feat: add pnpm create template

fix #9

Author: HerringtonDarkholme

packages/toml/README.md

@@ -8,7 +8,7 @@ In a pnpm project, run:
 pnpm install @ast-grep/lang-toml
 pnpm install @ast-grep/napi
 # install the tree-sitter-cli if no prebuild is available
-pnpm install @tree-sitter/cli
+pnpm install @tree-sitter/cli --save-dev
 ```
 
 ## Usage

scripts/create-lang/index.ts

@@ -1,4 +1,7 @@
 import prompts from 'prompts'
+import path from 'node:path'
+import fs from 'node:fs/promises'
+import { execSync } from 'node:child_process'
 
 function required(s: string): string | true {
   if (s.length === 0) {
@@ -7,8 +10,21 @@ function required(s: string): string | true {
   return true
 }
 
+function isValidPackageName(projectName: string) {
+  return /^(?:@[a-z\d\-*~][a-z\d\-*._~]*\/)?[a-z\d\-~][a-z\d\-._~]*$/.test(
+    projectName,
+  ) || 'Invalid package name'
+}
+
+
 function askConfiguration() {
   return prompts([
+    {
+      type: 'text',
+      name: 'packageName',
+      message: 'Package name',
+      validate: isValidPackageName,
+    },
     {
       type: 'text',
       name: 'name',
@@ -19,11 +35,11 @@ function askConfiguration() {
       type: 'text',
       name: 'treeSitterPackage',
       message: 'Tree-sitter package to use',
-      validate: required,
+      validate: isValidPackageName,
     },
     {
       type: 'list',
-      name: 'extension',
+      name: 'extensions',
       message: 'File extensions used by the language, comma separated',
       separator: ',',
       validate: required,
@@ -40,22 +56,50 @@ function askConfiguration() {
   ])
 }
 
-async function copyTemplate() {
+type Answers = Awaited<ReturnType<typeof askConfiguration>>
+
+function copyTemplate(targetDir: string) {
+  const templateDir = path.join(__dirname, 'template')
+  return fs.cp(templateDir, targetDir, { recursive: true })
 }
 
 function removeDotFiles() {
 }
-function renameFiles() {
-  // Rename files
+
+async function renameFiles(dir: string, answer: Answers) {
+  const name: Record<string, string> = {
+    $$PACKAGE_NAME$$: answer.packageName,
+    $$NAME$$: answer.name,
+    $$TREE_SITTER_PACKAGE$$: answer.name,
+    $$EXTENSIONS$$: JSON.stringify(answer.extensions),
+    $$EXPANDO_CHAR$$: JSON.stringify(answer.expandoChar),
+  }
+  for (const file of await fs.readdir(dir)) {
+    const filePath = path.join(dir, file)
+    const stats = await fs.stat(filePath)
+    if (stats.isDirectory()) {
+      renameFiles(filePath, answer)
+    } else {
+      const content = await fs.readFile(filePath, 'utf-8')
+      const newContent = content.replace(/(\$\$[A-Z_]+\$\$)/g, (match) => {
+        return name[match] || match
+      })
+      await fs.writeFile(filePath, newContent)
+    }
+  }
+}
+function installTreeSitterPackage(answer: Answers) {
+  execSync(`pnpm install ${answer.treeSitterPackage} --save-dev`)
 }
 
 async function main() {
+  const cwd = process.cwd()
   const config = await askConfiguration()
-  await copyTemplate()
+  await copyTemplate(cwd)
   if (process.argv.slice(2).includes('--skip-dot-files')) {
     removeDotFiles()
   }
-  renameFiles()
+  await renameFiles(cwd, config)
 }
 
 main()

scripts/create-lang/template/README.md

@@ -1,24 +1,24 @@
-# ast-grep napi language for $NAME$
+# ast-grep napi language for $$NAME$$
 
 ## Installation
 
 In a pnpm project, run:
 
 ```bash
-pnpm install $PACKAGE_NAME$
+pnpm install $$PACKAGE_NAME$$
 pnpm install @ast-grep/napi
 # install the tree-sitter-cli if no prebuild is available
-pnpm install @tree-sitter/cli
+pnpm install @tree-sitter/cli --save-dev
 ```
 
 ## Usage
 
 ```js
-import $NAME$ from '$PACKAGE_NAME$'
+import $$NAME$$ from '$$PACKAGE_NAME$$'
 import { registerDynamicLanguage, parse } from '@ast-grep/napi'
 
-registerDynamicLanguage({ $NAME$ })
+registerDynamicLanguage({ $$NAME$$ })
 
-const sg = parse('$NAME$', `your code`)
+const sg = parse('$$NAME$$', `your code`)
 sg.root().kind()
 ```

scripts/create-lang/template/index.js

@@ -4,6 +4,6 @@ const libPath = path.join(__dirname, 'parser.so')
 module.exports = {
   libraryPath: libPath,
   extensions: $$EXTENSIONS$$,
-  languageSymbol: $$LANGUAGE_SYMBOL$$,
-  expandoChar: '_',
+  languageSymbol: 'tree_sitter_$$NAME$$',
+  expandoChar: '$$EXPANDO_CHAR$$',
 }

scripts/create-lang/template/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "@ast-grep/lang-$$NAME$$",
+  "name": "$$PACKAGE_NAME$$",
   "version": "0.0.1",
   "description": "",
   "main": "index.js",