Add custom ignore matcher

README.md

@@ -75,6 +75,10 @@ You can configure the action further by providing inputs:
   comment. Use `{todo}` to insert the Todo content
 - `custom_todo_matcher`: (**optional**) Add custom comment indicators to match
   TODOs. Default matches `//`, `*` and `#` followed by `TODO` or `FIXME`.
+- `custom_ignore_matcher`: (**optional**) Add custom regex to ignore TODOs that
+  match in the same line. Example: Setting
+  `custom_ignore_matcher: "/.*ignore.*/"` will ignore TODOs like
+  `// TODO ignore`.
 
 ```yaml
 steps:

__test__/todo-finder.test.ts

@@ -301,3 +301,66 @@ describe('custom todo matcher', () => {
     expect(fileTodos).toEqual(expectedTodos)
   })
 })
+
+describe('custom ignore matcher', () => {
+  it('should ignore matches', () => {
+    const customIgnoreMatcher = 'comment'
+    const fileTodos = findTodos(
+      testData.mixedTodoDiff,
+      [],
+      undefined,
+      customIgnoreMatcher
+    )
+
+    const expectedTodos: Todo[] = [
+      {
+        filename: 'README.md',
+        line: 31,
+        content: 'TODO here',
+        isAdded: true
+      },
+      {
+        filename: 'lib/second.js',
+        line: 26,
+        content: 'TODO - upper case with much space',
+        isAdded: true
+      },
+      {
+        filename: 'lib/second.js',
+        line: 27,
+        content: 'todo - lower case with space',
+        isAdded: true
+      },
+      {
+        filename: 'lib/second.js',
+        line: 28,
+        content: 'todo - lower case no space',
+        isAdded: true
+      }
+    ]
+
+    const expectedIgnoredTodos: Todo[] = [
+      {
+        filename: 'lib/first.js',
+        line: 21,
+        content: 'TODO removed comment',
+        isAdded: false
+      },
+      {
+        filename: 'lib/second.js',
+        line: 30,
+        content: 'todo comment',
+        isAdded: true
+      },
+      {
+        filename: 'lib/second.js',
+        line: 33,
+        content: 'todo - In comment block',
+        isAdded: true
+      }
+    ]
+
+    expect(fileTodos).toEqual(expectedTodos)
+    expect(fileTodos).not.toContain(expectedIgnoredTodos)
+  })
+})

dist/index.js

@@ -29330,6 +29330,7 @@ function run() {
             const commentBodyTemplate = core.getInput('comment_body');
             const commentCheckboxTemplate = core.getInput('comment_checkbox');
             const customTodoMatcher = core.getInput('custom_todo_matcher');
+            const customIgnoreMather = core.getInput('custom_ignore_matcher');
             const octokit = github.getOctokit(token);
             const botName = 'github-actions[bot]';
             const pr = github.context.payload.pull_request;
@@ -29348,7 +29349,7 @@ function run() {
             }
             else if (commentOnTodo) {
                 const prDiff = yield getPrDiff(octokit, pr.base.sha, pr.head.sha);
-                const todos = (0, todo_finder_1.findTodos)(prDiff, excludePatterns, customTodoMatcher);
+                const todos = (0, todo_finder_1.findTodos)(prDiff, excludePatterns, customTodoMatcher, customIgnoreMather);
                 console.log('Todos:', JSON.stringify(todos));
                 yield commentPr(octokit, pr.number, botName, todos, commentBodyTemplate, commentCheckboxTemplate);
             }
@@ -29508,7 +29509,7 @@ function getTodosForDiff(pat, owner, repo, base, head) {
             basehead: `${base}...${head}`
         });
         const prDiff = ((_a = response === null || response === void 0 ? void 0 : response.data) === null || _a === void 0 ? void 0 : _a.files) || [];
-        const todos = (0, todo_finder_1.findTodos)(prDiff, [], '{}');
+        const todos = (0, todo_finder_1.findTodos)(prDiff, [], '{}', '');
         console.log('Todos:', JSON.stringify(todos));
     });
 }
@@ -29525,7 +29526,7 @@ exports.getTodosForDiff = getTodosForDiff;
 Object.defineProperty(exports, "__esModule", ({ value: true }));
 exports.findTodos = void 0;
 const minimatch_1 = __nccwpck_require__(4501);
-function findTodos(prDiff, exclude = [], customTodoMatcherString = '{}') {
+function findTodos(prDiff, exclude = [], customTodoMatcherString = '{}', customIgnoreMatcherString = '') {
     // Find first number in string
     const firstAddedLineRegex = /\+(\d+)/;
     const firstRemovedLineRegex = /-(\d+)/;
@@ -29579,7 +29580,7 @@ function findTodos(prDiff, exclude = [], customTodoMatcherString = '{}') {
             for (const line of lines) {
                 const isAdded = line.startsWith('+');
                 const isDeleted = line.startsWith('-');
-                const todo = getTodoIfFound(line, customMatcher);
+                const todo = getTodoIfFound(line, customMatcher, customIgnoreMatcherString);
                 if (isDeleted) {
                     if (todo !== undefined) {
                         todos.push({
@@ -29624,16 +29625,16 @@ function getTodoMatcherForFile(filename, customTodoMatcherString) {
     }
     return customMatcher;
 }
-function getTodoIfFound(line, customMatcher = []) {
-    const regex = new RegExp(buildTodoMatcher(customMatcher), 'i');
+function getTodoIfFound(line, customMatcher = [], customIgnoreMatcher) {
+    const regex = new RegExp(buildTodoMatcher(customMatcher, customIgnoreMatcher), 'i');
     const match = line.match(regex);
     if (match === undefined || match === null || (match === null || match === void 0 ? void 0 : match.length) === 0)
         return;
     // remove html closing comment tag if present
     const todo = match[1].replace('-->', '').trim();
     return todo;
 }
-function buildTodoMatcher(customMatcher) {
+function buildTodoMatcher(customMatcher, customIgnoreMatcher) {
     let todoMatcher;
     if (customMatcher.length === 0) {
         // default todo matcher
@@ -29657,7 +29658,7 @@ function buildTodoMatcher(customMatcher) {
         '$',
         '.'
     ];
-    const escapedPatterns = todoMatcher.map(pattern => {
+    const escapePattern = (pattern) => {
         let escapedPattern = '';
         for (const char of pattern) {
             if (needToEscape.includes(char)) {
@@ -29668,8 +29669,13 @@ function buildTodoMatcher(customMatcher) {
             }
         }
         return escapedPattern;
-    });
-    const regex = `(?:${escapedPatterns.join('|')}).*?(TODO.*|FIXME.*)`;
+    };
+    const escapedTodoPatterns = todoMatcher.map(matcher => escapePattern(matcher));
+    const escapedIgnorePatterns = escapePattern(customIgnoreMatcher);
+    const ignoreRegex = customIgnoreMatcher
+        ? `(?!.*${escapedIgnorePatterns}.*)`
+        : '';
+    const regex = `(?:${escapedTodoPatterns.join('|')})${ignoreRegex}.*?(TODO.*|FIXME.*)`;
     return regex;
 }
 

src/main.ts

@@ -14,6 +14,7 @@ export async function run(): Promise<void> {
     const commentBodyTemplate = core.getInput('comment_body')
     const commentCheckboxTemplate = core.getInput('comment_checkbox')
     const customTodoMatcher = core.getInput('custom_todo_matcher')
+    const customIgnoreMather = core.getInput('custom_ignore_matcher')
 
     const octokit = github.getOctokit(token)
     const botName = 'github-actions[bot]'
@@ -38,7 +39,12 @@ export async function run(): Promise<void> {
     } else if (commentOnTodo) {
       const prDiff = await getPrDiff(octokit, pr.base.sha, pr.head.sha)
 
-      const todos = findTodos(prDiff, excludePatterns, customTodoMatcher)
+      const todos = findTodos(
+        prDiff,
+        excludePatterns,
+        customTodoMatcher,
+        customIgnoreMather
+      )
       console.log('Todos:', JSON.stringify(todos))
       await commentPr(
         octokit,
@@ -239,6 +245,6 @@ export async function getTodosForDiff(
 
   const prDiff = response?.data?.files || []
 
-  const todos = findTodos(prDiff, [], '{}')
+  const todos = findTodos(prDiff, [], '{}', '')
   console.log('Todos:', JSON.stringify(todos))
 }

src/todo-finder.ts

@@ -4,7 +4,8 @@ import { minimatch } from 'minimatch'
 export function findTodos(
   prDiff: PrDiff,
   exclude: string[] = [],
-  customTodoMatcherString = '{}'
+  customTodoMatcherString = '{}',
+  customIgnoreMatcherString = ''
 ): Todo[] {
   // Find first number in string
   const firstAddedLineRegex = /\+(\d+)/
@@ -81,7 +82,11 @@ export function findTodos(
         const isAdded = line.startsWith('+')
         const isDeleted = line.startsWith('-')
 
-        const todo = getTodoIfFound(line, customMatcher)
+        const todo = getTodoIfFound(
+          line,
+          customMatcher,
+          customIgnoreMatcherString
+        )
 
         if (isDeleted) {
           if (todo !== undefined) {
@@ -133,17 +138,24 @@ function getTodoMatcherForFile(
 
 function getTodoIfFound(
   line: string,
-  customMatcher: string[] = []
+  customMatcher: string[] = [],
+  customIgnoreMatcher: string
 ): string | undefined {
-  const regex = new RegExp(buildTodoMatcher(customMatcher), 'i')
+  const regex = new RegExp(
+    buildTodoMatcher(customMatcher, customIgnoreMatcher),
+    'i'
+  )
   const match = line.match(regex)
   if (match === undefined || match === null || match?.length === 0) return
   // remove html closing comment tag if present
   const todo = match[1].replace('-->', '').trim()
   return todo
 }
 
-function buildTodoMatcher(customMatcher: string[]): string {
+function buildTodoMatcher(
+  customMatcher: string[],
+  customIgnoreMatcher: string
+): string {
   let todoMatcher: string[]
   if (customMatcher.length === 0) {
     // default todo matcher
@@ -168,7 +180,7 @@ function buildTodoMatcher(customMatcher: string[]): string {
     '.'
   ]
 
-  const escapedPatterns = todoMatcher.map(pattern => {
+  const escapePattern = (pattern: string): string => {
     let escapedPattern = ''
     for (const char of pattern) {
       if (needToEscape.includes(char)) {
@@ -178,8 +190,15 @@ function buildTodoMatcher(customMatcher: string[]): string {
       }
     }
     return escapedPattern
-  })
+  }
+
+  const escapedTodoPatterns = todoMatcher.map(matcher => escapePattern(matcher))
+  const escapedIgnorePatterns = escapePattern(customIgnoreMatcher)
+
+  const ignoreRegex = customIgnoreMatcher
+    ? `(?!.*${escapedIgnorePatterns}.*)`
+    : ''
 
-  const regex = `(?:${escapedPatterns.join('|')}).*?(TODO.*|FIXME.*)`
+  const regex = `(?:${escapedTodoPatterns.join('|')})${ignoreRegex}.*?(TODO.*|FIXME.*)`
   return regex
 }