1function mergeArrays() {
2  var arr = arguments[0] || [];
3  for (var i = 1; i < arguments.length; i++) {
4    arr = arr.concat(arguments[i]);
5  }
6  return arr;
7}
8
9var ALL_RESOURCES = mergeArrays(
10  ABOUT_RESOURCES,
11  DESIGN_RESOURCES,
12  DISTRIBUTE_RESOURCES,
13  GOOGLE_RESOURCES,
14  GUIDE_RESOURCES,
15  SAMPLES_RESOURCES,
16  TOOLS_RESOURCES,
17  TRAINING_RESOURCES,
18  WORK_RESOURCES,
19  YOUTUBE_RESOURCES,
20  BLOGGER_RESOURCES,
21  PREVIEW_RESOURCES
22);
23
24for (var i = 0; i < ALL_RESOURCES.length; i++) {
25  ALL_RESOURCES[i].index = i;
26}
27
28function mergeMaps() {
29  var allRes = {};
30  var offset = 0;
31
32  for (var i = 0; i < arguments.length; i++) {
33    var r = arguments[i];
34    for (var tag in r.map) {
35      allRes[tag] = allRes[tag] || [];
36      allRes[tag] = allRes[tag].concat(r.map[tag].map(function(i){ return ALL_RESOURCES[i + offset]; }));
37    }
38    offset += r.arr.length;
39  }
40
41  return allRes;
42}
43
44function setFromArray(arr) {
45  arr = arr || [];
46  var set = {};
47  for (var i = 0; i < arr.length; i++) {
48    set[arr[i]] = true;
49  }
50  return set;
51}
52
53function buildResourceLookupMap(resourceDict) {
54  var map = {};
55  for (var key in resourceDict) {
56    var dictForKey = {};
57    var srcArr = resourceDict[key];
58    for (var i = 0; i < srcArr.length; i++) {
59      dictForKey[srcArr[i].index] = true;
60    }
61    map[key] = dictForKey;
62  }
63  return map;
64}
65
66// Type lookups
67
68var ALL_RESOURCES_BY_TYPE = {
69  'about': ABOUT_RESOURCES,
70  'design': DESIGN_RESOURCES,
71  'distribute': DISTRIBUTE_RESOURCES,
72  'google': GOOGLE_RESOURCES,
73  'guide': GUIDE_RESOURCES,
74  'samples': SAMPLES_RESOURCES,
75  'tools': TOOLS_RESOURCES,
76  'training': TRAINING_RESOURCES,
77  'preview': PREVIEW_RESOURCES,
78  'work': WORK_RESOURCES,
79  'youtube': YOUTUBE_RESOURCES,
80  'blog': BLOGGER_RESOURCES
81};
82var IS_RESOURCE_OF_TYPE = buildResourceLookupMap(ALL_RESOURCES_BY_TYPE);
83
84// Tag lookups
85
86var ALL_RESOURCES_BY_TAG = mergeMaps(
87  {map:ABOUT_BY_TAG,arr:ABOUT_RESOURCES},
88  {map:DESIGN_BY_TAG,arr:DESIGN_RESOURCES},
89  {map:DISTRIBUTE_BY_TAG,arr:DISTRIBUTE_RESOURCES},
90  {map:GOOGLE_BY_TAG,arr:GOOGLE_RESOURCES},
91  {map:GUIDE_BY_TAG,arr:GUIDE_RESOURCES},
92  {map:SAMPLES_BY_TAG,arr:SAMPLES_RESOURCES},
93  {map:TOOLS_BY_TAG,arr:TOOLS_RESOURCES},
94  {map:TRAINING_BY_TAG,arr:TRAINING_RESOURCES},
95  {map:YOUTUBE_BY_TAG,arr:YOUTUBE_RESOURCES},
96  {map:BLOGGER_BY_TAG,arr:BLOGGER_RESOURCES}
97);
98var IS_RESOURCE_TAGGED = buildResourceLookupMap(ALL_RESOURCES_BY_TAG);
99
100// URL and language lookups
101
102var ALL_RESOURCES_BY_URL = {};
103var ALL_RESOURCES_BY_LANG = {};
104
105for (var i = 0; i < ALL_RESOURCES.length; i++) {
106  var res = ALL_RESOURCES[i];
107  var lang = res.lang;
108  if (lang) {
109    ALL_RESOURCES_BY_LANG[lang] = ALL_RESOURCES_BY_LANG[lang] || [];
110    ALL_RESOURCES_BY_LANG[lang].push(res);
111  }
112  var url = res.url;
113  if (url) {
114    ALL_RESOURCES_BY_URL[url] = res;
115  }
116}
117var IS_RESOURCE_IN_LANG = buildResourceLookupMap(ALL_RESOURCES_BY_LANG);
118