rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 154 insertions, 0 deletions

diff --git a/libs/ardour/audio_library.cc b/libs/ardour/audio_library.cc
new file mode 100644
index 0000000000..a35846ab29
--- /dev/null
+++ b/libs/ardour/audio_library.cc
@@ -0,0 +1,154 @@
+/*
+    Copyright (C) 2003-2006 Paul Davis
+
+    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <sstream>
+
+#include <libxml/uri.h>
+
+#include <lrdf.h>
+
+#include <glibmm/convert.h>
+
+#include <pbd/compose.h>
+
+#include <ardour/audio_library.h>
+#include <ardour/utils.h>
+#include <ardour/filesystem_paths.h>
+
+#include "i18n.h"
+
+using namespace std;
+using namespace ARDOUR;
+
+namespace {
+	const char* const sfdb_file_name = "sfdb";
+} // anonymous namespace
+
+static const char* TAG = "http://ardour.org/ontology/Tag";
+
+AudioLibrary::AudioLibrary ()
+{
+	sys::path sfdb_file_path(user_config_directory ());
+
+	sfdb_file_path /= sfdb_file_name;
+
+	src = Glib::filename_to_uri (sfdb_file_path.to_string ());
+	
+	// workaround for possible bug in raptor that crashes when saving to a
+	// non-existant file.
+	touch_file(sfdb_file_path.to_string());
+
+	lrdf_read_file(src.c_str());
+}
+
+AudioLibrary::~AudioLibrary ()
+{
+}
+
+void
+AudioLibrary::save_changes ()
+{
+	if (lrdf_export_by_source(src.c_str(), src.substr(5).c_str())) {
+		PBD::warning << string_compose(_("Could not open %1.  Audio Library not saved"), src) << endmsg;
+	}
+}
+
+void
+AudioLibrary::set_tags (string member, vector<string> tags)
+{
+	sort (tags.begin(), tags.end());
+	tags.erase (unique(tags.begin(), tags.end()), tags.end());
+	
+	const string file_uri(Glib::filename_to_uri (member));
+	
+	lrdf_remove_uri_matches (file_uri.c_str());
+	
+	for (vector<string>::iterator i = tags.begin(); i != tags.end(); ++i) {
+		lrdf_add_triple (src.c_str(), file_uri.c_str(), TAG, (*i).c_str(), lrdf_literal);
+	}
+}
+
+vector<string>
+AudioLibrary::get_tags (string member)
+{
+	vector<string> tags;
+	
+	lrdf_statement pattern;
+	pattern.subject = strdup(Glib::filename_to_uri(member).c_str());
+	pattern.predicate = (char*)TAG;
+	pattern.object = 0;
+	pattern.object_type = lrdf_literal;
+	
+	lrdf_statement* matches = lrdf_matches (&pattern);
+	free (pattern.subject);
+	
+	lrdf_statement* current = matches;
+	while (current != 0) {
+		tags.push_back (current->object);
+		
+		current = current->next;
+	}
+	
+	lrdf_free_statements (matches);
+	
+	sort (tags.begin(), tags.end());
+	
+	return tags;
+}
+
+void
+AudioLibrary::search_members_and (vector<string>& members, const vector<string> tags)
+{
+	lrdf_statement **head;
+	lrdf_statement* pattern = 0;
+	lrdf_statement* old = 0;
+	head = &pattern;
+
+	vector<string>::const_iterator i;
+	for (i = tags.begin(); i != tags.end(); ++i){
+		pattern = new lrdf_statement;
+		pattern->subject = (char*)"?";
+		pattern->predicate = (char*)TAG;
+		pattern->object = strdup((*i).c_str());
+		pattern->next = old;
+
+		old = pattern;
+	}
+
+	if (*head != 0) {
+		lrdf_uris* ulist = lrdf_match_multi(*head);
+		for (uint32_t j = 0; ulist && j < ulist->count; ++j) {
+//			cerr << "AND: " << Glib::filename_from_uri(ulist->items[j]) << endl;
+			members.push_back(Glib::filename_from_uri(ulist->items[j]));
+		}
+		lrdf_free_uris(ulist);
+
+	    sort(members.begin(), members.end());
+	    unique(members.begin(), members.end());
+	}
+
+	// memory clean up
+	pattern = *head;
+	while(pattern){
+		free(pattern->object);
+		old = pattern;
+		pattern = pattern->next;
+		delete old;
+	}
+}