58 lines
1.2 KiB
Go
58 lines
1.2 KiB
Go
|
package reporting
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"io"
|
||
|
|
"strings"
|
||
|
|
)
|
||
|
|
|
||
|
|
type Printer struct {
|
||
|
|
out io.Writer
|
||
|
|
prefix string
|
||
|
|
}
|
||
|
|
|
||
|
|
func (self *Printer) Println(message string, values ...interface{}) {
|
||
|
|
formatted := self.format(message, values...) + newline
|
||
|
|
self.out.Write([]byte(formatted))
|
||
|
|
}
|
||
|
|
|
||
|
|
func (self *Printer) Print(message string, values ...interface{}) {
|
||
|
|
formatted := self.format(message, values...)
|
||
|
|
self.out.Write([]byte(formatted))
|
||
|
|
}
|
||
|
|
|
||
|
|
func (self *Printer) Insert(text string) {
|
||
|
|
self.out.Write([]byte(text))
|
||
|
|
}
|
||
|
|
|
||
|
|
func (self *Printer) format(message string, values ...interface{}) string {
|
||
|
|
var formatted string
|
||
|
|
if len(values) == 0 {
|
||
|
|
formatted = self.prefix + message
|
||
|
|
} else {
|
||
|
|
formatted = self.prefix + fmt.Sprintf(message, values...)
|
||
|
|
}
|
||
|
|
indented := strings.Replace(formatted, newline, newline+self.prefix, -1)
|
||
|
|
return strings.TrimRight(indented, space)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (self *Printer) Indent() {
|
||
|
|
self.prefix += pad
|
||
|
|
}
|
||
|
|
|
||
|
|
func (self *Printer) Dedent() {
|
||
|
|
if len(self.prefix) >= padLength {
|
||
|
|
self.prefix = self.prefix[:len(self.prefix)-padLength]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func NewPrinter(out io.Writer) *Printer {
|
||
|
|
self := new(Printer)
|
||
|
|
self.out = out
|
||
|
|
return self
|
||
|
|
}
|
||
|
|
|
||
|
|
const space = " "
|
||
|
|
const pad = space + space
|
||
|
|
const padLength = len(pad)
|