Issue 4127 - [emscripten] Convert subscription classes to C++ - Part 1

compiled/subscription/DownloadableSubscription.cpp

+#include "DownloadableSubscription.h"
+
+DownloadableSubscription::DownloadableSubscription(const String& id)
+    : Subscription(Type::DOWNLOADABLE, id), mFixedTitle(false), mLastCheck(0),
+      mHardExpiration(0), mSoftExpiration(0), mLastDownload(0), mLastSuccess(0),
+      mErrorCount(0), mDataRevision(0), mDownloadCount(0)
+{
+  SetTitle(id);
+}
+
+OwnedString DownloadableSubscription::Serialize() const
+{
+  OwnedString result(Subscription::Serialize());
+  char buffer[32];
+  if (mFixedTitle)
+    result.append(u"fixedTitle=true\n"_str);
+  if (!mHomepage.empty())
+  {
+    result.append(u"homepage="_str);
+    result.append(mHomepage);
+    result.append(u'\n');
+  }
+  if (mLastCheck)
+  {
+    result.append(u"lastCheck="_str);
+    int len = sprintf(buffer, "%.0f", mLastCheck);
+    result.append(buffer, len);
+    result.append(u'\n');
+  }
+  if (mHardExpiration)
+  {
+    result.append(u"expires="_str);
+    int len = sprintf(buffer, "%.0f", mHardExpiration);
+    result.append(buffer, len);
+    result.append(u'\n');
+  }
+  if (mSoftExpiration)
+  {
+    result.append(u"softExpiration="_str);
+    int len = sprintf(buffer, "%.0f", mSoftExpiration);
+    result.append(buffer, len);
+    result.append(u'\n');
+  }
+  if (mLastDownload)
+  {
+    result.append(u"lastDownload="_str);
+    int len = sprintf(buffer, "%.0f", mLastDownload);
+    result.append(buffer, len);
+    result.append(u'\n');
+  }
+  if (!mDownloadStatus.empty())
+  {
+    result.append(u"downloadStatus="_str);
+    result.append(mDownloadStatus);
+    result.append(u'\n');
+  }
+  if (mLastSuccess)
+  {
+    result.append(u"lastSuccess="_str);
+    int len = sprintf(buffer, "%.0f", mLastSuccess);
+    result.append(buffer, len);
+    result.append(u'\n');
+  }
+  if (mErrorCount)
+  {
+    result.append(u"errors="_str);
+    int len = sprintf(buffer, "%i", mErrorCount);
+    result.append(buffer, len);
+    result.append(u'\n');
+  }
+  if (mDataRevision)
+  {
+    result.append(u"version="_str);
+    int len = sprintf(buffer, "%.0f", mDataRevision);
+    result.append(buffer, len);
+    result.append(u'\n');
+  }
+  if (!mRequiredVersion.empty())
+  {
+    result.append(u"requiredVersion="_str);
+    result.append(mRequiredVersion);
+    result.append(u'\n');
+  }
+  if (mDownloadCount)
+  {
+    result.append(u"downloadCount="_str);
+    int len = sprintf(buffer, "%i", mDownloadCount);
+    result.append(buffer, len);
+    result.append(u'\n');
+  }
+  return result;
+}