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Code Issues Releases Wiki Activity

Add File In node

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This commit is contained in:
Nick O'Leary 2014-04-30 22:48:30 +01:00
parent 1df963e0ed
commit d0b6fd078c
2 changed files with 70 additions and 5 deletions
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45
nodes/core/storage/50-file.html
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@ -1,5 +1,5 @@
<!--
Copyright 2013 IBM Corp.
Copyright 2013, 2014 IBM Corp.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
@ -37,11 +37,29 @@
<script type="text/x-red" data-help-name="file">
<p>Writes <b>msg.payload</b> to the file specified, e.g. to create a log.</p>
<p>The filename can be overridden by the <code>.filename</code> property
of the incoming message.</p>
<p>The filename can be overridden by the <code>filename</code> property of the incoming message.</p>
<p>A newline is added to every message. But this can be turned off if required, for example, to allow binary files to be written.</p>
<p>The default behaviour is to append to the file. This can be changed to overwrite the file each time, for example if you want to output a "static" web page or report.</p>
<p>If a <code>.delete</code> property exists then the file will be deleted instead.</p>
<p>If a <code>delete</code> property exists then the file will be deleted instead.</p>
</script>
<script type="text/x-red" data-template-name="file in">
<div class="form-row">
<label for="node-input-filename"><i class="icon-file"></i> Filename</label>
<input type="text" id="node-input-filename" placeholder="Filename">
</div>
<div class="form-row">
<label>Output as</label>
<select id="node-input-format">
<option value="utf8">a utf8 string</option>
<option value="">a Buffer</option>
</select>
</div>
</script>
<script type="text/x-red" data-help-name="file in">
<p>Reads the specified file and sends the content as <b>msg.payload</b>.</p>
<p>The filename can be overridden by the <code>filename</code> property of the incoming message.</p>
</script>
<script type="text/javascript">
@ -66,4 +84,23 @@
}
});
RED.nodes.registerType('file in',{
category: 'storage-input',
defaults: {
name: {value:""},
filename: {value:""},
format: {value:"utf8"},
},
color:"BurlyWood",
inputs:1,
outputs:1,
icon: "file.png",
label: function() {
return this.name||this.filename;
},
labelStyle: function() {
return this.name?"node_label_italic":"";
}
});
</script>

30
nodes/core/storage/50-file.js
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@ -1,5 +1,5 @@
/**
* Copyright 2013 IBM Corp.
* Copyright 2013, 2014 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -60,3 +60,31 @@ function FileNode(n) {
});
}
RED.nodes.registerType("file",FileNode);
function FileInNode(n) {
RED.nodes.createNode(this,n);
this.filename = n.filename;
this.format = n.format;
var node = this;
var options = {};
if (this.format) {
options['encoding'] = this.format;
}
this.on("input",function(msg) {
var filename = msg.filename || this.filename;
if (filename == "") {
node.warn('No filename specified');
} else {
fs.readFile(filename,options,function(err,data) {
if (err) {
node.warn(err);
} else {
node.send({payload:data});
}
});
}
});
}
RED.nodes.registerType("file in",FileInNode);