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  • can't change wallpaper real time regedit commands

    - by itagomo
    i'm a first time 'SuperUser' poster .. what i want is to programatically change Desktop Wallpaper every few hours .. i'm using a batch file (.bat) and don't want to use other languages or programs, just the pre-installed stuffs with Windows XP .. i've already made my script that will modify values in the Registry reg add "HKCU\Control Panel\Desktop" /v Wallpaper /d "C:\Pictures\picture1.jpg" but it's not taking effect real time even with this command: RUNDLL32.EXE USER32.DLL,UpdatePerUserSystemParameters ,1 ,True need to reboot first to take effect. if i'm going to use Display Properties, it'll show at once. what i've noticed is that changes will take effect real time if it's a .bmp file and not for .jpg images. Second option is to convert JPG to 24-bit BMP files (to look exactly the same, but will triple the file size), but i'm hoping a better way .. i've already googled things but no avail.. i hope you (the helpful reader) can post any .bat or even vbs script to change Desktop Wallpaper instantly with JPG pictures .. hoping there's an answer without installing other apps or scripts ..

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  • Can't login after upgrading to Windows 8.1

    - by flatline
    This afternoon, I upgraded my work laptop from Windows 8 to Windows 8.1. I had previously had a local account, but after the upgrade, it prompted me to enter my windows account credentials, which I had set up beforehand at some point. I entered my password and clicked next, went through another screen or two, grew tired with the process, and clicked whatever the equivalent button to "skip this step" that I was presented with. Now I can't log in. Not with my (previous) local account password, and not with my windows account password. It's a Dell with biometric identification, which I had set up previously, so I put my finger on the reader and it complained that I couldn't use that fingerprint because I had changed my password. But, I hadn't wittingly changed my password at all. I assume that what happened is that, by entering my credentials, my local account was tied to the Windows account, but because I cancelled the process partway through, something went wrong and I cannot log in. A few questions: 1) How do I log in with my windows account credentials? Should LOCALMACHINENAME\username, which was my previous login method, still work for the Windows account? When I booted to safemode it prompted me with WindowsAccount\myemailaddress, which allowed me to login there, but the regular login doesn't accept the '@' symbol. 2) Is there any way to make that account local-only again? I can't find any way of doing it. 3) I managed to enable the local administrator account and get back into the box; failing all else, is there a quick way to migrate my old profile over to a new user?

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  • System requirements for running windows 8 (basic office use) in virtualbox (ubuntu as host os)

    - by Tor Thommesen
    I want to run windows 8 as a guest os with virtualbox on some thinkpad (haven't bought one yet) running Ubuntu 12.04. Apart from virtualizing windows 8 (mostly just for use with the office suite app) my needs are very modest, I don't need much more than emacs and a browser. What I'd like to know is what kind of specs will be necessary to run windows 8 well as a vm, using the office apps. It would be a shame to waste money on overpowered hardware. Are there any official guidelines from oracle or windows on this? Would this lenovo x220, for example, be sufficiently strong? The specs below were taken from this review. Intel Core i5-2520M dual-core processor (2.5GHz, 3MB cache, 3.2GHz Turbo frequency) Windows 7 Professional (64-bit) 12.5-inch Premium HD (1366 x 768) LED Backlit Display (IPS) Intel Integrated HD Graphics 4GB DDR3 (1333MHz) 320GB Hitachi Travelstar hard drive (Z7K320) Intel Centrino Advanced-N 6205 (Taylor Peak) 2x2 AGN wireless card Intel 82579LM Gigabit Ethernet 720p High Definition webcam Fingerprint reader 6-cell battery (63Wh) and optional slice battery (65Wh) Dimensions: 12 (L) x 8.2 (W) x 0.5-1.5 (H) inches with 6-cell battery Weight: 3.5 pounds with 6-cell battery 4.875 pounds with 6-cell battery and optional external battery slice Price as configured: $1,299.00 (starting at $979.00)

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  • Retrieving Json Array

    - by Rahul Varma
    Hi, I am trying to retrieve the values from the following url: http://rentopoly.com/ajax.php?query=Bo. I want to get the values of all the suggestions to be displayed in a list view one by one. This is how i want to do... public class AlertsAdd { public ArrayList<JSONObject> retrieveJSONArray(String urlString) { String result = queryRESTurl(urlString); ArrayList<JSONObject> ALERTS = new ArrayList<JSONObject>(); if (result != null) { try { JSONObject json = new JSONObject(result); JSONArray alertsArray = json.getJSONArray("suggestions"); for (int a = 0; a < alertsArray.length(); a++) { JSONObject alertitem = alertsArray.getJSONObject(a); ALERTS.add(alertitem); } return ALERTS; } catch (JSONException e) { Log.e("JSON", "There was an error parsing the JSON", e); } } JSONObject myObject = new JSONObject(); try { myObject.put("suggestions",myObject.getJSONArray("suggestions")); ALERTS.add(myObject); } catch (JSONException e1) { Log.e("JSON", "There was an error creating the JSONObject", e1); } return ALERTS; } private String queryRESTurl(String url) { // URLConnection connection; HttpClient httpclient = new DefaultHttpClient(); HttpGet httpget = new HttpGet(url); HttpResponse response; try { response = httpclient.execute(httpget); HttpEntity entity = response.getEntity(); if (entity != null) { InputStream instream = entity.getContent(); String result = convertStreamToString(instream); instream.close(); return result; } } catch (ClientProtocolException e) { Log.e("REST", "There was a protocol based error", e); } catch (IOException e) { Log.e("REST", "There was an IO Stream related error", e); } return null; } /** * To convert the InputStream to String we use the * BufferedReader.readLine() method. We iterate until the BufferedReader * return null which means there's no more data to read. Each line will * appended to a StringBuilder and returned as String. */ private String convertStreamToString(InputStream is) { BufferedReader reader = new BufferedReader(new InputStreamReader(is)); StringBuilder sb = new StringBuilder(); String line = null; try { while ((line = reader.readLine()) != null) { sb.append(line + "\n"); } } catch (IOException e) { e.printStackTrace(); } finally { try { is.close(); } catch (IOException e) { e.printStackTrace(); } } return sb.toString(); } } Here's the adapter code... public class AlertsAdapter extends ArrayAdapter<JSONObject> { public AlertsAdapter(Activity activity, List<JSONObject> alerts) { super(activity, 0, alerts); } @Override public View getView(int position, View convertView, ViewGroup parent) { Activity activity = (Activity) getContext(); LayoutInflater inflater = activity.getLayoutInflater(); View rowView = inflater.inflate(R.layout.list_text, null); JSONObject imageAndText = getItem(position); TextView textView = (TextView) rowView.findViewById(R.id.last_build_stat); try { textView.setText((String)imageAndText.get("suggestions")); } catch (JSONException e) { textView.setText("JSON Exception"); } return rowView; } } Here's the logcat... 04-30 13:09:46.656: INFO/ActivityManager(584): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.WorldToyota/.Alerts } 04-30 13:09:50.417: ERROR/JSON(924): There was an error parsing the JSON 04-30 13:09:50.417: ERROR/JSON(924): org.json.JSONException: JSONArray[0] is not a JSONObject. 04-30 13:09:50.417: ERROR/JSON(924): at org.json.JSONArray.getJSONObject(JSONArray.java:268) 04-30 13:09:50.417: ERROR/JSON(924): at com.WorldToyota.AlertsAdd.retrieveJSONArray(AlertsAdd.java:30) 04-30 13:09:50.417: ERROR/JSON(924): at com.WorldToyota.Alerts.onCreate(Alerts.java:20) 04-30 13:09:50.417: ERROR/JSON(924): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123) 04-30 13:09:50.417: ERROR/JSON(924): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364) 04-30 13:09:50.417: ERROR/JSON(924): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417) 04-30 13:09:50.417: ERROR/JSON(924): at android.app.ActivityThread.access$2100(ActivityThread.java:116) 04-30 13:09:50.417: ERROR/JSON(924): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 04-30 13:09:50.417: ERROR/JSON(924): at android.os.Handler.dispatchMessage(Handler.java:99) 04-30 13:09:50.417: ERROR/JSON(924): at android.os.Looper.loop(Looper.java:123) 04-30 13:09:50.417: ERROR/JSON(924): at android.app.ActivityThread.main(ActivityThread.java:4203) 04-30 13:09:50.417: ERROR/JSON(924): at java.lang.reflect.Method.invokeNative(Native Method) 04-30 13:09:50.417: ERROR/JSON(924): at java.lang.reflect.Method.invoke(Method.java:521) 04-30 13:09:50.417: ERROR/JSON(924): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 04-30 13:09:50.417: ERROR/JSON(924): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 04-30 13:09:50.417: ERROR/JSON(924): at dalvik.system.NativeStart.main(Native Method) 04-30 13:09:50.688: ERROR/JSON(924): There was an error creating the JSONObject 04-30 13:09:50.688: ERROR/JSON(924): org.json.JSONException: JSONObject["suggestions"] not found. 04-30 13:09:50.688: ERROR/JSON(924): at org.json.JSONObject.get(JSONObject.java:287) 04-30 13:09:50.688: ERROR/JSON(924): at org.json.JSONObject.getJSONArray(JSONObject.java:362) 04-30 13:09:50.688: ERROR/JSON(924): at com.WorldToyota.AlertsAdd.retrieveJSONArray(AlertsAdd.java:41) 04-30 13:09:50.688: ERROR/JSON(924): at com.WorldToyota.Alerts.onCreate(Alerts.java:20) 04-30 13:09:50.688: ERROR/JSON(924): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123) 04-30 13:09:50.688: ERROR/JSON(924): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364) 04-30 13:09:50.688: ERROR/JSON(924): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417) 04-30 13:09:50.688: ERROR/JSON(924): at android.app.ActivityThread.access$2100(ActivityThread.java:116) 04-30 13:09:50.688: ERROR/JSON(924): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 04-30 13:09:50.688: ERROR/JSON(924): at android.os.Handler.dispatchMessage(Handler.java:99) 04-30 13:09:50.688: ERROR/JSON(924): at android.os.Looper.loop(Looper.java:123) 04-30 13:09:50.688: ERROR/JSON(924): at android.app.ActivityThread.main(ActivityThread.java:4203) 04-30 13:09:50.688: ERROR/JSON(924): at java.lang.reflect.Method.invokeNative(Native Method) 04-30 13:09:50.688: ERROR/JSON(924): at java.lang.reflect.Method.invoke(Method.java:521) 04-30 13:09:50.688: ERROR/JSON(924): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 04-30 13:09:50.688: ERROR/JSON(924): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 04-30 13:09:50.688: ERROR/JSON(924): at dalvik.system.NativeStart.main(Native Method) Plz help me parsing this script and displaying the values in list format....

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  • Android ASync task ProgressDialog isn't showing until background thread finishes

    - by jackbot
    I've got an Android activity which grabs an RSS feed from a URL, and uses the SAX parser to stick each item from the XML into an array. This all works fine but, as expected, takes a bit of time, so I want to use AsyncActivity to do it in the background. My code is as follows: class AddTask extends AsyncTask<Void, Item, Void> { protected void onPreExecute() { pDialog = ProgressDialog.show(MyActivity.this,"Please wait...", "Retrieving data ...", true); } protected Void doInBackground(Void... unused) { items = parser.getItems(); for (Item it : items) { publishProgress(it); } return(null); } protected void onProgressUpdate(Item... item) { adapter.add(item[0]); } protected void onPostExecute(Void unused) { pDialog.dismiss(); } } Which I call in onCreate() with new AddTask().execute(); The line items = parser.getItems() works fine - items being the arraylist containing each item from the XML. The problem I'm facing is that on starting the activity, the ProgressDialog which i create in onPreExecute() isn't displayed until after the doInBackground() method has finished. i.e. I get a black screen, a long pause, then a completely populated list with the items in. Why is this happening? Why isn't the UI drawing, the ProgressDialog showing, the parser getting the items and incrementally adding them to the list, then the ProgressDialog dismissing?

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  • Using NSXMLParser with CDATA

    - by Robb
    I'm parsing an RSS feed with NSXMLParser and it's working fine for the title and other strings but one of the elements is an image thats like <!CDATA <a href="http:image..etc> How do I add that as my cell image in my table view? Would I define that as an image type? This is what i'm using to do my parsing: - (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{ //NSLog(@"found this element: %@", elementName); currentElement = [elementName copy]; if ([elementName isEqualToString:@"item"]) { // clear out our story item caches... item = [[NSMutableDictionary alloc] init]; currentTitle = [[NSMutableString alloc] init]; currentDate = [ [NSMutableString alloc] init]; currentSummary = [[NSMutableString alloc] init]; currentLink = [[NSMutableString alloc] init]; } } - (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{ //NSLog(@"ended element: %@", elementName); if ([elementName isEqualToString:@"item"]) { // save values to an item, then store that item into the array... [item setObject:currentTitle forKey:@"title"]; [item setObject:currentLink forKey:@"link"]; [item setObject:currentSummary forKey:@"description"]; [item setObject:currentDate forKey:@"date"]; [stories addObject:[item copy]]; NSLog(@"adding story: %@", currentTitle); } } - (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{ //NSLog(@"found characters: %@", string); // save the characters for the current item... if ([currentElement isEqualToString:@"title"]) { [currentTitle appendString:string]; } else if ([currentElement isEqualToString:@"link"]) { [currentLink appendString:string]; } else if ([currentElement isEqualToString:@"description"]) { [currentSummary appendString:string]; } else if ([currentElement isEqualToString:@"pubDate"]) { [currentDate appendString:string]; } }

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  • UIWebView not loading URL when URL is passed from UITableView

    - by Mark Hazlett
    Hey Everyone, So i'm building a webView into my application to show the contents of a URL that I am passing from a selection in a UITableView. I know the UIWebView is loading content properly because if you hard code say http://www.google.ca into the NSURL then it loads fine, however when I'm passing the URL that I parsed from an RSS feed back from the UITableView it won't load the URL properly. I tried the debugger and the URL is coming out as nil right before I try and parse it, however I can use NSLog to print the value of it out to the console. here's the code in my UIViewController that has my UIWebView #import <UIKit/UIKit.h> @interface ReadFeedWebViewController : UIViewController { NSString *urlToGet; IBOutlet UIWebView *webView; } @property(nonatomic, retain) IBOutlet UIWebView *webView; @property(nonatomic, retain) NSString *urlToGet; @end Here's the code for my implementation's viewDidLoad method... // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; NSLog(@"Url inside Web View Controller - %@", urlToGet); NSURL *url = [NSURL URLWithString:urlToGet]; NSURLRequest *requestObj = [NSURLRequest requestWithURL:url]; [self.webView loadRequest:requestObj]; } Once again, I can print the URL to NSLog fine and if I hard code the URL into the NSURL object then it will load fine in the UIWebView. Here is where I'm setting the value in my UITableViewController... - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { ReadFeedWebViewController *extendedView = [[ReadFeedWebViewController alloc] init]; int storyIndex = [indexPath indexAtPosition: [indexPath length] - 1]; extendedView.urlToGet = [[stories objectAtIndex: storyIndex] objectForKey:@"link"]; //NSLog([[stories objectAtIndex: storyIndex] objectForKey:@"summary"]); NSLog([[stories objectAtIndex: storyIndex] objectForKey:@"link"]); [self.navigationController pushViewController:extendedView animated:YES]; [extendedView release]; } However, since I can print the value using NSLog in the extendedView view controller I know it's being passed properly. Cheers

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  • PHP: Detect encoding and make everything UTF-8

    - by marco92w
    Hello! I'm reading out lots of texts from various RSS feeds and inserting them into my database. Of course, there are several different character encodings used in the feeds, e.g. UTF-8 and ISO-8859-1. Unfortunately, there are sometimes problems with the encodings of the texts. Example: 1) The "ß" in "Fußball" should look like this in my database: "Ÿ". If it is a "Ÿ", it is displayed correctly. 2) Sometimes, the "ß" in "Fußball" looks like this in my database: "ß". Then it is displayed wrongly, of course. 3) In other cases, the "ß" is saved as a "ß" - so without any change. Then it is also displayed wrongly. What can I do to avoid the cases 2 and 3? How can I make everything the same encoding, preferably UTF-8? When must I use utf8_encode(), when must I use utf8_decode() (it's clear what the effect is but when must I use the functions?) and when must I do nothing with the input? Can you help me and tell me how to make everything the same encoding? Perhaps with the function mb-detect-encoding()? Can I write a function for this? So my problems are: 1) How to find out what encoding the text uses 2) How to convert it to UTF-8 - whatever the old encoding is Thanks in advance! EDIT: Would a function like this work? function correct_encoding($text) { $current_encoding = mb_detect_encoding($text, 'auto'); $text = iconv($current_encoding, 'UTF-8', $text); return $text; } I've tested it but it doesn't work. What's wrong with it?

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  • ps forrest for session id

    - by azatoth
    Often I want to get a nice readout what process are running and their relationship; I usually by habit runs ps auxfww and eventual grep for the process in question. Having been thinking about the problem I tried to create an oneliner to get the process tree in ps ufww format for all processes which has the session id specified by arbitrary process name(s); ending up in following code: ps ufww --sid=$(ps -C apache2 -o sess --no-headers | sort | uniq | grep -v -E '^ +0$' | awk 'NR==1{x=$0;next}NF{x=x","$0};END{gsub(/[[:space:]]*/,"",x);print x}') giving for example following output: USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 4157 0.0 0.1 41264 3120 ? Ss Jun11 0:00 /usr/sbin/apache2 -k start www-data 4329 0.0 0.0 41264 1976 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4330 0.0 0.0 41264 2028 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4331 0.0 0.0 41264 2028 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4332 0.0 0.0 41264 2028 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4333 0.0 0.0 41264 2032 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 6648 0.0 0.0 41264 1884 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 6654 0.0 0.0 41264 1884 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 6655 0.0 0.0 41264 1884 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start I do wonder now if anyone has an better idea to solve this issue? Are there anything out there that is easier to "oneline" and gives above or better information? For example I would actually want to have included all childs relative any parent. (uncertain if this should be on SF instead, but felt it was more like an programming question)

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  • Web scraping etiquette

    - by Ash
    I'm considering writing a simple web scraping application to extract information from a website that does not seem to specifically prohibit this. I've checked for other alternatives (eg RSS, web service) to get this information, but there are none available at this stage. Despite this I've also developed/maintained a few websites myself and so I realize that if web scraping is done naively/greedily it can slow things down for other users and generally become a nuisance. So, what etiquette is involved in terms of: Number of requests per second/minute/hour. HTTP User Agent content. HTTP Referer content. HTTP Cache settings. Buffer size for larger files/resources. Legalities and licensing issues. Good tools or design approaches to use. Robots.txt, is this relevant for web scraping or just crawlers/spiders? Compression such as GZip in requests. Update Found this relevant question on Meta: Etiquette of Screen Scaping StackOverflow. Jeff Atwood's answer has some helpful recommendations. Other related StackOverflow questions: Options for html scraping Legalities of screen scraping

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  • parsed xml file: skip creation if blank?

    - by GoodGets
    This could be a HappyMapper specific question, but I don't think so. In my app, users can upload their blog subscriptions (via an OPML file), which I parse and add to their profile. The only problem is during the parsing, or more specifically the creation of each subscription, I can't figure out how to skip over entries that are just "labels". Since OPML files allow you to label your blogs, or organize them into folders, this is my problem. The actual blog subscriptions and their labels both have "outline" tags. <outline text="Rails" > <outline title="Katz Got Your Tongue?" text="Katz Got Your Tongue?" htmlUrl="http://yehudakatz.com" type="rss" xmlUrl="http://feeds.feedburner.com/KatzGotYourTongue" /> After parsing, I create each feed via a method call inside of the HappyMapper module def create_feed Feed.new( :feed_htmlUrl => self.htmlUrl, :feed_title => self.title, ... But how do I prevent it from creating new "feeds" for those outline tags that are just tags? (i.e. those that don't have an htmlUrl?)

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  • Django Comments and Rating Systems

    - by Patrick
    Hi Folks, I am looking for blogging and comments system that can smoothly integrate with my Django sites, I found there is a lot in the Net and get lost a bit, and I don't have much experience on this. Hope you guys can give me some suggestion. Here is the things that I would like to have: Tag Clouds, Articles Archive (by months/by years), Articles Rating (e.g. with Stars or customize icons), Comments to the particular Topic/Articles, Sub-Comments of a particular comments (i.e. following up comments) Blogs/Articles Searching Able to relate other articles that is relevant (i.e. follow up Articles) Pagination of the comments if get too long OpenIDs supports (e.g. facebook, hotmail, blogger, twitter...etc) Support login before user can comments Able to retrieve Blogs' Header and customized the display order Able to subscribe this article to RSS Able to Email this to friends (this may not belongs to the comments system) If I missed some common functions, please let me know, the comments system I am looking for should do most jobs that those popular comments system should do in the web, e.g. WordsPress. Thank you so much everyone. Have a nice day.

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  • Solving embarassingly parallel problems using Python multiprocessing

    - by gotgenes
    How does one use multiprocessing to tackle embarrassingly parallel problems? Embarassingly parallel problems typically consist of three basic parts: Read input data (from a file, database, tcp connection, etc.). Run calculations on the input data, where each calculation is independent of any other calculation. Write results of calculations (to a file, database, tcp connection, etc.). We can parallelize the program in two dimensions: Part 2 can run on multiple cores, since each calculation is independent; order of processing doesn't matter. Each part can run independently. Part 1 can place data on an input queue, part 2 can pull data off the input queue and put results onto an output queue, and part 3 can pull results off the output queue and write them out. This seems a most basic pattern in concurrent programming, but I am still lost in trying to solve it, so let's write a canonical example to illustrate how this is done using multiprocessing. Here is the example problem: Given a CSV file with rows of integers as input, compute their sums. Separate the problem into three parts, which can all run in parallel: Process the input file into raw data (lists/iterables of integers) Calculate the sums of the data, in parallel Output the sums Below is traditional, single-process bound Python program which solves these three tasks: #!/usr/bin/env python # -*- coding: UTF-8 -*- # basicsums.py """A program that reads integer values from a CSV file and writes out their sums to another CSV file. """ import csv import optparse import sys def make_cli_parser(): """Make the command line interface parser.""" usage = "\n\n".join(["python %prog INPUT_CSV OUTPUT_CSV", __doc__, """ ARGUMENTS: INPUT_CSV: an input CSV file with rows of numbers OUTPUT_CSV: an output file that will contain the sums\ """]) cli_parser = optparse.OptionParser(usage) return cli_parser def parse_input_csv(csvfile): """Parses the input CSV and yields tuples with the index of the row as the first element, and the integers of the row as the second element. The index is zero-index based. :Parameters: - `csvfile`: a `csv.reader` instance """ for i, row in enumerate(csvfile): row = [int(entry) for entry in row] yield i, row def sum_rows(rows): """Yields a tuple with the index of each input list of integers as the first element, and the sum of the list of integers as the second element. The index is zero-index based. :Parameters: - `rows`: an iterable of tuples, with the index of the original row as the first element, and a list of integers as the second element """ for i, row in rows: yield i, sum(row) def write_results(csvfile, results): """Writes a series of results to an outfile, where the first column is the index of the original row of data, and the second column is the result of the calculation. The index is zero-index based. :Parameters: - `csvfile`: a `csv.writer` instance to which to write results - `results`: an iterable of tuples, with the index (zero-based) of the original row as the first element, and the calculated result from that row as the second element """ for result_row in results: csvfile.writerow(result_row) def main(argv): cli_parser = make_cli_parser() opts, args = cli_parser.parse_args(argv) if len(args) != 2: cli_parser.error("Please provide an input file and output file.") infile = open(args[0]) in_csvfile = csv.reader(infile) outfile = open(args[1], 'w') out_csvfile = csv.writer(outfile) # gets an iterable of rows that's not yet evaluated input_rows = parse_input_csv(in_csvfile) # sends the rows iterable to sum_rows() for results iterable, but # still not evaluated result_rows = sum_rows(input_rows) # finally evaluation takes place as a chain in write_results() write_results(out_csvfile, result_rows) infile.close() outfile.close() if __name__ == '__main__': main(sys.argv[1:]) Let's take this program and rewrite it to use multiprocessing to parallelize the three parts outlined above. Below is a skeleton of this new, parallelized program, that needs to be fleshed out to address the parts in the comments: #!/usr/bin/env python # -*- coding: UTF-8 -*- # multiproc_sums.py """A program that reads integer values from a CSV file and writes out their sums to another CSV file, using multiple processes if desired. """ import csv import multiprocessing import optparse import sys NUM_PROCS = multiprocessing.cpu_count() def make_cli_parser(): """Make the command line interface parser.""" usage = "\n\n".join(["python %prog INPUT_CSV OUTPUT_CSV", __doc__, """ ARGUMENTS: INPUT_CSV: an input CSV file with rows of numbers OUTPUT_CSV: an output file that will contain the sums\ """]) cli_parser = optparse.OptionParser(usage) cli_parser.add_option('-n', '--numprocs', type='int', default=NUM_PROCS, help="Number of processes to launch [DEFAULT: %default]") return cli_parser def main(argv): cli_parser = make_cli_parser() opts, args = cli_parser.parse_args(argv) if len(args) != 2: cli_parser.error("Please provide an input file and output file.") infile = open(args[0]) in_csvfile = csv.reader(infile) outfile = open(args[1], 'w') out_csvfile = csv.writer(outfile) # Parse the input file and add the parsed data to a queue for # processing, possibly chunking to decrease communication between # processes. # Process the parsed data as soon as any (chunks) appear on the # queue, using as many processes as allotted by the user # (opts.numprocs); place results on a queue for output. # # Terminate processes when the parser stops putting data in the # input queue. # Write the results to disk as soon as they appear on the output # queue. # Ensure all child processes have terminated. # Clean up files. infile.close() outfile.close() if __name__ == '__main__': main(sys.argv[1:]) These pieces of code, as well as another piece of code that can generate example CSV files for testing purposes, can be found on github. I would appreciate any insight here as to how you concurrency gurus would approach this problem. Here are some questions I had when thinking about this problem. Bonus points for addressing any/all: Should I have child processes for reading in the data and placing it into the queue, or can the main process do this without blocking until all input is read? Likewise, should I have a child process for writing the results out from the processed queue, or can the main process do this without having to wait for all the results? Should I use a processes pool for the sum operations? If yes, what method do I call on the pool to get it to start processing the results coming into the input queue, without blocking the input and output processes, too? apply_async()? map_async()? imap()? imap_unordered()? Suppose we didn't need to siphon off the input and output queues as data entered them, but could wait until all input was parsed and all results were calculated (e.g., because we know all the input and output will fit in system memory). Should we change the algorithm in any way (e.g., not run any processes concurrently with I/O)?

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  • Ideas on C# DSL syntax

    - by Dmitriy Nagirnyak
    Hi, I am thinking about implementing a templating engine using only the plain C#/.NET 4 syntax with the benefit of static typing. Then on top of that templating language we could create Domain Specific Languages (let's say HTML4, XHTML, HTML5, RSS, Atom, Multipart Emails and so on). One of the best DSLs in .NET 4 (if not only one) is SharpDOM. It implements HTML-specific DSL. Looking at SharpDOM, I am really impressed of what you can do using .NET (4). So I believe there are some not-so-well-known ways for implementing custom DSLs in .NET 4. Possibly not as well as in Ruby, but still. So my the question would be: what are the C# (4) specific syntax features that can be used for implementing custom DSLs? Examples I can think of right now: // HTML - doesn't look tooo readable :) div(clas: "head", ul(clas: "menu", id: "main-menu", () => { foreach(var item in allItems) { li(item.Name) } }) // See how much noise it has with all the closing brackets? ) // Plain text (Email or something) - probably too simple Line("Dear {0}", user.Name); Line("You have been kicked off from this site"); For me it is really hard to come up with the syntax with least amount of noise. Please NOTE that I am not talking about another language (Boo, IronRuby etc), neither I am not talking about different templating engines (NHaml, Spark, StringTemplate etc). Thanks, Dmitriy.

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  • Asynchronous Webcrawling F#, something wrong ?

    - by jlezard
    Not quite sure if it is ok to do this but, my question is: Is there something wrong with my code ? It doesn't go as fast as I would like, and since I am using lots of async workflows maybe I am doing something wrong. The goal here is to build something that can crawl 20 000 pages in less than an hour. open System open System.Text open System.Net open System.IO open System.Text.RegularExpressions open System.Collections.Generic open System.ComponentModel open Microsoft.FSharp open System.Threading //This is the Parallel.Fs file type ComparableUri ( uri: string ) = inherit System.Uri( uri ) let elts (uri:System.Uri) = uri.Scheme, uri.Host, uri.Port, uri.Segments interface System.IComparable with member this.CompareTo( uri2 ) = compare (elts this) (elts(uri2 :?> ComparableUri)) override this.Equals(uri2) = compare this (uri2 :?> ComparableUri ) = 0 override this.GetHashCode() = 0 ///////////////////////////////////////////////Funtions to retreive html string////////////////////////////// let mutable error = Set.empty<ComparableUri> let mutable visited = Set.empty<ComparableUri> let getHtmlPrimitiveAsyncDelay (delay:int) (uri : ComparableUri) = async{ try let req = (WebRequest.Create(uri)) :?> HttpWebRequest // 'use' is equivalent to ‘using’ in C# for an IDisposable req.UserAgent<-"Mozilla" //Console.WriteLine("Waiting") do! Async.Sleep(delay * 250) let! resp = (req.AsyncGetResponse()) Console.WriteLine(uri.AbsoluteUri+" got response after delay "+string delay) use stream = resp.GetResponseStream() use reader = new StreamReader(stream) let html = reader.ReadToEnd() return html with | _ as ex -> Console.WriteLine( ex.ToString() ) lock error (fun () -> error<- error.Add uri ) lock visited (fun () -> visited<-visited.Add uri ) return "BadUri" } ///////////////////////////////////////////////Active Pattern Matching to retreive href////////////////////////////// let (|Matches|_|) (pat:string) (inp:string) = let m = Regex.Matches(inp, pat) // Note the List.tl, since the first group is always the entirety of the matched string. if m.Count > 0 then Some (List.tail [ for g in m -> g.Value ]) else None let (|Match|_|) (pat:string) (inp:string) = let m = Regex.Match(inp, pat) // Note the List.tl, since the first group is always the entirety of the matched string. if m.Success then Some (List.tail [ for g in m.Groups -> g.Value ]) else None ///////////////////////////////////////////////Find Bad href////////////////////////////// let isEmail (link:string) = link.Contains("@") let isMailto (link:string) = if Seq.length link >=6 then link.[0..5] = "mailto" else false let isJavascript (link:string) = if Seq.length link >=10 then link.[0..9] = "javascript" else false let isBadUri (link:string) = link="BadUri" let isEmptyHttp (link:string) = link="http://" let isFile (link:string)= if Seq.length link >=6 then link.[0..5] = "file:/" else false let containsPipe (link:string) = link.Contains("|") let isAdLink (link:string) = if Seq.length link >=6 then link.[0..5] = "adlink" elif Seq.length link >=9 then link.[0..8] = "http://adLink" else false ///////////////////////////////////////////////Find Bad href////////////////////////////// let getHref (htmlString:string) = let urlPat = "href=\"([^\"]+)" match htmlString with | Matches urlPat urls -> urls |> List.map( fun href -> match href with | Match (urlPat) (link::[]) -> link | _ -> failwith "The href was not in correct format, there was more than one match" ) | _ -> Console.WriteLine( "No links for this page" );[] |> List.filter( fun link -> not(isEmail link) ) |> List.filter( fun link -> not(isMailto link) ) |> List.filter( fun link -> not(isJavascript link) ) |> List.filter( fun link -> not(isBadUri link) ) |> List.filter( fun link -> not(isEmptyHttp link) ) |> List.filter( fun link -> not(isFile link) ) |> List.filter( fun link -> not(containsPipe link) ) |> List.filter( fun link -> not(isAdLink link) ) let treatAjax (href:System.Uri) = let link = href.ToString() let firstPart = (link.Split([|"#"|],System.StringSplitOptions.None)).[0] new Uri(firstPart) //only follow pages with certain extnsion or ones with no exensions let followHref (href:System.Uri) = let valid2 = set[".py"] let valid3 = set[".php";".htm";".asp"] let valid4 = set[".php3";".php4";".php5";".html";".aspx"] let arrLength = href.Segments |> Array.length let lastExtension = (href.Segments).[arrLength-1] let lengthLastExtension = Seq.length lastExtension if (lengthLastExtension <= 3) then not( lastExtension.Contains(".") ) else //test for the 2 case let last4 = lastExtension.[(lengthLastExtension-1)-3..(lengthLastExtension-1)] let isValid2 = valid2|>Seq.exists(fun validEnd -> last4.EndsWith( validEnd) ) if isValid2 then true else if lengthLastExtension <= 4 then not( last4.Contains(".") ) else let last5 = lastExtension.[(lengthLastExtension-1)-4..(lengthLastExtension-1)] let isValid3 = valid3|>Seq.exists(fun validEnd -> last5.EndsWith( validEnd) ) if isValid3 then true else if lengthLastExtension <= 5 then not( last5.Contains(".") ) else let last6 = lastExtension.[(lengthLastExtension-1)-5..(lengthLastExtension-1)] let isValid4 = valid4|>Seq.exists(fun validEnd -> last6.EndsWith( validEnd) ) if isValid4 then true else not( last6.Contains(".") ) && not(lastExtension.[0..5] = "mailto") //Create the correct links / -> add the homepage , make them a comparabel Uri let hrefLinksToUri ( uri:ComparableUri ) (hrefLinks:string list) = hrefLinks |> List.map( fun link -> try if Seq.length link <4 then Some(new Uri( uri, link )) else if link.[0..3] = "http" then Some(new Uri(link)) else Some(new Uri( uri, link )) with | _ as ex -> Console.WriteLine(link); lock error (fun () ->error<-error.Add uri) None ) |> List.filter( fun link -> link.IsSome ) |> List.map( fun o -> o.Value) |> List.map( fun uri -> new ComparableUri( string uri ) ) //Treat uri , removing ajax last part , and only following links specified b Benoit let linksToFollow (hrefUris:ComparableUri list) = hrefUris |>List.map( treatAjax ) |>List.filter( fun link -> followHref link ) |>List.map( fun uri -> new ComparableUri( string uri ) ) |>Set.ofList let needToVisit uri = ( lock visited (fun () -> not( visited.Contains uri) ) ) && (lock error (fun () -> not( error.Contains uri) )) let getLinksToFollowAsyncDelay (delay:int) ( uri: ComparableUri ) = async{ let! links = getHtmlPrimitiveAsyncDelay delay uri lock visited (fun () ->visited<-visited.Add uri) let linksToFollow = getHref links |> hrefLinksToUri uri |> linksToFollow |> Set.filter( needToVisit ) |> Set.map( fun link -> if uri.Authority=link.Authority then link else link ) return linksToFollow } //Add delays if visitng same authority let getDelay(uri:ComparableUri) (authorityDelay:Dictionary<string,int>) = let uriAuthority = uri.Authority let hasAuthority,delay = authorityDelay.TryGetValue(uriAuthority) if hasAuthority then authorityDelay.[uriAuthority] <-delay+1 delay else authorityDelay.Add(uriAuthority,1) 0 let rec getLinksToFollowFromSetAsync maxIteration ( uris: seq<ComparableUri> ) = let authorityDelay = Dictionary<string,int>() if maxIteration = 100 then Console.WriteLine("Finished") else //Unite by authority add delay for those we same authority others ignore let stopwatch= System.Diagnostics.Stopwatch() stopwatch.Start() let newLinks = uris |> Seq.map( fun uri -> let delay = lock authorityDelay (fun () -> getDelay uri authorityDelay ) getLinksToFollowAsyncDelay delay uri ) |> Async.Parallel |> Async.RunSynchronously |> Seq.concat stopwatch.Stop() Console.WriteLine("\n\n\n\n\n\n\nTimeElapse : "+string stopwatch.Elapsed+"\n\n\n\n\n\n\n\n\n") getLinksToFollowFromSetAsync (maxIteration+1) newLinks getLinksToFollowFromSetAsync 0 (seq[ComparableUri( "http://twitter.com/" )]) Console.WriteLine("Finished") Some feedBack would be great ! Thank you (note this is just something I am doing for fun)

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  • How can you change Network settings (IP Address, DNS, WINS, Host Name) with code in C#

    - by rathkopf
    I am developing a wizard for a machine that is to be used as a backup of other machines. When it replaces an existing machine, it needs to set its IP address, DNS, WINS, and host name to match the machine being replaced. Is there a library in .net (C#) which allows me to do this programatically? There are multiple NICs, each which need to be set individually. EDIT Thannk you TimothyP for your example. It got me moving on the right track and the quick reply was awesome. Thanks balexandre. Your code is perfect. I was in a rush and had already adapted the example TimothyP linked to, but I would have loved to have had your code sooner. I've also developed a routine using similar techniques for changing the computer name. I'll post it in the future so subscribe to this questions RSS feed if you want to be informed of the update. I may get it up later today or on Monday after a bit of cleanup.

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  • C# acting weird when reading in values from a file to an array

    - by Whitey
    This is the structure of my file: 1111111111111111111111111 2222222222222222222222222 3333333333333333333333333 4444444444444444444444444 5555555555555555555555555 6666666666666666666666666 7777777777777777777777777 8888888888888888888888888 9999999999999999999999999 0000000000000000000000000 0000000000000000000000000 0000000000000000000000000 0000000000000000000000000 0000000000000000000000000 And this is the code I'm using to read it into an array: using (StreamReader reader = new StreamReader(mapPath)) { string line; for (int i = 0; i < iMapHeight; i++) { if ((line = reader.ReadLine()) != null) { for (int j = 0; j < iMapWidth; j++) { iMap[i, j] = line[j]; } } } } I have done some debugging, and line[j] correctly iterates through each character in the currently read line. The problem lies with iMap[i, j]. After this block of code executes, this is the contents of iMap: - iMap {int[14, 25]} int[,] [0, 0] 49 int [0, 1] 49 int [0, 2] 49 int [0, 3] 49 int [0, 4] 49 int [0, 5] 49 int [0, 6] 49 int [0, 7] 49 int [0, 8] 49 int [0, 9] 49 int [0, 10] 49 int [0, 11] 49 int [0, 12] 49 int [0, 13] 49 int [0, 14] 49 int [0, 15] 49 int [0, 16] 49 int [0, 17] 49 int [0, 18] 49 int [0, 19] 49 int [0, 20] 49 int [0, 21] 49 int [0, 22] 49 int [0, 23] 49 int [0, 24] 49 int [1, 0] 50 int [1, 1] 50 int [1, 2] 50 int [1, 3] 50 int [1, 4] 50 int [1, 5] 50 int [1, 6] 50 int [1, 7] 50 int [1, 8] 50 int [1, 9] 50 int [1, 10] 50 int [1, 11] 50 int [1, 12] 50 int [1, 13] 50 int [1, 14] 50 int [1, 15] 50 int [1, 16] 50 int [1, 17] 50 int [1, 18] 50 int [1, 19] 50 int [1, 20] 50 int [1, 21] 50 int [1, 22] 50 int [1, 23] 50 int [1, 24] 50 int [2, 0] 51 int [2, 1] 51 int [2, 2] 51 int [2, 3] 51 int [2, 4] 51 int [2, 5] 51 int [2, 6] 51 int [2, 7] 51 int [2, 8] 51 int [2, 9] 51 int [2, 10] 51 int [2, 11] 51 int [2, 12] 51 int [2, 13] 51 int [2, 14] 51 int [2, 15] 51 int [2, 16] 51 int [2, 17] 51 int [2, 18] 51 int [2, 19] 51 int [2, 20] 51 int [2, 21] 51 int [2, 22] 51 int [2, 23] 51 int [2, 24] 51 int [3, 0] 52 int [3, 1] 52 int [3, 2] 52 int [3, 3] 52 int [3, 4] 52 int [3, 5] 52 int [3, 6] 52 int [3, 7] 52 int [3, 8] 52 int [3, 9] 52 int [3, 10] 52 int [3, 11] 52 int [3, 12] 52 int [3, 13] 52 int [3, 14] 52 int [3, 15] 52 int [3, 16] 52 int [3, 17] 52 int [3, 18] 52 int [3, 19] 52 int [3, 20] 52 int [3, 21] 52 int [3, 22] 52 int [3, 23] 52 int [3, 24] 52 int [4, 0] 53 int [4, 1] 53 int [4, 2] 53 int [4, 3] 53 int [4, 4] 53 int [4, 5] 53 int [4, 6] 53 int [4, 7] 53 int [4, 8] 53 int [4, 9] 53 int [4, 10] 53 int [4, 11] 53 int [4, 12] 53 int [4, 13] 53 int [4, 14] 53 int [4, 15] 53 int [4, 16] 53 int [4, 17] 53 int [4, 18] 53 int [4, 19] 53 int [4, 20] 53 int [4, 21] 53 int [4, 22] 53 int [4, 23] 53 int [4, 24] 53 int [5, 0] 54 int [5, 1] 54 int [5, 2] 54 int [5, 3] 54 int [5, 4] 54 int [5, 5] 54 int [5, 6] 54 int [5, 7] 54 int [5, 8] 54 int [5, 9] 54 int [5, 10] 54 int [5, 11] 54 int [5, 12] 54 int [5, 13] 54 int [5, 14] 54 int [5, 15] 54 int [5, 16] 54 int [5, 17] 54 int [5, 18] 54 int [5, 19] 54 int [5, 20] 54 int [5, 21] 54 int [5, 22] 54 int [5, 23] 54 int [5, 24] 54 int [6, 0] 55 int [6, 1] 55 int [6, 2] 55 int [6, 3] 55 int [6, 4] 55 int [6, 5] 55 int [6, 6] 55 int [6, 7] 55 int [6, 8] 55 int [6, 9] 55 int [6, 10] 55 int [6, 11] 55 int [6, 12] 55 int [6, 13] 55 int [6, 14] 55 int [6, 15] 55 int [6, 16] 55 int [6, 17] 55 int [6, 18] 55 int [6, 19] 55 int [6, 20] 55 int [6, 21] 55 int [6, 22] 55 int [6, 23] 55 int [6, 24] 55 int [7, 0] 56 int [7, 1] 56 int [7, 2] 56 int [7, 3] 56 int [7, 4] 56 int [7, 5] 56 int [7, 6] 56 int [7, 7] 56 int [7, 8] 56 int [7, 9] 56 int [7, 10] 56 int [7, 11] 56 int [7, 12] 56 int [7, 13] 56 int [7, 14] 56 int [7, 15] 56 int [7, 16] 56 int [7, 17] 56 int [7, 18] 56 int [7, 19] 56 int [7, 20] 56 int [7, 21] 56 int [7, 22] 56 int [7, 23] 56 int [7, 24] 56 int [8, 0] 57 int [8, 1] 57 int [8, 2] 57 int [8, 3] 57 int [8, 4] 57 int [8, 5] 57 int [8, 6] 57 int [8, 7] 57 int [8, 8] 57 int [8, 9] 57 int [8, 10] 57 int [8, 11] 57 int [8, 12] 57 int [8, 13] 57 int [8, 14] 57 int [8, 15] 57 int [8, 16] 57 int [8, 17] 57 int [8, 18] 57 int [8, 19] 57 int [8, 20] 57 int [8, 21] 57 int [8, 22] 57 int [8, 23] 57 int [8, 24] 57 int [9, 0] 48 int [9, 1] 48 int [9, 2] 48 int [9, 3] 48 int [9, 4] 48 int [9, 5] 48 int [9, 6] 48 int [9, 7] 48 int [9, 8] 48 int [9, 9] 48 int [9, 10] 48 int [9, 11] 48 int [9, 12] 48 int [9, 13] 48 int [9, 14] 48 int [9, 15] 48 int [9, 16] 48 int [9, 17] 48 int [9, 18] 48 int [9, 19] 48 int [9, 20] 48 int [9, 21] 48 int [9, 22] 48 int [9, 23] 48 int [9, 24] 48 int [10, 0] 48 int [10, 1] 48 int [10, 2] 48 int [10, 3] 48 int [10, 4] 48 int [10, 5] 48 int [10, 6] 48 int [10, 7] 48 int [10, 8] 48 int [10, 9] 48 int [10, 10] 48 int [10, 11] 48 int [10, 12] 48 int [10, 13] 48 int [10, 14] 48 int [10, 15] 48 int [10, 16] 48 int [10, 17] 48 int [10, 18] 48 int [10, 19] 48 int [10, 20] 48 int [10, 21] 48 int [10, 22] 48 int [10, 23] 48 int [10, 24] 48 int [11, 0] 48 int [11, 1] 48 int [11, 2] 48 int [11, 3] 48 int [11, 4] 48 int [11, 5] 48 int [11, 6] 48 int [11, 7] 48 int [11, 8] 48 int [11, 9] 48 int [11, 10] 48 int [11, 11] 48 int [11, 12] 48 int [11, 13] 48 int [11, 14] 48 int [11, 15] 48 int [11, 16] 48 int [11, 17] 48 int [11, 18] 48 int [11, 19] 48 int [11, 20] 48 int [11, 21] 48 int [11, 22] 48 int [11, 23] 48 int [11, 24] 48 int [12, 0] 48 int [12, 1] 48 int [12, 2] 48 int [12, 3] 48 int [12, 4] 48 int [12, 5] 48 int [12, 6] 48 int [12, 7] 48 int [12, 8] 48 int [12, 9] 48 int [12, 10] 48 int [12, 11] 48 int [12, 12] 48 int [12, 13] 48 int [12, 14] 48 int [12, 15] 48 int [12, 16] 48 int [12, 17] 48 int [12, 18] 48 int [12, 19] 48 int [12, 20] 48 int [12, 21] 48 int [12, 22] 48 int [12, 23] 48 int [12, 24] 48 int [13, 0] 48 int [13, 1] 48 int [13, 2] 48 int [13, 3] 48 int [13, 4] 48 int [13, 5] 48 int [13, 6] 48 int [13, 7] 48 int [13, 8] 48 int [13, 9] 48 int [13, 10] 48 int [13, 11] 48 int [13, 12] 48 int [13, 13] 48 int [13, 14] 48 int [13, 15] 48 int [13, 16] 48 int [13, 17] 48 int [13, 18] 48 int [13, 19] 48 int [13, 20] 48 int [13, 21] 48 int [13, 22] 48 int [13, 23] 48 int [13, 24] 48 int Sorry for the lame formatting, but it's huge :P I have no idea where it's getting these values from, does anyone have an explanation? Thanks :)

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  • How to call a new thread from button click

    - by Lynnooi
    Hi, I'm trying to call a thread on a button click (btn_more) but i cant get it right. The thread is to get some data and update the images. The problem i have is if i only update 4 or 5 images then it works fine. But if i load more than 5 images i will get a force close. At times when the internet is slow I will face the same problem too. Can please help me to solve this problem or provide me some guidance? Here is the error i got from LogCat: 04-19 18:51:44.907: ERROR/AndroidRuntime(1034): Uncaught handler: thread main exiting due to uncaught exception 04-19 18:51:44.927: ERROR/AndroidRuntime(1034): java.lang.NullPointerException 04-19 18:51:44.927: ERROR/AndroidRuntime(1034): at mobile9.android.gallery.GalleryWallpapers.setWallpaperThumb(GalleryWallpapers.java:383) 04-19 18:51:44.927: ERROR/AndroidRuntime(1034): at mobile9.android.gallery.GalleryWallpapers.access$4(GalleryWallpapers.java:320) 04-19 18:51:44.927: ERROR/AndroidRuntime(1034): at mobile9.android.gallery.GalleryWallpapers$1.handleMessage(GalleryWallpapers.java:266) 04-19 18:51:44.927: ERROR/AndroidRuntime(1034): at android.os.Handler.dispatchMessage(Handler.java:99) 04-19 18:51:44.927: ERROR/AndroidRuntime(1034): at android.os.Looper.loop(Looper.java:123) 04-19 18:51:44.927: ERROR/AndroidRuntime(1034): at android.app.ActivityThread.main(ActivityThread.java:4310) 04-19 18:51:44.927: ERROR/AndroidRuntime(1034): at java.lang.reflect.Method.invokeNative(Native Method) 04-19 18:51:44.927: ERROR/AndroidRuntime(1034): at java.lang.reflect.Method.invoke(Method.java:521) 04-19 18:51:44.927: ERROR/AndroidRuntime(1034): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 04-19 18:51:44.927: ERROR/AndroidRuntime(1034): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 04-19 18:51:44.927: ERROR/AndroidRuntime(1034): at dalvik.system.NativeStart.main(Native Method) My Code: public class GalleryWallpapers extends Activity implements Runnable { public static String MODEL = android.os.Build.MODEL ; private static final String rootURL = "http://www.uploadhub.com/mobile9/gallery/c/"; private int wallpapers_count = 0; private int ringtones_count = 0; private int index = 0; private int folder_id; private int page; private int page_counter = 1; private String family; private String keyword; private String xmlURL = ""; private String thread_op = "xml"; private ImageButton btn_back; private ImageButton btn_home; private ImageButton btn_filter; private ImageButton btn_search; private TextView btn_more; private ProgressDialog pd; GalleryExampleHandler myExampleHandler = new GalleryExampleHandler(); Context context = GalleryWallpapers.this.getBaseContext(); Drawable image; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); MODEL = "HTC Legend"; // **needs to be remove after testing** try { MODEL = URLEncoder.encode(MODEL,"UTF-8"); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.gallerywallpapers); Bundle b = this.getIntent().getExtras(); family = b.getString("fm").trim(); folder_id = Integer.parseInt(b.getString("fi")); keyword = b.getString("kw").trim(); page = Integer.parseInt(b.getString("page").trim()); WindowManager w = getWindowManager(); Display d = w.getDefaultDisplay(); final int width = d.getWidth(); final int height = d.getHeight(); xmlURL = rootURL + "wallpapers/1/?output=rss&afm=wallpapers&mdl=" + MODEL + "&awd=" + width + "&aht=" + height; if (folder_id > 0) { xmlURL = xmlURL + "&fi=" + folder_id; } pd = ProgressDialog.show(GalleryWallpapers.this, "", "Loading...", true, false); Thread thread = new Thread(GalleryWallpapers.this); thread.start(); btn_more = (TextView) findViewById(R.id.btn_more); btn_more.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { myExampleHandler.filenames.clear(); myExampleHandler.authors.clear(); myExampleHandler.duration.clear(); myExampleHandler.fileid.clear(); btn_more.setBackgroundResource(R.drawable.btn_more_click); page = page + 1; thread_op = "xml"; xmlURL = rootURL + "wallpapers/1/?output=rss&afm=wallpapers&mdl=" + MODEL + "&awd=" + width + "&aht=" + height; xmlURL = xmlURL + "&pg2=" + page; index = 0; pd = ProgressDialog.show(GalleryWallpapers.this, "", "Loading...", true, false); Thread thread = new Thread(GalleryWallpapers.this); thread.start(); } }); } public void run() { if(thread_op.equalsIgnoreCase("xml")){ readXML(); } else if(thread_op.equalsIgnoreCase("getImg")){ getWallpaperThumb(); } handler.sendEmptyMessage(0); } private Handler handler = new Handler() { @Override public void handleMessage(Message msg) { int count = 0; if (!myExampleHandler.filenames.isEmpty()){ count = myExampleHandler.filenames.size(); } count = 6; if(thread_op.equalsIgnoreCase("xml")){ pd.dismiss(); thread_op = "getImg"; btn_more.setBackgroundResource(R.drawable.btn_more); } else if(thread_op.equalsIgnoreCase("getImg")){ setWallpaperThumb(); index++; if (index < count){ Thread thread = new Thread(GalleryWallpapers.this); thread.start(); } } } }; private void readXML(){ if (xmlURL.length() != 0) { try { /* Create a URL we want to load some xml-data from. */ URL url = new URL(xmlURL); /* Get a SAXParser from the SAXPArserFactory. */ SAXParserFactory spf = SAXParserFactory.newInstance(); SAXParser sp = spf.newSAXParser(); /* Get the XMLReader of the SAXParser we created. */ XMLReader xr = sp.getXMLReader(); /* * Create a new ContentHandler and apply it to the * XML-Reader */ xr.setContentHandler(myExampleHandler); /* Parse the xml-data from our URL. */ xr.parse(new InputSource(url.openStream())); /* Parsing has finished. */ /* * Our ExampleHandler now provides the parsed data to * us. */ ParsedExampleDataSet parsedExampleDataSet = myExampleHandler .getParsedData(); } catch (Exception e) { //showDialog(DIALOG_SEND_LOG); } } } private void getWallpaperThumb(){ int i = this.index; if (!myExampleHandler.filenames.elementAt(i).toString().equalsIgnoreCase("")){ image = ImageOperations(context, myExampleHandler.thumbs.elementAt(i).toString(), "image.jpg"); } } private void setWallpaperThumb(){ int i = this.index; if (myExampleHandler.filenames.elementAt(i).toString() != null) { String file_info = myExampleHandler.filenames.elementAt(i).toString(); String author = "\nby " + myExampleHandler.authors.elementAt(i).toString(); final String folder = myExampleHandler.folder_id.elementAt(folder_id).toString(); final String fid = myExampleHandler.fileid.elementAt(i).toString(); ImageView imgView = new ImageView(context); TextView tv_filename = null; TextView tv_author = null; switch (i + 1) { case 1: imgView = (ImageView) findViewById(R.id.image1); tv_filename = (TextView) findViewById(R.id.filename1); tv_author = (TextView) findViewById(R.id.author1); break; case 2: imgView = (ImageView) findViewById(R.id.image2); tv_filename = (TextView) findViewById(R.id.filename2); tv_author = (TextView) findViewById(R.id.author2); break; case 3: imgView = (ImageView) findViewById(R.id.image3); tv_filename = (TextView) findViewById(R.id.filename3); tv_author = (TextView) findViewById(R.id.author3); break; case 4: . . . . . case 10: imgView = (ImageView) findViewById(R.id.image10); tv_filename = (TextView) findViewById(R.id.filename10); tv_author = (TextView) findViewById(R.id.author10); break; } if (image.getIntrinsicHeight() > 0) { imgView.setImageDrawable(image); } else { imgView.setImageResource(R.drawable.default_wallpaper); } tv_filename.setText(file_info); tv_author.setText(author); imgView.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { // Perform action on click } }); } } private Drawable ImageOperations(Context ctx, String url, String saveFilename) { try { InputStream is = (InputStream) this.fetch(url); Drawable d = Drawable.createFromStream(is, "src"); return d; } catch (MalformedURLException e) { e.printStackTrace(); return null; } catch (IOException e) { e.printStackTrace(); return null; } } }

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  • How do you remove invalid hexadecimal characters from an XML-based data source prior to constructing

    - by Oppositional
    Is there any easy/general way to clean an XML based data source prior to using it in an XmlReader so that I can gracefully consume XML data that is non-conformant to the hexadecimal character restrictions placed on XML? Note: The solution needs to handle XML data sources that use character encodings other than UTF-8, e.g. by specifying the character encoding at the XML document declaration. Not mangling the character encoding of the source while stripping invalid hexadecimal characters has been a major sticking point. The removal of invalid hexadecimal characters should only remove hexadecimal encoded values, as you can often find href values in data that happens to contains a string that would be a string match for a hexadecimal character. Background: I need to consume an XML-based data source that conforms to a specific format (think Atom or RSS feeds), but want to be able to consume data sources that have been published which contain invalid hexadecimal characters per the XML specification. In .NET if you have a Stream that represents the XML data source, and then attempt to parse it using an XmlReader and/or XPathDocument, an exception is raised due to the inclusion of invalid hexadecimal characters in the XML data. My current attempt to resolve this issue is to parse the Stream as a string and use a regular expression to remove and/or replace the invalid hexadecimal characters, but I am looking for a more performant solution.

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  • jQuery.closest(); traversing down the DOM not up

    - by Alex
    Afternoon peoples. I am having a bit of a nightmare traversing a DOM tree properly. I have the following markup <div class="node" id="first-wh"> <div class="content-heading has-tools"> <div class="tool-menu" style="position: relative"> <span class="menu-open stepper-down"></span> <ul class="tool-menu-tools" style="display:none;"> <li><img src="/resources/includes/images/layout/tools-menu/edit22.png" /> Edit <input type="hidden" class="variables" value="edit,hobbies,text,/theurl" /></li> <li>Menu 2</li> <li>Menu 3</li> </ul> </div> <h3>Employment History</h3></div> <div class="content-body editable disabled"> <h3 class="dates">1st January 2010 - 10th June 2010</h3> <h3>Company</h3> <h4>Some Company</h4> <h3>Job Title</h3> <h4>IT Manager</h4> <h3>Job Description</h3> <p class="desc">I headed up the IT department for all things concerning IT and infrastructure</p> <h3>Roles &amp; Responsibilities</h3> <p class="desc">It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here, content here', making it look like readable English. Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for 'lorem ipsum' will uncover many web sites still in their infancy. Various versions have evolved over the years, sometimes by accident, sometimes on purpose (injected humour and the like).</p> </div> <div class="content-body edit-node edit-node-hide"> <input class="variables" type="hidden" value="id,function-id" /> <h3 class="element-title">Employment Dates</h3> <span class="label">From:</span> <input class="edit-mode date date-from" type="text" value="date" /> <span class="label">To:</span> <input class="edit-mode date date-to" type="text" value="date" /> <h3 class="element-title">Company</h3> <input class="edit-mode" type="text" value="The company I worked for" /> <h3 class="element-title">Job Title</h3> <input class="edit-mode" type="text" value="My job title" /> <h3 class="element-title">Job Description</h3> <textarea class="edit-mode" type="text">The Job Title</textarea> <h3 class="element-title">Roles &amp; Responsibilities</h3> <textarea class="edit-mode" type="text">It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here, content here', making it look like readable English. Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for 'lorem ipsum' will uncover many web sites still in their infancy. Various versions have evolved over the years, sometimes by accident, sometimes on purpose (injected humour and the like).</textarea> <div class="node-actions"> <input type="checkbox" class="checkdisable" value="This is a checkbox"/>This element is visible .<br /> <input type="submit" class="account-button save" value="Save" /> <input type="submit" class="account-button cancel" value="Cancel" /></div> </div></div> ... And I am trying to traverse from input.save at the bottom right the way up to div.node... This all works well with one copy of the markup but if I duplicate it (obvisouly changing the ID of the uppermost div.node and use jQuery.closest('div.node') for the upper of the div.node's it will return the element below it not the element above it (which is the right one). I've tried using parents() but that also has it's caveats. Is there some kind of contexyt that can be attached to closest to make it go up and not down? or is there a better way to do this. jQuery code below. $(".save").click(function(){ var element=$(this); var enodes=element.parents('.edit-node').find('input.variables'); var variables=enodes.val(); var onode=element.closest('div.node').find('.editable'); var enode=element.closest('div.node').find('.edit-node-hide'); var vnode=element.closest('div.node-actions').find('input.checkdisable'); var isvis=(vnode.is(":checked")) ? onode.removeClass('disabled') : onode.addClass('disabled'); onode.slideDown(200); enode.fadeOut(100); }); Thanks in advance. Alex P.S It seems that stackoverflow has done something weird to the markup! - I just triple checked it and it is fine but for some reason it's concate'd it below

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  • Custom .NET DSL

    - by Dmitriy Nagirnyak
    Hi, I am thinking about implementing a templating engine using only the plain C#/.NET 4 syntax with the benefit of static typing. Then on top of that templating language we could create Domain Specific Languages (let's say HTML4, XHTML, HTML5, RSS, Atom, Multipart Emails and so on). One of the best DSLs in .NET 4 (if not only one) is SharpDOM. It implements HTML-specific DSL. Looking at SharpDOM, I am really impressed of what you can do using .NET (4). So I believe there are some not-so-well-known ways for implementing custom DSLs in .NET 4. Possibly not as well as in Ruby, but still. So my the question would be: what are the C# (4) specific syntax features that can be used for implementing custom DSLs? Examples I can think of right now: // HTML - doesn't look tooo readable :) div(clas: "head", ul(clas: "menu", id: "main-menu", () => { foreach(var item in allItems) { li(item.Name) } }) // See how much noise it has with all the closing brackets? ) // Plain text (Email or something) - probably too simple Line("Dear {0}", user.Name); Line("You have been kicked off from this site"); For me it is really hard to come up with the syntax with least amount of noise. Please NOTE that I am not talking about another language (Boo, IronRuby etc), neither I am not talking about different templating engines (NHaml, Spark, StringTemplate etc). Thanks, Dmitriy.

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  • Adding a dynamic image to UITable View Cell

    - by Graeme
    Hi, I have a table in which I want a dynamic image to load in at the left-hand side. The table needs to use an IF statement to select the appropriate image from the "Resources" folder, and needs to be based upon [dog types]. The [dog types] is extracted from an RSS feed, and so the image in the table cell needs to match the each cell's [dog types] tag. Update: See code below for what I'm looking to do (only below it's for earthquakes, for me its pictures of dogs). I suspect I need to use - (UIImage *)imageForTypes:(NSString *)types { to do such a thing. Thanks. Updated code: This is for Apple's Earthquake sample but does exactly what I need to do. It matches images to the severity (2.0, 3.0, 4.0, 5.0 etc.) of every earthquake to the magnitude. - (UIImage *)imageForMagnitude:(CGFloat)magnitude { if (magnitude >= 5.0) { return [UIImage imageNamed:@"5.0.png"]; } if (magnitude >= 4.0) { return [UIImage imageNamed:@"4.0.png"]; } if (magnitude >= 3.0) { return [UIImage imageNamed:@"3.0.png"]; } if (magnitude >= 2.0) { return [UIImage imageNamed:@"2.0.png"]; } return nil; } and under - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath magnitudeImage.image = [self imageForMagnitude:earthquake.magnitude];

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  • What is the correct way to implement a massive hierarchical, geographical search for news?

    - by Philip Brocoum
    The company I work for is in the business of sending press releases. We want to make it possible for interested parties to search for press releases based on a number of criteria, the most important being location. For example, someone might search for all news sent to New York City, Massachusetts, or ZIP code 89134, sent from a governmental institution, under the topic of "traffic". Or whatever. The problem is, we've sent, literally, hundreds of thousands of press releases. Searching is slow and complex. For example, a press release sent to Queens, NY should show up in the search I mentioned above even though it wasn't specifically sent to New York City, because Queens is a subset of New York City. We may also want to implement "and" and "or" and negation and text search to the query to create complex searches. These searches also have to be fast enough to function as dynamic RSS feeds. I really don't know anything about search theory, or how it's properly done. The way we are getting by right now is using a data mart to store the locations the releases were sent to in a single table. However, because of the subset thing mentioned above, the data mart is gigantic with millions of rows. And we haven't even implemented cities yet, and there are about 50,000 cities in the United States, which will exponentially increase the size of the data mart by so much I'm afraid it just won't work anymore. Anyway, I realize this is not a simple question and there won't be a "do this" answer. However, I'm hoping one of you can point me in the right direction where I can learn about how massive searches are done? Because I really know nothing about it. And such a search engine is turning out to be incredibly difficult to make. Thanks! I know there must be a way because if Google can search the entire internet we must be able to search our own database :-)

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  • PCRE/PHP regex not matching last "item"

    - by superbarney
    Here's a regex that I've cobbled up: /(.*={76}\s)?\s*(.*?)\s\-\-\s(\d{2}\/\d{2}\-\d{2}\s\d{2}:\d{2})\s\s(.*?)\s(http:\/\/service.*?)\s(\-{76})/is and here's the text I will be parsing: http://p.linode.com/7015 and here's the replacement for the matched text: <item>\n\t<title>$2</title>\n\t<pubDate>$pubDate</pubDate>\n\t<description>$4</description>\n\t<link>$5</link>\n</item>\n\n I have almost come up with a regex needed to parse a block of text into RSS 2.0 XML markup. I've tested it with RegExr and RegexBuddy and it works perfectly except for the last "item" where there is no line breaks after the link (Line 269). In short, the problem is the "iProperty" article in the text is not matched. Any regex gurus willing to help me troubleshoot what's wrong? I've tried /(.*={76}\s)?\s*(.*?)\s\-\-\s(\d{2}\/\d{2}\-\d{2}\s\d{2}:\d{2})\s\s(.*?)\s(http:\/\/service.*?)\s*(\-{76})/is Here's the output that I get: http://p.linode.com/7016 but that didn't work as I expected (i.e. a newline would be optional). Thanks!

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  • Extract a pattern from the output of curl

    - by allentown
    I would like to use curl, on the command line, to grab a url, pipe it to a pattern, and return a list of urls that match that pattern. I am running into problems with greedy aspects of the pattern, and can not seem to get past it. Any help on this would be apprecaited. curl http://www.reddit.com/r/pics/ | grep -ioE "http://imgur\.com/.+(jpg|jpeg|gif|png)" So, grab the data from the url, which returns a mess of html, which may need some linebreaks somehow replaced in, onless the regex can return more than one pattern in a single line. The patter is pretty simple, any string that matches... starts with http://imgur.com/ has A-Z a-z 0-9 (maybe some others) and is so far, 5 chars long, 8 should cover it forever if I wanted to limit that aspect of the patter, which I don't ends in a .grraphic_file_format_extention (jpg, jpeg, gif, png) Thats about it, at that url, with default settings, I should generally get back a good set of images. I would not be objectionable to using the RSS feel url for the same page, it may be easier to parse actually. Thanks everyone!

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