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  • Parsing JPEG file format: Format of entropy-coded segments (ECS) ?

    - by me2
    I'm having difficulty understanding the ITU-T T.81 spec for the JPEG file format. Hopefully someone else here has tried to parse JPEG files and/or knows about the details of this file format. The spec indiates that the ECS0 segment starts after the SOS segment but I can't find where in the spec it actually talks about the format of the ECS0 segment or how do detect its start. Simple JPEG implementations online are of limited help because they assume many things about the JPEGs they parse. Can anyone point me in the right direction? FYI: The JPEG file format spec is here.

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  • How to aviod duplication entry via form into database

    - by DAFFODIL
    <?php $con = mysql_connect("localhost","root",""); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("form", $con); $reb = "select count(*) from customer where name = '$name';" if (mysql_result($reb,0) > 0) { echo "Item Already Added!<br>"; } else { // add the item } mysql_close($con); header( 'Location: http://localhost/cus.php' ); ?> Parse error: parse error in C:\wamp\www\c.php on line 10

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  • When is JavaScript's eval() not evil?

    - by Richard Turner
    I'm writing some JavaScript to parse user-entered functions (for spreadsheet-like functionality). Having parsed the formula I could convert it into JavaScript and run eval() on it to yield the result. However, I've always shied away from using eval() if I can avoid it because it's evil (and, rightly or wrongly, I've always thought it is even more evil in JavaScript because the code to be evaluated might be changed by the user). Obviously one has to use eval() to parse JSON (I presume that JS libraries use eval() for this somewhere, even if they run the JSON through a regex check first), but when else, other than when manipulating JSON, it is OK to use eval()?

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  • Hudson interactive mode:- Is there one?

    - by Rupal Desai
    I'm pretty new to hudson build system. I currently have my builds run from combination of perl/cgi scripts, with ability to start from a browser. What I need is an ability in hudson to checkout a file from perforce (can do that), parse that file (i can write a script for this) and based on the result of the parse give the user ability to choose various different options on what to build (compile). Is this possible? I'm not sure if I should tie together couple of different projects to do this or not? Any ideas on this could be achieved would be very helpful.

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  • Fast, lightweight XML parser

    - by joe90
    I have a specific format XML document that I will get pushed. This document will always be the same type so it's very strict. I need to parse this so that I can convert it into JSON (well, a slightly bastardized version so someone else can use it with DOJO). My question is, shall I use a very fast lightweight (no need for SAX, etc.) XML parser (any ideas?) or write my own, basically converting into a StringBuffer and spinning through the array? Basically, under the covers I assume all HTML parsers will spin thru the string (or memory buffer) and parse, producing output on the way through. Thanks //edit Thanks for the responses so far :) The xml will be between 3/4 lines to about 50 max (at the extreme)..

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  • Regarding xml parsing in iphone

    - by Prash.......
    hi... I am developing an applictaion in which i am doing xml parsing i found an error in [xmlparse parse] method. and the error for this is as follows: [NSCFString bytes]: unrecognized selector sent to instance 0x3df6310 2010-04-30 00:09:46.302 SPCiphone2[4234:1003] void SendDelegateMessage(NSInvocation*): delegate () failed to return after waiting 10 seconds. main run loop mode: kCFRunLoopDefaultMode code snippet for this as follows. responseOfWebResultData = [[NSMutableString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]; NSLog(@"result: %@", responseOfWebResultData); //starting the XML parsing if(responseOfWebResultData) { @try { xmlParser = [[NSXMLParser alloc] initWithData:responseOfWebResultData]; [xmlParser setDelegate: self]; [xmlParser setShouldResolveExternalEntities: YES]; [xmlParser parse]; [responseOfWebResultData release]; } @catch(NSException *e) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Please " message:[e reason] delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil]; [alert show]; [alert release]; } }

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  • Code editor with autocomplete

    - by Andrey
    I need to create a code editor for my own simple language: className.MethodName(parameterName = 2, ... ) I've created the appropriate grammar and autogenerate parser using ANTLR tool. Now I would like to have an autocomplete for class, method, variables and parameter names. This list should be context dependent, f.e. for "class." it should display methods and for "class.Method(" - parameters. I was going to parse the text and display the list depending on in which node the cursor is. The problem is that for incomplete code like "aaa.bbb(" the parser produces an error instead of a syntax tree. Any idea how to solve this problem? Maybe I'm on the wrong way and I shouldn't parse code to display autocomplete?

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  • Advanced control of recursive parser in scala

    - by Jeriho
    val uninterestingthings = ".".r val parser = "(?ui)(regexvalue)".r | (uninterestingthings~>parser) This recursive parser will try to parse "(?ui)(regexvalue)".r until the end of input. Is in scala a way to prohibit parsing when some defined number of characters were consumed by "uninterestingthings" ? UPD: I have one poor solution: object NonRecursiveParser extends RegexParsers with PackratParsers{ var max = -1 val maxInput2Consume = 25 def uninteresting:Regex ={ if(max<maxInput2Consume){ max+=1 ("."+"{0,"+max.toString+"}").r }else{ throw new Exception("I am tired") } } lazy val value = "itt".r def parser:Parser[Any] = (uninteresting~>value)|parser def parseQuery(input:String) = { try{ parse(parser, input) }catch{ case e:Exception => } } } Disadvantages: - not all members are lazy vals so PackratParser will have some time penalty - constructing regexps on every "uninteresting" method call - time penalty - using exception to control program - code style and time penalty

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  • ICalendar parser in PHP that supports timezones

    - by Vincent Robert
    I am looking for a PHP class that can parse an ICalendar (ICS) file and correctly handle timezones. I already created an ICS parser myself but it can only handle timezones known to PHP (like 'Europe/Paris'). Unfortunately, ICS file generated by Evolution (default calendar software of Ubuntu) does not use default timezone IDs. It exports events with its a specific timezone ID exporting also the full definition of the timezone: daylight saving dates, recurrence rule and all the hard stuff to understand about timezones. This is too much for me. Since it was only a small utility for my girlfriend, I won't have time to investigate further the ICalendar specification and create a full blown ICalendar parser myself. So is there any known implementation in PHP of ICalendar file format that can parse timezones definitions?

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  • Perl: parsing string enclosed by double quotes

    - by sfactor
    I need to parse tab/space delimited files that have a lot of columns in Perl. The values are such that the there are large strings enclosed within double quotes. These strings can have any characters such as tabs and spaces or anything else. When I try to parse them with the split function it splits these strings as well. Now how can I make perl understand that the strings within the " " are a single column entry? A simple example is, 12 345546.67677 "Hello World!!!" -567.55656 0.5465767 "Hello_Again; "

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  • python sax error "junk after document element"

    - by user293487
    Hi, I use python sax to parse xml file. The xml file is actually a combination of multiple xml files. It looks like as follows: <row name="abc" age="40" body="blalalala..." creationdate="03/10/10" /> <row name="bcd" age="50" body="blalalala..." creationdate="03/10/09" /> My python code is in the following. It show "junk after document element" error. Any good idea to solve this problem. Thanks. from xml.sax.handler import ContentHandler from xml.sax import make_parser,SAXException import sys class PostHandler (ContentHandler): def __init__(self): self.find = 0 self.buffer = '' self.mapping={} def startElement(self,name,attrs): if name == 'row': self.find = 1 self.body = attrs["body"] print attrs["body"] def character(self,data): if self.find==1: self.buffer+=data def endElement(self,name): if self.find == 1: self.mapping[self.body] = self.buffer print self.mapping parser = make_parser() handler = PostHandler() parser.setContentHandler(handler) try: parser.parse(open("2.xml")) except SAXException:

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  • java : How can I cast Date from "Thu May 01 00:00:00 WEST 2014 " to "2014-01-05 00:00:00.0"

    - by lilyana
    How can I want to cast Date from "Thu May 01 00:00:00 WEST 2014 " to "2014-01-05 00:00:00.0" I try with this code : SimpleDateFormat toFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.S"); String dateStr = getDtdebut().toString(); Date date = new Date(); try { date = toFormat.parse(dateStr); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } but i have this error : java.text.ParseException: Unparseable date: "Thu May 01 00:00:00 WEST 2014" at java.text.DateFormat.parse(Unknown Source) at ensa.pfe.action.GestionOperations.filtre(GestionOperations.java:386) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:440) at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:279) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242) ..........

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  • Zero division does not throw exception in nunit

    - by Boris
    Running the following C# code through NUnit yields Test.ControllerTest.TestSanity: Expected: <System.DivideByZeroException> But was: null So either no DivideByZeroException is thrown, or NUnit does not catch it. Similar to this question, but the answers he got, do not seem to work for me. This is using NUnit 2.5.5.10112, and .NET 4.0.30319. [Test] public void TestSanity() { Assert.Throws<DivideByZeroException>(new TestDelegate(() => DivideByZero())); } private void DivideByZero() { // Parse "0" to make sure to get an error at run time, not compile time. var a = (1 / Double.Parse("0")); } Any ideas?

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  • FLVParser problem

    - by mujer-esponja
    Hi! I am using apache tika 7.0, one of the classes, called FLVParser, which is used to extrac metadata from videos. But, when i try to use one of the methos in the class, i get this error in Eclipse: Multiple markers at this line Syntax error on token "parse", Identifier expected after this token Syntax error on token(s), misplaced construct(s) I don't know exactly the meaning of this, and i don't know how to continue. I add the poiece of code also: FLVParser VideoParser = new FLVParser(); VideoParser.parse(); //Here is the error message Any ideas, please?? I made the imports in the right way and the mave dependencies are right aswell. Thanks in advance!

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  • Django how to handle # in variable name.

    - by Jack
    I've got a dictionary in python which is assigned as a template variable. One of the keys is named "#text" but when i try to access it using {{ artist.image.3."#text"}} I get an error which is File "/home/jack/Desktop/test/appengine/lib/django/django/template/__init__.py", line 558, in __init__ raise TemplateSyntaxError, "Could not parse the remainder: %s" % token[upto:] TemplateSyntaxError: Could not parse the remainder: "#text" So how can I use this in the template? I've tried putting quotes around it but to no avail. I'd like to not modify the dictionary if possible, but if its easy enough to do then I guess its okay. Thanks

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  • How to use OptionParse to allow only one flag

    - by dorelal
    There are only three ways to invoke install.sh ./install.sh ./install.sh --force ./install.sh -f I can write it easily. However I am trying to make use of OptionParse. This is what I have so far. def self.parse option = {} optparse = OptionParser.new do |opts| opts.banner = "Usage: ./install.sh [--force]" opts.on('-f', '--force', '') do |dir| option[:force] = true end end begin optparse.parse! rescue OptionParser::InvalidOption => e puts e end end How do I provide feedback to user in case user provides something other than -f or --force.

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  • Reading JSON with JQuery

    - by user70192
    Hello, I am using JQuery to execute an operation within a web service. After writing data back to my databaes, the service returns a JSON response. My request looks like the following: $.ajax({ url: "/services/myService.svc/PostMessage", type: "POST", contentType: "application/json; charset=utf-8", data: '{"message":"testing","comments":"test"}', dataType: "json", success: function (response) { if ((response.d != null) && (response.d.length > 0)) { // Parse the status code here } else { alert("error!"); } }, error: function (req, msg, obj) { alert("error: " + req.responseText); } }); When my response is returned, response.d contains the following: [{"StatusCode":1}] How do I parse out the value of the StatusCode?

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  • java version of python-dateutil

    - by elhefe
    Python has a very handy package that can parse nearly any unambiguous date and provides helpful error messages on a parse failure, python-dateutil. Comparison to the SimpleDateFormat class is not favorable - AFAICT SimpleDateFormat can only handle one exact date format and the error messages have no granularity. I've looked through the Joda API but it appears Joda is the same way - only one explicit format can be parsed at a time. Is there any package or library that reproduces the python-dateutil behavior? Or am I missing something WRT Joda/SimpleDateFormat?

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  • Criteria hibernate

    - by apb
    my code session.createCriteria(Input.class); DateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss"); Date startDate = (Date)format.parse("2005-01-01 00:00:00"); Date endDate = (Date)format.parse("2005-03-03 00:00:00"); crit.add(Expression.between ("inputDate", new Date(startDate.getTime()), new Date(endDate.getTime()))); This code return a list, but there is no element present in it. i think it doesn't match the condition. Anybody help.

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  • Error "E_UNEXPECTED(0x8000FFFF)" when using CDec/CInt/IsNumeric

    - by Marc vB
    I have encountered a strange problem, which I could solve but don't understand why it did occur. I have build a DLL with COM enabled. In this DLL I have classes that did use the functions CInt, CDec and IsNumeric. If I test these classes from a .NET application then it works ok. But when I called/run these classes from a Win32 application (with COM) then I did get an "E_UNEXPECTED(0x8000FFFF)" error. After some debugging I found out that the problem would go away if I: - replaced IsNumeric with Integer.TryParse or Decimal.TryParse - replaced CInt with Integer.Parse - replaced CDec with Decimal.Parse Can anyone explain this? Again, I could solve it by doing this but I would like to know why.

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  • How to display the data of DOM parsed attributes in the listView display ?

    - by Praween k
    Hi, I am building a test output for DOM parser with node "Rider" and within that 7 attributes are there.URL://http://ps700.pranasystems.com/tours/8/xml/results/stage1results.xml. I want to display only the "name" and the "team" attributes output in the listview mode of the device.I am not getting clear where to store the output to display. Please help me someone for how to store and display that data to the output of the device in List view. Thanks in advance //-------------------------------// Here is my code------------// public String getSearch(String strURL) { URL url; URLConnection urlConn = null; NamedNodeMap nnm = null; int len; try { url = new URL(strURL); urlConn = url.openConnection(); } catch (IOException ioe) { Log.e("Could not Connect: "+ioe.getMessage(), "."); } DocumentBuilder builder = null ; Document doc = null ; try { DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); DocumentBuilder db = dbf.newDocumentBuilder(); doc = db.parse(urlConn.getInputStream()); Node thisNode, currentNode, node,theAttribute ; NodeList nchild, nodeList; String name; ArrayList<Node> result = new ArrayList<Node>(); nodeList = doc.getElementsByTagName("rider"); int length = nodeList.getLength(); for (int i = 0; i < length; i++) { currentNode = nodeList.item(i); NamedNodeMap attributes = currentNode.getAttributes(); Log.i("TAG", attributes.toString()); for (int a = 0; a < attributes.getLength(); a++) { theAttribute = attributes.item(a); } // s1.setAdapter(new ArrayAdapter<Node>(this, // android.R.layout.simple_list_item_1,result)); }catch(ParserConfigurationException pce ){ Log.e("Could not Parse XML:" +pce.getMessage() ,"."); } catch (SAXException se) {Log.e("Could not Parse XML: "+se.getMessage(), ".");} catch (IOException ioe) {Log.e("Invalid XML: "+ioe.getMessage(), ".");} return strURL; }

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  • MS Test : How do I enforce exception message with ExpectedException attribute

    - by CRice
    I thought these two tests should behave identically, in fact I have written the test in my project using MS Test only to find out now that it does not respect the expected message in the same way that nunit does. nunit (fails): [Test, ExpectedException(typeof(System.FormatException), ExpectedMessage = "blah")] public void Validate() { int.Parse("dfd"); } ms test (passes): [TestMethod, ExpectedException(typeof(System.FormatException), "blah")] public void Validate() { int.Parse("dfd"); } No matter what message I give the ms test, it will pass. Is there any way to get the ms test to fail if the message is not right? Can I even create my own exception attribute? I would rather not have to write a try catch block for every test where this occurs.

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