Convert `Podfile.lock` dependency list into a `.dot` file than can be opened in OmniGraffle

main.go

package main

import "os"
import "bufio"
import "io/ioutil"
import "regexp"
import "strings"


// Copy Podfile.lock contents into input.txt in same dir as script
// Output is in output.dot

func main() {
	file, err := os.Open("input.txt")
	if err != nil {
		panic(err)
	}
	defer file.Close()

	scanner := bufio.NewScanner(file)
	var currentPod = ""
	var currentDependency = ""
	var output = "digraph G {\n\tnode [shape=box];\n"
	for scanner.Scan() {
		line := scanner.Text()
		if !strings.Contains(line, "PODS") && !strings.Contains(line, " ") {
			break
		}

		if strings.HasPrefix(line, "    -") {
			currentDependency = quote(stripToName(line))
		}

		if currentPod != "" {
			var connection string
			if currentDependency != "" {
				connection = currentPod + " -> " + currentDependency
			} else {
				connection = currentPod + " -> {}"
			}
			output = "\t" + output + connection + ";\n"
			currentDependency = ""
		}

		if strings.HasPrefix(line, "  -") {
			currentPod = quote(stripToName(line))
			currentDependency = ""
		}
	}
	output = output + "}\n"
	ioutil.WriteFile("output.dot", []byte(output), 0644)
}

func quote(s string) string {
	return "\"" + s + "\""
}

func stripToName(s string) string {
	r := regexp.MustCompile("- ([^ ]+)")
	return r.FindStringSubmatch(s)[1]
}