Added back the INIFile read function

Signed-off-by: Trial97 <alexandru.tripon97@gmail.com>

launcher/settings/INIFile.cpp

@@ -45,12 +45,12 @@
 
 #include <QSettings>
 
-INIFile::INIFile()
-{
-}
+INIFile::INIFile() {}
 
 bool INIFile::saveFile(QString fileName)
 {
+    if (!contains("ConfigVersion"))
+        insert("ConfigVersion", "1.1");
     QSettings _settings_obj{ fileName, QSettings::Format::IniFormat };
     _settings_obj.setFallbacksEnabled(false);
 
@@ -71,6 +71,67 @@ bool INIFile::saveFile(QString fileName)
 
     return true;
 }
+QString unescape(QString orig)
+{
+    QString out;
+    QChar prev = QChar::Null;
+    for (auto c : orig) {
+        if (prev == '\\') {
+            if (c == 'n')
+                out += '\n';
+            else if (c == 't')
+                out += '\t';
+            else if (c == '#')
+                out += '#';
+            else
+                out += c;
+            prev = QChar::Null;
+        } else {
+            if (c == '\\') {
+                prev = c;
+                continue;
+            }
+            out += c;
+            prev = QChar::Null;
+        }
+    }
+    return out;
+}
+bool parseOldFileFormat(QIODevice& device, QSettings::SettingsMap& map)
+{
+    QTextStream in(device.readAll());
+#if QT_VERSION <= QT_VERSION_CHECK(6, 0, 0)
+    in.setCodec("UTF-8");
+#endif
+
+    QStringList lines = in.readAll().split('\n');
+    for (int i = 0; i < lines.count(); i++) {
+        QString& lineRaw = lines[i];
+        // Ignore comments.
+        int commentIndex = 0;
+        QString line = lineRaw;
+        // Search for comments until no more escaped # are available
+        while ((commentIndex = line.indexOf('#', commentIndex + 1)) != -1) {
+            if (commentIndex > 0 && line.at(commentIndex - 1) == '\\') {
+                continue;
+            }
+            line = line.left(lineRaw.indexOf('#')).trimmed();
+        }
+
+        int eqPos = line.indexOf('=');
+        if (eqPos == -1)
+            continue;
+        QString key = line.left(eqPos).trimmed();
+        QString valueStr = line.right(line.length() - eqPos - 1).trimmed();
+
+        valueStr = unescape(valueStr);
+
+        QVariant value(valueStr);
+        map.insert(key, value);
+    }
+
+    return true;
+}
 
 bool INIFile::loadFile(QString fileName)
 {
@@ -84,10 +145,19 @@ bool INIFile::loadFile(QString fileName)
             qCritical() << "A format error occurred (e.g. loading a malformed INI file).";
         return false;
     }
-
-    for (auto&& key : _settings_obj.allKeys())
-        insert(key, _settings_obj.value(key));
- 
+    if (!_settings_obj.value("ConfigVersion").isValid()) {
+        QFile file(fileName);
+        if (!file.open(QIODevice::ReadOnly))
+            return false;
+        QSettings::SettingsMap map;
+        parseOldFileFormat(file, map);
+        file.close();
+        for (auto&& key : map.keys())
+            insert(key, map.value(key));
+        insert("ConfigVersion", "1.1");
+    } else
+        for (auto&& key : _settings_obj.allKeys())
+            insert(key, _settings_obj.value(key));
     return true;
 }
 
@@ -103,4 +173,3 @@ void INIFile::set(QString key, QVariant val)
 {
     this->operator[](key) = val;
 }
-

tests/INIFile_test.cpp

@@ -1,24 +1,16 @@
 #include <QTest>
 
+#include <settings/INIFile.h>
 #include <QList>
 #include <QVariant>
-#include <settings/INIFile.h>
 
 #include <QVariantUtils.h>
 
-class IniFileTest : public QObject
-{
+class IniFileTest : public QObject {
     Q_OBJECT
-private
-slots:
-    void initTestCase()
-    {
-
-    }
-    void cleanupTestCase()
-    {
-
-    }
+   private slots:
+    void initTestCase() {}
+    void cleanupTestCase() {}
 
     void test_Escape_data()
     {
@@ -47,17 +39,17 @@ slots:
         // load
         INIFile f2;
         f2.loadFile(filename);
-        QCOMPARE(f2.get("a","NOT SET").toString(), a);
-        QCOMPARE(f2.get("b","NOT SET").toString(), b);
+        QCOMPARE(f2.get("a", "NOT SET").toString(), a);
+        QCOMPARE(f2.get("b", "NOT SET").toString(), b);
     }
 
     void test_SaveLoadLists()
     {
         QString slist_strings = "(\"a\",\"b\",\"c\")";
-        QStringList list_strings = {"a", "b", "c"};
+        QStringList list_strings = { "a", "b", "c" };
 
         QString slist_numbers = "(1,2,3,10)";
-        QList<int> list_numbers = {1, 2, 3, 10};
+        QList<int> list_numbers = { 1, 2, 3, 10 };
 
         QString filename = "test_SaveLoadLists.ini";
 
@@ -72,13 +64,41 @@ slots:
 
         QStringList out_list_strings = f2.get("list_strings", QStringList()).toStringList();
         qDebug() << "OutStringList" << out_list_strings;
-        
+
         QList<int> out_list_numbers = QVariantUtils::toList<int>(f2.get("list_numbers", QVariantUtils::fromList(QList<int>())));
         qDebug() << "OutNumbersList" << out_list_numbers;
 
         QCOMPARE(out_list_strings, list_strings);
         QCOMPARE(out_list_numbers, list_numbers);
     }
+
+    void test_SaveAleardyExistingFile()
+    {
+        QString fileName = "test_SaveAleardyExistingFile.ini";
+        QString fileContent = R"(InstanceType=OneSix
+iconKey=vanillia_icon
+name=Minecraft Vanillia
+OverrideCommands=true
+PreLaunchCommand="$INST_JAVA" -jar packwiz-installer-bootstrap.jar link
+)";
+        QFile file(fileName);
+
+        if (file.open(QFile::WriteOnly | QFile::Text)) {
+            QTextStream stream(&file);
+            stream << fileContent;
+            file.close();
+        }
+
+        // load
+        INIFile f1;
+        f1.loadFile(fileName);
+        QCOMPARE(f1.get("PreLaunchCommand", "NOT SET").toString(), "\"$INST_JAVA\" -jar packwiz-installer-bootstrap.jar link");
+        f1.saveFile(fileName);
+        INIFile f2;
+        f2.loadFile(fileName);
+        QCOMPARE(f2.get("PreLaunchCommand", "NOT SET").toString(), "\"$INST_JAVA\" -jar packwiz-installer-bootstrap.jar link");
+        QCOMPARE(f2.get("ConfigVersion", "NOT SET").toString(), "1.1");
+    }
 };
 
 QTEST_GUILESS_MAIN(IniFileTest)