v1.2.0

Author: andris9

.travis.yml

@@ -1,10 +1,10 @@
 language: node_js
 node_js:
-  - 6
-  - 8
-  - 9
+    - 8
+    - 10
+    - 12
 before_install:
-  - npm install -g grunt-cli
+    - npm install -g grunt-cli
 notifications:
-  email:
-    - [email protected]
+    email:
+        - [email protected]

README.md

@@ -68,6 +68,7 @@ Where
     characters (or set to `false` to turn the soft wrapping off completely)
 -   **options.skipStartBytes** (Number) Optional. How many bytes to skip from output (default to 0)
 -   **options.limitOutbutBytes** (Number) Optional. How many bytes to return (defaults to all bytes)
+-   **options.startPadding** (String) Optional. Fills first line with provided padding string. Usually goes together with skipStartBytes to get line folding correct.
 
 **Example**
 

lib/libbase64.js

@@ -72,13 +72,14 @@ class Encoder extends Transform {
         this.options = options || {};
 
         if (this.options.lineLength !== false) {
-            this.options.lineLength = this.options.lineLength || 76;
+            this.options.lineLength = Number(this.options.lineLength) || 76;
         }
 
-        this.skipStartBytes = this.options.skipStartBytes || 0;
-        this.limitOutbutBytes = this.options.limitOutbutBytes || 0;
+        this.skipStartBytes = Number(this.options.skipStartBytes) || 0;
+        this.limitOutbutBytes = Number(this.options.limitOutbutBytes) || 0;
 
-        this._curLine = '';
+        // startPadding can be used together with skipStartBytes
+        this._curLine = this.options.startPadding || '';
         this._remainingBytes = false;
 
         this.inputBytes = 0;
@@ -112,6 +113,18 @@ class Encoder extends Transform {
         this.push(chunk);
     }
 
+    _getWrapped(str) {
+        let prefix = '';
+
+        str = wrap(str, this.options.lineLength);
+
+        if (prefix) {
+            str = prefix + str;
+        }
+
+        return str;
+    }
+
     _transform(chunk, encoding, done) {
         if (encoding !== 'buffer') {
             chunk = Buffer.from(chunk, encoding);
@@ -138,7 +151,7 @@ class Encoder extends Transform {
         let b64 = this._curLine + encode(chunk);
 
         if (this.options.lineLength) {
-            b64 = wrap(b64, this.options.lineLength);
+            b64 = this._getWrapped(b64);
 
             // remove last line as it is still most probably incomplete
             let lastLF = b64.lastIndexOf('\n');
@@ -166,7 +179,7 @@ class Encoder extends Transform {
         }
 
         if (this._curLine) {
-            this._curLine = wrap(this._curLine, this.options.lineLength);
+            this._curLine = this._getWrapped(this._curLine);
             this._writeChunk(Buffer.from(this._curLine, 'ascii'), true);
             this._curLine = '';
         }

package.json

@@ -1,6 +1,6 @@
 {
     "name": "libbase64",
-    "version": "1.1.0",
+    "version": "1.2.0",
     "description": "Encode and decode base64 encoded strings",
     "main": "lib/libbase64.js",
     "scripts": {
@@ -21,14 +21,14 @@
     },
     "homepage": "https://github.com/nodemailer/libbase64",
     "devDependencies": {
-        "chai": "^4.2.0",
-        "eslint-config-nodemailer": "^1.2.0",
-        "eslint-config-prettier": "^6.0.0",
-        "grunt": "^1.0.4",
-        "grunt-cli": "^1.3.2",
-        "grunt-eslint": "^22.0.0",
-        "grunt-mocha-test": "^0.13.3",
-        "mocha": "^6.2.0"
+        "chai": "4.2.0",
+        "eslint-config-nodemailer": "1.2.0",
+        "eslint-config-prettier": "6.0.0",
+        "grunt": "1.0.4",
+        "grunt-cli": "1.3.2",
+        "grunt-eslint": "22.0.0",
+        "grunt-mocha-test": "0.13.3",
+        "mocha": "6.2.0"
     },
     "dependencies": {}
 }