Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/redirectprintf_8c_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<h1>examples/PIPS/redirectprintf/src/redirectprintf.c</h1><a href="redirectprintf_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
<a name="l00004"></a>00004 <span class="comment">/*</span>
<a name="l00005"></a>00005 <span class="comment">* ==============================================================================</span>
<a name="l00006"></a>00006 <span class="comment">* Name : redirectprintf.c</span>
<a name="l00007"></a>00007 <span class="comment">* Part of : Open C/Example code</span>
<a name="l00008"></a>00008 <span class="comment">* Description : Contained the implementation of how to redirect stdout into a file.</span>
<a name="l00009"></a>00009 <span class="comment">* Version : 1.0</span>
<a name="l00010"></a>00010 <span class="comment">*</span>
<a name="l00011"></a>00011 <span class="comment">* Copyright (c) 2007 Nokia Corporation.</span>
<a name="l00012"></a>00012 <span class="comment">* This material, including documentation and any related</span>
<a name="l00013"></a>00013 <span class="comment">* computer programs, is protected by copyright controlled by</span>
<a name="l00014"></a>00014 <span class="comment">* Nokia Corporation.</span>
<a name="l00015"></a>00015 <span class="comment">* ==============================================================================</span>
<a name="l00016"></a>00016 <span class="comment">*/</span>
<a name="l00017"></a>00017
<a name="l00018"></a>00018 <span class="comment">// system include</span>
<a name="l00019"></a>00019 <span class="preprocessor">#include <stdio.h></span>
<a name="l00020"></a>00020 <span class="comment">// GCCE specific header file</span>
<a name="l00021"></a>00021 <span class="comment">//#include <staticlibinit_gcce.h></span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="comment">// Debug message</span>
<a name="l00025"></a>00025 FILE* fpDebug = NULL;
<a name="l00026"></a>00026 <span class="keywordtype">char</span>* logFileName = <span class="stringliteral">"c:\\logs\\trace.txt"</span>;
<a name="l00027"></a>00027 <span class="keyword">const</span> <span class="keywordtype">char</span>* anotherLogFile = <span class="stringliteral">"c:\\logs\\newlog.txt"</span>;
<a name="l00028"></a>00028
<a name="l00035"></a><a class="code" href="redirectprintf_8c.html#a6e8d44137e67e28ef0de048f599289f7">00035</a> <span class="keywordtype">int</span> <a class="code" href="redirectprintf_8c.html#a6e8d44137e67e28ef0de048f599289f7">RedirectPrintf</a>(<span class="keywordtype">char</span>* aMessagePtr, ...)
<a name="l00036"></a>00036 {
<a name="l00037"></a>00037 va_list marker;
<a name="l00038"></a>00038 <span class="keywordtype">int</span> printChar;
<a name="l00039"></a>00039 <span class="keywordflow">if</span>(fpDebug == NULL)
<a name="l00040"></a>00040 {
<a name="l00041"></a>00041 fpDebug = freopen(logFileName, <span class="stringliteral">"a+"</span>, stdout);
<a name="l00042"></a>00042 }
<a name="l00043"></a>00043 <span class="keywordflow">if</span>(fpDebug != NULL)
<a name="l00044"></a>00044 {
<a name="l00045"></a>00045 va_start(marker, aMessagePtr);
<a name="l00046"></a>00046 printChar = vprintf(aMessagePtr, marker);
<a name="l00047"></a>00047 va_end(marker);
<a name="l00048"></a>00048 }
<a name="l00049"></a>00049 <span class="keywordflow">return</span> printChar;
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051
<a name="l00056"></a><a class="code" href="redirectprintf_8c.html#a840291bc02cba5474a4cb46a9b9566fe">00056</a> <span class="keywordtype">int</span> <a class="code" href="redirectprintf_8c.html#a840291bc02cba5474a4cb46a9b9566fe">main</a>(<span class="keywordtype">void</span>)
<a name="l00057"></a>00057 {
<a name="l00058"></a>00058 <span class="keywordtype">int</span> printInt = 10;
<a name="l00059"></a>00059 <span class="comment">// this will print in console</span>
<a name="l00060"></a>00060 printf(<span class="stringliteral">"Redirecting printf to - %s\n"</span>, logFileName);
<a name="l00061"></a>00061 <span class="comment">// from this statement onwards, printf statement will be redirected to file</span>
<a name="l00062"></a>00062 printf(<span class="stringliteral">"You wnt be able to see the message within the \nconsole.\n"</span>);
<a name="l00063"></a>00063 <span class="comment">// put this message first. Once RedirectPrintf statement is called, printf statement will be redirect to file.</span>
<a name="l00064"></a>00064 printf(<span class="stringliteral">"Press enter to exit."</span>);
<a name="l00065"></a>00065 <a class="code" href="redirectprintf_8c.html#a6e8d44137e67e28ef0de048f599289f7">RedirectPrintf</a>(<span class="stringliteral">"Printing something using trace.\n"</span>);
<a name="l00066"></a>00066 <span class="keywordflow">if</span>(fpDebug != NULL)
<a name="l00067"></a>00067 {
<a name="l00068"></a>00068 printf(<span class="stringliteral">"printing using printf method.\n"</span>);
<a name="l00069"></a>00069 printf(<span class="stringliteral">"Printing an integer - %d.\n"</span>, printInt);
<a name="l00070"></a>00070
<a name="l00071"></a>00071 printf(<span class="stringliteral">"Redirecting printf to another file - %s\n"</span>, anotherLogFile);
<a name="l00072"></a>00072 fpDebug = freopen(anotherLogFile, <span class="stringliteral">"a+"</span>, fpDebug);
<a name="l00073"></a>00073 <span class="keywordflow">if</span>(fpDebug != NULL)
<a name="l00074"></a>00074 {
<a name="l00075"></a>00075 printf(<span class="stringliteral">"Start redirecting printf to - %s\n"</span>, anotherLogFile);
<a name="l00076"></a>00076 printf(<span class="stringliteral">"Closing the printf stream.\n"</span>);
<a name="l00077"></a>00077 fclose(fpDebug);
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080 fflush(stdin);
<a name="l00081"></a>00081 getchar(); <span class="comment">// wait for user input before terminate</span>
<a name="l00082"></a>00082 <span class="keywordflow">return</span> 0;
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084
<a name="l00085"></a>00085
<a name="l00086"></a>00086 <span class="comment">//End of file</span>
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