[API break] Move all the tools in the tools directory instead of common.

The `common` name is from the time where kiwix was only one repository
for all the project (android, desktop, server...).

Now we have split the repositories and kiwix-lib is the "common" repo,
the "common" directory is somehow nonsense.

include/tools/stringTools.h

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2011-2012 Emmanuel Engelhart <kelson@kiwix.org>
+ *
+ * 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 3 of the License, or
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#ifndef KIWIX_STRINGTOOLS_H
+#define KIWIX_STRINGTOOLS_H
+
+#include <unicode/unistr.h>
+
+#include <fstream>
+#include <iomanip>
+#include <iostream>
+#include <sstream>
+#include <string>
+#include <vector>
+
+#include "pathTools.h"
+
+namespace kiwix
+{
+std::string beautifyInteger(uint64_t number);
+std::string beautifyFileSize(uint64_t number);
+void printStringInHexadecimal(const char* s);
+void printStringInHexadecimal(icu::UnicodeString s);
+void stringReplacement(std::string& str,
+                       const std::string& oldStr,
+                       const std::string& newStr);
+std::string encodeDiples(const std::string& str);
+
+std::string removeAccents(const std::string& text);
+void loadICUExternalTables();
+
+std::string urlEncode(const std::string& value, bool encodeReserved = false);
+std::string urlDecode(const std::string& value, bool component = false);
+
+std::vector<std::string> split(const std::string&, const std::string&);
+std::vector<std::string> split(const char*, const char*);
+std::vector<std::string> split(const std::string&, const char*);
+std::vector<std::string> split(const char*, const std::string&);
+
+std::string ucAll(const std::string& word);
+std::string lcAll(const std::string& word);
+std::string ucFirst(const std::string& word);
+std::string lcFirst(const std::string& word);
+std::string toTitle(const std::string& word);
+
+std::string normalize(const std::string& word);
+template<typename T>
+std::string to_string(T value)
+{
+    std::ostringstream oss;
+    oss << value;
+    return oss.str();
+}
+
+template<typename T>
+T extractFromString(const std::string& str) {
+    std::istringstream iss(str);
+    T ret;
+    iss >> ret;
+    return ret;
+}
+} //namespace kiwix
+#endif