734 lines
25 KiB
JavaScript
734 lines
25 KiB
JavaScript
'use strict';
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/*@
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Ox.api <f> Turns an array into a list API
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`Ox.api` takes an array and returns a function that allows you to run
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complex queries against it. See the examples below for details.
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items <[o]> An array of objects (key/value stores)
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options <o> API Options
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cache <b|false> If true, cache results
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enums <o> Enumerables, for example `{size: ['S', 'M', 'L']}`
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geo <b|false> If true, return combined area with totals
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sort <[o]|[s]> Default sort, for example `['+name', '-age']`
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sums <[s]> List of keys to be included in totals
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unique <s|'id'> The name of the unique key
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(items, options) -> <f> List API
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(options) -> <o> Results
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(options, callback) -> <o> Results
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area <o> Combined area
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Present if `keys` was undefined and the `geo` option was set
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east <n> Longitude
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north <n> Latitude
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south <n> Latitude
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west <n> Longitude
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items <n|[o]> Number of items or array of items
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Present if `positions` was not passed. Number if `keys` was
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undefined, otherwise array
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positions <o> Position (value) for each id (key)
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Present if `positions` was passed
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* <n> Sum of the values of any key specified in `sums`
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Present if `keys` was undefined
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options <o> Request options
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keys <[s]> Array of keys to be returned, or empty array for all keys
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Leaving `keys` undefined returns totals, not items
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positions <[s]> Array of ids
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Passing `positions` returns positions, not items
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query <o> Query object
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conditions <[o]> Array of condition objects and/or query objects
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Passing a query object instead of a condition object inserts
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a subcondition
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key <s> Key
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operator <s> Operator, like `'='` or `'!='`
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Can be `'='` (contains) `'=='` (is), `'^'` (starts
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with), `'$'` (ends with), `'<'`, `'<='`, `'>'`, `'>='`,
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optionally prefixed with `'!'` (not)
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value <*> Value
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operator <s> `'&'` or `'|'`
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range <[n]> Range of results, like `[100, 200]`
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sort <[s]> Array of sort strings, like `['+name', '-age']`
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callback <f> Callback function
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results <o> Results
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<script>
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Ox.test.api = Ox.api([
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{id: 'foo', n: 2},
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{id: 'bar', n: 2},
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{id: 'baz', n: 1}
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], {
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sums: ['n']
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});
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Ox.test.apiResults = {
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0: Ox.test.api(),
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1: Ox.test.api({
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keys: []
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}),
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2: Ox.test.api({
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keys: ['id'],
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sort: ['-n', '+id']
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}),
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3: Ox.test.api({
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keys: [],
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query: {
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conditions: [
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{key: 'id', operator: '!^', value: 'f'},
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{key: 'n', operator: '>', value: 1}
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],
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operator: '&'
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}
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}),
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4: Ox.test.api({
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keys: [],
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query: {
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conditions: [
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{key: 'id', operator: '=', value: 'O'},
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{key: 'n', operator: '=', value: [1, 2]}
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],
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operator: '|'
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},
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sort: ['+id']
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}),
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5: Ox.test.api({
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keys: [],
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query: {
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conditions: [
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{key: 'id', operator: '=', value: 'f'},
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{
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conditions: [
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{key: 'id', operator: '=', value: 'a'},
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{key: 'id', operator: '=', value: 'z'}
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],
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operator: '&'
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}
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],
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operator: '|'
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},
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sort: ['+id']
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}),
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6: Ox.test.api({
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keys: [],
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range: [1, 2],
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sort: ['+id']
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}),
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7: Ox.test.api({
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positions: ['foo', 'bar'],
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sort: ['+id']
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})
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};
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Ox.test.api = Ox.api([
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{i: 0, size: 'S'},
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{i: 1, size: 'M'},
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{i: 2, size: 'L'}
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], {
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enums: {size: ['S', 'M', 'L']},
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unique: 'i'
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});
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Ox.test.apiResults[8] = Ox.test.api({
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keys: ['size'],
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query: {
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conditions: [{key: 'size', operator: '>=', value: 'M'}],
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operator: '&'
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},
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sort: [{key: 'size', operator: '-'}]
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});
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</script>
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> Ox.test.apiResults[0].data
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{items: 3, n: 5}
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> Ox.test.apiResults[1].data
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{items: [{id: 'foo', n: 2}, {id: 'bar', n: 2}, {id: 'baz', n: 1}]}
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> Ox.test.apiResults[2].data
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{items: [{id: 'bar'}, {id: 'foo'}, {id: 'baz'}]}
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> Ox.test.apiResults[3].data
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{items: [{id: 'bar', n: 2}]}
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> Ox.test.apiResults[4].data
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{items: [{id: 'baz', n: 1}, {id: 'foo', n: 2}]}
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> Ox.test.apiResults[5].data
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{items: [{id: 'baz', n: 1}, {id: 'foo', n: 2}]}
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> Ox.test.apiResults[6].data
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{items: [{id: 'baz', n: 1}]}
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> Ox.test.apiResults[7].data
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{positions: {foo: 2, bar: 0}}
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> Ox.test.apiResults[8].data
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{items: [{i: 2, size: 'L'}, {i: 1, size: 'M'}]}
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@*/
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Ox.api = function(items, options) {
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var api = {
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cache: options.cache,
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enums: options.enums ? parseEnums(options.enums) : {},
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geo: options.geo,
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sort: options.sort || [],
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sums: options.sums || [],
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unique: options.unique || 'id'
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},
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fn = function(options, callback) {
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var data,
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result = {data: {}, status: {code: 200, text: 'ok'}},
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sort = {};
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options = options || {};
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if (options.query) {
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// find
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options.query.conditions = parseConditions(options.query.conditions);
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result.data.items = items.filter(function(item) {
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return testQuery(item, options.query);
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});
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} else {
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result.data.items = Ox.clone(items);
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}
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if (options.sort && result.data.items.length > 1) {
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// sort
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options.sort = parseSort(options.sort.concat(api.sort));
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options.sort.forEach(function(v) {
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var key = v.key;
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if (api.enums[key]) {
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sort[key] = function(value) {
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return api.enums[key].indexOf(value.toLowerCase());
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};
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} /*else if (Ox.isArray(items[0][key])) {
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sort[key] = function(value) {
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return value.join(', ');
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};
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}*/
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});
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result.data.items = Ox.sortBy(result.data.items, options.sort, sort);
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}
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if (options.positions) {
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// return positions
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data = {positions: {}};
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options.positions.forEach(function(id) {
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data.positions[id] = Ox.indexOf(result.data.items, function(item) {
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return item[api.unique] == id;
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});
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});
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result.data = data;
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} else if (!options.keys) {
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// return totals
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data = {};
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api.sums.forEach(function(key) {
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data[key] = Ox.sum(result.data.items.map(function(item) {
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return item[key];
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}));
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})
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data.items = result.data.items.length;
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if (api.geo) {
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/*
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fixme: slow, disabled
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data.area = Ox.joinAreas(result.data.items.map(function(item) {
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return {
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sw: {lat: item.south, lng: item.west},
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ne: {lat: item.north, lng: item.east}
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};
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}));
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data.area = {
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south: data.area.sw.lat,
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west: data.area.sw.lng,
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north: data.area.ne.lat,
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east: data.area.ne.lng
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};
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*/
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data.area = {
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south: Ox.MIN_LATITUDE,
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west: -180,
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north: Ox.MAX_LATITUDE,
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east: 180
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}
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}
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result.data = data;
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} else {
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// return items
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if (!Ox.isEmpty(options.keys)) {
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// filter keys
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if (options.keys.indexOf(api.unique) == -1) {
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options.keys.push(api.unique);
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}
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result.data.items = result.data.items.map(function(item) {
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var ret = {};
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options.keys.forEach(function(key) {
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ret[key] = item[key];
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});
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return ret;
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});
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}
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if (options.range) {
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// apply range
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result.data.items = result.data.items.slice(
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options.range[0], options.range[1]
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);
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}
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}
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callback && callback(result);
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return result;
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};
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function parseEnums(enums) {
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// make enumerable strings lowercase
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return Ox.map(enums, function(values) {
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return values.map(function(value) {
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return value.toLowerCase();
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});
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});
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}
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function parseConditions(conditions) {
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// make string values lowercase,
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// and replace enumerable strings used with the
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// <, !<, <=, !<=, >, !>, >= or !>= operator
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// with their index
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return conditions.map(function(condition) {
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var key = condition.key,
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operator = condition.operator,
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values = Ox.makeArray(condition.value);
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if (condition.conditions) {
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condition.conditions = parseConditions(condition.conditions);
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} else {
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values = values.map(function(value) {
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if (Ox.isString(value)) {
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value = value.toLowerCase();
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}
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if (api.enums[key] && (
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operator.indexOf('<') > -1
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|| operator.indexOf('>') > -1
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)) {
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value = api.enums[key].indexOf(value);
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}
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return value;
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});
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condition.value = Ox.isArray(condition.value)
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? values : values[0];
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}
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return condition;
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});
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}
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function parseSort(sort) {
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// translate 'foo' to {key: 'foo', operator: '+'}
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return sort.map(function(sort) {
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return Ox.isString(sort) ? {
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key: sort.replace(/^[\+\-]/, ''),
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operator: sort[0] == '-' ? '-' : '+'
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} : sort;
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});
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}
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function testCondition(item, condition) {
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var key = condition.key,
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operator = condition.operator.replace('!', ''),
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value = condition.value,
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not = condition.operator[0] == '!',
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itemValue = item[key],
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test = {
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'=': function(a, b) {
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return Ox.isArray(b) ? a >= b[0] && a < b[1]
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: Ox.isString(a) ? a.indexOf(b) > -1
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: a === b;
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},
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'==': function(a, b) { return a === b; },
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'<': function(a, b) { return a < b; },
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'<=': function(a, b) { return a <= b; },
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'>': function(a, b) { return a > b; },
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'>=': function(a, b) { return a >= b; },
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'^': function(a, b) { return Ox.startsWith(a, b); },
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'$': function(a, b) { return Ox.endsWith(a, b); }
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};
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if (Ox.isString(itemValue)) {
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itemValue = itemValue.toLowerCase();
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}
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if (api.enums[key] && (
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operator.indexOf('<') > -1
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|| operator.indexOf('>') > -1
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)) {
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itemValue = api.enums[key].indexOf(itemValue);
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}
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return test[operator](itemValue, value) == !not;
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}
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function testQuery(item, query) {
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var match = true;
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Ox.forEach(query.conditions, function(condition) {
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if (condition.conditions) {
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match = testQuery(item, condition);
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} else {
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match = testCondition(item, condition)
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}
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if (
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(query.operator == '&' && !match)
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|| (query.operator == '|' && match)
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) {
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Ox.Break();
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}
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});
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return match;
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}
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return api.cache ? Ox.cache(fn, {async: true}) : fn;
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};
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/*@
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Ox.compact <f> Removes `null` or `undefined` values from an array
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(array) -> <a> Array without `null` or `undefined` values
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> Ox.compact([null,,1,,2,,3])
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[1, 2, 3]
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@*/
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Ox.compact = function(array) {
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return array.filter(function(value) {
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return !Ox.isNull(value) && !Ox.isUndefined(value);
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});
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};
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/*@
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Ox.find <f> Returns array elements that match a string
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Returns an array of case-insensitive matches: exact match first, then
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leading matches, then other matches
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(array, query[, leading]) -> Array of matches
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array <[s]> Array of strings
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query <s> Query string
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leading <b> If true, returns leading matches only
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> Ox.find(['Bar', 'Barfoo', 'Foo', 'Foobar'], 'foo')
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['Foo', 'Foobar', 'Barfoo']
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> Ox.find(['Bar', 'Barfoo', 'Foo', 'Foobar'], 'foo', true)
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['Foo', 'Foobar']
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@*/
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Ox.find = function(array, string, leading) {
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var matches = [[], []];
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string = string.toLowerCase();
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array.forEach(function(value) {
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var lowerCase = value.toLowerCase(),
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index = lowerCase.indexOf(string);
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index > -1 && matches[index == 0 ? 0 : 1][
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lowerCase == string ? 'unshift' : 'push'
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](value);
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})
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return leading ? matches[0] : matches[0].concat(matches[1]);
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};
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/*@
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Ox.flatten <f> Flattens an array
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(array) -> <a> Flattened array
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> Ox.flatten([1, [2, [3], 2], 1])
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[1, 2, 3, 2, 1]
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@*/
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Ox.flatten = function(array) {
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var ret = [];
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array.forEach(function(value) {
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if (Ox.isArray(value)) {
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Ox.flatten(value).forEach(function(value) {
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ret.push(value);
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});
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} else {
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ret.push(value);
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}
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});
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return ret;
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};
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/*@
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Ox.getIndexById <f> Returns the first array index of an object with a given id
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(array, id) -> <n> Index (or `-1`)
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array <[o]> Array of objects with a unique `'id'` property
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id <s> Id
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> Ox.getIndexById([{id: 'foo', str: 'Foo'}, {id: 'bar', str: 'Bar'}], 'bar')
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1
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> Ox.getIndexById([{id: 'foo', str: 'Foo'}, {id: 'bar', str: 'Bar'}], 'baz')
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-1
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@*/
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Ox.getIndexById = function(array, id) {
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return Ox.indexOf(array, function(obj) {
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return obj.id === id;
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});
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};
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/*@
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Ox.getObjectById <f> Returns the first object in an array with a given id
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(array, id) -> <o> Object (or `null`)
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array <[o]> Array of objects with a unique `'id'` property
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id <s> Id
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> Ox.getObjectById([{id: 'foo', str: 'Foo'}, {id: 'bar', str: 'Bar'}], 'bar')
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{id: "bar", str: "Bar"}
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> Ox.getObjectById([{id: 'foo', str: 'Foo'}, {id: 'bar', str: 'Bar'}], 'baz')
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null
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@*/
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Ox.getObjectById = function(array, id) {
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var index = Ox.getIndexById(array, id);
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return index > -1 ? array[index] : null;
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};
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/*
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Ox.indexOf = function(arr) {
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// indexOf for primitives, test for function, deep equal for others
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};
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*/
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/*@
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Ox.last <f> Gets or sets the last element of an array
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Unlike `arrayWithALongName[arrayWithALongName.length - 1]`,
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`Ox.last(arrayWithALongName)` is short.
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<script>
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Ox.test.array = [1, 2, 3];
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</script>
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> Ox.last(Ox.test.array)
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3
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> Ox.last(Ox.test.array, 4)
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[1, 2, 4]
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> Ox.test.array
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[1, 2, 4]
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> Ox.last('123')
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'3'
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@*/
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Ox.last = function(array, value) {
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var ret;
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if (arguments.length == 1) {
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ret = array[array.length - 1];
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} else {
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array[array.length - 1] = value;
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ret = array;
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}
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return ret;
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};
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/*@
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Ox.makeArray <f> Wraps any non-array in an array.
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(value) -> <a> Array
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value <*> Any value
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> Ox.makeArray('foo')
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['foo']
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> Ox.makeArray(['foo'])
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['foo']
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@*/
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Ox.makeArray = function(value) {
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var ret, type = Ox.typeOf(value);
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if (type == 'arguments') {
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ret = Ox.toArray(value);
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} else if (type == 'array') {
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ret = value;
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} else {
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ret = [value];
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}
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return ret;
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};
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/*@
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Ox.range <f> Python-style range
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(stop) -> <[n]> range
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Returns an array of integers from `0` (inclusive) to `stop` (exclusive).
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(start, stop) -> <[n]> range
|
|
Returns an array of integers from `start` (inclusive) to `stop`
|
|
(exclusive).
|
|
(start, stop, step) -> <[n]> range
|
|
Returns an array of numbers from `start` (inclusive) to `stop`
|
|
(exclusive), incrementing by `step`.
|
|
start <n> Start value
|
|
stop <n> Stop value
|
|
step <n> Step value
|
|
> Ox.range(3)
|
|
[0, 1, 2]
|
|
> Ox.range(1, 4)
|
|
[1, 2, 3]
|
|
> Ox.range(3, 0)
|
|
[3, 2, 1]
|
|
> Ox.range(1, 2, 0.5)
|
|
[1, 1.5]
|
|
> Ox.range(-1, -2, -0.5)
|
|
[-1, -1.5]
|
|
@*/
|
|
Ox.range = function() {
|
|
var array = [];
|
|
Ox.loop.apply(null, Ox.toArray(arguments).concat(function(index) {
|
|
array.push(index);
|
|
}));
|
|
return array;
|
|
};
|
|
|
|
(function() {
|
|
|
|
function getSortValues(array, map) {
|
|
var mappedArray = map ? array.map(map) : array,
|
|
length, matches = [], sort = {};
|
|
// find numbers
|
|
array.forEach(function(value, i) {
|
|
var match, mappedValue = mappedArray[i];
|
|
if (Ox.isString(mappedValue)) {
|
|
match = mappedValue.match(/\d+/g);
|
|
if (match) {
|
|
matches = matches.concat(match);
|
|
}
|
|
}
|
|
});
|
|
// get length of longest number
|
|
length = Ox.max(Ox.map(matches, function(value) {
|
|
return value.length;
|
|
}));
|
|
// make lowercase, remove leading non-word characters,
|
|
// pad numbers and move leading articles to the end
|
|
array.forEach(function(value, i) {
|
|
var mappedValue = mappedArray[i];
|
|
if (
|
|
Ox.isEmpty(mappedValue)
|
|
|| Ox.isNull(mappedValue)
|
|
|| Ox.isUndefined(mappedValue)
|
|
) {
|
|
sort[value] = null;
|
|
} else if (Ox.isString(mappedValue)) {
|
|
sort[value] = mappedValue.toLowerCase()
|
|
.replace(/^\W+/, '')
|
|
.replace(/\d+/g, function(match) {
|
|
return Ox.pad(parseInt(match), length);
|
|
});
|
|
Ox.forEach(['a', 'an', 'the'], function(article) {
|
|
var length;
|
|
if (new RegExp('^' + article + ' ').test(sort[value])) {
|
|
length = article.length;
|
|
sort[value] = sort[value].slice(length + 1) + ', '
|
|
+ sort[value].slice(0, length);
|
|
Ox.Break();
|
|
}
|
|
});
|
|
} else {
|
|
sort[value] = mappedValue;
|
|
}
|
|
});
|
|
return sort;
|
|
}
|
|
|
|
/*@
|
|
Ox.sort <f> Sorts an array, handling articles and digits, ignoring capitalization
|
|
(array) -> <a> Sorted array
|
|
(array, map) -> <a> Sorted array
|
|
array <a> Array
|
|
map <f|u> Optional map function that returns the value for the array element
|
|
> Ox.sort(['"z"', '10', '9', 'B', 'a'])
|
|
['9', '10', 'a', 'B', '"z"']
|
|
> Ox.sort([{id: 0, name: '80 Days'}, {id: 1, name: '8 Women'}], function(v) {return v.name})
|
|
[{id: 1, name: '8 Women'}, {id: 0, name: '80 Days'}]
|
|
> Ox.sort(['In 80 Days Around the World', 'In 9 Minutes Around the World'])
|
|
['In 9 Minutes Around the World', 'In 80 Days Around the World']
|
|
> Ox.sort(['Man', 'A Plan', 'The Canal'])
|
|
['The Canal', 'Man', 'A Plan']
|
|
@*/
|
|
Ox.sort = function(array, map) {
|
|
var values = getSortValues(map ? array.map(map) : array);
|
|
return array.sort(function(a, b) {
|
|
a = map ? map(a) : a;
|
|
b = map ? map(b) : b;
|
|
var ret = 0;
|
|
if (values[a] < values[b]) {
|
|
ret = -1;
|
|
} else if (values[a] > values[b]) {
|
|
ret = 1;
|
|
}
|
|
return ret;
|
|
});
|
|
};
|
|
|
|
/*@
|
|
Ox.sortBy <f> Sorts an array of objects by given properties
|
|
(array, by[, map]) -> <a> Sorted array
|
|
array <[o]> Array of objects
|
|
by <[s]> Array of object keys (asc: 'foo' or '+foo', desc: '-foo')
|
|
map <o> Optional map functions, per key, that return the sort value
|
|
> Ox.sortBy([{x: 1, y: 1}, {x: 1, y: 2}, {x: 2, y: 2}], ['+x', '-y'])
|
|
[{x: 1, y: 2}, {x: 1, y: 1}, {x: 2, y: 2}]
|
|
> Ox.sortBy([{id: 0, name: '80 Days'}, {id: 1, name: '8 Women'}], ['name'])
|
|
[{id: 1, name: '8 Women'}, {id: 0, name: '80 Days'}]
|
|
@*/
|
|
Ox.sortBy = function(array, by, map) {
|
|
var values = {};
|
|
by = Ox.makeArray(by);
|
|
map = map || {};
|
|
by = by.map(function(value) {
|
|
return Ox.isString(value) ? {
|
|
key: value.replace(/^[\+\-]/, ''),
|
|
operator: value[0] == '-' ? '-' : '+'
|
|
} : value;
|
|
});
|
|
by.map(function(value) {
|
|
return value.key;
|
|
}).forEach(function(key) {
|
|
values[key] = getSortValues(array.map(function(value) {
|
|
return value[key];
|
|
}), map[key]);
|
|
});
|
|
return array.sort(function(a, b) {
|
|
var aValue, bValue, index = 0, key, ret = 0;
|
|
while (ret == 0 && index < by.length) {
|
|
key = by[index].key;
|
|
aValue = values[key][a[key]];
|
|
bValue = values[key][b[key]];
|
|
if ((aValue === null) != (bValue === null)) {
|
|
ret = aValue === null ? 1 : -1;
|
|
} else if (aValue < bValue) {
|
|
ret = by[index].operator == '+' ? -1 : 1;
|
|
} else if (aValue > bValue) {
|
|
ret = by[index].operator == '+' ? 1 : -1;
|
|
} else {
|
|
index++;
|
|
}
|
|
}
|
|
return ret;
|
|
});
|
|
};
|
|
|
|
}());
|
|
|
|
/*@
|
|
Ox.toArray <f> Takes an array-like object and returns a true array
|
|
(value) -> <a> True array
|
|
value <*> Array-like object
|
|
> (function() { return Ox.toArray(arguments); }('foo', 'bar'))
|
|
['foo', 'bar']
|
|
> Ox.toArray('foo')
|
|
['f', 'o', 'o']
|
|
> Ox.toArray({0: 'f', 1: 'o', 2: 'o', length: 3})
|
|
['f', 'o', 'o']
|
|
@*/
|
|
Ox.toArray = function(collection) {
|
|
return Ox.slice(collection);
|
|
};
|
|
try {
|
|
Array.prototype.slice.call(document.getElementsByTagName('a'));
|
|
} catch (error) {
|
|
// Handle IE NodeLists
|
|
Ox.toArray = function(collection) {
|
|
var i, length, ret = [];
|
|
try {
|
|
ret = Ox.slice(collection);
|
|
} catch (error) {
|
|
length = collection.length;
|
|
for (i = 0; i < length; i++) {
|
|
ret[i] = collection[i];
|
|
}
|
|
}
|
|
return ret;
|
|
};
|
|
}
|
|
|
|
/*@
|
|
Ox.unique <f> Removes duplicate values from an array
|
|
(array) -> <a> Array without duplicate values
|
|
> Ox.unique([1, 2, 3, 2, 1])
|
|
[1, 2, 3]
|
|
> Ox.unique([NaN, NaN])
|
|
[]
|
|
@*/
|
|
Ox.unique = function(array) {
|
|
return Ox.filter(array, function(value, index) {
|
|
return array.indexOf(value) == index;
|
|
});
|
|
};
|
|
|
|
/*@
|
|
Ox.zip <f> Zips an array of arrays
|
|
> Ox.zip([[0, 1], [2, 3], [4, 5]])
|
|
[[0, 2, 4], [1, 3, 5]]
|
|
> Ox.zip([0, 1, 2], [3, 4, 5])
|
|
[[0, 3], [1, 4], [2, 5]]
|
|
@*/
|
|
Ox.zip = function() {
|
|
var args = arguments.length == 1 ? arguments[0] : Ox.toArray(arguments),
|
|
array = [];
|
|
args[0].forEach(function(value, index) {
|
|
array[index] = [];
|
|
args.forEach(function(value) {
|
|
array[index].push(value[index]);
|
|
});
|
|
});
|
|
return array;
|
|
};
|