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Random article feature : start reading titles after a newLine. Fixes #69

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This commit is contained in:
mossroy 2014-03-06 17:48:39 +01:00
parent cec89f82b0
commit c5dd935f3d
2 changed files with 1040 additions and 1040 deletions
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17
www/js/lib/archive.js
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@ -42,9 +42,6 @@ define(function(require) {
// Size of chunks read in the dump files : 128 KB
var CHUNK_SIZE = 131072;
// The maximum number of titles that can have the same name after normalizing
// This is used by the algorithm that searches for a specific article by its name
var MAX_TITLES_WITH_SAME_NORMALIZED_NAME = 30;
// A rectangle representing all the earth globe
var GLOBE_RECTANGLE = new geometry.rect(-181, -90, 361, 181);
@ -367,12 +364,14 @@ define(function(require) {
var that = this;
var offset = Math.floor(Math.random() * this.titleFile.size);
jQuery.when().then(function() {
var iterator = new titleIterators.SequentialTitleIterator(that, offset);
// call advance twice because we are probably not at the beginning
// of a title
// TODO : we need to find a better way to reach the beginning of the title
// As it is now, the first advance() can fail on utf8 decoding
return iterator.advance().then(function() {
return util.readFileSlice(that.titleFile, offset,
offset + titleIterators.MAX_TITLE_LENGTH).then(function(byteArray) {
// Let's find the next newLine
var newLineIndex = 0;
while (newLineIndex < byteArray.length && byteArray[newLineIndex] !== 10) {
newLineIndex++;
}
var iterator = new titleIterators.SequentialTitleIterator(that, offset + newLineIndex + 1);
return iterator.advance();
});
}).then(callbackFunction, errorHandler);

3
www/js/lib/titleIterators.js
View File

@ -121,6 +121,7 @@ define(['utf8', 'title', 'util', 'jquery'], function(utf8, evopediaTitle, util,
*/
return {
SequentialTitleIterator : SequentialTitleIterator,
findPrefixOffset : findPrefixOffset
findPrefixOffset : findPrefixOffset,
MAX_TITLE_LENGTH : MAX_TITLE_LENGTH
};
});