Setup pre-commit

app/build.gradle

@@ -3,6 +3,7 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
 apply plugin: 'kotlin-kapt'
 apply from: "../ktlint.gradle"
+apply from: rootProject.file('install-git-hooks.gradle')
 
 android {
     compileSdkVersion 29

common-utils/build.gradle

@@ -1,6 +1,7 @@
 apply plugin: 'java-library'
 apply plugin: 'kotlin'
 apply from: "../ktlint.gradle"
+apply from: rootProject.file('install-git-hooks.gradle')
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])

epub2.0-parser/build.gradle

@@ -1,6 +1,7 @@
 apply plugin: 'java-library'
 apply plugin: 'kotlin'
 apply from: "../ktlint.gradle"
+apply from: rootProject.file('install-git-hooks.gradle')
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])

install-git-hooks.gradle

@@ -0,0 +1,7 @@
+task installGitHooks(type: Copy) {
+    from new File(rootProject.rootDir, 'pre-commit')
+    into { new File(rootProject.rootDir, '.git/hooks') }
+    fileMode 0777
+}
+
+build.dependsOn installGitHooks

pre-commit

@@ -0,0 +1,13 @@
+#!/bin/sh
+# From gist at https://gist.github.com/chadmaughan/5889802
+
+echo '[git hook] executing ktlint before commit'
+
+# run ktlint with the gradle wrapper
+./gradlew ktlint --daemon
+
+RESULT=$?
+
+# return 1 exit code if running checks fails
+[ $RESULT -ne 0 ] && exit 1
+exit 0