Don't parse more items than Config::max_guids.

src/config.hpp

@@ -72,6 +72,7 @@ public:
 
     const string profile;
     ProfileData profiledata;
+    constexpr static size_t max_guids{100};
 
     void write();
     [[nodiscard]] fs::path get_config_dir() const;

src/document.cpp

@@ -165,8 +165,16 @@ void Document::parse()
 
 void Document::parse_rss(const pt::ptree &tree)
 {
+    size_t counter{0};
     for (const auto &child : tree.get_child("rss.channel"))
     {
+        if (counter == Config::max_guids)
+        {
+            BOOST_LOG_TRIVIAL(debug)
+                << "Maximum number of items reached. Stopped parsing.";
+            break;
+        }
+        ++counter;
         if (child.first == "item")
         {
             const auto &rssitem = child.second;

src/mastoapi.cpp

@@ -128,7 +128,7 @@ void MastoAPI::post_item(const Item &item)
     BOOST_LOG_TRIVIAL(debug) << "Posted status with GUID: " << item.guid;
 
     _profile.guids.push_back(item.guid);
-    if (_profile.guids.size() > _max_guids)
+    if (_profile.guids.size() > Config::max_guids)
     {
         _profile.guids.pop_front();
     }

src/mastoapi.hpp

@@ -38,7 +38,6 @@ public:
 private:
     ProfileData &_profile;
     mastodonpp::Instance _instance;
-    constexpr static size_t _max_guids{100};
 
     string replacements_apply(const string &text);
 };