nix-amer/internal/clifmt/symbols.go

85 lines
1.8 KiB
Go

package clifmt
import (
"fmt"
"strings"
)
var titleIndex = 0
var alignOffset = 30
// Warn returns a red warning ASCII sign. If a string is given
// as argument, it will print it after the warning sign
func Warn(s ...string) string {
if len(s) == 0 {
return Color(31, "/!\\")
}
return fmt.Sprintf("%s %s", Warn(), s[0])
}
// Info returns a blue info ASCII sign. If a string is given
// as argument, it will print it after the info sign
func Info(s ...string) string {
if len(s) == 0 {
return Color(34, "(!)")
}
return fmt.Sprintf("%s %s", Info(), s[0])
}
// Title prints a formatted title (auto-indexed from local counted)
func Title(s string) {
titleIndex++
fmt.Printf("\n%s |%d| %s %s\n", Color(33, ">>", false), titleIndex, s, Color(33, "<<", false))
}
// Align prints strings with space padding to align line ends (fixed width)
// also crops the content to add '...' at the end if too long (must have a space
// at the end)
func Align(s string) {
// 1. replace tabs with 4 spaces
tabs := strings.Split(s, "\t")
s = strings.Join(tabs, " ")
// 1. get real size
size := getRealSize(s)
if size > alignOffset-6 {
for i, l := 0, len(s); i < l; i++ { // find when real size is right under
next := fmt.Sprintf("%s\033[0m… ", s[0:i+1])
if getRealSize(next) >= alignOffset-5 {
s = next
break
}
}
size = getRealSize(s) - 1
}
// 2. print string
fmt.Printf("%s", s)
// 3. print trailing spaces
for i := size; i < alignOffset; i++ {
fmt.Printf(" ")
}
}
// getRealSize returns the real size escaping special characters
func getRealSize(s string) int {
// 1. get actual size
size := len(s)
// 2. remove \033[XYm format characters
size -= 7 * len(strings.Split(s, "\033"))
// 3. compensate 1 char for \033[0m
size += len(strings.Split(s, "\033[0m"))
return size
}