�PNG  IHDR��;���IDATx��ܻn�0���K�� �)(�pA��� ���7�LeG{�� �§㻢|��ذaÆ 6lذaÆ 6lذaÆ 6lom��$^�y���ذag�5bÆ 6lذaÆ 6lذa{���� 6lذaÆ �`����}H�Fkm�,�m����Ӫ���ô�ô!� �x�|'ܢ˟;�E:���9�&ᶒ�}�{�v]�n&�6� �h��_��t�ڠ͵-ҫ���Z;��Z$�.�P���k�ž)�!��o���>}l�eQfJ�T��u і���چ��\��X=8��Rن4`Vw�l�>����n�G�^��i�s��"ms�$�u��i��?w�bs[m�6�K4���O���.�4��%����/����b�C%��t ��M�ז� �-l�G6�mrz2���s�%�9��s@���-�k�9�=���)������k�B5����\��+͂�Zsٲ ��Rn��~G���R���C����� �wIcI��n7jJ���hۛNCS|���j0��8y�iHKֶۛ�k�Ɉ+;Sz������L/��F�*\��Ԕ�#"5��m�2��[S��������=�g��n�a�P�e�ғ�L�� lذaÆ 6l�^k��̱aÆ 6lذaÆ 6lذa;���� �_��ذaÆ 6lذaÆ 6lذaÆ ���R���IEND�B` 'use strict'; const inherits = require('inherits'); const Reporter = require('../base/reporter').Reporter; const Buffer = require('safer-buffer').Buffer; function DecoderBuffer(base, options) { Reporter.call(this, options); if (!Buffer.isBuffer(base)) { this.error('Input not Buffer'); return; } this.base = base; this.offset = 0; this.length = base.length; } inherits(DecoderBuffer, Reporter); exports.DecoderBuffer = DecoderBuffer; DecoderBuffer.isDecoderBuffer = function isDecoderBuffer(data) { if (data instanceof DecoderBuffer) { return true; } // Or accept compatible API const isCompatible = typeof data === 'object' && Buffer.isBuffer(data.base) && data.constructor.name === 'DecoderBuffer' && typeof data.offset === 'number' && typeof data.length === 'number' && typeof data.save === 'function' && typeof data.restore === 'function' && typeof data.isEmpty === 'function' && typeof data.readUInt8 === 'function' && typeof data.skip === 'function' && typeof data.raw === 'function'; return isCompatible; }; DecoderBuffer.prototype.save = function save() { return { offset: this.offset, reporter: Reporter.prototype.save.call(this) }; }; DecoderBuffer.prototype.restore = function restore(save) { // Return skipped data const res = new DecoderBuffer(this.base); res.offset = save.offset; res.length = this.offset; this.offset = save.offset; Reporter.prototype.restore.call(this, save.reporter); return res; }; DecoderBuffer.prototype.isEmpty = function isEmpty() { return this.offset === this.length; }; DecoderBuffer.prototype.readUInt8 = function readUInt8(fail) { if (this.offset + 1 <= this.length) return this.base.readUInt8(this.offset++, true); else return this.error(fail || 'DecoderBuffer overrun'); }; DecoderBuffer.prototype.skip = function skip(bytes, fail) { if (!(this.offset + bytes <= this.length)) return this.error(fail || 'DecoderBuffer overrun'); const res = new DecoderBuffer(this.base); // Share reporter state res._reporterState = this._reporterState; res.offset = this.offset; res.length = this.offset + bytes; this.offset += bytes; return res; }; DecoderBuffer.prototype.raw = function raw(save) { return this.base.slice(save ? save.offset : this.offset, this.length); }; function EncoderBuffer(value, reporter) { if (Array.isArray(value)) { this.length = 0; this.value = value.map(function(item) { if (!EncoderBuffer.isEncoderBuffer(item)) item = new EncoderBuffer(item, reporter); this.length += item.length; return item; }, this); } else if (typeof value === 'number') { if (!(0 <= value && value <= 0xff)) return reporter.error('non-byte EncoderBuffer value'); this.value = value; this.length = 1; } else if (typeof value === 'string') { this.value = value; this.length = Buffer.byteLength(value); } else if (Buffer.isBuffer(value)) { this.value = value; this.length = value.length; } else { return reporter.error('Unsupported type: ' + typeof value); } } exports.EncoderBuffer = EncoderBuffer; EncoderBuffer.isEncoderBuffer = function isEncoderBuffer(data) { if (data instanceof EncoderBuffer) { return true; } // Or accept compatible API const isCompatible = typeof data === 'object' && data.constructor.name === 'EncoderBuffer' && typeof data.length === 'number' && typeof data.join === 'function'; return isCompatible; }; EncoderBuffer.prototype.join = function join(out, offset) { if (!out) out = Buffer.alloc(this.length); if (!offset) offset = 0; if (this.length === 0) return out; if (Array.isArray(this.value)) { this.value.forEach(function(item) { item.join(out, offset); offset += item.length; }); } else { if (typeof this.value === 'number') out[offset] = this.value; else if (typeof this.value === 'string') out.write(this.value, offset); else if (Buffer.isBuffer(this.value)) this.value.copy(out, offset); offset += this.length; } return out; };