diff --git a/app.js b/app.js new file mode 100644 index 0000000..205fe1c --- /dev/null +++ b/app.js @@ -0,0 +1,99 @@ +"use strict"; +var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) { + return new (P || (P = Promise))(function (resolve, reject) { + function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } } + function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } } + function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); } + step((generator = generator.apply(thisArg, _arguments || [])).next()); + }); +}; +var __generator = (this && this.__generator) || function (thisArg, body) { + var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g; + return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g; + function verb(n) { return function (v) { return step([n, v]); }; } + function step(op) { + if (f) throw new TypeError("Generator is already executing."); + while (_) try { + if (f = 1, y && (t = y[op[0] & 2 ? "return" : op[0] ? "throw" : "next"]) && !(t = t.call(y, op[1])).done) return t; + if (y = 0, t) op = [0, t.value]; + switch (op[0]) { + case 0: case 1: t = op; break; + case 4: _.label++; return { value: op[1], done: false }; + case 5: _.label++; y = op[1]; op = [0]; continue; + case 7: op = _.ops.pop(); _.trys.pop(); continue; + default: + if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; } + if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; } + if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; } + if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; } + if (t[2]) _.ops.pop(); + _.trys.pop(); continue; + } + op = body.call(thisArg, _); + } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; } + if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true }; + } +}; +exports.__esModule = true; +var fs = require("fs"); +var S = { + re: { + begin: /{{/, + end: /}}/ + }, + opt: { + encoding: 'utf-8' + } +}; +var LOG_TYPE; +(function (LOG_TYPE) { + LOG_TYPE[LOG_TYPE["Info"] = 0] = "Info"; + LOG_TYPE[LOG_TYPE["Warning"] = 1] = "Warning"; + LOG_TYPE[LOG_TYPE["Error"] = 2] = "Error"; +})(LOG_TYPE || (LOG_TYPE = {})); +function logger(type, msg) { + if (typeof msg === 'object') + msg = JSON.stringify(msg); + var typeString = ''; + switch (type) { + case LOG_TYPE.Info: + typeString = 'Info'; + break; + case LOG_TYPE.Warning: + typeString = 'Warning'; + break; + case LOG_TYPE.Error: + typeString = 'Error'; + break; + } + console.log(typeString + ":", msg); +} +function readFile(url) { + return new Promise(function (res, rej) { + fs.readFile(url, function (err, data) { + if (err) + res(); + else + res(data.toString()); + }); + }); +} +function test() { + return __awaiter(this, void 0, void 0, function () { + var html; + return __generator(this, function (_a) { + switch (_a.label) { + case 0: return [4 /*yield*/, readFile('./test.html')]; + case 1: + html = _a.sent(); + if (html === undefined) { + logger(LOG_TYPE.Error, 'No file found'); + return [2 /*return*/]; + } + logger(LOG_TYPE.Info, html); + return [2 /*return*/]; + } + }); + }); +} +test(); diff --git a/app.js.map b/app.js.map new file mode 100644 index 0000000..00b3912 --- /dev/null +++ b/app.js.map @@ -0,0 +1 @@ +{"version":3,"file":"app.js","sourceRoot":"","sources":["app.ts"],"names":[],"mappings":";;AAAA,yBAAwB;AAGxB,MAAM,CAAC,GAAW;IACjB,EAAE,EAAE;QACH,KAAK,EAAE,IAAI;QACX,GAAG,EAAE,IAAI;KACT;IACD,GAAG,EAAE;QACJ,QAAQ,EAAE,OAAO;KACjB;CACD,CAAA;AAED,kBAAkB,GAAW;IAC5B,MAAM,CAAC,IAAI,OAAO,CAAC,CAAC,GAAG,EAAE,GAAG,EAAE,EAAE;QAC/B,EAAE,CAAC,QAAQ,CAAC,GAAG,EAAE,CAAC,GAAG,EAAE,IAAI,EAAE,EAAE;YAC9B,EAAE,CAAC,CAAC,GAAG,CAAC;gBACP,GAAG,CAAC,GAAG,CAAC,CAAA;YACT,IAAI;gBACH,GAAG,CAAC,IAAI,CAAC,QAAQ,EAAE,CAAC,CAAA;QACtB,CAAC,CAAC,CAAA;IACH,CAAC,CAAC,CAAA;AACH,CAAC;AAED,KAAK;IACJ,OAAO,CAAC,GAAG,CAAC,MAAM,QAAQ,CAAC,aAAa,CAAC,CAAC,CAAA;AAC3C,CAAC;AACD,IAAI,EAAE,CAAA"} \ No newline at end of file diff --git a/app.ts b/app.ts new file mode 100644 index 0000000..cf74222 --- /dev/null +++ b/app.ts @@ -0,0 +1,83 @@ +import * as fs from 'fs' +import * as path from 'path' +import * as util from './util' +import * as parser from './parser' +import { Render, LOG_TYPE, options } from './options' +import { replaceVars, addParts } from './parser'; + + +const cache: Map = new Map() + +function logger(type: LOG_TYPE, msg: object | string): void { + if (typeof msg === 'object') + msg = JSON.stringify(msg) + + let typeString: string = '' + + switch (type) { + case LOG_TYPE.Info: + typeString = 'Info' + break + case LOG_TYPE.Warning: + typeString = 'Warning' + break + case LOG_TYPE.Error: + typeString = 'Error' + break + } + + console.log(`${typeString}:`, msg) +} + +async function compile(html: string): Promise { + html = parser.removeComments(html) + + const compiled = replaceVars(html) + + return { + do(data) { + return addParts(data, compiled) + }, + hash: await util.checksum(html, true), + time: Date.now() + } +} + +async function render(template_name: string, data?: any): Promise { + const compiled_path = path.join(options.compiled_dir, template_name) + `.${options.compiled_dir}` + + if (!options.caching || !await util.exists(compiled_path)) { + const template_path = path.join(options.template_dir, template_name) + `.${options.template_ext}` + + const html = await util.readFile(template_path) + if (html === undefined) { + logger(LOG_TYPE.Error, 'No file found') + return + } + else + cache.set(template_name, await compile(html)) + } + + const render = cache.get(template_name) + if (render) { + return render.do(data) + } + else + return +} + +async function go() { + console.log(await render('test', { + title: 'title', + body: { + p: [ + 'omg', + { + check: 'let go' + } + ] + }, + })) +} + +go() \ No newline at end of file diff --git a/options.ts b/options.ts new file mode 100644 index 0000000..83b1dba --- /dev/null +++ b/options.ts @@ -0,0 +1,59 @@ +export const enum LOG_TYPE { + Info, + Warning, + Error, +} + +export interface Render { + do: ((data: any) => string) + hash: string + time: number +} + +export interface Error { + parse: string +} + +export const error: Error = { + parse: 'Parse Error.' +} + +interface Options { + encoding: string + caching: boolean + template_dir: string + template_ext: string + compiled_dir: string + compiled_ext: string +} + +export const options: Options = { + encoding: 'utf-8', + caching: true, + template_dir: './views', + template_ext: 'html', + compiled_dir: './views', + compiled_ext: 'htmlbin', +} + +interface Expressions { + begin: string + ending: string + comment: string + incude: string + if: string + if_else: string + for: string + for_in: string +} + +export const re: Expressions = { + begin: '{{', + ending: '}}', + comment: '#', + incude: '>', + if: '?', + if_else: '!', + for: '*', + for_in: 'in', +} \ No newline at end of file diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..7e8d53c --- /dev/null +++ b/package-lock.json @@ -0,0 +1,14 @@ +{ + "name": "template", + "version": "1.0.0", + "lockfileVersion": 1, + "requires": true, + "dependencies": { + "@types/node": { + "version": "9.3.0", + "resolved": "https://registry.npmjs.org/@types/node/-/node-9.3.0.tgz", + "integrity": "sha512-wNBfvNjzsJl4tswIZKXCFQY0lss9nKUyJnG6T94X/eqjRgI2jHZ4evdjhQYBSan/vGtF6XVXPApOmNH2rf0KKw==", + "dev": true + } + } +} diff --git a/package.json b/package.json new file mode 100644 index 0000000..a511f95 --- /dev/null +++ b/package.json @@ -0,0 +1,18 @@ +{ + "name": "template", + "version": "1.0.0", + "description": "Templating Engine", + "main": "app.js", + "scripts": { + "test": "echo \"Error: no test specified\" && exit 1" + }, + "keywords": [ + "Templating", + "Engine" + ], + "author": "Niccolo Borgioli", + "license": "MIT", + "devDependencies": { + "@types/node": "^9.3.0" + } +} diff --git a/parser.ts b/parser.ts new file mode 100644 index 0000000..dae470c --- /dev/null +++ b/parser.ts @@ -0,0 +1,65 @@ +import { re, error } from "./options"; + +function getFromData(data: any, name: string): string { + let ret: any = data + for (let i of name.trim().split('.')) { + const array = i.match(/\[\w+\]/) + if (array === null) + ret = ret[i] + else { + const index: string = array[0].slice(1, -1) + const num_index: number = parseInt(index[0]) + ret = ret[i.substr(0, array.index)] + ret = num_index === NaN ? ret[index] : ret[num_index] + } + } + return ret +} + +export function addParts(data: any, parts: (((data: any) => string) | string)[]): string { + if (parts.length === 0) return '' + + const part: string | ((data: any) => string) = parts[0] + + return (typeof part === 'string' ? part : part(data)) + addParts(data, parts.slice(1)) +} + +export function removeComments(html: string): string { + return html.replace( + new RegExp(`${re.begin}${re.comment}(.|\n)*?${re.comment}${re.ending}`, 'g'), '') +} + +export function replaceVars(html: string): (((data: any) => string) | string)[] { + + const ret: (((data: any) => string) | string)[] = [] + + let i = html.match(/{{/) // Starting char + while (i !== null) { + if (i.index === undefined) + throw new Error(error.parse) + + // Push text before + ret.push(html.substr(0, i.index)) + + html = html.slice(i.index + i[0].length) + + // Get closing tag + const j = html.match(/}}/) + if (j === null || j.index === undefined) + throw new Error(error.parse) + + const sub: string = html.substring(0, j.index) + + ret.push((data) => { + return getFromData(data, sub) + }) + + html = html.slice(j.index + j[0].length) + + i = html.match(/{{/) // Starting char + } + + ret.push(html) + + return ret +} \ No newline at end of file diff --git a/tsconfig.json b/tsconfig.json new file mode 100644 index 0000000..cd48899 --- /dev/null +++ b/tsconfig.json @@ -0,0 +1,53 @@ +{ + "compilerOptions": { + /* Basic Options */ + "target": "ES2017", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', or 'ESNEXT'. */ + "module": "commonjs", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */ + // "lib": [], /* Specify library files to be included in the compilation: */ + // "allowJs": true, /* Allow javascript files to be compiled. */ + // "checkJs": true, /* Report errors in .js files. */ + // "jsx": "preserve", /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */ + // "declaration": true, /* Generates corresponding '.d.ts' file. */ + // "sourceMap": true, /* Generates corresponding '.map' file. */ + // "outFile": "./", /* Concatenate and emit output to single file. */ + // "outDir": "./", /* Redirect output structure to the directory. */ + // "rootDir": "./", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */ + "removeComments": true, /* Do not emit comments to output. */ + // "noEmit": true, /* Do not emit outputs. */ + // "importHelpers": true, /* Import emit helpers from 'tslib'. */ + // "downlevelIteration": true, /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */ + // "isolatedModules": true, /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */ + /* Strict Type-Checking Options */ + "strict": true, /* Enable all strict type-checking options. */ + "noImplicitAny": true /* Raise error on expressions and declarations with an implied 'any' type. */ + // "strictNullChecks": false, /* Enable strict null checks. */ + // "strictFunctionTypes": true, /* Enable strict checking of function types. */ + // "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */ + // "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */ + /* Additional Checks */ + // "noUnusedLocals": true, /* Report errors on unused locals. */ + // "noUnusedParameters": true, /* Report errors on unused parameters. */ + // "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */ + // "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */ + /* Module Resolution Options */ + // "moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */ + // "baseUrl": "./", /* Base directory to resolve non-absolute module names. */ + // "paths": {}, /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */ + // "rootDirs": [], /* List of root folders whose combined content represents the structure of the project at runtime. */ + // "typeRoots": [], /* List of folders to include type definitions from. */ + // "types": [], /* Type declaration files to be included in compilation. */ + // "allowSyntheticDefaultImports": true, /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */ + // "preserveSymlinks": true, /* Do not resolve the real path of symlinks. */ + /* Source Map Options */ + // "sourceRoot": "./", /* Specify the location where debugger should locate TypeScript files instead of source locations. */ + // "mapRoot": "./", /* Specify the location where debugger should locate map files instead of generated locations. */ + // "inlineSourceMap": true, /* Emit a single file with source maps instead of having a separate file. */ + // "inlineSources": true, /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */ + /* Experimental Options */ + // "experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */ + // "emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */ + }, + "exclude": [ + "./node_modules" + ] +} \ No newline at end of file diff --git a/util.ts b/util.ts new file mode 100644 index 0000000..bd02c49 --- /dev/null +++ b/util.ts @@ -0,0 +1,36 @@ +import * as fs from 'fs' +import * as crypto from 'crypto' + +export function readFile(url: string): Promise { + return new Promise(res => { + fs.readFile(url, (err, data) => { + if (err) + throw new Error(`No such file: ${url}`) + else + res(data.toString()) + }) + }) +} + +export function exists(url: string): Promise { + return new Promise(res => { + fs.exists(url, _ => { + res(_) + }) + }) +} + +export function checksum(url: string, plain = false, alg = 'sha1'): Promise { + return new Promise(res => { + const hash = crypto.createHash(alg) + + if (plain) { + res(hash.update(url).digest('hex')) + } + else { + const stream = fs.createReadStream(url) + stream.on('data', data => hash.update(data, 'utf8')) + stream.on('end', _ => { res(hash.digest('hex')) }) + } + }) +} \ No newline at end of file diff --git a/views/test.html b/views/test.html new file mode 100644 index 0000000..0290f7a --- /dev/null +++ b/views/test.html @@ -0,0 +1,17 @@ + + + + + + + + + {{# asdfkjashdlkfjashdlkj #}} +
+

{{ title }}

+

{{ body.p[1].check }}

+
+ + + +
\ No newline at end of file