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<hr><h1>cpl_error.cpp</h1><div class="fragment"><pre>00001 <font class="comment">/**********************************************************************</font>
00002 <font class="comment"> * $Id: cpl_error_cpp-source.html,v 1.10 2002/04/16 13:11:47 warmerda Exp $</font>
00003 <font class="comment"> *</font>
00004 <font class="comment"> * Name: cpl_error.cpp</font>
00005 <font class="comment"> * Project: CPL - Common Portability Library</font>
00006 <font class="comment"> * Purpose: Error handling functions.</font>
00007 <font class="comment"> * Author: Daniel Morissette, danmo@videotron.ca</font>
00008 <font class="comment"> *</font>
00009 <font class="comment"> **********************************************************************</font>
00010 <font class="comment"> * Copyright (c) 1998, Daniel Morissette</font>
00011 <font class="comment"> *</font>
00012 <font class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a</font>
00013 <font class="comment"> * copy of this software and associated documentation files (the "Software"),</font>
00014 <font class="comment"> * to deal in the Software without restriction, including without limitation</font>
00015 <font class="comment"> * the rights to use, copy, modify, merge, publish, distribute, sublicense,</font>
00016 <font class="comment"> * and/or sell copies of the Software, and to permit persons to whom the</font>
00017 <font class="comment"> * Software is furnished to do so, subject to the following conditions:</font>
00018 <font class="comment"> * </font>
00019 <font class="comment"> * The above copyright notice and this permission notice shall be included</font>
00020 <font class="comment"> * in all copies or substantial portions of the Software.</font>
00021 <font class="comment"> * </font>
00022 <font class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</font>
00023 <font class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</font>
00024 <font class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL</font>
00025 <font class="comment"> * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</font>
00026 <font class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING</font>
00027 <font class="comment"> * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER </font>
00028 <font class="comment"> * DEALINGS IN THE SOFTWARE.</font>
00029 <font class="comment"> **********************************************************************</font>
00030 <font class="comment"> *</font>
00031 <font class="comment"> * $Log: cpl_error_cpp-source.html,v $
00031 <font class="comment"> * Revision 1.10 2002/04/16 13:11:47 warmerda
00031 <font class="comment"> * updated
00031 <font class="comment"> *</font>
00032 <font class="comment"> * Revision 1.21 2001/12/14 19:45:17 warmerda</font>
00033 <font class="comment"> * Avoid use of errno in prototype.</font>
00034 <font class="comment"> *</font>
00035 <font class="comment"> * Revision 1.20 2001/11/27 17:01:06 warmerda</font>
00036 <font class="comment"> * added timestamp to debug messages</font>
00037 <font class="comment"> *</font>
00038 <font class="comment"> * Revision 1.19 2001/11/15 16:11:08 warmerda</font>
00039 <font class="comment"> * use vsnprintf() for debug calls if it is available</font>
00040 <font class="comment"> *</font>
00041 <font class="comment"> * Revision 1.18 2001/11/02 22:07:58 warmerda</font>
00042 <font class="comment"> * added logging error handler</font>
00043 <font class="comment"> *</font>
00044 <font class="comment"> * Revision 1.17 2001/07/18 04:00:49 warmerda</font>
00045 <font class="comment"> * added CPL_CVSID</font>
00046 <font class="comment"> *</font>
00047 <font class="comment"> * Revision 1.16 2001/02/15 16:30:57 warmerda</font>
00048 <font class="comment"> * fixed initialization of fpLog</font>
00049 <font class="comment"> *</font>
00050 <font class="comment"> * Revision 1.15 2001/01/19 21:16:41 warmerda</font>
00051 <font class="comment"> * expanded tabs</font>
00052 <font class="comment"> *</font>
00053 <font class="comment"> * Revision 1.14 2000/11/30 17:30:10 warmerda</font>
00054 <font class="comment"> * added CPLGetLastErrorType</font>
00055 <font class="comment"> *</font>
00056 <font class="comment"> * Revision 1.13 2000/03/31 14:37:48 warmerda</font>
00057 <font class="comment"> * only use vsnprintf where available</font>
00058 <font class="comment"> *</font>
00059 <font class="comment"> * Revision 1.12 2000/03/31 14:11:55 warmerda</font>
00060 <font class="comment"> * added CPLErrorV</font>
00061 <font class="comment"> *</font>
00062 <font class="comment"> * Revision 1.11 2000/01/10 17:35:45 warmerda</font>
00063 <font class="comment"> * added push down stack of error handlers</font>
00064 <font class="comment"> *</font>
00065 <font class="comment"> * Revision 1.10 1999/11/23 04:16:56 danmo</font>
00066 <font class="comment"> * Fixed var. initialization that failed to compile as C</font>
00067 <font class="comment"> *</font>
00068 <font class="comment"> * Revision 1.9 1999/09/03 17:03:45 warmerda</font>
00069 <font class="comment"> * Completed partial help line.</font>
00070 <font class="comment"> *</font>
00071 <font class="comment"> * Revision 1.8 1999/07/23 14:27:47 warmerda</font>
00072 <font class="comment"> * CPLSetErrorHandler returns old handler</font>
00073 <font class="comment"> *</font>
00074 <font class="comment"> * Revision 1.7 1999/06/27 16:50:52 warmerda</font>
00075 <font class="comment"> * added support for CPL_DEBUG and CPL_LOG variables</font>
00076 <font class="comment"> *</font>
00077 <font class="comment"> * Revision 1.6 1999/06/26 02:46:11 warmerda</font>
00078 <font class="comment"> * Fixed initialization of debug messages.</font>
00079 <font class="comment"> *</font>
00080 <font class="comment"> * Revision 1.5 1999/05/20 14:59:05 warmerda</font>
00081 <font class="comment"> * added CPLDebug()</font>
00082 <font class="comment"> *</font>
00083 <font class="comment"> * Revision 1.4 1999/05/20 02:54:38 warmerda</font>
00084 <font class="comment"> * Added API documentation</font>
00085 <font class="comment"> *</font>
00086 <font class="comment"> * Revision 1.3 1998/12/15 19:02:27 warmerda</font>
00087 <font class="comment"> * Avoid use of errno as a variable</font>
00088 <font class="comment"> *</font>
00089 <font class="comment"> * Revision 1.2 1998/12/06 02:52:52 warmerda</font>
00090 <font class="comment"> * Implement assert support</font>
00091 <font class="comment"> *</font>
00092 <font class="comment"> * Revision 1.1 1998/12/03 18:26:02 warmerda</font>
00093 <font class="comment"> * New</font>
00094 <font class="comment"> *</font>
00095 <font class="comment"> **********************************************************************/</font>
00096
00097 <font class="preprocessor">#include "<a class="code" href="cpl_error_h.html">cpl_error.h</a>"</font>
00098 <font class="preprocessor">#include "<a class="code" href="cpl_vsi_h.html">cpl_vsi.h</a>"</font>
00099
00100 <font class="preprocessor">#define TIMESTAMP_DEBUG</font>
00101 <font class="preprocessor"></font><font class="preprocessor">#ifdef TIMESTAMP_DEBUG</font>
00102 <font class="preprocessor"></font><font class="preprocessor">#include <time.h></font>
00103 <font class="preprocessor">#endif</font>
00104 <font class="preprocessor"></font>
00105 CPL_CVSID(<font class="stringliteral">"$Id: cpl_error_cpp-source.html,v 1.10 2002/04/16 13:11:47 warmerda Exp $"</font>);
00106
00107 <font class="comment">/* static buffer to store the last error message. We'll assume that error</font>
00108 <font class="comment"> * messages cannot be longer than 2000 chars... which is quite reasonable</font>
00109 <font class="comment"> * (that's 25 lines of 80 chars!!!)</font>
00110 <font class="comment"> */</font>
00111 <font class="keyword">static</font> <font class="keywordtype">char</font> gszCPLLastErrMsg[2000] = <font class="stringliteral">""</font>;
00112 <font class="keyword">static</font> <font class="keywordtype">int</font> gnCPLLastErrNo = 0;
00113 <font class="keyword">static</font> CPLErr geCPLLastErrType = CE_None;
00114
00115 <font class="keyword">static</font> CPLErrorHandler gpfnCPLErrorHandler = CPLDefaultErrorHandler;
00116
00117 <font class="keyword">typedef</font> <font class="keyword">struct </font>errHandler
00118 {
00119 <font class="keyword">struct </font>errHandler *psNext;
00120 CPLErrorHandler pfnHandler;
00121 } CPLErrorHandlerNode;
00122
00123 <font class="keyword">static</font> CPLErrorHandlerNode * psHandlerStack = NULL;
00124
00125 <font class="comment">/**********************************************************************</font>
00126 <font class="comment"> * CPLError()</font>
00127 <font class="comment"> **********************************************************************/</font>
00128
00161 <font class="keywordtype">void</font> <a class="code" href="cpl_error_h.html#a17">CPLError</a>(CPLErr eErrClass, <font class="keywordtype">int</font> err_no, <font class="keyword">const</font> <font class="keywordtype">char</font> *fmt, ...)<font class="keyword"></font>
00162 <font class="keyword"></font>{
00163 va_list args;
00164
00165 <font class="comment">/* Expand the error message </font>
00166 <font class="comment"> */</font>
00167 va_start(args, fmt);
00168 CPLErrorV( eErrClass, err_no, fmt, args );
00169 va_end(args);
00170 }
00171
00172 <font class="comment">/************************************************************************/</font>
00173 <font class="comment">/* CPLErrorV() */</font>
00174 <font class="comment">/************************************************************************/</font>
00175
00176 <font class="keywordtype">void</font> CPLErrorV(CPLErr eErrClass, <font class="keywordtype">int</font> err_no, <font class="keyword">const</font> <font class="keywordtype">char</font> *fmt, va_list args )<font class="keyword"></font>
00177 <font class="keyword"></font>{
00178 <font class="comment">/* Expand the error message </font>
00179 <font class="comment"> */</font>
00180 <font class="preprocessor">#if defined(HAVE_VSNPRINTF)</font>
00181 <font class="preprocessor"></font> vsnprintf(gszCPLLastErrMsg, <font class="keyword">sizeof</font>(gszCPLLastErrMsg), fmt, args);
00182 <font class="preprocessor">#else</font>
00183 <font class="preprocessor"></font> vsprintf(gszCPLLastErrMsg, fmt, args);
00184 <font class="preprocessor">#endif</font>
00185 <font class="preprocessor"></font>
00186 <font class="comment">/* If the user provided his own error handling function, then call</font>
00187 <font class="comment"> * it, otherwise print the error to stderr and return.</font>
00188 <font class="comment"> */</font>
00189 gnCPLLastErrNo = err_no;
00190 geCPLLastErrType = eErrClass;
00191
00192 <font class="keywordflow">if</font>( gpfnCPLErrorHandler )
00193 gpfnCPLErrorHandler(eErrClass, err_no, gszCPLLastErrMsg);
00194
00195 <font class="keywordflow">if</font>( eErrClass == CE_Fatal )
00196 abort();
00197 }
00198
00199 <font class="comment">/************************************************************************/</font>
00200 <font class="comment">/* CPLDebug() */</font>
00201 <font class="comment">/************************************************************************/</font>
00202
00224 <font class="keywordtype">void</font> <a class="code" href="cpl_error_h.html#a29">CPLDebug</a>( <font class="keyword">const</font> <font class="keywordtype">char</font> * pszCategory, <font class="keyword">const</font> <font class="keywordtype">char</font> * pszFormat, ... )<font class="keyword"></font>
00225 <font class="keyword"></font>
00226 <font class="keyword"></font>{
00227 <font class="keywordtype">char</font> *pszMessage;
00228 va_list args;
00229 <font class="keyword">const</font> <font class="keywordtype">char</font> *pszDebug = getenv(<font class="stringliteral">"CPL_DEBUG"</font>);
00230
00231 <font class="preprocessor">#define ERROR_MAX 25000</font>
00232 <font class="preprocessor"></font>
00233 <font class="comment">/* -------------------------------------------------------------------- */</font>
00234 <font class="comment">/* Does this message pass our current criteria? */</font>
00235 <font class="comment">/* -------------------------------------------------------------------- */</font>
00236 <font class="keywordflow">if</font>( pszDebug == NULL )
00237 <font class="keywordflow">return</font>;
00238
00239 <font class="keywordflow">if</font>( !EQUAL(pszDebug,<font class="stringliteral">"ON"</font>) && !EQUAL(pszDebug,<font class="stringliteral">""</font>) )
00240 {
00241 <font class="keywordtype">int</font> i, nLen = strlen(pszCategory);
00242
00243 <font class="keywordflow">for</font>( i = 0; pszDebug[i] != <font class="charliteral">'\0'</font>; i++ )
00244 {
00245 <font class="keywordflow">if</font>( EQUALN(pszCategory,pszDebug+i,nLen) )
00246 <font class="keywordflow">break</font>;
00247 }
00248
00249 <font class="keywordflow">if</font>( pszDebug[i] == <font class="charliteral">'\0'</font> )
00250 <font class="keywordflow">return</font>;
00251 }
00252
00253 <font class="comment">/* -------------------------------------------------------------------- */</font>
00254 <font class="comment">/* Allocate a block for the error. */</font>
00255 <font class="comment">/* -------------------------------------------------------------------- */</font>
00256 pszMessage = (<font class="keywordtype">char</font> *) VSIMalloc(ERROR_MAX);
00257 <font class="keywordflow">if</font>( pszMessage == NULL )
00258 <font class="keywordflow">return</font>;
00259
00260 <font class="comment">/* -------------------------------------------------------------------- */</font>
00261 <font class="comment">/* Dal -- always log a timestamp as the first part of the line */</font>
00262 <font class="comment">/* to ensure one is looking at what one should be looking at! */</font>
00263 <font class="comment">/* -------------------------------------------------------------------- */</font>
00264
00265 <font class="preprocessor">#ifdef TIMESTAMP_DEBUG</font>
00266 <font class="preprocessor"></font> {
00267 time_t ltime;
00268
00269 time( &ltime );
00270 strcpy( pszMessage, ctime( &ltime ) );
00271
00272 <font class="comment">// On windows anyway, ctime puts a \n at the end, but I'm not </font>
00273 <font class="comment">// convinced this is standard behaviour, so we'll get rid of it</font>
00274 <font class="comment">// carefully</font>
00275
00276 <font class="keywordflow">if</font> (pszMessage[strlen(pszMessage) -1 ] == <font class="charliteral">'\n'</font>)
00277 {
00278 pszMessage[strlen(pszMessage) - 1] = 0; <font class="comment">// blow it out</font>
00279 }
00280 strcat( pszMessage, <font class="stringliteral">": "</font> );
00281 }
00282 <font class="preprocessor">#else</font>
00283 <font class="preprocessor"></font> pszMessage[0] = <font class="charliteral">'\0'</font>;
00284 <font class="preprocessor">#endif</font>
00285 <font class="preprocessor"></font>
00286 <font class="comment">/* -------------------------------------------------------------------- */</font>
00287 <font class="comment">/* Add the category. */</font>
00288 <font class="comment">/* -------------------------------------------------------------------- */</font>
00289 strcat( pszMessage, pszCategory );
00290 strcat( pszMessage, <font class="stringliteral">": "</font> );
00291
00292 <font class="comment">/* -------------------------------------------------------------------- */</font>
00293 <font class="comment">/* Format the application provided portion of the debug message. */</font>
00294 <font class="comment">/* -------------------------------------------------------------------- */</font>
00295 va_start(args, pszFormat);
00296 <font class="preprocessor">#if defined(HAVE_VSNPRINTF)</font>
00297 <font class="preprocessor"></font> vsnprintf(pszMessage+strlen(pszMessage), ERROR_MAX - strlen(pszMessage),
00298 pszFormat, args);
00299 <font class="preprocessor">#else</font>
00300 <font class="preprocessor"></font> vsprintf(pszMessage+strlen(pszMessage), pszFormat, args);
00301 <font class="preprocessor">#endif</font>
00302 <font class="preprocessor"></font> va_end(args);
00303
00304 <font class="comment">/* -------------------------------------------------------------------- */</font>
00305 <font class="comment">/* If the user provided his own error handling function, then call */</font>
00306 <font class="comment">/* it, otherwise print the error to stderr and return. */</font>
00307 <font class="comment">/* -------------------------------------------------------------------- */</font>
00308 <font class="keywordflow">if</font>( gpfnCPLErrorHandler )
00309 gpfnCPLErrorHandler(CE_Debug, CPLE_None, pszMessage);
00310
00311 VSIFree( pszMessage );
00312 }
00313
00314 <font class="comment">/**********************************************************************</font>
00315 <font class="comment"> * CPLErrorReset()</font>
00316 <font class="comment"> **********************************************************************/</font>
00317
00325 <font class="keywordtype">void</font> <a class="code" href="cpl_error_h.html#a19">CPLErrorReset</a>()<font class="keyword"></font>
00326 <font class="keyword"></font>{
00327 gnCPLLastErrNo = CPLE_None;
00328 gszCPLLastErrMsg[0] = <font class="charliteral">'\0'</font>;
00329 geCPLLastErrType = CE_None;
00330 }
00331
00332
00333 <font class="comment">/**********************************************************************</font>
00334 <font class="comment"> * CPLGetLastErrorNo()</font>
00335 <font class="comment"> **********************************************************************/</font>
00336
00346 <font class="keywordtype">int</font> <a class="code" href="cpl_error_h.html#a20">CPLGetLastErrorNo</a>()<font class="keyword"></font>
00347 <font class="keyword"></font>{
00348 <font class="keywordflow">return</font> gnCPLLastErrNo;
00349 }
00350
00351 <font class="comment">/**********************************************************************</font>
00352 <font class="comment"> * CPLGetLastErrorType()</font>
00353 <font class="comment"> **********************************************************************/</font>
00354
00364 CPLErr <a class="code" href="cpl_error_h.html#a21">CPLGetLastErrorType</a>()<font class="keyword"></font>
00365 <font class="keyword"></font>{
00366 <font class="keywordflow">return</font> geCPLLastErrType;
00367 }
00368
00369 <font class="comment">/**********************************************************************</font>
00370 <font class="comment"> * CPLGetLastErrorMsg()</font>
00371 <font class="comment"> **********************************************************************/</font>
00372
00384 <font class="keyword">const</font> <font class="keywordtype">char</font>* <a class="code" href="cpl_error_h.html#a22">CPLGetLastErrorMsg</a>()<font class="keyword"></font>
00385 <font class="keyword"></font>{
00386 <font class="keywordflow">return</font> gszCPLLastErrMsg;
00387 }
00388
00389 <font class="comment">/************************************************************************/</font>
00390 <font class="comment">/* CPLDefaultErrorHandler() */</font>
00391 <font class="comment">/************************************************************************/</font>
00392
00393 <font class="keywordtype">void</font> CPLDefaultErrorHandler( CPLErr eErrClass, <font class="keywordtype">int</font> nError,
00394 <font class="keyword">const</font> <font class="keywordtype">char</font> * pszErrorMsg )<font class="keyword"></font>
00395 <font class="keyword"></font>
00396 <font class="keyword"></font>{
00397 <font class="keyword">static</font> <font class="keywordtype">int</font> bLogInit = FALSE;
00398 <font class="keyword">static</font> FILE * fpLog = stderr;
00399
00400 <font class="keywordflow">if</font>( !bLogInit )
00401 {
00402 bLogInit = TRUE;
00403
00404 fpLog = stderr;
00405 <font class="keywordflow">if</font>( getenv( <font class="stringliteral">"CPL_LOG"</font> ) != NULL )
00406 {
00407 fpLog = fopen( getenv(<font class="stringliteral">"CPL_LOG"</font>), <font class="stringliteral">"wt"</font> );
00408 <font class="keywordflow">if</font>( fpLog == NULL )
00409 fpLog = stderr;
00410 }
00411 }
00412
00413 <font class="keywordflow">if</font>( eErrClass == CE_Debug )
00414 fprintf( fpLog, <font class="stringliteral">"%s\n"</font>, pszErrorMsg );
00415 <font class="keywordflow">else</font> <font class="keywordflow">if</font>( eErrClass == CE_Warning )
00416 fprintf( fpLog, <font class="stringliteral">"Warning %d: %s\n"</font>, nError, pszErrorMsg );
00417 <font class="keywordflow">else</font>
00418 fprintf( fpLog, <font class="stringliteral">"ERROR %d: %s\n"</font>, nError, pszErrorMsg );
00419
00420 fflush( fpLog );
00421 }
00422
00423 <font class="comment">/************************************************************************/</font>
00424 <font class="comment">/* CPLQuietErrorHandler() */</font>
00425 <font class="comment">/************************************************************************/</font>
00426
00427 <font class="keywordtype">void</font> CPLQuietErrorHandler( CPLErr eErrClass , <font class="keywordtype">int</font> nError,
00428 <font class="keyword">const</font> <font class="keywordtype">char</font> * pszErrorMsg )<font class="keyword"></font>
00429 <font class="keyword"></font>
00430 <font class="keyword"></font>{
00431 <font class="keywordflow">if</font>( eErrClass == CE_Debug )
00432 CPLDefaultErrorHandler( eErrClass, nError, pszErrorMsg );
00433 }
00434
00435 <font class="comment">/************************************************************************/</font>
00436 <font class="comment">/* CPLLoggingErrorHandler() */</font>
00437 <font class="comment">/************************************************************************/</font>
00438
00439 <font class="keywordtype">void</font> CPLLoggingErrorHandler( CPLErr eErrClass, <font class="keywordtype">int</font> nError,
00440 <font class="keyword">const</font> <font class="keywordtype">char</font> * pszErrorMsg )<font class="keyword"></font>
00441 <font class="keyword"></font>
00442 <font class="keyword"></font>{
00443 <font class="keyword">static</font> <font class="keywordtype">int</font> bLogInit = FALSE;
00444 <font class="keyword">static</font> FILE * fpLog = stderr;
00445
00446 <font class="keywordflow">if</font>( !bLogInit )
00447 {
00448 <font class="keyword">const</font> <font class="keywordtype">char</font> *cpl_log = NULL;
00449
00450 bLogInit = TRUE;
00451
00452 <font class="keywordflow">if</font>( getenv(<font class="stringliteral">"CPL_LOG"</font>) != NULL )
00453 cpl_log = getenv(<font class="stringliteral">"CPL_LOG"</font>);
00454
00455 fpLog = stderr;
00456 <font class="keywordflow">if</font>( cpl_log != NULL && EQUAL(cpl_log,<font class="stringliteral">"OFF"</font>) )
00457 {
00458 fpLog = NULL;
00459 }
00460 <font class="keywordflow">else</font> <font class="keywordflow">if</font>( cpl_log != NULL )
00461 {
00462 <font class="keywordtype">char</font> path[5000];
00463 <font class="keywordtype">int</font> i = 0;
00464
00465 strcpy( path, cpl_log );
00466
00467 <font class="keywordflow">while</font>( (fpLog = fopen( path, <font class="stringliteral">"rt"</font> )) != NULL )
00468 {
00469 fclose( fpLog );
00470
00471 sprintf( path, <font class="stringliteral">"%s_%d"</font>, cpl_log, i++ );
00472 }
00473
00474 fpLog = fopen( path, <font class="stringliteral">"wt"</font> );
00475 }
00476 }
00477
00478 <font class="keywordflow">if</font>( fpLog == NULL )
00479 <font class="keywordflow">return</font>;
00480
00481 <font class="keywordflow">if</font>( eErrClass == CE_Debug )
00482 fprintf( fpLog, <font class="stringliteral">"%s\n"</font>, pszErrorMsg );
00483 <font class="keywordflow">else</font> <font class="keywordflow">if</font>( eErrClass == CE_Warning )
00484 fprintf( fpLog, <font class="stringliteral">"Warning %d: %s\n"</font>, nError, pszErrorMsg );
00485 <font class="keywordflow">else</font>
00486 fprintf( fpLog, <font class="stringliteral">"ERROR %d: %s\n"</font>, nError, pszErrorMsg );
00487
00488 fflush( fpLog );
00489 }
00490
00491 <font class="comment">/**********************************************************************</font>
00492 <font class="comment"> * CPLSetErrorHandler()</font>
00493 <font class="comment"> **********************************************************************/</font>
00494
00524 CPLErrorHandler <a class="code" href="cpl_error_h.html#a23">CPLSetErrorHandler</a>( CPLErrorHandler pfnErrorHandler )<font class="keyword"></font>
00525 <font class="keyword"></font>{
00526 CPLErrorHandler pfnOldHandler = gpfnCPLErrorHandler;
00527
00528 gpfnCPLErrorHandler = pfnErrorHandler;
00529
00530 <font class="keywordflow">return</font> pfnOldHandler;
00531 }
00532
00533
00534
00535 <font class="comment">/************************************************************************/</font>
00536 <font class="comment">/* CPLPushErrorHandler() */</font>
00537 <font class="comment">/************************************************************************/</font>
00538
00550 <font class="keywordtype">void</font> <a class="code" href="cpl_error_h.html#a24">CPLPushErrorHandler</a>( CPLErrorHandler pfnErrorHandler )<font class="keyword"></font>
00551 <font class="keyword"></font>
00552 <font class="keyword"></font>{
00553 CPLErrorHandlerNode *psNode;
00554
00555 psNode = (CPLErrorHandlerNode *) VSIMalloc(<font class="keyword">sizeof</font>(CPLErrorHandlerNode));
00556 psNode->psNext = psHandlerStack;
00557 psNode->pfnHandler = gpfnCPLErrorHandler;
00558
00559 psHandlerStack = psNode;
00560
00561 <a class="code" href="cpl_error_h.html#a23">CPLSetErrorHandler</a>( pfnErrorHandler );
00562 }
00563
00564 <font class="comment">/************************************************************************/</font>
00565 <font class="comment">/* CPLPopErrorHandler() */</font>
00566 <font class="comment">/************************************************************************/</font>
00567
00575 <font class="keywordtype">void</font> <a class="code" href="cpl_error_h.html#a25">CPLPopErrorHandler</a>()<font class="keyword"></font>
00576 <font class="keyword"></font>
00577 <font class="keyword"></font>{
00578 <font class="keywordflow">if</font>( psHandlerStack != NULL )
00579 {
00580 CPLErrorHandlerNode *psNode = psHandlerStack;
00581
00582 psHandlerStack = psNode->psNext;
00583 <a class="code" href="cpl_error_h.html#a23">CPLSetErrorHandler</a>( psNode->pfnHandler );
00584 VSIFree( psNode );
00585 }
00586 }
00587
00588 <font class="comment">/************************************************************************/</font>
00589 <font class="comment">/* _CPLAssert() */</font>
00590 <font class="comment">/* */</font>
00591 <font class="comment">/* This function is called only when an assertion fails. */</font>
00592 <font class="comment">/************************************************************************/</font>
00593
00606 <font class="keywordtype">void</font> <a class="code" href="cpl_error_h.html#a30">_CPLAssert</a>( <font class="keyword">const</font> <font class="keywordtype">char</font> * pszExpression, <font class="keyword">const</font> <font class="keywordtype">char</font> * pszFile,
00607 <font class="keywordtype">int</font> iLine )<font class="keyword"></font>
00608 <font class="keyword"></font>
00609 <font class="keyword"></font>{
00610 <a class="code" href="cpl_error_h.html#a17">CPLError</a>( CE_Fatal, CPLE_AssertionFailed,
00611 <font class="stringliteral">"Assertion `%s' failed\n"</font>
00612 <font class="stringliteral">"in file `%s', line %d\n"</font>,
00613 pszExpression, pszFile, iLine );
00614 }
00615
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