/smartyMonkey

analysis smarty's grammar with js, then you can use smarty both on server and client

Primary LanguageJavaScript

smartyMonkey

用js解析smarty语法的模板,达到服务端smarty与客户端共享同一套模板的目的
analysis smarty's grammar with js, then you can use smarty both on server and client

非常感谢DOT引擎,其实smartyMonkey的思路和很多写法都借鉴了DOT。
安装(install):
可以通过npm安装(you can install with npm):
npm install smartymonkey

或者直接下载使用。
or just download it

如何使用(how to use):

在服务端(node环境下)我们可以直接引用smartyMonkey模块,require('src/smartyMonkey');
该模块的导出,是一个create方法,可以创建smartyMonkey的实例
in a server enviroment(node enviroment),we can just require smartyMonkey.require('src/smartyMonkey');
this module,export a create method, which can create a instance of smartyMonkey

如(for example):
var smartyMonkey = require('smartyMonkey');
var sm = smartyMonkey.create();
var tpl_fn = sm.compile(data);
var out = tpl_fn('monkey');

在客户端(浏览器环境下),smartyMonkey会暴露一个smartyMonkey对象到执行js的上下文中,一般是window,这个对象同样有一个create方法:
on a client enviroment, you include smartyMonkey in your page, and then smartyMonky will export a object to window, this object is window.smartyMonkey, it also have a create method, which can create a instance of smartyMonkey

<script src="./smartyMonkey.js"></script>
<script>
var smartyMonkey = window.smartyMonkey
var sm = smartyMonkey.create();
var tpl_fn = sm.compile(data);
var out = tpl_fn('monkey');
</script>

小贴士(Tips):
 在实际使用过程中,如果是在客户端编译的话,那么我们肯定要把模板的源代码传到客户端,但是我们写的模板代码,会在服务端被smarty解析掉,所以,为了把模板源代码传送到客户端,我们可以使用smarty的literal标签,防止自己的smarty模板在服务端被解析掉。

目前支持的smarty语法(current support grammer):

###① 输出(print)

  1. 首先,我们要写一个模板(hello.tpl):
    hello {%*test*%}{%$it%}

  2. 然后,我们调用smatyMonkey对模板进行编译,及使用:
    var smartyMonkey = require('../../src/smartyMonkey');
    var fs = require('fs');
    fs.readFile(
     './back.tpl',
     'utf-8',
     function (err, data) {
      var sm = smartyMonkey.create();
      var tpl_fn = sm.compile(data);
      var out = tpl_fn('monkey');
      console.log(out);
     }
    );

  3. 输出:
    hello monkey

###② 循环(loop)

  1. 首先,我们要写一个模板(loop.tpl):
    {%foreach $loop1 as $key => $value%}
     <div>key is: {%$key%}</div>
     <div>val is: {%$value%}</div>
    {%/foreach%}

  2. 接着我们编译一下含有foreach循环的模板(index.js): var smartyMonkey = require('../../src/smartyMonkey');
    var fs = require('fs');
    fs.readFile(
     './loop.tpl',
     'utf-8',
     function (err, data) {
      sm = smartyMonkey.create();
      var tpl_fn = sm.compile(data, {varnames: ['loop1']});
      var out = tpl_fn(['h', 'e', 'l', 'l', 'o']);
      console.log(out);
     }
    );

  3. 输出:
    <div>key is: 0</div> <div>val is: h</div> <div>key is: 1</div> <div>val is: e</div> <div>key is: 2</div> <div>val is: l</div> <div>key is: 3</div> <div>val is: l</div> <div>key is: 4</div> <div>val is: o</div>


foreach的另一种写法:
1. 模板:
{%foreach from=$loop1 key=key item=value name=loop1%}
 <div>key is: {%$key%}</div>
 <div>val is: {%$value%}</div>
 <div>index is: {%$smarty.foreach.loop1.index%}</div>
{%/foreach%}
2. 调用:
同上

3. 输出:
<div>key is: 0</div> <div>val is: h</div> <div>index is: 0</div> <div>key is: 1</div> <div>val is: e</div> <div>index is: 1</div> <div>key is: 2</div> <div>val is: l</div> <div>index is: 2</div> <div>key is: 3</div> <div>val is: l</div> <div>index is: 3</div> <div>key is: 4</div> <div>val is: o</div> <div>index is: 4</div>

###③ 条件语句(condition)

  1. 模板中的代码(code in template): {%if $a%}
    this is a:{%$a%}
    {%else%}
    there is no a
    {%/if%}

  2. 调用:
    .....
    var tpl_fn = sm.compile(data, {varnames: ['a']});
    var out = tpl_fn('aval');
    console.log('has a:', out);
    var out = tpl_fn();
    console.log('no a:', out);
    .....

  3. 输出:
    has a: this is a:aval
    no a: there is no a

###④ 赋值(interpolate)

  1. 模板(interpolate.tpl):
    {%$b = 'test'%}
    b is :{%$b%}

{%$a = $b%}
a is :{%$a%}

{%$a=$c%}
new a is: {%$a%}
  1. 调用:
    .....
    var tpl_fn = sm.compile(data, {varnames: ['c']});
    var out = tpl_fn('cval');
    console.log(out);
    .....
  2. 输出:
    b is :test a is :test new a is: cval

###⑤ 多个参数(multiple parameters)
smartyMonkey支持传入多个参数,只要compile的时候,指定第二个参数即可:

  1. 模板:
    a is {%$a%}
    b is {%$b%}
    c is {%$c%}

2.调用:
.....
var tpl_fn = sm.compile(data, {varnames: ['a', 'b', 'c']});
var out = tpl_fn('aval', [1,2,3,4], 99);
console.log(out);
.....
3. 输出:
a is avalb is 1,2,3,4c is 99

###⑥ 过滤器(filter)
可以在模板中增加过滤器与过滤器所对应的函数,或语句。内置解析过滤器的只有一个count,被解析为js的.length

  1. 模板:
    a's length is: {%$a|count%} 2.调用:
    .....
    var tpl_fn = sm.compile(data, {varnames: ['a']});
    var out = tpl_fn('aval');
    console.log(out);
    .....
  2. 输出:
    a's length is: 4

注:我们可以通过扩展filter,来增加模板的功能
例:

  1. 模板:
    {%$a|encodeURIComponent%}
    2.调用:
    var sm = smartyMonkey.create({
     filterMap: {
      encodeURIComponent: function (code) {
       return 'encodeURIComponent(a)';
      }
     }
    });
  2. 输出:
    http%3A%2F%2Fwww.baidu.com%2Fs%3Fwd%3DsmartyMonkey

扩展(extend):

smartyMonkey支持扩展语法与处理器,也可以覆盖默认的语法和处理器。

我们通过在create的时候添加regxs与execFns,来增加/替换 替换规则与替换函数。可以达到对语法的扩充。

例:
var smartyMonkey = require('../../src/smartyMonkey');
var fs = require('fs');
fs.readFile(
 './extend.tpl',
 utf-8',
 function (err, data) {
  var sm = smartyMonkey.create({
   regxs: {
    smComments: /{%*[\s\S]*?*%}/g
   },
   execFns: {
    smComments: function () {
     return '-----注释替换-----';
    }
   }
  });
  var tpl_fn = sm.compile(data, {varnames: ['loop1', 'a']});
  var out = tpl_fn(['h', 'e', 'l', 'l', 'o'], '19');
  console.log(out);
 }
);

输入(extend.tpl): {%test test%}

输出: -----注释替换-----

如有任何问题,请及时联系 if you has any question please contact with me