482 lines
22 KiB
Zig
482 lines
22 KiB
Zig
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const asynk = @import("async");
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const std = @import("std");
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const zml = @import("../../zml.zig");
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const utils = @import("utils.zig");
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const PickleOp = @import("ops.zig").PickleOp;
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const RawPickleOp = @import("ops.zig").RawPickleOp;
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const Allocator = std.mem.Allocator;
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const testing = std.testing;
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pub const Decoder = struct {
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buffer_file: zml.aio.MemoryMappedFile,
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file_map: std.StringArrayHashMapUnmanaged(std.zip.Iterator(asynk.File.SeekableStream).Entry) = .{},
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tar_file: ?TarStream = null,
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ops: []PickleOp,
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is_zip_file: bool,
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zip_prefix: []const u8 = &[_]u8{},
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const magic = "PK\x03\x04";
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pub fn fromTarFile(allocator: Allocator, mapped: zml.aio.MemoryMappedFile, file: std.tar.Iterator(asynk.File.Reader).File) !Decoder {
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const tar_stream = try TarStream.init(file);
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const file_magic = try tar_stream.reader().readBytesNoEof(magic.len);
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try tar_stream.seekTo(0);
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var self: Decoder = .{
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.buffer_file = mapped,
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.tar_file = tar_stream,
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.ops = undefined,
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.is_zip_file = std.mem.eql(u8, &file_magic, magic),
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};
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if (!self.is_zip_file) {
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const reader = tar_stream.reader();
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self.ops = try parse(allocator, reader, try tar_stream.getEndPos());
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} else {
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self.ops = try self.parseOps(allocator, self.tar_file.?.seekableStream());
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}
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return self;
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}
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pub fn init(allocator: Allocator, file: asynk.File) !Decoder {
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const file_magic = try file.reader().readBytesNoEof(magic.len);
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try file.seekTo(0);
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var self: Decoder = .{
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.buffer_file = try zml.aio.MemoryMappedFile.init(file),
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.is_zip_file = std.mem.eql(u8, &file_magic, magic),
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.ops = undefined,
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};
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if (!self.is_zip_file) {
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const reader = self.buffer_file.file.reader();
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self.ops = try parse(allocator, reader, try reader.context.getEndPos());
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} else {
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self.ops = try self.parseOps(allocator, self.buffer_file.file.seekableStream());
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}
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return self;
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}
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pub fn deinit(self: *Decoder) void {
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self.buffer_file.deinit();
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self.* = undefined;
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}
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fn parseOps(self: *Decoder, allocator: Allocator, seekable_stream: asynk.File.SeekableStream) ![]PickleOp {
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// TODO(SuperAuguste): deflate using `std.compress.flate`'s `decompressor`
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// TODO(SuperAuguste): explore swapping in non-generic reader here instead of using switch(?)
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// not sure if that'd actually be beneficial in any way
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var iter = try std.zip.Iterator(asynk.File.SeekableStream).init(seekable_stream);
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var filename_buf: [std.fs.max_path_bytes]u8 = undefined;
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while (try iter.next()) |entry| {
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const filename = filename_buf[0..entry.filename_len];
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try seekable_stream.seekTo(entry.header_zip_offset + @sizeOf(std.zip.CentralDirectoryFileHeader));
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const len = try seekable_stream.context.reader().readAll(filename);
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if (len != filename.len) return error.ZipBadFileOffset;
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if (isBadFilename(filename)) return error.ZipBadFilename;
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std.mem.replaceScalar(u8, filename, '\\', '/'); // normalize path separators
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try self.file_map.put(allocator, try allocator.dupe(u8, filename), entry);
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}
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var file_iter = self.file_map.iterator();
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while (file_iter.next()) |e| {
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const entry = e.value_ptr.*;
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const filename = e.key_ptr.*;
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if (std.mem.indexOf(u8, filename, "data.pkl")) |idx| {
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self.zip_prefix = filename[0..idx];
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const local_data_header_offset: u64 = local_data_header_offset: {
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const local_header = blk: {
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try seekable_stream.seekTo(entry.file_offset);
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break :blk try seekable_stream.context.reader().readStructEndian(std.zip.LocalFileHeader, .little);
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};
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if (!std.mem.eql(u8, &local_header.signature, &std.zip.local_file_header_sig))
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return error.ZipBadFileOffset;
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if (local_header.version_needed_to_extract != entry.version_needed_to_extract)
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return error.ZipMismatchVersionNeeded;
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if (local_header.last_modification_time != entry.last_modification_time)
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return error.ZipMismatchModTime;
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if (local_header.last_modification_date != entry.last_modification_date)
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return error.ZipMismatchModDate;
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if (@as(u16, @bitCast(local_header.flags)) != @as(u16, @bitCast(entry.flags)))
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return error.ZipMismatchFlags;
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if (local_header.crc32 != 0 and local_header.crc32 != entry.crc32)
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return error.ZipMismatchCrc32;
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if (local_header.compressed_size != 0 and
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local_header.compressed_size != entry.compressed_size)
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return error.ZipMismatchCompLen;
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if (local_header.uncompressed_size != 0 and
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local_header.uncompressed_size != entry.uncompressed_size)
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return error.ZipMismatchUncompLen;
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if (local_header.filename_len != entry.filename_len)
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return error.ZipMismatchFilenameLen;
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break :local_data_header_offset @as(u64, local_header.filename_len) +
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@as(u64, local_header.extra_len);
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};
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const local_data_file_offset: u64 =
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@as(u64, entry.file_offset) +
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@as(u64, @sizeOf(std.zip.LocalFileHeader)) +
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local_data_header_offset;
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try seekable_stream.seekTo(local_data_file_offset);
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switch (entry.compression_method) {
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.store => {
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return parse(allocator, seekable_stream.context.reader(), entry.uncompressed_size);
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},
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.deflate => {
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// TODO(cryptodeal): handle decompress
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@panic("TODO support use of `deflate`");
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},
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else => @panic("TODO support other modes of compression"),
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}
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}
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}
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std.log.err("Could not find file ending in `data.pkl` in archive", .{});
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return error.PickleNotFound;
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}
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fn parse(allocator: Allocator, reader: anytype, len: usize) ![]PickleOp {
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var results = std.ArrayList(PickleOp).init(allocator);
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errdefer results.deinit();
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outer: while (true) {
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const b = try reader.readByte();
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switch (@as(RawPickleOp, @enumFromInt(b))) {
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.mark => try results.append(.{ .mark = {} }),
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.stop => {
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try results.append(.{ .stop = {} });
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break :outer;
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},
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.pop => try results.append(.{ .pop = {} }),
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.pop_mark => try results.append(.{ .pop_mark = {} }),
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.dup => try results.append(.{ .dup = {} }),
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.float => {
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const buf = try reader.readUntilDelimiterAlloc(allocator, '\n', len);
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errdefer allocator.free(buf);
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try results.append(.{ .float = buf });
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},
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.int => {
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const buf = try reader.readUntilDelimiterAlloc(allocator, '\n', len);
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errdefer allocator.free(buf);
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try results.append(.{ .int = buf });
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},
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.binint => try results.append(.{ .binint = try reader.readInt(i32, .little) }),
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.binint1 => try results.append(.{ .binint1 = try reader.readByte() }),
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.long => {
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const buf = try reader.readUntilDelimiterAlloc(allocator, '\n', len);
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errdefer allocator.free(buf);
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try results.append(.{ .long = buf });
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},
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.binint2 => try results.append(.{ .binint2 = try reader.readInt(u16, .little) }),
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.none => try results.append(.{ .none = {} }),
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.persid => {
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const buf = try reader.readUntilDelimiterAlloc(allocator, '\n', len);
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errdefer allocator.free(buf);
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try results.append(.{ .persid = buf });
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},
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.binpersid => try results.append(.{ .binpersid = {} }),
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.reduce => try results.append(.{ .reduce = {} }),
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.string => {
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const buf = try reader.readUntilDelimiterAlloc(allocator, '\n', len);
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errdefer allocator.free(buf);
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try results.append(.{ .string = buf });
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},
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.binstring => {
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const str_len = try reader.readInt(u32, .little);
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const buf = try allocator.alloc(u8, str_len);
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errdefer allocator.free(buf);
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_ = try reader.read(buf);
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try results.append(.{ .binstring = buf });
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},
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.short_binstring => {
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const str_len = try reader.readByte();
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const buf = try allocator.alloc(u8, str_len);
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errdefer allocator.free(buf);
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_ = try reader.read(buf);
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try results.append(.{ .short_binstring = buf });
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},
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.unicode => {
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const buf = try reader.readUntilDelimiterAlloc(allocator, '\n', len);
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errdefer allocator.free(buf);
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try results.append(.{ .unicode = buf });
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},
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.binunicode => {
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const str_len = try reader.readInt(u32, .little);
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const buf = try allocator.alloc(u8, str_len);
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errdefer allocator.free(buf);
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_ = try reader.read(buf);
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try results.append(.{ .binunicode = buf });
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},
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.append => try results.append(.{ .append = {} }),
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.build => try results.append(.{ .build = {} }),
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.global => {
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const buf0 = try reader.readUntilDelimiterAlloc(allocator, '\n', len);
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errdefer allocator.free(buf0);
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const buf1 = try reader.readUntilDelimiterAlloc(allocator, '\n', len);
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errdefer allocator.free(buf1);
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_ = (buf1.len + 1);
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try results.append(.{ .global = .{ buf0, buf1 } });
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},
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.dict => try results.append(.{ .dict = {} }),
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.empty_dict => try results.append(.{ .empty_dict = {} }),
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.appends => try results.append(.{ .appends = {} }),
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.get => {
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const buf = try reader.readUntilDelimiterAlloc(allocator, '\n', len);
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errdefer allocator.free(buf);
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try results.append(.{ .get = buf });
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},
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.binget => try results.append(.{ .binget = try reader.readByte() }),
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.inst => {
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const buf0 = try reader.readUntilDelimiterAlloc(allocator, '\n', len);
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errdefer allocator.free(buf0);
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const buf1 = try reader.readUntilDelimiterAlloc(allocator, '\n', len);
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errdefer allocator.free(buf1);
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_ = (buf1.len + 1);
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try results.append(.{ .inst = .{ buf0, buf1 } });
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},
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.long_binget => try results.append(.{ .long_binget = try reader.readInt(u32, .little) }),
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.list => try results.append(.{ .list = {} }),
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.empty_list => try results.append(.{ .empty_list = {} }),
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.obj => try results.append(.{ .obj = {} }),
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.put => {
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const buf = try reader.readUntilDelimiterAlloc(allocator, '\n', len);
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errdefer allocator.free(buf);
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try results.append(.{ .put = buf });
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},
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.binput => {
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try results.append(.{ .binput = try reader.readByte() });
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},
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.long_binput => {
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try results.append(.{ .long_binput = try reader.readInt(u32, .little) });
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},
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.setitem => try results.append(.{ .setitem = {} }),
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.tuple => try results.append(.{ .tuple = {} }),
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.empty_tuple => try results.append(.{ .empty_tuple = {} }),
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.setitems => try results.append(.{ .setitems = {} }),
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.binfloat => try results.append(.{ .binfloat = @bitCast(try reader.readInt(u64, .big)) }),
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.proto => try results.append(.{ .proto = try reader.readByte() }),
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.newobj => try results.append(.{ .newobj = {} }),
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.ext1 => try results.append(.{ .ext1 = try reader.readByte() }),
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.ext2 => try results.append(.{ .ext2 = try reader.readInt(i16, .little) }),
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.ext4 => try results.append(.{ .ext4 = try reader.readInt(i32, .little) }),
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.tuple1 => try results.append(.{ .tuple1 = {} }),
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.tuple2 => try results.append(.{ .tuple2 = {} }),
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.tuple3 => try results.append(.{ .tuple3 = {} }),
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.newtrue => try results.append(.{ .newtrue = {} }),
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.newfalse => try results.append(.{ .newfalse = {} }),
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.long1 => {
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const str_len = try reader.readByte();
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const buf = try allocator.alloc(u8, str_len);
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errdefer allocator.free(buf);
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_ = try reader.read(buf);
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try results.append(.{ .long1 = buf });
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},
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.long4 => {
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const str_len = try reader.readInt(u32, .little);
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const buf = try allocator.alloc(u8, str_len);
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errdefer allocator.free(buf);
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_ = try reader.read(buf);
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try results.append(.{ .long4 = buf });
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},
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.binbytes => {
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const str_len = try reader.readInt(u32, .little);
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const buf = try allocator.alloc(u8, str_len);
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errdefer allocator.free(buf);
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_ = try reader.read(buf);
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try results.append(.{ .binbytes = buf });
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},
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.binbytes8 => {
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const str_len = try reader.readInt(u64, .little);
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const buf = try allocator.alloc(u8, str_len);
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errdefer allocator.free(buf);
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_ = try reader.read(buf);
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try results.append(.{ .binbytes8 = buf });
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},
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.short_binbytes => {
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const str_len = try reader.readByte();
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const buf = try allocator.alloc(u8, str_len);
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errdefer allocator.free(buf);
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_ = try reader.read(buf);
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try results.append(.{ .short_binbytes = buf });
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},
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.binunicode8 => {
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const str_len = try reader.readInt(u64, .little);
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const buf = try allocator.alloc(u8, str_len);
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errdefer allocator.free(buf);
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_ = try reader.read(buf);
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try results.append(.{ .binunicode8 = buf });
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},
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.short_binunicode => {
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const str_len = try reader.readByte();
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const buf = try allocator.alloc(u8, str_len);
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errdefer allocator.free(buf);
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_ = try reader.read(buf);
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try results.append(.{ .binunicode8 = buf });
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},
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.empty_set => try results.append(.{ .empty_set = {} }),
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|
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.additems => try results.append(.{ .additems = {} }),
|
||
|
|
.frozenset => try results.append(.{ .frozenset = {} }),
|
||
|
|
.newobj_ex => try results.append(.{ .newobj_ex = {} }),
|
||
|
|
.stack_global => try results.append(.{ .stack_global = {} }),
|
||
|
|
.memoize => try results.append(.{ .memoize = {} }),
|
||
|
|
.frame => try results.append(.{ .frame = try reader.readInt(u64, .little) }),
|
||
|
|
.bytearray8 => {
|
||
|
|
const str_len = try reader.readInt(u64, .little);
|
||
|
|
const buf = try allocator.alloc(u8, str_len);
|
||
|
|
errdefer allocator.free(buf);
|
||
|
|
_ = try reader.read(buf);
|
||
|
|
try results.append(.{ .bytearray8 = buf });
|
||
|
|
},
|
||
|
|
.next_buffer => try results.append(.{ .next_buffer = {} }),
|
||
|
|
.readonly_buffer => try results.append(.{ .readonly_buffer = {} }),
|
||
|
|
else => {},
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return results.toOwnedSlice();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
const TarStream = struct {
|
||
|
|
pub const SeekableStream = std.io.SeekableStream(
|
||
|
|
TarStream,
|
||
|
|
asynk.File.SeekError,
|
||
|
|
asynk.File.GetSeekPosError,
|
||
|
|
TarStream.seekTo,
|
||
|
|
TarStream.seekBy,
|
||
|
|
TarStream.getPos,
|
||
|
|
TarStream.getEndPos,
|
||
|
|
);
|
||
|
|
|
||
|
|
file: std.tar.Iterator(asynk.File.Reader).File,
|
||
|
|
start: usize,
|
||
|
|
|
||
|
|
pub fn init(file: std.tar.Iterator(asynk.File.Reader).File) !TarStream {
|
||
|
|
return .{
|
||
|
|
.file = file,
|
||
|
|
.start = try file.parent_reader.context.getPos(),
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn reader(file: TarStream) std.tar.Iterator(asynk.File.Reader).File.Reader {
|
||
|
|
return file.file.reader();
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn seekTo(self: TarStream, offset: u64) !void {
|
||
|
|
return self.file.parent_reader.context.seekTo(self.start + offset);
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn seekBy(self: TarStream, offset: i64) !void {
|
||
|
|
return self.file.parent_reader.context.seekBy(offset);
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn getPos(self: TarStream) !u64 {
|
||
|
|
return try self.file.parent_reader.context.getPos() - self.start;
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn getEndPos(self: TarStream) !u64 {
|
||
|
|
return self.file.size;
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn seekableStream(self: TarStream) TarStream.SeekableStream {
|
||
|
|
return .{ .context = self };
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
test "Read pickle (simple)" {
|
||
|
|
var arena = std.heap.ArenaAllocator.init(testing.allocator);
|
||
|
|
defer arena.deinit();
|
||
|
|
const allocator = arena.allocator();
|
||
|
|
const eval = @import("eval.zig");
|
||
|
|
const file = try asynk.File.open("zml/aio/torch/simple_test.pickle", .{ .mode = .read_only });
|
||
|
|
var data = try Decoder.init(allocator, file);
|
||
|
|
defer data.deinit();
|
||
|
|
var vals, var memo = try eval.evaluate(allocator, data.ops, true);
|
||
|
|
defer vals.deinit();
|
||
|
|
defer memo.deinit();
|
||
|
|
|
||
|
|
try testing.expect(vals.stack.len == 2);
|
||
|
|
// skip first value (frame)
|
||
|
|
try testing.expect(vals.stack[1] == .seq);
|
||
|
|
try testing.expect(vals.stack[1].seq[0] == .dict);
|
||
|
|
const entries = vals.stack[1].seq[1][0].seq[1];
|
||
|
|
try testing.expect(entries.len == 5);
|
||
|
|
for (entries, 0..) |kv, i| {
|
||
|
|
try testing.expect(kv == .seq);
|
||
|
|
try testing.expect(kv.seq[0] == .kv_tuple);
|
||
|
|
switch (i) {
|
||
|
|
0 => {
|
||
|
|
const key = kv.seq[1][0];
|
||
|
|
try testing.expect(key == .string);
|
||
|
|
try testing.expectEqualStrings("hello", key.string);
|
||
|
|
const value = kv.seq[1][1];
|
||
|
|
try testing.expect(value == .string);
|
||
|
|
try testing.expectEqualStrings("world", value.string);
|
||
|
|
},
|
||
|
|
1 => {
|
||
|
|
const key = kv.seq[1][0];
|
||
|
|
try testing.expect(key == .string);
|
||
|
|
try testing.expectEqualStrings("int", key.string);
|
||
|
|
const value = kv.seq[1][1];
|
||
|
|
try testing.expect(value == .int);
|
||
|
|
try testing.expect(value.int == 1);
|
||
|
|
},
|
||
|
|
2 => {
|
||
|
|
const key = kv.seq[1][0];
|
||
|
|
try testing.expect(key == .string);
|
||
|
|
try testing.expectEqualStrings("float", key.string);
|
||
|
|
const value = kv.seq[1][1];
|
||
|
|
try testing.expect(value == .float);
|
||
|
|
try testing.expectEqual(@as(f64, 3.141592), value.float);
|
||
|
|
},
|
||
|
|
3 => {
|
||
|
|
const key = kv.seq[1][0];
|
||
|
|
try testing.expect(key == .string);
|
||
|
|
try testing.expectEqualStrings("list", key.string);
|
||
|
|
const value = kv.seq[1][1];
|
||
|
|
try testing.expect(value == .seq);
|
||
|
|
try testing.expect(value.seq[0] == .list);
|
||
|
|
for (value.seq[1], 0..) |item, j| {
|
||
|
|
try testing.expect(item == .int);
|
||
|
|
try testing.expect(item.int == @as(i64, @intCast(j)));
|
||
|
|
}
|
||
|
|
},
|
||
|
|
4 => {
|
||
|
|
const key = kv.seq[1][0];
|
||
|
|
try testing.expect(key == .string);
|
||
|
|
try testing.expectEqualStrings("tuple", key.string);
|
||
|
|
const value = kv.seq[1][1];
|
||
|
|
try testing.expect(value == .seq);
|
||
|
|
try testing.expect(value.seq[0] == .tuple);
|
||
|
|
try testing.expect(value.seq[1][0] == .string);
|
||
|
|
try testing.expectEqualStrings("a", value.seq[1][0].string);
|
||
|
|
try testing.expect(value.seq[1][1] == .int);
|
||
|
|
try testing.expect(value.seq[1][1].int == 10);
|
||
|
|
},
|
||
|
|
else => unreachable,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
test "Read pickle (zipped)" {
|
||
|
|
var arena = std.heap.ArenaAllocator.init(testing.allocator);
|
||
|
|
defer arena.deinit();
|
||
|
|
const allocator = arena.allocator();
|
||
|
|
const file = try asynk.File.open("zml/aio/torch/simple.pt", .{ .mode = .read_only });
|
||
|
|
var data = try Decoder.init(allocator, file);
|
||
|
|
defer data.deinit();
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn isBadFilename(filename: []const u8) bool {
|
||
|
|
if (filename.len == 0 or filename[0] == '/')
|
||
|
|
return true;
|
||
|
|
|
||
|
|
var it = std.mem.splitScalar(u8, filename, '/');
|
||
|
|
while (it.next()) |part| {
|
||
|
|
if (std.mem.eql(u8, part, ".."))
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|