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• Image rendering on browser or temporary images?

  - by Muralha

  I'm trying to make a statistics page where it will show several data and charts. The charts need to be pictures so that the user can save it/drag-and-drop to his/her personal reports. I'm using Gruff Graphs for Ruby to produce the charts but I don't know the best way to display the results safe and protected. Some of my ideas/tries are: save the chart to a file (jpg, png)? problem: data is available to anyone (don't have access to cron, to delete data from time to time) render in the browser (has to work on IE)? Use javascript (Raphaël—JavaScript Library) or Google API and output a PDF report (need plugin or gem, right)? use send_data? i've tried to output other way than inline, because I needs to show other data, is it possible? Thanks for any help.

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• Using C preprocessor to construct a string literal for scanf?

  - by Brett

  I'm attempting to create an sscanf string literal to aid in buffer overrun prevention in C99. The goal is something like: #define MAX_ARG_LEN 16 char arg[MAX_ARG_LEN] = ""; if (sscanf(arg, "%"(MAX_ARG_LEN-1)"X", &input) > 0) The obvious "manual" solution is something like: #define MAX_ARG_LEN 16 #define MAX_ARG_CHARS "15" char arg[MAX_ARG_LEN] = ""; if (sscanf(arg, "%"MAX_ARG_CHARS"X", &input) > 0) However, I would prefer something to automatically generate "%15X" given a buffer size of 16. This link is almost works for my application: http://stackoverflow.com/questions/240353/convert-a-preprocessor-token-to-a-string but it does not handle the -1. Suggestions?

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• Find the xmlHttpRequest resource in aspx page

  - by DJStroky

  I'm trying to find an xmlHttpRequest or similar resource that I can query directly to obtain an xml file for my own purposes. At this site it is possible to browse a Google Map mashup with markers. Unfortunately it is only possible to view all markers at a small view range, whereas I simply want to obtain all the information at once for the entire state. Using the firebug console in firefox I can enter the following javascript line to obtain the xml that I desire: document.getElementById("stationXML").value I tracked this document element down to an <input> tag, but I can't figure out how that input is set. Thanks in advance for your help!

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• Java - Parsing a Date from a String

  - by Yatendra Goel

  I want to parse a java.util.Date from a String. I tried the following code but got unexpected output: Date getDate() { Date date = null; SimpleDateFormat sdf = new SimpleDateFormat("EEE MMM dd"); try { date = sdf.parse("Sat May 11"); } catch (ParseException ex) { Logger.getLogger(URLExtractor.class.getName()).log(Level.SEVERE, null, ex); return null; } return date; } When I run the above code, I got the following output: Mon May 11 00:00:00 IST 1970

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• Python UTF-16 encoding hex representation

  - by Romeno

  I have a string in Python 2.7.2 say u"\u0638". When I write it to file: f = open("J:\\111.txt", "w+") f.write(u"\u0638".encode('utf-16')) f.close() In hex it looks like: FF FE 38 06 When i print such a string to stdout i will see: '\xff\xfe8\x06'. The querstion: Where is \x38 in the string output to stdout? In other words why the string output to stdout is not '\xff\xfe\x38\x06'? If I write the string to file twice: f = open("J:\\111.txt", "w+") f.write(u"\u0638".encode('utf-16')) f.write(u"\u0638".encode('utf-16')) f.close() The hex representation in file contains byte order mark (BOM) \xff\xfe twice: FF FE 38 06 FF FE 38 06 I wonder what is the techique to avoid writting BOM in UTF-16 encoded strings?

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• Double-Escaped Unicode Javascript Issue

  - by Jeffrey Winter

  I am having a problem displaying a Javascript string with embedded Unicode character escape sequences (\uXXXX) where the initial "\" character is itself escaped as "&#92;" What do I need to do to transform the string so that it properly evaluates the escape sequences and produces output with the correct Unicode character? For example, I am dealing with input such as: "this is a &#92;u201ctest&#92;u201d"; attempting to decode the "&#92;" using a regex expression, e.g.: var out = text.replace('/&#92;/g','\'); results in the output text: "this is a \u201ctest\u201d"; that is, the Unicode escape sequences are displayed as actual escape sequences, not the double quote characters I would like.

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• Finding the actual runtime call tree of a Java Program

  - by Chathuranga Chandrasekara

  Suppose I have a big program that consists of hundreds of methods in it. And according to the nature of input the program flow is getting changed. Think I want to make a change to the original flow. And it is big hassle to find call hierarchy/ references and understand the flow. Do I have any solution for this within Eclipse? Or a plugin? As an example, I just need a Log of method names that is in order of time. Then I don't need to worry about the methods that are not relevant with my "given input" Update : Using debug mode in eclipse or adding print messages are not feasible. The program is sooooo big. :)

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• JavaScript check field value based on variable value

  - by Nikita Sumeiko

  I have an anchor like this: <a href="#" rel="1 4 7 18 ">Anchor</a> Where 'rel' attribute values are ids of some items. Than I have a form with an input, where user should type an id and click submit button. On submit button click I need to check the value of input like this: var value = $('a').attr('rel'); if ( value == '1' || value == '4' || value == '7' || value == '18') { // however I need the line above are created dynamically based on 'value' var alert('The id exists'); return false; } else { return true; } So, the question is how to create a line below dynamically based on anchor 'rel' attribute values?! This is the line: if ( value == '1' || value == '4' || value == '7' || value == '18') {

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• How can I parse this configuration file format (allowing comments) in Perl?

  - by rockyurock

  I am reading some parameters (from user input) from a .txt file and want to make sure that my script could read it even a space or tab is left before that particular parameter by user. Also if I want to add a comment for each parameter followed by # , after the parameter (e.g 7870 # this is default port number) to let the user know about the parameter How can I achieve it in same file? Right now, I am using split /\|\s/. Code: $data_file="config.txt"; open(RAK, $data_file)|| die("Could not open file!"); @raw_data=<RAK>; @Ftp_Server =split(/\|\s/,$raw_data[32]); config.txt (user input file) PING_TTL | 1 CLIENT_PORT | 7870 FTP_SERVER | 192.162.522.222 Could any body suggest me a robust way to do it? /rocky

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• PHP uploads file - enctype="multipart/form-data" issue

  - by user147685

  Hi all, I have this upload code. there are no problem running it individually, but when i try to add into my other codes, it did not get the $_files parameter. Im guessing it was becoz of enctype="multipart/form-data" in the form tag, based on this post: http://stackoverflow.com/questions/1695246/why-file-upload-didnt-work-without-enctype the enctype is needed. SO my problem is, how can i do upload files without concern to this? can we juz change the code structure so that it will be compatible with other codes? if($_POST['check']){ $faillampiran=$_POST['faillampiran']; $file=$_FILES['faillampiran']["name"]; $fileSize = $_FILES['faillampiran']['size']; $fileType = $_FILES['faillampiran']['type']; if ($_FILES["faillampiran"]["error"] > 0 ) { echo "Return Code: " . $_FILES["faillampiran"]["error"] . "<br />"; } else { move_uploaded_file($_FILES["faillampiran"]["tmp_name"],"upload/" . $_FILES["faillampiran"]["name"]); echo '<table align = "center">'; echo "<tr><td>"; echo "Your file has been successfully stored."; echo "</td></tr>"; echo '</table>'; } } ?> <form method="post" name="form1" id="form1" enctype="multipart/form-data"> <tr><td></td><td><input type="hidden" name="MAX_FILE_SIZE" value=""> </td> </tr> <tr><td> Please choose a file</td><td>:</td></tr> <tr> <input type="file" size="50" name="faillampiran" alt="faillampiran" id="faillampiran" 1value= "<?=$faillampiran;?>" /> <tr align = "center"><td colspan = "3"><input type="submit" value="Hantar" name="check"/></td></tr> </tr></form> thank you.

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• Having to hit the site login button twice after first turning on computer

  - by John

  Hello, The code below is for a login that I'm using. It works fine, but when I first try logging in after turning on my computer, it only works the second time that I hit the "Login" button. Any idea how I can make it not require hitting the "Login" button twice in this situation? Thanks in advance, John function isLoggedIn() { if (session_is_registered('loginid') && session_is_registered('username')) { return true; // the user is loged in } else { return false; // not logged in } return false; } if (!isLoggedIn()) { if (isset($_POST['cmdlogin'])) { if (checkLogin($_POST['username'], $_POST['password'])) { show_userbox(); } else { echo "Incorrect Login information !"; show_loginform(); } } else { show_loginform(); } } else { show_userbox(); } function show_loginform($disabled = false) { echo '<form name="login-form" id="login-form" method="post" action="./index.php"> <div class="usernameformtext"><label title="Username">Username: </label></div> <div class="usernameformfield"><input tabindex="1" accesskey="u" name="username" type="text" maxlength="30" id="username" /></div> <div class="passwordformtext"><label title="Password">Password: </label></div> <div class="passwordformfield"><input tabindex="2" accesskey="p" name="password" type="password" maxlength="15" id="password" /></div> <div class="registertext"><a href="http://www...com/sandbox/register.php" title="Register">Register</a></div> <div class="lostpasswordtext"><a href="http://www...com/sandbox/lostpassword.php" title="Lost Password">Lost password?</a></div> <p class="loginbutton"><input tabindex="3" accesskey="l" type="submit" name="cmdlogin" value="Login" '; if ($disabled == true) { echo 'disabled="disabled"'; } echo ' /></p></form>'; } EDIT: Here is another function that is used. function isLoggedIn() { if (session_is_registered('loginid') && session_is_registered('username')) { return true; // the user is loged in } else { return false; // not logged in } return false; }

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• Console-like control that allows full control over individual text formatting

  - by Rich.Carpenter

  I'm tinkering with writing a simple text-based role-playing game. I would like to use WinForms, and utilize WinForm controls for the UI and simple text for the output. The catch is, I would like to have complete control over the formatting of the individual text - some words being different colors, etc. A simple console control would suffice, as that would provide control over text colors, but it would be nice to also be able to change style, font and size. Less important: it would be nice to have complete control over where text appears in the control through a coordinate system, as with DOS windows of old. I'd appreciate suggestions on the best method of implementing this. Perhaps there is a better method I had not considered for rendering the output of a text-based game.

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• Issue on passing a checkbox set to an AppEngine script through jQuery Ajax/Json

  - by Jorge

  I have a set of checkboxes with multiple choice allowed. I parse the set this way: if ($("input[name='route_day']:checked").length > 0) { $("input[name='route_day']:checked").each(function(){ if(this.value != null) route_days_hook.push(this.value); }); dataTrap.route_days = $.JSON.encode(route_days_hook); } ...and pull the whole dataTrap to an AppEngine Python script via jQuery ajax. However, the Python script just bugs. If i change dataTrap.route_days value to a string instead of the JSON encoded object, everything works fine. My question is: how can i pass a checkbox set to the script using Ajax and still be able to iterate over it on the script?

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• Problems with creating XML with DOMDocument in PHP

  - by maralbjo

  The below code is fetched from php.net (http://docs.php.net/manual/en/domdocument.savexml.php). My problem is - it doesn't work. My only output from this is: "Saving all the document: Saving only the title part:". What am I missing here? $doc = new DOMDocument('1.0'); // we want a nice output $doc-formatOutput = true; $root = $doc-createElement('book'); $root = $doc-appendChild($root); $title = $doc-createElement('title'); $title = $root-appendChild($title); $text = $doc-createTextNode('This is the title'); $text = $title-appendChild($text); echo "Saving all the document:\n"; echo $doc-saveXML() . "\n"; echo "Saving only the title part:\n"; echo $doc-saveXML($title);

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• Displaying untrusted HTML using PHP

  - by esryl

  I have a read a number of excellent questions and answers today about dealing with user input. I am now using htmlspecialchars() to display user data in the create/edit forms (but accepting the raw input via prepared PDO statements into my database). The main question I know have is, what do you do when you are allowing the user to submit HTML which will then be displayed to the public. Obviously htmlspecialchars() is no longer suitable as it just encodes the tags and renders the content useless for purpose. My application is currently accepting HTML from an admin for product descriptions. This would allow a malicious admin to inject potentially unsafe data into public facing pages. How do people cope with this?

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• Do I correctly understand what a class is?

  - by Matt

  I've had trouble finding a clear, concise laymans definition of a class. Usually, they give general ideas without specifically spelling it out, and I'm wondering if I'm understanding this correctly. As I understand it, a class is the set of code that controls an object. For example, in an app that has a button for 'Yes' and a button for 'No', and a text box for output, the code that tells the computer what to do when the user uses the Yes button is one class, the code for hitting No is another class, and an object is the two buttons and what they do together to influence the output box. Am I right, or am I confusing terms here? Thanks

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• git: programmatically know by how much the branch is ahead/behind a remote branch

  - by Olivier

  I would like to extract the information that is printed after a github status, which looks like: # On branch master # Your branch is ahead of 'origin/master' by 2 commits. Of course I can parse the output of git status but this is not recommended since this human readable output is liable to change. There are two problems: How to know the remote tracked branch? It is often origin/branch but need not be. How to get the numbers? How to know whether it is ahead/behind? By how many commits? And what about the diverged branch case?

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• autocomplete attribute is not passing XHTML 1.0 Transitional validation, why?

  - by rsturim

  I'm trying to cleanup my xhtml validation -- I'm running my pages through the W3C validator. For some puzzling reason it's not passing on input fields with the autocomplete="off" attribute: <input name="kwsearch" id="sli_search_1" type="text" autocomplete="off" onfocus="if(this.defaultValue==this.value) this.value='';" onblur="if(this.value=='')this.value=this.defaultValue;" class="searchbox" value="Search" /> I'm using this doctype: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> And this is the validation error: Line 410, Column 81: there is no attribute "autocomplete" …li_search_1" type="text" autocomplete="off" onfocus="if(this.defaultValue==thi… I thought this was okay with the W3C -- but, maybe it's still in "submission" phase? http://www.w3.org/Submission/web-forms2/#autocomplete Thoughts?

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• How to remove code from HTML string?

  - by TruMan1

  I have a variable that has this string: <DIV><SPAN style="FONT-FAMILY: Tahoma; FONT-SIZE: 10pt">[If the confirmation is active the subscriber will receive this email after succesfully confirming. If not, this will be the first and only email he will receive.]</SPAN></DIV> <p align=center> <input class=fieldbox10 type = 'button' name = 'button' value = 'Close' onclick = "window.close()"> </p> How do I remove the below string without worrying about spaces via Javascript (or jQuery)? <p align=center> <input class=fieldbox10 type = 'button' name = 'button' value = 'Close' onclick = "window.close()"> </p>

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• Multiple webservices in 1 ear/ejb project

  - by arinte

  We have a ejb project (which is in an ear) that shares quite a bit of code between 2 webservices. The classes that the webservices expose are in different packages but they have different names. For example Web service1 com.d.trunk.Response WS1.process( com.d.trunk.Input ); Web service2 com.d.fwd.Response WS2.process( com.d.fwd.Input ); So this builds fine, but when we deploy and we view the generated wsdl and the generated xsd things begin to go a bit haywire. So if we look at web service 2 it generates the wsdl and xsd as we expect. But when we look at ws 1's wsdl for some reason it includes the xsd from the ws 2 and its own xsd. And its own xsd are missing key types like the Response type. Is this an issue because we have 2 web services in 1 ejb project? Or some config issue with Netbeans 6.7.1 and glassfish v2?

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• Caching Profiles web.config vs IIS

  - by Lieven Cardoen

  What is the difference between configuring a Caching Profile in Web.Config and configuring it in IIS? If you have this in Web.Config <caching> <outputCache enableOutputCache="true" /> <outputCacheSettings> <outputCacheProfiles> <add duration="14800" enabled="true" varyByParam="*" name="AssetCacheProfile" /> </outputCacheProfiles> </outputCacheSettings> </caching> And nothing configured in IIS in the Output Caching, will it work? And what if you add all the extensions I use in Output Caching in IIS, what does that change? It's a aspx page RetrieveBlob.aspx that uses this Caching Profile: <%@ OutputCache CacheProfile="AssetCacheProfile" %> <%@ Page Language="C#" AutoEventWireup="true" CodeFile="RetrieveBlob.aspx.cs" Inherits="RetrieveBlob" %>

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• .net c# text box date with mask - setup

  - by flavour404

  I have a c# .net project and want an input text box for a date value. I want it to display a default value of mm/dd/yyyy and then allow users to enter valid dates. I have tried using a masked text box but it doesn't like having the above format. If i try and use //__ looks naff and so does 00/00/0000 and of course if you put in '0' like 03/11/2009 you get 3/11/29 because the 0's are deleted as part of the mask - so what is the best way to set up an input box like this, effectively with a mask, only allowing numbers, and validation (though at this point I am not so worried about that). This seems so simple and isn't. Thanks, R.

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• How to hide editor-label for public property when calling EditorFor(...)?

  - by FreshCode

  When calling Html.EditorFor(m => m), where m is a public class with public properties, a hidden input and a label are displayed for properties with the [HiddenInput] attribute. How can I hide the label without making it private or creating an editor template? Example public class User { [HiddenInput] public Guid ID { get; set; } // should not be displayed in editor template public string Name { get; set; } // should be editable } Undesired result for ID property by EditorFor(...) with label <div class="editor-label"> <label for="ID">ID</label> <!-- Why is this here? --> </div> <div class="editor-field"> <input id="ID" name="ID" type="hidden" value=""> </div>

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• Add wordwrap to decoded json text

  - by Gary

  Hi, I am using a simple script on my PHP webpage to decode and output JSON as text. However, what ever I try I can't get it to wordwrap the output. $file = file_get_contents('sample.txt'); $out = (json_decode($file)); echo $out->mainText; How can I get this script to wordwrap at 600 characters without chopping words in half? If possible, can you show me the whole script please as I am slowly learning. Thanks

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• Rules Engine vs Expert System

  - by User1

  What is the difference between a rules engine and an expert system? Example1: Let's say that I have a program that determines the expiration date of a new driver's license. It takes inputs like visa expiration date, passport number, birthday, etc. It determines the expiration date of the driver's license from this input. It can even give an error if the input did not have enough valid identifications to allow a new driver's license. Example2: Let's say I am making an online version of the game Monopoly. I want the ability to change the rules of the game (say $400 for passing go or no one can buy properties until they land on the same property twice, etc). I have a module in the code to handle these rules. Are these both rules engines or are they expert systems? They both seem so similar. Is it just a synonym?

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