Fix #204

Replace all duplicated spaces (included tabs) into single space.
Move `testBopomofo` method from UserphraseModel into BopomofoUtil for testing.

Author: davy-tw

src/model/UserphraseModel.cpp

@@ -191,30 +191,21 @@ void UserphraseModel::exportUserphrase(std::shared_ptr<UserphraseExporter> expor
     emit exportCompleted(result, exporter.get()->getPath(), exported);
 }
 
-QString UserphraseModel::checkBopomofo(const QString &bopomofo) const
-{
-    QString replaceBopomofo = bopomofo;
-    replaceBopomofo.replace(QString::fromUtf8("一"),QString::fromUtf8("ㄧ"));
-    replaceBopomofo.replace(QString::fromUtf8("丫"),QString::fromUtf8("ㄚ"));
-
-    return replaceBopomofo;
-}
-
 void UserphraseModel::add(const QString &phrase, const QString &bopomofo)
 {
-    QString replaceBopomofo = checkBopomofo(bopomofo);
+    QString normalizedBopomofo = BopomofoUtil::normalize(bopomofo);
     auto ret = chewing_userphrase_add(
         ctx_.get(),
         phrase.toUtf8().constData(),
-        replaceBopomofo.toUtf8().constData());
+        normalizedBopomofo.toUtf8().constData());
 
     addresult_ = ret;
 
     if (ret > 0) {
         emit beginResetModel();
         userphrase_.insert(Userphrase{
             phrase,
-            bopomofo
+            normalizedBopomofo
         });
         emit endResetModel();
         emit addNewPhraseCompleted(userphrase_[userphrase_.size()-1]);

src/model/UserphraseModel.h

@@ -30,6 +30,7 @@
 #include "UserphraseExporter.h"
 #include "UserphraseImporter.h"
 #include "UserphraseSet.h"
+#include "BopomofoUtil.hpp"
 
 class UserphraseModel final: public QAbstractListModel {
     Q_OBJECT
@@ -71,8 +72,6 @@ public slots:
     void undo();
 
 private:
-    QString checkBopomofo(const QString &bopomofo) const;
-
     std::unique_ptr<ChewingContext, void (*)(ChewingContext*)> ctx_;
     UserphraseSet userphrase_;
     std::vector<Userphrase> removerecord_;

src/util/BopomofoUtil.hpp

@@ -0,0 +1,39 @@
+/*
+ * chewing-editor: Chewing userphrase editor
+ * Copyright (C) 2014 Chewing Development Team
+
+ * 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.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#pragma once
+
+#include <QString>
+#include <QRegExp>
+
+namespace BopomofoUtil {
+    static QString normalize(const QString &bopomofo)
+    {
+        QString normalized = bopomofo;
+
+        // Issue #106: replace ambiguity chars
+        normalized.replace(QString::fromUtf8("一"), QString::fromUtf8("ㄧ"));
+        normalized.replace(QString::fromUtf8("丫"), QString::fromUtf8("ㄚ"));
+    
+        // Issue #204: reduce spaces into one space
+        normalized.replace(QRegExp("\\s+"), " ");
+    
+        return normalized;
+    }
+};

test/testBopomofoUtil.cpp

@@ -0,0 +1,38 @@
+/*
+ * chewing-editor: Chewing userphrase editor
+ * Copyright (C) 2014 Chewing Development Team
+
+ * 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.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "gtest/gtest.h"
+
+#include "BopomofoUtil.hpp"
+
+#if (defined _MSC_VER) && (_MSC_VER >= 1600)
+#    pragma execution_character_set("utf-8")
+#endif
+
+class TestBopomofoUtil : public ::testing::Test {
+protected:
+    TestBopomofoUtil() = default;
+    virtual ~TestBopomofoUtil() = default;
+};
+
+TEST_F(TestBopomofoUtil, ReduceDuplicatedSpacesInsideBopomofo)
+{
+    ASSERT_EQ(0, QString::compare("ㄘㄜˋ ㄕˋ", BopomofoUtil::normalize("ㄘㄜˋ  ㄕˋ")));
+    ASSERT_EQ(0, QString::compare("ㄘㄜˋ ㄕˋ", BopomofoUtil::normalize("ㄘㄜˋ   ㄕˋ")));
+}