get_prev_char

Finds the previous UTF-8 character in the string before index.

index does not have to be at the beginning of a UTF-8 character. No check is made to see if the character found is actually valid other than it starts with an appropriate byte.

Example: Utf8-handling, get_prev_char:

public static int main (string[] args) {
	string wisdom = "一石二鳥";
	int index = wisdom.length;
	unichar c;

	// Output: ``鳥二石一``
	while (wisdom.get_prev_char (ref index, out c)) {
		print (c.to_string ());
	}
	print ("\n");

	return 0;
}

valac --pkg glib-2.0 string.get_prev_char.vala

Parameters:

index	a byte offset to a unicode character encoded as UTF-8
c	the location to store the next unichar

Returns:

true if a character is found in the string, false otherwise.