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PR review modif + packet aware

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PacoX
2026-05-17 15:50:25 +02:00
parent 87b0fd6fc7
commit d6647f4701
17 changed files with 200 additions and 100 deletions
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lib/helpers/path_helper.dart
+16 -1
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@@ -20,7 +20,7 @@ class PathHelper {
static List<Uint8List> splitPathBytes(List<int> pathBytes, int hashByteWidth) {
if (pathBytes.isEmpty) return const [];
final width = hashByteWidth.clamp(1, 8);
final width = hashByteWidth.clamp(1, 4);
final hops = <Uint8List>[];
for (int i = 0; i < pathBytes.length; i += width) {
final endIdx = (i + width).clamp(0, pathBytes.length);
@@ -32,6 +32,21 @@ class PathHelper {
return hops;
}
/// Detect the path hash width encoded in a packet's path bytes.
///
/// MeshCore packets encode a "mode" in the high bits of the path bytes
/// (same rule used by meshcore_py): mode = ((firstByte & 0xC0) >> 6),
/// width = mode + 1 (yielding 1..4). If the packet is empty or detection
/// fails, `fallback` is returned (clamped to 1..4).
static int detectPathHashWidth(List<int> pathBytes, {int fallback = 1}) {
final fb = fallback.clamp(1, 4);
if (pathBytes.isEmpty) return fb;
final first = pathBytes[0] & 0xFF;
final mode = (first & 0xC0) >> 6;
final width = (mode & 0x03) + 1;
return width.clamp(1, 4);
}
/// Resolves path bytes to contact names, supporting multi-byte hash widths.
/// Groups path bytes according to [hashByteWidth]: