/*
- misc.cc -- implement various stuff
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
-
- (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
Jan Nieuwenhuizen <janneke@gnu.org>
+
+ LilyPond 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 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond 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 LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "misc.hh"
+#include "warn.hh"
/*
Return the 2-log, rounded down
return result;
}
+vsize
+utf8_char_len (char current)
+{
+ vsize char_len = 1;
+
+ // U+10000 - U+10FFFF
+ if ((current & 0xF0) == 0xF0)
+ char_len = 4;
+ // U+0800 - U+FFFF
+ else if ((current & 0xE0) == 0xE0)
+ char_len = 3;
+ // U+0080 - U+07FF
+ else if ((current & 0xC0) == 0xC0)
+ char_len = 2;
+ else if (current & 0x80)
+ programming_error ("invalid UTF-8 string");
+
+ return char_len;
+}