default to compile in, but also allow plugins

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

walker/walkers/readFuzz/fuzz.go

@@ -0,0 +1,30 @@
+package readFuzz
+
+import (
+	"io"
+	"io/ioutil"
+	"os"
+
+	"git.thisco.de/vbatts/fuzz-walker/walker"
+)
+
+func init() {
+	walker.RegisterFuzzFunc(Name, FuzzFunc)
+}
+
+const Name = "readFuzz"
+
+func FuzzFunc(path string, info os.FileInfo) error {
+	if !info.Mode().IsRegular() {
+		return nil
+	}
+
+	fd, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer fd.Close()
+
+	_, err = io.Copy(ioutil.Discard, fd)
+	return err
+}

walker/walkers/readFuzz/plugin.go

@@ -1,12 +1,12 @@
+// +build ignore
+
 package main
 
 import (
-	"io"
-	"io/ioutil"
 	"os"
-	"time"
 
 	"git.thisco.de/vbatts/fuzz-walker/walker"
+	"git.thisco.de/vbatts/fuzz-walker/walker/walkers/readFuzz"
 )
 
 // NewFuzzer creates the fuzzer for this plugin
@@ -17,20 +17,9 @@ func NewFuzzer() (walker.Fuzzer, error) {
 type myFuzzer struct{}
 
 func (mf myFuzzer) Name() string {
-	return "readFuzz"
+	return readFuzz.Name
 }
 
-func (mf myFuzzer) Func(path string, info os.FileInfo, timeout time.Duration) error {
-	if !info.Mode().IsRegular() {
-		return nil
-	}
-
-	fd, err := os.Open(path)
-	if err != nil {
-		return err
-	}
-	defer fd.Close()
-
-	_, err = io.Copy(ioutil.Discard, fd)
-	return err
+func (mf myFuzzer) Func(path string, info os.FileInfo) error {
+	return readFuzz.FuzzFunc(path, info)
 }