private void ParseRule(string line)
{
// If this is an include directive, use LoadFile() again
Match m0 = m_r0.Match(line);
if (m0.Success)
{
string file = m0.Groups[1].Captures[0].Value;
// We support %H (user directory) but not %L (locale-specific dir)
if (file.Contains("%L"))
{
return;
}
file = file.Replace("%H", Settings.GetUserDir());
// Also if path is not absolute, prepend user directory
if (!Path.IsPathRooted(file))
{
file = Path.Combine(Settings.GetUserDir(), file);
}
// Prevent against include recursion
if (!m_loaded_files.Contains(file))
{
LoadFile(file);
}
return;
}
var m1 = m_r1.Match(line);
if (!m1.Success)
{
return;
}
KeySequence seq = new KeySequence();
var keysyms = m_r2.Split(m1.Groups[1].Captures[0].Value);
for (int i = 1; i < keysyms.Length - 1; ++i)
{
Key k = Key.FromKeySym(keysyms[i]);
if (k == null)
{
if (!m_invalid_keys.ContainsKey(keysyms[i]))
{
m_invalid_keys[keysyms[i]] = true;
Log.Debug($"Unknown key name <{keysyms[i]}>, ignoring sequence");
}
return; // Unknown key name! Better bail out
}
seq.Add(k);
}
// Only bother with sequences of length >= 3 that start with <Multi_key>
if (seq.Count < 3 || seq[0].VirtualKey != VK.COMPOSE)
{
return;
}
string result = m1.Groups[2].Captures[0].Value;
string description = m1.Groups.Count >= 5 ? m1.Groups[4].Captures[0].Value : "";
// Unescape \n \\ \" and more in the string output
result = Regex.Replace(result, @"\\.", m =>
{
switch (m.Value)
{
// These sequences are converted to their known value
case @"\n": return("\n");
case @"\r": return("\r");
case @"\t": return("\t");
// For all other sequences, just strip the leading \
default: return(m.Value.Substring(1));
}
});
// Try to translate the description if appropriate
int utf32 = StringToCodepoint(result);
if (utf32 >= 0)
{
string key = $"U{utf32:X04}";
string alt_desc = unicode.Char.ResourceManager.GetString(key);
if (!string.IsNullOrEmpty(alt_desc))
{
description = alt_desc;
}
}
// HACK: remove the first key (Multi_key) for now, because the
// rest of the code cannot handle it.
seq.RemoveAt(0);
InsertSequence(seq, result, utf32, description);
++Count;
}