109 lines
2.1 KiB
Go
109 lines
2.1 KiB
Go
package txt
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import (
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"fmt"
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"strings"
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)
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// UniqueNames removes exact duplicates from a list of strings without changing their order.
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func UniqueNames(names []string) (result []string) {
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if len(names) < 1 {
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return []string{}
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}
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k := make(map[string]bool)
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for _, n := range names {
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if _, value := k[n]; !value {
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k[n] = true
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result = append(result, n)
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}
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}
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return result
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}
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// AppendName appends a name to an existing name.
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func AppendName(s, n string) string {
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s = strings.TrimSpace(s)
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n = strings.TrimSpace(n)
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if s == "" {
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return n
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} else if s == n {
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return s
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}
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return fmt.Sprintf("%s %s", s, n)
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}
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// JoinNames joins a list of names to be used in titles and descriptions.
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func JoinNames(names []string, shorten bool) (result string) {
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l := len(names)
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if l == 0 {
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return ""
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} else if l == 1 {
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return names[0]
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}
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var familyName string
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// Common family name?
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if i := strings.LastIndex(names[0], " "); i > 1 && len(names[0][i:]) > 2 {
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familyName = names[0][i:]
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for i := 1; i < l; i++ {
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if !strings.HasSuffix(names[i], familyName) {
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familyName = ""
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break
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}
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}
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}
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// Shorten names?
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if shorten {
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shortNames := make([]string, l)
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for i := 0; i < l; i++ {
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shortNames[i] = strings.SplitN(names[i], Space, 2)[0]
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if i > 0 && shortNames[i] == strings.SplitN(names[i-1], Space, 2)[0] {
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shortNames[i] = names[i]
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shortNames[i-1] = names[i-1]
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}
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}
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names = shortNames
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}
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if l == 2 {
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result = strings.Join(names, " & ")
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} else {
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result = fmt.Sprintf("%s & %s", strings.Join(names[:l-1], ", "), names[l-1])
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}
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// Keep family name at the end.
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if familyName != "" {
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if shorten {
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result = result + familyName
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} else {
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result = strings.Replace(result, familyName, "", l-1)
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}
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}
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return result
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}
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// NameKeywords returns a list of unique, lowercase keywords based on a person's names and aliases.
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func NameKeywords(names, aliases string) (results []string) {
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if names == "" && aliases == "" {
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return []string{}
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}
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names = strings.ToLower(names)
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aliases = strings.ToLower(aliases)
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return UniqueNames(append(Words(names), Words(aliases)...))
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}
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