1 |
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2 | var object, self,
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3 | hasProp = {}.hasOwnProperty;
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4 |
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5 | object = require('utila').object;
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6 |
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7 | module.exports = self = {
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8 | sanitize: function(val) {
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9 | return self._toChildren(val);
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10 | },
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11 | _toChildren: function(val) {
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12 | var ref;
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13 | if (object.isBareObject(val)) {
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14 | return self._objectToChildren(val);
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15 | } else if (Array.isArray(val)) {
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16 | return self._arrayToChildren(val);
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17 | } else if (val === null || typeof val === 'undefined') {
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18 | return [];
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19 | } else if ((ref = typeof val) === 'string' || ref === 'number') {
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20 | return [String(val)];
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21 | } else {
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22 | throw Error("not a valid child node: `" + val);
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23 | }
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24 | },
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25 | _objectToChildren: function(o) {
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26 | var a, cur, key, val;
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27 | a = [];
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28 | for (key in o) {
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29 | if (!hasProp.call(o, key)) continue;
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30 | val = o[key];
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31 | cur = {};
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32 | cur[key] = self.sanitize(val);
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33 | a.push(cur);
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34 | }
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35 | return a;
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36 | },
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37 | _arrayToChildren: function(a) {
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38 | var i, len, ret, v;
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39 | ret = [];
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40 | for (i = 0, len = a.length; i < len; i++) {
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41 | v = a[i];
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42 | ret.push(self._toNode(v));
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43 | }
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44 | return ret;
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45 | },
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46 | _toNode: function(o) {
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47 | var key, keys, obj, ref;
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48 | if ((ref = typeof o) === 'string' || ref === 'number') {
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49 | return String(o);
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50 | } else if (object.isBareObject(o)) {
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51 | keys = Object.keys(o);
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52 | if (keys.length !== 1) {
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53 | throw Error("a node must only have one key as tag name");
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54 | }
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55 | key = keys[0];
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56 | obj = {};
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57 | obj[key] = self._toChildren(o[key]);
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58 | return obj;
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59 | } else {
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60 | throw Error("not a valid node: `" + o + "`");
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61 | }
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62 | }
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63 | };
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