FakeVim: Handle unicode mappings and properly fail on bad mapping

Task-number: QTCREATORBUG-8774
Change-Id: Ic57a01fc13a073f2b13d16daecba9e070e186779
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/fakevim/fakevim_test.cpp

@@ -65,7 +65,9 @@
 #define LINE_START "\t\t<"
 #define LINE_END ">\n"
 
-typedef QLatin1String _;
+QString _(const char *c) { return QLatin1String(c); }
+QString _(const QByteArray &c) { return QLatin1String(c); }
+QString _(const QString &c) { return c; }
 
 // Format of message after comparison fails (used by KEYS, COMMAND).
 static const QString helpFormat = _(
@@ -217,8 +219,10 @@ struct FakeVimPlugin::TestData
 
     QByteArray text() const { return editor()->toPlainText().toUtf8(); }
 
-    void doCommand(const char *cmd) { handler->handleCommand(_(cmd)); }
-    void doKeys(const char *keys) { handler->handleInput(_(keys)); }
+    void doCommand(const QString &cmd) { handler->handleCommand(cmd); }
+    void doCommand(const char *cmd) { doCommand(_(cmd)); }
+    void doKeys(const QString &keys) { handler->handleInput(keys); }
+    void doKeys(const char *keys) { doKeys(_(keys)); }
 
     void setText(const char *text)
     {
@@ -227,8 +231,11 @@ struct FakeVimPlugin::TestData
         int i = str.indexOf(X);
         if (i != -1)
             str.remove(i, 1);
+        else
+            i = 0;
         editor()->document()->setPlainText(_(str));
         setPosition(i);
+        QCOMPARE(position(), i);
     }
 
     // Simulate text completion by inserting text directly to editor widget (bypassing FakeVim).
@@ -1151,6 +1158,9 @@ void FakeVimPlugin::test_vim_search()
     KEYS("?x<CR>", X "abc" N "def" N "ghi");
     KEYS("?x<ESC>", X "abc" N "def" N "ghi");
 
+    // set wrapscan (search wraps at end of file)
+    data.doCommand("set ws");
+
     // search [count] times
     data.setText("abc" N "def" N "ghi");
     KEYS("/\\w\\{3}<CR>", "abc" N X "def" N "ghi");
@@ -1158,8 +1168,6 @@ void FakeVimPlugin::test_vim_search()
     KEYS("2N", "abc" N X "def" N "ghi");
     KEYS("2/\\w\\{3}<CR>", X "abc" N "def" N "ghi");
 
-    // set wrapscan (search wraps at end of file)
-    data.doCommand("set ws");
     data.setText("abc" N "def" N "abc" N "ghi abc jkl");
     KEYS("*", "abc" N "def" N X "abc" N "ghi abc jkl");
     KEYS("*", "abc" N "def" N "abc" N "ghi " X "abc jkl");
@@ -2215,6 +2223,18 @@ void FakeVimPlugin::test_map()
     data.setText("abc def");
     data.doCommand("imap X <c-o>:%s/def/xxx/<cr>");
     KEYS("iX", "abc xxx");
+    data.doCommand("iunmap X");
+
+    // Test mappings in UTF-8 encoding.
+    data.setText("abc" N "def");
+    data.doKeys(QString::fromUtf8(":no \xc5\xaf xiX<cr>"));
+    KEYS("oxyz<esc>", "abc" N "xy" X "z" N "def");
+    KEYS(QString::fromUtf8("\xc5\xaf<esc>"), "abc" N "x" X "Xy" N "def");
+
+    /* QTCREATORBUG-8774 */
+    data.setText("abc" N "def");
+    data.doCommand(QString::fromUtf8("no \xc3\xb8 l|no l k|no k j|no j h"));
+    KEYS(QString::fromUtf8("\xc3\xb8"), "a" X "bc" N "def");
 }
 
 void FakeVimPlugin::test_vim_command_cc()

src/plugins/fakevim/fakevimhandler.cpp

@@ -1025,8 +1025,8 @@ void Inputs::parseFrom(const QString &str)
 {
     const int n = str.size();
     for (int i = 0; i < n; ++i) {
-        uint c = str.at(i).unicode();
-        if (c == QLatin1Char('<')) {
+        ushort c = str.at(i).unicode();
+        if (c == '<') {
             int j = str.indexOf(QLatin1Char('>'), i);
             Input input;
             if (j != -1) {
@@ -1038,10 +1038,10 @@ void Inputs::parseFrom(const QString &str)
                 append(input);
                 i = j;
             } else {
-                append(Input(QLatin1Char(c)));
+                append(Input(c));
             }
         } else {
-            append(Input(QLatin1Char(c)));
+            append(Input(c));
         }
     }
 }
@@ -1148,7 +1148,7 @@ public:
             const QChar c = m_buffer.at(i);
             if (c.unicode() < 32) {
                 msg += QLatin1Char('^');
-                msg += QLatin1Char(c.unicode() + 64);
+                msg += QChar(c.unicode() + 64);
             } else {
                 msg += c;
             }
@@ -2340,10 +2340,11 @@ EventResult FakeVimHandler::Private::handleKey(const Input &input)
 
             r = handleDefaultKey(in);
             if (r != EventHandled) {
-                // clear bad mapping
-                const int index = g.pendingInput.lastIndexOf(Input());
-                if (index != -1)
-                    g.pendingInput.remove(0, index - 1);
+                // clear bad mapping and end all started edit blocks
+                g.pendingInput.clear();
+                while (m_editBlockLevel > 0)
+                    endEditBlock();
+                return r;
             }
         }
         handleMapped = true;