a first version of syntax hightlighted sql input fields and sql log

src/SQLLogDock.cpp

@@ -3,6 +3,7 @@
 #include <QScrollBar>
 
 #include "sqlitedb.h"
+#include "sqlitesyntaxhighlighter.h"
 /*
  *  Constructs a sqlLogForm as a child of 'parent', with the
  *  name 'name' and widget flags set to 'f'.
@@ -64,6 +65,14 @@ void SQLLogDock::setupUi()
     userLogText->setObjectName(QString::fromUtf8("userLogText"));
     userLogText->setReadOnly(true);
 
+    QFont font;
+    font.setFamily("Courier");
+    font.setFixedPitch(true);
+    font.setPixelSize(11);
+    userLogText->setFont(font);
+
+    userSqliteHighlighter = new SQLiteSyntaxHighlighter(userLogText->document());
+
     gridLayout->addWidget(userLogText, 0, 0, 1, 1);
     logStack->addWidget(WStackPage);
     WStackPage->setLayout(gridLayout);
@@ -78,6 +87,9 @@ void SQLLogDock::setupUi()
     appLogText = new QTextEdit(WStackPage1);
     appLogText->setObjectName(QString::fromUtf8("appLogText"));
     appLogText->setReadOnly(true);
+    appLogText->setFont(font);
+
+    appSqliteHighlighter = new SQLiteSyntaxHighlighter(appLogText->document());
 
     logStack->addWidget(WStackPage1);
     vboxLayout1->addWidget(appLogText);

src/SQLLogDock.h

@@ -13,6 +13,8 @@
 #include <QtGui/QVBoxLayout>
 #include <QtGui/QWidget>
 
+class SQLiteSyntaxHighlighter;
+
 class SQLLogDock : public QDockWidget
 {
     Q_OBJECT
@@ -39,6 +41,9 @@ private:
     QVBoxLayout *vboxLayout1;
     QTextEdit *appLogText;
 
+    SQLiteSyntaxHighlighter* userSqliteHighlighter;
+    SQLiteSyntaxHighlighter* appSqliteHighlighter;
+
     void setupUi();
     void retranslateUi();
 

src/mainwindow.cpp

@@ -26,6 +26,7 @@
 #include "editform.h"
 #include "findform.h"
 #include "SQLLogDock.h"
+#include "sqlitesyntaxhighlighter.h"
 
 void MainWindow::setupUi()
 {
@@ -387,6 +388,13 @@ void MainWindow::setupUi()
     sizePolicy1.setVerticalStretch(0);
     sizePolicy1.setHeightForWidth(sqlTextEdit->sizePolicy().hasHeightForWidth());
     sqlTextEdit->setSizePolicy(sizePolicy1);
+    QFont font;
+    font.setFamily("Courier");
+    font.setFixedPitch(true);
+    font.setPixelSize(11);
+    sqlTextEdit->setFont(font);
+
+    sqliteHighlighter = new SQLiteSyntaxHighlighter(sqlTextEdit->document());
 
     vboxLayout3->addWidget(sqlTextEdit);
 

src/mainwindow.h

@@ -34,6 +34,7 @@
 class SQLLogDock;
 class editForm;
 class findForm;
+class SQLiteSyntaxHighlighter;
 
 class MainWindow : public QMainWindow
 {
@@ -126,6 +127,8 @@ private:
     QMenu *PopupMenu;
     QMenu *recentFilesMenu;
 
+    SQLiteSyntaxHighlighter* sqliteHighlighter;
+
     enum { MaxRecentFiles = 5 };
     QAction *recentFileActs[MaxRecentFiles];
     QAction *recentSeparatorAct;

src/sqlitesyntaxhighlighter.cpp

@@ -0,0 +1,82 @@
+#include "sqlitesyntaxhighlighter.h"
+
+SQLiteSyntaxHighlighter::SQLiteSyntaxHighlighter(QTextDocument *parent) :
+    QSyntaxHighlighter(parent)
+{
+    HighlightingRule rule;
+
+    keywordFormat.setForeground(Qt::darkBlue);
+    keywordFormat.setFontWeight(QFont::Bold);
+    QStringList keywordPatterns;
+    keywordPatterns
+            << "\\bREINDEX\\b" << "\\bINDEXED\\b" << "\\bINDEX\\b"
+            << "\\bDESC\\b" << "\\bESCAPE\\b" << "\\bEACH\\b"
+            << "\\bCHECK\\b" << "\\bKEY\\b" << "\\bBEFORE\\b"
+            << "\\bFOREIGN\\b" << "\\bFOR\\b" << "\\bIGNORE\\b"
+            << "\\bREGEXP\\b" << "\\bEXPLAIN\\b" << "\\bINSTEAD\\b"
+            << "\\bADD\\b" << "\\bDATABASE\\b" << "\\bAS\\b"
+            << "\\bSELECT\\b" << "\\bTABLE\\b" << "\\bLEFT\\b"
+            << "\\bTHEN\\b" << "\\bEND\\b" << "\\bDEFERRABLE\\b"
+            << "\\bELSE\\b" << "\\bEXCEPT\\b" << "\\bTRANSACTION\\b"
+            << "\\bACTION\\b" << "\\bON\\b" << "\\bNATURAL\\b"
+            << "\\bALTER\\b" << "\\bRAISE\\b" << "\\bEXCLUSIVE\\b"
+            << "\\bEXISTS\\b" << "\\bSAVEPOINT\\b" << "\\bINTERSECT\\b"
+            << "\\bTRIGGER\\b" << "\\bREFERENCES\\b" << "\\bCONSTRAINT\\b"
+            << "\\bINTO\\b" << "\\bOFFSET\\b" << "\\bOF\\b"
+            << "\\bSET\\b" << "\\bTEMPORARY\\b" << "\\bTEMP\\b"
+            << "\\bOR\\b" << "\\bUNIQUE\\b" << "\\bQUERY\\b"
+            << "\\bATTACH\\b" << "\\bHAVING\\b" << "\\bGROUP\\b"
+            << "\\bUPDATE\\b" << "\\bBEGIN\\b" << "\\bINNER\\b"
+            << "\\bRELEASE\\b" << "\\bBETWEEN\\b" << "\\bNOTNULL\\b"
+            << "\\bNOT\\b" << "\\bNO\\b" << "\\bNULL\\b"
+            << "\\bLIKE\\b" << "\\bCASCADE\\b" << "\\bASC\\b"
+            << "\\bDELETE\\b" << "\\bCASE\\b" << "\\bCOLLATE\\b"
+            << "\\bCREATE\\b" << "\\bCURRENT_DATE\\b" << "\\bDETACH\\b"
+            << "\\bIMMEDIATE\\b" << "\\bJOIN\\b" << "\\bINSERT\\b"
+            << "\\bMATCH\\b" << "\\bPLAN\\b" << "\\bANALYZE\\b"
+            << "\\bPRAGMA\\b" << "\\bABORT\\b" << "\\bVALUES\\b"
+            << "\\bVIRTUAL\\b" << "\\bLIMIT\\b" << "\\bWHEN\\b"
+            << "\\bWHERE\\b" << "\\bRENAME\\b" << "\\bAFTER\\b"
+            << "\\bREPLACE\\b" << "\\bAND\\b" << "\\bDEFAULT\\b"
+            << "\\bAUTOINCREMENT\\b" << "\\bTO\\b" << "\\bIN\\b"
+            << "\\bCAST\\b" << "\\bCOLUMN\\b" << "\\bCOMMIT\\b"
+            << "\\bCONFLICT\\b" << "\\bCROSS\\b" << "\\bCURRENT_TIMESTAMP\\b"
+            << "\\bCURRENT_TIME\\b" << "\\bPRIMARY\\b" << "\\bDEFERRED\\b"
+            << "\\bDISTINCT\\b" << "\\bIS\\b"  << "\\bDROP\\b"
+            << "\\bFAIL\\b" << "\\bFROM\\b" << "\\bFULL\\b"
+            << "\\bGLOB\\b" << "\\bBY\\b" << "\\bIF\\b"
+            << "\\bISNULL\\b" << "\\bORDER\\b" << "\\bRESTRICT\\b"
+            << "\\bOUTER\\b" << "\\bRIGHT\\b" << "\\bROLLBACK\\b"
+            << "\\bROW\\b" << "\\bUNION\\b"
+            << "\\bUSING\\b" << "\\bVACUUM\\b" << "\\bVIEW\\b"
+            << "\\bINITIALLY\\b" << "\\bALL\\b" << "\\bSELECT\\b";
+
+    foreach (const QString &pattern, keywordPatterns) {
+        rule.pattern = QRegExp(pattern);
+        rule.pattern.setCaseSensitivity(Qt::CaseInsensitive);
+        rule.format = keywordFormat;
+        highlightingRules.append(rule);
+    }
+
+    quotationFormat.setForeground(Qt::darkRed);
+    rule.pattern = QRegExp("\".*\"");
+    rule.format = quotationFormat;
+    highlightingRules.append(rule);
+
+    rule.pattern = QRegExp("'.*'");
+    rule.format = quotationFormat;
+    highlightingRules.append(rule);
+}
+
+void SQLiteSyntaxHighlighter::highlightBlock(const QString &text)
+{
+    foreach (const HighlightingRule &rule, highlightingRules) {
+        QRegExp expression(rule.pattern);
+        int index = expression.indexIn(text);
+        while (index >= 0) {
+            int length = expression.matchedLength();
+            setFormat(index, length, rule.format);
+            index = expression.indexIn(text, index + length);
+        }
+    }
+}

src/sqlitesyntaxhighlighter.h

@@ -0,0 +1,33 @@
+#ifndef SQLITESYNTAXHIGHLIGHTER_H
+#define SQLITESYNTAXHIGHLIGHTER_H
+
+#include <QSyntaxHighlighter>
+
+class SQLiteSyntaxHighlighter : public QSyntaxHighlighter
+{
+    Q_OBJECT
+public:
+    explicit SQLiteSyntaxHighlighter(QTextDocument *parent = 0);
+
+protected:
+    void highlightBlock(const QString &text);
+
+private:
+    struct HighlightingRule
+    {
+        QRegExp pattern;
+        QTextCharFormat format;
+    };
+    QVector<HighlightingRule> highlightingRules;
+
+    QRegExp commentStartExpression;
+    QRegExp commentEndExpression;
+
+    QTextCharFormat keywordFormat;
+    QTextCharFormat singleLineCommentFormat;
+    QTextCharFormat multiLineCommentFormat;
+    QTextCharFormat quotationFormat;
+    
+};
+
+#endif // SQLITESYNTAXHIGHLIGHTER_H

src/src.pro

@@ -30,7 +30,8 @@ HEADERS += \
     preferencesform.h \
     mainwindow.h \
     createtabledialog.h \
-    SQLLogDock.h
+    SQLLogDock.h \
+    sqlitesyntaxhighlighter.h
 SOURCES += \
     browsermain.cpp \
     sqlitedb.cpp \
@@ -54,7 +55,8 @@ SOURCES += \
     preferencesform.cpp \
     mainwindow.cpp \
     createtabledialog.cpp \
-    SQLLogDock.cpp
+    SQLLogDock.cpp \
+    sqlitesyntaxhighlighter.cpp
 unix { 
     UI_DIR = .ui
     MOC_DIR = .moc