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