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convert.go
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convert.go
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package main
import (
"io/ioutil"
"regexp"
"strings"
"unicode"
"github.com/mingrammer/casec"
)
func isCaseSeparator(r rune) bool {
return r == casec.SnakeDelimiter || r == casec.KebabDelimiter
}
func convertWord(word, src, tgt string) string {
if src != "" {
if is, _ := casec.IsCaseOf(src, word); is {
word, _ = casec.ToCaseFor(tgt, word)
}
}
return word
}
func convertText(text, src, tgt string, start, end int, ignoreRe *regexp.Regexp) string {
var convLines []string
lines := strings.Split(text, "\n")
if start <= 0 {
start = 1
}
if end <= 0 {
end = len(lines)
}
for i, line := range lines {
if i >= start-1 && i <= end-1 {
conv := strings.Builder{}
chunk := strings.Builder{}
size := len(line)
lastLetter := false
for j, r := range line {
if unicode.IsLetter(r) || isCaseSeparator(r) {
chunk.WriteRune(r)
if j < size-1 {
continue
}
lastLetter = true
}
if chunk.Len() > 0 {
word := chunk.String()
if !ignoreRe.MatchString(word) {
word = convertWord(word, src, tgt)
}
conv.WriteString(word)
if lastLetter {
break
}
chunk.Reset()
}
conv.WriteRune(r)
}
line = conv.String()
}
convLines = append(convLines, line)
}
out := strings.Join(convLines, "\n")
return out
}
func convertFromText(text, src, tgt string, start, end int, ignoreRe *regexp.Regexp) (string, string) {
conv := convertText(text, src, tgt, start, end, ignoreRe)
return text, conv
}
func convertFromFile(fileName, src, tgt string, start, end int, ignoreRe *regexp.Regexp) (string, string, error) {
b, err := ioutil.ReadFile(fileName)
if err != nil {
return "", "", err
}
text, conv := convertFromText(string(b), src, tgt, start, end, ignoreRe)
return text, conv, nil
}