1 files changed, 55 insertions, 0 deletions
diff --git a/src/include/cmap.h b/src/include/cmap.h
new file mode 100644
index 0000000..3a62da1
--- /dev/null
+++ b/src/include/cmap.h
@@ -0,0 +1,55 @@
+// -*- C++ -*-
+/* Copyright (C) 1989-2020 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff 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.
+
+groff 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, see <http://www.gnu.org/licenses/>. */
+
+#ifndef UCHAR_MAX
+#define UCHAR_MAX 255
+#endif
+
+enum cmap_builtin { CMAP_BUILTIN };
+
+class cmap {
+public:
+  cmap();
+  cmap(cmap_builtin);
+  int operator()(unsigned char) const;
+  unsigned char &operator[](unsigned char);
+
+  friend class cmap_init;
+private:
+  unsigned char v[UCHAR_MAX+1];
+};
+
+inline int cmap::operator()(unsigned char c) const
+{
+  return v[c];
+}
+
+inline unsigned char &cmap::operator[](unsigned char c)
+{
+  return v[c];
+}
+
+extern cmap cmlower;
+extern cmap cmupper;
+
+static class cmap_init {
+  static int initialised;
+public:
+  cmap_init();
+} _cmap_init;