getFilename

        pub fn getFilename(self: Entry, stream: *File.Reader, filename_buf: []u8, options: ExtractOptions) ![]u8 {
            if (filename_buf.len < self.filename_len)
                return error.ZipInsufficientBuffer;
            switch (self.compression_method) {
                .store, .deflate => {},
                else => return error.UnsupportedCompressionMethod,
            }
            const filename = filename_buf[0..self.filename_len];
            {
                try stream.seekTo(self.header_zip_offset + @sizeOf(CentralDirectoryFileHeader));
                try stream.interface.readSliceAll(filename);
            }

            if (options.allow_backslashes) {
                std.mem.replaceScalar(u8, filename, '\\', '/');
            } else {
                if (std.mem.findScalar(u8, filename, '\\')) |_|
                    return error.ZipFilenameHasBackslash;
            }

            if (isBadFilename(filename))
                return error.ZipBadFilename;

            return filename;
        }