refactor(message-builder): move static helper methods to functions (#5652)

src/providers/twitch/TwitchIrc.hpp

@@ -0,0 +1,67 @@
+#pragma once
+
+#include "messages/Emote.hpp"
+#include "providers/twitch/TwitchBadge.hpp"
+
+#include <QString>
+#include <QVariantMap>
+
+#include <unordered_map>
+
+namespace chatterino {
+
+struct TwitchEmoteOccurrence {
+    int start;
+    int end;
+    EmotePtr ptr;
+    EmoteName name;
+
+    bool operator==(const TwitchEmoteOccurrence &other) const
+    {
+        return std::tie(this->start, this->end, this->ptr, this->name) ==
+               std::tie(other.start, other.end, other.ptr, other.name);
+    }
+};
+
+/// @brief Parses the `badge-info` tag of an IRC message
+///
+/// The `badge-info` tag maps badge-names to a value. Subscriber badges, for
+/// example, are mapped to the number of months the chatter is subscribed for.
+///
+/// **Example**:
+/// `badge-info=subscriber/22` would be parsed as `{ subscriber => 22 }`
+///
+/// @param tags The tags of the IRC message
+/// @returns A map of badge-names to their values
+std::unordered_map<QString, QString> parseBadgeInfoTag(const QVariantMap &tags);
+
+/// @brief Parses the `badges` tag of an IRC message
+///
+/// The `badges` tag contains a comma separated list of key-value elements which
+/// make up the name and version of each badge.
+///
+/// **Example**:
+/// `badges=broadcaster/1,subscriber/18` would be parsed as
+/// `[(broadcaster, 1), (subscriber, 18)]`
+///
+/// @param tags The tags of the IRC message
+/// @returns A list of badges (name and version)
+std::vector<Badge> parseBadgeTag(const QVariantMap &tags);
+
+/// @brief Parses Twitch emotes in an IRC message
+///
+/// @param tags The tags of the IRC message
+/// @param content The message text. This might be shortened due to skipping
+///                content at the start. `messageOffset` describes this offset.
+/// @param messageOffset The offset of `content` compared to the original
+///                      message text. Used for calculating indices into the
+///                      message. An offset of 3, for example, indicates that
+///                      `content` excludes the first three characters of the
+///                      original message (`@a foo` (original message) -> `foo`
+///                      (content)).
+/// @returns A list of emotes and their positions
+std::vector<TwitchEmoteOccurrence> parseTwitchEmotes(const QVariantMap &tags,
+                                                     const QString &content,
+                                                     int messageOffset);
+
+}  // namespace chatterino