49 lines
1.1 KiB
Go
49 lines
1.1 KiB
Go
// For more tutorials: https://blog.learngoprogramming.com
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//
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// 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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package main
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import (
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"fmt"
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"strings"
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"github.com/inancgumus/learngo/28-methods/xxx-log-parser-methods/packaged/metrics"
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)
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// summarize prints the report and errors if any
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func summarize(rep *metrics.Report, errs ...error) {
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// TODO: make it strings.Builder
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const format = "%-30s %10s %20s\n"
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const formatValue = "%-30s %10d %20d\n"
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fmt.Printf(format, "DOMAIN", "VISITS", "TIME SPENT")
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fmt.Println(strings.Repeat("-", 65))
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next, cur := rep.Iterator()
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for next() {
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rec := cur()
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fmt.Printf(formatValue, rec.Domain, rec.Visits, rec.TimeSpent)
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}
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fmt.Printf("\n"+formatValue, "TOTAL",
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rep.Total().Visits, rep.Total().TimeSpent,
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)
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// only handle the errors once
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dumpErrs(errs...)
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}
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// this variadic func simplifies the multiple error handling
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func dumpErrs(errs ...error) {
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for _, err := range errs {
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if err != nil {
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fmt.Printf("> Err: %s\n", err)
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}
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}
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}
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