Import libcds.

[SXSI/libcds.git] / src / utils / alphabet_mapper.cpp

diff --git a/src/utils/alphabet_mapper.cpp b/src/utils/alphabet_mapper.cpp
new file mode 100644 (file)
index 0000000..0d35530
--- /dev/null
+++ b/src/utils/alphabet_mapper.cpp
@@ -0,0 +1,47 @@
+/* alphabet_mapper.cpp
+ * Copyright (C) 2008, Francisco Claude, all rights reserved.
+ *
+ * static_bitsequence definition
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include <alphabet_mapper.h>
+
+alphabet_mapper::alphabet_mapper() {
+       user_count=0;
+}
+
+void alphabet_mapper::use() {
+       user_count++;
+}
+
+void alphabet_mapper::unuse() {
+       user_count--;
+       if(user_count==0)
+               delete this;
+}
+
+alphabet_mapper * alphabet_mapper::load(FILE *fp) {
+  uint rd;
+  if(fread(&rd,sizeof(uint),1,fp)!=1) return NULL;
+  fseek(fp,-1*sizeof(uint),SEEK_CUR);
+  switch(rd) {
+    case ALPHABET_MAPPER_NONE_HDR: return alphabet_mapper_none::load(fp);
+    case ALPHABET_MAPPER_CONT_HDR: return alphabet_mapper_cont::load(fp);
+  }
+  return NULL;
+}