Add SearchPath class to libpbd

git-svn-id: svn://localhost/ardour2/trunk@1974 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 154 insertions, 0 deletions

diff --git a/libs/pbd/search_path.cc b/libs/pbd/search_path.cc
new file mode 100644
index 0000000000..0546789074
--- /dev/null
+++ b/libs/pbd/search_path.cc
@@ -0,0 +1,154 @@
+/*
+    Copyright (C) 2007 Tim Mayberry 
+
+    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 <pbd/tokenizer.h>
+#include <pbd/search_path.h>
+#include <pbd/error.h>
+
+namespace {
+
+#ifdef WIN32
+const char * const path_delimiter = ";";
+#else
+const char * const path_delimiter = ":";
+#endif
+
+}
+
+namespace PBD {
+
+SearchPath::SearchPath ()
+{
+
+}
+
+SearchPath::SearchPath (const string& path)
+{
+	vector<sys::path> tmp;
+
+	if(!tokenize ( path, string(path_delimiter), std::back_inserter (tmp)))
+	{
+		// log warning(info perhaps?) that the path is empty 
+		warning << "SearchPath contains no tokens" << endmsg;
+
+	}
+
+	add_directories (tmp);
+}
+
+SearchPath::SearchPath (const vector<sys::path>& paths)
+{
+	add_directories (paths);
+}
+
+SearchPath::SearchPath (const SearchPath& other)
+	: m_dirs(other.m_dirs)
+{
+
+}
+
+void
+SearchPath::add_directory (const sys::path& directory_path)
+{
+	// test for existance and warn etc?
+	m_dirs.push_back(directory_path);
+}
+
+void
+SearchPath::add_directories (const vector<sys::path>& paths)
+{
+	for(vector<sys::path>::const_iterator i = paths.begin(); i != paths.end(); ++i) {
+		add_directory (*i);
+	}
+}
+
+const string
+SearchPath::get_search_path_string () const
+{
+	string path;
+
+	for (vector<sys::path>::const_iterator i = m_dirs.begin(); i != m_dirs.end(); ++i) {
+		path += (*i).to_string();
+		path += path_delimiter;
+	}
+
+	path = path.substr (0, path.length() - 1); // drop final separator
+
+	return path;
+}
+
+SearchPath&
+SearchPath::operator= (const SearchPath& path)
+{
+	m_dirs = path.m_dirs;
+	return *this;
+}
+
+SearchPath& 
+SearchPath::operator+= (const SearchPath& spath)
+{
+	m_dirs.insert(m_dirs.end(), spath.m_dirs.begin(), spath.m_dirs.end());
+	return *this;
+}
+
+SearchPath& 
+SearchPath::operator+= (const sys::path& directory_path)
+{
+	add_directory (directory_path);
+	return *this;
+}
+
+SearchPath& 
+SearchPath::operator+ (const sys::path& directory_path)
+{
+	add_directory (directory_path);
+	return *this;
+}
+
+SearchPath& 
+SearchPath::operator+ (const SearchPath& spath)
+{
+	// concatenate paths into new SearchPath
+	m_dirs.insert(m_dirs.end(), spath.m_dirs.begin(), spath.m_dirs.end());
+	return *this;
+}
+
+SearchPath&
+SearchPath::add_subdirectory_to_paths (const string& subdir)
+{
+	vector<sys::path> tmp;
+	string directory_path;
+
+	for (vector<sys::path>::iterator i = m_dirs.begin(); i != m_dirs.end(); ++i)
+	{
+		// should these new paths just be added to the end of 
+		// the search path rather than replace?
+		*i /= subdir;
+	}
+	
+	return *this;
+}
+	
+SearchPath&
+SearchPath::operator/= (const string& subdir)
+{
+	return add_subdirectory_to_paths (subdir);
+}
+
+} // namespace PBD