From 5b10a10743b8459f64fe83e0ff420f69da79c9a4 Mon Sep 17 00:00:00 2001 From: Yuchen Pei Date: Thu, 28 Jul 2022 15:32:10 +1000 Subject: Moving scripts and utilities into a new utilities dir --- .../node_modules/iconv-lite/encodings/internal.js | 190 --------------------- 1 file changed, 190 deletions(-) delete mode 100644 hash_script/node_modules/iconv-lite/encodings/internal.js (limited to 'hash_script/node_modules/iconv-lite/encodings/internal.js') diff --git a/hash_script/node_modules/iconv-lite/encodings/internal.js b/hash_script/node_modules/iconv-lite/encodings/internal.js deleted file mode 100644 index 4223a98..0000000 --- a/hash_script/node_modules/iconv-lite/encodings/internal.js +++ /dev/null @@ -1,190 +0,0 @@ -"use strict"; -var Buffer = require("buffer").Buffer; - -// Export Node.js internal encodings. - -module.exports = { - // Encodings - utf8: { type: "_internal", bomAware: true}, - cesu8: { type: "_internal", bomAware: true}, - unicode11utf8: "utf8", - - ucs2: { type: "_internal", bomAware: true}, - utf16le: "ucs2", - - binary: { type: "_internal" }, - iso88591: "binary", - - base64: { type: "_internal" }, - hex: { type: "_internal" }, - - // Codec. - _internal: InternalCodec, -}; - -//------------------------------------------------------------------------------ - -function InternalCodec(codecOptions, iconv) { - this.enc = codecOptions.encodingName; - this.bomAware = codecOptions.bomAware; - - if (this.enc === "base64") - this.encoder = InternalEncoderBase64; - else if (this.enc === "cesu8") { - this.enc = "utf8"; // Use utf8 for decoding. - this.encoder = InternalEncoderCesu8; - - // Add decoder for versions of Node not supporting CESU-8 - if (new Buffer('eda0bdedb2a9', 'hex').toString() !== '💩') { - this.decoder = InternalDecoderCesu8; - this.defaultCharUnicode = iconv.defaultCharUnicode; - } - } -} - -InternalCodec.prototype.encoder = InternalEncoder; -InternalCodec.prototype.decoder = InternalDecoder; - -//------------------------------------------------------------------------------ - -// We use node.js internal decoder. Its signature is the same as ours. -var StringDecoder = require('string_decoder').StringDecoder; - -if (!StringDecoder.prototype.end) // Node v0.8 doesn't have this method. - StringDecoder.prototype.end = function() {}; - - -function InternalDecoder(options, codec) { - StringDecoder.call(this, codec.enc); -} - -InternalDecoder.prototype = StringDecoder.prototype; - - -//------------------------------------------------------------------------------ -// Encoder is mostly trivial - -function InternalEncoder(options, codec) { - this.enc = codec.enc; -} - -InternalEncoder.prototype.write = function(str) { - return new Buffer(str, this.enc); -} - -InternalEncoder.prototype.end = function() { -} - - -//------------------------------------------------------------------------------ -// Except base64 encoder, which must keep its state. - -function InternalEncoderBase64(options, codec) { - this.prevStr = ''; -} - -InternalEncoderBase64.prototype.write = function(str) { - str = this.prevStr + str; - var completeQuads = str.length - (str.length % 4); - this.prevStr = str.slice(completeQuads); - str = str.slice(0, completeQuads); - - return new Buffer(str, "base64"); -} - -InternalEncoderBase64.prototype.end = function() { - return new Buffer(this.prevStr, "base64"); -} - - -//------------------------------------------------------------------------------ -// CESU-8 encoder is also special. - -function InternalEncoderCesu8(options, codec) { -} - -InternalEncoderCesu8.prototype.write = function(str) { - var buf = new Buffer(str.length * 3), bufIdx = 0; - for (var i = 0; i < str.length; i++) { - var charCode = str.charCodeAt(i); - // Naive implementation, but it works because CESU-8 is especially easy - // to convert from UTF-16 (which all JS strings are encoded in). - if (charCode < 0x80) - buf[bufIdx++] = charCode; - else if (charCode < 0x800) { - buf[bufIdx++] = 0xC0 + (charCode >>> 6); - buf[bufIdx++] = 0x80 + (charCode & 0x3f); - } - else { // charCode will always be < 0x10000 in javascript. - buf[bufIdx++] = 0xE0 + (charCode >>> 12); - buf[bufIdx++] = 0x80 + ((charCode >>> 6) & 0x3f); - buf[bufIdx++] = 0x80 + (charCode & 0x3f); - } - } - return buf.slice(0, bufIdx); -} - -InternalEncoderCesu8.prototype.end = function() { -} - -//------------------------------------------------------------------------------ -// CESU-8 decoder is not implemented in Node v4.0+ - -function InternalDecoderCesu8(options, codec) { - this.acc = 0; - this.contBytes = 0; - this.accBytes = 0; - this.defaultCharUnicode = codec.defaultCharUnicode; -} - -InternalDecoderCesu8.prototype.write = function(buf) { - var acc = this.acc, contBytes = this.contBytes, accBytes = this.accBytes, - res = ''; - for (var i = 0; i < buf.length; i++) { - var curByte = buf[i]; - if ((curByte & 0xC0) !== 0x80) { // Leading byte - if (contBytes > 0) { // Previous code is invalid - res += this.defaultCharUnicode; - contBytes = 0; - } - - if (curByte < 0x80) { // Single-byte code - res += String.fromCharCode(curByte); - } else if (curByte < 0xE0) { // Two-byte code - acc = curByte & 0x1F; - contBytes = 1; accBytes = 1; - } else if (curByte < 0xF0) { // Three-byte code - acc = curByte & 0x0F; - contBytes = 2; accBytes = 1; - } else { // Four or more are not supported for CESU-8. - res += this.defaultCharUnicode; - } - } else { // Continuation byte - if (contBytes > 0) { // We're waiting for it. - acc = (acc << 6) | (curByte & 0x3f); - contBytes--; accBytes++; - if (contBytes === 0) { - // Check for overlong encoding, but support Modified UTF-8 (encoding NULL as C0 80) - if (accBytes === 2 && acc < 0x80 && acc > 0) - res += this.defaultCharUnicode; - else if (accBytes === 3 && acc < 0x800) - res += this.defaultCharUnicode; - else - // Actually add character. - res += String.fromCharCode(acc); - } - } else { // Unexpected continuation byte - res += this.defaultCharUnicode; - } - } - } - this.acc = acc; this.contBytes = contBytes; this.accBytes = accBytes; - return res; -} - -InternalDecoderCesu8.prototype.end = function() { - var res = 0; - if (this.contBytes > 0) - res += this.defaultCharUnicode; - return res; -} -- cgit v1.2.3