.

.gitignore

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+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out

README.md

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+![Example Image](northern-territory-australia-2260.jpg)
+
+## Earth Catcher 
+
+Simple CLI to download images from [Google Earth View](https://chrome.google.com/webstore/detail/earth-view-from-google-ea/bhloflhklmhfpedakmangadcdofhnnoh?hl=en).
+
+### Installation
+
+```
+$ go get github.com/s3ththompson/earth-catcher
+```
+
+### Usage
+
+```
+earth [options...] EARTH_VIEW_URL
+Options:
+	-o name of output file
+```
+
+### Example
+
+```
+$ earth https://g.co/ev/2260
+Northern Territory, Australia – Earth View from Google
+Lat: -11.992309, Lng: 131.807527, ©2014 CNES / Astrium, Cnes/Spot Image, DigitalGlobe, Landsat, Sinclair Knight Merz, Sinclair Knight Merz & Fugro
+Downloaded https://www.gstatic.com/prettyearth/assets/full/2260.jpg to northern-territory-australia-2260.jpg (1 file, 261.3 kB)
+```

earth.go

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+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"os"
+	"path"
+)
+
+type EarthViewItem struct {
+    Id string `json:"id"`
+    Slug string `json:"slug"`
+    Title string `json:"title"`
+    Lat string `json:"lat"`
+    Lng string `json:"lng"`
+    PhotoURL string `json:"photoUrl"`
+    Attribution string `json:"attribution"`
+    MapsLink string `json:"mapsLink"`
+    EarthLink string `json:"earthLink"`
+}
+
+const Usage = `Usage: earth [options...] EARTH_VIEW_URL
+Options:
+	-o name of output file
+`
+
+var (
+	o = flag.String("o", "", "")
+)
+
+func main() {
+	flag.Usage = func() {
+		fmt.Fprint(os.Stderr, Usage)
+	}
+
+	flag.Parse()
+
+	earthURL := ""
+	if flag.NArg() > 0 {
+		earthURL = flag.Args()[0]
+	}
+	output := *o
+
+	if earthURL == "" {
+		fmt.Fprintln(os.Stderr, Usage)
+		return		
+	}
+
+	resp, err := http.Get(earthURL)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error requesting url, ", earthURL)
+		return
+	}
+
+	expandedURL := resp.Request.URL.String()
+	apiURL, err := url.ParseRequestURI(expandedURL)
+	if err != nil || apiURL.Host != "earthview.withgoogle.com"  {
+		fmt.Fprintln(os.Stderr, "error resolving url, expecting host earthview.withgoogle.com")
+		return
+	}
+
+	apiURL.Path = path.Join("_api", apiURL.Path + ".json")
+	resp, err = http.Get(apiURL.String())
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error requesting api, ", apiURL.String())
+		return
+	}
+	defer resp.Body.Close()
+
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error reading api request body")
+		return
+	}
+
+	var item EarthViewItem
+	err = json.Unmarshal(body, &item)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error decoding json")
+	}
+
+	if output == "" {
+		output = item.Slug + ".jpg"
+	}
+	out, err := os.Create(output)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error writing output, ", output)
+	}
+	defer out.Close()
+
+	resp, err = http.Get(item.PhotoURL)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error downloading file, ", item.PhotoURL)
+	}
+	defer resp.Body.Close()
+
+	n, err := io.Copy(out, resp.Body)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error downloading file, ", item.PhotoURL)
+	}
+	fmt.Println(item.Title)
+	fmt.Printf("Lat: %s, Lng: %s, %s\n", item.Lat, item.Lng, item.Attribution)
+	fmt.Printf("Downloaded %s to %s (1 file, %s)\n", item.PhotoURL, output, byteCountDecimal(n))
+}
+
+// programming.guide/go/formatting-byte-size-to-human-readable-format.html
+func byteCountDecimal(b int64) string {
+	const unit = 1000
+	if b < unit {
+		return fmt.Sprintf("%d B", b)
+	}
+	div, exp := int64(unit), 0
+	for n := b / unit; n >= unit; n /= unit {
+		div *= unit
+		exp++
+	}
+	return fmt.Sprintf("%.1f %cB", float64(b)/float64(div), "kMGTPE"[exp])
+}