Re-added all C decompressors

Some cleanup
Remove inode arena
Added deinit to Archive to destroy the File.MemoryMap

src/decomp/c_lzo.zig

@@ -0,0 +1,35 @@
+const std = @import("std");
+const Io = std.Io;
+const Reader = std.Io.Reader;
+const zstd = std.compress.zstd;
+const Node = std.SinglyLinkedList.Node;
+
+const c = @import("c");
+
+const Decompressor = @import("../util/decompressor.zig");
+const Error = Decompressor.Error;
+
+const Queue = std.Io.Queue(c.lzma_stream);
+
+const Self = @This();
+
+pub const stateless_decompressor: Decompressor = .{ .decomp_fn = statelessDecomp };
+
+fn statelessDecomp(_: ?*const Decompressor, _: std.mem.Allocator, in: []u8, out: []u8) Error!usize {
+    _ = c.lzo_init();
+    var out_len = out.len;
+    const res = c.lzo1x_decompress_safe(in.ptr, in.len, out.ptr, &out_len, null);
+    if (res != c.LZO_E_OK) return Error.ReadFailed;
+    return out_len;
+}
+
+// lzma_allocator
+
+fn lzmaAlloc(ptr: ?*anyopaque, size: usize, _: usize) callconv(.c) ?*anyopaque {
+    var alloc: *std.mem.Allocator = @ptrCast(@alignCast(@constCast(ptr)));
+    return alloc.rawAlloc(size, .@"1", 0);
+}
+fn lzmaFree(ptr: ?*anyopaque, mem_ptr: ?*anyopaque) callconv(.c) void {
+    var alloc: *std.mem.Allocator = @ptrCast(@alignCast(@constCast(ptr)));
+    alloc.rawFree(@ptrCast(mem_ptr), .@"1", 0);
+}