109 lines
1.3 KiB
Go
109 lines
1.3 KiB
Go
// Copyright 2015 The Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package markdown
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func isHeaderLine(s string) bool {
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if s == "" {
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return false
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}
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st := 0
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n := 0
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for i := 0; i < len(s); i++ {
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b := s[i]
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switch st {
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case 0: // initial state
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switch b {
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case '|':
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st = 1
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case ':':
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st = 2
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case '-':
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st = 3
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n++
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case ' ':
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break
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default:
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return false
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}
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case 1: // |
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switch b {
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case ' ':
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break
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case ':':
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st = 2
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case '-':
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st = 3
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n++
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default:
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return false
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}
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case 2: // |:
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switch b {
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case ' ':
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break
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case '-':
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st = 3
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n++
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default:
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return false
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}
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case 3: // |:-
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switch b {
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case '-':
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break
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case ':':
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st = 4
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case '|':
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st = 5
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case ' ':
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st = 6
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default:
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return false
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}
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case 4: // |:---:
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switch b {
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case ' ':
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break
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case '|':
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st = 5
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default:
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return false
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}
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case 5: // |:---:|
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switch b {
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case ' ':
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break
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case ':':
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st = 2
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case '-':
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st = 3
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n++
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default:
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return false
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}
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case 6: // |:--- SPACE
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switch b {
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case ' ':
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break
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case ':':
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st = 4
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case '|':
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st = 5
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default:
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return false
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}
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}
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}
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return n >= 1
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}
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