95 lines
1.9 KiB
Go
95 lines
1.9 KiB
Go
package clifmt
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import (
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"fmt"
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"regexp"
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"strings"
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)
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var titleIndex = 0
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var alignOffset = 40
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// Warn returns a red warning ASCII sign. If a string is given
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// as argument, it will print it after the warning sign
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func Warn(s ...string) string {
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if len(s) == 0 {
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return Color(31, "/!\\")
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}
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return fmt.Sprintf("%s %s", Warn(), s[0])
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}
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// Info returns a blue info ASCII sign. If a string is given
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// as argument, it will print it after the info sign
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func Info(s ...string) string {
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if len(s) == 0 {
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return Color(34, "(!)")
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}
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return fmt.Sprintf("%s %s", Info(), s[0])
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}
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// Title prints a formatted title (auto-indexed from local counted)
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func Title(s string) {
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titleIndex++
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fmt.Printf("\n%s |%d| %s %s\n", Color(33, ">>", false), titleIndex, s, Color(33, "<<", false))
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}
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// Align prints strings with space padding to align line ends (fixed width)
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// also crops the content to add '...' at the end if too long (must have a space
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// at the end)
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func Align(s string) {
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// 1. replace tabs with 4 spaces
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tabs := strings.Split(strings.Trim(s, " \t"), "\t")
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s = strings.Join(tabs, " ")
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// 2. get real size
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size := displaySize(s)
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offset := alignOffset
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if size > alignOffset-6 {
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for i, l := 0, len(s); i < l; i++ { // find when real size is right under
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next := fmt.Sprintf("%s\033[0m… ", s[0:i+1])
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if displaySize(next) >= alignOffset-5 {
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s = next
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break
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}
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}
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size = displaySize(s)
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} else {
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// fix
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offset -= 2
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}
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// 3. print string
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fmt.Printf("%s", s)
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// 4. print trailing spaces
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for i := size; i < offset; i++ {
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fmt.Printf(" ")
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}
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}
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var re = regexp.MustCompile(`(?m)\[(?:\d+;)*\d+m`)
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// displaySize returns the real size escaping special characters
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func displaySize(s string) int {
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// 1. get actual size
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size := len(s)
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// 2. get all terminal coloring matches
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matches := re.FindAllString(s, -1)
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for _, m := range matches {
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size -= len(m)
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}
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return size
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}
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