Hilbish/readline/term.go

52 lines
983 B
Go
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package readline
import (
"fmt"
"os"
"regexp"
"unicode/utf8"
"github.com/olekukonko/ts"
)
// GetTermWidth returns the width of Stdout or 80 if the width cannot be established
func GetTermWidth() (termWidth int) {
var err error
fd := int(os.Stdout.Fd())
termWidth, _, err = GetSize(fd)
if err != nil {
termWidth = 80 // The defacto standard on older terms
}
return
}
// GetTermLength returns the length of the terminal
// (Y length), or 80 if it cannot be established
func GetTermLength() (termLength int) {
size, err := ts.GetSize()
if err != nil || size.Row() == 0 {
return 80
}
termLength = size.Row()
return
}
func printf(format string, a ...interface{}) {
s := fmt.Sprintf(format, a...)
print(s)
}
func print(s string) {
os.Stdout.WriteString(s)
}
var rxAnsiSgr = regexp.MustCompile("\x1b\\[[:;0-9]+m")
// Gets the number of runes in a string
func strLen(s string) int {
s = rxAnsiSgr.ReplaceAllString(s, "")
return utf8.RuneCountInString(s)
}