go.temporal.io/server/common/util/strings.go

19 LOC · 10 covered · 9 uncovered · 7 ranges · 18 concepts · 5 introducers · 13 tests

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  package util
  
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  import "unicode/utf8"
  
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  // TruncateUTF8 truncates s to no more than n _bytes_, and returns a valid utf-8 string as long
  
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  // as the input is a valid utf-8 string.
  
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  // Note that truncation pays attention to codepoints only! This may truncate in the middle of a
  
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  // grapheme cluster.
  
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  >
  func TruncateUTF8(s string, n int) string {
  
strings.go ×2

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  	if len(s) <= n {
  
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  		return s
  
strings.go ×1

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  	} else if n <= 0 {
  
strings.go ×2

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  		return ""
  
strings.go ×1

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  	}
  
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  	for n > 0 && !utf8.RuneStart(s[n]) {
  
strings.go ×2

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  		n--
  
strings.go ×1

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  	}
  
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  	return s[:n]
  
strings.go ×2

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  }