Created
January 2, 2014 05:39
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import std.stdio, std.net.curl, std.algorithm, std.range, std.array, std.string, std.typecons, std.conv, std.math; | |
enum choco_xml = "choco.xml"; | |
struct TagReader { | |
string data, start, end, cur; | |
bool empty() { return data is null; } | |
string front() { return cur; } | |
TagReader popFront() | |
{ | |
if (findSkip(data, start)) { | |
auto a = findSplit(data, end); | |
if (!a[1].empty) { | |
cur = a[0]; data = a[2]; return this; | |
} | |
} | |
data = null; cur = null; return this; | |
} | |
TagReader save() { return TagReader(data, start, end, cur); } | |
} | |
TagReader readTags(string text, string startTag, string endTag) | |
{ | |
return TagReader(text, startTag, endTag).popFront; | |
} | |
string getNextUrl(string text) | |
{ | |
auto urls = readTags(text, "<link rel=\"next\" href=\"", "\""); | |
return urls.empty ? null : urls.front.replace("&", "&"); | |
} | |
void downloadXML() | |
{ | |
auto f = File(choco_xml, "w"); | |
string url = "http://chocolatey.org/api/v2/Packages?&$filter=IsLatestVersion"; | |
while(url !is null) { | |
writeln(url, "..."); | |
string text = cast(string)get(url); | |
f.rawWrite(text); | |
url = getNextUrl(text); | |
} | |
} | |
void outputCloud(R)(R list) // range of tuples (name, fontSize) | |
{ | |
writeln("<html>"); | |
foreach(t; list) | |
writeln("<font size=\"", t[1],"\"> <a href=\"http://chocolatey.org/packages?q=", t[0], "\">", t[0], "</a> </font> "); | |
writeln("</html>"); | |
} | |
class Tag { | |
string tag; | |
string[] packages; | |
this(string name) { tag = name; } | |
} | |
void showTags() | |
{ | |
Tag[string] allTags; | |
auto entries = std.file.readText(choco_xml).readTags("<entry>", "</entry>"); | |
foreach(entry; entries) { | |
auto title = readTags(entry, "<title type=\"text\">", "</title>"); | |
auto tagz = readTags(entry, "<d:Tags xml:space=\"preserve\">", "</d:Tags>"); | |
if (title.empty || tagz.empty) continue; | |
foreach(tag; tagz.front.strip.splitter(' ').map!(s => s[$-1] == ',' ? s[0..$-1] : s)) { | |
auto taglc = toLower(tag); | |
if (taglc !in allTags) | |
allTags[taglc] = new Tag(tag); | |
allTags[taglc].packages ~= title.front; | |
} | |
} | |
auto tags = allTags.values; | |
sort!("a.tag.toLower < b.tag.toLower")(tags); | |
tags.map!(t => tuple(t.tag, 3 + cast(int) sqrt(cast(real)t.packages.length))).outputCloud; | |
} | |
void showPackages() | |
{ | |
auto entries = std.file.readText(choco_xml).readTags("<entry>", "</entry>").map!((entry) | |
{ | |
auto title = readTags(entry, "<title type=\"text\">", "</title>"); | |
auto num = readTags(entry, "<d:DownloadCount m:type=\"Edm.Int32\">", "</d:D"); | |
return tuple(title.front, num.front.to!real); | |
}); | |
auto k = entries.map!(e => e[1]).reduce!max / 256.0; | |
entries.map!(e => tuple(e[0], 3 + cast(int)sqrt(e[1]/k))).outputCloud; | |
} | |
void main(string[] argv) | |
{ | |
if (argv.length < 2) return writeln("choco {load|tags|names}"); | |
switch(argv[1]) { | |
case "load": return downloadXML(); | |
case "tags": return showTags(); | |
case "names": return showPackages(); | |
default: writeln("unknown command"); | |
} | |
} |
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