70 lines
1.1 KiB
Go
70 lines
1.1 KiB
Go
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// For more tutorials: https://bp.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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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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)
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type jsonParser struct {
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r io.Reader
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update func(r result)
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}
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func newJSONParser(r io.Reader) *jsonParser {
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return &jsonParser{
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r: r,
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update: func(result) {},
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}
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}
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func (p *jsonParser) parse() error {
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defer readClose(p.r)
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bytes, err := ioutil.ReadAll(p.r)
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if err != nil {
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return err
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}
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return p.parseJSON(bytes)
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}
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func (p *jsonParser) parseJSON(bytes []byte) error {
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var rs []struct {
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Domain string
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Page string
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Visits int
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Uniques int
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}
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if err := json.Unmarshal(bytes, &rs); err != nil {
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if serr, ok := err.(*json.SyntaxError); ok {
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return fmt.Errorf("%v %q", serr, bytes[:serr.Offset])
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}
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return err
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}
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for _, r := range rs {
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p.update(result{
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domain: r.Domain,
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page: r.Page,
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visits: r.Visits,
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uniques: r.Uniques,
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})
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}
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return nil
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}
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func (p *jsonParser) notify(f func(r result)) {
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p.update = f
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}
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