feat: --excludeCommits ignores commits which message match this pattern

src/lib/cli.ts

@@ -19,7 +19,8 @@ export function runCli(argv: string[], version = 'unknown'): ExitCode {
     .option('-i, --include [paths]', 'include regexp file filter', parseList, [])
     .option('-e, --exclude [paths]', 'exclude regexp file filter', parseList, [])
     .option('--fix', 'adds or updates copyright header to files', false)
-    .option('--copyrightHolder <name>', 'Copyright Holder');
+    .option('--copyrightHolder <name>', 'Copyright Holder')
+    .option('--excludeCommits [pattern]', 'ignores commits which message match this pattern');
 
   const options: Options = commander.parse(argv) as any;
 
@@ -32,7 +33,8 @@ export function runCli(argv: string[], version = 'unknown'): ExitCode {
     include: options.include,
     fix: options.fix,
     exclude: options.exclude,
-    copyrightHolder: options.copyrightHolder
+    copyrightHolder: options.copyrightHolder,
+    excludeCommits: options.excludeCommits,
   });
 
   return result.unFixedFiles.length ? ExitCode.ERROR : ExitCode.OK;

src/lib/copyright-header.ts

@@ -20,6 +20,7 @@ export interface FileFilter {
 export interface Options extends FileFilter {
   readonly copyrightHolder: string;
   readonly fix: boolean;
+  readonly excludeCommits?: string;
 }
 
 interface ValidationResult {
@@ -28,7 +29,7 @@ interface ValidationResult {
 
 export function ensureUpdatedCopyrightHeader(opts: Options): ValidationResult {
   const files = collectFiles(opts);
-  const fileInfos: FileInfo[] = files.map(getFileInfoFromGit);
+  const fileInfos: FileInfo[] = files.map(f => getFileInfoFromGit(f, opts.excludeCommits));
   const unFixedFiles = [];
 
   for (const fileInfo of fileInfos) {

src/lib/git.spec.ts

@@ -3,13 +3,18 @@
 // tslint:disable:no-expression-statement no-object-mutation
 
 import { test } from 'ava';
-import { getFileInfoFromGit } from './git';
+import { getFileInfoFromGit, testExports } from './git';
 
-test.only('getFileInfoFromGit', t => {
+test('getFileInfoFromGit', t => {
   const fileinfo = getFileInfoFromGit('README.md');
 
   t.is(fileinfo.filename, 'README.md');
   t.is(fileinfo.createdYear, 2018);
   t.true(!isNaN(fileinfo.updatedYear));
   t.true(fileinfo.updatedYear >= 2018);
 });
+
+test('invertedGrepOptions', t => {
+  t.is(testExports.invertedGrepOptions('pattern'), '--invert-grep --grep=pattern');
+  t.is(testExports.invertedGrepOptions(), '');
+});

src/lib/git.ts

@@ -14,12 +14,22 @@ export function getGitFiles(): string[] {
   return execToLines('git ls-files');
 }
 
-export function getFileInfoFromGit(filename: string): FileInfo {
-  const logDates = execToLines(`git log --format=%aD --follow -- ${filename}`);
+
+function invertedGrepOptions(excludeCommitPattern?: string): string {
+  return excludeCommitPattern ? '--invert-grep --grep=' + excludeCommitPattern : '';
+}
+
+export function getFileInfoFromGit(filename: string, excludeCommits?: string): FileInfo {
+  const grepFlag = invertedGrepOptions(excludeCommits);
+  const logDates = execToLines(`git log --format=%aD --follow ${grepFlag} -- ${filename}`);
 
   return {
     filename,
     createdYear: new Date(logDates[logDates.length - 1]).getFullYear(),
     updatedYear: new Date(logDates[0]).getFullYear()
   };
 }
+
+export const testExports = {
+  invertedGrepOptions
+};