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Code Issues Releases Wiki Activity

On startup selectively just load the tiddler files that have changed

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This commit is contained in:
Jeremy Ruston 2012-10-13 19:51:01 +01:00
parent c28d304205
commit 060729e66e
2 changed files with 41 additions and 19 deletions
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13
tw5dropbox/appwiki/plugins/dropbox-app.js
View File

@ -31,13 +31,16 @@ exports.startup = function() {
if(index) {
$tw.wiki.addTiddlers(index.tiddlers);
$tw.wiki.addTiddlers(index.shadows,true);
$tw.plugins.dropbox.fileRevisions = index.fileRevisions;
}
// Check for later versions of files on Dropbox
$tw.plugins.dropbox.loadTiddlerFiles("/" + $tw.plugins.dropbox.wikiName + "/tiddlers",function(fileRevisions) {
// Save the tiddler index
$tw.plugins.dropbox.saveTiddlerIndex("/" + $tw.plugins.dropbox.wikiName + "/index.html",fileRevisions,function(error) {
console.log("Saved tiddler index");
});
$tw.plugins.dropbox.loadTiddlerFiles("/" + $tw.plugins.dropbox.wikiName + "/tiddlers",function(hadChanges) {
// Save the tiddler index if we had changes
if(hadChanges) {
$tw.plugins.dropbox.saveTiddlerIndex("/" + $tw.plugins.dropbox.wikiName + "/index.html",function(error) {
console.log("Saved tiddler index");
});
}
});
} else {
alert("This TiddlyWiki file must be in Dropbox");

47
tw5dropbox/plugins/dropbox.js
View File

@ -20,6 +20,7 @@ var queryLoginMarker = "login=true";
$tw.plugins.dropbox = {
client: null, // Dropbox.js client object
fileRevisions: {}, // Hashmap of revision strings for each tiddler file that has been retrieved from Dropbox
titleIsLoggedIn: "$:/plugins/dropbox/IsLoggedIn",
titleUserName: "$:/plugins/dropbox/UserName",
titlePublicAppUrl: "$:/plugins/dropbox/PublicAppUrl",
@ -114,26 +115,40 @@ $tw.plugins.dropbox.loadTiddlerFiles = function(path,callback) {
$tw.plugins.dropbox.loadTiddlerFile(task.path,task.type,task.stats,callback);
}, 2);
// Call the callback when we've processed all the files
q.drain = function() {
var fileRevisions = {};
for(var t=0; t<stats.length; t++) {
fileRevisions[stats[t].name] = stats[t].versionTag;
}
callback(fileRevisions);
q.drain = function () {
callback(true); // Indicate that there were changes
};
// Push a task onto the queue for each file to be processed
for(var s=0; s<stats.length; s++) {
var stat = stats[s],
isMetaFile = stat.path.lastIndexOf(".meta") === stat.path.length - 5;
if(stat.isFile && !stat.isFolder && !isMetaFile) {
q.push({path: stat.path, type: stat.mimeType, stats: stats});
// Don't load the file if the version tag shows it hasn't changed
var hasChanged = stat.versionTag !== $tw.plugins.dropbox.fileRevisions[stat.name];
if(!hasChanged) {
// Check if there is a metafile and whether it has changed
var metafileName = stat.name + ".meta";
for(var p=0; p<stats.length; p++) {
if(stats[p].name === metafileName) {
hasChanged = stats[p].versionTag !== $tw.plugins.dropbox.fileRevisions[metafileName];
}
}
}
if(hasChanged) {
q.push({path: stat.path, type: stat.mimeType, stats: stats});
}
}
}
// If we didn't queue anything for loading we'll have to manually trigger our callback
if(q.length() === 0) {
callback(false); // And tell it that there weren't any changes
}
});
};
// Load a tiddler file
$tw.plugins.dropbox.loadTiddlerFile = function(path,mimeType,stats,callback) {
console.log("loading tiddler from",path);
// If the mime type is "application/octet-stream" then we'll take the type from the extension
var isBinary = false,
p = path.lastIndexOf(".");
@ -146,7 +161,7 @@ $tw.plugins.dropbox.loadTiddlerFile = function(path,mimeType,stats,callback) {
if($tw.utils.hop($tw.config.contentTypeInfo,mimeType)) {
isBinary = $tw.config.contentTypeInfo[mimeType].encoding === "base64";
}
var xhr = $tw.plugins.dropbox.client.readFile(path,{binary: isBinary},function(error,data) {
var xhr = $tw.plugins.dropbox.client.readFile(path,{binary: isBinary},function(error,data,stat) {
if(error) {
callback(error);
return $tw.plugins.dropbox.showError(error);
@ -168,6 +183,8 @@ $tw.plugins.dropbox.loadTiddlerFile = function(path,mimeType,stats,callback) {
} else {
tiddlers = $tw.wiki.deserializeTiddlers(mimeType,data,{title: defaultTitle});
}
// Save the revision of this file so we can detect changes
$tw.plugins.dropbox.fileRevisions[stat.name] = stat.versionTag;
// Check to see if there's a metafile
var metafilePath = path + ".meta",
metafileIndex = null;
@ -178,16 +195,20 @@ $tw.plugins.dropbox.loadTiddlerFile = function(path,mimeType,stats,callback) {
}
// Process the metafile if it's there
if(tiddlers.length === 1 && metafileIndex !== null) {
$tw.plugins.dropbox.client.readFile(metafilePath,function(error,data) {
$tw.plugins.dropbox.client.readFile(metafilePath,function(error,data,stat) {
if(error) {
callback(error);
return $tw.plugins.dropbox.showError(error);
}
// Save the revision of the metafile so we can detect changes later
$tw.plugins.dropbox.fileRevisions[stat.name] = stat.versionTag;
// Extract the metadata and add the tiddlers
tiddlers = [$tw.utils.parseFields(data,tiddlers[0])];
$tw.wiki.addTiddlers(tiddlers);
callback();
});
} else {
// Add the tiddlers
$tw.wiki.addTiddlers(tiddlers);
callback();
}
@ -285,9 +306,9 @@ $tw.plugins.dropbox.createWiki = function(wikiName) {
};
// Save the index file
$tw.plugins.dropbox.saveTiddlerIndex = function(path,fileRevisions,callback) {
$tw.plugins.dropbox.saveTiddlerIndex = function(path,callback) {
// Get the tiddler index information
var index = {tiddlers: [],shadows: [], fileRevisions: {}}
var index = {tiddlers: [],shadows: [], fileRevisions: $tw.plugins.dropbox.fileRevisions};
// First all the tiddlers
$tw.wiki.forEachTiddler(function(title,tiddler) {
if(tiddler.isShadow) {
@ -296,10 +317,8 @@ $tw.plugins.dropbox.saveTiddlerIndex = function(path,fileRevisions,callback) {
index.tiddlers.push(tiddler.fields);
}
});
// Then all the revision information
index.fileRevisions = fileRevisions;
// Save everything to a tiddler
$tw.wiki.addTiddler({title: $tw.plugins.dropbox.titleTiddlerIndex, type: "application/json", text: JSON.stringify(index)});
$tw.wiki.addTiddler({title: $tw.plugins.dropbox.titleTiddlerIndex, type: "application/json", text: JSON.stringify(index)},true);
// Generate the index file
var file = $tw.wiki.renderTiddler("text/plain",$tw.plugins.dropbox.titleAppIndexTemplate);
// Save the index to Dropbox