Replaced async with thread for mingw support

src/core/hexeditor.cpp

@@ -241,6 +241,14 @@ vector<Match *> HexEditor::findPatterns() {
     }
 }
 
+void HexEditor::initCompare() {
+    this->fileCompared = false;
+}
+
+bool HexEditor::hasCompared() {
+    return this->fileCompared;
+}
+
 vector<pair<unsigned long, uint8_t>>  HexEditor::compareTo(HexEditor &hexEditor) {
     vector<pair<unsigned long, uint8_t>> diff_bytes;
 
@@ -254,8 +262,8 @@ vector<pair<unsigned long, uint8_t>>  HexEditor::compareTo(HexEditor &hexEditor)
         if (this->getCurrentData()[i] != byte_new) {
             diff_bytes.push_back(pair<unsigned long, uint8_t>(i, byte_new));
         }
-        this->bytesRead = i;
     }
+    this->fileCompared = true;
 
     return diff_bytes;
 }

src/core/hexeditor.h

@@ -28,6 +28,7 @@ class HexEditor
     atomic<unsigned long> bytesRead;
     atomic<unsigned long> bytesSaved;
     atomic<bool> fileSaved;
+    atomic<bool> fileCompared;
     HexEditor();
     HexEditor(string path);
     ~HexEditor();
@@ -44,6 +45,8 @@ class HexEditor
     string getCurrentPath();
     vector<Match *> findPatterns();
     vector<pair<unsigned long, uint8_t>> compareTo(HexEditor &hexEditor);
+    void initCompare();
+    bool hasCompared();
 
 private:
     PatternMatching *patternMatching;

src/fhex.cpp

@@ -835,26 +835,28 @@ void Fhex::compare(QString filename) {
     this->progressBar->setValue(0);
     this->statusBar.setText("Comparing file.. please wait");
 
-    future<vector<pair<unsigned long, uint8_t>>> fut_res = async([this, filename]()
+    vector<pair<unsigned long, uint8_t>> res;
+    this->hexEditor->initCompare();
+    std::thread th([this, filename, &res]()
     {
         HexEditor newHexEditor;
         newHexEditor.loadFileAsync(filename.toStdString());
         while(!newHexEditor.isFileLoaded()) {
             std::this_thread::sleep_for(std::chrono::milliseconds(100));
         }
-        return this->hexEditor->compareTo(newHexEditor);
+        res = this->hexEditor->compareTo(newHexEditor);
     });
 
-    while (fut_res.wait_for(std::chrono::milliseconds(100)) != std::future_status::ready) {
+    while (!this->hexEditor->hasCompared()) {
         int val = (this->hexEditor->bytesRead * 100) / this->hexEditor->loadedFileSize;
         this->progressBar->setValue(val);
         this->repaint();
         this->app->processEvents();
     }
+    th.join();
 
     this->progressBar->setVisible(false);
 
-    vector<pair<unsigned long, uint8_t>> res = fut_res.get();
     unsigned long changes = res.size();
     unsigned long start_offset = 0;
     unsigned long offset = 0;