56 lines
989 B
Go
56 lines
989 B
Go
// For more tutorials: https://bj.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 parse
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import (
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"encoding/json"
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"io"
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)
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// JSONParser parses json records.
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type JSONParser struct {
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in *json.Decoder
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err error // last error
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last *Record // last parsed record
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}
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// JSON creates a json parser.
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func JSON(r io.Reader) *JSONParser {
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return &JSONParser{
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in: json.NewDecoder(r),
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last: new(Record),
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}
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}
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// Parse the next line.
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func (p *JSONParser) Parse() bool {
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if p.err != nil {
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return false
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}
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p.last.Reset()
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err := p.in.Decode(&p.last)
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if err == io.EOF {
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return false
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}
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p.err = err
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return err == nil
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}
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// Value returns the most recent record parsed by a call to Parse.
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func (p *JSONParser) Value() Record {
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return *p.last
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}
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// Err returns the first error that was encountered by the Log.
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func (p *JSONParser) Err() error {
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return p.err
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}
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