Add strict checks with vet, golint and gofmt

Makefile

@@ -12,12 +12,23 @@ checkgopath:
 
 getdeps: checkdeps checkgopath
 	@go get github.com/tools/godep && echo "Installed godep"
-
-verifier: getdeps
-	@echo "Checking for offending code"
-	@go run buildscripts/verifier.go ${PWD}
-
-build-all: verifier
+	@go get github.com/golang/lint/golint && echo "Installed golint"
+	@go get golang.org/x/tools/cmd/vet && echo "Installed vet"
+
+verifiers: getdeps vet fmt lint
+
+vet:
+	@echo "Running $@"
+	@go vet ./...
+fmt:
+	@echo "Running $@"
+	@test -z "$$(gofmt -s -l . | grep -v Godeps/_workspace/src/ | tee /dev/stderr)" || \
+		echo "+ please format Go code with 'gofmt -s'"
+lint:
+	@echo "Running $@"
+	@test -z "$$(golint ./... | grep -v Godeps/_workspace/src/ | tee /dev/stderr)"
+
+build-all: verifiers
 	@echo "Building Libraries"
 	@godep go generate ./...
 	@godep go build ./...

pkg/utils/checksum/crc32c/crc32c_darwin.go

@@ -17,8 +17,8 @@
 package crc32c
 
 import (
-	"io"
 	"hash/crc32"
+	"io"
 )
 
 var castanagoliTable = crc32.MakeTable(crc32.Castagnoli)

pkg/utils/crypto/sha1/sha1_linux.go

@@ -100,10 +100,10 @@ func (d *digest) Write(p []byte) (nn int, err error) {
 }
 
 // Return checksum bytes
-func (d0 *digest) Sum(in []byte) []byte {
+func (d *digest) Sum(in []byte) []byte {
 	// Make a copy of d0 so that caller can keep writing and summing.
-	d := *d0
-	hash := d.checkSum()
+	d0 := *d
+	hash := d0.checkSum()
 	return append(in, hash[:]...)
 }
 

pkg/utils/crypto/sha1/sha1block_linux.go

@@ -17,5 +17,3 @@ func blockAVX2(dig *digest, p []byte) {
 func blockSSE3(dig *digest, p []byte) {
 	C.sha1_update_intel((*C.int32_t)(unsafe.Pointer(&dig.h[0])), (*C.char)(unsafe.Pointer(&p[0])), (C.size_t)(len(p)/chunk))
 }
-
-

pkg/utils/crypto/sha256/sha256_linux.go

@@ -106,10 +106,10 @@ func (d *digest) Write(p []byte) (nn int, err error) {
 }
 
 // Return sha256 sum in bytes
-func (d0 *digest) Sum(in []byte) []byte {
+func (d *digest) Sum(in []byte) []byte {
 	// Make a copy of d0 so that caller can keep writing and summing.
-	d := *d0
-	hash := d.checkSum()
+	d0 := *d
+	hash := d0.checkSum()
 	return append(in, hash[:]...)
 }
 

pkg/utils/crypto/sha512/sha512_linux.go

@@ -107,11 +107,10 @@ func (d *digest) Write(p []byte) (nn int, err error) {
 }
 
 // Calculate sha512
-func (d0 *digest) Sum(in []byte) []byte {
+func (d *digest) Sum(in []byte) []byte {
 	// Make a copy of d0 so that caller can keep writing and summing.
-	d := new(digest)
-	*d = *d0
-	hash := d.checkSum()
+	d0 := *d
+	hash := d0.checkSum()
 	return append(in, hash[:]...)
 }