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node-red/nodes/core/storage/50-file.html

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<script type="text/x-red" data-template-name="file">
<div class="form-row node-input-filename">
<label for="node-input-filename"><i class="fa fa-file"></i> <span data-i18n="file.label.filename"></span></label>
<input id="node-input-filename" type="text">
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</div>
<div class="form-row">
<label for="node-input-overwriteFile"><i class="fa fa-random"></i> <span data-i18n="file.label.action"></span></label>
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<select type="text" id="node-input-overwriteFile" style="width: 250px;">
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<option value="false" data-i18n="file.action.append"></option>
<option value="true" data-i18n="file.action.overwrite"></option>
<option value="delete" data-i18n="file.action.delete"></option>
</select>
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</div>
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<div class="form-row form-row-file-write-options">
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<label>&nbsp;</label>
<input type="checkbox" id="node-input-appendNewline" style="display: inline-block; width: auto; vertical-align: top;">
<label for="node-input-appendNewline" style="width: 70%;"><span data-i18n="file.label.addnewline"></span></label>
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</div>
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<div class="form-row form-row-file-write-options">
<label>&nbsp;</label>
<input type="checkbox" id="node-input-createDir" style="display: inline-block; width: auto; vertical-align: top;">
<label for="node-input-createDir" style="width: 70%;"><span data-i18n="file.label.createdir"></span></label>
</div>
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<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> <span data-i18n="common.label.name"></span></label>
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<input type="text" id="node-input-name" data-i18n="[placeholder]common.label.name">
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</div>
<div class="form-tips"><span data-i18n="file.tip"></span></div>
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</script>
<script type="text/x-red" data-help-name="file">
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<p>Writes <code>msg.payload</code> to a file, either adding to the end or replacing the existing content.
Alternatively, it can delete the file.</p>
<h3>Inputs</h3>
<dl class="message-properties">
<dt class="optional">filename <span class="property-type">string</span></dt>
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<dd>If not configured in the node, this optional property sets the name of the file to be updated.</dd>
</dl>
<h3>Details</h3>
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<p>Each message payload will be added to the end of the file, optionally appending
a newline (\n) character between each one.</p>
<p>It can be configured to overwrite the entire file rather than append. For example,
when writing binary data to a file, such as an image, this option should be used
and the option to append a newline should be disabled.</p>
<p>Alternatively, this node can be configured to delete the file.</p>
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</script>
<script type="text/x-red" data-template-name="file in">
<div class="form-row">
<label for="node-input-filename"><i class="fa fa-file"></i> <span data-i18n="file.label.filename"></span></label>
<input id="node-input-filename" type="text" data-i18n="[placeholder]file.label.filename">
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</div>
<div class="form-row">
<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>
<option value="lines" data-i18n="file.output.lines"></option>
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<option value="" data-i18n="file.output.buffer"></option>
<option value="stream" data-i18n="file.output.stream"></option>
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</select>
</div>
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> <span data-i18n="common.label.name"></span></label>
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<input type="text" id="node-input-name" data-i18n="[placeholder]common.label.name">
</div>
<div class="form-tips"><span data-i18n="file.tip"></span></div>
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</script>
<script type="text/x-red" data-help-name="file in">
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<p>Reads the contents of a file as either a string or binary buffer.</p>
<h3>Inputs</h3>
<dl class="message-properties">
<dt class="optional">filename <span class="property-type">string</span></dt>
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<dd>if not set in the node configuration, this property sets the filename to read.</dd>
</dl>
<h3>Outputs</h3>
<dl class="message-properties">
<dt>payload <span class="property-type">string | buffer</span></dt>
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<dd>The contents of the file as either a string or binary buffer.</dd>
<dt class="optional">filename <span class="property-type">string</span></dt>
<dd>If not configured in the node, this optional property sets the name of the file to be read.</dd>
</dl>
<h3>Details</h3>
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<p>The filename should be an absolute path, otherwise it will be relative to
the working directory of the Node-RED process.</p>
<p>On Windows, path separators may need to be escaped, for example: <code>\\Users\\myUser</code>.</p>
<p>Optionally, a text file can be split into lines, outputting one message per line, or a binary file
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>
<script type="text/javascript">
RED.nodes.registerType('file',{
category: 'storage-output',
defaults: {
name: {value:""},
filename: {value:""},
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appendNewline: {value:true},
createDir: {value:false},
overwriteFile: {value:"false"}
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},
color:"BurlyWood",
inputs:1,
outputs:0,
icon: "file.png",
align: "right",
label: function() {
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if (this.overwriteFile === "delete") {
return this.name||this._("file.label.deletelabel",{file:this.filename});
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} else {
return this.name||this.filename||this._("file.label.filelabel");
}
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},
labelStyle: function() {
return this.name?"node_label_italic":"";
},
oneditprepare: function() {
$("#node-input-overwriteFile").on("change",function() {
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if (this.value === "delete") { $(".form-row-file-write-options").hide(); }
else { $(".form-row-file-write-options").show(); }
});
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}
});
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RED.nodes.registerType('file in',{
category: 'storage-input',
defaults: {
name: {value:""},
filename: {value:""},
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format: {value:"utf8"},
chunk: {value:false}
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},
color:"BurlyWood",
inputs:1,
outputs:1,
outputLabels: function(i) {
return (this.format === "utf8") ? "UTF8 string" : "binary buffer";
},
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icon: "file.png",
label: function() {
return this.name||this.filename||this._("file.label.filelabel");
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},
labelStyle: function() {
return this.name?"node_label_italic":"";
},
oneditprepare: function() {
$("#node-input-format").on("change",function() {
if ($("#node-input-format").val() === "utf8") {
$("#buffer-input-type").hide();
$("#line-input-type").show();
}
else {
$("#buffer-input-type").show();
$("#line-input-type").hide();
}
});
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}
});
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</script>