mirror of https://github.com/prometheus/prometheus
28 lines
580 B
Go
28 lines
580 B
Go
|
package vfsgen
|
||
|
|
|
||
|
|
import (
|
||
|
|
"io"
|
||
|
|
)
|
||
|
|
|
||
|
|
// stringWriter writes given bytes to underlying io.Writer as a Go interpreted string literal value,
|
||
|
|
// not including double quotes. It tracks the total number of bytes written.
|
||
|
|
type stringWriter struct {
|
||
|
|
io.Writer
|
||
|
|
N int64 // Total bytes written.
|
||
|
|
}
|
||
|
|
|
||
|
|
func (sw *stringWriter) Write(p []byte) (n int, err error) {
|
||
|
|
const hex = "0123456789abcdef"
|
||
|
|
buf := []byte{'\\', 'x', 0, 0}
|
||
|
|
for _, b := range p {
|
||
|
|
buf[2], buf[3] = hex[b/16], hex[b%16]
|
||
|
|
_, err = sw.Writer.Write(buf)
|
||
|
|
if err != nil {
|
||
|
|
return n, err
|
||
|
|
}
|
||
|
|
n++
|
||
|
|
sw.N++
|
||
|
|
}
|
||
|
|
return n, nil
|
||
|
|
}
|