fakevim: implement '&'

Change-Id: I64f214d27306733a2840036816366d7a204cbc89
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/fakevim/fakevimhandler.cpp

@@ -1030,6 +1030,9 @@ public:
     QList<QTextEdit::ExtraSelection> m_searchSelections;
     QTextCursor m_searchCursor;
     QString m_oldNeedle;
+    QString m_lastSubstituteFlags;
+    QRegExp m_lastSubstitutePattern;
+    QString m_lastSubstituteReplacement;
 
     bool handleExCommandHelper(const ExCommand &cmd); // Returns success.
     bool handleExPluginCommand(const ExCommand &cmd); // Handled by plugin?
@@ -2062,6 +2065,8 @@ EventResult FakeVimHandler::Private::handleCommandMode1(const Input &input)
         handleFfTt(m_semicolonKey);
         m_subsubmode = NoSubSubMode;
         finishMovement();
+    } else if (input.is('&')) {
+        handleExCommand(m_gflag ? "%s//~/&" : "s");
     } else if (input.is(':')) {
         enterExMode();
         g.commandHistory.restart();
@@ -3267,6 +3272,33 @@ void FakeVimHandler::Private::handleCommand(const QString &cmd)
 bool FakeVimHandler::Private::handleExSubstituteCommand(const ExCommand &cmd)
     // :substitute
 {
+    QString flags;
+    QRegExp pattern;
+    QString replacement;
+    int count = 0;
+
+    if (cmd.cmd.startsWith("&&")) {
+        flags = cmd.cmd.mid(2);
+        if (flags.isEmpty())
+            flags = m_lastSubstituteFlags;
+        pattern = m_lastSubstitutePattern;
+        replacement = m_lastSubstituteReplacement;
+        count = cmd.args.section(QLatin1Char(' '), 1, 1).toInt();
+    } else if (cmd.cmd.startsWith("&")) {
+        flags = cmd.cmd.mid(1);
+        if (flags.isEmpty())
+            flags = m_lastSubstituteFlags;
+        pattern = m_lastSubstitutePattern;
+        replacement = m_lastSubstituteReplacement;
+        count = cmd.args.section(QLatin1Char(' '), 1, 1).toInt();
+    } else if (cmd.matches("s", "substitute")) {
+        flags = m_lastSubstituteFlags;
+        if (flags.isEmpty())
+            flags = m_lastSubstituteFlags;
+        pattern = m_lastSubstitutePattern;
+        replacement = m_lastSubstituteReplacement;
+        count = cmd.args.section(QLatin1Char(' '), 2, 2).toInt();
+    } else {
         QString line = cmd.cmd + ' ' + cmd.args;
         line = line.trimmed();
         if (line.startsWith(_("substitute")))
@@ -3276,7 +3308,6 @@ bool FakeVimHandler::Private::handleExSubstituteCommand(const ExCommand &cmd)
             line = line.mid(1);
         else
             return false;
-
         // we have /{pattern}/{string}/[flags]  now
         if (line.isEmpty())
             return false;
@@ -3302,19 +3333,30 @@ bool FakeVimHandler::Private::handleExSubstituteCommand(const ExCommand &cmd)
             pos2 = line.size();
 
         QString needle = line.mid(1, pos1 - 1);
-    const QString replacement = line.mid(pos1 + 1, pos2 - pos1 - 1);
+        replacement = line.mid(pos1 + 1, pos2 - pos1 - 1);
-    QString flags = line.mid(pos2 + 1);
+        flags = line.mid(pos2 + 1);
 
         needle.replace('$', '\n');
         needle.replace("\\\n", "\\$");
-    QRegExp pattern(needle);
+        pattern.setPattern(needle);
+
+        m_lastSubstituteFlags = flags;
+        m_lastSubstitutePattern = pattern;
+        m_lastSubstituteReplacement = replacement;
+    }
+
+    if (count == 0)
+        count = 1;
+
     if (flags.contains('i'))
         pattern.setCaseSensitivity(Qt::CaseInsensitive);
+
+    beginEditBlock();
     const bool global = flags.contains('g');
+    for (int a = 0; a != count; ++a) {
         const Range range = cmd.range.endPos == 0 ? rangeFromCurrentLine() : cmd.range;
         const int beginLine = lineForPosition(range.beginPos);
         const int endLine = lineForPosition(range.endPos);
-    beginEditBlock();
         for (int line = endLine; line >= beginLine; --line) {
             QString origText = lineContents(line);
             QString text = origText;
@@ -3345,6 +3387,9 @@ bool FakeVimHandler::Private::handleExSubstituteCommand(const ExCommand &cmd)
             if (text != origText)
                 setLineContents(line, text);
         }
+    }
+    moveToStartOfLine();
+    setTargetColumn();
     endEditBlock();
     return true;
 }