mirror of
https://github.com/node-red/node-red.git
synced 2023-10-10 13:36:53 +02:00
add "split/stream" ability to file in node
and add teste
This commit is contained in:
Dave Conway-Jones
parent
4f34980c9f
commit
b91c178200
@ -55,7 +55,9 @@
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<label for="node-input-format"><i class="fa fa-sign-out"></i> <span data-i18n="file.label.outputas"></span></label>
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<select id="node-input-format">
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<option value="utf8" data-i18n="file.output.utf8"></option>
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<option value="lines" data-i18n="file.output.lines"></option>
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<option value="" data-i18n="file.output.buffer"></option>
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<option value="stream" data-i18n="file.output.stream"></option>
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</select>
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</div>
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<div class="form-row">
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@ -83,6 +85,8 @@
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<p>The filename should be an absolute path, otherwise it will be relative to
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the working directory of the Node-RED process.</p>
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<p>On Windows, path separators may need to be escaped, for example: <code>\\Users\\myUser</code>.</p>
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<p>Optionally, a text file can be split into lines, outputting one message per line, or a binary file
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file into smaller buffer chunks, the chunk size is operating system dependant, but typically 64k (linux/mac) or 41k (Windows).</p>
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</script>
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<script type="text/javascript">
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@ -124,6 +128,7 @@
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name: {value:""},
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filename: {value:""},
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format: {value:"utf8"},
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chunk: {value:false}
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},
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color:"BurlyWood",
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inputs:1,
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@ -137,7 +142,18 @@
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},
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labelStyle: function() {
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return this.name?"node_label_italic":"";
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},
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oneditprepare: function() {
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$("#node-input-format").on("change",function() {
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if ($("#node-input-format").val() === "utf8") {
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$("#buffer-input-type").hide();
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$("#line-input-type").show();
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}
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else {
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$("#buffer-input-type").show();
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$("#line-input-type").hide();
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}
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});
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}
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});
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</script>
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@ -18,6 +18,7 @@ module.exports = function(RED) {
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"use strict";
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var fs = require("fs-extra");
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var os = require("os");
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var path = require("path");
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function FileNode(n) {
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RED.nodes.createNode(this,n);
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@ -26,15 +27,27 @@ module.exports = function(RED) {
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this.overwriteFile = n.overwriteFile.toString();
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this.createDir = n.createDir || false;
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var node = this;
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node.wstream = null;
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node.data = [];
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this.on("input",function(msg) {
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var filename = node.filename || msg.filename || "";
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if (!node.filename) {
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node.status({fill:"grey",shape:"dot",text:filename});
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if (!node.filename) { node.status({fill:"grey",shape:"dot",text:filename}); }
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if (filename === "") { node.warn(RED._("file.errors.nofilename")); }
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else if (node.overwriteFile === "delete") {
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fs.unlink(filename, function (err) {
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if (err) { node.error(RED._("file.errors.deletefail",{error:err.toString()}),msg); }
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else if (RED.settings.verbose) { node.log(RED._("file.status.deletedfile",{file:filename})); }
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});
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}
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if (filename === "") {
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node.warn(RED._("file.errors.nofilename"));
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} else if (msg.hasOwnProperty("payload") && (typeof msg.payload !== "undefined")) {
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else if (msg.hasOwnProperty("payload") && (typeof msg.payload !== "undefined")) {
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var dir = path.dirname(filename);
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if (node.createDir) {
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fs.ensureDir(dir, function(err) {
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if (err) { node.error(RED._("file.errors.createfail",{error:err.toString()}),msg); }
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});
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}
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var data = msg.payload;
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if ((typeof data === "object") && (!Buffer.isBuffer(data))) {
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data = JSON.stringify(data);
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@ -42,52 +55,26 @@ module.exports = function(RED) {
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if (typeof data === "boolean") { data = data.toString(); }
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if (typeof data === "number") { data = data.toString(); }
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if ((this.appendNewline) && (!Buffer.isBuffer(data))) { data += os.EOL; }
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data = new Buffer(data);
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if (this.overwriteFile === "true") {
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// using "binary" not {encoding:"binary"} to be 0.8 compatible for a while
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//fs.writeFile(filename, data, "binary", function (err) {
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fs.writeFile(filename, data, {encoding:"binary"}, function (err) {
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if (err) {
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if ((err.code === "ENOENT") && node.createDir) {
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fs.ensureFile(filename, function (err) {
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if (err) { node.error(RED._("file.errors.createfail",{error:err.toString()}),msg); }
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else {
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fs.writeFile(filename, data, "binary", function (err) {
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if (err) { node.error(RED._("file.errors.writefail",{error:err.toString()}),msg); }
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});
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}
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});
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}
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else { node.error(RED._("file.errors.writefail",{error:err.toString()}),msg); }
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node.data.push(new Buffer(data));
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while (node.data.length > 0) {
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if (this.overwriteFile === "true") {
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if (!node.wstream) {
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node.wstream = fs.createWriteStream(filename, { encoding:'binary', flags:'w' });
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node.wstream.on("error", function(err) {
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node.error(RED._("file.errors.writefail",{error:err.toString()}),msg);
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});
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}
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else if (RED.settings.verbose) { node.log(RED._("file.status.wrotefile",{file:filename})); }
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});
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}
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else if (this.overwriteFile === "delete") {
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fs.unlink(filename, function (err) {
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if (err) { node.error(RED._("file.errors.deletefail",{error:err.toString()}),msg); }
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else if (RED.settings.verbose) { node.log(RED._("file.status.deletedfile",{file:filename})); }
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});
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}
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else {
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// using "binary" not {encoding:"binary"} to be 0.8 compatible for a while longer
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//fs.appendFile(filename, data, "binary", function (err) {
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fs.appendFile(filename, data, {encoding:"binary"}, function (err) {
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if (err) {
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if ((err.code === "ENOENT") && node.createDir) {
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fs.ensureFile(filename, function (err) {
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if (err) { node.error(RED._("file.errors.createfail",{error:err.toString()}),msg); }
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else {
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fs.appendFile(filename, data, "binary", function (err) {
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if (err) { node.error(RED._("file.errors.appendfail",{error:err.toString()}),msg); }
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});
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}
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});
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}
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else { node.error(RED._("file.errors.appendfail",{error:err.toString()}),msg); }
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}
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else {
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if (!node.wstream) {
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node.wstream = fs.createWriteStream(filename, { encoding:'binary', flags:'a' });
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node.wstream.on("error", function(err) {
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node.error(RED._("file.errors.appendfail",{error:err.toString()}),msg);
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});
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}
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else if (RED.settings.verbose) { node.log(RED._("file.status.appendedfile",{file:filename})); }
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});
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}
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node.wstream.write(node.data.shift());
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}
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}
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});
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@ -100,14 +87,13 @@ module.exports = function(RED) {
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function FileInNode(n) {
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RED.nodes.createNode(this,n);
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this.filename = n.filename;
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this.format = n.format;
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this.chunk = false;
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if (this.format === "lines") { this.chunk = true; }
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if (this.format === "stream") { this.chunk = true; }
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var node = this;
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var options = {};
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if (this.format) {
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options['encoding'] = this.format;
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}
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this.on("input",function(msg) {
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var filename = node.filename || msg.filename || "";
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if (!node.filename) {
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@ -115,19 +101,82 @@ module.exports = function(RED) {
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}
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if (filename === "") {
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node.warn(RED._("file.errors.nofilename"));
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} else {
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}
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else {
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msg.filename = filename;
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fs.readFile(filename,options,function(err,data) {
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if (err) {
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node.error(err,msg);
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msg.error = err;
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delete msg.payload;
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} else {
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msg.payload = data;
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delete msg.error;
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}
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node.send(msg);
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});
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var lines = new Buffer.from([]);
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var spare = "";
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var count = 0;
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var type = "buffer";
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var ch = "";
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if (node.format === "lines") {
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ch = "\n";
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type = "string";
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}
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var hwm;
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var getout = false;
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var rs = fs.createReadStream(filename)
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.on('readable', function () {
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var chunk;
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var hwm = rs._readableState.highWaterMark;
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while (null !== (chunk = rs.read())) {
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if (node.chunk === true) {
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getout = true;
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if (node.format === "lines") {
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spare += chunk.toString();
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var bits = spare.split("\n");
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for (var i=0; i < bits.length - 1; i++) {
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var m = {
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payload:bits[i],
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topic:msg.topic,
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filename:msg.filename,
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parts:{index:count, ch:ch, type:type, id:msg._msgid}
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}
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count += 1;
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if ((chunk.length < hwm) && (bits[i+1].length === 0)) {
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m.parts.count = count;
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}
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node.send(m);
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}
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spare = bits[i];
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if (chunk.length !== hwm) { getout = false; }
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//console.log("LEFT",bits[i].length,bits[i]);
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}
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if (node.format === "stream") {
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var m = {
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payload:chunk,
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topic:msg.topic,
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filename:msg.filename,
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parts:{index:count, ch:ch, type:type, id:msg._msgid}
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}
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count += 1;
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if (chunk.length < hwm) { // last chunk is smaller that high water mark = eof
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getout = false;
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m.parts.count = count;
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}
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node.send(m);
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}
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}
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else {
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lines = Buffer.concat([lines,chunk]);
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}
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}
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})
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.on('error', function(err) {
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node.error('Error while reading file.', msg);
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})
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.on('end', function() {
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if (node.chunk === false) {
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if (node.format === "utf8") { msg.payload = lines.toString(); }
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else { msg.payload = lines; }
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node.send(msg);
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}
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else if (getout) { // last chunk same size as high water mark - have to send empty extra packet.
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var m = { parts:{index:count, count:count, ch:ch, type:type, id:msg._msgid} };
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node.send(m);
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}
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});
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}
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});
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this.on('close', function() {
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@ -183,8 +183,11 @@ describe('file Nodes', function() {
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it('should fail to write to a ro file', function(done) {
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// Stub file write so we can make writes fail
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var spy = sinon.stub(fs, 'writeFile', function(arg1,arg2,arg3,arg4) {
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arg4(new Error("Stub error message"));
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var spy = sinon.stub(fs, 'createWriteStream', function(arg1,arg2) {
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var ws = {};
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ws.on = function(e,d) { throw("Stub error message"); }
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ws.write = function(e,d) { }
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return ws;
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});
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var flow = [{id:"fileNode1", type:"file", name: "fileNode", "filename":fileToTest, "appendNewline":false, "overwriteFile":true}];
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@ -198,11 +201,11 @@ describe('file Nodes', function() {
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//console.log(logEvents);
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logEvents.should.have.length(1);
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logEvents[0][0].should.have.a.property('msg');
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logEvents[0][0].msg.toString().should.startWith("file.errors.writefail");
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logEvents[0][0].msg.toString().should.startWith("Stub error message");
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done();
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}
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catch(e) { done(e); }
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finally { fs.writeFile.restore(); }
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finally { fs.createWriteStream.restore(); }
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},wait);
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n1.receive({payload:"test"});
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});
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@ -210,7 +213,12 @@ describe('file Nodes', function() {
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it('should fail to append to a ro file', function(done) {
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// Stub file write so we can make writes fail
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var spy = sinon.stub(fs, 'appendFile', function(arg,arg2,arg3,arg4) { arg4(new Error("Stub error message")); });
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var spy = sinon.stub(fs, 'createWriteStream', function(arg1,arg2) {
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var ws = {};
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ws.on = function(e,d) { throw("Stub error message"); }
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ws.write = function(e,d) { }
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return ws;
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});
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var flow = [{id:"fileNode1", type:"file", name: "fileNode", "filename":fileToTest, "appendNewline":true, "overwriteFile":false}];
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helper.load(fileNode, flow, function() {
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@ -223,11 +231,11 @@ describe('file Nodes', function() {
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//console.log(logEvents);
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logEvents.should.have.length(1);
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logEvents[0][0].should.have.a.property('msg');
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logEvents[0][0].msg.toString().should.startWith("file.errors.appendfail");
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logEvents[0][0].msg.toString().should.startWith("Stub error message");
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done();
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}
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catch(e) { done(e); }
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finally { fs.appendFile.restore(); }
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finally { fs.createWriteStream.restore(); }
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},wait);
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n1.receive({payload:"test2"});
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});
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@ -287,7 +295,7 @@ describe('file Nodes', function() {
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it('should try to create a new directory if asked to do so (append)', function(done) {
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// Stub file write so we can make writes fail
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var fileToTest2 = path.join(resourcesDir,"a","50-file-test-file.txt");
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var spy = sinon.stub(fs, "ensureFile", function(arg1,arg2,arg3,arg4) { arg2(null); });
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var spy = sinon.stub(fs, "ensureDir", function(arg1,arg2,arg3,arg4) { arg2(null); });
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var flow = [{id:"fileNode1", type:"file", name: "fileNode", "filename":fileToTest2, "appendNewline":true, "overwriteFile":false, "createDir":true}];
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helper.load(fileNode, flow, function() {
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var n1 = helper.getNode("fileNode1");
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@ -303,7 +311,7 @@ describe('file Nodes', function() {
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done();
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}
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catch(e) { done(e); }
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finally { fs.ensureFile.restore(); }
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finally { fs.ensureDir.restore(); }
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},wait);
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n1.receive({payload:"test2"});
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});
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@ -338,7 +346,7 @@ describe('file Nodes', function() {
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it('should try to create a new directory if asked to do so (overwrite)', function(done) {
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// Stub file write so we can make writes fail
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var fileToTest2 = path.join(resourcesDir,"a","50-file-test-file.txt");
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var spy = sinon.stub(fs, "ensureFile", function(arg1,arg2,arg3,arg4) { arg2(null); });
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var spy = sinon.stub(fs, "ensureDir", function(arg1,arg2,arg3,arg4) { arg2(null); });
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var flow = [{id:"fileNode1", type:"file", name: "fileNode", "filename":fileToTest2, "appendNewline":true, "overwriteFile":true, "createDir":true}];
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helper.load(fileNode, flow, function() {
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@ -355,7 +363,7 @@ describe('file Nodes', function() {
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done();
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}
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catch(e) { done(e); }
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finally { fs.ensureFile.restore(); }
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finally { fs.ensureDir.restore(); }
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},wait);
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n1.receive({payload:"test2"});
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});
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@ -371,7 +379,7 @@ describe('file Nodes', function() {
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var wait = 150;
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beforeEach(function(done) {
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fs.writeFileSync(fileToTest, "File message line 1\File message line 2\n");
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fs.writeFileSync(fileToTest, "File message line 1\nFile message line 2\n");
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helper.startServer(done);
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});
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@ -392,60 +400,82 @@ describe('file Nodes', function() {
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});
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it('should read in a file and output a buffer', function(done) {
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var flow = [{id:"fileInNode1", type:"file in", name: "fileInNode", "filename":fileToTest, "format":"", wires:[["n2"]]},
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var flow = [{id:"fileInNode1", type:"file in", name:"fileInNode", "filename":fileToTest, "format":"", wires:[["n2"]]},
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{id:"n2", type:"helper"}];
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helper.load(fileNode, flow, function() {
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var n1 = helper.getNode("fileInNode1");
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var n2 = helper.getNode("n2");
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n2.on("input", function(msg) {
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msg.should.have.property('payload');
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msg.payload.should.have.length(39).and.be.a.Buffer;
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msg.payload.toString().should.equal("File message line 1\File message line 2\n");
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msg.payload.should.have.length(40).and.be.a.Buffer;
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msg.payload.toString().should.equal('File message line 1\nFile message line 2\n');
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done();
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});
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n1.receive({payload:""});
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});
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});
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// Commented out to make build pass on node v.0.8 - reinstate when we drop 0.8 support...
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//it('should read in a file and output a utf8 string', function(done) {
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//var flow = [{id:"fileInNode1", type:"file in", name: "fileInNode", "filename":fileToTest, "format":"utf8", wires:[["n2"]]},
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//{id:"n2", type:"helper"}];
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//helper.load(fileNode, flow, function() {
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//var n1 = helper.getNode("fileInNode1");
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//var n2 = helper.getNode("n2");
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//n2.on("input", function(msg) {
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//msg.should.have.property('payload');
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//msg.payload.should.have.length(39).and.be.a.string;
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//msg.payload.should.equal("File message line 1\File message line 2\n");
|
||||
//done();
|
||||
//});
|
||||
//n1.receive({payload:""});
|
||||
//});
|
||||
//});
|
||||
it('should read in a file and output a utf8 string', function(done) {
|
||||
var flow = [{id:"fileInNode1", type:"file in", name: "fileInNode", "filename":fileToTest, "format":"utf8", wires:[["n2"]]},
|
||||
{id:"n2", type:"helper"}];
|
||||
helper.load(fileNode, flow, function() {
|
||||
var n1 = helper.getNode("fileInNode1");
|
||||
var n2 = helper.getNode("n2");
|
||||
n2.on("input", function(msg) {
|
||||
msg.should.have.property('payload');
|
||||
msg.payload.should.have.length(40).and.be.a.string;
|
||||
msg.payload.should.equal("File message line 1\nFile message line 2\n");
|
||||
done();
|
||||
});
|
||||
n1.receive({payload:""});
|
||||
});
|
||||
});
|
||||
|
||||
// Commented out as we no longer need to warn of the very old deprecated behaviour
|
||||
//it('should warn if msg.props try to overide', function(done) {
|
||||
//var flow = [{id:"fileInNode1", type:"file in", name: "fileInNode", "filename":fileToTest, "format":"", wires:[["n2"]]},
|
||||
//{id:"n2", type:"helper"}];
|
||||
//helper.load(fileNode, flow, function() {
|
||||
//var n1 = helper.getNode("fileInNode1");
|
||||
//var n2 = helper.getNode("n2");
|
||||
//n2.on("input", function(msg) {
|
||||
//msg.should.have.property('payload');
|
||||
//msg.payload.should.have.length(39).and.be.a.Buffer;
|
||||
//msg.payload.toString().should.equal("File message line 1\File message line 2\n");
|
||||
//var logEvents = helper.log().args.filter(function(evt) {
|
||||
//return evt[0].type == "file in";
|
||||
//});
|
||||
//logEvents.should.have.length(1);
|
||||
//logEvents[0][0].should.have.a.property('msg');
|
||||
//logEvents[0][0].msg.toString().should.startWith("file.errors.nooverride");
|
||||
//done();
|
||||
//});
|
||||
//n1.receive({payload:"",filename:"foo.txt"});
|
||||
//});
|
||||
//});
|
||||
it('should read in a file and output split lines with parts', function(done) {
|
||||
var flow = [{id:"fileInNode1", type:"file in", name: "fileInNode", filename:fileToTest, format:"lines", wires:[["n2"]]},
|
||||
{id:"n2", type:"helper"}];
|
||||
helper.load(fileNode, flow, function() {
|
||||
var n1 = helper.getNode("fileInNode1");
|
||||
var n2 = helper.getNode("n2");
|
||||
var c = 0;
|
||||
n2.on("input", function(msg) {
|
||||
msg.should.have.property('payload');
|
||||
msg.payload.should.have.length(19).and.be.a.string;
|
||||
if (c === 0) {
|
||||
msg.payload.should.equal("File message line 1");
|
||||
c++;
|
||||
} else {
|
||||
msg.payload.should.equal("File message line 2");
|
||||
msg.should.have.property('parts');
|
||||
msg.parts.should.have.property('index',1);
|
||||
msg.parts.should.have.property('count',2);
|
||||
msg.parts.should.have.property('type','string');
|
||||
msg.parts.should.have.property('ch','\n');
|
||||
done();
|
||||
}
|
||||
});
|
||||
n1.receive({payload:""});
|
||||
});
|
||||
});
|
||||
|
||||
it('should read in a file and output a buffer with parts', function(done) {
|
||||
var flow = [{id:"fileInNode1", type:"file in", name: "fileInNode", filename:fileToTest, format:"stream", wires:[["n2"]]},
|
||||
{id:"n2", type:"helper"}];
|
||||
helper.load(fileNode, flow, function() {
|
||||
var n1 = helper.getNode("fileInNode1");
|
||||
var n2 = helper.getNode("n2");
|
||||
n2.on("input", function(msg) {
|
||||
msg.should.have.property('payload');
|
||||
msg.payload.should.have.length(40).and.be.a.Buffer;
|
||||
msg.should.have.property('parts');
|
||||
msg.parts.should.have.property('count',1);
|
||||
msg.parts.should.have.property('type','buffer');
|
||||
msg.parts.should.have.property('ch','');
|
||||
done();
|
||||
});
|
||||
n1.receive({payload:""});
|
||||
});
|
||||
});
|
||||
|
||||
it('should warn if no filename set', function(done) {
|
||||
var flow = [{id:"fileInNode1", type:"file in", name: "fileInNode", "format":""}];
|
||||
@ -474,8 +504,7 @@ describe('file Nodes', function() {
|
||||
});
|
||||
logEvents.should.have.length(1);
|
||||
logEvents[0][0].should.have.a.property('msg');
|
||||
//logEvents[0][0].msg.toString().should.equal("Error: ENOENT, open 'badfile'");
|
||||
logEvents[0][0].msg.toString().should.startWith("Error: ENOENT");
|
||||
logEvents[0][0].msg.toString().should.startWith("Error");
|
||||
done();
|
||||
},wait);
|
||||
n1.receive({payload:""});
|
||||
@ -483,5 +512,4 @@ describe('file Nodes', function() {
|
||||
});
|
||||
|
||||
});
|
||||
|
||||
});
|
||||
|
||||
Loading…
Reference in New Issue
Block a user