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