feat(meshtastic): extract LoBBS plugin library

protocol/plain_text/serialize.cpp

@@ -0,0 +1,54 @@
+#if !MESHTASTIC_EXCLUDE_LOBBS
+
+#include "serialize.h"
+#include "LoBBSHooks.h"
+#include <lodb/LoDB.h>
+
+#include "LoBBSStackGuard.h"
+
+static void lobbsDisplayGeneric(const LoScalar &record, std::string &lineOut)
+{
+    std::string title;
+    std::string body;
+    record.getString(LODB_F_TITLE, title);
+    record.getString(LODB_F_DESCRIPTION, body);
+    if (title.empty() && body.empty()) {
+        lineOut.clear();
+        return;
+    }
+    if (title.empty()) {
+        lineOut = body;
+        return;
+    }
+    if (body.empty()) {
+        lineOut = title;
+        return;
+    }
+    lineOut = title + " (" + body + ")";
+}
+
+bool lobbsSerializePlainText(const LoBBSCommandCtx &ctx, const LoBBSResponse &resp, std::string &out)
+{
+    out.clear();
+    if (!resp.ok) {
+        out = resp.error;
+        return !out.empty();
+    }
+    for (const LoScalar &rec : resp.records) {
+        std::string line;
+        lobbsDisplayGeneric(rec, line);
+        LoScalar shown;
+        shown.setString(LODB_F_TITLE, line);
+        lobbsApplyFilter("display_human", const_cast<LoBBSCommandCtx &>(ctx), shown, rec);
+        line.clear();
+        shown.getString(LODB_F_TITLE, line);
+        if (line.empty())
+            continue;
+        if (!out.empty())
+            out.push_back('\n');
+        out += line;
+    }
+    return !out.empty();
+}
+
+#endif