List Famobi games

main.go

// Command famobi_games creates a useful JSON file listing
// all Famobi games and their corresponding tags.
//
// With the resulting JSON, you can easily find all the
// games with a given tag using `jq`:
//
//     jq '.[] | select(.categories | contains(["Match 3"]))'
//
package main

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"net/http"
	"regexp"
)

func main() {
	categoryExpr := regexp.MustCompile("</i>&nbsp;(.*)</a>")
	nameExpr := regexp.MustCompile("<h1 itemprop=\"name\">(.*)</h1>")
	fmt.Println("[")
	for i, url := range gameURLs() {
		if i > 0 {
			fmt.Println(",")
		}
		page := fetch(url)
		var categories []string
		for _, m := range categoryExpr.FindAllStringSubmatch(page, -1) {
			categories = append(categories, m[1])
		}
		name := nameExpr.FindStringSubmatch(page)[1]
		obj := map[string]interface{}{
			"categories": categories,
			"name":       name,
			"url":        url,
		}
		rawData, _ := json.MarshalIndent(obj, "  ", "  ")
		fmt.Print("  " + string(rawData))
	}
	fmt.Println()
	fmt.Println("]")
}

func gameURLs() []string {
	page := fetch("http://html5games.com/All-Games")
	expr := regexp.MustCompile("href=\"(/Game/.*)\"")
	matches := expr.FindAllStringSubmatch(page, -1)
	var res []string
	for _, match := range matches {
		res = append(res, "http://html5games.com"+match[1])
	}
	return res
}

func fetch(url string) string {
	resp, err := http.Get(url)
	if err != nil {
		panic(err)
	}
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}
	return string(body)
}