libarchive.org/)

1 files changed, 138 insertions, 0 deletions

diff --git a/libs/pbd/pbd/file_archive.h b/libs/pbd/pbd/file_archive.h
new file mode 100644
index 0000000000..ad1f85941f
--- /dev/null
+++ b/libs/pbd/pbd/file_archive.h
@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2016 Robin Gareus <robin@gareus.org>
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
+#ifndef _pbd_archive_h_
+#define _pbd_archive_h_
+
+#include <pthread.h>
+
+#include "pbd/signals.h"
+
+#ifndef LIBPBD_API
+#include "pbd/libpbd_visibility.h"
+#endif
+
+
+namespace PBD {
+
+class LIBPBD_API FileArchive
+{
+	public:
+		FileArchive (const std::string& url);
+
+		int inflate (const std::string& destdir);
+		std::vector<std::string> contents ();
+
+		//PBD::Signal2<void, size_t, size_t> progress; // TODO
+
+		struct MemPipe {
+			public:
+				MemPipe ()
+					: data (NULL)
+					, size (0)
+					, done (false)
+				{
+					pthread_mutex_init (&_lock, NULL);
+					pthread_cond_init (&_ready, NULL);
+				}
+
+				~MemPipe ()
+				{
+					lock ();
+					free (data);
+					unlock ();
+
+					pthread_mutex_destroy (&_lock);
+					pthread_cond_destroy (&_ready);
+				}
+
+				void reset ()
+				{
+					lock ();
+					free (data);
+					data = 0;
+					size = 0;
+					done = false;
+					unlock ();
+				}
+
+				void lock ()   { pthread_mutex_lock (&_lock); }
+				void unlock () { pthread_mutex_unlock (&_lock); }
+				void signal () { pthread_cond_signal (&_ready); }
+				void wait ()   { pthread_cond_wait (&_ready, &_lock); }
+
+				uint8_t  buf[8192];
+				uint8_t* data;
+				size_t   size;
+				bool     done;
+
+			private:
+				pthread_mutex_t _lock;
+				pthread_cond_t  _ready;
+		};
+
+		struct Request {
+			public:
+				Request (const std::string& u)
+				{
+					if (u.size () > 0) {
+						url = strdup (u.c_str());
+					} else {
+						url = NULL;
+					}
+				}
+
+				~Request ()
+				{
+					free (url);
+				}
+
+				bool is_remote () const
+				{
+					if (!strncmp (url, "https://", 8) || !strncmp (url, "http://", 7) || !strncmp (url, "ftp://", 6)) {
+						return true;
+					}
+					return false;
+				}
+
+				char* url;
+				MemPipe mp;
+		};
+
+	private:
+
+		int process_file ();
+		int process_url ();
+
+		std::vector<std::string> contents_url ();
+		std::vector<std::string> contents_file ();
+
+		int extract_url ();
+		int extract_file ();
+
+		int do_extract (struct archive* a);
+		std::vector<std::string> get_contents (struct archive *a);
+
+		bool is_url ();
+
+		Request   _req;
+		pthread_t _tid;
+};
+
+} /* namespace */
+#endif // _reallocpool_h_