Merge branch 'master' of git://github.com/tmm1/screw-unit into tmm1/m…

…aster

lib/jquery.print.js

@@ -1,24 +1,126 @@
 (function($) {
-  $.print = function(obj) {
-    if (obj instanceof Function) {
-      return obj.toString().match(/^([^\{]*) {/)[1];
-    } else if(obj instanceof Array) {
-      var result = [];
-      for (var i = 0; i < obj.length; i++) {
-        result.push($.print(obj[i]));
-      }
-      return "[" + result.join(", ") + "]";
-    } else if(obj instanceof HTMLElement) {
-      return "<" + obj.tagName + " " + (obj.className != "" ? "class='" + obj.className + "'" : "") +
-        (obj.id != "" ? "id='" + obj.id + "'" : "") + ">";
-    } else if(obj instanceof Object) {
-      var result = [];
-      for (var k in obj) {
-        result.push(k + ": " + $.print(obj[k]))
+
+  // helper functions
+
+  function print_array(obj, opts){
+    opts.maxString = 25
+    var max = obj.length > opts.maxArray ? opts.maxArray : obj.length
+
+    var result = [];
+    for (var i = 0; i < max; i++) {
+      result.push($.print(obj[i], opts));
+    }
+
+    if (obj.length > max)
+      result.push('... ' + (obj.length - max) + ' more')
+
+    if (result.length == 0) return "[]"
+    return "[ " + result.join(", ") + " ]"
+  }
+
+  function print_element(obj){
+    return "<" + obj.tagName.toLowerCase() +
+                 (obj.className != "" ? " class='" + obj.className + "'" : "") +
+                 (obj.id != "" ? " id='" + obj.id + "'" : "") +
+           ">"
+  }
+
+  function print_object(obj, opts){
+    opts.maxString = 25
+    if (!opts.seen) opts.seen = []
+
+    var result = []
+    for (var k in obj) {
+      if (opts.seen.indexOf(obj[k]) == -1) {
+        opts.seen.push(obj[k])
+        result.push(k + ": " + $.print(obj[k], opts))
       }
-      return "{" + result.join(", ") + "}" 
-    } else {
-      return obj.toString().replace(/\n\s*/g, "");
     }
+
+    if (result.length == 0) return "{}"
+    return "{ " + result.join(", ") + " }"
+  }
+
+  function print_jquery(obj){
+    var result = []
+    obj.each(function(){ result.push(this) })
+
+    return "jQuery(length="+obj.length+")" + $.print(result)
+  }
+
+  function print_string(value, opts){
+    // adapted from json2.js
+    var m = {    // table of character substitutions
+      '\b': '\\b',
+      '\t': '\\t',
+      '\n': '\\n',
+      '\f': '\\f',
+      '\r': '\\r',
+      '"' : '\\"',
+      '\\': '\\\\'
+    }
+
+    var r = /["\\\x00-\x1f\x7f-\x9f]/g
+
+    // If the string contains no control characters, no quote characters, and no
+    // backslash characters, then we can safely slap some quotes around it.
+    // Otherwise we must also replace the offending characters with safe sequences.
+
+    var str = r.test(value) ?
+        '"' + value.replace(r, function (a) {
+            var c = m[a];
+            if (c) {
+                return c;
+            }
+            c = a.charCodeAt();
+            return '\\u00' + Math.floor(c / 16).toString(16) +
+                                       (c % 16).toString(16);
+        }) + '"' :
+        '"' + value + '"';
+
+
+    if (opts.maxString && str.length > opts.maxString)
+      return str.slice(0, opts.maxString) + '..."'
+    else
+      return str
+  }
+
+  $.print = function(obj, options) {
+    var opts = $.extend({}, $.print.options, options || {})
+
+    if (typeof obj == 'undefined')
+      return "undefined"
+
+    else if (typeof obj == 'boolean')
+      return obj.toString()
+
+    else if (!obj)
+      return "null"
+
+    else if (typeof obj == 'string')
+      return print_string(obj, opts)
+
+    else if ($.isFunction(obj))
+      return obj.toString().match(/^([^\{]*)\s{/)[1]
+
+    else if (obj instanceof Array)
+      return print_array(obj, opts)
+
+    else if (obj instanceof HTMLElement)
+      return print_element(obj)
+
+    else if (obj instanceof jQuery)
+      return print_jquery(obj)
+
+    else if (obj instanceof Object)
+      return print_object(obj, opts)
+
+    else
+      return obj.toString().replace(/\n\s*/g, '')
+  }
+
+  $.print.options = {
+    maxArray: 6,
+    maxString: 0
   }
 })(jQuery);