photoprism/pkg/txt/clip.go

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package txt
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import (
"strings"
)
const (
Ellipsis = "…"
ClipRole = 32
ClipKeyword = 40
ClipIP = 48
ClipUserName = 64
ClipSlug = 80
ClipCategory = 100
ClipTokenName = 128
ClipDefault = 160
ClipName = 160
ClipLongName = 200
ClipEmail = 255
ClipPath = 500
ClipURL = 512
ClipLog = 512
ClipFlags = 767
ClipShortText = 1024
ClipText = 2048
ClipLongText = 4096
ClipPassword = 4096
)
// Clip shortens a string to the given number of runes, and removes all leading and trailing white space.
func Clip(s string, size int) string {
s = strings.TrimSpace(s)
if s == "" || size <= 0 {
return ""
}
runes := []rune(s)
if len(runes) > size {
s = string(runes[0:size])
}
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return strings.TrimSpace(s)
}
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// Shorten shortens a string with suffix.
func Shorten(s string, size int, suffix string) string {
if suffix == "" {
suffix = Ellipsis
}
l := len(suffix)
if len(s) < size || size < l+1 {
return s
}
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return Clip(s, size-l) + suffix
}