// backendNewColor returns a new colorful error string using the following
// format:
// pkg.func (file:line): error: text
func backendNewColor(text string, skip int) error {
pc, file, line, ok := runtime.Caller(skip)
if !ok {
return errors.New(term.RedBold("error: ") + text)
}
f := runtime.FuncForPC(pc)
if f == nil {
format := term.WhiteBold("(%s:%d): ") + term.RedBold("error: ") + "%s"
return fmt.Errorf(format, path.Base(file), line, text)
}
format := term.MagentaBold("%s") + term.WhiteBold(" (%s:%d): ") + term.RedBold("error: ") + "%s"
return fmt.Errorf(format, f.Name(), path.Base(file), line, text)
}
// grep is helper function to display the relative (target) line from a source string.
func grep(source interface{}, target string) string {
var str string
switch source.(type) {
case []byte:
str = string(source.([]byte))
case string:
str = source.(string)
default:
// working on it
}
defer func() {
backup([]byte(str))
}()
lines := strings.Split(str, "\n")
for _, line := range lines {
if strings.Contains(line, target) {
return clr.MagentaBold("Found: ") + clr.MagentaBold(line)
}
}
return ""
}
func (pos *position) String() string {
if pos == nil {
return "<no position>"
}
filePos := fmt.Sprintf("(%s:%d):", pos.file, pos.line)
if UseColor {
// Use colors.
filePosColor := term.WhiteBold(filePos)
if pos.callee == "" {
return filePosColor
}
return fmt.Sprintf("%s %s", term.MagentaBold(pos.callee), filePosColor)
}
// No colors.
if pos.callee == "" {
return filePos
}
return fmt.Sprintf("%s %s", pos.callee, filePos)
}