ref: a8234dc3c631ff8477654661683f852d61575218
dir: /format.go/
package main
import (
"strings"
"github.com/chzyer/readline"
)
func hyphenate(input string) string {
width := readline.GetScreenWidth()
return hyphenateWithWidth(input, width)
}
func hyphenateWithWidth(input string, width int) string {
var remainder = []rune(input)
var result []rune
if width < 2 {
return input
}
for len(remainder) > width {
if strings.HasPrefix(string(remainder), "\n") {
result = append(result, '\n')
remainder = remainder[1:]
continue
}
index := strings.Index(string(remainder), "\n")
// If a newline is found at or before the wrap position, break there.
if index != -1 && index <= width-1 {
result = append(result, remainder[:index]...)
remainder = remainder[index:]
continue
}
if remainder[width-1] == ' ' {
result = append(result, remainder[:width-1]...)
result = append(result, '\n')
remainder = remainder[width:] // Consume the space
} else if remainder[width-1] == '-' {
result = append(result, remainder[:width]...)
result = append(result, '\n')
remainder = remainder[width:] // Consume the hyphen
} else {
result = append(result, remainder[:width-1]...)
result = append(result, '-')
remainder = remainder[width-1:]
}
}
result = append(result, remainder...)
return string(result)
}
func countEmoji(runes []rune) int {
count := 0
for _, r := range runes {
if isEmoji(r) {
count++
}
}
return count
}
func isEmoji(r rune) bool {
return r >= 0x1F600 && r <= 0x1F64F // Emoticons
}