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• Java parsing UTF8

  - by Jack

  I have the following issue with a UTF8 files structured as following: FIELD1§FIELD2§FIELD3§FIELD4 Looking at hexadecimal values of the file it uses A7 to codify §. So according to this codify it should be UTF8, but it's strange because A7 7F so 1 byte shouldn't be enough to codify §. So I tried using directly a BufferedReader with a specified charset: BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(input), utf8)) but when I try to tokenize the string with SmartTokenizer st = new SmartTokenizer(toTokenize, "§") (the SmartTokenizer is a modified version of the StringTokenizer that keeps empty tokens) no splitting occurs, and if I try to print the string I obtain FIELD1?FIELD2?FIELD3?... so § used in the file is different from the one specified as a the delimiter, and it's not able to print out it too. So what's the problem here? Maybe the original file should use 2 bytes to store §?

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• Custom StyleCop rule not working as expected

  - by Jon

  I'm trying to write a StyleCop rule that disallows underscores anywhere. There is a rule to say that you cant have public string _myfield but I don't want underscores anywhere ie/method names, property names, method parameters. Below is my code but its not working properly. Can anyone suggest why? using Microsoft.StyleCop; using Microsoft.StyleCop.CSharp; namespace DotNetExtensions.StyleCop.Rules { [SourceAnalyzer(typeof(CsParser))] public class NoUnderScores : SourceAnalyzer { public override void AnalyzeDocument(CodeDocument document) { CsDocument csdocument = (CsDocument) document; if (csdocument.RootElement != null && !csdocument.RootElement.Generated) csdocument.WalkDocument(new CodeWalkerElementVisitor<object>(this.VisitElement), null, null); } private bool VisitElement(CsElement element, CsElement parentElement, object context) { if (!element.Generated) { foreach(var token in element.Tokens) { if (token.Text.Contains("_")) AddViolation(element, "NoUnderScores"); } } return true; } } }

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• Using Google AppEngine app as a OAuth provider

  - by Alistair

  Hi, I'm using the Google AppEngine 1.3.4 SDK which offers to allow your application to act as a OAuth service provider (http://code.google.com/appengine/docs/python/oauth/). Setting up a standard application on my localhost and using the following: Request URL /_ah/OAuthGetRequestToken Authorize URL /_ah/OAuthAuthorizeToken Access Token URL /_ah/OAuthGetAccessToken The client application just gets sent to a page requesting to grant OAuth access even though no user is logged in. Clicking 'Grant access' results in a message saying 'OAuth access granted' with no tokens or anything exchange. Can't see how this could work when it's not even prompting for a login. As this functionality is quite new I can't find much out there. I've created a OAuth provider before in Rails and know that you need a Consumer Key and Secret, something that seems to be lacking in GAE? Any ideas on how to get OAuth working in a sample GAE project are most welcome.

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• Javascript: Pass array as optional method args

  - by Dave Paroulek

  console.log takes a string and replaces tokens with values, for example: console.log("My name is %s, and I like %", 'Dave', 'Javascript') would print: My name is Dave, and I like Javascript I'd like to wrap this inside a method like so: function log(msg, values) { if(config.log == true){ console.log(msg, values); } } The 'values' arg might be a single value or several optional args. How can I accomplish this? If I call it like so: log("My name is %s, and I like %s", "Dave", "Javascript"); I get this (it doesn't recognize "Javascript" as a 3rd argument): My name is Dave, and I like %s If I call this: log("My name is %s, and I like %s", ["Dave", "Javascript"]); then it treats the second arg as an array (it doesn't expand to multiple args). What trick am I missing to get it to expand the optional args?

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• Trouble making OAuth signed requests

  - by behrk2

  Hello, I am able to successfully make non-authenticated and protected calls to the Netflix API. I am having a little trouble making signed requests to the catalog, however. Using the OAuth Test page, it is clear to me that my Base String is correct. My request URL is also correct, except for the oauth_signature. The oauth_signature is the only thing that differs. If I understand correctly, the only difference between a protected call and a signed call is that there are no tokens involved, and that I am appending on call parameters (such as term). So, I am using the exact same code that I use for my protected calls that I am for my signed calls, except my signature key ONLY contains my shared secret (with an ampersand sign on the end of it). It does not use the access token. Am I missing something here? Where else can I be going wrong? Thanks!

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• How to detect if certain characters are at the end of an NSString?

  - by Sheehan Alam

  Let's assume I can have the following strings: "hey @john..." "@john, hello" "@john(hello)" I am tokenizing the string to get every word separated by a space: [myString componentsSeparatedByString:@" "]; My array of tokens now contain: @john... @john, @john(hello) For these cases. How can I make sure only @john is tokenized, while retaining the trailing characters: ... , (hello) Note: I would like to be able to handle all cases of characters at the end of a string. The above are just 3 examples.

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• Deserialize unnamed json array into an object in c#

  - by rksprst

  Wondering how to deserialize the following string in c#: "[{\"access_token\":\"thisistheaccesstoken\"}]" I know how to do it if the json was: "{array=[{\"access_token\":\"thisistheaccesstoken\"}]}" I'd do it like this: public class AccessToken { public string access_token {get;set;} public DateTime expires { get; set; } } public class TokenReturn { public List<AccessToken> tokens { get; set; } } JavaScriptSerializer ser = new JavaScriptSerializer(); TokenReturn result = ser.Deserialize<TokenReturn>(responseFromServer); But without that array name, I'm not sure. Any suggestions? Thanks!

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• Amazon like Ecommerce site and Recommendation system

  - by Hellnar

  Hello, I am planning to implement a basic recommendation system that uses Facebook Connect or similar social networking site API's to connect a users profile, based on tags do an analyze and by using the results, generate item recommendations on my e-commerce site(works similar to Amazon). I do believe I need to divide parts into such: Fetching social networking data via API's.(Indeed user allows this) Analyze these data and generate tokes. By using information tokens, do item recommendations on my e-commerce site. Ie: I am a fan of "The Strokes" band on my Facebook account, system analyze this and recommending me "The Strokes Live" CD. For any part(fetching data, doing recommendation based on tags...), what algorithm and method would you recommend/ is used ? Thanks

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• Referencing Environment Variables in web.xml

  - by Udi Bar-On

  I'm pre-packaging a JSP web-app that relies on some file path settings found within web.xml. These settings are unknown at packaging time, because they reference a path the customer will set when deploying the entire application (of which the web-app is a management interface). It seems that the easiest way to avoid tokens and file modifications in my installer script, is to ask the user for an install location, set this location as an environment variable (e.g JAVA_HOME), and have web.xml always reference that variable. Is there a way to reference an environment variable value from within web.xml? Google searches lead to the J2EE method of SETTING environment variables from ejb xml files. This is not what I'm looking for. Thanks Udi

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• Document Similarity: Comparing two documents efficiently

  - by seanieb

  I have a loop that calculates the similarity between two documents. It collects all the tokens in a document and their scores, and places them in dictionary. It then compares the dictionaries This is what I have so far, it works, but is super slow: # Doc A cursor1.execute("SELECT token, tfidf_norm FROM index WHERE doc_id = %s", (docid[i][0])) doca = cursor1.fetchall() #convert tuple to a dictionary doca_dic = dict((row[0], row[1]) for row in doca) #Doc B cursor2.execute("SELECT token, tfidf_norm FROM index WHERE doc_id = %s", (docid[j][0])) docb = cursor2.fetchall() #convert tuple to a dictionary docb_dic = dict((row[0], row[1]) for row in docb) # loop through each token in doca and see if one matches in docb for x in doca_dic: if docb_dic.has_key(x): #calculate the similarity by summing the products of the tf-idf_norm similarity += doca_dic[x] * docb_dic[x] print "similarity" print similarity I'm pretty new to Python, hence this mess. I need to speed it up, any help would be appreciated. Thanks.

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• Prevent Visual Studio Web Test from changing request details

  - by keithwarren7

  I have a service that accepts Xmla queries for Analysis services, often times those queries themselves will have a string that contains a fragment that looks something like {{[Time].[Year].[All]}} Recording these requests works fine but when I try to re-run the test I get an error from the test runner... Request failed: Exception occurred: There is no context parameter with the name ' [Time].[Year].[All]' in the WebTestContext This was confusing for some time but when I asked VS to generate a coded version of the test I was able to see the problem a bit better. VS searches for the '{{' and '}}' tokens and makes changes, considering those areas to refer to Context parameters, the code looks like this.Context["\n\t[Time].[Year].[All]"].ToString() Anyone know how to instruct Visual Studio to not perform this replacement operation? Or another way around this issue?

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• Lexing partial SQL in C#

  - by Chris T

  I'd need to parse partial SQL queries (it's for a SQL injection auditing tool). For example '1' AND 1=1-- Should break down into tokens like [0] => [SQL_STRING, '1'] [1] => [SQL_AND] [2] => [SQL_INT, 1] [3] => [SQL_AND] [4] => [SQL_INT, 1] [5] => [SQL_COMMENT] [6] => [SQL_QUERY_END] Are their any at least lexers for SQL that I base mine off of or any good tools like bison for C# (though I'd rather not write my own grammar as I need to support most if not all the grammar of MySQL 5)

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• strtok wont accept: char *str

  - by bks

  strtok wont work correctly when using char *str as the first parameter (not the delimiters string). does it have something to do with the area that allocates strings in that notation? (which as far as i know, is a read-only area). thanks in advance example: //char* str ="- This, a sample string."; // <---doesn't work char str[] ="- This, a sample string."; // <---works char delims[] = " "; char * pch; printf ("Splitting string \"%s\" into tokens:\n",str); pch = strtok (str,delims); while (pch != NULL) { printf ("%s\n",pch); pch = strtok (NULL, delims); } return 0;

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• How do I generate different yyparse functions from lex/yacc for use in the same program?

  - by th

  Hi, I want to generate two separate parsing functions from lex/yacc. Normally yacc gives you a function yyparse() that you can call when you need to do some parsing, but I need to have several different yyparses each associated with different lexers and grammars. The man page seems to suggest the -p (prefix) flag, but this didn't work for me. I got errors from gcc that indicated that yylval was not properly being relabeled (i.e. it claims that several different tokens are not defined). Does anyone know the general rpocedure for generating these separate functions? thanks

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• How do you perform macro expansion within #ifdef?

  - by Malvineous

  Hi all, I have some fairly generic code which uses preprocessor macros to add a certain prefix onto other macros. This is a much simplified example of what happens: #define MY_VAR(x) prefix_##x "prefix_" is actually defined elsewhere, so it will be different each time the file is included. It works well, but now I have some code I would like to skip if one of the tokens doesn't exist, but this doesn't work: #if defined MY_VAR(hello) What I want it to expand to is this: #ifdef prefix_hello But I can't figure out how. I need to use the MY_VAR() macro to do the expansion, so I can't just hardcode the name. (It's actually for some testing code, the same code gets included with a different prefix each time to test a bunch of classes, and I want to skip a couple of tests for a handful of the classes.) Is this possible with the C++ preprocessor?

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• My jquery AJAX POST requests works without sending an Authenticity Token (Rails)

  - by dchua

  Hi all, Is there any provisions in rails that would allow all AJAX POST requests from the site to pass without an authenticity_token? I have a Jquery POST ajax call that calls a controller method, but I did not put any authenticity code in it and yet the call succeeds. My ApplicationController does have 'request_forgery_protection' and I've changed config.action_controller.consider_all_requests_local to false in my environments/development.rb I've also searched my code to ensure that I was not overloading ajaxSend to send out authenticity tokens. Is there some mechanism in play that disables the check? Now I'm not sure if my CSRF protection is working or not. I'm using Rails 2.3.5.

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• Fast way to set text format for a range of Text using TLF

  - by wezzy

  Hi, i have to set the text format for some tokens in a plain text. I'm trying to use the Text Layout Framework to improve the speed of the operation but i've founded that TLF is far slower (10X in my tests) than the old setTextFormat(). For each token i call this function: public function setTextFormat(format:TextLayoutFormat, begin:int, end:int):void{ var selection:SelectionState = new SelectionState(this._textFlow, begin, end, this._normalFormat); IEditManager(_textFlow.interactionManager).applyLeafFormat(format, selection); } is there any faster and clever way to do this operation ? Thanks

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• Is using GET with a tokenID for security a good idea?

  - by acidzombie24

  I was thinking about this and it appears POST only a little less vulnerable and somewhat harder (do to requiring the user to click something). I read about token ids and double submitted cookies and i am not sure what the difference is http://www.owasp.org/index.php/Cross-Site_Request_Forgery_%28CSRF%29_Prevention_Cheat_Sheet#Disclosure_of_Token_in_URL http://www.owasp.org/index.php/Cross-Site_Request_Forgery_%28CSRF%29_Prevention_Cheat_Sheet#Double_Submit_Cookies Right now i have the user id (PK in my table) and a session id so you cant simply change your cookie ID and act like someone else. Now it seems like i put the session id as a token in each of my forms and check them bc attackers cant guess these tokens. However i dislike the idea of putting the session id into the page for ppl to see. But really, is there a problem with that? short of having the user copy/pasting the html is there any attacks that can happen due to the session id being in plain view in html?

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• Basic Profanity Filter in Objective C for iPhone

  - by David van Dugteren

  How have you like minded individuals tackled the basic challenge of filtering profanity, obviously one can't possibly tackle every scenario but it would be nice to have one at the most basic level as a first line of defense. In Obj-c I've got NSString *tokens = [text componentsSeparatedByString:@" "]; And then I loop through each token to see if any of the keywords (I've got about 400 in a list) are found within each token. Realising False positives are also a problem, if the word is a perfect match, its flagged as profanity otherwise if more than 3 words with profanity are found without being perfect matches it is also flagged as profanity. Later on I will use a webservice that tackles the problem more precisely, but I really just need something basic. So if you wrote the word penis it would go yup naughty naughty, bad word written.

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• Python regular expression help

  - by dlw

  Hi SO, I can't seem to create the correct regular expression to extract the correct tokens from my string. Padding the beginning of the string with a space generates the correct output, but seems less than optimal: >>> import re >>> s = '-edge_0triggered a-b | -level_Sensitive c-d | a-b-c' >>> re.findall(r'\W(-[\w_]+)',' '+s) ['-edge_0triggered', '-level_Sensitive'] # correct output Here are some of the regular expressions I've tried, does anyone have a regex suggestion that doesn't involve changing the original string and generates the correct output >>> re.findall(r'(-[\w_]+)',s) ['-edge_0triggered', '-b', '-level_Sensitive', '-d', '-b', '-c'] >>> re.findall(r'\W(-[\w_]+)',s) ['-level_Sensitive'] Thanks -- DW

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• Using C# and gppg, how would I construct an abstract syntax tree?

  - by Rupert

  Is there a way to do this almost out-of-the-box? I could go and write a big method that would use the collected tokens to figure out which leaves should be put in which branches and in the end populate a TreeNode object, but since gppg already handled everything by using supplied regular expressions, I was wondering if there's an easier way? Even if not, any pointers as to how best to approach the problem of creating an AST would be appreciated. Apologies if I said anything silly, I'm only just beginning to play the compiler game. :)

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• How to code a batch file to copy and rename the most recently dated file?

  - by david.murtagh.keltie.com

  I'm trying to code a batch file to copy only the most recently dated file in a given folder to another directory on the local machine, and simultaneously rename it as it does. I've found a very similar question here http://stackoverflow.com/questions/97371/batch-script-to-copy-newest-file and have managed to cobble together the below code from other forums too, but have hit a brick wall as it only results in the batch file itself being copied to the destination folder. It doesn't matter to me where the batch file itself sits in order for this to run. The source folder is C:! BATCH and the destination folder is C:\DROP The code is below, apologies if this is a glaringly obvious answer but it's literally the first foray into coding batch files for me... Thanks! @echo off setLocal EnableDelayedExpansion pushd C:\! BATCH for /f "tokens=* delims= " %%G in ('dir/b/od') do (set newest=%%G) copy "!newest!" C:\DROP\ PAUSE

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• acts_as_taggable_on and auto_complete returning no results

  - by Sean Johnson

  I'm using acts_as_taggable_on in a model, and am trying to implement the auto_complete plugin. It seems as though I have everything hooked up correctly, but the search isn't returning any results. Here's what I have so far: In the view: <%= text_field_with_auto_complete(:link, :tag_list, {}, {:tokens => ','}) %> In the controller: def auto_complete_for_link_tag_list @tags = Link.tag_counts_on(:tags).where('tags.name LIKE ?', params[:link][:tag_list]) render :inline => "<%= auto_complete_result(@tags, 'name') %>", :layout => false logger.info "#{@tags.size} tags found." end The logger keeps returning 0 tags, and nothing shows up in the view (yeah, the layout includes the javascript defaults). Any thoughts or advice would be awesome.

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• Perl, efficient parsing of csv file

  - by Mike

  I'm working on a project that involves parsing a large csv formatted file in Perl and am looking to make things more efficient. My approach has been to split() the file by lines first, and then split() each line again by commas to get the fields. But this suboptimal since at least two passes on the data are required. (once to split by lines, then once again for each line). This is a very large file, so cutting processing in half would be a significant improvement to the entire application. My question is, what is the most time efficient means of parsing a large CSV file using only built in tools? note: Each line has a varying number of tokens, so we can't just ignore lines and split by commas only. Also we can assume fields will contain only alphanumeric ascii data (no special characters or other tricks). Also, i don't want to get into parallel processing, although that might work effectively.

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• ProgrammingError: (1146, "Table 'test_<DB>.<TABLE>' doesn't exist") when running unit test for Djang

  - by abigblackman

  I'm running a unit test using the Django framework and get this error. Running the actual code does not have this problem, running the unit tests creates a test database on the fly so I suspect the issue lies there. The code that throws the error looks like this member = Member.objects.get(email=email_address) and the model looks like class Member(models.Model): member_id = models.IntegerField(primary_key=True) created_on = models.DateTimeField(editable=False, default=datetime.datetime.utcnow()) flags = models.IntegerField(default=0) email = models.CharField(max_length=150, blank=True) phone = models.CharField(max_length=150, blank=True) country_iso = models.CharField(max_length=6, blank=True) location_id = models.IntegerField(null=True, blank=True) facebook_uid = models.IntegerField(null=True, blank=True) utc_offset = models.IntegerField(null=True, blank=True) tokens = models.CharField(max_length=3000, blank=True) class Meta: db_table = u'member' there's nothing too odd there i can see. the user running the tests has the same permissions to the database server as the user that runs the website where else can I look to see what's going wrong, why is this table not being created?

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