69 lines
1.4 KiB
Go
69 lines
1.4 KiB
Go
// Copyright © 2018 Inanc Gumus
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// Learn Go Programming Course
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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//
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// For more tutorials : https://learngoprogramming.com
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// In-person training : https://www.linkedin.com/in/inancgumus/
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// Follow me on twitter: https://twitter.com/inancgumus
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package main
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import (
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"bufio"
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"fmt"
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"os"
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"sort"
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"strings"
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)
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func main() {
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p := newParser()
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// Scan the standard-in line by line
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in := bufio.NewScanner(os.Stdin)
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for in.Scan() {
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p.lines++
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parsed, err := parse(p, in.Text())
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if err != nil {
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fmt.Println(err)
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return
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}
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domain, visits := parsed.domain, parsed.visits
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// Collect the unique domains
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if _, ok := p.sum[domain]; !ok {
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p.domains = append(p.domains, domain)
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}
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// Keep track of total and per domain visits
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p.total += visits
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// create and assign a new copy of `visit`
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p.sum[domain] = result{
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domain: domain,
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visits: visits + p.sum[domain].visits,
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}
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}
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// Print the visits per domain
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sort.Strings(p.domains)
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fmt.Printf("%-30s %10s\n", "DOMAIN", "VISITS")
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fmt.Println(strings.Repeat("-", 45))
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for _, domain := range p.domains {
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parsed := p.sum[domain]
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fmt.Printf("%-30s %10d\n", domain, parsed.visits)
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}
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// Print the total visits for all domains
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fmt.Printf("\n%-30s %10d\n", "TOTAL", p.total)
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// Let's handle the error
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if err := in.Err(); err != nil {
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fmt.Println("> Err:", err)
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}
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}
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