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Diff for: ‎README.md

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# kmlExtractor
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KML data extractor written in Go
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## How to use
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```golang
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package main
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```
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## References
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[KML Reference](http://dh.obdurodon.org/kml/kml-tutorial.xhtml)

Diff for: ‎kmlextractor.go

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/*
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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*/
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package kmlextractor
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import (
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"archive/zip"
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"bufio"
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"encoding/xml"
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"github.com/kevinborras/kmlextractor/model"
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"os"
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"strings"
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)
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//checkType checks if it is possible to unzip the .kml and obtain more information
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func checkZipped(document *os.File) (bool, error) {
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var err error
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b1 := make([]byte, 2)
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_, err = document.Read(b1)
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if err != nil {
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return false, err
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}
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if string(b1) == "PK" {
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return true, err
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}
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return false, err
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}
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//GetContent func returns all the information insede the .kml file
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func GetContent(document *os.File) (kmlInfo model.KML, err error) {
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flag, err := checkZipped(document)
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if err != nil {
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return kmlInfo, err
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}
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if flag {
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document.Close()
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//check for files
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oriName := document.Name()
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dot := strings.LastIndex(oriName, ".")
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zipName := oriName[:dot] + ".zip"
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err := os.Rename(oriName, zipName)
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if err != nil {
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return kmlInfo, err
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}
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read, err := zip.OpenReader(zipName)
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if err != nil {
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os.Rename(zipName, oriName)
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return kmlInfo, err
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}
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xmlFile := ""
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for _, file := range read.File {
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if file.Name == "doc.kml" {
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rc, err := file.Open()
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if err != nil {
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return kmlInfo, err
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}
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scanner := bufio.NewScanner(rc)
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for scanner.Scan() {
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xmlFile += scanner.Text()
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}
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}
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}
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if err := xml.Unmarshal([]byte(xmlFile), &kmlInfo); err != nil {
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os.Rename(zipName, oriName)
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return kmlInfo, err
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}
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read.Close()
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os.Rename(zipName, oriName)
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} else {
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fStats, err := document.Stat()
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if err != nil {
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return kmlInfo, err
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}
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//Byte slice of document size
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docBytes := make([]byte, fStats.Size())
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_, err = document.Read(docBytes)
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if err := xml.Unmarshal(docBytes, &kmlInfo); err != nil {
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return kmlInfo, err
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}
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document.Close()
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}
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return kmlInfo, err
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}

Diff for: ‎model/kmlstruct.go

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/*
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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*/
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package model
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//KML struct
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type KML struct {
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Doc Document `xml:"Document"`
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Placemarks []PlaceMark `xml:"Placemark"`
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F Folder `xml:"Folder"`
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NetLink NetworkLink `xml:"NetworkLink"`
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}
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//Document struct
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type Document struct {
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Name string `xml:"name"`
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StyleM StyleMap `xml:"StyleMap"`
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Style []Style `xml:"Style"`
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F []Folder `xml:"Folder"`
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Lookat LookAt `xml:"LookAt"`
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NetLink NetworkLink `xml:"NetworkLink"`
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}
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//NetworkLink struct
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type NetworkLink struct {
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Name string `xml:"name"`
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Visibility int `xml:"visibility"`
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Open int `xml:"open"`
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Lookat LookAt `xml:"LookAt"`
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FlyToView string `xml:"flyToView"`
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URLInfo URL `xml:"Url"`
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}
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//LookAt struct
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type LookAt struct {
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Longitude string `xml:"longitude"`
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Latitude string `xml:"latitude"`
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Altitude string `xml:"altitude"`
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Range string `xml:"range"`
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Tilt string `xml:"tilt"`
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Heading string `xml:"heading"`
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AltitudeMode string `xml:"altitudeMode"`
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}
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//URL struct
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type URL struct {
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Href string `xml:"href"`
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RefreshInterval string `xml:"refreshInterval"`
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ViewRefreshMode string `xml:"viewRefreshMode"`
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ViewRefreshTime string `xml:"viewRefreshTime"`
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ViewBoundScale string `xml:"viewBoundScale"`
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}
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//StyleMap struct
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type StyleMap struct {
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Pairs []Pair `xml:"Pair"`
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}
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//Pair struct
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type Pair struct {
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Key string `xml:"key"`
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StyleURL string `xml:"styleUrl"`
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}
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//Style struct
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type Style struct {
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IconS IconStyle `xml:"IconStyle"`
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LineS LineStyle `xml:"LineStyle"`
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ListS ListStyle `xml:"ListStyle"`
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}
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//IconStyle struct customizes the pinpoints
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type IconStyle struct {
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Scale string `xml:"scale"`
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Ico Icon `xml:"Icon"`
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HS HotSpot `xml:"hotSpot"`
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}
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//Icon struct contains the link to the icon
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type Icon struct {
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Href string `xml:"href"`
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}
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//HotSpot struct
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type HotSpot struct {
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X string `xml:"x,attr"`
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Y string `xml:"y,attr"`
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Xunits string `xml:"xunits,attr"`
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Yunits string `xml:"yunits,attr"`
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}
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//LineStyle struct styles the strokes that join two or more geographical points
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type LineStyle struct {
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Color string `xml:"color"`
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Width string `xml:"width"`
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}
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//ListStyle struct
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type ListStyle struct {
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ListItemType string `xml:"listItemType"`
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ItemIco ItemIcon `xml:"ItemIcon"`
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BgColor string `xml:"bgColor"`
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MaxSnippetLines string `xml:"maxSnippetLines"`
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}
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//ItemIcon struct
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type ItemIcon struct {
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State string `xml:"state"`
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Href string `xml:"href"`
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}
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//Folder struct
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type Folder struct {
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Name string `xml:"name"`
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Visibility string `xml:"description"`
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Open int `xml:"open"`
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F []Folder `xml:"Folder"`
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Lookat LookAt `xml:"LookAt"`
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Placemarks []PlaceMark `xml:"Placemark"`
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PhotoOverlayList []PhotoOverlay `xml:"PhotoOverlay"`
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}
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//PlaceMark struct pinpoints a location through reference to the Earth’s surface
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type PlaceMark struct {
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Name string `xml:"name"`
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Description string `xml:"description"`
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P Point `xml:"Point"`
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StyleURL string `xml:"styleUrl"`
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LineS LineString `xml:"LineString"`
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}
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//LineString struct identifies at least two points to connect
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type LineString struct {
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Tssellate string `xml:"tessellate"`
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AltitudeMode string `xml:"altitudeMode"`
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Coordinates string `xml:"coordinates"`
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}
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//PhotoOverlay struct
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type PhotoOverlay struct {
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Name string `xml:"name"`
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Cam Camera `xml:"Camera"`
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Style Style `xml:"Style"`
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Ico Icon `xml:"Icon"`
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Rotation string `xml:"rotation"`
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VVolume ViewVolume `xml:"ViewVolume"`
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P Point `xml:"Point"`
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}
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//Camera struct
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type Camera struct {
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Longitude string `xml:"longitude"`
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Latitude string `xml:"latitude"`
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Altitude string `xml:"altitude"`
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Heading string `xml:"heading"`
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Tilt string `xml:"tilt"`
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Rll string `xml:"roll"`
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AltitudeMode string `xml:"altitudeMode"`
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}
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//ViewVolume struct
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type ViewVolume struct {
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LeftFov string `xml:"leftFov"`
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RightFov string `xml:"rightFov"`
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BottomFov string `xml:"bottomFov"`
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TopFov string `xml:"topFov"`
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Near string `xml:"near"`
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}
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//Point struct contains geographical information
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type Point struct {
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AltitudeMode string `xml:"altitudeMode"`
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Coordinates string `xml:"coordinates"`
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}

Diff for: ‎samples/doc.kml

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<?xml version="1.0" encoding="UTF-8"?>
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<kml xmlns="http://earth.google.com/kml/2.1">
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<NetworkLink>
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<name>Real-time Earthquakes</name>
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<open>1</open>
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<LookAt>
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<longitude>-104.1025</longitude>
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<latitude>50.4913</latitude>
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<altitude>0</altitude>
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<range>8384245</range>
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<tilt>0</tilt>
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<heading>-0.2564</heading>
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</LookAt>
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<flyToView>1</flyToView>
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<Url>
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<href>http://services.google.com/earth/kmz/realtime_earthquakes.kmz</href>
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</Url>
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</NetworkLink>
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</kml>

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