Make linguist's source viewer respect the encoding of files.

It currently loads source files as latin1, which means other encodings
are not supported.

Qt 5 change: c4f1ac0fbcd452f440aee4a3304574cb7fbca0ce

Task-number: QTBUG-27238

Change-Id: Ieb4de351d93bd5ac2939692c5c53bd681fea4386
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>

4 files changed, 13 insertions, 1 deletions

diff --git a/tools/linguist/linguist/mainwindow.cpp b/tools/linguist/linguist/mainwindow.cpp
index 210169c..285a4a2 100644
--- a/tools/linguist/linguist/mainwindow.cpp
+++ b/tools/linguist/linguist/mainwindow.cpp
@@ -1531,6 +1531,7 @@ void MainWindow::selectedMessageChanged(const QModelIndex &sortedIndex, const QM
                 QDir dir = QFileInfo(m_dataModel->srcFileName(model)).dir();
                 QString fileName = QDir::cleanPath(dir.absoluteFilePath(m->fileName()));
                 m_sourceCodeView->setSourceContext(fileName, m->lineNumber());
+                m_sourceCodeView->setCodecName(m_dataModel->model(model)->codecName());
             }
             m_errorsView->setEnabled(true);
         } else {
diff --git a/tools/linguist/linguist/messagemodel.h b/tools/linguist/linguist/messagemodel.h
index 8f620cc..3af2531 100644
--- a/tools/linguist/linguist/messagemodel.h
+++ b/tools/linguist/linguist/messagemodel.h
@@ -216,6 +216,7 @@ public:
     void setSourceLanguageAndCountry(QLocale::Language lang, QLocale::Country country);
     QLocale::Language sourceLanguage() const { return m_sourceLanguage; }
     QLocale::Country sourceCountry() const { return m_sourceCountry; }
+    QByteArray codecName() const { return m_codecName; }
 
     const QString &localizedLanguage() const { return m_localizedLanguage; }
     const QStringList &numerusForms() const { return m_numerusForms; }
diff --git a/tools/linguist/linguist/sourcecodeview.cpp b/tools/linguist/linguist/sourcecodeview.cpp
index aead207..f549d30 100644
--- a/tools/linguist/linguist/sourcecodeview.cpp
+++ b/tools/linguist/linguist/sourcecodeview.cpp
@@ -43,6 +43,7 @@
 
 #include <QtCore/QFile>
 #include <QtCore/QFileInfo>
+#include <QtCore/QTextCodec>
 #include <QtCore/QTextStream>
 
 #include <QtGui/QTextCharFormat>
@@ -79,6 +80,11 @@ void SourceCodeView::setSourceContext(const QString &fileName, const int lineNum
     }
 }
 
+void SourceCodeView::setCodecName(const QByteArray &codecName)
+{
+    m_codecName = codecName;
+}
+
 void SourceCodeView::setActivated(bool activated)
 {
     m_isActive = activated;
@@ -108,7 +114,9 @@ void SourceCodeView::showSourceCode(const QString &absFileName, const int lineNu
             appendHtml(tr("<i>File %1 not readable</i>").arg(absFileName));
             return;
         }
-        fileText = QString::fromLatin1(file.readAll());
+        const QTextCodec *codec = QTextCodec::codecForName(m_codecName);
+        const QByteArray contents = file.readAll();
+        fileText = codec ? codec->toUnicode(contents) : QString::fromUtf8(contents);
         fileHash.insert(absFileName, fileText);
     }
 
diff --git a/tools/linguist/linguist/sourcecodeview.h b/tools/linguist/linguist/sourcecodeview.h
index 41b0828..303e57c 100644
--- a/tools/linguist/linguist/sourcecodeview.h
+++ b/tools/linguist/linguist/sourcecodeview.h
@@ -54,6 +54,7 @@ class SourceCodeView : public QPlainTextEdit
 public:
     SourceCodeView(QWidget *parent = 0);
     void setSourceContext(const QString &fileName, const int lineNum);
+    void setCodecName(const QByteArray &codecName);
 
 public slots:
     void setActivated(bool activated);
@@ -65,6 +66,7 @@ private:
     QString m_fileToLoad;
     int m_lineNumToLoad;
     QString m_currentFileName;
+    QByteArray m_codecName;
 
     QHash<QString, QString> fileHash;
 };