Created
April 18, 2010 11:58
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// Mozilla export coordinates to a .kml file (for Google Earth) | |
var $google = { | |
_exampleLocation : { | |
'name':'Tokyo', | |
'latitude':35.65444, | |
'longitude':139.74472 | |
// Other data: | |
//'heading' : 0 , | |
//'tilt' : 0 , | |
//'range': 1000000 | |
}, | |
_CC : Components.classes, | |
_CI : Components.interfaces, | |
_getDOMImpl : function(){ | |
if (this._domImpl == null){ | |
this._domImpl = this._CC["@mozilla.org/xmlextras/domparser;1"].createInstance(this._CI.nsIDOMParser).parseFromString("<foo/>", "text/xml").implementation; | |
} | |
return this._domImpl; | |
}, | |
_stringToTmpFile: function(dataString, charset, tmpFileName) { | |
var unicodeConverter = this._CC["@mozilla.org/intl/scriptableunicodeconverter"].createInstance(this._CI.nsIScriptableUnicodeConverter); | |
unicodeConverter.charset = charset; | |
var convertedString = unicodeConverter.ConvertFromUnicode(dataString); | |
var tmpFile = this._CC["@mozilla.org/file/directory_service;1"].getService(this._CI.nsIProperties).get("TmpD", this._CI.nsILocalFile); | |
tmpFile.append(tmpFileName); | |
tmpFile.createUnique(this._CI.nsIFile.NORMAL_FILE_TYPE, 0664); | |
var outStream = this._CC["@mozilla.org/network/file-output-stream;1"].createInstance(this._CI.nsIFileOutputStream); | |
outStream.init(tmpFile, 0x02 | 0x08 | 0x20, 0664, 0); | |
outStream.write(convertedString, convertedString.length); | |
var finalData = unicodeConverter.Finish(); | |
if (finalData.length > 0) { | |
outStream.write(finalData, finalData.length); | |
} | |
outStream.close(); | |
return tmpFile ; | |
}, | |
openKMLFile : function(location,fileName) { | |
if (!location || location == '') { location = this._exampleLocation ; } | |
var doc = this._getDOMImpl().createDocument("http://earth.google.com/kml/2.0", "kml", null); | |
var kmlDocument = doc.createElement("Document"); | |
doc.documentElement.appendChild(kmlDocument); | |
var kmlPlacemark = doc.createElement("Placemark") | |
kmlDocument.appendChild(kmlPlacemark); | |
var kmlName = doc.createElement("name"); | |
kmlPlacemark.appendChild(kmlName); | |
var kmlPoint = doc.createElement("Point"); | |
kmlPlacemark.appendChild(kmlPoint); | |
var kmlAltitudeMode = doc.createElement("altitudeMode"); | |
kmlPoint.appendChild(kmlAltitudeMode); | |
var kmlCoordinates = doc.createElement("coordinates"); | |
kmlPoint.appendChild(kmlCoordinates); | |
var kmlLookAt = doc.createElement("LookAt"); | |
kmlPlacemark.appendChild(kmlLookAt); | |
var kmlHeading = doc.createElement("heading"); | |
kmlLookAt.appendChild(kmlHeading); | |
var kmlTilt = doc.createElement("tilt"); | |
kmlLookAt.appendChild(kmlTilt); | |
var kmlRange = doc.createElement("range"); | |
kmlLookAt.appendChild(kmlRange); | |
var kmlLatitude = doc.createElement("latitude"); | |
kmlLookAt.appendChild(kmlLatitude); | |
var kmlLongitude = doc.createElement("longitude"); | |
kmlLookAt.appendChild(kmlLongitude); | |
kmlName.appendChild(doc.createTextNode(location.name)); | |
kmlAltitudeMode.appendChild(doc.createTextNode("relativeToGround")); | |
kmlCoordinates.appendChild(doc.createTextNode(location.longitude + "," + location.latitude + ",0")); | |
kmlHeading.appendChild(doc.createTextNode(location.heading ? location.heading : '0')); | |
kmlTilt.appendChild(doc.createTextNode(location.tilt ? location.tilt : '0')); | |
kmlRange.appendChild(doc.createTextNode(location.range ? location.range : '1000000')); | |
kmlLatitude.appendChild(doc.createTextNode(location.latitude)); | |
kmlLongitude.appendChild(doc.createTextNode(location.longitude)); | |
var serializer = this._CC["@mozilla.org/xmlextras/xmlserializer;1"].createInstance(this._CI.nsIDOMSerializer); | |
var kmlString = '<?xml version="1.0" encoding="UTF-8"?>' + serializer.serializeToString(doc); | |
var kmlFile = this._stringToTmpFile(kmlString, "UTF-8", fileName); | |
kmlFile.launch(); | |
} | |
} | |
Usage: | |
// define a location hash: | |
var location = { | |
'name':'Tokyo', | |
'latitude':35.65444, | |
'longitude':139.74472 | |
// Other data: | |
//'heading' : 0 , | |
//'tilt' : 0 , | |
//'range': 1000000 | |
} | |
// choose a name for your .kml file: | |
var myFileName = 'my_geo.kml'; | |
// now use them to force opening a .kml file: | |
$google.openKMLFile(location,myFileName); | |
Will output: | |
<?xml version="1.0" encoding="UTF-8" ?> | |
<kml xmlns="http://earth.google.com/kml/2.0"> | |
<Document> | |
<Placemark> | |
<name>Tokyo</name> | |
<Point> | |
<altitudeMode>relativeToGround</altitudeMode> | |
<coordinates>139.74472,35.65444,0</coordinates> | |
</Point> | |
<LookAt> | |
<heading>0</heading> | |
<tilt>0</tilt> | |
<range>1000000</range> | |
<latitude>35.65444</latitude> | |
<longitude>139.74472</longitude> | |
</LookAt> | |
</Placemark> | |
</Document> | |
</kml> |
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