Update go 1.18

.github/workflows/unittest.yml

@@ -6,7 +6,7 @@ jobs:
   unit-test:
     strategy:
       matrix:
-        go: ["1.11", "1.12", "1.13", "1.14"]
+        go: ['1.18']
         platform: [ubuntu-latest]
     runs-on: ${{ matrix.platform }}
     name: Go ${{ matrix.go }} [${{ matrix.platform }}]

.gitignore

@@ -26,4 +26,6 @@ _testmain.go
 
 pre-commit
 main
-build
+build
+
+.vscode/

CHANGELOG.md

@@ -8,9 +8,9 @@
 
 ## 0.5.0 2018-09-17
 
-- fix [#8](https://github.com/ONSdigital/git-diff-check/issues/8) ignore lines in a patch that are being removed rather than added / changed
+- fix [#8](https://github.com/necrophonic/git-diff-check/issues/8) ignore lines in a patch that are being removed rather than added / changed
 - adds `-version` option to display the current cli version
-- fix [#13](https://github.com/ONSdigital/git-diff-check/issues/13) add basic version check
+- fix [#13](https://github.com/necrophonic/git-diff-check/issues/13) add basic version check
 
 ## 0.4.0 2018-04-25
 

README.md

@@ -2,6 +2,8 @@
 
 A simple library for checking git diff output for potentially sensitive information
 
+(forked from my original at `ONSdigital/git-diff-check`)
+
 ## Pre-commit hook
 
 *Requires git 2.9+*
@@ -19,12 +21,12 @@ to test changes before you commit.
 1. Run the installer:
 
 ```sh
-$ curl -L https://raw.githubusercontent.com/ONSdigital/git-diff-check/master/install.sh | sh
+$ curl -L https://raw.githubusercontent.com/necrophonic/git-diff-check/master/install.sh | sh
 ```
 
 - **For other platforms**
 
-1. Download the latest [release](https://github.com/ONSdigital/git-diff-check/releases) for your platform
+1. Download the latest [release](https://github.com/necrophonic/git-diff-check/releases) for your platform
 1. Create (if not already) a folder to store global git hooks (e.g. `${HOME}/.githooks`)
 1. Unzip the release and place the `pre-commit` script in the global hooks folder (ensure it's executable)
 1. Configure git to use the hooks:
@@ -35,19 +37,19 @@ $ git config --global core.hooksPath <path-to-global-hooks-folder>
 
 ### From Source
 
-(requires Go 1.11+)
+(requires Go 1.18+)
 
 ```sh
-$ go get github.com/ONSdigital/git-diff-check
+$ go get github.com/necrophonic/git-diff-check
 # or ..
 $ cd ${GOPATH}
-$ git clone https://github.com/ONSdigital/git-diff-check.git src/github.com/ONSdigital/git-diff-check
+$ git clone https://github.com/necrophonic/git-diff-check.git src/github.com/necrophonic/git-diff-check
 ```
 
 Then build:
 
 ```sh
-$ cd ${GOPATH}/src/github.com/ONSdigital/git-diff-check
+$ cd ${GOPATH}/src/github.com/necrophonic/git-diff-check
 $ go build -o pre-commit cmd/pre-commit/main.go
 ```
 

cmd/pre-commit/main.go

@@ -13,7 +13,7 @@ import (
 	"path/filepath"
 	"time"
 
-	"github.com/ONSdigital/git-diff-check/diffcheck"
+	"github.com/necrophonic/git-diff-check/diffcheck"
 )
 
 const (
@@ -24,7 +24,7 @@ const (
 
 const (
 	// Repository defines the github repo where the source code is located
-	Repository = "ONSdigital/git-diff-check"
+	Repository = "necrophonic/git-diff-check"
 
 	// LatestVersion gives the api location of the most recent tag in github
 	LatestVersion = "https://api.github.com/repos/" + Repository + "/releases/latest"

diffcheck/diffcheck.go

@@ -11,8 +11,8 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/ONSdigital/git-diff-check/entropy"
-	"github.com/ONSdigital/git-diff-check/rule"
+	"github.com/necrophonic/git-diff-check/entropy"
+	"github.com/necrophonic/git-diff-check/rule"
 )
 
 type (

diffcheck/diffcheck_test.go

@@ -5,7 +5,7 @@ import (
 	"os/exec"
 	"testing"
 
-	"github.com/ONSdigital/git-diff-check/diffcheck"
+	"github.com/necrophonic/git-diff-check/diffcheck"
 )
 
 type testCase struct {

entropy/entropy.go

@@ -26,8 +26,12 @@ func CalculateShannon(data []byte) float64 {
 	}
 	entropy := 0.0
 	pX := 0.0
-	for x := 0; x < 256; x++ {
-		pX = float64(bytes.Count(data, []byte(string(x)))) / float64(len(data))
+
+	var start int32 = 0
+	var end int32 = 255
+
+	for x := start; x <= end; x++ {
+		pX = float64(bytes.Count(data, []byte{byte(x)})) / float64(len(data))
 		if pX > 0 {
 			entropy += -pX * math.Log2(pX)
 		}

entropy/entropy_test.go

@@ -9,7 +9,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/ONSdigital/git-diff-check/entropy"
+	"github.com/necrophonic/git-diff-check/entropy"
 )
 
 var (

go.mod

@@ -1,3 +1,3 @@
-module github.com/ONSdigital/git-diff-check
+module github.com/necrophonic/git-diff-check
 
-go 1.14
+go 1.18

install.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env sh
 
-repo='ONSdigital/git-diff-check'
+repo='necrophonic/git-diff-check'
 binary='pre-commit'
 
 get_latest_release() { # From https://gist.github.com/lukechilds/a83e1d7127b78fef38c2914c4ececc3c

rule/rule_test.go

@@ -3,7 +3,7 @@ package rule_test
 import (
 	"testing"
 
-	"github.com/ONSdigital/git-diff-check/rule"
+	"github.com/necrophonic/git-diff-check/rule"
 )
 
 func TestInitRules(t *testing.T) {