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-rw-r--r--server/src/xml_encode_decode.cc95
1 files changed, 95 insertions, 0 deletions
diff --git a/server/src/xml_encode_decode.cc b/server/src/xml_encode_decode.cc
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+/* -*- 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] =
+ {
+ { "&", "&" }, // & must be first
+ { "\'", "'" },
+ { "\"", "&qout;" },
+ { ">", ">" },
+ { "<", "&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*/