feat: epub bookmarks (#1337)

Co-authored-by: vedi0boy <nate@origin8publishing.com>
Co-authored-by: Uri Tauber <uritaube@gmail.com>

src/util/BookmarkUtil.cpp

@@ -0,0 +1,35 @@
+#include "BookmarkUtil.h"
+
+#include <algorithm>
+#include <string>
+
+std::string BookmarkUtil::getBookmarksDir() { return "/.crosspoint/bookmarks/"; }
+
+std::string BookmarkUtil::getBookmarkPath(const std::string& bookPath) {
+  // remove leading slash and replace internal slashes to create a flat filename
+  std::string bookName = std::string(bookPath).erase(0, 1);
+  std::replace(bookName.begin(), bookName.end(), '/', '_');
+  std::replace(bookName.begin(), bookName.end(), '\\', '_');
+  const size_t lastDot = bookName.find_last_of('.');
+  if (lastDot != std::string::npos) {
+    bookName.erase(lastDot);
+  }
+  bookName += ".json";
+  return getBookmarksDir() + bookName;
+}
+
+std::string BookmarkUtil::sanitizeBookmarkSummary(std::string summary) {
+  summary.erase(
+      std::unique(summary.begin(), summary.end(), [](char a, char b) { return std::isspace(a) && std::isspace(b); }),
+      summary.end());
+  summary.erase(std::remove(summary.begin(), summary.end(), '\n'), summary.end());
+  summary.erase(summary.begin(),
+                std::find_if(summary.begin(), summary.end(), [](unsigned char ch) { return !std::isspace(ch); }));
+  summary.erase(
+      std::find_if(summary.rbegin(), summary.rend(), [](unsigned char ch) { return !std::isspace(ch); }).base(),
+      summary.end());
+  if (summary.size() > 72) {
+    summary.resize(72);
+  }
+  return summary;
+}

src/util/BookmarkUtil.h

@@ -0,0 +1,9 @@
+#pragma once
+#include <string>
+
+class BookmarkUtil {
+ public:
+  static std::string getBookmarksDir();
+  static std::string getBookmarkPath(const std::string& bookPath);
+  static std::string sanitizeBookmarkSummary(std::string summary);
+};