parses a target path

parsetargetpath.sp

public bool ParseTargetPath(const char[] key, char[] buffer, int buffer_len)
{
	/// parse something like: "root.section1.section2.section3.\\..dotsection"
	int i = strlen(key) - 1;
	while( i > 0 ) {
		/// Patch: allow keys to use dot without interfering with dot path.
		/// check if we hit a dot.
		if( key[i]=='.' ) {
			/// if we hit a dot, check if the previous char is an "escape" char.
			if( key[i-1]=='\\' )
				i--;
			else {
				i++;
				break;
			}
		} else i--;
	}
	int n;
	/// now we save the target section and then use the resulting string.
	while( key[i] != 0 && n < buffer_len ) {
		if( key[i]=='\\' ) {
			i++;
			continue;
		}
		buffer[n++] = key[i++];
	}
	return n > 0;
}