Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdevelop@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 248 insertions, 0 deletions

diff --git a/parts/diff/diffpart.cpp b/parts/diff/diffpart.cpp
new file mode 100644
index 00000000..8f04b060
--- /dev/null
+++ b/parts/diff/diffpart.cpp
@@ -0,0 +1,248 @@
+/***************************************************************************
+ *   Copyright (C) 2001 by Harald Fernengel                                *
+ *   harry@kdevelop.org                                                    *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+#include "diffpart.h"
+
+#include <sys/stat.h>
+
+#include <qwhatsthis.h>
+#include <qpopupmenu.h>
+
+#include <klocale.h>
+#include <kdevgenericfactory.h>
+#include <kaction.h>
+#include <kfiledialog.h>
+#include <kprocess.h>
+#include <kio/jobclasses.h>
+#include <kio/job.h>
+#include <kparts/part.h>
+#include <ktexteditor/editinterface.h>
+#include <kmessagebox.h>
+#include <kdebug.h>
+#include <kiconloader.h>
+
+#include "kdevcore.h"
+#include "kdevmainwindow.h"
+#include "kdevpartcontroller.h"
+#include "kdevplugininfo.h"
+
+#include "diffdlg.h"
+#include "diffwidget.h"
+
+static const KDevPluginInfo data("kdevdiff");
+
+typedef KDevGenericFactory<DiffPart> DiffFactory;
+K_EXPORT_COMPONENT_FACTORY( libkdevdiff, DiffFactory( data ) )
+
+DiffPart::DiffPart(QObject *parent, const char *name, const QStringList &)
+    : KDevDiffFrontend(&data, parent, name ? name : "DiffPart"), proc(0)
+{
+  setInstance(DiffFactory::instance());
+  setXMLFile("kdevdiff.rc");
+
+  diffWidget = new DiffWidget(this, 0, "diffWidget");
+  diffWidget->setIcon( SmallIcon("editcopy") );
+  QString nm( i18n( "Diff" ) );
+  diffWidget->setCaption( i18n( "Diff Output" ) );
+  QWhatsThis::add(diffWidget, i18n("<b>Difference viewer</b><p>Shows output of the diff format. "
+    "Can utilize every installed component that is able to show diff output. "
+    "For example if you have Kompare installed, Difference Viewer can use its graphical diff view."));
+  mainWindow()->embedOutputView( diffWidget, nm, i18n("Output of the diff command") );
+  mainWindow()->setViewAvailable( diffWidget, false );
+
+  KAction *action = new KAction( i18n("Difference Viewer..."), 0,
+	       this, SLOT(slotExecDiff()),
+	       actionCollection(), "tools_diff" );
+  action->setToolTip(i18n("Difference viewer"));
+  action->setWhatsThis(i18n("<b>Difference viewer</b><p>Shows the contents of a patch file."));
+
+  connect( core(), SIGNAL(contextMenu(QPopupMenu *, const Context *)),
+           this, SLOT(contextMenu(QPopupMenu *, const Context *)) );
+}
+
+static bool urlIsEqual(const KURL &a, const KURL &b)
+{
+  if (a.isLocalFile() && b.isLocalFile())
+  {
+    struct stat aStat, bStat;
+
+    if ((::stat(QFile::encodeName(a.fileName()), &aStat) == 0)
+        && (::stat(QFile::encodeName(b.fileName()), &bStat) == 0))
+    {
+      return (aStat.st_dev == bStat.st_dev) && (aStat.st_ino == bStat.st_ino);
+    }
+  }
+
+  return a == b;
+}
+
+static KParts::ReadWritePart* partForURL(const KURL &url, KDevPartController* pc)
+{
+  if ( !pc )
+    return 0;
+  QPtrListIterator<KParts::Part> it(*(pc->parts()));
+  for ( ; it.current(); ++it)
+  {
+    KParts::ReadWritePart *rw_part = dynamic_cast<KParts::ReadWritePart*>(it.current());
+    if ( rw_part && dynamic_cast<KTextEditor::EditInterface*>(it.current()) && urlIsEqual(url, rw_part->url()) )
+      return rw_part;
+  }
+
+  return 0;
+}
+
+void DiffPart::contextMenu( QPopupMenu* popup, const Context* context )
+{
+	if ( context->hasType( Context::EditorContext ) )
+	{
+		const EditorContext *eContext = static_cast<const EditorContext*>(context);
+		popupFile = eContext->url();
+	}
+	else if ( context->hasType( Context::FileContext ) )
+	{
+		const FileContext * fContext = static_cast<const FileContext*>( context );
+		popupFile.setPath( fContext->urls().first().fileName() );	//@fixme - assuming absolute path. is this correct?
+	}
+	else
+	{
+		return;
+	}
+
+	KParts::ReadWritePart* rw_part = partForURL( popupFile, partController() );
+	if ( !rw_part ) return;
+	
+	if ( partController()->documentState( rw_part->url() ) != Clean )
+	{
+		int id = popup->insertItem( i18n( "Difference to Disk File" ),
+							this, SLOT(localDiff()) );
+		popup->setWhatsThis(id, i18n("<b>Difference to disk file</b><p>Shows the difference between "
+			"the file contents in this editor and the file contents on disk."));
+	}
+}
+
+DiffPart::~DiffPart()
+{
+  if ( diffWidget )
+    mainWindow()->removeView( diffWidget );
+
+  delete proc;
+  delete (DiffWidget*) diffWidget;
+}
+
+void DiffPart::localDiff()
+{
+  KParts::ReadWritePart* rw_part = partForURL( popupFile, partController() );
+  if ( !rw_part )
+    return;
+
+  KTextEditor::EditInterface* editIface = dynamic_cast<KTextEditor::EditInterface*>(rw_part);
+  if ( !editIface )
+    return;
+  buffer = editIface->text().local8Bit();
+  resultBuffer = resultErr = QString::null;
+
+  delete proc;
+  proc = new KProcess();
+
+  *proc << "diff";
+  *proc << "-u" << popupFile.path() << "-";
+  proc->setWorkingDirectory( popupFile.directory() );
+
+  connect( proc, SIGNAL(processExited( KProcess* )),
+           this, SLOT(processExited( KProcess* )) );
+  connect( proc, SIGNAL(receivedStdout( KProcess*, char*, int )),
+           this, SLOT(receivedStdout( KProcess*, char*, int )) );
+  connect( proc, SIGNAL(receivedStderr( KProcess*, char*, int )),
+           this, SLOT(receivedStderr( KProcess*, char*, int )) );
+  connect( proc, SIGNAL(wroteStdin( KProcess* )),
+           this, SLOT(wroteStdin( KProcess* )) );
+
+  if ( !proc->start( KProcess::NotifyOnExit, KProcess::All ) ) {
+    KMessageBox::error( 0, i18n( "Could not invoke the \"diff\" command." ) );
+    delete proc;
+    proc = 0;
+    return;
+  }
+  proc->writeStdin( buffer.data(), buffer.length() );
+}
+
+void DiffPart::processExited( KProcess* p )
+{
+  // diff has exit status 0 and 1 for success
+  if ( p->normalExit() && ( p->exitStatus() == 0 || p->exitStatus() == 1 ) ) {
+    if ( resultBuffer.isEmpty() )
+      KMessageBox::information( 0, i18n("DiffPart: No differences found.") );
+    else
+      showDiff( resultBuffer );
+  } else {
+    KMessageBox::error( 0, i18n("Diff command failed (%1):\n").arg( p->exitStatus() ) + resultErr );
+  }
+  resultBuffer = resultErr = QString::null;
+  delete proc;
+  proc = 0;
+}
+
+void DiffPart::receivedStdout( KProcess* /* p */, char* buf, int buflen )
+{
+  resultBuffer += QString::fromLocal8Bit( buf, buflen );
+}
+
+void DiffPart::receivedStderr( KProcess* /* p */, char* buf, int buflen )
+{
+  kdDebug(9033) << "received Stderr: " << QString::fromLocal8Bit( buf, buflen ) << endl;
+  resultErr += QString::fromLocal8Bit( buf, buflen );
+}
+
+void DiffPart::wroteStdin( KProcess* p )
+{
+  buffer = 0L;
+  p->closeStdin();
+}
+
+void DiffPart::openURL( const KURL& url )
+{
+  diffWidget->slotClear();
+  diffWidget->openURL( url );
+  mainWindow()->raiseView( diffWidget );
+/*
+  DiffDlg* diffDlg = new DiffDlg( 0, "diffDlg" );
+
+  diffDlg->openURL( url );
+  diffDlg->exec();
+  delete diffDlg;
+*/
+}
+
+void DiffPart::showDiff( const QString& diff )
+{
+  diffWidget->slotClear();
+  diffWidget->setDiff( diff );
+  mainWindow()->setViewAvailable( diffWidget, true );
+  mainWindow()->raiseView( diffWidget );
+/*
+  DiffDlg* diffDlg = new DiffDlg( 0, "diffDlg" );
+
+  diffDlg->setDiff( diff );
+  diffDlg->exec();
+  delete diffDlg;
+*/
+}
+
+void DiffPart::slotExecDiff()
+{
+  KURL url = KFileDialog::getOpenURL( QString::null, QString::null, 0, i18n("Please Select Patch File") );
+
+  if ( url.isEmpty() )
+    return;
+
+  openURL( url );
+}
+
+#include "diffpart.moc"