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c28f7cb29f
Initial part of #435
59 lines
1.3 KiB
Go
59 lines
1.3 KiB
Go
package misspell
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import (
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"strings"
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)
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// WordCase is an enum of various word casing styles
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type WordCase int
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// Various WordCase types.. likely to be not correct
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const (
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CaseUnknown WordCase = iota
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CaseLower
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CaseUpper
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CaseTitle
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)
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// CaseStyle returns what case style a word is in
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func CaseStyle(word string) WordCase {
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upperCount := 0
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lowerCount := 0
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// this iterates over RUNES not BYTES
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for i := 0; i < len(word); i++ {
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ch := word[i]
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switch {
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case ch >= 'a' && ch <= 'z':
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lowerCount++
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case ch >= 'A' && ch <= 'Z':
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upperCount++
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}
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}
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switch {
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case upperCount != 0 && lowerCount == 0:
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return CaseUpper
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case upperCount == 0 && lowerCount != 0:
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return CaseLower
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case upperCount == 1 && lowerCount > 0 && word[0] >= 'A' && word[0] <= 'Z':
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return CaseTitle
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}
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return CaseUnknown
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}
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// CaseVariations returns
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// If AllUpper or First-Letter-Only is upcased: add the all upper case version
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// If AllLower, add the original, the title and upcase forms
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// If Mixed, return the original, and the all upcase form
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//
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func CaseVariations(word string, style WordCase) []string {
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switch style {
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case CaseLower:
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return []string{word, strings.ToUpper(word[0:1]) + word[1:], strings.ToUpper(word)}
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case CaseUpper:
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return []string{strings.ToUpper(word)}
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default:
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return []string{word, strings.ToUpper(word)}
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}
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}
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