Convert from Rizin commands to the API for w (#2926)

src/common/IOModesController.cpp

@@ -100,7 +100,7 @@ bool IOModesController::askCommitUnsavedChanges()
         if (ret == QMessageBox::Save) {
             Core()->commitWriteCache();
         } else if (ret == QMessageBox::Discard) {
-            Core()->cmdRaw("wcr");
+            Core()->resetWriteCache();
             emit Core()->refreshCodeViews();
         } else if (ret == QMessageBox::Cancel) {
             return false;

src/core/Cutter.cpp

@@ -4126,18 +4126,27 @@ bool CutterCore::isIOCacheEnabled() const
 
 void CutterCore::commitWriteCache()
 {
+    CORE_LOCK();
     // Temporarily disable cache mode
     TempConfig tempConfig;
     tempConfig.set("io.cache", false);
     if (!isWriteModeEnabled()) {
         cmdRaw("oo+");
-        cmdRaw("wci");
+        rz_io_cache_commit(core->io, 0, UT64_MAX);
+        rz_core_block_read(core);
         cmdRaw("oo");
     } else {
-        cmdRaw("wci");
+        rz_io_cache_commit(core->io, 0, UT64_MAX);
+        rz_core_block_read(core);
     }
 }
 
+void CutterCore::resetWriteCache()
+{
+    CORE_LOCK();
+    rz_io_cache_reset(core->io, core->io->cached);
+}
+
 // Enable or disable write-mode. Avoid unecessary changes if not need.
 void CutterCore::setWriteMode(bool enabled)
 {

src/core/Cutter.h

@@ -721,6 +721,10 @@ public:
      * @brief Commit write cache to the file on disk.
      */
     void commitWriteCache();
+    /**
+     * @brief Reset write cache.
+     */
+    void resetWriteCache();
 
     /**
      * @brief Enable or disable Write mode. When the file is opened in write mode, any changes to it