53 lines
1.2 KiB
Go
53 lines
1.2 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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)
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// parser parses the log file and generates a summary report.
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type parser struct {
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summary *summary // summarizes the parsing results
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lines int // number of parsed lines (for the error messages)
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lerr error // the last error occurred
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}
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// new returns a new parsing state.
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func newParser() *parser {
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return &parser{summary: newSummary()}
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}
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// parse parses a log line and adds it to the summary.
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func (p *parser) parse(line string) {
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// if there was an error do not continue
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if p.lerr != nil {
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return
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}
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// chain the parser's error to the result's
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res, err := parseLine(line)
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if p.lines++; err != nil {
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p.lerr = fmt.Errorf("line #%d: %s", p.lines, err)
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return
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}
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p.summary.update(res)
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}
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// Summarize summarizes the parsing results.
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// Only use it after the parsing is done.
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func (p *parser) summarize() *summary {
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return p.summary
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}
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// Err returns the last error encountered
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func (p *parser) err() error {
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return p.lerr
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}
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