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<title>EO: eoState.cpp Source File</title>
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<h1>eoState.cpp</h1><div class="fragment"><pre class="fragment">00001 <span class="preprocessor">#ifdef _MSC_VER</span>
00002 <span class="preprocessor"></span><span class="preprocessor">#pragma warning(disable:4786)</span>
00003 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00004 <span class="preprocessor"></span>
00005 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
00006 <span class="preprocessor"></span><span class="preprocessor">#include &lt;config.h&gt;</span>
00007 <span class="preprocessor">#endif</span>
00008 <span class="preprocessor"></span>
00009 <span class="preprocessor">#include &lt;algorithm&gt;</span>
00010 <span class="preprocessor">#include &lt;fstream&gt;</span>
00011 <span class="preprocessor">#include &lt;sstream&gt;</span>
00012
00013 <span class="preprocessor">#include "eoState.h"</span>
00014 <span class="preprocessor">#include "eoObject.h"</span>
00015 <span class="preprocessor">#include "eoPersistent.h"</span>
00016
00017 <span class="keyword">using</span> <span class="keyword">namespace </span>std;
00018
00019
00020
00021 <span class="keywordtype">void</span> removeComment(string&amp; str, string comment)
00022 {
00023 string::size_type pos = str.find(comment);
00024
00025 <span class="keywordflow">if</span> (pos != string::npos)
00026 {
00027 str.erase(pos, str.size());
00028 }
00029 }
00030
00031 <span class="keywordtype">bool</span> is_section(<span class="keyword">const</span> string&amp; str, string&amp; name)
00032 {
00033 string::size_type pos = str.find(<span class="stringliteral">"\\section{"</span>);
00034
00035 <span class="keywordflow">if</span> (pos == string::npos)
00036 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00037 <span class="comment">//else</span>
00038
00039 string::size_type end = str.find(<span class="stringliteral">"}"</span>);
00040
00041 <span class="keywordflow">if</span> (end == string::npos)
00042 <span class="keywordflow">return</span> <span class="keyword">false</span>;
00043 <span class="comment">// else</span>
00044
00045 name = str.substr(pos + 9, end-9);
00046
00047 <span class="keywordflow">return</span> <span class="keyword">true</span>;
00048 }
00049
00050 eoState::~eoState(<span class="keywordtype">void</span>)
00051 {
00052 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i &lt; ownedObjects.size(); ++i)
00053 {
00054 <span class="keyword">delete</span> ownedObjects[i];
00055 }
00056 }
00057
<a name="l00058"></a><a class="code" href="classeo_state.html#a2">00058</a> <span class="keywordtype">void</span> <a class="code" href="classeo_state.html#a2">eoState::registerObject</a>(<a class="code" href="classeo_persistent.html">eoPersistent</a>&amp; registrant)
00059 {
00060 string name = createObjectName(dynamic_cast&lt;eoObject*&gt;(&amp;registrant));
00061
00062 pair&lt;ObjectMap::iterator,bool&gt; res = objectMap.insert(make_pair(name, &amp;registrant));
00063
00064 <span class="keywordflow">if</span> (res.second == <span class="keyword">true</span>)
00065 {
00066 creationOrder.push_back(res.first);
00067 }
00068 <span class="keywordflow">else</span>
00069 {
00070 <span class="keywordflow">throw</span> logic_error(<span class="stringliteral">"Interval error: object already present in the state"</span>);
00071 }
00072 }
00073
<a name="l00074"></a><a class="code" href="classeo_state.html#a5">00074</a> <span class="keywordtype">void</span> <a class="code" href="classeo_state.html#a5">eoState::load</a>(<span class="keyword">const</span> string&amp; _filename)
00075 {
00076 ifstream is (_filename.c_str());
00077
00078 <span class="keywordflow">if</span> (!is)
00079 {
00080 string str = <span class="stringliteral">"Could not open file "</span> + _filename;
00081 <span class="keywordflow">throw</span> runtime_error(str);
00082 }
00083
00084 <a class="code" href="classeo_state.html#a5">load</a>(is);
00085 }
00086
<a name="l00087"></a><a class="code" href="classeo_state.html#a6">00087</a> <span class="keywordtype">void</span> <a class="code" href="classeo_state.html#a5">eoState::load</a>(std::istream&amp; is)
00088 {
00089 string str;
00090 string name;
00091
00092 getline(is, str);
00093
00094 <span class="keywordflow">if</span> (is.fail())
00095 {
00096 string str = <span class="stringliteral">"Error while reading stream"</span>;
00097 <span class="keywordflow">throw</span> runtime_error(str);
00098 }
00099
00100 <span class="keywordflow">while</span>(! is.eof())
00101 { <span class="comment">// parse section header</span>
00102 <span class="keywordflow">if</span> (is_section(str, name))
00103 {
00104 string fullString;
00105 ObjectMap::iterator it = objectMap.find(name);
00106
00107 <span class="keywordflow">if</span> (it == objectMap.end())
00108 { <span class="comment">// ignore</span>
00109 <span class="keywordflow">while</span> (getline(is, str))
00110 {
00111 <span class="keywordflow">if</span> (is_section(str, name))
00112 <span class="keywordflow">break</span>;
00113 }
00114 }
00115 <span class="keywordflow">else</span>
00116 {
00117
00118 <a class="code" href="classeo_persistent.html">eoPersistent</a>* object = it-&gt;second;
00119
00120 <span class="comment">// now we have the object, get lines, remove comments etc.</span>
00121
00122 string fullstring;
00123
00124 <span class="keywordflow">while</span> (getline(is, str))
00125 {
00126 <span class="keywordflow">if</span> (is.eof())
00127 <span class="keywordflow">throw</span> runtime_error(<span class="stringliteral">"No section in load file"</span>);
00128 <span class="keywordflow">if</span> (is_section(str, name))
00129 <span class="keywordflow">break</span>;
00130
00131 removeComment(str, getCommentString());
00132 fullstring += str + <span class="stringliteral">"\n"</span>;
00133 }
00134 istringstream the_stream(fullstring);
00135 object-&gt;<a class="code" href="classeo_persistent.html#a1">readFrom</a>(the_stream);
00136 }
00137 }
00138 <span class="keywordflow">else</span> <span class="comment">// if (is_section(str, name)) - what if file empty</span>
00139 {
00140 getline(is, str); <span class="comment">// try next line!</span>
00141 <span class="comment">// if (is.eof())</span>
00142 <span class="comment">// throw runtime_error("No section in load file");</span>
00143 }
00144 }
00145
00146 }
00147
<a name="l00148"></a><a class="code" href="classeo_state.html#a7">00148</a> <span class="keywordtype">void</span> <a class="code" href="classeo_state.html#a7">eoState::save</a>(<span class="keyword">const</span> string&amp; filename)<span class="keyword"> const</span>
00149 <span class="keyword"></span>{ <span class="comment">// saves in order of insertion</span>
00150 ofstream os(filename.c_str());
00151
00152 <span class="keywordflow">if</span> (!os)
00153 {
00154 string msg = <span class="stringliteral">"Could not open file: "</span> + filename + <span class="stringliteral">" for writing!"</span>;
00155 <span class="keywordflow">throw</span> runtime_error(msg);
00156 }
00157
00158 <a class="code" href="classeo_state.html#a7">save</a>(os);
00159 }
00160
<a name="l00161"></a><a class="code" href="classeo_state.html#a8">00161</a> <span class="keywordtype">void</span> <a class="code" href="classeo_state.html#a7">eoState::save</a>(std::ostream&amp; os)<span class="keyword"> const</span>
00162 <span class="keyword"></span>{ <span class="comment">// saves in order of insertion</span>
00163 <span class="keywordflow">for</span> (vector&lt;ObjectMap::iterator&gt;::const_iterator it = creationOrder.begin(); it != creationOrder.end(); ++it)
00164 {
00165 os &lt;&lt; <span class="stringliteral">"\\section{"</span> &lt;&lt; (*it)-&gt;first &lt;&lt; <span class="stringliteral">"}\n"</span>;
00166 (*it)-&gt;second-&gt;<a class="code" href="classeo_printable.html#a1">printOn</a>(os);
00167 os &lt;&lt; <span class="charliteral">'\n'</span>;
00168 }
00169 }
00170
00171 string eoState::createObjectName(<a class="code" href="classeo_object.html">eoObject</a>* obj)
00172 {
00173 <span class="keywordflow">if</span> (obj == 0)
00174 {
00175 ostringstream os;
00176 os &lt;&lt; objectMap.size();
00177 <span class="keywordflow">return</span> os.str();
00178 }
00179 <span class="comment">// else</span>
00180
00181 string name = obj-&gt;<a class="code" href="classeo_object.html#a1">className</a>();
00182 ObjectMap::const_iterator it = objectMap.find(name);
00183
00184 <span class="keywordtype">unsigned</span> count = 1;
00185 <span class="keywordflow">while</span> (it != objectMap.end())
00186 {
00187 ostringstream os;
00188 os &lt;&lt; obj-&gt;<a class="code" href="classeo_object.html#a1">className</a>().c_str() &lt;&lt; count++;
00189 name = os.str();
00190 it = objectMap.find(name);
00191 }
00192
00193 <span class="keywordflow">return</span> name;
00194 }
00195
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Thu Oct 19 05:06:38 2006 for EO by&nbsp;
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