filterjs - npm Package Compare versions

Comparing version 0.1.0 to 0.1.2

filter.js

@@ -8,15 +8,158 @@ /**
     'use strict';
-    var VERSION = "0.1.0",
+    var VERSION = "0.1.2",
         globalScope = typeof global !== 'undefined' ? global : this,
-        oldGlobalMoment;
+        oldGlobalMoment,
+        funcNameReg = /^[_a-zA-Z]\w*/,
+        g_templates = {},
+        g_filters = {},
+        CONFIG = {
+            cache: true         //是否缓存模板编译后的函数
+        };
+
+    /*******************************************************
+     private functions
+     *******************************************************/
+    function register(context, name, func) {
+        var a = arguments;
+
+        if (typeof name === "string") {
+            if (!funcNameReg.test(name)) {
+                throw '"' + name + '" is not a valid filter name.';
+            }
+            if (typeof func !== "function")
+                throw "need a function param.";
+            context[name] = func;
+        }
+    }
+
+    function extend(a, b) {
+        if (!b || !a)
+            return a;
+
+        for (var i in b) {
+            if (b.hasOwnProperty(i)) {
+                a[i] = b[i];
+            }
+        }
+
+        if (b.hasOwnProperty("toString")) {
+            a.toString = b.toString;
+        }
+
+        if (b.hasOwnProperty("valueOf")) {
+            a.valueOf = b.valueOf;
+        }
+
+        return a;
+    }
+
+    function compile(str, config) {
+        if (g_templates[str]) {
+            return g_templates[str];
+        }
+        var sreg = /{{#([^#]+)#}}/g;//语句
+        var vreg = /{{([^0-9][^#]*)}}/g;//变量
+        str = str.replace(/[\r\t\n]/g, ' ');
+        str = str.replace(/"/g, "'");//双引号变单引号，原因：构造的函数里，字符串通过双引号。所以里面的字符串必须用单引号。
+        str = str.replace(vreg,function (s, w) {
+            return '"+(' + parseFilter(w) + ');results+="';
+
+        }).replace(sreg, function (s, w) {
+                s = s.replace(/^{{#/g, '').replace(/#}}$/g, '');
+                return '";' + s.replace(/\\/g, '') + '; results+="';
+
+            });
+        str = '"use strict";try{var results = "' + str + '";return results;}catch(err){return "error:"+err.stack;}';
+        console.log(str);
+
+        try {
+            var func = new Function("data", "filters", str);
+            g_templates[str] = func;
+            return func;
+        }
+        catch (err) {
+            var msg = "error:" + err.stack;
+            var code = "return '" + msg + "'";
+            return new Function("filters", code);
+        }
+    }
+
+    function parseFilter(str) {
+        str = str || "";
+        var index = str.lastIndexOf("|");
+        if (index < 0) {
+            return str;
+        }
+        var f1 = str.substr(0, index);
+        var f2 = str.substr(index + 1);
+        var param = parseFilter(f1);
+        var func = f2.split(":");
+        var f = "filters[\"" + func[0].trim() + "\"]";
+        if (func.length > 1)
+            return f + '(' + param + ',' + func[1].trim() + ')';
+        return f + '(' + param + ')';
+
+    }
+
+    function getFilters(filters) {
+        return  extend(filters, g_filters);
+    }
+
     var Filterjs = function (tpl, config) {
+        if (this instanceof Filterjs) {
+            this._tpl = tpl;
+            this._config = extend(CONFIG, config);
+            this.filters = {};
+        } else {
+            return new Filterjs(tpl, config);
+        }
+    }
+    Filterjs.version = VERSION;
 
-    }
-    Filterjs.version=VERSION;
+    Filterjs.register = function (name, func) {
+        register(g_filters, name, func);
+        return this;
+    };
     Filterjs.prototype = {
         render: function (data) {
-            return this.tpl;
+            var func = compile(this._tpl, this._config);
+            var result = func(data, getFilters(this.filters));
+            return result;
+        },
+        register: function (name, func) {
+            register(this.filters, name, func);
+            return this;
+        },
+        config: function (config) {
+            if (config == null) {
+                return this._config;
+            }
+            extend(this._config, config);
+            return this;
         }
+    }
+    /*******************************************************
+     filter functions
+     *******************************************************/
+    Filterjs.register("trim",function (value) {
+        return value.trim();
+    }).register('lower',function (value) {
+            if (typeof value === 'string') return value.toLowerCase();
+            return value;
 
-    }
+        }).register('upper', function (value) {
+            if (typeof value === 'string') return value.toUpperCase();
+            return value;
+        }).register('length', function (value,len) {
+            if (typeof value === 'string')
+            {
+                if (value.length > len)
+                    return value.substring(0, len) + '...';
+                return value;
+            }
+            return value;
+        });
+    /*******************************************************
+     module define & exports
+     *******************************************************/
     Filterjs.noConflict = function () {
@@ -23,0 +166,0 @@ globalScope.Filterjs = oldGlobalMoment;

package.json

@@ -9,5 +9,5 @@ {
     "author":"houyhea",
-    "version": "0.1.0",
+    "version": "0.1.2",
     "dependencies": {},
     "main": "filter.js"
 }

README.md

@@ -1,2 +0,2 @@
-#timespanjs
+#filterjs
 ##简介
@@ -3,0 +3,0 @@ 一款支持过滤器功能的轻量级模版引擎。

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Improved metrics

Total package byte prevSize

105830

increased by2991.73%

Number of package files

8

increased by33.33%

Lines of code

535

increased by1473.53%

Worsened metrics

Number of medium supply chain risk alerts

1

increased byInfinity%

No dependency changes