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天文台pc/tianwentai-ui/node_modules/minizlib/dist/commonjs/index.js 14.5 KB
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  "use strict";
  var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
      if (k2 === undefined) k2 = k;
      var desc = Object.getOwnPropertyDescriptor(m, k);
      if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
        desc = { enumerable: true, get: function() { return m[k]; } };
      }
      Object.defineProperty(o, k2, desc);
  }) : (function(o, m, k, k2) {
      if (k2 === undefined) k2 = k;
      o[k2] = m[k];
  }));
  var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
      Object.defineProperty(o, "default", { enumerable: true, value: v });
  }) : function(o, v) {
      o["default"] = v;
  });
  var __importStar = (this && this.__importStar) || (function () {
      var ownKeys = function(o) {
          ownKeys = Object.getOwnPropertyNames || function (o) {
              var ar = [];
              for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
              return ar;
          };
          return ownKeys(o);
      };
      return function (mod) {
          if (mod && mod.__esModule) return mod;
          var result = {};
          if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
          __setModuleDefault(result, mod);
          return result;
      };
  })();
  var __importDefault = (this && this.__importDefault) || function (mod) {
      return (mod && mod.__esModule) ? mod : { "default": mod };
  };
  Object.defineProperty(exports, "__esModule", { value: true });
  exports.ZstdDecompress = exports.ZstdCompress = exports.BrotliDecompress = exports.BrotliCompress = exports.Unzip = exports.InflateRaw = exports.DeflateRaw = exports.Gunzip = exports.Gzip = exports.Inflate = exports.Deflate = exports.Zlib = exports.ZlibError = exports.constants = void 0;
  const assert_1 = __importDefault(require("assert"));
  const buffer_1 = require("buffer");
  const minipass_1 = require("minipass");
  const realZlib = __importStar(require("zlib"));
  const constants_js_1 = require("./constants.js");
  var constants_js_2 = require("./constants.js");
  Object.defineProperty(exports, "constants", { enumerable: true, get: function () { return constants_js_2.constants; } });
  const OriginalBufferConcat = buffer_1.Buffer.concat;
  const desc = Object.getOwnPropertyDescriptor(buffer_1.Buffer, 'concat');
  const noop = (args) => args;
  const passthroughBufferConcat = desc?.writable === true || desc?.set !== undefined
      ? (makeNoOp) => {
          buffer_1.Buffer.concat = makeNoOp ? noop : OriginalBufferConcat;
      }
      : (_) => { };
  const _superWrite = Symbol('_superWrite');
  class ZlibError extends Error {
      code;
      errno;
      constructor(err, origin) {
          super('zlib: ' + err.message, { cause: err });
          this.code = err.code;
          this.errno = err.errno;
          /* c8 ignore next */
          if (!this.code)
              this.code = 'ZLIB_ERROR';
          this.message = 'zlib: ' + err.message;
          Error.captureStackTrace(this, origin ?? this.constructor);
      }
      get name() {
          return 'ZlibError';
      }
  }
  exports.ZlibError = ZlibError;
  // the Zlib class they all inherit from
  // This thing manages the queue of requests, and returns
  // true or false if there is anything in the queue when
  // you call the .write() method.
  const _flushFlag = Symbol('flushFlag');
  class ZlibBase extends minipass_1.Minipass {
      #sawError = false;
      #ended = false;
      #flushFlag;
      #finishFlushFlag;
      #fullFlushFlag;
      #handle;
      #onError;
      get sawError() {
          return this.#sawError;
      }
      get handle() {
          return this.#handle;
      }
      /* c8 ignore start */
      get flushFlag() {
          return this.#flushFlag;
      }
      /* c8 ignore stop */
      constructor(opts, mode) {
          if (!opts || typeof opts !== 'object')
              throw new TypeError('invalid options for ZlibBase constructor');
          //@ts-ignore
          super(opts);
          /* c8 ignore start */
          this.#flushFlag = opts.flush ?? 0;
          this.#finishFlushFlag = opts.finishFlush ?? 0;
          this.#fullFlushFlag = opts.fullFlushFlag ?? 0;
          /* c8 ignore stop */
          //@ts-ignore
          if (typeof realZlib[mode] !== 'function') {
              throw new TypeError('Compression method not supported: ' + mode);
          }
          // this will throw if any options are invalid for the class selected
          try {
              // @types/node doesn't know that it exports the classes, but they're there
              //@ts-ignore
              this.#handle = new realZlib[mode](opts);
          }
          catch (er) {
              // make sure that all errors get decorated properly
              throw new ZlibError(er, this.constructor);
          }
          this.#onError = err => {
              // no sense raising multiple errors, since we abort on the first one.
              if (this.#sawError)
                  return;
              this.#sawError = true;
              // there is no way to cleanly recover.
              // continuing only obscures problems.
              this.close();
              this.emit('error', err);
          };
          this.#handle?.on('error', er => this.#onError(new ZlibError(er)));
          this.once('end', () => this.close);
      }
      close() {
          if (this.#handle) {
              this.#handle.close();
              this.#handle = undefined;
              this.emit('close');
          }
      }
      reset() {
          if (!this.#sawError) {
              (0, assert_1.default)(this.#handle, 'zlib binding closed');
              //@ts-ignore
              return this.#handle.reset?.();
          }
      }
      flush(flushFlag) {
          if (this.ended)
              return;
          if (typeof flushFlag !== 'number')
              flushFlag = this.#fullFlushFlag;
          this.write(Object.assign(buffer_1.Buffer.alloc(0), { [_flushFlag]: flushFlag }));
      }
      end(chunk, encoding, cb) {
          /* c8 ignore start */
          if (typeof chunk === 'function') {
              cb = chunk;
              encoding = undefined;
              chunk = undefined;
          }
          if (typeof encoding === 'function') {
              cb = encoding;
              encoding = undefined;
          }
          /* c8 ignore stop */
          if (chunk) {
              if (encoding)
                  this.write(chunk, encoding);
              else
                  this.write(chunk);
          }
          this.flush(this.#finishFlushFlag);
          this.#ended = true;
          return super.end(cb);
      }
      get ended() {
          return this.#ended;
      }
      // overridden in the gzip classes to do portable writes
      [_superWrite](data) {
          return super.write(data);
      }
      write(chunk, encoding, cb) {
          // process the chunk using the sync process
          // then super.write() all the outputted chunks
          if (typeof encoding === 'function')
              (cb = encoding), (encoding = 'utf8');
          if (typeof chunk === 'string')
              chunk = buffer_1.Buffer.from(chunk, encoding);
          if (this.#sawError)
              return;
          (0, assert_1.default)(this.#handle, 'zlib binding closed');
          // _processChunk tries to .close() the native handle after it's done, so we
          // intercept that by temporarily making it a no-op.
          // diving into the node:zlib internals a bit here
          const nativeHandle = this.#handle
              ._handle;
          const originalNativeClose = nativeHandle.close;
          nativeHandle.close = () => { };
          const originalClose = this.#handle.close;
          this.#handle.close = () => { };
          // It also calls `Buffer.concat()` at the end, which may be convenient
          // for some, but which we are not interested in as it slows us down.
          passthroughBufferConcat(true);
          let result = undefined;
          try {
              const flushFlag = typeof chunk[_flushFlag] === 'number'
                  ? chunk[_flushFlag]
                  : this.#flushFlag;
              result = this.#handle._processChunk(chunk, flushFlag);
              // if we don't throw, reset it back how it was
              passthroughBufferConcat(false);
          }
          catch (err) {
              // or if we do, put Buffer.concat() back before we emit error
              // Error events call into user code, which may call Buffer.concat()
              passthroughBufferConcat(false);
              this.#onError(new ZlibError(err, this.write));
          }
          finally {
              if (this.#handle) {
                  // Core zlib resets `_handle` to null after attempting to close the
                  // native handle. Our no-op handler prevented actual closure, but we
                  // need to restore the `._handle` property.
                  ;
                  this.#handle._handle =
                      nativeHandle;
                  nativeHandle.close = originalNativeClose;
                  this.#handle.close = originalClose;
                  // `_processChunk()` adds an 'error' listener. If we don't remove it
                  // after each call, these handlers start piling up.
                  this.#handle.removeAllListeners('error');
                  // make sure OUR error listener is still attached tho
              }
          }
          if (this.#handle)
              this.#handle.on('error', er => this.#onError(new ZlibError(er, this.write)));
          let writeReturn;
          if (result) {
              if (Array.isArray(result) && result.length > 0) {
                  const r = result[0];
                  // The first buffer is always `handle._outBuffer`, which would be
                  // re-used for later invocations; so, we always have to copy that one.
                  writeReturn = this[_superWrite](buffer_1.Buffer.from(r));
                  for (let i = 1; i < result.length; i++) {
                      writeReturn = this[_superWrite](result[i]);
                  }
              }
              else {
                  // either a single Buffer or an empty array
                  writeReturn = this[_superWrite](buffer_1.Buffer.from(result));
              }
          }
          if (cb)
              cb();
          return writeReturn;
      }
  }
  class Zlib extends ZlibBase {
      #level;
      #strategy;
      constructor(opts, mode) {
          opts = opts || {};
          opts.flush = opts.flush || constants_js_1.constants.Z_NO_FLUSH;
          opts.finishFlush = opts.finishFlush || constants_js_1.constants.Z_FINISH;
          opts.fullFlushFlag = constants_js_1.constants.Z_FULL_FLUSH;
          super(opts, mode);
          this.#level = opts.level;
          this.#strategy = opts.strategy;
      }
      params(level, strategy) {
          if (this.sawError)
              return;
          if (!this.handle)
              throw new Error('cannot switch params when binding is closed');
          // no way to test this without also not supporting params at all
          /* c8 ignore start */
          if (!this.handle.params)
              throw new Error('not supported in this implementation');
          /* c8 ignore stop */
          if (this.#level !== level || this.#strategy !== strategy) {
              this.flush(constants_js_1.constants.Z_SYNC_FLUSH);
              (0, assert_1.default)(this.handle, 'zlib binding closed');
              // .params() calls .flush(), but the latter is always async in the
              // core zlib. We override .flush() temporarily to intercept that and
              // flush synchronously.
              const origFlush = this.handle.flush;
              this.handle.flush = (flushFlag, cb) => {
                  /* c8 ignore start */
                  if (typeof flushFlag === 'function') {
                      cb = flushFlag;
                      flushFlag = this.flushFlag;
                  }
                  /* c8 ignore stop */
                  this.flush(flushFlag);
                  cb?.();
              };
              try {
                  ;
                  this.handle.params(level, strategy);
              }
              finally {
                  this.handle.flush = origFlush;
              }
              /* c8 ignore start */
              if (this.handle) {
                  this.#level = level;
                  this.#strategy = strategy;
              }
              /* c8 ignore stop */
          }
      }
  }
  exports.Zlib = Zlib;
  // minimal 2-byte header
  class Deflate extends Zlib {
      constructor(opts) {
          super(opts, 'Deflate');
      }
  }
  exports.Deflate = Deflate;
  class Inflate extends Zlib {
      constructor(opts) {
          super(opts, 'Inflate');
      }
  }
  exports.Inflate = Inflate;
  class Gzip extends Zlib {
      #portable;
      constructor(opts) {
          super(opts, 'Gzip');
          this.#portable = opts && !!opts.portable;
      }
      [_superWrite](data) {
          if (!this.#portable)
              return super[_superWrite](data);
          // we'll always get the header emitted in one first chunk
          // overwrite the OS indicator byte with 0xFF
          this.#portable = false;
          data[9] = 255;
          return super[_superWrite](data);
      }
  }
  exports.Gzip = Gzip;
  class Gunzip extends Zlib {
      constructor(opts) {
          super(opts, 'Gunzip');
      }
  }
  exports.Gunzip = Gunzip;
  // raw - no header
  class DeflateRaw extends Zlib {
      constructor(opts) {
          super(opts, 'DeflateRaw');
      }
  }
  exports.DeflateRaw = DeflateRaw;
  class InflateRaw extends Zlib {
      constructor(opts) {
          super(opts, 'InflateRaw');
      }
  }
  exports.InflateRaw = InflateRaw;
  // auto-detect header.
  class Unzip extends Zlib {
      constructor(opts) {
          super(opts, 'Unzip');
      }
  }
  exports.Unzip = Unzip;
  class Brotli extends ZlibBase {
      constructor(opts, mode) {
          opts = opts || {};
          opts.flush = opts.flush || constants_js_1.constants.BROTLI_OPERATION_PROCESS;
          opts.finishFlush =
              opts.finishFlush || constants_js_1.constants.BROTLI_OPERATION_FINISH;
          opts.fullFlushFlag = constants_js_1.constants.BROTLI_OPERATION_FLUSH;
          super(opts, mode);
      }
  }
  class BrotliCompress extends Brotli {
      constructor(opts) {
          super(opts, 'BrotliCompress');
      }
  }
  exports.BrotliCompress = BrotliCompress;
  class BrotliDecompress extends Brotli {
      constructor(opts) {
          super(opts, 'BrotliDecompress');
      }
  }
  exports.BrotliDecompress = BrotliDecompress;
  class Zstd extends ZlibBase {
      constructor(opts, mode) {
          opts = opts || {};
          opts.flush = opts.flush || constants_js_1.constants.ZSTD_e_continue;
          opts.finishFlush = opts.finishFlush || constants_js_1.constants.ZSTD_e_end;
          opts.fullFlushFlag = constants_js_1.constants.ZSTD_e_flush;
          super(opts, mode);
      }
  }
  class ZstdCompress extends Zstd {
      constructor(opts) {
          super(opts, 'ZstdCompress');
      }
  }
  exports.ZstdCompress = ZstdCompress;
  class ZstdDecompress extends Zstd {
      constructor(opts) {
          super(opts, 'ZstdDecompress');
      }
  }
  exports.ZstdDecompress = ZstdDecompress;
  //# sourceMappingURL=index.js.map