Golang : Convert spaces to tabs and back to spaces example
A simple example on how to convert spaces to tabs and convert back the tabs to spaces again in a given text string. Useful in a situation where you want to pre-parse a raw data file first before feeding to another parser for further processing.
Here you go!
package main
import (
"fmt"
"strings"
"unicode"
)
func TabToSpace(input string) string {
var result []string
for _, i := range input {
switch {
// all these considered as space, including tab \t
// '\t', '\n', '\v', '\f', '\r',' ', 0x85, 0xA0
case unicode.IsSpace(i):
result = append(result, " ") // replace tab with space
case !unicode.IsSpace(i):
result = append(result, string(i))
}
}
return strings.Join(result, "")
}
func spaceToTab(input string) string {
var result []string
for _, i := range input {
switch {
case unicode.IsSpace(i):
result = append(result, "\t")
case !unicode.IsSpace(i):
result = append(result, string(i))
}
}
return strings.Join(result, "")
}
func main() {
// text := "This is a line with a lot of spaces in between"
text := "жѳМѭњЂЯёЧВ 一二三 handle alphabets = ขอพฮศโำฐเฦ abc世界你好123 ペツワケザユプルヂザ"
fmt.Println("Before: ", text)
output := spaceToTab(text)
fmt.Println("After: ", output)
fmt.Println("Back:", TabToSpace(output))
}
Output:
Before: жѳМѭњЂЯёЧВ 一二三 handle alphabets = ขอพฮศโำฐเฦ abc世界你好123 ペツワケザユプルヂザ
After: жѳМѭњЂЯёЧВ 一二三 handle alphabets = ขอพฮศโำฐเฦ abc世界你好123 ペツワケザユプルヂザ
Back: жѳМѭњЂЯёЧВ 一二三 handle alphabets = ขอพฮศโำฐเฦ abc世界你好123 ペツワケザユプルヂザ
References:
https://golang.org/src/unicode/graphic.go?s=3997:4022#L116
https://www.socketloop.com/tutorials/golang-read-tab-delimited-file-with-encoding-csv-package
See also : Golang : Read tab delimited file with encoding/csv package
By Adam Ng
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