add Markdown (.md) file reader with formatting support #1698 by dcherrera

src/activities/reader/ReaderActivity.cpp

@@ -11,6 +11,7 @@
 #include "CrossPointState.h"
 #include "Epub.h"
 #include "EpubReaderActivity.h"
+#include "MdReaderActivity.h"
 #include "Txt.h"
 #include "TxtReaderActivity.h"
 #include "Xtc.h"
@@ -46,10 +47,9 @@ std::string ReaderActivity::extractFolderPath(const std::string& filePath) {
 
 bool ReaderActivity::isXtcFile(const std::string& path) { return FsHelpers::hasXtcExtension(path); }
 
-bool ReaderActivity::isTxtFile(const std::string& path) {
-  return FsHelpers::hasTxtExtension(path) ||
-         FsHelpers::hasMarkdownExtension(path);  // Treat .md as txt files (until we have a markdown reader)
-}
+bool ReaderActivity::isTxtFile(const std::string& path) { return FsHelpers::hasTxtExtension(path); }
+
+bool ReaderActivity::isMDFile(const std::string& path) { return FsHelpers::hasMarkdownExtension(path); }
 
 bool ReaderActivity::isImageFile(const std::string& path) {
   return FsHelpers::hasBmpExtension(path) || FsHelpers::hasJpgExtension(path) || FsHelpers::hasPngExtension(path);
@@ -130,6 +130,12 @@ void ReaderActivity::onGoToTxtReader(std::unique_ptr<Txt> txt) {
   activityManager.replaceActivity(std::make_unique<TxtReaderActivity>(renderer, mappedInput, std::move(txt)));
 }
 
+void ReaderActivity::onGoToMdReader(std::unique_ptr<Txt> txt) {
+  const auto txtPath = txt->getPath();
+  currentBookPath = txtPath;
+  activityManager.replaceActivity(std::make_unique<MdReaderActivity>(renderer, mappedInput, std::move(txt)));
+}
+
 void ReaderActivity::onEnter() {
   Activity::onEnter();
   logReaderLaunchMemSnapshot("onEnter_begin");
@@ -161,6 +167,13 @@ void ReaderActivity::onEnter() {
       return;
     }
     onGoToXtcReader(std::move(xtc));
+  } else if (isMdFile(initialBookPath)) {
+    auto txt = loadTxt(initialBookPath);
+    if (!txt) {
+      onGoBack();
+      return;
+    }
+    onGoToMdReader(std::move(txt));
   } else if (isTxtFile(initialBookPath)) {
     auto txt = loadTxt(initialBookPath);
     if (!txt) {