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Avoid expensive fmt.Fprintf calls in StringWriter.Write inner loop.

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This addresses issue 14.
This commit is contained in:
Jim Teeuwen 2014-01-29 11:34:37 +01:00
parent ae22b84b7e
commit e87a807885
1 changed files with 9 additions and 3 deletions
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12
stringwriter.go
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@ -5,10 +5,11 @@
package bindata
import (
"fmt"
"io"
)
const lowerHex = "0123456789abcdef"
type StringWriter struct {
io.Writer
c int
@ -19,8 +20,13 @@ func (w *StringWriter) Write(p []byte) (n int, err error) {
return
}
for n = range p {
fmt.Fprintf(w.Writer, "\\x%02x", p[n])
buf := []byte(`\x00`)
var b byte
for n, b = range p {
buf[2] = lowerHex[b/16]
buf[3] = lowerHex[b%16]
w.Writer.Write(buf)
w.c++
}