1 files changed, 95 insertions, 0 deletions
diff --git a/server/src/xml_encode_decode.cc b/server/src/xml_encode_decode.cc
new file mode 100644
index 0000000..c5e4917
--- /dev/null
+++ b/server/src/xml_encode_decode.cc
@@ -0,0 +1,95 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            xml_encode_decode.cc
+ *
+ *  Mon Jun  9 10:19:33 CEST 2008
+ *  Copyright 2008 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of Pracro.
+ *
+ *  Pracro 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.
+ *
+ *  Pracro 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 Pracro; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "xml_encode_decode.h"
+
+char xml_map[][2][16] =
+  {
+    { "&", "&amp;" }, // & must be first
+    { "\'", "&apos;" },
+    { "\"", "&qout;" },
+    { ">", "&gt;" },
+    { "<", "&lt;" },
+    { "", "" } // End marker
+  };
+
+#define MAX_MAPS 5
+
+std::string xml_encode(std::string str)
+{
+  size_t pos;
+
+  for( int map = 0; map < MAX_MAPS; map++ ) {
+    pos = 0;
+    while( ( pos = str.find(xml_map[map][0], pos) ) != std::string::npos) {
+      str.replace(pos, strlen(xml_map[map][0]), xml_map[map][1]);
+      pos += strlen(xml_map[map][0]);
+    }
+  }
+
+  return str;
+}
+
+std::string xml_decode(std::string str)
+{
+  size_t pos;
+
+  // Traverse backwards, to handle '&' last.
+  for( int map = MAX_MAPS - 1; map > -1; map-- ) {
+    pos = 0;
+    while( ( pos = str.find(xml_map[map][1], pos) ) != std::string::npos) {
+      str.replace(pos, strlen(xml_map[map][1]), xml_map[map][0]);
+      pos += strlen(xml_map[map][1]);
+    }
+  }
+
+  return str;
+}
+
+#ifdef TEST_XML_ENCODE_DECODE
+
+int main()
+{
+  std::string in  = "&A<B>C\"D\'E";
+  printf("Input:         \"%s\"\n", in.c_str());
+
+  std::string enc = xml_encode(in);
+  printf("Encoded:       \"%s\"\n", enc.c_str());
+
+  std::string denc = xml_encode(enc);
+  printf("DoubleEncoded: \"%s\"\n", denc.c_str());
+
+  std::string dec = xml_decode(denc);
+  printf("Decoded:       \"%s\"\n", dec.c_str());
+
+  std::string ddec = xml_decode(dec);
+  printf("DoubleDecoded: \"%s\"\n", ddec.c_str());
+
+  if( in == ddec && enc == dec) return 0;
+  return 1;
+}
+
+#endif/*TEST_XML_ENCODE_DECODE*/