tiny.cook.digestFile

1pub fn digestFile(io: std.Io, file: std.Io.File) ![32]u8 {2    const stat = try file.stat(io);3    var hasher = Sha256.init(.{});4    var buffer: [64 * 1024]u8 = undefined;5    var offset: u64 = 0;6    while (offset < stat.size) {7        const wanted: usize = @intCast(@min(stat.size - offset, buffer.len));8        const count = try file.readPositionalAll(io, buffer[0..wanted], offset);9        if (count != wanted) return error.ShortRead;10        hasher.update(buffer[0..count]);11        offset += count;12    }13    var digest: [32]u8 = undefined;14    hasher.final(&digest);15    return digest;16}

1pub const digestFile = cache.digestFile;