Added missing file Path.cpp.

git-svn-id: http://svn.drobilla.net/lad/raul@247 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 171 insertions, 0 deletions

diff --git a/src/Path.cpp b/src/Path.cpp
new file mode 100644
index 0000000..59e18dd
--- /dev/null
+++ b/src/Path.cpp
@@ -0,0 +1,171 @@
+/* This file is part of Ingen.  Copyright (C) 2006-2007 Dave Robillard.
+ * 
+ * Ingen 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.
+ * 
+ * Ingen 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 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 St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "raul/Path.h"
+
+
+bool
+Path::is_valid(const std::basic_string<char>& path)
+{
+	if (path.length() == 0)
+		return false;
+
+	// Must start with a /
+	if (path.at(0) != '/')
+		return false;
+	
+	// Must not end with a slash unless "/"
+	if (path.length() > 1 && path.at(path.length()-1) == '/')
+		return false;
+
+	assert(path.find_last_of("/") != string::npos);
+	
+	// Double slash not allowed
+	if (path.find("//") != string::npos)
+		return false;
+
+	// All characters must be printable ASCII
+	for (size_t i=0; i < path.length(); ++i)
+		if (path.at(i) < 32 || path.at(i) > 126)
+			return false;
+
+	// Disallowed characters
+	if (       path.find(" ") != string::npos 
+			|| path.find("#") != string::npos
+			|| path.find("*") != string::npos
+			|| path.find(",") != string::npos
+			|| path.find("?") != string::npos
+			|| path.find("[") != string::npos
+			|| path.find("]") != string::npos
+			|| path.find("{") != string::npos
+			|| path.find("}") != string::npos)
+		return false;
+
+	return true;
+}
+
+
+/** Convert a string to a valid full path.
+ *
+ * This will make a best effort at turning @a str into a complete, valid
+ * Path, and will always return one.
+ */
+string
+Path::pathify(const std::basic_string<char>& str)
+{
+	string path = str;
+
+	if (path.length() == 0)
+		return "/"; // this might not be wise
+
+	// Must start with a /
+	if (path.at(0) != '/')
+		path = string("/").append(path);
+	
+	// Must not end with a slash unless "/"
+	if (path.length() > 1 && path.at(path.length()-1) == '/')
+		path = path.substr(0, path.length()-1); // chop trailing slash
+
+	assert(path.find_last_of("/") != string::npos);
+	
+	replace_invalid_chars(path, false);
+
+	assert(is_valid(path));
+	
+	return path;
+}
+
+
+/** Convert a string to a valid name (or "method" - tokens between slashes)
+ *
+ * This will strip all slashes, etc, and always return a valid name/method.
+ */
+string
+Path::nameify(const std::basic_string<char>& str)
+{
+	string name = str;
+
+	if (name.length() == 0)
+		return "."; // this might not be wise
+
+	replace_invalid_chars(name, true);
+
+	assert(is_valid(string("/") + name));
+
+	return name;
+}
+
+
+/** Replace any invalid characters in @a str with a suitable replacement.
+ *
+ * Makes a pretty name - underscores are a valid character, but this chops
+ * both spaces and underscores, uppercasing the next letter, to create
+ * uniform CamelCase names that look nice
+ */
+void
+Path::replace_invalid_chars(string& str, bool replace_slash)
+{
+	for (size_t i=0; i < str.length(); ++i) {
+		if (str[i] == ' ' || str[i] == '_') {
+			str[i+1] = std::toupper(str[i+1]); // capitalize next char
+			str = str.substr(0, i) + str.substr(i+1); // chop space/underscore
+			--i;
+		} else if (str[i] ==  '[' || str[i] ==  '{') {
+			str[i] = '(';
+		} else if (str[i] ==  ']' || str[i] ==  '}') {
+			str[i] = ')';
+		} else if (str[i] < 32 || str.at(i) > 126
+				|| str[i] ==  '#' 
+				|| str[i] ==  '*' 
+				|| str[i] ==  ',' 
+				|| str[i] ==  '?' 
+				|| (replace_slash && str[i] ==  '/')) {
+			str[i] = '.';
+		}
+	}
+
+	// Chop brackets
+	// No, ruins uniqueness (LADSPA plugins)
+	/*while (true) {
+
+		const string::size_type open  = str.find("(");
+		const string::size_type close = str.find(")");
+
+		if (open != string::npos) {
+			if (close != string::npos)
+				str.erase(open, (close - open) + 1);
+		} else {
+			break;
+		}
+
+	}*/
+}
+
+
+bool
+Path::is_child_of(const Path& parent) const
+{
+	const string parent_base = parent.base();
+	return (substr(0, parent_base.length()) == parent_base);
+}
+
+
+bool
+Path::is_parent_of(const Path& child) const
+{
+	return child.is_child_of(*this);
+}
+