File stuff

src/util/utils.zig

@@ -0,0 +1,24 @@
+const std = @import("std");
+
+const Decompressor = @import("../decomp.zig");
+const Inode = @import("../inode.zig");
+const MetadataReader = @import("metadata.zig");
+const OffsetFile = @import("offset_file.zig");
+
+pub fn pathIsSelf(path: []const u8) bool {
+    if (path.len == 0) return true;
+    if (path.len == 1) {
+        return switch (path[0]) {
+            '.', '/' => true,
+            else => false,
+        };
+    }
+    return std.mem.eql(u8, path, "./");
+}
+
+pub fn refToInode(alloc: std.mem.Allocator, decomp: *const Decompressor, fil: OffsetFile, inode_start: u64, block_size: u32, ref: Inode.Ref) !Inode {
+    var rdr = try fil.readerAt(inode_start + ref.block_start, &[0]u8{});
+    var meta: MetadataReader = .init(&rdr.interface, decomp);
+    try meta.interface.discardAll(ref.block_offset);
+    return .read(alloc, &meta.interface, block_size);
+}