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• How do I write a custom validator for a zend form element with customized error messages?

  - by Mallika Iyer

  I have a question field with a list of allowed characters : A-Z,0-9,colon (:), question mark (?), comma(,), hyphen(-), apostrophe ('). I have the regex which works fine, in the fashion : $question->addValidator('regex', true, array(<regular expresstion>)) The default error message is something like ''' does not match against pattern '' I want to write a custom error message that says ' is not allowed in this field' Is there a simple way to do it using the existing zend components that I'm missing? Is writing a custom validator the only way to achieve what I'm trying to achieve? If yes, how do I write a custom validator (I looked at the documentation and didn't quite understand how I can customize the error messages) If there is any other way, I'd most appreciate that input too. Thanks for taking the time to answer this!

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• I need to Split a string based on a complex delimiter

  - by Jason

  In C# I need to split a string (a log4j log file) into array elements based on a particular sequence of characters, namely "nnnn-nn-nn nn:nn:nn INFO". I'm currently splitting this log file up by newlines, which is fine except when the log statements themselves contain newlines. I don't control the input (the log file) so escaping them somehow is not an option. It seems like I should be able to use a comparator or a regex to identify the strings, but String.Split does not have an option like that. Am I stuck rolling my own, or is there a pattern or framework component that can be of help here?

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• Stripe suppression algorithm needed

  - by maximus

  I have images with text. There are dark stripes in image that still exists in binary image too. That makes characters connected with that stripe - it can be vertical or horizontal (or at some angle) I need to remove them from image at first, and then to binarize. I've seen bandpass filter in ImageJ program that have some options like - suppress horizontal stripes, and it works good, but it also apply a bandpass filtering. So any idea please how to do it. I think it should be done in frequency domain.

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• Algorithm for measuring distance between disordered sequences

  - by Kinopiko

  The Levenshtein distance gives us a way to calculate the distance between two similar strings in terms of disordered individual characters: quick brown fox quikc brown fax The Levenshtein distance = 3. What is a similar algorithm for the distance between two strings with similar subsequences? For example, in quickbrownfox brownquickfox the Levenshtein distance is 10, but this takes no account of the fact that the strings have two similar subsequences, which makes them more "similar" than completely disordered words like quickbrownfox qburiocwknfox and yet this completely disordered version has a Levenshtein distance of eight. What distance measures exist which take the length of subsequences into account, without assuming that the subsequences can be easily broken into distinct words?

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• Is there such a thing as a virtual COM port receipt printer?

  - by Blorgbeard

  I'm debugging some code that writes directly to a COM port in order to print receipts on a receipt printer. The printer model is something like an Epsom TM-88. Instead of printing reams of thermal paper while debugging this code, it would be nice if I could use some kind of virtual printer. Like PDFCreator or FinePrint, but with a virtual COM port instead of a virtual windows printer. Does anyone know of such a thing? Edit: The code sends control characters to get bold text and other formatting. I'd like to see this in the output if possible.

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• MS Word paste into tinymce - retain tabulators

  - by jdog

  Hi, I have a 5 year old web application which runs tinymce 2.0.5.1 In this version it is possible - in IE 6,7,8 only to paste from MS Word and retain the tab characters. What we have done is to add a callback: paste_insert_word_content_callback : "findtabs" function findtabs(type, content) { if (type == "before"){ content = content.replace(/( This functionality is important to the client as they have 100s of MS Word documents of quote templates which use tabulators for formatting. Because of another problem suspected to be caused by TinyMCE, we'd like to upgrade to the current TinyMCE version 3.2.7 However in this version the resulting paste code does not contain anything that seems to 100% link to a tabulator. If pasted into an empty textarea, I get something like , if pasted into a I simply a space character. Can anyone recommend how to detect tabulators when pasting from MS Word?

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• how to close a popup screen in blackberry bold

  - by SWATI

  hey i have displayed a pop-up screen when i click on a menu item now i want to close that pop-up screen when user presses escape key.but it does not work and remain stuck,till i click on a button on the pop=up screen. how can i achieve that???? filter is my pop-up screen my code is ::: protected boolean keyChar(char c, int status, int time) { boolean retVal = false; if (c == Characters.ESCAPE) { close(); UiApplication.getUiApplication().invokeLater(new Runnable() { public void run() { //UiApplication.getUiApplication().popScreen(filter); UiApplication.getUiApplication(). popScreen(UiApplication.getUiApplication().getActiveScreen());//(filter); } }); retVal = super.keyChar(c,status,time); } return retVal; }

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• Problem sending ASCII Art via SMS and Email in iPhone SDK

  - by PARTH

  Hi Guys, In my iPhone app, I have ASCII art, which I am sharing via email and SMS. I have inserted the ASCII art into the Sqlite database along with the newline character and spaces. Problem is when I send them through SMS and Email, the whole ASCII art comes in left alignment and spacing between characters is lost. ASCII Art fetched in Label in my app is as below Same ASCII Art when inserted to Email API (MFMailComposeViewController) is as below How to maintain the spaces? What can be done? Please Help and Suggest. Thanks

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• Regex replace help

  - by Jeremy

  Using the .NET framework, I'm trying to replace double slash characters in a string with a single slash, but it seems to be removing an extra character and I don't know why. I have a string: http://localhost:4170/RCRSelfRegistration//Default.aspx My regex is: [^(://|:\\\\)](\\\\|//|\\/|/\\) And the return value is: http://localhost:4170/RCRSelfRegistratio/Default.aspx You can see that the n in RCRSelfRegistration has been removed. I am not sure why. /// <summary> /// Match on double slashes (//, \\, /\, \/) but do not match :// or :\\ /// </summary> private const string strMATCH = @"[^(://|:\\\\)](\\\\|//|\\/|/\\)"; /// <summary> /// Replace double slashes with single slash /// </summary> /// <param name="strUrl"></param> /// <returns></returns> public static string GetUrl(string strUrl) { string strNewUrl System.Text.RegularExpressions.Regex rxReplace = new System.Text.RegularExpressions.Regex(strMATCH); strNewUrl = rxReplace.Replace(strUrl, "/"); return strNewUrl; }

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• Decoding a compressed short string; uncertain on compression used - Updated

  - by James

  Hi, I have a program that is compressing a string in an unknown way. I know a few inputs and the output produced, but I am not sure what is being used to compress the string. Here are my examples. (just 38 x a, no spaces or anything else) In: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" Out: "026900211AA63000026900"   (just 32 x a) In: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" Out: "0209001c1aa7a000020900" (31 x a, then 1 b) In: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab" Out: "0209000177c553c000020900" (31 x b, then 1 a) In: "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbba" Out: "0209001e7754f38000020900" In: "Hey wot u doing 2day u wanna do something" Out: "02990011C7C62E78CE6B8E3ACD83E81B37C5C5A6B9D1E1B06963DB5E71155C1000029900" (same as previous string, but with a space at the end) In: "Hey wot u doing 2day u wanna do something " Out: "02A90012C7718B9E339AE2EB360FA02CDF17177A674786DF4B1EDAF388AAE08000000002A90000" The only definite thing I can see so far is digit 2 and 3 are the amount of characters (hex value), ie first one is 26 = 38 Also the first 6 digits are repeated at the end Any help / advice would be great, thanks!

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• Creating DescriptionAttribute on Enumeration Field using System.Reflection.Emit

  - by Manish Sinha

  I have a list of strings which are candidates for Enumerations values. They are Don't send diffs 500 lines 1000 lines 5000 lines Send entire diff The problem is that spaces, special characters are not a part of identifiers and even cannot start with a number, so I would be sanitizing these values to only chars, numbers and _ To keep the original values I thought of putting these strings in the DescriptionAttribute, such that the final Enum should look like public enum DiffBehvaiour { [Description("Don't send diffs")] Dont_send_diffs, [Description("500 lines")] Diff_500_lines, [Description("1000 lines")] Diff_1000_lines, [Description("5000 lines")] Diff_5000_lines, [Description("Send entire diff")] Send_entire_diff } Then later using code I will retrieve the real string associated with the enumeration value, so that the correct string can be sent back the web service to get the correct resource. I want to know how to create the DescriptionAttribute using System.Reflection.Emit Basically the question is where and how to store the original string so that when the Enumeration value is chosen, the corresponding value can be retrieved. I am also interested in knowing how to access DescriptionAttribute when needed.

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• Opposite of nl2br? Is it str_replace?

  - by Julian H. Lam

  So the function nl2br is handy. Except in my web app, I want to do the opposite, interpret line breaks as new lines, since they will be echoed into a pre-filled form. str_replace can take <br /> and replace it with whatever I want, but if I put in \n, it echoes literally a backslash and an n. It only works if I put a literal line break in the middle of my script, and break the indentation (so there are no trailing space). See: <?=str_replace('<br />',' ',$foo)?> Am I missing escape characters? I think I tried every combination...

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• Converting Microsoft Word Smart Quotes to Straight Quotes

  - by curiousR

  We have a program where the user needs to do a Copy-Paste some content from Microsoft Word into a HTML editor (Visual Studio 2008). That content in the HTML is then used in our confirmation emails. Some of the characters like curly quotes turn into ? on the browser & in our confirmation email. For the browser... I was able to find how to resolve this issue by using jQuery. But for the confirmation email I cannot use JavaScript. I tried this ASP.net / C# code but it hasn't worked for me. if (s.IndexOf('\u201b') -1) s = s.Replace('\u201b', '\''); if (s.IndexOf('\u201c') -1) s = s.Replace('\u201c', '\"'); if (s.IndexOf('\u201d') -1) s = s.Replace('\u201d', '\"'); if (s.IndexOf('\u201e') -1) s = s.Replace('\u201e', '\"'); I would appreciate any help in resolution. Thanks.

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• Java Charset problem on linux

  - by scot

  Hi, problem: I have a string containing special characters which i convert to bytes and vice versa..the conversion works properly on windows but on linux the special character is not converted properly.the default charset on linux is UTF-8 as seen with Charset.defaultCharset.getdisplayName() however if i run on linux with option -Dfile.encoding=ISO-8859-1 it works properly.. how to make it work using the UTF-8 default charset and not setting the -D option in unix environment. edit: i use jdk1.6.13 edit:code snippet works with cs = "ISO-8859-1"; or cs="UTF-8"; on win but not in linux String x = "½"; System.out.println(x); byte[] ba = x.getBytes(Charset.forName(cs)); for (byte b : ba) { System.out.println(b); } String y = new String(ba, Charset.forName(cs)); System.out.println(y); ~regards daed

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• How can I use TMask when the mask contains "["?

  - by Lobuno

  I have been experimenting with TMask in Delphi 2010 and it seems to work as expected except in one situation: when the mask name contains [ or ] the mask always seem to return false. For example: var MaskObj : TMask; begin MaskObj:= TMask.Create('c:\[test]\*'); try Result:= MaskObj.Matches('c:\[test]\text'); finally FreeAndNil(MaskObj); end; end; returns false. ... Yes, [ and ] are legal characters in file name. So if I want to exclude for example all files in c:[test]*, what could I do here? My only solution is to do a StringReplace if [ is detected, but this will be slow for a large number of files: if (pos('[', Mask)>0) then begin mask:= ReplaceString(Mask, '[','_', etc... // and do the same for the file name--- end; Is there any other approach?

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• wxruby - Set max length of ComboBox

  - by Jonas Söderström

  Is is possible to set the Max length of a ComboBox in wxruby? I have looked in the documentation but find nothing http://wxruby.rubyforge.org/doc/combobox.html But if i do my_combobox.methods.sort I get set_max_size and set_min_size in the list. But When I call it my_combobox.set_max_length(100) I only get undefined method 'set_max_length' for #<Wx::ComboBox:0x4d4a914> I've also tried to call it as a private method def my_combobox.max(i) set_max_length(i) end my_combobox.max(100) But with the same result. The issue I want to avoid is that if somebody pastes 6000+ characters in my Combobox the text becomes white.

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• Write data to an xml file.

  - by Bobby

  My aim is to write an XML file with few tags whose values are the regional language. I'm using Python to do this and using IDLE(Pythong GUI) for programming. While I try to write the words in an xmls file it gives the following error. UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-4: ordinal not in range(128) For now, I'm not using any xml writer library instead I'm opening a file "test.xml" and writing the data into it. This error is encountered by the line: f.write("\t\" + data + "\"). If I replace the above write statement with print statement then it prints the data properly on Python Shell. I'm reading the data from an excel file which is not in the UTF8,16, or 32 encoding formats. Its in some other format. cp1252 is reading the data properly. Any help in getting this data writtent oan xml would be highly appreciated. Thanks in advance. Bob

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• Prevent python from printing newline

  - by wrongusername

  I have this code in Python inputted = input("Enter in something: ") print("Input is {0}, including the return".format(inputted)) that outputs Enter in something: something Input is something , including the newline I am not sure what is happening; if I use variables that don't depend on user input, I do not get the newline after formatting with the variable. I suspect Python might be taking in the newline as input when I hit return. How can I make it so that the input does not include any newlines so that I may compare it to other strings/characters? (e.g. something == 'a')

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• Determining whether values can potentially match a regular expression, given more input

  - by Andreas Grech

  I am currently writing an application in JavaScript where I'm matching input to regular expressions, but I also need to find a way how to match strings to parts of the regular expressions. For example: var invalid = "x", potentially = "g", valid = "ggg", gReg = /^ggg$/; gReg.test(invalid); //returns false (correct) gReg.test(valid); //returns true (correct) Now I need to find a way to somehow determine that the value of the potentially variable doesn't exactly match the /^ggg$/ expression, BUT with more input, it potentially can! So for example in this case, the potentially variable is g, but if two more g's are appended to it, it will match the regular expression /^ggg$/ But in the case of invalid, it can never match the /^ggg$/ expression, no matter how many characters you append to it. So how can I determine if a string has or doesn't have potential to match a particular regular expression?

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• SQLite character encoding for Google Gears

  - by MHD

  We're using jQuery to get a JSON-string from our server (UTF-8 response, also UTF-8 request through jQuery) and put this JSON into a Google Gears WorkerPool. This workerpool processes the JSON and stores it into a Gears database (SQLite). It turns out that, apparently, SQLite stores data using iso-8859-1 rather than UTF-8. Since we're trying to store user names that might contain Cyrillic characters (and others that you might encounter in Europe), this goes horribly wrong. Can anyone tell me how to change the character encoding in either the Gears WorkerPool or the SQLite database that Gears employs? Of course, if I'm looking in the wrong direction with my problem, feel free to offer alternatives! Unfortunately, HTML5 isn't an option as we're supposed to support IE7 primarily.

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• How to decode numeric HTML entities in PHP

  - by Yuriy

  Hello, I'm trying to decode encoded long dash from numeric entity to string, but it seems that I can't find a function which can do this properly. The best that I found is mb_decode_numericentity(), however, for some reason it fails to decode long dash and some other special characters. $str = '–'; // <- ' & # 8211 ;' $str = mb_decode_numericentity ( $str , Array(0xFF, 0x2FFFF, 0, 0xFFFF) , 'ISO-8859-1'); This will return "?". Anyone knows how to solve this problem?

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• How do I make a textbox that only accepts numbers?

  - by Mykroft

  I have a windows forms app with a textbox control that I want to only accept integer values. In the past I've done this kind of validation by overloading the KeyPress event and just removing characters which didn't fit the specification. I've looked at the MaskedTextBox control but I'd like a more general solution that could work with perhaps a regular expression, or depend on the values of other controls. Ideally this would behave such that pressing a non numeric character would either produce no result or immediately provide the user with feedback about the invalid character.

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• How to get the cursor position in bash ?

  - by Julien Nicoulaud

  In a bash script, I want to get the cursor column in a variable. It looks like using the ANSI escape code {ESC}[6n is the only way to get it, for example the following way: # Query the cursor position echo -en '\033[6n' # Read it to a variable read -d R CURCOL # Extract the column from the variable CURCOL="${CURCOL##*;}" # We have the column in the variable echo $CURCOL Unfortunately, this prints characters to the standard output and I want to do it silently. Besides, this is not very portable... Is there a pure-bash way to achieve this ?

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• Problem with Access 2003 linking tables with SQL Server 2008 using ODBC

  - by tyguy840

  I am trying to link an Access 2003 DB to tables in a SQL Server 2008 database using ODBC. When I try to link to tables that have Primary Key established I get the following error message. " 'Pk_dbo.Batch_Claims' is not a valid name. Make sure that it does not include invalid characters or punctuation and that it is not to long. " Pk_dbo.Batch_Claims is the key value I see when looking at the table through SSMS. I have used Access for awhile but am somewhat new to SQL Server and connections using ODBC. Any help would be appreciated. Thanks

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• NSXMLParser rss issue NSXMLParserInvalidCharacterError

  - by Chris Van Buskirk

  NSXMLParserInvalidCharacterError # 9 This is the error I get when I hit a weird character (like quotes copied and pasted from word to the web form, that end up in the feed). The feed I am using is not giving an encoding, and their is no hope for me to get them to change that. This is all I get in the header: < ?xml version="1.0"? < rss version="2.0" What can I do about illegal characters when parsing feeds? Do I sweep the data prior to the parse? Is there something I am missing in the API? Has anyone dealt with this issue?

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