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Add fixed conversion modes to base64 node

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to close #401
This commit is contained in:
Dave Conway-Jones
2018-02-03 15:08:05 +00:00
parent b406b32909
commit f9ac210a41
3 changed files with 50 additions and 24 deletions
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60
parsers/base64/70-base64.js
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@@ -3,35 +3,51 @@ module.exports = function(RED) {
"use strict";
function Base64Node(n) {
RED.nodes.createNode(this,n);
this.property = n.property||"payload";
this.action = n.action || "";
this.property = n.property || "payload";
var node = this;
this.on("input", function(msg) {
var value = RED.util.getMessageProperty(msg,node.property);
if (value !== undefined) {
if (Buffer.isBuffer(value)) {
// Take binary buffer and make into a base64 string
value = value.toString('base64');
if (node.action === "") {
if (Buffer.isBuffer(value)) {
// Take binary buffer and make into a base64 string
value = value.toString('base64');
RED.util.setMessageProperty(msg,node.property,value);
node.send(msg);
}
else if (typeof value === "string") {
// Take base64 string and make into binary buffer
var load = value.replace(/\s+/g,''); // remove any whitespace
//var load = value.replace(/[\t\r\n\f]+/g,'');
//var load = value;
var regexp = new RegExp('^[A-Za-z0-9+\/=]*$'); // check it only contains valid characters
if ( regexp.test(load) && (load.length % 4 === 0) ) {
value = Buffer.from(load,'base64').toString('binary');
RED.util.setMessageProperty(msg,node.property,value);
node.send(msg);
}
else {
node.log("Not a Base64 string - maybe we should encode it...");
value = Buffer.from(value).toString('base64');
RED.util.setMessageProperty(msg,node.property,value);
node.send(msg);
}
}
else {
node.warn("This node only handles strings or buffers.");
}
}
if (node.action === "str") {
value = Buffer.from(value).toString('base64');
RED.util.setMessageProperty(msg,node.property,value);
node.send(msg);
}
else if (typeof value === "string") {
// Take base64 string and make into binary buffer
var load = value.replace(/\s+/g,''); // remove any whitespace
var regexp = new RegExp('^[A-Za-z0-9+\/=]*$'); // check it only contains valid characters
if ( regexp.test(load) && (load.length % 4 === 0) ) {
value = new Buffer(load,'base64');
RED.util.setMessageProperty(msg,node.property,value);
node.send(msg);
}
else {
//node.log("Not a Base64 string - maybe we should encode it...");
value = (new Buffer(value,"binary")).toString('base64');
RED.util.setMessageProperty(msg,node.property,value);
node.send(msg);
}
}
else {
node.warn("This node only handles strings or buffers.");
if (node.action === "b64") {
var load = value.replace(/\s+/g,'');
value = Buffer.from(load,'base64').toString('binary');
RED.util.setMessageProperty(msg,node.property,value);
node.send(msg);
}
}
else { node.warn("No property found to process"); }