forked from mirror/enumer
48 lines
983 B
Go
48 lines
983 B
Go
package main
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import "strings"
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func longestCommonPrefix(values []Value) string {
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// LCP of min and max (lexigraphically)
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// is the LCP of the whole set.
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min := values[0].name
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max := min
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for _, s := range values[1:] {
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switch {
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case s.name < min:
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min = s.name
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case s.name > max:
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max = s.name
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}
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}
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for i := 0; i < len(min) && i < len(max); i++ {
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if min[i] != max[i] {
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return min[:i]
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}
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}
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// If all the bytes are equal but the lengths aren't then
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// min is a prefix of max, and hence the lcp
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return min
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}
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func autoPrefix(values []Value) string {
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// Can't trim a single value
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if len(values) < 2 {
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return ""
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}
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prefix := longestCommonPrefix(values)
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return prefix
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}
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func (g *Generator) trimValueNames(values []Value, prefix string) {
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for i := range values {
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values[i].name = strings.TrimPrefix(values[i].name, prefix)
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}
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}
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func (g *Generator) autoTrimValueNames(values []Value) {
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prefix := autoPrefix(values)
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g.trimValueNames(values, prefix)
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}
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