From 4e4fda78a2126ac78c6c0fb88040e687bfc7950e Mon Sep 17 00:00:00 2001
From: Shulhan <ms@kilabit.info>
Date: Thu, 21 Feb 2019 08:35:02 +0700
Subject: memfs: add method to dump files as Go generated source

If you familiar with go-bindata [1], this method is similar with that.

[1] github.com/shuLhan/go-bindata
---
 lib/bytes/bytes.go | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

(limited to 'lib/bytes/bytes.go')

diff --git a/lib/bytes/bytes.go b/lib/bytes/bytes.go
index 63a502ab..83cd99c9 100644
--- a/lib/bytes/bytes.go
+++ b/lib/bytes/bytes.go
@@ -328,6 +328,34 @@ func ReadUint32(data []byte, x uint) uint32 {
 	return uint32(data[x])<<24 | uint32(data[x+1])<<16 | uint32(data[x+2])<<8 | uint32(data[x+3])
 }
 
+//
+// InReplace do a reverse replace on input, any characters that is not on
+// allowed, will be replaced with character c.
+//
+func InReplace(in, allowed []byte, c byte) (out []byte) {
+	if len(in) == 0 {
+		return
+	}
+
+	out = make([]byte, len(in))
+	copy(out, in)
+	found := false
+	for x := 0; x < len(in); x++ {
+		found = false
+		for y := 0; y < len(allowed); y++ {
+			if in[x] == allowed[y] {
+				found = true
+				break
+			}
+		}
+		if !found {
+			out[x] = c
+		}
+	}
+
+	return
+}
+
 //
 // SkipAfterToken skip all bytes until matched token is found and return the
 // index after the token and boolean true.
-- 
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