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  • How to send a stream (string) to print via a print server (Asp.Net)?

    - by user359706
    I developed a web application in asp.net and I would like to send a stream string print server. I know the ip of the printer connected to the network and the IP of the print server, but I do not want to send the stream directly to the printer and prefers to spend by the print server. I really look on the net, but I do not find a solution to my need. I look forward to your advice. Thank you.

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  • c# Lambda Expression built with LinqKit does not compile

    - by Frank Michael Kraft
    This lambda does not compile, but I do not understand why. using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Linq.Expressions; using LinqKit; namespace ConsoleApplication2 { class Program { static void Main(string[] args) { var barModel = new BarModel(); string id = "some"; Console.WriteLine(barModel.subFor(id).ToString()); // output: m => (True AndAlso (m.key == value(ConsoleApplication2.Bar`1+<>c__DisplayClass0[ConsoleApplication2.Model]).id)) Console.ReadKey(); var subworkitems = barModel.list.Where(barModel.subFor(id).Compile()); // Exception {"variable 'm' of type 'ConsoleApplication2.Model' referenced from scope '', but it is not defined"} Console.WriteLine(subworkitems.ToString()); Console.ReadKey(); } } class Bar<TModel> { public Bar(Expression<Func<TModel, string>> foreignKeyExpression) { _foreignKeyExpression = foreignKeyExpression; } private Expression<Func<TModel, string>> _foreignKeyExpression { get; set; } public Expression<Func<TModel, bool>> subFor(string id) { var ex = forTargetId(id); return ex; } public Expression<Func<TModel, bool>> forTargetId(String id) { var fc = _foreignKeyExpression; Expression<Func<TModel, bool>> predicate = m => true; var result = predicate.And(m => fc.Invoke(m) == id).Expand(); return result; } } class Model { public string key; public string value; } class BarModel : Bar<Model> { public List<Model> list; public BarModel() : base(m => m.key) { list = new List<Model>(); } } }

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  • Working with Reporting Services Filters–Part 1

    - by smisner
    There are two ways that you can filter data in Reporting Services. The first way, which usually provides a faster performance, is to use query parameters to apply a filter using the WHERE clause in a SQL statement. In that case, the structure of the filter depends upon the syntax recognized by the source database. Another way to filter data in Reporting Services is to apply a filter to a dataset, data region, or a group. Using this latter method, you can even apply multiple filters. However, the use of filter operators or the setup of multiple filters is not always obvious, so in this series of posts, I'll provide some more information about the configuration of filters. First, why not use query parameters exclusively for filtering? Here are a few reasons: You might want to apply a filter to part of the report, but not all of the report. Your dataset might retrieve data from a stored procedure, and doesn't allow you to pass a query parameter for filtering purposes. Your report might be set up as a snapshot on the report server and, in that case, cannot be dynamically filtered based on a query parameter. Next, let's look at how to set up a report filter in general. The process is the same whether you are applying the filter to a dataset, data region, or a group. When you go to the Filters page in the Properties dialog box for whichever of these items you selected (dataset, data region, group), you click the Add button to create a new filter. The interface looks like this: The Expression field is usually a field in the dataset, so to make it easier for you to make a selection,the drop-down list displays all of the current dataset fields. But notice the expression button to the right, which means that you can set up any type of expression-not just a dataset field. To the right of the expression button, you'll find a data type drop-down list. It's important to specify the correct data type for the field or expression you're using. Now for the operators. Here's a list of the options that you have: This Operator Performs This Action =, <>, >, >=, <, <=, Like Compares expression to value Top N, Bottom N Compares expression to Top (Bottom) set of N values (N = integer) Top %, Bottom % Compares expression to Top (Bottom) N percent of values (N = integer or float) Between Determines whether expression is between two values, inclusive In Determines whether expression is found in list of values Last, the Value is what you're comparing to the expression using the operator. The construction of a filter using some operators (=, <>, >, etc.) is fairly simple. If my dataset (for AdventureWorks data) has a Category field, and I have a parameter that prompts the user for a single category, I can set up a filter like this: Expression Data Type Operator Value [Category] Text = [@Category] But if I set the parameter to accept multiple values, I need to change the operator from = to In, just as I would have to do if I were using a query parameter. The parameter expression, [@Category], which translates to =Parameters!Category.Value, doesn’t need to change because it represents an array as soon as I change the parameter to allow multiple values. The “In” operator requires an array. With that in mind, let’s consider a variation on Value. Let’s say that I have a parameter that prompts the user for a particular year – and for simplicity’s sake, this parameter only allows a single value, and I have an expression that evaluates the previous year based on the user’s selection. Then I want to use these two values in two separate filters with an OR condition. That is, I want to filter either by the year selected OR by the year that was computed. If I create two filters, one for each year (as shown below), then the report will only display results if BOTH filter conditions are met – which would never be true. Expression Data Type Operator Value [CalendarYear] Integer = [@Year] [CalendarYear] Integer = =Parameters!Year.Value-1 To handle this scenario, we need to create a single filter that uses the “In” operator, and then set up the Value expression as an array. To create an array, we use the Split function after creating a string that concatenates the two values (highlighted in yellow) as shown below. Expression Data Type Operator Value =Cstr(Fields!CalendarYear.Value) Text In =Split( CStr(Parameters!Year.Value) + ”,” + CStr(Parameters!Year.Value-1) , “,”) Note that in this case, I had to apply a string conversion on the year integer so that I could concatenate the parameter selection with the calculated year. Pay attention to the second argument of the Split function—you must use a comma delimiter for the result to work correctly with the In operator. I also had to change the Expression value from [CalendarYear] (or =Fields!CalendarYear.Value) so that the expression would return a string that I could compare with the values in the string array. More fun with filter expressions in future posts!

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  • Building a &ldquo;real&rdquo; extension for Expression Blend

    - by Timmy Kokke
    .Last time I showed you how to get started building extensions for Expression Blend. Lets build a useful extension this time and go a bit deeper into Blend. Source of project  => here Compiled dll => here (extract into /extensions folder of Expression Blend)   The Extension When working on large Xaml files in Blend it’s often hard to find a specific control in the "Objects and Timeline Pane”. An extension that searches the active document and presents all elements that satisfy the query would be helpful. When the user starts typing a search query a search will be performed and the results are shown in the list. After the user selects an item in the results list, the control in the "Objects and Timeline Pane” will be selected. Below is a sketch of what it is going to look like. The Solution Create a new WPF User Control project as shown in the earlier tutorial in the Configuring the extension project section, but name it AdvancedSearch this time. Delete the default UserControl1.Xaml to clear the solution (a new user control will be added later thought, but adding a user control is easier then renaming one). Create the main entry point of the addin by adding a new class to the solution and naming this  AdvancedSearchPackage. Add a reference to Microsoft.Expression.Extensibility and to System.ComponentModel.Composition . Implement the IPackage interface and add the Export attribute from the MEF to the definition. While you’re at it. Add references to Microsoft.Expression.DesignSurface, Microsoft.Expression.FrameWork and Microsoft.Expression.Markup. These will be used later. The Load method from the IPackage interface is going to create a ViewModel to bind to from the UI. Add another class to the solution and name this AdvancedSearchViewModel. This class needs to implement the INotifyPropertyChanged interface to enable notifications to the view.  Add a constructor to the class that takes an IServices interface as a parameter. Create a new instance of the AdvancedSearchViewModel in the load method in the AdvanceSearchPackage class. The AdvancedSearchPackage class should looks like this now:   using System.ComponentModel.Composition; using Microsoft.Expression.Extensibility;   namespace AdvancedSearch { [Export(typeof(IPackage))] public class AdvancedSearchPackage:IPackage {   public void Load(IServices services) { new AdvancedSearchViewModel(services); }   public void Unload() { } } }   Add a new UserControl to the project and name this AdvancedSearchView. The View will be created by the ViewModel, which will pass itself to the constructor of the view. Change the constructor of the View to take a AdvancedSearchViewModel object as a parameter. Add a private field to store the ViewModel and set this field in the constructor. Point the DataContext of the view to the ViewModel. The View will look something like this now:   namespace AdvancedSearch { public partial class AdvancedSearchView:UserControl { private readonly AdvancedSearchViewModel _advancedSearchViewModel;   public AdvancedSearchView(AdvancedSearchViewModel advancedSearchViewModel) { _advancedSearchViewModel = advancedSearchViewModel; InitializeComponent(); this.DataContext = _advancedSearchViewModel; } } }   The View is going to be created in the constructor of the ViewModel and stored in a read only property.   public FrameworkElement View { get; private set; }   public AdvancedSearchViewModel(IServices services) { _services = services; View = new AdvancedSearchView(this); } The last thing the solution needs before we’ll wire things up is a new class, PossibleNode. This class will be used later to store the search results. The solution should look like this now:   Adding UI to the UI The extension should build and run now, although nothing is showing up in Blend yet. To enable the user to perform a search query add a TextBox and a ListBox to the AdvancedSearchView.xaml file. I’ve set the rows of the grid too to make them look a little better. Add the TextChanged event to the TextBox and the SelectionChanged event to the ListBox, we’ll need those later on. <Grid> <Grid.RowDefinitions> <RowDefinition Height="32" /> <RowDefinition Height="*" /> </Grid.RowDefinitions> <TextBox TextChanged="SearchQueryTextChanged" HorizontalAlignment="Stretch" Margin="4" Name="SearchQuery" VerticalAlignment="Stretch" /> <ListBox SelectionChanged="SearchResultSelectionChanged" HorizontalAlignment="Stretch" Margin="4" Name="SearchResult" VerticalAlignment="Stretch" Grid.Row="1" /> </Grid>   This will create a user interface like: To make the View show up in Blend it has to be registered with the WindowService. The GetService<T> method is used to get services from Blend, which are your entry points into Blend.When writing extensions you will encounter this method very often. In this case we’re asking for an IWindowService interface. The IWindowService interface serves events for changing windows and themes, is used for adding or removing resources and is used for registering and unregistering Palettes. All panes in Blend are palettes and are registered thru the RegisterPalette method. The first parameter passed to this method is a string containing a unique ID for the palette. This ID can be used to get access to the palette later. The second parameter is the View. The third parameter is a title for the pane. This title is shown when the pane is visible. It is also shown in the window menu of Blend. The last parameter is a KeyBinding. I have chosen Ctrl+Shift+F to call the Advanced Search pane. This value is also shown in the window menu of Blend.   services.GetService<IWindowService>().RegisterPalette( "AdvancedSearch", viewModel.View, "Advanced Search", new KeyBinding { Key = Key.F, Modifiers = ModifierKeys.Control | ModifierKeys.Shift } );   You can compiler and run now. After Blend starts you can hit Ctrl+Shift+F or go the windows menu to call the advanced search extension. Searching for controls The search has to be cleared on every change of the active document. The DocumentServices fires an event every time a new document is opened, a document is closed or another document view is selected. Add the following line to the constructor of the ViewModel to handle the ActiveDocumentChanged event:   _services.GetService<IDocumentService>().ActiveDocumentChanged += ActiveDocumentChanged;   And implement the ActiveDocumentChanged method:   private void ActiveDocumentChanged(object sender, DocumentChangedEventArgs e) { }   To get to the contents of the document we first need to get access to the “Objects and Timeline” pane. This pane is registered in the PaletteRegistry in the same way as this extension has registered itself. The palettes are accessible thru an associative array. All you need to provide is the Identifier of the palette you want. The Id of the “Objects and Timeline” pane is “Designer_TimelinePane”. I’ve included a list of the other default panes at the bottom of this article. Each palette has a Content property which can be cast to the type of the pane.   var timelinePane = (TimelinePane)_services.GetService<IWindowService>() .PaletteRegistry["Designer_TimelinePane"] .Content;   Add a private field to the top of the AdvancedSearchViewModel class to store the active SceneViewModel. The SceneViewModel is needed to set the current selection and to get the little icons for the type of control.   private SceneViewModel _activeSceneViewModel;   When the active SceneViewModel changes, the ActiveSceneViewModel is stored in this field. The list of possible nodes is cleared and an PropertyChanged event is fired for this list to notify the UI to clear the list. This will make the eventhandler look like this: private void ActiveDocumentChanged(object sender, DocumentChangedEventArgs e) { var timelinePane = (TimelinePane)_services.GetService<IWindowService>() .PaletteRegistry["Designer_TimelinePane"].Content;   _activeSceneViewModel = timelinePane.ActiveSceneViewModel; PossibleNodes = new List<PossibleNode>(); InvokePropertyChanged("PossibleNodes"); } The PossibleNode class used to store information about the controls found by the search. It’s a dumb data class with only 3 properties, the name of the control, the SceneNode and a brush used for the little icon. The SceneNode is the base class for every possible object you can create in Blend, like Brushes, Controls, Annotations, ResourceDictionaries and VisualStates. The entire PossibleNode class looks like this:   using System.Windows.Media; using Microsoft.Expression.DesignSurface.ViewModel;   namespace AdvancedSearch { public class PossibleNode { public string Name { get; set; } public SceneNode SceneNode { get; set; } public DrawingBrush IconBrush { get; set; } } }   Add these two methods to the AdvancedSearchViewModel class:   public void Search(string searchText) { } public void SelectElement(PossibleNode node){ }   Both these methods are going to be called from the view. The Search method performs the search and updates the PossibleNodes list.  The controls in the active document can be accessed thru TimeLineItemsManager class. This class contains a read only collection of TimeLineItems. By using a Linq query the possible nodes are selected and placed in the PossibleNodes list.   var timelineItemManager = new TimelineItemManager(_activeSceneViewModel); PossibleNodes = new List<PossibleNode>( (from d in timelineItemManager.ItemList where d.DisplayName.ToLowerInvariant().StartsWith( searchText.ToLowerInvariant()) select new PossibleNode() { IconBrush = d.IconBrush, SceneNode = d.SceneNode, Name = d.DisplayName }).ToList() ); InvokePropertyChanged(InternalConst.PossibleNodes);   The Select method is pretty straight forward. It contains two lines.The first to clear the selection. Otherwise the selected element would be added to the current selection. The second line selects the nodes. It is given a new array with the node to be selected.   _activeSceneViewModel.ClearSelections(); _activeSceneViewModel.SelectNodes(new[] { node.SceneNode });   The last thing that needs to be done is to wire the whole thing to the View. The two event handlers just call the Search and SelectElement methods on the ViewModel.   private void SearchQueryTextChanged(object sender, TextChangedEventArgs e) { _advancedSearchViewModel.Search(SearchQuery.Text); }   private void SearchResultSelectionChanged(object sender, SelectionChangedEventArgs e) { if(e.AddedItems.Count>0) { _advancedSearchViewModel.SelectElement(e.AddedItems[0] as PossibleNode); } }   The Listbox has to be bound to the PossibleNodes list and a simple DataTemplate is added to show the selection. The IconWithOverlay control can be found in the Microsoft.Expression.DesignSurface.UserInterface.Timeline.UI namespace in the Microsoft.Expression.DesignSurface assembly. The ListBox should look something like:   <ListBox SelectionChanged="SearchResultSelectionChanged" HorizontalAlignment="Stretch" Margin="4" Name="SearchResult" VerticalAlignment="Stretch" Grid.Row="1" ItemsSource="{Binding PossibleNodes}"> <ListBox.ItemTemplate> <DataTemplate> <StackPanel Orientation="Horizontal"> <tlui:IconWithOverlay Margin="2,0,10,0" Width="12" Height="12" SourceBrush="{Binding Path=IconBrush, Mode=OneWay}" /> <TextBlock Text="{Binding Name}"/> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox>   Compile and run. Inside Blend the extension could look something like below. What’s Next When you’ve got the extension running. Try placing breakpoints in the code and see what else is in there. There’s a lot to explore and build extension on. I personally would love an extension to search for resources. Last but not least, you can download the source of project here.  If you have any questions let me know. If you just want to use this extension, you can download the compiled dll here. Just extract the . zip into the /extensions folder of Expression Blend. Notes Target framework I ran into some issues when using the .NET Framework 4 Client Profile as a target framework. I got some strange error saying certain obvious namespaces could not be found, Microsoft.Expression in my case. If you run into something like this, try setting the target framework to .NET Framework 4 instead of the client version.   Identifiers of default panes Identifier Type Title Designer_TimelinePane TimelinePane Objects and Timeline Designer_ToolPane ToolPane Tools Designer_ProjectPane ProjectPane Projects Designer_DataPane DataPane Data Designer_ResourcePane ResourcePane Resources Designer_PropertyInspector PropertyInspector Properties Designer_TriggersPane TriggersPane Triggers Interaction_Skin SkinView States Designer_AssetPane AssetPane Assets Interaction_Parts PartsPane Parts Designer_ResultsPane ResultsPane Results

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  • Regular Expression for "AND"?

    - by Kevin
    Let's say I gave you the following text: allow_httpd_anon_write --> off allow_httpd_mod_auth_ntlm_winbind --> off allow_httpd_mod_auth_pam --> off allow_httpd_sys_script_anon_write --> off httpd_builtin_scripting --> on httpd_can_check_spam --> off httpd_can_network_connect --> off httpd_can_network_connect_cobbler --> off httpd_can_network_connect_db --> off httpd_can_network_memcache --> off httpd_can_network_relay --> off httpd_can_sendmail --> off httpd_dbus_avahi --> on httpd_enable_cgi --> on httpd_enable_ftp_server --> off httpd_enable_homedirs --> on httpd_execmem --> off httpd_read_user_content --> off httpd_setrlimit --> off httpd_ssi_exec --> off httpd_tmp_exec --> off httpd_tty_comm --> on httpd_unified --> on httpd_use_cifs --> off httpd_use_gpg --> off httpd_use_nfs --> off What I want to do is create a regular expression that can parse text like this looking for two or more words on the same line. For example, if I was looking for a SELinux boolean that covered "ftp" AND "home" on the same line, I would currently do the following: getsebool -a | grep -i ftp | grep -i home However, I am looking for a regular expression that does the same thing. Specifically, find all of the words in any order on a line...

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  • How can I use GPRename's regex feature to reinsert the matched-group into the 'replace'?

    - by David Thomas
    I've been using GPRename to batch-rename files; this is rather more efficient than individually correcting each file, but still seems to be less efficient than it might be, primarily because either I don't understand the regex syntax used, or because the regex implementation is incomplete1 Given a list of files of the following syntax: (01) - title of file1.avi (02) - title of file2.avi (03) - title of file3.avi I attempted to use the 'replace' (with the regex option selected, the case-sensitive option deselected): (\(\d{2}\)) The preview then shows (given that I've specified no 'replace with' option as yet): title of file1.avi title of file2.avi title of file3.avi Which is great, clearly the regex is identifying the correct group (the (01)). Now, what I was hoping to do (using the JavaScript syntax) in the 'replace with' option is use: $1 (I also tried using '$1', \1 and '\1') This was just to check that I could access the matched group, and it seems I can't, the matched group is, as I suppose might be expected, replaced with the literal replacement string. So, my question: is it possible to match a particular group of characters, in this case the numbers within the brackets, and then insert those into the replacement string? Therefore: (01) title of file1.avi (02) title of file2.avi (03) title of file3.avi Becomes: 01 title of file1.avi 02 title of file2.avi 03 title of file3.avi I absolutely suspect the former, personally.

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  • Slides and Code from my Silverlight MVVM Talk at DevConnections

    - by dwahlin
    I had a great time at the DevConnections conference in Las Vegas this year where Visual Studio 2010 and Silverlight 4 were launched. While at the conference I had the opportunity to give a full-day Silverlight workshop as well as 4 different talks and met a lot of people developing applications in Silverlight. I also had a chance to appear on a live broadcast of Channel 9 with John Papa, Ward Bell and Shawn Wildermuth, record a video with Rick Strahl covering jQuery versus Silverlight and record a few podcasts on Silverlight and ASP.NET MVC 2.  It was a really busy 4 days but I had a lot of fun chatting with people and hearing about different business problems they were solving with ASP.NET and/or Silverlight. Thanks to everyone who attended my sessions and took the time to ask questions and stop by to talk one-on-one. One of the talks I gave covered the Model-View-ViewModel pattern and how it can be used to build architecturally sound applications. Topics covered in the talk included: Understanding the MVVM pattern Benefits of the MVVM pattern Creating a ViewModel class Implementing INotifyPropertyChanged in a ViewModelBase class Binding a ViewModel declaratively in XAML Binding a ViewModel with code ICommand and ButtonBase commanding support in Silverlight 4 Using InvokeCommandBehavior to handle additional commanding needs Working with ViewModels and Sample Data in Blend Messaging support with EventBus classes, EventAggregator and Messenger My personal take on code in a code-beside file (I’m all in favor of it when used appropriately for message boxes, child windows, animations, etc.) One of the samples I showed in the talk was intended to teach all of the concepts mentioned above while keeping things as simple as possible.  The sample demonstrates quite a few things you can do with Silverlight and the MVVM pattern so check it out and feel free to leave feedback about things you like, things you’d do differently or anything else. MVVM is simply a pattern, not a way of life so there are many different ways to implement it. If you’re new to the subject of MVVM check out the following resources. I wish this talk would’ve been recorded (especially since my live and canned demos all worked :-)) but these resources will help get you going quickly. Getting Started with the MVVM Pattern in Silverlight Applications Model-View-ViewModel (MVVM) Explained Laurent Bugnion’s Excellent Talk at MIX10     Download sample code and slides from my DevConnections talk     For more information about onsite, online and video training, mentoring and consulting solutions for .NET, SharePoint or Silverlight please visit http://www.thewahlingroup.com.

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  • 301 redirect the home pages but keep sitemap pages same

    - by dasickle
    I have manually redirected my entire site. The only page that's left is the homepage. How do I redirect my homepage to the new site (http://example.com) but keep my sitemaps on the old domain (www.example.com)? Below is the structure for the sitemap urls: Main - http://www.example.com/sitemap.xml Sub - http://www.example.com/sitemap-pt-post-2013-07.xml (Month and year are the only parts that change) I have tried this and the site redirects but GWT tells me that I dont have a 301 set: RewriteEngine on RewriteCond %{HTTP_HOST} olddomain\.com [NC] RewriteCond %{REQUEST_URI} ^/$ Rewriterule ^(.*)$ http://newdomain.com/ [L,R=301] P.S. I want to do this so that I could track the 301 in GWT and etc. until things a finalized.

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  • Code from my DevConnections Talks and Workshop

    - by dwahlin
    Thanks to everyone who attended my sessions at DevConnections Las Vegas. I had a great time meeting new people, discussing business problems and solutions and interacting. Here’s the code and slides for the sessions.  For those that came to the full-day Silverlight workshop I’ve included the slides that didn’t get printed plus a ton of code to help you get started with various Silverlight topics.   Get Started Building Silverlight Applications Building Architecturally Sound Silverlight Applications Using WCF RIA Services in Silverlight Applications (will post soon) Silverlight Data Integration Options and Usage Scenarios Silverlight Workshop Code

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  • SSIS Design Patterns Training in London 8-11 Sep!

    - by andyleonard
    A few seats remain for my course SQL Server Integration Services 2012 Design Patterns to be delivered in London 8-11 Sep 2014. Register today to learn more about: New features in SSIS 2012 and 2014 Advanced patterns for loading data warehouses Error handling The (new) Project Deployment Model Scripting in SSIS The (new) SSIS Catalog Designing custom SSIS tasks Executing, managing, monitoring, and administering SSIS in the enterprise Business Intelligence Markup Language (Biml) BimlScript ETL Instrumentation...(read more)

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  • ZF2 Zend\Db Insert/Update Using Mysql Expression (Zend\Db\Sql\Expression?)

    - by Aleross
    Is there any way to include MySQL expressions like NOW() in the current build of ZF2 (2.0.0beta4) through Zend\Db and/or TableGateway insert()/update() statements? Here is a related post on the mailing list, though it hasn't been answered: http://zend-framework-community.634137.n4.nabble.com/Zend-Db-Expr-and-Transactions-in-ZF2-Db-td4472944.html It appears that ZF1 used something like: $data = array( 'update_time' => new \Zend\Db\Expr("NOW()") ); And after looking through Zend\Db\Sql\Expression I tried: $data = array( 'update_time' => new \Zend\Db\Sql\Expression("NOW()"), ); But get the following error: Catchable fatal error: Object of class Zend\Db\Sql\Expression could not be converted to string in /var/www/vendor/ZF2/library/Zend/Db/Adapter/Driver/Pdo/Statement.php on line 256 As recommended here: http://zend-framework-community.634137.n4.nabble.com/ZF2-beta3-Zend-Db-Sql-Insert-new-Expression-now-td4536197.html I'm currently just setting the date with PHP code, but I'd rather use the MySQL server as the single source of truth for date/times. $data = array( 'update_time' => date('Y-m-d H:i:s'), ); Thanks, I appreciate any input!

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  • Parsing an arithmetic expression and building a tree from it in Java

    - by ChocolateBear
    Hi, I needed some help with creating custom trees given an arithmetic expression. Say, for example, you input this arithmetic expression: (5+2)*7 The result tree should look like: * / \ + 7 / \ 5 2 I have some custom classes to represent the different types of nodes, i.e. PlusOp, LeafInt, etc. I don't need to evaluate the expression, just create the tree, so I can perform other functions on it later. Additionally, the negative operator '-' can only have one child, and to represent '5-2', you must input it as 5 + (-2). Some validation on the expression would be required to ensure each type of operator has the correct the no. of arguments/children, each opening bracket is accompanied by a closing bracket. Also, I should probably mention my friend has already written code which converts the input string into a stack of tokens, if that's going to be helpful for this. I'd appreciate any help at all. Thanks :) (I read that you can write a grammar and use antlr/JavaCC, etc. to create the parse tree, but I'm not familiar with these tools or with writing grammars, so if that's your solution, I'd be grateful if you could provide some helpful tutorials/links for them.)

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  • I need a fast runtime expression parser

    - by Chris Lively
    I need to locate a fast, lightweight expression parser. Ideally I want to pass it a list of name/value pairs (e.g. variables) and a string containing the expression to evaluate. All I need back from it is a true/false value. The types of expressions should be along the lines of: varA == "xyz" and varB==123 Basically, just a simple logic engine whose expression is provided at runtime. UPDATE At minimum it needs to support ==, !=, , =, <, <= Regarding speed, I expect roughly 5 expressions to be executed per request. We'll see somewhere in the vicinity of 100/requests a second. Our current pages tend to execute in under 50ms. Usually there will only be 2 or 3 variables involved in any expression. However, I'll need to load approximately 30 into the parser prior to execution. UPDATE 2012/11/5 Update about performance. We implemented nCalc nearly 2 years ago. Since then we've expanded it's use such that we average 40+ expressions covering 300+ variables on post backs. There are now thousands of post backs occurring per second with absolutely zero performance degradation. We've also extended it to include a handful of additional functions, again with no performance loss. In short, nCalc met all of our needs and exceeded our expectations.

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  • Position:absolute

    - by Andrew
    I have I have a div called logo. I want the logo to be on top of other areas and to overlap into the the preface top of a drupal site, the logo currently sits in the header area. I looked up position absolute and I think that what I need to use but when I use position absolute the logo disappears, I can see it if I use position fixed, relative etc. I thought the logo was being hidden because I was not using a z-index but even with that I cant see the logo. What am I doing wrong? #logo { position: absolute; top: 30px; /* 30 pixels from the top of the page */ left: 80px; /* 80 pixels from the left hand side */ z-index:1099; border: 1px solid red; /* So we can see what is happening */ } Also does anyone know of a really good free online css course? Here is some additional information, namely the CSS and the page.tpl.php: <?php // $Id: page.tpl.php,v 1.1.2.5 2010/04/08 07:02:59 sociotech Exp $ ?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="<?php print $language->language; ?>" xml:lang="<?php print $language->language; ?>"> <head> <title><?php print $head_title; ?></title> <?php print $head; ?> <?php print $styles; ?> <?php print $setting_styles; ?> <!--[if IE 8]> <?php print $ie8_styles; ?> <![endif]--> <!--[if IE 7]> <?php print $ie7_styles; ?> <![endif]--> <!--[if lte IE 6]> <?php print $ie6_styles; ?> <![endif]--> <?php print $local_styles; ?> <?php print $scripts; ?> </head> <body id="<?php print $body_id; ?>" class="<?php print $body_classes; ?>"> <div id="page" class="page"> <div id="page-inner" class="page-inner"> <div id="skip"> <a href="#main-content-area"><?php print t('Skip to Main Content Area'); ?></a> </div> <!-- header-top row: width = grid_width --> <?php print theme('grid_row', $header_top, 'header-top', 'full-width', $grid_width); ?> <!-- header-group row: width = grid_width --> <div id="header-group-wrapper" class="header-group-wrapper full-width"> <div id="header-group" class="header-group row <?php print $grid_width; ?>"> <div id="header-group-inner" class="header-group-inner inner clearfix"> <?php print theme('grid_block', theme('links', $secondary_links), 'secondary-menu'); ?> <?php print theme('grid_block', $search_box, 'search-box'); ?> <?php if ($logo || $site_name || $site_slogan): ?> <div id="header-site-info" class="header-site-info block"> <div id="header-site-info-inner" class="header-site-info-inner inner"> <?php if ($logo): ?> <div id="logo"> <a href="<?php print check_url($front_page); ?>" title="<?php print t('Home'); ?>"><img src="<?php print $logo; ?>" alt="<?php print t('Home'); ?>" /></a> </div> <?php endif; ?> <?php if ($site_name || $site_slogan): ?> <div id="site-name-wrapper" class="clearfix"> <?php if ($site_name): ?> <span id="site-name"><a href="<?php print check_url($front_page); ?>" title="<?php print t('Home'); ?>"><?php print $site_name; ?></a></span> <?php endif; ?> <?php if ($site_slogan): ?> <span id="slogan"><?php print $site_slogan; ?></span> <?php endif; ?> </div><!-- /site-name-wrapper --> <?php endif; ?> </div><!-- /header-site-info-inner --> </div><!-- /header-site-info --> <?php endif; ?> <?php print $header; ?> <?php print theme('grid_block', $primary_links_tree, 'primary-menu'); ?> </div><!-- /header-group-inner --> </div><!-- /header-group --> </div><!-- /header-group-wrapper --> <!-- preface-top row: width = grid_width --> <?php print theme('grid_row', $preface_top, 'preface-top', 'full-width', $grid_width); ?> <!-- main row: width = grid_width --> <div id="main-wrapper" class="main-wrapper full-width<?php if ($is_front) { print ' front'; } ?>"> <div id="main" class="main row <?php print $grid_width; ?>"> <div id="main-inner" class="main-inner inner clearfix"> <?php print theme('grid_row', $sidebar_first, 'sidebar-first', 'nested', $sidebar_first_width); ?> <!-- main group: width = grid_width - sidebar_first_width --> <div id="main-group" class="main-group row nested <?php print $main_group_width; ?>"> <div id="main-group-inner" class="main-group-inner inner"> <?php print theme('grid_row', $preface_bottom, 'preface-bottom', 'nested'); ?> <div id="main-content" class="main-content row nested"> <div id="main-content-inner" class="main-content-inner inner"> <!-- content group: width = grid_width - (sidebar_first_width + sidebar_last_width) --> <div id="content-group" class="content-group row nested <?php print $content_group_width; ?>"> <div id="content-group-inner" class="content-group-inner inner"> <?php print theme('grid_block', $breadcrumb, 'breadcrumbs'); ?> <?php if ($content_top || $help || $messages): ?> <div id="content-top" class="content-top row nested"> <div id="content-top-inner" class="content-top-inner inner"> <?php print theme('grid_block', $help, 'content-help'); ?> <?php print theme('grid_block', $messages, 'content-messages'); ?> <?php print $content_top; ?> </div><!-- /content-top-inner --> </div><!-- /content-top --> <?php endif; ?> <div id="content-region" class="content-region row nested"> <div id="content-region-inner" class="content-region-inner inner"> <a name="main-content-area" id="main-content-area"></a> <?php print theme('grid_block', $tabs, 'content-tabs'); ?> <div id="content-inner" class="content-inner block"> <div id="content-inner-inner" class="content-inner-inner inner"> <?php if ($title): ?> <h1 class="title"><?php print $title; ?></h1> <?php endif; ?> <?php if ($content): ?> <div id="content-content" class="content-content"> <?php print $content; ?> <?php print $feed_icons; ?> </div><!-- /content-content --> <?php endif; ?> </div><!-- /content-inner-inner --> </div><!-- /content-inner --> </div><!-- /content-region-inner --> </div><!-- /content-region --> <?php print theme('grid_row', $content_bottom, 'content-bottom', 'nested'); ?> </div><!-- /content-group-inner --> </div><!-- /content-group --> <?php print theme('grid_row', $sidebar_last, 'sidebar-last', 'nested', $sidebar_last_width); ?> </div><!-- /main-content-inner --> </div><!-- /main-content --> <?php print theme('grid_row', $postscript_top, 'postscript-top', 'nested'); ?> </div><!-- /main-group-inner --> </div><!-- /main-group --> </div><!-- /main-inner --> </div><!-- /main --> </div><!-- /main-wrapper --> <!-- postscript-bottom row: width = grid_width --> <?php print theme('grid_row', $postscript_bottom, 'postscript-bottom', 'full-width', $grid_width); ?> <!-- footer row: width = grid_width --> <?php print theme('grid_row', $footer, 'footer', 'full-width', $grid_width); ?> <!-- footer-message row: width = grid_width --> <div id="footer-message-wrapper" class="footer-message-wrapper full-width"> <div id="footer-message" class="footer-message row <?php print $grid_width; ?>"> <div id="footer-message-inner" class="footer-message-inner inner clearfix"> <?php print theme('grid_block', $footer_message, 'footer-message-text'); ?> </div><!-- /footer-message-inner --> </div><!-- /footer-message --> </div><!-- /footer-message-wrapper --> </div><!-- /page-inner --> </div><!-- /page --> <?php print $closure; ?> </body> </html> CSS /* $Id: style.css,v 1.1.2.11 2010/07/02 22:11:04 sociotech Exp $ */ /* Margin, Padding, Border Resets -------------------------------------------------------------- */ html, body, div, span, p, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, form, fieldset, input, textarea { margin: 0; padding: 0; } img, abbr, acronym { border: 0; } /* HTML Elements -------------------------------------------------------------- */ p { margin: 1em 0; } h1, h2, h3, h4, h5, h6 { margin: 0 0 0.5em 0; } h1 { color: white !important; text-shadow: black !important; } ul, ol, dd { margin-bottom: 1.5em; margin-left: 2em; /* LTR */ } li ul, li ol { margin-bottom: 0; } ul { list-style-type: disc; } ol { list-style-type: decimal; } a { margin: 0; padding: 0; text-decoration: none; } a:link, a:visited { } a:hover, a:focus, a:active { text-decoration: underline; } blockquote { } hr { height: 1px; border: 1px solid gray; } /* tables */ table { border-spacing: 0; width: 100%; } tr.even td, tr.odd td { background-color: #FFFFFF; border: 1px solid #dbdbdb; } caption { text-align: left; } th { margin: 0; padding: 0 10px 0 0; } th.active img { display: inline; } thead th { padding-right: 10px; } td { margin: 0; padding: 3px; } /* Remove grid block styles from Drupal's table ".block" class */ td.block { border: none; float: none; margin: 0; } /* Maintain light background/dark text on dragged table rows */ tr.drag td, tr.drag-previous td { background: #FFFFDD; color: #000; } /* Accessibility /-------------------------------------------------------------- */ /* skip-link to main content, hide offscreen */ #skip a, #skip a:hover, #skip a:visited { height: 1px; left: 0px; overflow: hidden; position: absolute; top: -500px; width: 1px; } /* make skip link visible when selected */ #skip a:active, #skip a:focus { background-color: #fff; color: #000; height: auto; padding: 5px 10px; position: absolute; top: 0; width: auto; z-index: 99; } #skip a:hover { text-decoration: none; } /* Helper Classes /-------------------------------------------------------------- */ .hide { display: none; visibility: hidden; } .left { float: left; } .right { float: right; } .clear { clear: both; } /* clear floats after an element */ /* (also in ie6-fixes.css, ie7-fixes.css) */ .clearfix:after, .clearfix .inner:after { clear: both; content: "."; display: block; font-size: 0; height: 0; line-height: 0; overflow: auto; visibility: hidden; } /* Grid Layout Basics (specifics in 'gridnn_x.css') -------------------------------------------------------------- */ /* center page and full rows: override this for left-aligned page */ .page, .row { margin: 0 auto; } /* fix layout/background display on floated elements */ .row, .nested, .block { overflow: hidden; } /* full-width row wrapper */ div.full-width { width: 100%; } /* float, un-center & expand nested rows */ .nested { float: left; /* LTR */ margin: 0; width: 100%; } /* allow Superfish menus to overflow */ #sidebar-first.nested, #sidebar-last.nested, div.superfish { overflow: visible; } /* sidebar layouts */ .sidebars-both-first .content-group { float: right; /* LTR */ } .sidebars-both-last .sidebar-first { float: right; /* LTR */ } /* Grid Mask Overlay -------------------------------------------------------------- */ #grid-mask-overlay { display: none; left: 0; opacity: 0.75; position: absolute; top: 0; width: 100%; z-index: 997; } #grid-mask-overlay .row { margin: 0 auto; } #grid-mask-overlay .block .inner { background-color: #e3fffc; outline: none; } .grid-mask #grid-mask-overlay { display: block; } .grid-mask .block { overflow: visible; } .grid-mask .block .inner { outline: #f00 dashed 1px; } #grid-mask-toggle { background-color: #777; border: 2px outset #fff; color: #fff; cursor: pointer; font-variant: small-caps; font-weight: normal; left: 0; -moz-border-radius: 5px; padding: 0 5px 2px 5px; position: absolute; text-align: center; top: 22px; -webkit-border-radius: 5px; z-index: 998; } #grid-mask-toggle.grid-on { border-style: inset; font-weight: bold; } /* Site Info -------------------------------------------------------------- */ #header-site-info { width: auto; } #site-name-wrapper { float: left; /* LTR */ } #site-name, #slogan { display: block; } #site-name a:link, #site-name a:visited, #site-name a:hover, #site-name a:active { text-decoration: none; } #site-name a { outline: 0; } /* Regions -------------------------------------------------------------- */ /* Header Regions -------------------------------------------------------------- */ #header-group { overflow: visible; } /* Content Regions (Main) -------------------------------------------------------------- */ .node-bottom { margin: 1.5em 0 0 0; } /* Clear floats on regions -------------------------------------------------------------- */ #header-top-wrapper, #header-group-wrapper, #preface-top-wrapper, #main-wrapper, #preface-bottom, #content-top, #content-region, #content-bottom, #postscript-top, #postscript-bottom-wrapper, #footer-wrapper, #footer-message-wrapper { clear: both; } /* Drupal Core /-------------------------------------------------------------- */ /* Lists /-------------------------------------------------------------- */ .item-list ul li { margin: 0; } .block ul, .block ol { margin-left: 2em; /* LTR */ padding: 0; } .content-inner ul, .content-inner ol { margin-bottom: 1.5em; } .content-inner li ul, .content-inner li ol { margin-bottom: 0; } .block ul.links { margin-left: 0; /* LTR */ } /* Menus /-------------------------------------------------------------- */ ul.menu li, ul.links li { margin: 0; padding: 0; } /* Primary Menu /-------------------------------------------------------------- */ /* use ID to override overflow: hidden for .block, dropdowns should always be visible */ #primary-menu { overflow: visible; } /* remove left margin from primary menu list */ #primary-menu.block ul { margin-left: 0; /* LTR */ } /* remove bullets, float left */ .primary-menu ul li { float: left; /* LTR */ list-style: none; position: relative; } /* style links, and unlinked parent items (via Special Menu Items module) */ .primary-menu ul li a, .primary-menu ul li .nolink { display: block; padding: 0.75em 1em; text-decoration: none; } /* Add cursor style for unlinked parent menu items */ .primary-menu ul li .nolink { cursor: default; } /* remove outline */ .primary-menu ul li:hover, .primary-menu ul li.sfHover, .primary-menu ul a:focus, .primary-menu ul a:hover, .primary-menu ul a:active { outline: 0; } /* Secondary Menu /-------------------------------------------------------------- */ .secondary-menu-inner ul.links { margin-left: 0; /* LTR */ } /* Skinr styles /-------------------------------------------------------------- */ /* Skinr selectable helper classes */ .fusion-clear { clear: both; } div.fusion-right { float: right; /* LTR */ } div.fusion-center { float: none; margin-left: auto; margin-right: auto; } .fusion-center-content .inner { text-align: center; } .fusion-center-content .inner ul.menu { display: inline-block; text-align: center; } /* required to override drupal core */ .fusion-center-content #user-login-form { text-align: center; } .fusion-right-content .inner { text-align: right; /* LTR */ } /* required to override drupal core */ .fusion-right-content #user-login-form { text-align: right; /* LTR */ } /* Large, bold callout text style */ .fusion-callout .inner { font-weight: bold; } /* Extra padding on block */ .fusion-padding .inner { padding: 30px; } /* Adds 1px border and padding */ .fusion-border .inner { border-width: 1px; border-style: solid; padding: 10px; } /* Single line menu with separators */ .fusion-inline-menu .inner ul.menu { margin-left: 0; /* LTR */ } .fusion-inline-menu .inner ul.menu li { border-right-style: solid; border-right-width: 1px; display: inline; margin: 0; padding: 0; white-space: nowrap; } .fusion-inline-menu .inner ul.menu li a { padding: 0 8px 0 5px; /* LTR */ } .fusion-inline-menu .inner ul li.last { border: none; } /* Hide second level (and beyond) menu items */ .fusion-inline-menu .inner ul li.expanded ul { display: none; } /* Multi-column menu style with bolded top level menu items */ .fusion-multicol-menu .inner ul { margin-left: 0; /* LTR */ text-align: left; /* LTR */ } .fusion-multicol-menu .inner ul li { border-right: none; display: block; font-weight: bold; } .fusion-multicol-menu .inner ul li.last { border-right: none; } .fusion-multicol-menu .inner ul li.last a { padding-right: 0; /* LTR */ } .fusion-multicol-menu .inner ul li.expanded, .fusion-multicol-menu .inner ul li.leaf { float: left; /* LTR */ list-style-image: none; margin-left: 50px; /* LTR */ } .fusion-multicol-menu .inner ul.menu li.first { margin-left: 0; /* LTR */ } .fusion-multicol-menu .inner ul li.expanded li.leaf { float: none; margin-left: 0; /* LTR */ } .fusion-multicol-menu .inner ul li.expanded ul { display: block; margin-left: 0; /* LTR */ } .fusion-multicol-menu .inner ul li.expanded ul li { border: none; margin-left: 0; /* LTR */ text-align: left; /* LTR */ } .fusion-multicol-menu .inner ul.menu li ul.menu li { font-weight: normal; } /* Split list across multiple columns */ .fusion-2-col-list .inner .item-list ul li, .fusion-2-col-list .inner ul.menu li { float: left; /* LTR */ width: 50%; } .fusion-3-col-list .inner .item-list ul li, .fusion-3-col-list .inner ul.menu li { float: left; /* LTR */ width: 33%; } .fusion-2-col-list .inner .item-list ul.pager li, .fusion-3-col-list .inner .item-list ul.pager li { float: none; width: auto; } /* List with bottom border Fixes a common issue when list items have bottom borders and appear to be doubled when nested lists end and begin. This removes the extra border-bottom */ .fusion-list-bottom-border .inner ul li { list-style: none; list-style-type: none; list-style-image: none; } .fusion-list-bottom-border .inner ul li, .fusion-list-bottom-border .view-content div.views-row { padding: 0 0 0 10px; /* LTR */ border-bottom-style: solid; border-bottom-width: 1px; line-height: 216.7%; /* 26px */ } .fusion-list-bottom-border .inner ul { margin: 0; } .fusion-list-bottom-border .inner ul li ul { border-bottom-style: solid; border-bottom-width: 1px; } .fusion-list-bottom-border .inner ul li ul li.last { border-bottom-style: solid; border-bottom-width: 1px; margin-bottom: -1px; margin-top: -1px; } #views_slideshow_singleframe_pager_slideshow-page_2 .pager-item { display:block; } #views_slideshow_singleframe_pager_slideshow-page_2 { position:absolute; right:0; top:0; } #header-group-wrapper { background: none; } #page { background-color:#F3F3F3; background-image:url('/sites/all/themes/fusion/fusion_core/images/runswithgradient.jpg'); background-repeat:no-repeat; background-attachment: fixed; width: auto; } #views_slideshow_singleframe_pager_slideshow-page_2 div a img { top:0px; height:60px; width:80px; padding-right:10px; padding-bottom:19px; } #mycontent{ width: 720px; } .product-body { -moz-border-radius: 4px 4px 4px 4px; margin: 0 0 20px; overflow: hidden; padding: 20px; background: none repeat scroll 0 0 #F7F7F7; border: 1px solid #000000; border-style:solid; border-width:thin; color:#000000; } #product-details { background: none repeat scroll 0 0 #F7F7F7 !important; border: 1px solid #000000 !important; color: #8E8E8E; } #logo { position: relative; top: 30px; /* 30 pixels from the top of the page */ left: 80px; /* 80 pixels from the left hand side */ z-index:1099; border: 1px solid red; /* So we can see what is happening */ } #breadcrumbs-inner { background: none; border-color: transparent; border-style: none; } #block-views-new_products-block_1{ height:200px; } /* List with no bullet and extra padding This is a common style for menus, which removes the bullet and adds more vertical padding for a simple list style */ .fusion-list-vertical-spacing .inner ul, .fusion-list-vertical-spacing div.views-row-first { margin-left: 0; margin-top: 10px; } .fusion-list-vertical-spacing .inner ul li, .fusion-list-vertical-spacing div.views-row { line-height: 133.3%; /* 16px/12px */ margin-bottom: 10px; padding: 0; } .fusion-list-vertical-spacing .inner ul li { list-style: none; list-style-image: none; list-style-type: none; } .fusion-list-vertical-spacing .inner ul li ul { margin-left: 10px; /* LTR */ } /* Bold all links */ .fusion-bold-links .inner a { font-weight: bold; } /* Float imagefield images left and add margin */ .fusion-float-imagefield-left .field-type-filefield, .fusion-float-imagefield-left .image-insert, .fusion-float-imagefield-left .imagecache { float: left; /* LTR */ margin: 0 15px 15px 0; /* LTR */ } /* Clear float on new Views item so each row drops to a new line */ .fusion-float-imagefield-left .views-row { clear: left; /* LTR */ } /* Float imagefield images right and add margin */ .fusion-float-imagefield-right .field-type-filefield, .fusion-float-imagefield-right .image-insert .fusion-float-imagefield-right .imagecache { float: right; /* LTR */ margin: 0 0 15px 15px; /* LTR */ } /* Clear float on new Views item so each row drops to a new line */ .fusion-float-imagefield-right .views-row { clear: right; /* LTR */ } /* Superfish: all menus */ .sf-menu li { list-style: none; list-style-image: none; list-style-type: none; } /* Superfish: vertical menus */ .superfish-vertical { position: relative; z-index: 9; } ul.sf-vertical { background: #fafafa; margin: 0; width: 100%; } ul.sf-vertical li { border-bottom: 1px solid #ccc; font-weight: bold; line-height: 200%; /* 24px */ padding: 0; width: 100%; } ul.sf-vertical li a:link, ul.sf-vertical li a:visited, ul.sf-vertical li .nolink { margin-left: 10px; padding: 2px; } ul.sf-vertical li a:hover, ul.sf-vertical li a.active { text-decoration: underline; } ul.sf-vertical li ul { background: #fafafa; border-top: 1px solid #ccc; margin-left: 0; width: 150px; } ul.sf-vertical li ul li.last { border-top: 1px solid #ccc; margin-bottom: -1px; margin-top: -1px; } ul.sf-vertical li ul { border-top: none; padding: 4px 0; } ul.sf-vertical li ul li { border-bottom: none; line-height: 150%; /* 24px */ More below but I can't paste that much Thanks for the suggestion I've tried this #header-group { position: relative; z-index: 9; } #logo { position: abosolute; top: 230px; /* 30 pixels from the top of the page */ left: 10px; /* 80 pixels from the left hand side */ z-index: 999; } but it's not working. I've taken a screen shot of the div to show the structure. http://i.stack.imgur.com/ff4DP.png

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  • Window Server 2003 Print spooler

    - by mikenardone
    Hello Everyone in ServerFault, I am new to this website. I have been coming here to fix my own problems. I believe everyone here on this website is great. I could not find this issue anywhere. I am sure that other people had this issue. I have IBM X3850 48GB ram 2 TB of hard drives, four NIC cards. 2 Xeon 1.7 CPU. I am running VMware ESX. I believe that was the paid version if not then it is ESXI. I have 7 Servers on this server. All Window server 2003. On one of the Servers I keep on getting CPU is at 100% . So when I go into task manager and look at the processes that is going on, it is my print spooler. I have 30 different HP laserjet printers and two copiers from HP. I believe it is an driver issue, but I can't figure with one is doing this. Is there any programs for window server 2003 that finds bad print drivers.

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  • Print from Linux to Windows networked printer

    - by wonkothenoob
    I want to print from a Debian (Lenny) workstation to a Windows networked printer. I'm not even sure what type of Windows network this is. Our tech-support is friendly but doesn't want to get involved with supporting Linux. I need to use it for a variety of reasons and am completely stumped because I know nothing about Windows networking. They gave me URI smb://msprint.ourorg.edu as the "address" of the printer and further confirmed that the domain is "OURORG" and the share is "PHYS-PRI". I've installed CUPS and made sure that it's running as a daemon, I've clicked on the system-config-printer[1] icon, selected the printer as a Windows printer shared via SAMBA and entered the above URI. Attempting to print a testpage just sees it sit in the queue. I attempted to see if I could access the share using two other methods. Method 1. First I tried the "smbclient" from the CLI: $ smbclient -L //msprint.ourorg.edu -U user23 timeout connecting to 192.168.44.3:445 timeout connecting to 192.168.44.3:139 Connection to msprint.ourorg.edu failed (Error NT_STATUS_ACCESS_DENIED) Method 2. I tried to use the GUI tool Smb4K. This shows me four other toplevel (I'm assuming they're domains?) groupings one of which is the one which our IT department supplied to me. Clicking them shows a bunch of other machines with (what I assume are NetBIOS names?) including my own. I see all sorts of other networked printers belonging to other departments but none within mine. Certainly not the PHYS-PRI one suggested to me by the IT folks. I realize that I'm probably using the wrong terminology for the windows network, but can anyone help me with this? What steps should I be taking in debugging this? Do I need to actually run my machine as a SAMBA server to authenticate to the printer or should I just be able to communicate using CUPS? It's a GUI to CUPS configuration http://cyberelk.net/tim/software/system-config-printer/

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  • Iterate over framesets with XPath expression in JavaScript?

    - by Derek Mahar
    Why does the following JavaScript, when run in Firefox 3.6.3, delete all FRAMESET elements in a document, but the similar script that instead uses an XPath expression to select the FRAMESET elements, does not? Is document.evaluate() simply unable to match FRAMESET elements? Is there an error in the XPath expression? Is there some other error? Select all FRAMESET elements using method document.getElementsByTagName() (succeeds): var framesets = document.getElementsByTagName('frameset'); for (var i = 0; i < framesets.length; i++) { framesets[i].parentNode.removeChild(framesets[i]); } Select all FRAMESET elements using an XPath expression (fails): var framesets = document.evaluate("//frameset", document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null); for (var i = 0; i < framesets.length; i++) { framesets[i].parentNode.removeChild(framesets[i]); }

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  • javascript regex: match altered version of first match with only one expression

    - by theseion
    Hi there I'm writing a brush for Alex Gorbatchev's Syntax Highlighter to get highlighting for Smalltalk code. Now, consider the following Smalltalk code: aCollection do: [ :each | each shout ] I want to find the block argument ":each" and then match "each" every time it occurrs afterwards (for simplicity, let's say every occurrence an not just inside the brackets). Note that the argument can have any name, e.g. ":myArg". My attempt to match ":each": \:([\d\w]+) This seems to work. The problem is for me to match the occurrences of "each". I thought something like this could work: \:([\d\w]+)|\1 but the right hand side of the alternation seems to be treated as an independent expression, so backreferencing doesn't work. So my question is: is it even possible to accomplish what I want in a single expression? Or would I have to use the backreference within a second expression (via another function call)? Cheers.

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  • regular expression with "|"

    - by WtFudgE
    I need to be able to check for a pattern with | in them. For example an expression like d*|*t should return true for a string like "dtest|test". I'm no regular expression hero so I just tried a couple of things, like: Regex Pattern = new Regex("s*\|*d"); //unable to build because of single backslash Regex Pattern = new Regex("s*|*d"); //argument exception error Regex Pattern = new Regex(@"s*\|*d"); //returns true when I use "dtest" as input, so incorrect Regex Pattern = new Regex(@"s*|*d"); //argument exception error Regex Pattern = new Regex("s*\\|*d"); //returns true when I use "dtest" as input, so incorrect Regex Pattern = new Regex("s*" + "\\|" + "*d"); //returns true when I use "dtest" as input, so incorrect Regex Pattern = new Regex(@"s*\\|*d"); //argument exception error I'm a bit out of options, what should I then use? I mean this is a pretty basic regular expression I know, but I'm not getting it for some reason.

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