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35 lines
883 B
Go
35 lines
883 B
Go
package markup
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import (
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"unicode"
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)
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// MatchesHorizontalLine checks if the string can be interpreted as suitable for rendering as <hr/>.
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//
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// The rule is: if there are more than 4 characters "-" in the string, then make it a horizontal line.
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// Otherwise it is a paragraph (<p>).
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func MatchesHorizontalLine(line string) bool {
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counter := 0
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// Check initially that the symbol is "-". If it is not a "-", it is most likely a space or another character.
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// With unicode.IsLetter() we can separate spaces and characters.
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for _, ch := range line {
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if ch == '-' {
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counter++
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continue
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}
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// If we bump into any other character (letter) in the line, it is immediately an incorrect horizontal line.
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// There is no point in counting further, we end the loop.
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if unicode.IsLetter(ch) {
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counter = 0
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break
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}
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}
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if counter >= 4 {
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return true
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}
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return false
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}
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