feat(config/toml): support jinja templates in toml files

lib/modules/manager/pep621/utils.ts

@@ -127,7 +127,7 @@ export function parsePyProject(
   content: string,
 ): PyProject | null {
   try {
-    const jsonMap = parseToml(content);
+    const jsonMap = parseToml(content, { removeTemplates: true });
     return PyProjectSchema.parse(jsonMap);
   } catch (err) {
     logger.debug(

lib/modules/manager/poetry/artifacts.ts

@@ -95,7 +95,7 @@ export function getPoetryRequirement(
 function getPoetrySources(content: string, fileName: string): PoetrySource[] {
   let pyprojectFile: PoetryFile;
   try {
-    pyprojectFile = parseToml(content) as PoetryFile;
+    pyprojectFile = parseToml(content, { removeTemplates: true }) as PoetryFile;
   } catch (err) {
     logger.debug({ err }, 'Error parsing pyproject.toml file');
     return [];

lib/util/toml.spec.ts

@@ -28,4 +28,25 @@ describe('util/toml', () => {
 
     expect(() => parseToml(input)).toThrow(SyntaxError);
   });
+
+  it('should parse content with templates', () => {
+    const input = codeBlock`
+      [project]
+      name = "{{ value }}"
+
+      {# comment #}
+      [tool.poetry.dependencies]
+      {% if enabled %}
+      python = "^3.12"
+      {%+ endif -%}
+    `;
+    expect(parseToml(input, { removeTemplates: true })).toStrictEqual({
+      project: { name: '' },
+      tool: {
+        poetry: {
+          dependencies: { python: '^3.12' },
+        },
+      },
+    });
+  });
 });

lib/util/toml.ts

@@ -1,6 +1,22 @@
 import { getStaticTOMLValue, parseTOML } from 'toml-eslint-parser';
+import { regEx } from './regex';
 
-export function parse(input: string): unknown {
-  const ast = parseTOML(input);
+interface TomlOptions {
+  removeTemplates?: boolean;
+}
+
+export function parse(input: string, options?: TomlOptions): unknown {
+  const massagedContent = massageContent(input, options);
+  const ast = parseTOML(massagedContent);
   return getStaticTOMLValue(ast);
 }
+
+function massageContent(content: string, options?: TomlOptions): string {
+  if (options?.removeTemplates) {
+    return content
+      .replace(regEx(/{%.+?%}/gs), '')
+      .replace(regEx(/{{.+?}}/gs), '')
+      .replace(regEx(/{#.+?#}/gs), '');
+  }
+  return content;
+}