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Circular Shifts on Strings in Bash

- by Kyle Van Koevering

I have a homework assignment where I need to take input from a file and continuously remove the first word in a line and append it to the end of the line until all combinations have been done. I really don't know where to begin and would be thankful for any sort of direction. The part that has me confused is that this is suppose to be performed without the use of arrays. I'm not just fishing for someone to solve the problem for me, I'm just looking for some direction. Thank you very much for your time and help. SAMPlE INPUT: Pipes and Filters Java Swing Software Requirements Analysis SAMPLE OUTPUT: Analysis Software Requirements Filters Pipes and Java Swing Pipes and Filters Requirements Analysis Software Software Requirements Analysis Swing Java

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DNS Problems (NIGHTMARES!) with BIND and Virtualmin

- by Nyxynyx

I have a webserver (Ubuntu 12.04 with LAMP) using Virtualmin / Webmin. Because I just moved from a Cpanel system, I am having a nightmare configuring the DNS! Using intoDNS.com, the failed reports are: Mismatched NS records WARNING: One or more of your nameservers did not return any of your NS records. DNS servers responded ERROR: One or more of your nameservers did not respond: The ones that did not respond are: 123.123.123.123 213.251.188.141x Multiple Nameservers ERROR: Looks like you have less than 2 nameservers. According to RFC2182 section 5 you must have at least 3 nameservers, and no more than 7. Having 2 nameservers is also ok by me. Missing nameservers reported by your nameserver You should already know that your NS records at your nameservers are missing, so here it is again: ns1.mydomain.com. sdns2.ovh.net. SOA record No valid SOA record came back! MX Records WWW A Record ERROR: I could not get any A records for www.mydomain.com! Step-by-Step of my Attempt In my domain registrar (Namecheap), I registered ns1.mydomain.com as a nameserver, pointing to the IP address of my web server which is running bind9. The domain is setup with DNS ns1.mydomain.com and sdns2.ovh.net. sdns2.ovh.net is a secondary DNS server (SLAVE and pointing mydomain.com to the IP address of my web server) Webserver domain: mydomain.com Webserver hostname: ns4000000.ip-123-123-123.net Webserver IP: 123.123.123.123 Under Virtualmin, I edited the default Virtual server template, BIND DNS records for new domains: ns1.mydomain.com Master DNS server hostname: ns1.mydomain.com Next I created a Virtual server using that server template. This is what I've done but its still not working! Any ideas? I've been stuck for days, thank you for all your help! service bind9 status * bind9 is running lsof -i :53 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME named 6966 bind 20u IPv6 338583 0t0 TCP *:domain (LISTEN) named 6966 bind 21u IPv4 338588 0t0 TCP localhost.localdomain:domain (LISTEN) named 6966 bind 22u IPv4 338590 0t0 TCP ns4000000.ip-123-123-123.net:domain (LISTEN) named 6966 bind 512u IPv6 338582 0t0 UDP *:domain named 6966 bind 513u IPv4 338587 0t0 UDP localhost.localdomain:domain named 6966 bind 514u IPv4 338589 0t0 UDP ns4000000.ip-123-123-123.net:domain /etc/resolv.con (Not sure how 213.186.33.99 got here) nameserver 127.0.0.1 nameserver 213.186.33.99 search ovh.net host 123.123.123.123 (my web server's IP) 13.60.245.198.in-addr.arpa domain name pointer ns4000000.ip-123-123-123.net. nslookup 213.186.33.99 Server: 127.0.0.1 Address: 127.0.0.1#53 Non-authoritative answer: 99.33.186.213.in-addr.arpa name = cdns.ovh.net. Authoritative answers can be found from: 33.186.213.in-addr.arpa nameserver = ns.ovh.net. 33.186.213.in-addr.arpa nameserver = dns.ovh.net. nslookup ns1.mydomain.com ;; Got SERVFAIL reply from 127.0.0.1, trying next server ;; connection timed out; no servers could be reached nslookup ns2.mydomain.com ;; Got SERVFAIL reply from 127.0.0.1, trying next server ;; connection timed out; no servers could be reached nslookup www.mydomain.com ;; Got SERVFAIL reply from 127.0.0.1, trying next server ;; connection timed out; no servers could be reached dig mydomain.com ; <<>> DiG 9.8.1-P1 <<>> mydomain.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 43540 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;mydomain.com. IN A ;; Query time: 0 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Thu Oct 11 11:30:09 2012 ;; MSG SIZE rcvd: 30 dig ns1.mydomain.com ; <<>> DiG 9.8.1-P1 <<>> ns1.mydomain.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 31254 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;ns1.mydomain.com. IN A ;; Query time: 0 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Thu Oct 11 11:30:16 2012 ;; MSG SIZE rcvd: 34 /etc/bind/named.conf include "/etc/bind/named.conf.options"; include "/etc/bind/named.conf.local"; include "/etc/bind/named.conf.default-zones"; /etc/bind/named.conf.default-zones zone "." { type hint; file "/etc/bind/db.root"; }; zone "localhost" { type master; file "/etc/bind/db.local"; }; zone "127.in-addr.arpa" { type master; file "/etc/bind/db.127"; }; zone "0.in-addr.arpa" { type master; file "/etc/bind/db.0"; }; zone "255.in-addr.arpa" { type master; file "/etc/bind/db.255"; }; /etc/bind/named.conf.local zone "mydomain.com" { type master; file "/var/lib/bind/mydomain.com.hosts"; allow-transfer { 127.0.0.1; localnets; }; }; /etc/bind/named.conf.options options { directory "/var/cache/bind"; dnssec-validation auto; auth-nxdomain no; # conform to RFC1035 listen-on-v6 { any; }; // allow-recursion { 127.0.0.1; }; // transfer-source; }; named-checkconf -z dns_master_load: /var/lib/bind/mydomain.com.hosts:21: unexpected end of line dns_master_load: /var/lib/bind/mydomain.com.hosts:20: unexpected end of input /var/lib/bind/mydomain.com.hosts: file does not end with newline zone mydomain.com/IN: loading from master file /var/lib/bind/mydomain.com.hosts failed: unexpected end of input zone mydomain.com/IN: not loaded due to errors. _default/mydomain.com/IN: unexpected end of input zone localhost/IN: loaded serial 2 zone 127.in-addr.arpa/IN: loaded serial 1 zone 0.in-addr.arpa/IN: loaded serial 1 zone 255.in-addr.arpa/IN: loaded serial 1 iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination ACCEPT udp -- anywhere anywhere udp dpt:domain ACCEPT tcp -- anywhere anywhere tcp dpt:20000 ACCEPT tcp -- anywhere anywhere tcp dpt:webmin ACCEPT tcp -- anywhere anywhere tcp dpt:https ACCEPT tcp -- anywhere anywhere tcp dpt:http ACCEPT tcp -- anywhere anywhere tcp dpt:imaps ACCEPT tcp -- anywhere anywhere tcp dpt:imap2 ACCEPT tcp -- anywhere anywhere tcp dpt:pop3s ACCEPT tcp -- anywhere anywhere tcp dpt:pop3 ACCEPT tcp -- anywhere anywhere tcp dpt:ftp-data ACCEPT tcp -- anywhere anywhere tcp dpt:ftp ACCEPT tcp -- anywhere anywhere tcp dpt:domain ACCEPT tcp -- anywhere anywhere tcp dpt:submission ACCEPT tcp -- anywhere anywhere tcp dpt:smtp ACCEPT tcp -- anywhere anywhere tcp dpt:ssh ACCEPT all -- anywhere anywhere Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination

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using Awk inside Perl script

- by papoyan

My first question in stackoverflow! I'm having trouble using the following code inside my perl script, any advise is really appreciated, how to correct the syntax? # If I execute in bash, it's working just fine bash$ whois google.com | egrep "\w+([._-]\w)*@\w+([._-]\w)*\.\w{2,4}" |awk ' {for (i=1;i<=NF;i++) {if ( $i ~ /[[:alpha:]]@[[:alpha:]]/ ) { print $i}}}'|head -n1 [email protected] #----------------------------------- #but this doesn't work bash$ ./email.pl google.com awk: {for (i=1;i<=NF;i++) {if ( ~ /[[:alpha:]]@[[:alpha:]]/ ) { print }}} awk: ^ syntax error # Here is my script bash$ cat email.pl ####\#!/usr/bin/perl $input = lc shift @ARGV; $host = $input; my $email = `whois $host | egrep "\w+([._-]\w)*@\w+([._-]\w)*\.\w{2,4}" |awk ' {for (i=1;i<=NF;i++) {if ( $i ~ /[[:alpha:]]@[[:alpha:]]/ ) { print $i}}}'|head -1`; print my $email; bash$ Thank you in advance !

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Trilateration using 3 latitude and longitude points, and 3 distances

- by nohat

There exists an unknown target location (latitude and longitude co-ordinates). I have 3 latitude and longitude co-ordinate pairs and for each pair a distance in kilometers to the target location. How can I calculate the co-ordinates of the target location? For example, say I have the following data points 37.418436,-121.963477 0.265710701754km 37.417243,-121.961889 0.234592423446km 37.418692,-121.960194 0.0548954278262km What I'd like is what would the guts of the function that takes that as input and returns 37.417959,-121.961954 as output look like? I understand how to calculate the distance between two points, from http://www.movable-type.co.uk/scripts/latlong.html I understand the general principle that with three circles you get exactly one point of overlap. What I'm hazy on is the math needed to calculate that point with this input.

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Multiple vulnerabilities in Oracle Java Web Console

- by RitwikGhoshal

CVE DescriptionCVSSv2 Base ScoreComponentProduct and Resolution CVE-2011-0534 Resource Management Errors vulnerability 5.0 Apache Tomcat Solaris 10 SPARC: 147673-04 X86: 147674-04 CVE-2011-1184 Permissions, Privileges, and Access Controls vulnerability 5.0 CVE-2011-2204 Information Exposure vulnerability 1.9 CVE-2011-2526 Improper Input Validation vulnerability 4.4 CVE-2011-2729 Permissions, Privileges, and Access Controls vulnerability 5.0 CVE-2011-3190 Permissions, Privileges, and Access Controls vulnerability 7.5 CVE-2011-3375 Information Exposure vulnerability 5.0 CVE-2011-4858 Resource Management Errors vulnerability 5.0 CVE-2011-5062 Permissions, Privileges, and Access Controls vulnerability 5.0 CVE-2011-5063 Improper Authentication vulnerability 4.3 CVE-2011-5064 Cryptographic Issues vulnerability 4.3 CVE-2012-0022 Numeric Errors vulnerability 5.0 This notification describes vulnerabilities fixed in third-party components that are included in Oracle's product distributions.Information about vulnerabilities affecting Oracle products can be found on Oracle Critical Patch Updates and Security Alerts page.

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Open Source on .NET evening at UK Tech Days April 14th #uktechdays

- by Eric Nelson

That fine chap http://twitter.com/serialseb is pulling together an interesting evening of fun on the Wednesday in London and I for one will definitely be there. Lots of goodness to learn about. If you are a .NET developer who still isn’t looking at Open Source, then the 14th is a great opportunity to see what you are missing out on. Current program: OpenRasta - A web application framework for .net An introduction to IoC with Castle Windsor FluentValidation, doing your validation in code CouchDB, NoSQL: designing document databases Testing your asp.net applications with IronRuby Building a data-driven app in 15 minutes with FluentNHibernate Register now Related Links: FREE Windows Azure evening in London on April 15th including FREE access to Windows Azure

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C# and MySQL .NET Connector - Any way of preventing SQL Injection attacks in a generic class?

- by John M

My idea is to create some generic classes for Insert/Update/Select via a C# (3.5) Winforms app talking with a MySQL database via MySQL .NET Connector 6.2.2. For example: public void Insert(string strSQL) { if (this.OpenConnection() == true) { MySqlCommand cmd = new MySqlCommand(strSQL, connection); cmd.ExecuteNonQuery(); this.CloseConnection(); } } Then from anywhere in the program I can run a query with/without user input by just passing a SQL query string. Reading around on SO is starting to give me the indication that this may lead to SQL injection attacks (for any user-input values). Is there anyway of scrubbing the inputted strSQL or do I need to go and create individual parameterized queries in every method that needs to do a database function?

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Help with linq to sql compiled query

- by stackoverflowuser

Hi I am trying to use compiled query for one of my linq to sql queries. This query contains 5 to 6 joins. I was able to create the compiled query but the issue I am facing is my query needs to check if the key is within a collection of keys passed as input. But compiled queries do not allow passing of collection (since collection can have varying number of items hence not allowed). For instance input to the function is a collection of keys. Say: List<Guid> InputKeys List<SomeClass> output = null; var compiledQuery = CompiledQueries.Compile<DataContext, IQueryable<SomeClass>>( (context) => from a in context.GetTable<A>() where InputKeys.Contains(a.Key) select a); using(var dataContext = new DataContext()) { output = compiledQuery(dataContext).ToList(); } return output; Is there any work around or better way to do the above?

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HTML Form Upload PDF with other form contents using PHP

- by Sev

I have a HTML form with fields such as name, address, notes, etc. I also have a field to upload a PDF. The uploaded PDF get's stored on the file system. How can I accomplish this if possibly the PDF files are larger than 2 MBs? Also, for some reason, the uploading of the PDF (< 2 MBs) works fine in Chrome, but not in IE. In IE, the upload doesn't even begin, but in Chrome, it completes fine. Form header looks like: method='post' ENCTYPE='multipart/formdata' edit: the ini setting didn't help The HTML <input type='text' name='user' /> <input type='file' name='userfile' /> The basic PHP ( I do some preg matching above, that I haven't included) $uploaddir = 'uploads/'; $uploadfile = $uploaddir . basename($_FILES['userfile']['name']); if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) { echo "File is valid, and was successfully uploaded.\n"; } else { echo "File uploading failed.\n"; }

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XML cross-browser support

- by 1anthony1

I need help getting the file to run in Firefox: I have tried adapting scripts so that my file runs in both IE and Firefox but so far it still only works in IE. (The file can be tested at http://www.eyle.org/crosstest.html - simply type the word Mike in the text box using IE (doesn't work in Firefox).The HTML document is: <!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"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Untitled Document</title> <script type="text/javascript"> var xmlDoc; //loads xml using either IE or firefox function loadXmlDoc() { //test for IE if(window.ActiveXObject) { xmlDoc = new ActiveXObject("Microsoft.XMLDOM"); xmlDoc.async = false; xmlDoc.load("books2.xml"); } //test for Firefox else if(document.implementation && document.implementation.createDocument) { xmlDoc = document.implementation.createDocument("","",null); xmlDoc.load("books2.xml"); } //if neither else {document.write("xml file did not load");} } //window.onload = loadXmlDoc(); var subject; //getDetails adds value of txtField to var subject in outputgroup(subject) function getDetails() { //either this or window.onload = loadXmlDoc is needed loadXmlDoc(); var subject = document.getElementById("txtField1").value; function outputgroup(subject) { var xslt = new ActiveXObject("Msxml2.XSLTemplate"); var xslDoc = new ActiveXObject("Msxml2.FreeThreadedDOMDocument"); var xslProc; xslDoc.async = false; xslDoc.resolveExternals = false; xslDoc.load("contains3books.xsl"); xslt.stylesheet = xslDoc; xslProc = xslt.createProcessor(); xslProc.input = xmlDoc; xslProc.addParameter("subj", subject); xslProc.transform(); document.write(xslProc.output); } outputgroup(subject); } </script> </head> <body> <input type="text" id="txtField1"> <input type="submit" onClick="getDetails(); return false"> </body> </html> The file includes books2.xml and contains3books.xsl (I have put the code for these files at ...ww.eyle.org/books2.xml ...ww.eyle.org/contains3books.xsl) (NB: replace ...ww. with http: // www)

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To find first N prime numbers in python

- by Rahul Tripathi

Hi All, I am new to the programming world. I was just writing this code in python to generate N prime numbers. User should input the value for N which is the total number of prime numbers to print out. I have written this code but it doesn't throw the desired output. Instead it prints the prime numbers till the Nth number. For eg.: User enters the value of N = 7. Desired output: 2, 3, 5, 7, 11, 13, 19 Actual output: 2, 3, 5, 7 Kindly advise. i=1 x = int(input("Enter the number:")) for k in range (1, (x+1), 1): c=0 for j in range (1, (i+1), 1): a = i%j if (a==0): c = c+1 if (c==2): print (i) else: k = k-1 i=i+1

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How to send EOF to stdin in paramiko?

- by Alexandru

I would like to execute some program through ssh and redirect its input from a file. The behaviour of the following code: channel.exec_command('cat') with open('mumu', 'r') as f: text = f.read() nbytes = 0 while nbytes < len(text): sent = channel.send(text[nbytes:]) if sent == 0: break nbytes += sent should be equivalent to (assuming public-key authentication): ssh user@host cat < mumu However the application hangs waiting for more input. I think this happens because the stdin stream is never closed. How do I do that?

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Generate PDF - how to create paged HTML content beforehand?

- by Alt_Doru

My task is to create ready-to-print invoices from a .NET web app. I am already generating the printer-friendly HTML for an invoice - it consists of an invoice header (that will actually need to appear on each printed page) and invoice positions (that may span multiple printed pages). Now, my task is to generate a PDF server-side, populate a header on each of its pages, then populate its pages with invoice positions. I need to generate the PDF from the existing HTML data - by simply passing HTML input to the PDF generator library. I've started using ABCPDF - I am using the AddImageHtml method. The problem I have is that ABCPDF seems to expect me to supply HTML content already paged. So, it won't work correctly when I feed it HTML content that would span on more than 1 PDF page. So, my question is - do you have any suggestions on making this work with ABCPDF? Or, more generally speaking, what other tools/approaches would you use for this - generating PDF doc with headers/footers from HTML input? Thanks

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Sample Code and Slides from DevConnection Germany

- by Stephen Walther

Thank you everyone who came to my three talks this week at DevConnections Germany! I really enjoyed my time in Karlsruhe. Here are the slides and sample code for the three talks: jQuery Templates In this talk, I discuss how you can take advantage of jQuery templates when building both ASP.NET Web Forms and ASP.NET MVC applications. I demonstrate several advanced features of templates such as wrapped templates and remote templates. Download the slides Download the code HTML5 In this talk, I discuss the features of HTML5 which matter most when building database-driven web applications. I demonstrate WebSockets, Web Workers, Web Storage, IndexedDB, and Offline Web Applications. Download the slides Download the code jQuery + OData In this talk, I demonstrate how you can build entire web applications by taking advantage of jQuery and OData. I demonstrate how you can use jQuery and OData to both query and update database data. I also discuss two approaches for supporting validation. Download the slides Download the code

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javascript to jquery

- by Angeline Aarthi

How do I write the following line which is in javascript in jQuery? var variablename = new functionname('some variable'); This is my js code: var rt = new ResizeableTextbox('myRT'); I need to use this in the following code segment: if($(this).text() =='String') { $("<label id=labelstr"+stringinc+" >"+label+"</label>").appendTo(".menu li"); $("<input id=inputstr"+stringinc+" type= 'text' ></input>").appendTo(".menu li"); //in place of this I need that javascript code. } How do I do that? The function Resizeable is defined in a separate js file. Please help me out.

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Simple number-to-number (or number-to-hex) encryption algorithm that minimizes # of characters

- by Clay Nichols

I need to encrypt a number and I and this encrypted value will be given to a customer ask a key so I want to minimize the number of digits and make them all printable. So I'd like the result to be either all number or all Hex characters. The current encryption method I'm using (for non numbers) converts the characters to hex (2 hex digits each). That doubles the number of characters. I also considered just treating the input as hex (so each pair of numbers is treated as a Hex pair, but then you have ambiguity between an input of 0123 and 123 (when decrypting that leading '0' is lost. Any suggestions?

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Some more multitasking java issues

- by owca

I had a task to write simple game simulating two players picking up 1-3 matches one after another until the pile is gone. I managed to do it for computer choosing random value of matches but now I'd like to go further and allow humans to play the game. Here's what I already have : http://paste.pocoo.org/show/200660/ Class Player is a computer player, and PlayerMan should be human being. Problem is, that thread of PlayerMan should wait until proper value of matches is given but I cannot make it work this way. When I type the values it sometimes catches them and decrease amount of matches but that's not exactly what I was up to :) Logics is : I check the value of current player. If it corresponds to this of the thread currently active I use scanner to catch the amount of matches. Else I wait one second (I know it's kinda harsh solution, but I have no other idea how to do it). Class Shared keeps the value of current player, and also amount of matches. By the way, is there any way I can make Player and Shared attributes private instead of public and still make the code work ? CONSOLE and INPUT-DIALOG is just for choosing way of inserting values. class PlayerMan extends Player{ static final int CONSOLE=0; static final int INPUT_DIALOG=1; private int input; public PlayerMan(String name, Shared data, int c){ super(name, data); input = c; } @Override public void run(){ Scanner scanner = new Scanner(System.in); int n = 0; System.out.println("Matches on table: "+data.matchesAmount); System.out.println("which: "+data.which); System.out.println("number: "+number); while(data.matchesAmount != 0){ if(number == data.which){ System.out.println("Choose amount of matches (from 1 to 3): "); n = scanner.nextInt(); if(data.matchesAmount == 1){ System.out.println("There's only 1 match left !"); while(n != 1){ n = scanner.nextInt(); } } else{ do{ n = scanner.nextInt(); } while(n <= 1 && n >= 3); } data.matchesAmount = data.matchesAmount - n; System.out.println(" "+ name+" takes "+n+" matches."); if(number != 0){ data.which = 0; } else{ data.which = 1; } } else{ try { Thread.sleep(1000); } catch(InterruptedException exc) { System.out.println("End of thread."); return; } } System.out.println("Matches on table: "+data.matchesAmount); } if(data.matchesAmount == 0){ System.out.println("Winner is player: "+name); stop(); } } }

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How can I extract URLs from plain text with Perl?

- by Russell C.

I need the Perl regex to parse plain text input and convert all links to valid HTML HREF links. I've tried 10 different versions I found on the web but none of them seen to work correctly. I also tested other solutions posted on StackOverflow, none of which seem to work. The correct solution should be able to find any URL in the plain text input and convert it to: <a href="$1">$1</a> Some cases other regular expressions I tried didn't handle correctly include: URLs at the end of a line which are followed by returns URLs that included question marks URLs that start with 'https' I'm hoping that another Perl guy out there will already have a regular expression they are using for this that they can share. Thanks in advance for your help!

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prototype/javascript - firefox not firing keypress/keydown event unless focus is in textbox

- by Chloraphil

The following works fine on IE6, IE7, and chrome. Not working on ff 3.0.7. <html><head> <script src="prototype.js" type="text/javascript" ></script> <script type="text/javascript"> Event.observe(window, 'load', function(){ Event.observe(document.body, 'keydown', myEventHandler); alert('window load'); }); function myEventHandler(evt) { alert(evt); } </script> </head> <body > <input type="text" /><br><br> </body></html> EDIT: By "not working" I mean myEventHandler is not firing in firefox. EDIT2: Furthermore, it works fine when focus is on the input element. I want it fire for all keydowns.

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Cannot load JRubyEngine because org.apache.bsf.util.BSFEngineImpl not found

- by Ceilingfish

Hi, I'm trying to use JRuby in a custom application, and I don't seem to be able to load the JRubyEngine object. My class looks like functionally similar to this: public class ScriptEngine { private static ScriptEngine engine = new JRubyEngine(); public void run(final String script, final Map<String,Object> input) { final Bindings context = engine.createBindings(); context.putAll(input); try { engine.eval(script,context); } catch (ScriptException e) { log.error("Failed to execute script: "+getScript(),e); } } } However this fails at compilation with the complaint: [javac] Compiling 486 source files to /workspace/myProject/build/src [javac] /workspace/myProject/src/net/ceilingfish/ScriptEngine.java:31: cannot access org.apache.bsf.util.BSFEngineImpl [javac] class file for org.apache.bsf.util.BSFEngineImpl not found [javac] private static ScriptEngine engine = new JRubyEngine(); [javac] ^ [javac] 1 error Does anyone have any insights on where I can get this class from? Or if there is a better way to be instantiating a JRubyEngine object.

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Get graphics information from font file. How to develop font parser similar to PDFView's font parser

- by HBA

Hi, I am trying to convert text into graphics using c#. My input is character string and output is bitmap with the input text. After lot of search I found some ways to do it, I found some techiques which uses this kind of techinque. For Example While creating Captcha, we have to print the character in the bitmap. But for that I should have the font installed in my windows. I can not perform such operation without installing the font. I have .ttf file with me but I dont want to install it because my work for that font is temporary only. Is there any way where I can extract out the Font's graphical information by providing the Character? I have also found font parser code http://swinglabs.java.sun.com/hudson/job/PDFRenderer%20Weekly%20Build/javadoc/com/sun/pdfview/font/package-summary.html Can anyone please provide me how to develpo similar thing using c#.Net? Or From where can I get the algorithm to parce font?

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Java RegEx Pattern not matching (works in .NET)

- by CDSO1

Below is an example that is producing an exception in Java (and not matching the input). Perhaps I misunderstood the JavaDoc, but it looks like it should work. Using the same pattern and input in C# will produce a match. import java.util.regex.Matcher; import java.util.regex.Pattern; public class Main { public static void main(String[] args) { String pattern = "aspx\\?uid=([^']*)"; Pattern p = Pattern.compile(pattern); Matcher m = p.matcher("id='page.aspx?uid=123'"); System.out.println(m.groupCount() > 0 ? m.group(1) : "No Matches"); } }

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Code Golf: Banknote calculator

- by paxdiablo

This question was posted by a C beginner and it was an exercise to calculate, given a dollar value input by the user, the minimum number of bills (or banknotes, depending on your locale) needed to reach that dollar value. So, if the user entered 93, the output would be: $20 bills = 4 $10 bills = 1 $5 bills = 0 $1 bills = 3 Finally succumbing to the phenomenon (it's a slow day here), I thought this would be ripe for a game of Code Golf. For fairness, the input prompt needs to be (note the "_" at the end is a space): Enter a dollar amount:_ I think I've covered all the bases: no identical question, community wiki. I won't be offended if it gets shut down though - of course, I'll never be able to complain about these types of questions again, for fear of being labelled a hypocrite :-) Okay, let's see what you can come up with. Here's a sample run: Enter a dollar amount: 127 $20 bills = 6 $10 bills = 0 $5 bills = 1 $1 bills = 2

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How do I redirect a page in php

- by user225269

I'm having difficulties in the making the logout code for php to work. When I click on the logout button, it will go back to the home page, but when I click on the back button in the browser. I can still access the previous page, wherein the user must be logged on to access it. So I'm thinking of redirecting to the login page when the user clicks on the back button on the browser. This is my code, in the home page(where in no user is logged in yet. This page is being called by a logout link on the user page. <? session_start(); session_destroy(); ?> <table width="300" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC"> <tr> <form name="form1" method="post" action="checklogin.php"> <td> <table width="100%" border="0" cellpadding="3" cellspacing="1" bgcolor="#FFFFFF"> <tr> <td colspan="3"><strong>Member Login </strong></td> </tr> <tr> <td width="78">Username</td> <td width="6">:</td> <td width="294"><input name="myusername" type="text" id="myusername"></td> </tr> <tr> <td>Password</td> <td>:</td> <td><input name="mypassword" type="text" id="mypassword"></td> </tr> <tr> <td> </td> <td> </td> <td><input type="submit" name="Submit" value="Login"></td> </tr> </table> </td> </form> </tr> </table>

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May the FileInputStream.available foolish me?

- by Tom Brito

This FileInputStream.available() javadoc says: Returns an estimate of the number of remaining bytes that can be read (or skipped over) from this input stream without blocking by the next invocation of a method for this input stream. The next invocation might be the same thread or another thread. A single read or skip of this many bytes will not block, but may read or skip fewer bytes. In some cases, a non-blocking read (or skip) may appear to be blocked when it is merely slow, for example when reading large files over slow networks. I'm not sure if in this check: if (new FileInputStream(xmlFile).available() == 0) can I rely that empty files will always return zero?

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