[GRASS] better format module's output

Author: blazek

src/plugins/grass/qgsgrassmodule.cpp

@@ -883,11 +883,6 @@ void QgsGrassModule::readStderr()
   QgsDebugMsg( "called." );
 
   QString line;
-  QRegExp rxpercent( "GRASS_INFO_PERCENT: (\\d+)" );
-  QRegExp rxmessage( "GRASS_INFO_MESSAGE\\(\\d+,\\d+\\): (.*)" );
-  QRegExp rxwarning( "GRASS_INFO_WARNING\\(\\d+,\\d+\\): (.*)" );
-  QRegExp rxerror( "GRASS_INFO_ERROR\\(\\d+,\\d+\\): (.*)" );
-  QRegExp rxend( "GRASS_INFO_END\\(\\d+,\\d+\\)" );
 
   mProcess.setReadChannel( QProcess::StandardError );
   while ( mProcess.canReadLine() )

src/providers/grass/qgsgrass.cpp

@@ -2648,28 +2648,44 @@ void QgsGrass::sleep( int ms )
 #endif
 }
 
-QgsGrass::ModuleOutput QgsGrass::parseModuleOutput( const QString & input, QString &text, QString &html, int &percent )
+QgsGrass::ModuleOutput QgsGrass::parseModuleOutput( const QString & input, QString &text, QString &html, int &value )
 {
+  QgsDebugMsg( "input = " + input );
+#ifdef QGISDEBUG
+  QString ascii;
+  for ( int i = 0; i < input.size(); i++ )
+  {
+    int c = input.at( i ).toAscii();
+    ascii += QString().sprintf( "%2x ", c );
+  }
+  QgsDebugMsg( "ascii = " + ascii );
+#endif
+
   QRegExp rxpercent( "GRASS_INFO_PERCENT: (\\d+)" );
   QRegExp rxmessage( "GRASS_INFO_MESSAGE\\(\\d+,\\d+\\): (.*)" );
   QRegExp rxwarning( "GRASS_INFO_WARNING\\(\\d+,\\d+\\): (.*)" );
   QRegExp rxerror( "GRASS_INFO_ERROR\\(\\d+,\\d+\\): (.*)" );
   QRegExp rxend( "GRASS_INFO_END\\(\\d+,\\d+\\)" );
+  // GRASS added G_progress() which does not suport GRASS_MESSAGE_FORMAT=gui
+  // and it is printing fprintf(stderr, "%10ld\b\b\b\b\b\b\b\b\b\b", n);
+  // Ticket created https://trac.osgeo.org/grass/ticket/2751
+  QRegExp rxprogress( " +(\\d+)\\b\\b\\b\\b\\b\\b\\b\\b\\b\\b" );
 
-
+  // We return simple messages in html non formated, monospace text should be set on widget
+  // where it is used because output may be formated assuming fixed width font
   if ( input.trimmed().isEmpty() )
   {
     return OutputNone;
   }
   else if ( rxpercent.indexIn( input ) != -1 )
   {
-    percent = rxpercent.cap( 1 ).toInt();
+    value = rxpercent.cap( 1 ).toInt();
     return OutputPercent;
   }
   else if ( rxmessage.indexIn( input ) != -1 )
   {
     text = rxmessage.cap( 1 );
-    html = "<pre>" + text + "</pre>"  ;
+    html = text;
     return OutputMessage;
   }
   else if ( rxwarning.indexIn( input ) != -1 )
@@ -2690,10 +2706,15 @@ QgsGrass::ModuleOutput QgsGrass::parseModuleOutput( const QString & input, QStri
   {
     return OutputNone;
   }
+  else if ( rxprogress.indexIn( input ) != -1 )
+  {
+    value = rxprogress.cap( 1 ).toInt();
+    return OutputProgress;
+  }
   else // some plain text which cannot be parsed
   {
     text = input;
-    html = "<pre>" + text + "</pre>";
+    html = text;
     return OutputMessage;
   }
 }

src/providers/grass/qgsgrass.h

@@ -145,6 +145,7 @@ class GRASS_LIB_EXPORT QgsGrass : public QObject
     {
       OutputNone,
       OutputPercent,
+      OutputProgress, // number of items processed if total number is unknown
       OutputMessage,
       OutputWarning,
       OutputError
@@ -577,8 +578,8 @@ class GRASS_LIB_EXPORT QgsGrass : public QObject
      * @param input input string read from module stderr
      * @param text parsed text
      * @param html html formated parsed text, e.g. + icons
-     * @param percent progress 0-100 */
-    static ModuleOutput parseModuleOutput( const QString & input, QString &text, QString &html, int &percent );
+     * @param value percent 0-100 or progress as absolut number if total is unknown*/
+    static ModuleOutput parseModuleOutput( const QString & input, QString &text, QString &html, int &value );
 
   public slots:
     /** Close mapset and show warning if closing failed */

src/providers/grass/qgsgrassimport.cpp

@@ -76,27 +76,35 @@ void QgsGrassImportProgress::onReadyReadStandardError()
     {
       QgsDebugMsg( "line = '" + line + "'" );
       QString text, html;
-      int percent;
-      QgsGrass::ModuleOutput type =  QgsGrass::parseModuleOutput( line, text, html, percent );
+      int value;
+      QgsGrass::ModuleOutput type =  QgsGrass::parseModuleOutput( line, text, html, value );
       if ( type == QgsGrass::OutputPercent )
       {
         mProgressMin = 0;
         mProgressMax = 100;
-        mProgressValue = percent;
+        mProgressValue = value;
         emit progressChanged( html, mProgressHtml, mProgressMin, mProgressMax, mProgressValue );
       }
+      else if ( type == QgsGrass::OutputProgress )
+      {
+        html = tr( "Progress: %1" ).arg( value );
+        append( html );
+      }
       else if ( type == QgsGrass::OutputMessage || type == QgsGrass::OutputWarning || type == QgsGrass::OutputError )
       {
-        mProgressHtml += html;
-        QgsDebugMsg( "text = " + text );
-        emit progressChanged( html, mProgressHtml, mProgressMin, mProgressMax, mProgressValue );
+        append( html );
       }
     }
   }
 }
 
 void QgsGrassImportProgress::append( const QString & html )
 {
+  QgsDebugMsg( "html = " + html );
+  if ( !mProgressHtml.isEmpty() )
+  {
+    mProgressHtml += "<br>";
+  }
   mProgressHtml += html;
   emit progressChanged( html, mProgressHtml, mProgressMin, mProgressMax, mProgressValue );
 }