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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// **************************************************************************</span>
<a name="l00002"></a>00002 <span class="comment">// * This file is part of the zen::Xml project. It is distributed under the *</span>
<a name="l00003"></a>00003 <span class="comment">// * Boost Software License: http://www.boost.org/LICENSE_1_0.txt *</span>
<a name="l00004"></a>00004 <span class="comment">// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved *</span>
<a name="l00005"></a>00005 <span class="comment">// **************************************************************************</span>
<a name="l00006"></a>00006
<a name="l00007"></a>00007 <span class="preprocessor">#ifndef ZEN_XML_CONVERT_TEXT_HEADER_018727339083427097434</span>
<a name="l00008"></a>00008 <span class="preprocessor"></span><span class="preprocessor">#define ZEN_XML_CONVERT_TEXT_HEADER_018727339083427097434</span>
<a name="l00009"></a>00009 <span class="preprocessor"></span>
<a name="l00010"></a>00010 <span class="preprocessor">#include <zen/utf.h></span>
<a name="l00011"></a>00011 <span class="preprocessor">#include <zen/string_tools.h></span>
<a name="l00012"></a>00012
<a name="l00013"></a>00013 <span class="keyword">namespace </span>zen
<a name="l00014"></a>00014 {
<a name="l00061"></a>00061
<a name="l00062"></a>00062
<a name="l00067"></a>00067 <span class="keyword">template</span> <<span class="keyword">class</span> T> <span class="keywordtype">bool</span> <a class="code" href="namespacezen.html#acaf85ab94b61882f957afcd355386bff" title="Convert text to user data - used by XML elements and attributes.">readText</a>(<span class="keyword">const</span> std::string& input, T& value);
<a name="l00069"></a>00069
<a name="l00073"></a>00073 <span class="keyword">template</span> <<span class="keyword">class</span> T> <span class="keywordtype">void</span> <a class="code" href="namespacezen.html#a2ce2998296871fc2f4718ceceb22a23f" title="Convert user data into text - used by XML elements and attributes.">writeText</a>(<span class="keyword">const</span> T& value, std::string& output);
<a name="l00074"></a>00074
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <span class="comment">/* Different classes of data types:</span>
<a name="l00077"></a>00077 <span class="comment"></span>
<a name="l00078"></a>00078 <span class="comment">-----------------------------</span>
<a name="l00079"></a>00079 <span class="comment">| structured | readStruc/writeStruc - e.g. string-convertible types, STL containers, std::pair, structured user types</span>
<a name="l00080"></a>00080 <span class="comment">| ------------------------- |</span>
<a name="l00081"></a>00081 <span class="comment">| | to-string-convertible | | readText/writeText - e.g. string-like types, all built-in arithmetic numbers, bool</span>
<a name="l00082"></a>00082 <span class="comment">| | --------------- | |</span>
<a name="l00083"></a>00083 <span class="comment">| | | string-like | | | utfCvrtTo - e.g. std::string, wchar_t*, char[], wchar_t, wxString, MyStringClass, ...</span>
<a name="l00084"></a>00084 <span class="comment">| | --------------- | |</span>
<a name="l00085"></a>00085 <span class="comment">| ------------------------- |</span>
<a name="l00086"></a>00086 <span class="comment">-----------------------------</span>
<a name="l00087"></a>00087 <span class="comment">*/</span>
<a name="l00088"></a>00088
<a name="l00089"></a>00089
<a name="l00090"></a>00090
<a name="l00091"></a>00091
<a name="l00092"></a>00092
<a name="l00093"></a>00093
<a name="l00094"></a>00094
<a name="l00095"></a>00095
<a name="l00096"></a>00096
<a name="l00097"></a>00097
<a name="l00098"></a>00098
<a name="l00099"></a>00099
<a name="l00100"></a>00100
<a name="l00101"></a>00101
<a name="l00102"></a>00102
<a name="l00103"></a>00103 <span class="comment">//------------------------------ implementation -------------------------------------</span>
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="comment">//Conversion from arbitrary types to text (for use with XML elements and attributes)</span>
<a name="l00106"></a>00106 <span class="keyword">enum</span> TextType
<a name="l00107"></a>00107 {
<a name="l00108"></a>00108 TEXT_TYPE_BOOL,
<a name="l00109"></a>00109 TEXT_TYPE_NUMBER,
<a name="l00110"></a>00110 TEXT_TYPE_STRING,
<a name="l00111"></a>00111 TEXT_TYPE_OTHER,
<a name="l00112"></a>00112 };
<a name="l00113"></a>00113
<a name="l00114"></a>00114 <span class="keyword">template</span> <<span class="keyword">class</span> T>
<a name="l00115"></a>00115 <span class="keyword">struct </span>GetTextType : StaticEnum<TextType,
<a name="l00116"></a>00116 IsSameType<T, bool>::value ? TEXT_TYPE_BOOL :
<a name="l00117"></a>00117 IsStringLike<T>::value ? TEXT_TYPE_STRING : <span class="comment">//string before number to correctly handle char/wchar_t -> this was an issue with Loki only!</span>
<a name="l00118"></a>00118 IsArithmetic<T>::value ? TEXT_TYPE_NUMBER : <span class="comment">//</span>
<a name="l00119"></a>00119 TEXT_TYPE_OTHER> {};
<a name="l00120"></a>00120
<a name="l00121"></a>00121 <span class="comment">//######################################################################################</span>
<a name="l00122"></a>00122
<a name="l00123"></a>00123 <span class="keyword">template</span> <<span class="keyword">class</span> T, TextType type>
<a name="l00124"></a>00124 <span class="keyword">struct </span>ConvertText;
<a name="l00125"></a>00125 <span class="comment">/* -> expected interface</span>
<a name="l00126"></a>00126 <span class="comment">{</span>
<a name="l00127"></a>00127 <span class="comment"> void writeText(const T& value, std::string& output) const;</span>
<a name="l00128"></a>00128 <span class="comment"> bool readText(const std::string& input, T& value) const;</span>
<a name="l00129"></a>00129 <span class="comment">};</span>
<a name="l00130"></a>00130 <span class="comment">*/</span>
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="comment">//partial specialization: type bool</span>
<a name="l00133"></a>00133 <span class="keyword">template</span> <<span class="keyword">class</span> T>
<a name="l00134"></a>00134 <span class="keyword">struct </span>ConvertText<T, TEXT_TYPE_BOOL>
<a name="l00135"></a>00135 {
<a name="l00136"></a>00136 <span class="keywordtype">void</span> <a class="code" href="namespacezen.html#a2ce2998296871fc2f4718ceceb22a23f" title="Convert user data into text - used by XML elements and attributes.">writeText</a>(<span class="keywordtype">bool</span> value, std::string& output)<span class="keyword"> const</span>
<a name="l00137"></a>00137 <span class="keyword"> </span>{
<a name="l00138"></a>00138 output = value ? <span class="stringliteral">"true"</span> : <span class="stringliteral">"false"</span>;
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140 <span class="keywordtype">bool</span> <a class="code" href="namespacezen.html#acaf85ab94b61882f957afcd355386bff" title="Convert text to user data - used by XML elements and attributes.">readText</a>(<span class="keyword">const</span> std::string& input, <span class="keywordtype">bool</span>& value)<span class="keyword"> const</span>
<a name="l00141"></a>00141 <span class="keyword"> </span>{
<a name="l00142"></a>00142 std::string tmp = input;
<a name="l00143"></a>00143 zen::trim(tmp);
<a name="l00144"></a>00144 <span class="keywordflow">if</span> (tmp == <span class="stringliteral">"true"</span>)
<a name="l00145"></a>00145 value = <span class="keyword">true</span>;
<a name="l00146"></a>00146 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (tmp == <span class="stringliteral">"false"</span>)
<a name="l00147"></a>00147 value = <span class="keyword">false</span>;
<a name="l00148"></a>00148 <span class="keywordflow">else</span>
<a name="l00149"></a>00149 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00150"></a>00150 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00151"></a>00151 }
<a name="l00152"></a>00152 };
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="comment">//partial specialization: handle conversion for all built-in arithmetic types!</span>
<a name="l00155"></a>00155 <span class="keyword">template</span> <<span class="keyword">class</span> T>
<a name="l00156"></a>00156 <span class="keyword">struct </span>ConvertText<T, TEXT_TYPE_NUMBER>
<a name="l00157"></a>00157 {
<a name="l00158"></a>00158 <span class="keywordtype">void</span> <a class="code" href="namespacezen.html#a2ce2998296871fc2f4718ceceb22a23f" title="Convert user data into text - used by XML elements and attributes.">writeText</a>(<span class="keyword">const</span> T& value, std::string& output)<span class="keyword"> const</span>
<a name="l00159"></a>00159 <span class="keyword"> </span>{
<a name="l00160"></a>00160 output = numberTo<std::string>(value);
<a name="l00161"></a>00161 }
<a name="l00162"></a>00162 <span class="keywordtype">bool</span> <a class="code" href="namespacezen.html#acaf85ab94b61882f957afcd355386bff" title="Convert text to user data - used by XML elements and attributes.">readText</a>(<span class="keyword">const</span> std::string& input, T& value)<span class="keyword"> const</span>
<a name="l00163"></a>00163 <span class="keyword"> </span>{
<a name="l00164"></a>00164 value = stringTo<T>(input);
<a name="l00165"></a>00165 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00166"></a>00166 }
<a name="l00167"></a>00167 };
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="comment">//partial specialization: handle conversion for all string-like types!</span>
<a name="l00170"></a>00170 <span class="keyword">template</span> <<span class="keyword">class</span> T>
<a name="l00171"></a>00171 <span class="keyword">struct </span>ConvertText<T, TEXT_TYPE_STRING>
<a name="l00172"></a>00172 {
<a name="l00173"></a>00173 <span class="keywordtype">void</span> <a class="code" href="namespacezen.html#a2ce2998296871fc2f4718ceceb22a23f" title="Convert user data into text - used by XML elements and attributes.">writeText</a>(<span class="keyword">const</span> T& value, std::string& output)<span class="keyword"> const</span>
<a name="l00174"></a>00174 <span class="keyword"> </span>{
<a name="l00175"></a>00175 output = utfCvrtTo<std::string>(value);
<a name="l00176"></a>00176 }
<a name="l00177"></a>00177 <span class="keywordtype">bool</span> <a class="code" href="namespacezen.html#acaf85ab94b61882f957afcd355386bff" title="Convert text to user data - used by XML elements and attributes.">readText</a>(<span class="keyword">const</span> std::string& input, T& value)<span class="keyword"> const</span>
<a name="l00178"></a>00178 <span class="keyword"> </span>{
<a name="l00179"></a>00179 value = utfCvrtTo<T>(input);
<a name="l00180"></a>00180 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00181"></a>00181 }
<a name="l00182"></a>00182 };
<a name="l00183"></a>00183
<a name="l00184"></a>00184
<a name="l00185"></a>00185 <span class="comment">//partial specialization: unknown type</span>
<a name="l00186"></a>00186 <span class="keyword">template</span> <<span class="keyword">class</span> T>
<a name="l00187"></a>00187 <span class="keyword">struct </span>ConvertText<T, TEXT_TYPE_OTHER>
<a name="l00188"></a>00188 {
<a name="l00189"></a>00189 <span class="comment">//###########################################################################################################################################</span>
<a name="l00190"></a>00190 assert_static(<span class="keyword">sizeof</span>(T) == -1);
<a name="l00191"></a>00191 <span class="comment">/*</span>
<a name="l00192"></a>00192 <span class="comment"> ATTENTION: The data type T is yet unknown to the zen::Xml framework!</span>
<a name="l00193"></a>00193 <span class="comment"></span>
<a name="l00194"></a>00194 <span class="comment"> Please provide a specialization for T of the following two functions in order to handle conversions to XML elements and attributes</span>
<a name="l00195"></a>00195 <span class="comment"></span>
<a name="l00196"></a>00196 <span class="comment"> template <> void zen::writeText(const T& value, std::string& output)</span>
<a name="l00197"></a>00197 <span class="comment"> template <> bool zen::readText(const std::string& input, T& value)</span>
<a name="l00198"></a>00198 <span class="comment"></span>
<a name="l00199"></a>00199 <span class="comment"> If T is structured and cannot be converted to a text representation specialize these two functions to allow at least for conversions to XML elements:</span>
<a name="l00200"></a>00200 <span class="comment"></span>
<a name="l00201"></a>00201 <span class="comment"> template <> void zen::writeStruc(const T& value, XmlElement& output)</span>
<a name="l00202"></a>00202 <span class="comment"> template <> bool zen::readStruc(const XmlElement& input, T& value)</span>
<a name="l00203"></a>00203 <span class="comment"> */</span>
<a name="l00204"></a>00204 <span class="comment">//###########################################################################################################################################</span>
<a name="l00205"></a>00205 };
<a name="l00206"></a>00206
<a name="l00207"></a>00207
<a name="l00208"></a>00208 <span class="keyword">template</span> <<span class="keyword">class</span> T> <span class="keyword">inline</span>
<a name="l00209"></a><a class="code" href="namespacezen.html#a2ce2998296871fc2f4718ceceb22a23f">00209</a> <span class="keywordtype">void</span> <a class="code" href="namespacezen.html#a2ce2998296871fc2f4718ceceb22a23f" title="Convert user data into text - used by XML elements and attributes.">writeText</a>(<span class="keyword">const</span> T& value, std::string& output)
<a name="l00210"></a>00210 {
<a name="l00211"></a>00211 ConvertText<T, GetTextType<T>::value>().<a class="code" href="namespacezen.html#a2ce2998296871fc2f4718ceceb22a23f" title="Convert user data into text - used by XML elements and attributes.">writeText</a>(value, output);
<a name="l00212"></a>00212 }
<a name="l00213"></a>00213
<a name="l00214"></a>00214
<a name="l00215"></a>00215 <span class="keyword">template</span> <<span class="keyword">class</span> T> <span class="keyword">inline</span>
<a name="l00216"></a><a class="code" href="namespacezen.html#acaf85ab94b61882f957afcd355386bff">00216</a> <span class="keywordtype">bool</span> <a class="code" href="namespacezen.html#acaf85ab94b61882f957afcd355386bff" title="Convert text to user data - used by XML elements and attributes.">readText</a>(<span class="keyword">const</span> std::string& input, T& value)
<a name="l00217"></a>00217 {
<a name="l00218"></a>00218 <span class="keywordflow">return</span> ConvertText<T, GetTextType<T>::value>().<a class="code" href="namespacezen.html#acaf85ab94b61882f957afcd355386bff" title="Convert text to user data - used by XML elements and attributes.">readText</a>(input, value);
<a name="l00219"></a>00219 }
<a name="l00220"></a>00220 }
<a name="l00221"></a>00221
<a name="l00222"></a>00222 <span class="preprocessor">#endif //ZEN_XML_CONVERT_TEXT_HEADER_018727339083427097434</span>
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