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Code Issues Releases Wiki Activity

Added preliminary support for generating RSS feeds

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Which also included adding the shadow shadow tiddlers that are built
into TiddlyWiki's source code, and are not handled by cook.rb and
ginsu.rb
This commit is contained in:
Jeremy Ruston
2011-12-08 16:20:11 +00:00
parent e9d3a878c1
commit c3331cb090
2 changed files with 117 additions and 11 deletions
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84
js/Recipe.js
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@@ -165,15 +165,6 @@ Recipe.prototype.processRecipeFile = function(recipe,text,contextPath) {
});
};
// Special post-processing required for certain ingredient types
Recipe.prototype.readIngredientPostProcess = {
"shadow": function(fields) {
// Add ".shadow" to the name of shadow tiddlers
fields.title = fields.title + ".shadow";
return fields;
}
};
// Read a tiddler file and callback with an array of hashmaps of tiddler fields. For single
// tiddler files it also looks for an accompanying .meta file
Recipe.prototype.readTiddlerFile = function(filepath,contextPath,callback) {
@@ -284,5 +275,80 @@ Recipe.tiddlerOutputter = {
}
};
// Cook an RSS file of the most recent 20 tiddlers
Recipe.prototype.cookRss = function()
{
var me = this,
numRssItems = 20,
s = [],
d = new Date(),
u = this.store.getTiddler("SiteUrl").getParseTree().render("text/plain"),
encodeTiddlyLink = function(title) {
return title.indexOf(" ") == -1 ? title : "[[" + title + "]]";
},
tiddlerToRssItem = function(tiddler,uri) {
var s = "<title" + ">" + utils.htmlEncode(tiddler.fields.title) + "</title" + ">\n";
s += "<description>" + utils.htmlEncode(tiddler.getParseTree().render("text/html")) + "</description>\n";
var i;
if(tiddler.fields.tags) {
for(i=0; i<tiddler.fields.tags.length; i++) {
s += "<category>" + tiddler.fields.tags[i] + "</category>\n";
}
}
s += "<link>" + uri + "#" + encodeURIComponent(encodeTiddlyLink(tiddler.fields.title)) + "</link>\n";
if(tiddler.fields.modified) {
s +="<pubDate>" + tiddler.fields.modified.toUTCString() + "</pubDate>\n";
}
return s;
},
getRssTiddlers = function(sortField,excludeTag) {
var r = [];
me.store.forEachTiddler(function(title,tiddler) {
if(!tiddler.hasTag(excludeTag)) {
r.push(tiddler);
}
});
r.sort(function(a,b) {
var aa = a.fields[sortField] || 0,
bb = b.fields[sortField] || 0;
console.error("Comparing %s (%s) and %s (%s)",a.fields.title,util.inspect(a.fields[sortField],false,8),b.fields.title,util.inspect(b.fields[sortField],false,8));
if(aa < bb) {
return -1;
} else {
if(aa > bb) {
return 1;
} else {
return 0;
}
}
});
return r;
};
// Assemble the header
s.push("<" + "?xml version=\"1.0\"?" + ">");
s.push("<rss version=\"2.0\">");
s.push("<channel>");
s.push("<title" + ">" + utils.htmlEncode(this.store.getTiddler("SiteTitle").getParseTree().render("text/plain")) + "</title" + ">");
if(u)
s.push("<link>" + utils.htmlEncode(u) + "</link>");
s.push("<description>" + utils.htmlEncode(this.store.getTiddler("SiteSubtitle").getParseTree().render("text/plain")) + "</description>");
//s.push("<language>" + config.locale + "</language>");
s.push("<pubDate>" + d.toUTCString() + "</pubDate>");
s.push("<lastBuildDate>" + d.toUTCString() + "</lastBuildDate>");
s.push("<docs>http://blogs.law.harvard.edu/tech/rss</docs>");
s.push("<generator>https://github.com/Jermolene/cook.js</generator>");
// The body
var tiddlers = getRssTiddlers("modified","excludeLists");
var i,n = numRssItems > tiddlers.length ? 0 : tiddlers.length-numRssItems;
for(i=tiddlers.length-1; i>=n; i--) {
s.push("<item>\n" + tiddlerToRssItem(tiddlers[i],u) + "\n</item>");
}
// And footer
s.push("</channel>");
s.push("</rss>");
// Save it all
return s.join("\n");
}
exports.Recipe = Recipe;