Move ::nPruneTarget into BlockManager

src/node/blockmanager_args.cpp

@@ -0,0 +1,32 @@
+// Copyright (c) 2023 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <node/blockmanager_args.h>
+
+#include <util/system.h>
+#include <validation.h>
+
+namespace node {
+std::optional<bilingual_str> ApplyArgsManOptions(const ArgsManager& args, BlockManager::Options& opts)
+{
+    // block pruning; get the amount of disk space (in MiB) to allot for block & undo files
+    int64_t nPruneArg{args.GetIntArg("-prune", opts.prune_target)};
+    if (nPruneArg < 0) {
+        return _("Prune cannot be configured with a negative value.");
+    }
+    uint64_t nPruneTarget{uint64_t(nPruneArg) * 1024 * 1024};
+    if (nPruneArg == 1) { // manual pruning: -prune=1
+        nPruneTarget = std::numeric_limits<uint64_t>::max();
+        fPruneMode = true;
+    } else if (nPruneTarget) {
+        if (nPruneTarget < MIN_DISK_SPACE_FOR_BLOCK_FILES) {
+            return strprintf(_("Prune configured below the minimum of %d MiB.  Please use a higher number."), MIN_DISK_SPACE_FOR_BLOCK_FILES / 1024 / 1024);
+        }
+        fPruneMode = true;
+    }
+    opts.prune_target = nPruneTarget;
+
+    return std::nullopt;
+}
+} // namespace node