Initial

test/imaps/node_modules/libqp/.eslintrc

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+{
+    "rules": {
+        "indent": 0,
+        "no-await-in-loop": 0,
+        "require-atomic-updates": 0
+    },
+    "globals": {
+        "BigInt": true
+    },
+    "extends": ["nodemailer", "prettier"],
+    "parserOptions": {
+        "ecmaVersion": 2018,
+        "sourceType": "script"
+    }
+}

test/imaps/node_modules/libqp/.prettierrc.js

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+module.exports = {
+    printWidth: 160,
+    tabWidth: 4,
+    singleQuote: true,
+    endOfLine: 'lf',
+    trailingComma: 'none',
+    arrowParens: 'avoid'
+};

test/imaps/node_modules/libqp/LICENSE

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+Copyright (c) 2014-2022 Andris Reinman
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

test/imaps/node_modules/libqp/README.md

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+# libqp
+
+Encode and decode quoted-printable strings according to [RFC2045](http://tools.ietf.org/html/rfc2045#section-6.7).
+
+## Usage
+
+Install with npm
+
+```
+npm install libqp
+```
+
+Require in your script
+
+```javascript
+const libqp = require('libqp');
+```
+
+### Encode values
+
+Encode Buffer objects or unicode strings with
+
+```
+libqp.encode(val) → String
+```
+
+Where
+
+-   **val** is a Buffer or an unicode string
+
+**Example**
+
+```javascript
+libqp.encode('jõgeva');
+// j=C3=B5geva
+```
+
+### Wrap encoded values
+
+Quoted-Printable encoded lines are limited to 76 characters but `encode` method might return lines longer than the limit.
+
+To enforce soft line breaks on lines longer than 76 (or any other length) characters, use `wrap`
+
+```
+libqp.wrap(str[, lineLength]) → String
+```
+
+Where
+
+-   **str** is a Quoted-Printable encoded string
+-   **lineLength** (defaults to 76) is the maximum allowed line length. Any longer line will be soft wrapped
+
+**Example**
+
+```javascript
+libqp.wrap('abc j=C3=B5geva', 10);
+// abc j=\r\n
+// =C3=B5geva
+```
+
+### Transform Streams
+
+`libqp` makes it possible to encode and decode streams with `libqp.Encoder` and `libqp.Decoder` constructors.
+
+### Encoder Stream
+
+Create new Encoder Stream with
+
+```
+const encoder = new libqp.Encoder([options])
+```
+
+Where
+
+-   **options** is the optional stream options object with an additional option `lineLength` if you want to use any other line length than the default 76 characters (or set to `false` to turn the soft wrapping off completely)
+
+**Example**
+
+The following example script reads in a file, encodes it to Quoted-Printable and saves the output to a file.
+
+```javascript
+var libqp = require('libqp');
+var fs = require('fs');
+var source = fs.createReadStream('source.txt');
+var encoded = fs.createReadStream('encoded.txt');
+var encoder = new libqp.Encoder();
+
+source.pipe(encoder).pipe(encoded);
+```
+
+### Decoder Stream
+
+Create new Decoder Stream with
+
+```
+const decoder = new libqp.Decoder([options])
+```
+
+Where
+
+-   **options** is the optional stream options object
+
+**Example**
+
+The following example script reads in a file in Quoted-Printable encoding, decodes it and saves the output to a file.
+
+```javascript
+const libqp = require('libqp');
+const fs = require('fs');
+let encoded = fs.createReadStream('encoded.txt');
+let dest = fs.createReadStream('dest.txt');
+let decoder = new libqp.Decoder();
+
+encoded.pipe(decoder).pipe(dest);
+```
+
+## License
+
+**MIT**

test/imaps/node_modules/libqp/lib/libqp.js

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+/* eslint no-useless-escape: 0 */
+
+'use strict';
+
+const stream = require('stream');
+const Transform = stream.Transform;
+
+/**
+ * Encodes a Buffer into a Quoted-Printable encoded string
+ *
+ * @param {Buffer} buffer Buffer to convert
+ * @returns {String} Quoted-Printable encoded string
+ */
+function encode(buffer) {
+    if (typeof buffer === 'string') {
+        buffer = Buffer.from(buffer, 'utf-8');
+    }
+
+    // usable characters that do not need encoding
+    let ranges = [
+        // https://tools.ietf.org/html/rfc2045#section-6.7
+        [0x09], // <TAB>
+        [0x0a], // <LF>
+        [0x0d], // <CR>
+        [0x20, 0x3c], // <SP>!"#$%&'()*+,-./0123456789:;
+        [0x3e, 0x7e] // >?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}
+    ];
+    let result = '';
+    let ord;
+
+    for (let i = 0, len = buffer.length; i < len; i++) {
+        ord = buffer[i];
+        // if the char is in allowed range, then keep as is, unless it is a ws in the end of a line
+        if (checkRanges(ord, ranges) && !((ord === 0x20 || ord === 0x09) && (i === len - 1 || buffer[i + 1] === 0x0a || buffer[i + 1] === 0x0d))) {
+            result += String.fromCharCode(ord);
+            continue;
+        }
+        result += '=' + (ord < 0x10 ? '0' : '') + ord.toString(16).toUpperCase();
+    }
+
+    return result;
+}
+
+/**
+ * Decodes a Quoted-Printable encoded string to a Buffer object
+ *
+ * @param {String} str Quoted-Printable encoded string
+ * @returns {Buffer} Decoded value
+ */
+function decode(str) {
+    str = (str || '')
+        .toString()
+        // remove invalid whitespace from the end of lines
+        .replace(/[\t ]+$/gm, '')
+        // remove soft line breaks
+        .replace(/\=(?:\r?\n|$)/g, '');
+
+    let encodedBytesCount = (str.match(/\=[\da-fA-F]{2}/g) || []).length,
+        bufferLength = str.length - encodedBytesCount * 2,
+        chr,
+        hex,
+        buffer = Buffer.alloc(bufferLength),
+        bufferPos = 0;
+
+    for (let i = 0, len = str.length; i < len; i++) {
+        chr = str.charAt(i);
+        if (chr === '=' && (hex = str.substr(i + 1, 2)) && /[\da-fA-F]{2}/.test(hex)) {
+            buffer[bufferPos++] = parseInt(hex, 16);
+            i += 2;
+            continue;
+        }
+        buffer[bufferPos++] = chr.charCodeAt(0);
+    }
+
+    return buffer;
+}
+
+/**
+ * Adds soft line breaks to a Quoted-Printable string
+ *
+ * @param {String} str Quoted-Printable encoded string that might need line wrapping
+ * @param {Number} [lineLength=76] Maximum allowed length for a line
+ * @returns {String} Soft-wrapped Quoted-Printable encoded string
+ */
+function wrap(str, lineLength) {
+    str = (str || '').toString();
+    lineLength = lineLength || 76;
+
+    if (str.length <= lineLength) {
+        return str;
+    }
+
+    let pos = 0,
+        len = str.length,
+        match,
+        code,
+        line,
+        lineMargin = Math.floor(lineLength / 3),
+        result = '';
+
+    // insert soft linebreaks where needed
+    while (pos < len) {
+        line = str.substr(pos, lineLength);
+        if ((match = line.match(/\r\n/))) {
+            line = line.substr(0, match.index + match[0].length);
+            result += line;
+            pos += line.length;
+            continue;
+        }
+
+        if (line.substr(-1) === '\n') {
+            // nothing to change here
+            result += line;
+            pos += line.length;
+            continue;
+        } else if ((match = line.substr(-lineMargin).match(/\n.*?$/))) {
+            // truncate to nearest line break
+            line = line.substr(0, line.length - (match[0].length - 1));
+            result += line;
+            pos += line.length;
+            continue;
+        } else if (line.length > lineLength - lineMargin && (match = line.substr(-lineMargin).match(/[ \t\.,!\?][^ \t\.,!\?]*$/))) {
+            // truncate to nearest space
+            line = line.substr(0, line.length - (match[0].length - 1));
+        } else if (line.match(/\=[\da-f]{0,2}$/i)) {
+            // push incomplete encoding sequences to the next line
+            if ((match = line.match(/\=[\da-f]{0,1}$/i))) {
+                line = line.substr(0, line.length - match[0].length);
+            }
+
+            // ensure that utf-8 sequences are not split
+            while (line.length > 3 && line.length < len - pos && !line.match(/^(?:=[\da-f]{2}){1,4}$/i) && (match = line.match(/\=[\da-f]{2}$/gi))) {
+                code = parseInt(match[0].substr(1, 2), 16);
+                if (code < 128) {
+                    break;
+                }
+
+                line = line.substr(0, line.length - 3);
+
+                if (code >= 0xc0) {
+                    break;
+                }
+            }
+        }
+
+        if (pos + line.length < len && line.substr(-1) !== '\n') {
+            if (line.length === lineLength && line.match(/\=[\da-f]{2}$/i)) {
+                line = line.substr(0, line.length - 3);
+            } else if (line.length === lineLength) {
+                line = line.substr(0, line.length - 1);
+            }
+            pos += line.length;
+            line += '=\r\n';
+        } else {
+            pos += line.length;
+        }
+
+        result += line;
+    }
+
+    return result;
+}
+
+/**
+ * Helper function to check if a number is inside provided ranges
+ *
+ * @param {Number} nr Number to check for
+ * @param {Array} ranges An Array of allowed values
+ * @returns {Boolean} True if the value was found inside allowed ranges, false otherwise
+ */
+function checkRanges(nr, ranges) {
+    for (let i = ranges.length - 1; i >= 0; i--) {
+        if (!ranges[i].length) {
+            continue;
+        }
+        if (ranges[i].length === 1 && nr === ranges[i][0]) {
+            return true;
+        }
+        if (ranges[i].length === 2 && nr >= ranges[i][0] && nr <= ranges[i][1]) {
+            return true;
+        }
+    }
+    return false;
+}
+
+/**
+ * Creates a transform stream for encoding data to Quoted-Printable encoding
+ *
+ * @constructor
+ * @param {Object} options Stream options
+ * @param {Number} [options.lineLength=76] Maximum lenght for lines, set to false to disable wrapping
+ */
+class Encoder extends Transform {
+    constructor(options) {
+        super();
+
+        // init Transform
+        this.options = options || {};
+
+        if (this.options.lineLength !== false) {
+            this.options.lineLength = this.options.lineLength || 76;
+        }
+
+        this._curLine = '';
+
+        this.inputBytes = 0;
+        this.outputBytes = 0;
+
+        Transform.call(this, this.options);
+    }
+
+    _transform(chunk, encoding, done) {
+        let qp;
+
+        if (encoding !== 'buffer') {
+            chunk = Buffer.from(chunk, encoding);
+        }
+
+        if (!chunk || !chunk.length) {
+            return done();
+        }
+
+        this.inputBytes += chunk.length;
+
+        if (this.options.lineLength) {
+            qp = this._curLine + encode(chunk);
+            qp = wrap(qp, this.options.lineLength);
+            qp = qp.replace(/(^|\n)([^\n]*)$/, (match, lineBreak, lastLine) => {
+                this._curLine = lastLine;
+                return lineBreak;
+            });
+
+            if (qp) {
+                this.outputBytes += qp.length;
+                this.push(qp);
+            }
+        } else {
+            qp = encode(chunk);
+            this.outputBytes += qp.length;
+            this.push(qp, 'ascii');
+        }
+
+        done();
+    }
+
+    _flush(done) {
+        if (this._curLine) {
+            this.outputBytes += this._curLine.length;
+            this.push(this._curLine, 'ascii');
+        }
+        done();
+    }
+}
+
+/**
+ * Creates a transform stream for decoding Quoted-Printable encoded strings
+ *
+ * @constructor
+ * @param {Object} options Stream options
+ */
+class Decoder extends Transform {
+    constructor(options) {
+        options = options || {};
+        super(options);
+
+        // init Transform
+        this.options = options;
+        this._curLine = '';
+
+        this.inputBytes = 0;
+        this.outputBytes = 0;
+    }
+
+    _transform(chunk, encoding, done) {
+        let qp, buf;
+
+        chunk = chunk.toString('ascii');
+
+        if (!chunk || !chunk.length) {
+            return done();
+        }
+
+        this.inputBytes += chunk.length;
+
+        qp = this._curLine + chunk;
+        this._curLine = '';
+        qp = qp.replace(/\=[^\n]?$/, lastLine => {
+            this._curLine = lastLine;
+            return '';
+        });
+
+        if (qp) {
+            buf = decode(qp);
+            this.outputBytes += buf.length;
+            this.push(buf);
+        }
+
+        done();
+    }
+
+    _flush(done) {
+        let buf;
+        if (this._curLine) {
+            buf = decode(this._curLine);
+            this.outputBytes += buf.length;
+            this.push(buf);
+        }
+        done();
+    }
+}
+
+// expose to the world
+module.exports = {
+    encode,
+    decode,
+    wrap,
+    Encoder,
+    Decoder
+};

test/imaps/node_modules/libqp/package.json

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+{
+    "name": "libqp",
+    "version": "2.0.1",
+    "description": "Encode and decode quoted-printable strings according to rfc2045",
+    "main": "lib/libqp.js",
+    "scripts": {
+        "test": "node --test test/"
+    },
+    "repository": {
+        "type": "git",
+        "url": "git://github.com/andris9/libqp.git"
+    },
+    "keywords": [
+        "quoted-printable",
+        "mime"
+    ],
+    "author": "Andris Reinman",
+    "license": "MIT",
+    "bugs": {
+        "url": "https://github.com/andris9/libqp/issues"
+    },
+    "homepage": "https://github.com/andris9/libqp",
+    "devDependencies": {
+        "eslint-config-nodemailer": "1.2.0",
+        "eslint-config-prettier": "8.5.0"
+    }
+}

test/imaps/node_modules/libqp/test/libqp-test.js

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+'use strict';
+
+const test = require('node:test');
+const assert = require('node:assert').strict;
+
+const libqp = require('../lib/libqp');
+
+test('Encoding tests', async t => {
+    await t.test('simple string', async () => {
+        const encoded = libqp.encode('tere jõgeva');
+
+        assert.strictEqual(encoded, 'tere j=C3=B5geva');
+    });
+
+    await t.test('stream', async () => {
+        let input = 'tere jõgeva';
+        let encoder = new libqp.Encoder();
+
+        let encoded = await new Promise((resolve, reject) => {
+            let chunks = [];
+            encoder.on('readable', () => {
+                let chunk;
+
+                while ((chunk = encoder.read()) !== null) {
+                    chunks.push(chunk);
+                }
+            });
+            encoder.on('end', () => {
+                resolve(Buffer.concat(chunks).toString());
+            });
+            encoder.on('Error', err => {
+                reject(err);
+            });
+
+            encoder.end(Buffer.from(input));
+        });
+
+        assert.strictEqual(encoded, 'tere j=C3=B5geva');
+    });
+});