ext/node/polyfills/_zlib_binding.mjs - main - githubmirror/deno

ext/node/polyfills/_zlib_binding.mjs
165 строк3 KB
Nathan Whitaker
perf: lazy-load more modules in the snapshot (#34061)
19 май 2026, 02:37
19 май 2026, 02:37eb4061f
// Copyright 2018-2026 the Deno authors. MIT license.

// deno-lint-ignore-file

// https://github.com/nodeca/pako/blob/master/lib/zlib/constants.js
(function () {
const { core } = __bootstrap;
const Z_NO_FLUSH = 0;
const Z_PARTIAL_FLUSH = 1;
const Z_SYNC_FLUSH = 2;
const Z_FULL_FLUSH = 3;
const Z_FINISH = 4;
const Z_BLOCK = 5;
const Z_TREES = 6;
const Z_OK = 0;
const Z_STREAM_END = 1;
const Z_NEED_DICT = 2;
const Z_ERRNO = -1;
const Z_STREAM_ERROR = -2;
const Z_DATA_ERROR = -3;
const Z_MEM_ERROR = -4;
const Z_BUF_ERROR = -5;
const Z_VERSION_ERROR = -6;
const Z_NO_COMPRESSION = 0;
const Z_BEST_SPEED = 1;
const Z_BEST_COMPRESSION = 9;
const Z_DEFAULT_COMPRESSION = -1;
const Z_FILTERED = 1;
const Z_HUFFMAN_ONLY = 2;
const Z_RLE = 3;
const Z_FIXED = 4;
const Z_DEFAULT_STRATEGY = 0;
const Z_BINARY = 0;
const Z_TEXT = 1;
const Z_UNKNOWN = 2;
const Z_DEFLATED = 8;

// zlib modes
const NONE = 0;
const DEFLATE = 1;
const INFLATE = 2;
const GZIP = 3;
const GUNZIP = 4;
const DEFLATERAW = 5;
const INFLATERAW = 6;
const UNZIP = 7;
const BROTLI_DECODE = 8;
const BROTLI_ENCODE = 9;
const ZSTD_COMPRESS = 10;
const ZSTD_DECOMPRESS = 11;

const Z_MIN_WINDOWBITS = 8;
const Z_MAX_WINDOWBITS = 15;
const Z_DEFAULT_WINDOWBITS = 15;
const Z_MIN_CHUNK = 64;
const Z_MAX_CHUNK = 0x7fffffff;
const Z_DEFAULT_CHUNK = 16 * 1024;
const Z_MIN_MEMLEVEL = 1;
const Z_MAX_MEMLEVEL = 9;
const Z_DEFAULT_MEMLEVEL = 8;
const Z_MIN_LEVEL = -1;
const Z_MAX_LEVEL = 9;
const Z_DEFAULT_LEVEL = Z_DEFAULT_COMPRESSION;

const BROTLI_OPERATION_PROCESS = 0;
const BROTLI_OPERATION_FLUSH = 1;
const BROTLI_OPERATION_FINISH = 2;
const BROTLI_OPERATION_EMIT_METADATA = 3;

const {
  BrotliDecoder,
  BrotliEncoder,
  op_zlib_crc32,
  op_zlib_crc32_string,
  Zlib,
  ZstdCompress,
  ZstdDecompress,
} = core.ops;

function crc32(buf, crc) {
  if (typeof buf === "string") {
    return op_zlib_crc32_string(buf, crc);
  }
  if (buf instanceof DataView) {
    buf = new Uint8Array(buf.buffer, buf.byteOffset, buf.byteLength);
  }
  return op_zlib_crc32(buf, crc);
}

const __default_export__ = {
  BrotliDecoder,
  BrotliEncoder,
  Zlib,
  ZstdCompress,
  ZstdDecompress,
  crc32,
};

return {
  BrotliDecoder,
  BrotliEncoder,
  crc32,
  Zlib,
  ZstdCompress,
  ZstdDecompress,
  Z_NO_FLUSH,
  Z_PARTIAL_FLUSH,
  Z_SYNC_FLUSH,
  Z_FULL_FLUSH,
  Z_FINISH,
  Z_BLOCK,
  Z_TREES,
  Z_OK,
  Z_STREAM_END,
  Z_NEED_DICT,
  Z_ERRNO,
  Z_STREAM_ERROR,
  Z_DATA_ERROR,
  Z_MEM_ERROR,
  Z_BUF_ERROR,
  Z_VERSION_ERROR,
  Z_NO_COMPRESSION,
  Z_BEST_SPEED,
  Z_BEST_COMPRESSION,
  Z_DEFAULT_COMPRESSION,
  Z_FILTERED,
  Z_HUFFMAN_ONLY,
  Z_RLE,
  Z_FIXED,
  Z_DEFAULT_STRATEGY,
  Z_BINARY,
  Z_TEXT,
  Z_UNKNOWN,
  Z_DEFLATED,
  NONE,
  DEFLATE,
  INFLATE,
  GZIP,
  GUNZIP,
  DEFLATERAW,
  INFLATERAW,
  UNZIP,
  BROTLI_DECODE,
  BROTLI_ENCODE,
  ZSTD_COMPRESS,
  ZSTD_DECOMPRESS,
  Z_MIN_WINDOWBITS,
  Z_MAX_WINDOWBITS,
  Z_DEFAULT_WINDOWBITS,
  Z_MIN_CHUNK,
  Z_MAX_CHUNK,
  Z_DEFAULT_CHUNK,
  Z_MIN_MEMLEVEL,
  Z_MAX_MEMLEVEL,
  Z_DEFAULT_MEMLEVEL,
  Z_MIN_LEVEL,
  Z_MAX_LEVEL,
  Z_DEFAULT_LEVEL,
  BROTLI_OPERATION_PROCESS,
  BROTLI_OPERATION_FLUSH,
  BROTLI_OPERATION_FINISH,
  BROTLI_OPERATION_EMIT_METADATA,
  default: __default_export__,
};
})();