kiwix/kiwix-js
1
0
Fork 0
mirror of https://github.com/kiwix/kiwix-js.git synced 2025-09-22 03:52:21 -04:00
Code Issues Packages Projects Releases Wiki Activity

Improve comments, and remove dead code

Browse Source
This commit is contained in:
mossroy 2012-12-25 19:32:39 +01:00
parent 59b3c9916e
commit c3c677a66f
2 changed files with 21 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
evopedia-html5/WebContent/evopedia.html
View File

@ -60,7 +60,6 @@ Length : <input type="text" id="length" value="8866" />
<div id="articleContent">&nbsp;</div>
<hr/>
<textarea id="rawArticleContent" cols="80" rows="20">&nbsp;</textarea>
<!--<pre id="rawArticleContent">&nbsp;</pre>-->
<script type="text/javascript" src="evopedia.js"></script>
</body>

35
evopedia-html5/WebContent/evopedia.js
View File

@ -22,12 +22,11 @@ License:
<http://www.gnu.org/licenses/>.
*/
var dataFiles=document.getElementById('dataFiles').files;
var titleFile=document.getElementById('titleFile').files[0];
var storage = navigator.getDeviceStorage('music');
//alert(storage);
if (!storage) {
//alert("no device storage available");
document.getElementById('openLocalFiles').style.visibility="visible";
@ -36,15 +35,11 @@ if (!storage) {
}
else {
var filerequest = storage.get('wikipedia_small_2010-08-14/wikipedia_00.dat');
//alert(filerequest);
filerequest.onsuccess = function() {
dataFiles[0] = filerequest.result;
//alert(dataFiles);
filerequest = storage.get('wikipedia_small_2010-08-14/titles.idx');
filerequest.onsuccess = function() {
titleFile = filerequest.result;
//alert(titleFile);
//readArticleFromHtmlForm(file);
};
filerequest.onerror = function() {
alert("error reading title file");
@ -55,6 +50,9 @@ else {
};
}
/**
* Set the Offsets HTML fields from the selected title
*/
function updateOffsetsFromTitle(selectValue) {
var offsets=selectValue.split(/\|/);
document.getElementById("filenumber").value=offsets[0];
@ -63,6 +61,9 @@ function updateOffsetsFromTitle(selectValue) {
document.getElementById("length").value=offsets[3];
}
/**
* Read an integer encoded in 4 bytes
*/
function readIntegerFrom4Bytes(byteArray,firstIndex) {
return byteArray[firstIndex] + byteArray[firstIndex+1]*256 + byteArray[firstIndex+2]*65536 + byteArray[firstIndex+3]*16777216;
}
@ -92,6 +93,9 @@ function utf8ByteArrayToString(bytes,startIndex,endIndex) {
return out.join('');
};
/**
* Read all the titles from the index file, and populate the dropdown list
*/
function readAllTitlesFromIndex(titleFile) {
if (titleFile) {
var reader = new FileReader();
@ -123,7 +127,8 @@ function readAllTitlesFromIndex(titleFile) {
blockoffset = readIntegerFrom4Bytes(byteArray,i+7);
length = readIntegerFrom4Bytes(byteArray,i+11);
var newLineIndex = i+15;
// Look for the index of NewLine
while (newLineIndex<byteArray.length && byteArray[newLineIndex]!=128) {
newLineIndex++;
}
@ -148,6 +153,9 @@ function readAllTitlesFromIndex(titleFile) {
}
}
/**
* Decompress and read an article in dump files
*/
function readArticleFromHtmlForm(dataFiles) {
if (dataFiles && dataFiles.length>0) {
var filenumber = document.getElementById('filenumber').value;
@ -155,6 +163,7 @@ function readArticleFromHtmlForm(dataFiles) {
var blockoffset = document.getElementById('blockoffset').value;
var length = document.getElementById('length').value;
var dataFile;
// Find the good dump file
for (var i=0; i<dataFiles.length; i++) {
var fileName = dataFiles[i].name;
var prefixedFileNumber = "";
@ -185,6 +194,9 @@ function readArticleFromHtmlForm(dataFiles) {
}
}
/**
* Read an article in a dump file, based on given offsets
*/
function readArticleFromOffset(dataFile, blockstart, blockoffset, length) {
var reader = new FileReader();
@ -194,15 +206,12 @@ function readArticleFromOffset(dataFile, blockstart, blockoffset, length) {
};
reader.onload = function(e) {
var compressedArticles = e.target.result;
//var htmlArticle = compressedArticles;
//alert(typeof compressedArticles);
//var htmlArticle = ArchUtils.bz2.decode(compressedArticles);
// TODO : should be improved by uncompressing the content chunk by chunk,
// until the length is reached, instead of uncompressing everything
var htmlArticles = bzip2.simple(bzip2.array(new Uint8Array(compressedArticles)));
// Start reading at offset, and keep 2*length bytes (maximum size in bytes for length characters)
// Start reading at offset, and keep length characters
var htmlArticle = htmlArticles.substring(blockoffset,blockoffset+length);
// Keep only length characters
htmlArticle = htmlArticle.substring(0,length);
// Decode UTF-8 encoding
@ -210,11 +219,9 @@ function readArticleFromOffset(dataFile, blockstart, blockoffset, length) {
document.getElementById('articleContent').innerHTML = htmlArticle;
// For testing purpose
//document.getElementById('rawArticleContent').innerHTML = htmlArticle.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
//document.getElementById('rawArticleContent').value = decodeURIComponent(escape(htmlArticles));
//document.getElementById('rawArticleContent').value = htmlArticle;
};
//var blob = file;
// TODO : should be improved by reading the file chunks by chunks until the article is found,
// instead of reading the whole file starting at blockstart
var blob = dataFile.slice(blockstart);