diff options
Diffstat (limited to 'dgbuilder/dgeflows/node_modules/body-parser/node_modules/iconv-lite/encodings/utf7.js')
-rw-r--r-- | dgbuilder/dgeflows/node_modules/body-parser/node_modules/iconv-lite/encodings/utf7.js | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/dgbuilder/dgeflows/node_modules/body-parser/node_modules/iconv-lite/encodings/utf7.js b/dgbuilder/dgeflows/node_modules/body-parser/node_modules/iconv-lite/encodings/utf7.js deleted file mode 100644 index cd284f7e..00000000 --- a/dgbuilder/dgeflows/node_modules/body-parser/node_modules/iconv-lite/encodings/utf7.js +++ /dev/null @@ -1,286 +0,0 @@ - -// UTF-7 codec, according to https://tools.ietf.org/html/rfc2152 -// Below is UTF-7-IMAP codec, according to http://tools.ietf.org/html/rfc3501#section-5.1.3 - -exports.utf7 = function(options) { - return { - encoder: function utf7Encoder() { - return { - write: utf7EncoderWrite, - end: function() {}, - - iconv: options.iconv, - }; - }, - decoder: function utf7Decoder() { - return { - write: utf7DecoderWrite, - end: utf7DecoderEnd, - - iconv: options.iconv, - inBase64: false, - base64Accum: '', - }; - }, - }; -}; - - -var nonDirectChars = /[^A-Za-z0-9'\(\),-\.\/:\? \n\r\t]+/g; - -// Direct: \n, \r, \t, 0x20, 0x27-0x29, (0x2B), 0x2C-0x3A, 0x3F, 0x41-0x5A, 0x61-0x7A - -function utf7EncoderWrite(str) { - // Naive implementation. - // Non-direct chars are encoded as "+<base64>-"; single "+" char is encoded as "+-". - return new Buffer(str.replace(nonDirectChars, function(chunk) { - return "+" + (chunk === '+' ? '' : - this.iconv.encode(chunk, 'utf16-be').toString('base64').replace(/=+$/, '')) - + "-"; - }.bind(this))); -} - - -var base64Regex = /[A-Za-z0-9\/+]/; -var base64Chars = []; -for (var i = 0; i < 256; i++) - base64Chars[i] = base64Regex.test(String.fromCharCode(i)); - -var plusChar = '+'.charCodeAt(0), - minusChar = '-'.charCodeAt(0), - andChar = '&'.charCodeAt(0); - -function utf7DecoderWrite(buf) { - var res = "", lastI = 0, - inBase64 = this.inBase64, - base64Accum = this.base64Accum; - - // The decoder is more involved as we must handle chunks in stream. - - for (var i = 0; i < buf.length; i++) { - if (!inBase64) { // We're in direct mode. - // Write direct chars until '+' - if (buf[i] == plusChar) { - res += this.iconv.decode(buf.slice(lastI, i), "ascii"); // Write direct chars. - lastI = i+1; - inBase64 = true; - } - } else { // We decode base64. - if (!base64Chars[buf[i]]) { // Base64 ended. - if (i == lastI && buf[i] == minusChar) {// "+-" -> "+" - res += "+"; - } else { - var b64str = base64Accum + buf.slice(lastI, i).toString(); - res += this.iconv.decode(new Buffer(b64str, 'base64'), "utf16-be"); - } - - if (buf[i] != minusChar) // Minus is absorbed after base64. - i--; - - lastI = i+1; - inBase64 = false; - base64Accum = ''; - } - } - } - - if (!inBase64) { - res += this.iconv.decode(buf.slice(lastI), "ascii"); // Write direct chars. - } else { - var b64str = base64Accum + buf.slice(lastI).toString(); - - var canBeDecoded = b64str.length - (b64str.length % 8); // Minimal chunk: 2 quads -> 2x3 bytes -> 3 chars. - base64Accum = b64str.slice(canBeDecoded); // The rest will be decoded in future. - b64str = b64str.slice(0, canBeDecoded); - - res += this.iconv.decode(new Buffer(b64str, 'base64'), "utf16-be"); - } - - this.inBase64 = inBase64; - this.base64Accum = base64Accum; - - return res; -} - -function utf7DecoderEnd() { - var res = ""; - if (this.inBase64 && this.base64Accum.length > 0) - res = this.iconv.decode(new Buffer(this.base64Accum, 'base64'), "utf16-be"); - - this.inBase64 = false; - this.base64Accum = ''; - return res; -} - - -// UTF-7-IMAP codec. -// RFC3501 Sec. 5.1.3 Modified UTF-7 (http://tools.ietf.org/html/rfc3501#section-5.1.3) -// Differences: -// * Base64 part is started by "&" instead of "+" -// * Direct characters are 0x20-0x7E, except "&" (0x26) -// * In Base64, "," is used instead of "/" -// * Base64 must not be used to represent direct characters. -// * No implicit shift back from Base64 (should always end with '-') -// * String must end in non-shifted position. -// * "-&" while in base64 is not allowed. - - -exports.utf7imap = function(options) { - return { - encoder: function utf7ImapEncoder() { - return { - write: utf7ImapEncoderWrite, - end: utf7ImapEncoderEnd, - - iconv: options.iconv, - inBase64: false, - base64Accum: new Buffer(6), - base64AccumIdx: 0, - }; - }, - decoder: function utf7ImapDecoder() { - return { - write: utf7ImapDecoderWrite, - end: utf7ImapDecoderEnd, - - iconv: options.iconv, - inBase64: false, - base64Accum: '', - }; - }, - }; -}; - - -function utf7ImapEncoderWrite(str) { - var inBase64 = this.inBase64, - base64Accum = this.base64Accum, - base64AccumIdx = this.base64AccumIdx, - buf = new Buffer(str.length*5 + 10), bufIdx = 0; - - for (var i = 0; i < str.length; i++) { - var uChar = str.charCodeAt(i); - if (0x20 <= uChar && uChar <= 0x7E) { // Direct character or '&'. - if (inBase64) { - if (base64AccumIdx > 0) { - bufIdx += buf.write(base64Accum.slice(0, base64AccumIdx).toString('base64').replace(/\//g, ',').replace(/=+$/, ''), bufIdx); - base64AccumIdx = 0; - } - - buf[bufIdx++] = minusChar; // Write '-', then go to direct mode. - inBase64 = false; - } - - if (!inBase64) { - buf[bufIdx++] = uChar; // Write direct character - - if (uChar === andChar) // Ampersand -> '&-' - buf[bufIdx++] = minusChar; - } - - } else { // Non-direct character - if (!inBase64) { - buf[bufIdx++] = andChar; // Write '&', then go to base64 mode. - inBase64 = true; - } - if (inBase64) { - base64Accum[base64AccumIdx++] = uChar >> 8; - base64Accum[base64AccumIdx++] = uChar & 0xFF; - - if (base64AccumIdx == base64Accum.length) { - bufIdx += buf.write(base64Accum.toString('base64').replace(/\//g, ','), bufIdx); - base64AccumIdx = 0; - } - } - } - } - - this.inBase64 = inBase64; - this.base64AccumIdx = base64AccumIdx; - - return buf.slice(0, bufIdx); -} - -function utf7ImapEncoderEnd() { - var buf = new Buffer(10), bufIdx = 0; - if (this.inBase64) { - if (this.base64AccumIdx > 0) { - bufIdx += buf.write(this.base64Accum.slice(0, this.base64AccumIdx).toString('base64').replace(/\//g, ',').replace(/=+$/, ''), bufIdx); - this.base64AccumIdx = 0; - } - - buf[bufIdx++] = minusChar; // Write '-', then go to direct mode. - this.inBase64 = false; - } - - return buf.slice(0, bufIdx); -} - - -var base64IMAPChars = base64Chars.slice(); -base64IMAPChars[','.charCodeAt(0)] = true; - -function utf7ImapDecoderWrite(buf) { - var res = "", lastI = 0, - inBase64 = this.inBase64, - base64Accum = this.base64Accum; - - // The decoder is more involved as we must handle chunks in stream. - // It is forgiving, closer to standard UTF-7 (for example, '-' is optional at the end). - - for (var i = 0; i < buf.length; i++) { - if (!inBase64) { // We're in direct mode. - // Write direct chars until '&' - if (buf[i] == andChar) { - res += this.iconv.decode(buf.slice(lastI, i), "ascii"); // Write direct chars. - lastI = i+1; - inBase64 = true; - } - } else { // We decode base64. - if (!base64IMAPChars[buf[i]]) { // Base64 ended. - if (i == lastI && buf[i] == minusChar) { // "&-" -> "&" - res += "&"; - } else { - var b64str = base64Accum + buf.slice(lastI, i).toString().replace(/,/g, '/'); - res += this.iconv.decode(new Buffer(b64str, 'base64'), "utf16-be"); - } - - if (buf[i] != minusChar) // Minus may be absorbed after base64. - i--; - - lastI = i+1; - inBase64 = false; - base64Accum = ''; - } - } - } - - if (!inBase64) { - res += this.iconv.decode(buf.slice(lastI), "ascii"); // Write direct chars. - } else { - var b64str = base64Accum + buf.slice(lastI).toString().replace(/,/g, '/'); - - var canBeDecoded = b64str.length - (b64str.length % 8); // Minimal chunk: 2 quads -> 2x3 bytes -> 3 chars. - base64Accum = b64str.slice(canBeDecoded); // The rest will be decoded in future. - b64str = b64str.slice(0, canBeDecoded); - - res += this.iconv.decode(new Buffer(b64str, 'base64'), "utf16-be"); - } - - this.inBase64 = inBase64; - this.base64Accum = base64Accum; - - return res; -} - -function utf7ImapDecoderEnd() { - var res = ""; - if (this.inBase64 && this.base64Accum.length > 0) - res = this.iconv.decode(new Buffer(this.base64Accum, 'base64'), "utf16-be"); - - this.inBase64 = false; - this.base64Accum = ''; - return res; -} - - |