Go-count-test.go

package main

import (
	"bytes"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"os"
	"strings"
	"sync"
)

func main() {
	total := 0

	// Read from Stdin
	buf := new(bytes.Buffer)
	buf.ReadFrom(os.Stdin)

	// Convert to string and split urls
	s := buf.String()
	urls := strings.Split(s, "\n")

	// strip the last element off of the slice
	urls = urls[:len(urls)-1]

	var wg sync.WaitGroup
	wg.Add(len(urls))

	for _, url := range urls {
		go func(url string) {
			defer wg.Done()

			// do the get requests
			resp, err := http.Get(strings.TrimSpace(url))
			if err != nil {
				log.Fatal(err)
			}
			defer resp.Body.Close()

			// read the resp body
			body, err := ioutil.ReadAll(resp.Body)
			if err != nil {
				log.Fatal(err)
			}

			// count "Go" occurencies
			result := strings.Count(string(body), "Go")
			total += result
			fmt.Println("Count for "+url+": ", result)
		}(url)
	}
	wg.Wait()
	fmt.Println("Total: ", total)

}

//echo -e 'https://golang.org\nhttps://golang.org' | go run main.go