Buildr: adding a path to the generated eclipse/idea files - eclipse

I have a legacy java project that we have been moving to buildr/artifactory from ant/jars in svn.
The primary code is in the default (src/main/java) folder, but we have a few external source paths, for various tests that we can't move into the default folder, but we want to have access with it.
Currently, when adding a new library/regenerating IDE fields, it does not pick up these source paths, and I can't find a succinct discussion in the buildr manual for how to actually add them, rather than re-adding everything manually in eclipse (which just gets wiped out on the next regen).
Any idea how to have multiple source paths get picked up explicitly by buildr so that the idea/eclipse targets generate properly?

There are two ways that I know will work with IDEA. The second one might also work with Eclipse, while the first is specific to the idea task.
The IDEA-specific solution:
define 'proj' do
# ...
iml.main_source_directories << _('src/other')
end
iml also has test_source_directories and excluded_directories arrays you can append to.
The possibly eclipse-compatible solution, with more background than you probably want:
The iml object gets its default values for the main and test source directory arrays from project.compile.sources and project.test.compile.sources (slight simplification; resources are considered also). Buildr defines these .sources project attributes from the layout, so instead of explicitly appending to the iml attributes, you could use a custom layout for your project that includes your special source paths. That might work with the eclipse task, but I haven't tried it.

Related

Referencing external files in Eclipse: virtually linked files vs build settings in Project Properties?

There is information on the web as well as here on the topic related to the using external file resources in CDT Eclipse: C/C++ and H files located somewhere else in the files system. All the described methods run along two methods:
creation within the project space the virtual linked files which point to
the locations of the actual files without copying them
adding the location of the external referenced resource in the
Project->Properties->C/C++ general->Paths and Symbols and related
Project->Properties-> C/C++ Build (link folders and includes)
I am not sure if the 1st method is always enough without adding the 2nd, but seems the 2nd builds well without the 1st.
My question is about a comparison of the two. Are those methods intended to be used similarly or each one is preferred in some cases?
Is each method self sufficient without applying the other?
This forum thread
https://www.eclipse.org/forums/index.php/t/1087314/ suggests that for the include files the 1st method might not even be sufficient as the Build Settings should still be updated (2nd method) to include the linked H files...then may be the 1st method is irrelevant?
You would typically use the first method if you want to edit the externally-located files as part of your work on the project, and the second method if they're just dependencies that you use without modifying.
On a technical level, the difference is that with the first method the files will be part of the project model, and so will e.g. show up as candidates in Open Resource, while with the second method they wouldn't. Another difference is that with the first method, the files are indexed independently, while with the second method the files are only indexed by virtue of being included by files in your project (so e.g. .cpp files in those directories typically wouldn't be indexed with the second method at all).
Update: answers to questions from the comment
Is the 1st method sufficient enough in all cases without updating Paths and Symbols Property ?
No, if there are header files located in the linked directory that are included by files in your project using include paths that are not relative to the current directory (so not just #include "foo.h" in the same directory, #include "../foo.h" in a child directory, etc., but #include <bar/foo.h> in some other directory), you still want to specify those include paths in Paths and Symbols.
CDT's indexer does have an "Allow heuristic resolution of includes" option (specified in Preferences -> C/C++ -> Indexer) that may allow you to avoid adding the paths to Paths and Symbols, but note that (1) this affects the indexer only, not the build (which may be fine if you're using your own makefiles for the build), and (2) as it's heuristic, it's not perfect, e.g. if you have headers with the same name in different directories it can get confused. For best accurracy, I recommend unchecking "Allow heuristic resolution of includes", and always specifying include paths explicitly.
Also can the 2nd method be sufficient in itself if referenced files to be used AS IS without modification?
I don't see why not.

Remove/Add References and Compile antique VB6 application using Powershell

I've been given the task of researching whether one can use Powershell to automate the managing of References in VB6 application and then compile it's projects afterwards.
There are 3 projects. I requirement is to remove a specific reference in each project. Then, compile projects from bottom up (server > client > interface) and add reference back in along the way. (remove references, compile server.dll >add client reference to server.dll, compile client.dll > add interface reference to client.dll, compile interface.exe)
I'm thinking no, but I was still given the task of finding out for sure. Of course, where does one go to find this out? Why here of course, StackOverflow.
References are stored in the project .VBP files which are just text files. A given reference takes up exactly one line of the file.
For example, here is a reference to DAO database components:
Reference=*\G{00025E01-0000-0000-C000-000000000046}#5.0#0#C:\WINDOWS\SysWow64\dao360.dll#Microsoft DAO 3.6 Object Library
The most important info is everything to the left of the path which contains the GUID (i.e., the unique identifier of the library, more or less). The filespec and description text are unimportant as VB6 will update that to whatever it finds in the registry for the referenced DLL.
An alternate form of reference is for GUI controls, such as:
Object={BDC217C8-ED16-11CD-956C-0000C04E4C0A}#1.1#0; tabctl32.ocx
which for whatever reason never seem to have a path anyway. Most likely you will not need to modify this type of reference, because it would almost certainly break forms in the project which rely on them.
So in your Powershell script, the key task would be to either add or remove the individual reference lines mentioned in the question. Unless you are using no form of binary compatibility, the GUID will remain stable. Therefore, you could essentially hardcode the strings you need to add/remove.
Aside from all that, its worth thinking through why you need to take this approach at all. Normally to build a VB6 solution it is totally unnecessary to add/remove references along the way. Also depending on your choice of deployment techniques, you are probably using either project or binary compatibility which tends to keep the references stable.
Lastly, I'll mention that there are existing tools such as Kinook's Visual Build Pro which already know how to build groups of VB6 projects and if using a 3rd party tool like that is an option, could save you a lot of work.

GWT: Get constants in server side

I'm trying to get the constants (ConstantsWithLookup) stored in the client side in my server side, but it can't figure out how to do it. I have my constants interface and my constants properties in the same folder.
I've tried tips of other similar threads with no success.
I tried Hermes, gwt-i18n-server, gwt-dmesg, GTWI18N, using a ResourceBundle, trying to get source file properties.
For the first two, it seems that the main reason is the outdated support for the newest GWT version. As for the ResourceBundle, it cannot find the properties file because at deployment, there isn't a properties file, just a Constants.class.
I'm trying to avoid changing my properties file to another location (like /WEB-INF/constants).
I'm using Hermes with GWT 2.5.0.rc1, and it works fine. Usage:
put hermes-1.2.0.jar into war/WEB-INF/lib
Then on the server side write something like
MyConstantsWithLookup my = Hermes.get(MyConstantsWithLookup.class, "de");
String string = my.getString(key);
A properties file MyConstantsWithLookup.properties must exist in the same package as MyConstantsWithLookup.java, even if that properties file is empty (which might be the case if you're using #DefaultStringValue etc.)
Also add MyConstantsWithLookup_de.properties etc.
Make sure, that these properties files are copied next to your classes when compiling. Javac doesn't do that, so it must be done in an additional build step (Eclipse usually does this automatically, but it won't happen by itself when you build e.g. with Ant)
Many build setups will skip the java and properties files from the "client" package when compiling the server side. In that case, put your constants files in the "shared" package (if you have one).

Using OpenWrap with Scope

I may not fully understand the wiki article on scoping, so forgive me if this sounds dumb.
Intro:
I have a solution (ABC.sln) with over 40 projects and am trying to implement OpenWrap for package management.
So I did the following in the solution's root folder:
o init-wrap -all
That worked fine: I now have a file called SLN.wrapdesc in the solution's root folder. All of the .csproj files in the subfolders contain the OpenWrap targets line.
I then proceded to add the different wraps to the solution with:
o add-wrap -Name xxx
Again, this worked fine: I have some wraps in the wraps folder, and the build doesn't break after removing the old references from the projects.
Problem:
All of the contents of the wraps are going to all of the projects, even for those that don't need it. I would like to be able to specify which wraps go where, eg AjaxControlToolkit only goes into web projects.
What I tried
First, I removed the AjaxControlToolkit from the wrapdesc:
o remove-wrap AjaxControlToolkit
This causes the build to break (as expected). Then I tried the following:
1. Try to add the wrap back with a scope:
o add-wrap -Name AjaxControlToolkit -scope webproject
This simply puts the wrap back in the wraps folder. I then added <OpenWrap-Scope>customscope</OpenWrap-Scope> to the project file, but the build still broke.
2. Try and manually add a file called ABC.webproject.wrapdesc to the root folder. This causes the following error when I try to open the solution:
The "exists" function only accepts a scalar value, but its argument "#(_WrapFile->'%(FullPath)')" evaluates to "D:\Projects\ABC.webproject.wrapdesc;D:\Projects\ABC.wrapdesc" which is not a scalar value.
I guess it doesn't like 2 wrapdesc files. That is strange because the wiki says "...you can add a second descriptor alongside your default descriptor..."
So now I'm stuck. Anyone have any ideas?
The per-msbuild file is really not a recommended approach to managing dependencies. Doing it per project is not quite the design philosophy behind OpenWrap, so the system is not quite optimized for those scenarios.
If you don't need something from those assemblies then the easiest way to solve it is to not use the references by not using any code from those packages. This solves the problem very easily as nothing will get loaded (or even need to be on disk) if no code has been added to it.
That said, add-wrap -scope newscope will create an additional .wrapdesc file that will add the new dependency to the new scope, by creating a myProject.newscope.wrapdesc file independently of the original myProject.wrapdesc.
If you do want to do this per-project, have you tried using the convention-based scoping? Something like:
directory-structure: src\*{scope: Web=WebProjects}*
Would take any project in a folder child of src containing Web in the name and assign those to the WebProjects scope.
I know that one has worked fine for my projects so far, although you do have to restart VS as it aggressively caches certain files and will not see the change.
Customizing the msbuild file itself is not fully tested (and the wiki entry was very much a design spec rather than final documentation, not all of it has been built that way) so it may or may not work. Happy to take a look if you can open a bug ticket on http://github.com/openrasta/openwrap/issues

Xcode - exclude files in a custom configuration - better way?

I'm trying to come up with a way to make it easy to switch out our "mock" data services and our live ones. Basically, we'll have live servers with real web services, but for whatever reason, a developer may want to load data from static files (file urls).
I figured I would solve this problem by creating categories that override the methods that fetch the data, thus leaving original code untouched (it has no concept of the "mock" data). I don't want to litter my code with #ifdef.
I can put an #ifdef at the very beginning of each file that has categories in it, and I can set a custom flag in the configuration settings, but I'd rather just have a way to include or exclude the files depending on the configuration. Is that possible? How do you solve this problem?
See http://lists.apple.com/archives/xcode-users/2009/Jun/msg00153.html
The trick is to define EXCLUDED_SOURCE_FILE_NAMES in the configuration you want to exclude the files from, and set the value of that custom build setting to a list of the file names (or a pattern that matches those, and only those, file names).
I would recommend creating two targets one of which has the mock categories included and another one which does not.
When you want to test, just build the target containing the mock categories. Everything else can remain identical.
If you would like to add a file but do not wont to compile it. Go to (for all your targets) project>build phases>compile source and take out the file that you do not want to compile.