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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=gb2312"><title>cmpp3api: buffer.h源文件</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- 制作者 Doxygen 1.5.1-p1 --><div class="tabs"> <ul> <li><a href="main.html"><span>首页</span></a></li> <li><a href="annotated.html"><span>类</span></a></li> <li id="current"><a href="files.html"><span>文件</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="files.html"><span>文件列表</span></a></li> <li><a href="globals.html"><span>文件成员</span></a></li> </ul></div><h1>buffer.h</h1><a href="buffer_8h.html">浏览该文件的文档。</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <a name="l00014"></a>00014 <span class="preprocessor">#ifndef _SMAL_BUFFER_H</span><a name="l00015"></a>00015 <span class="preprocessor"></span><span class="preprocessor">#define _SMAL_BUFFER_H</span><a name="l00016"></a>00016 <span class="preprocessor"></span><a name="l00017"></a>00017 <span class="preprocessor">#include <<a class="code" href="smal_8h.html">smal.h</a>></span><a name="l00018"></a>00018 <a name="l00019"></a><a class="code" href="class_c_buffer.html">00019</a> <span class="keyword">class </span><a class="code" href="class_c_buffer.html">CBuffer</a> {<a name="l00020"></a>00020 <span class="keyword">public</span>:<a name="l00021"></a><a class="code" href="class_c_buffer.html#bc7fac7603bbd465cdf7d25f89c60f37">00021</a> <a class="code" href="class_c_buffer.html#bc7fac7603bbd465cdf7d25f89c60f37">CBuffer</a>(<span class="keywordtype">int</span> sz = DefaultBufferSize)<a name="l00022"></a>00022 : _size(sz), m_nLen(0) {<a name="l00023"></a>00023 m_str = <span class="keyword">new</span> <span class="keywordtype">char</span>[sz];<a name="l00024"></a>00024 ZeroMemory(m_str, sz);<a name="l00025"></a>00025 }<a name="l00026"></a>00026 <a name="l00027"></a><a class="code" href="class_c_buffer.html#b5e8bcbbfc7920c3cca12094f211cea9">00027</a> <a class="code" href="class_c_buffer.html#b5e8bcbbfc7920c3cca12094f211cea9">~CBuffer</a>() {<a name="l00028"></a>00028 <span class="keyword">delete</span>[] m_str;<a name="l00029"></a>00029 m_str = NULL;<a name="l00030"></a>00030 }<a name="l00031"></a>00031 <a name="l00032"></a><a class="code" href="class_c_buffer.html#b91d23e7a529b551575fc23c5e8ff8ec">00032</a> <span class="keyword">const</span> <span class="keywordtype">char</span> * <a class="code" href="class_c_buffer.html#b91d23e7a529b551575fc23c5e8ff8ec">GetBuffer</a>() {<a name="l00033"></a>00033 <span class="keywordflow">return</span> m_str;<a name="l00034"></a>00034 }<a name="l00035"></a>00035 <a name="l00036"></a><a class="code" href="class_c_buffer.html#34a3316ad8870a2cceb904b41feb2dab">00036</a> <span class="keywordtype">int</span> <a class="code" href="class_c_buffer.html#34a3316ad8870a2cceb904b41feb2dab">GetBufLen</a>() {<a name="l00037"></a>00037 <span class="keywordflow">return</span> m_nLen;<a name="l00038"></a>00038 }<a name="l00039"></a>00039 <a name="l00043"></a><a class="code" href="class_c_buffer.html#da9bbd81706fa05bde124e2f243d8e89">00043</a> <span class="keywordtype">void</span> <a class="code" href="class_c_buffer.html#da9bbd81706fa05bde124e2f243d8e89">SetBuffer</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> nStart, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> nTotalLength, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> nCommandId, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> nSeqId, <span class="keywordtype">void</span>* pvData = NULL, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> nLen = 0) {<a name="l00044"></a>00044 <span class="keywordflow">if</span> ( (<span class="keywordtype">int</span>)nLen > (_size - 12)) {<a name="l00045"></a>00045 <span class="keyword">delete</span>[] m_str;<a name="l00046"></a>00046 m_str = NULL;<a name="l00047"></a>00047 m_str = <span class="keyword">new</span> <span class="keywordtype">char</span>[nLen + 12];<a name="l00048"></a>00048 }<a name="l00049"></a>00049 <a name="l00050"></a>00050 CopyMemory(m_str + nStart, &nTotalLength, 4);<a name="l00051"></a>00051 CopyMemory(m_str + nStart + 4, &nCommandId, 4);<a name="l00052"></a>00052 CopyMemory(m_str + nStart + 8, &nSeqId, 4);<a name="l00053"></a>00053 <span class="keywordflow">if</span> (pvData != NULL) {<a name="l00054"></a>00054 CopyMemory(m_str + nStart +12, pvData, nLen);<a name="l00055"></a>00055 }<a name="l00056"></a>00056 m_nLen = nStart + 12 + nLen;<a name="l00057"></a>00057 }<a name="l00058"></a>00058 <a name="l00063"></a><a class="code" href="class_c_buffer.html#cf437ff5117c0b4e8097e71249dbf7d9">00063</a> <span class="keywordtype">void</span> <a class="code" href="class_c_buffer.html#da9bbd81706fa05bde124e2f243d8e89">SetBuffer</a>(<a name="l00064"></a>00064 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> nStart, <a name="l00065"></a>00065 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> nTotalLength, <a name="l00066"></a>00066 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> nCommandId, <a name="l00067"></a>00067 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> nCommandStatus, <a name="l00068"></a>00068 <span class="keywordtype">int</span> nSeqId, <a name="l00069"></a>00069 <span class="keywordtype">void</span>* pvData = NULL, <a name="l00070"></a>00070 <span class="keywordtype">int</span> nLen = 0 <a name="l00071"></a>00071 ) <a name="l00072"></a>00072 {<a name="l00073"></a>00073 CopyMemory(m_str + nStart, &nTotalLength, 4);<a name="l00074"></a>00074 CopyMemory(m_str + nStart + 4, &nCommandId, 4);<a name="l00075"></a>00075 CopyMemory(m_str + nStart + 8, &nCommandStatus, 4);<a name="l00076"></a>00076 CopyMemory(m_str + nStart + 12, &nSeqId, 4);<a name="l00077"></a>00077 <span class="keywordflow">if</span> (pvData != NULL) {<a name="l00078"></a>00078 CopyMemory(m_str + nStart + 16, pvData, nLen);<a name="l00079"></a>00079 }<a name="l00080"></a>00080 m_nLen = nStart + 16 + nLen;<a name="l00081"></a>00081 }<a name="l00082"></a>00082 <a name="l00083"></a>00083 <span class="comment">// 增加一段内容.</span><a name="l00084"></a>00084 <span class="comment">// 可以是byte, word, dword,等二进制数据</span><a name="l00085"></a><a class="code" href="class_c_buffer.html#34b15d889a41f3146bc8b18ee30ae0e2">00085</a> <span class="keywordtype">void</span> <a class="code" href="class_c_buffer.html#34b15d889a41f3146bc8b18ee30ae0e2">Add</a>(<span class="keywordtype">void</span>* pvData, <span class="keywordtype">int</span> nLen) {<a name="l00086"></a>00086 <span class="comment">//增加了对pvData是否为空的判断.</span><a name="l00087"></a>00087 <span class="keywordflow">if</span> (AfxIsValidAddress(pvData, nLen, FALSE)) {<a name="l00088"></a>00088 CopyMemory(m_str + m_nLen, pvData, nLen);<a name="l00089"></a>00089 }<a name="l00090"></a>00090 <a name="l00091"></a>00091 m_nLen += nLen;<a name="l00092"></a>00092 }<a name="l00093"></a>00093 <a name="l00094"></a>00094 <span class="comment">// 以Null结尾的ASCII字符串</span><a name="l00095"></a><a class="code" href="class_c_buffer.html#47e01e90d849a3d9dee4ff67ca09df5c">00095</a> <span class="keywordtype">void</span> <a class="code" href="class_c_buffer.html#47e01e90d849a3d9dee4ff67ca09df5c">AddString</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> * pvData) {<a name="l00096"></a>00096 strcpy(m_str + m_nLen, pvData);<a name="l00097"></a>00097 m_nLen += strlen(pvData);<a name="l00098"></a>00098 m_str[m_nLen] = <span class="charliteral">'\0'</span>;<a name="l00099"></a>00099 m_nLen += 1;<a name="l00100"></a>00100 }<a name="l00101"></a>00101 <a name="l00102"></a>00102 <span class="keyword">private</span>:<a name="l00103"></a>00103 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> DefaultBufferSize = 1024;<a name="l00104"></a>00104 <a name="l00105"></a>00105 <span class="keywordtype">char</span> *m_str; <a name="l00106"></a>00106 <span class="keywordtype">int</span> m_nLen; <a name="l00107"></a>00107 <span class="keywordtype">int</span> _size; <a name="l00108"></a>00108 };<a name="l00109"></a>00109 <a name="l00110"></a>00110 <span class="preprocessor">#endif</span></pre></div><hr size="1"><address style="align: right;"><small>Generated at Sat May 19 16:03:55 2007 for cmpp3api by <a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.1-p1 </small></address></body></html>⌨️ 快捷键说明
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