1 files changed, 97 insertions, 0 deletions
diff --git a/src/iso6937.cc b/src/iso6937.cc
new file mode 100644
index 0000000..d6c1970
--- /dev/null
+++ b/src/iso6937.cc
@@ -0,0 +1,97 @@
+/*
+    Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
+
+    This program 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.
+
+    This program 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 this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <string>
+#include <boost/optional.hpp>
+#include "iso6937_tables.h"
+#include "iso6937.h"
+
+using std::string;
+using std::cout;
+using std::wstring;
+using namespace sub;
+
+wstring
+sub::iso6937_to_utf16 (char const * s)
+{
+	if (iso6937::grave.empty ()) {
+		make_iso6937_tables ();
+	}
+	
+	wstring o;
+
+	boost::optional<unsigned char> diacritical;
+
+	while (*s != '\0') {
+		unsigned char const u = static_cast<unsigned char> (*s);
+		if (u >= 0xc1 && u <= 0xcf) {
+			diacritical = u;
+		} else if (diacritical) {
+			switch (diacritical.get ()) {
+			case 0xC1:
+				o += iso6937::grave[u];
+				break;
+			case 0xC2:
+				o += iso6937::acute[u];
+				break;
+			case 0xC3:
+				o += iso6937::circumflex[u];
+				break;
+			case 0xC4:
+				o += iso6937::tilde[u];
+				break;
+			case 0xC5:
+				o += iso6937::macron[u];
+				break;
+			case 0xC6:
+				o += iso6937::breve[u];
+				break;
+			case 0xC7:
+				o += iso6937::dot[u];
+				break;
+			case 0xC8:
+				o += iso6937::diaeresis[u];
+				break;
+			case 0xCA:
+				o += iso6937::ring[u];
+				break;
+			case 0xCB:
+				o += iso6937::cedilla[u];
+				break;
+			case 0xCD:
+				o += iso6937::double_acute[u];
+				break;
+			case 0xCE:
+				o += iso6937::ogonek[u];
+				break;
+			case 0xCF:
+				o += iso6937::caron[u];
+				break;
+			}
+
+			diacritical.reset ();
+		} else {
+			o += iso6937::main[u];
+		}
+
+		++s;
+	}
+
+	return o;
+}