I am trying to get started with HTK, I grabbed a copy, compiled it, grabbed the book, and all went more or less fine, little troubles here and there but nothing serious.
Now after reading the book and googling quite a while, I do not see any documentation for the essential part for me: HTKLib. Everything is described into the smallest detail for all HTK tool programs (scriptable command line interface tools) but I cannot find a single example or tutorial how to actually call the lib.
Could anyone point me into a direction?
The source code for the respective tools is included, but it would be rather cumbersome to have to extract the information for a reputable library by reading the source code... I would have expected a little more documentation , but maybe I simply overlooked it?
Any help is deeply appreciated,
Tom
edit:
I was trying to use HTK for computer vision purposes, not for NLP, and for that I required that I could link against it, and call it from within my code. Thanks for your replies.
Maybe ATK is more suitable for you. Here is the explantation from the ATK site:
"ATK is an API designed to facilitate building experimental applications for HTK. It consists of a C++ layer sitting on top of the standard HTK libraries."
In addition Microsoft Research has another research tool here for training acoustic models. This includes a set visual project for HTKlib and a set of C++ HTK wrappers, but it may only include a subset of the HTK functionality and has licence restrictions.
I have not used it but use I the language modeling toolkit. I think the main intention is to use the command line tools provided. I imagine they are very flexible tools that will enable you to build and test models. Why do you want to use the code?
Also what are you trying to do?
I have a bat script which calls out to an exe and starts this off - I dont know what language it is written in (Probably C++)
I want to find a profiler that allows me to run a command a few times and gathers IO/CPU and other stats
It needs to be open source where possible
Any suggestions
You may try Performance Analysis of Logs (PAL) - http://pal.codeplex.com
It has predefined templates for major system metrics (see System Overview template).
It may automatically create quite impressive report including graphs and brief explanations on detected 'hotspots'.
I have used Glowcode (www.glowcode.com) in the past. It's not open source, but quite easy to use, can profile an executable, and is available on an evaluation basis as well.
I recall it was quite cheap as well.
For Windows, XPERF is your friend, and is a free download.
Check out the Windows Performace Analysis Tools site for more information on this and other tools.
Have fun!
I am looking for a spell checker for c++ source code. Unfortunately all I can find is Visual Studio specific. I would like something which works on Linux.
Edit:
Ultimately I want to automate it in some way. I am not very proficient in spell checking, but what I am thinking of is a not-interactive console tool which prints error messages, or something like that.
Personally I use vim, but not everyone on the project does of course.
Currently we are using svn so it is possible to integrate it into the pre-commit-hook maybe?
Don't you guys do something similar?
Eclipse (Java based so will do mac, linux etc.) has spellcheckers built in. With the CDT plugin you can edit and build C++ code.
Vim also supports spell checking.
See the other question for more.
Emacs too has spell checking, flyspell-prog-mode, is the one I use, it is a (very!) personal preference which one works best for you.
The automating the spell check idea is a much trickier one. The best you can hope for is one that will tell you if there are spelling errors. That's trickier than it sounds, especially with code comments which may have all sorts of valid abbreviations which are not real words.
Having a company policy that whatever people have their EDITOR environment variable set to has a spell check enabled, should cut down on the spelling errors in commit messages, for example.
I found something!
svn co svn://anonsvn.kde.org/home/kde/trunk/quality/krazy2 krazy2
this is part of the quality management of KDE.
Besides a multitude of checks (KDE-specific, qt-specific, cpp-specific, ...) there is automated spell checking.
hope this helps
Which editors do you use? Many of them have spell checking abilities. E.g., gedit just needs to have the spellcheck plugin enabled.
You can check out some alpha code I just whipped up for a similar purpose: pyspellcode. It's Zlib licensed and uses clang and hunspell.
No idea how pyspellcode compares to what KDE does/provides but am happy to receive comparisons and will prioritize its development more if there's interest it.
At just over 200 lines, I'm guessing pyspellcode is at least lighter weight than KDE's solution though KDE's solution I imagine is way more tested.
I have decided that I really need to get some flowcharts for reverse engineering some code I have inherited. I do not have the Team edition of VS so I cannot use Team's built-in capabilities with Visio. So I thought I would parse the .ncb (Parser Information) files and make charts with dot (from graphviz.org). How hard could that be? But I cannot find any documentation for the innards of that file.
I really don't want to use a commercial application to do the flowcharts. And the free addins I've seen all assume that I am using C# or VB. However, I am using C and C++.
I did try the Microsoft "Visual Studio Learning Pack" which has the "Visual Programming Flow Chart" tool. But it doesn't appear to work with C++. So close!
So, does anybody have pointers to the file format or other suggestions (keep it polite!)?
I don't think you have much chance to be able to parse the NCB files. They are in a proprietary binary format that changes and is likely to change between every single version of visual studio. From what I read somewhere, it's possible that in VS2010 the NCB is going to be discarded and the intellisense information is going to be kept in normal database using SQL Server Express.
Another option you might consider is using some other tool that analyzes your code and builds diagrams and UML charts. Doxygen does this to some extent and there is a plethora of commercial tools that do as well. I have some personal experience with Rational Rose (which might be defunct by now..) and a tool called Together. This list might be of some help
For a structural analysis in the sense of "who calls what", "who inherits/overloads where" and "who reads/writes globals" I once used DeHydra (a mozilla project) for analysis and yed (www.yworks.com) for graph display. Both are free.
Dehydra runs under linux and requires your code to pass gcc compilation. This is not a too serious obstacle, as VC can generate makefiles, which can be hand-modified for gnu make.
In my case, some patching of include files was required, but i could finally get the desired information out.
It took me 3 days to get DeHydra working, another 2 days to tweak makefile and includes and
3 more days to adapt javascript code, which inside DeHydra extracts the required information.
DeHydra + Javascript now delivers in one compiler run a graphml file containing the code structure, which can directly displayed and interactively manipulated in yed.
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Briefly: Does anyone know of a GUI for gdb that brings it on par or close to the feature set you get in the more recent version of Visual C++?
In detail: As someone who has spent a lot of time programming in Windows, one of the larger stumbling blocks I've found whenever I have to code C++ in Linux is that debugging anything using commandline gdb takes me several times longer than it does in Visual Studio, and it does not seem to be getting better with practice. Some things are just easier or faster to express graphically.
Specifically, I'm looking for a GUI that:
Handles all the basics like stepping over & into code, watch variables and breakpoints
Understands and can display the contents of complex & nested C++ data types
Doesn't get confused by and preferably can intelligently step through templated code and data structures while displaying relevant information such as the parameter types
Can handle threaded applications and switch between different threads to step through or view the state of
Can handle attaching to an already-started process or reading a core dump, in addition to starting the program up in gdb
If such a program does not exist, then I'd like to hear about experiences people have had with programs that meet at least some of the bullet points.
Does anyone have any recommendations?
Edit:
Listing out the possibilities is great, and I'll take what I can get, but it would be even more helpful if you could include in your responses:
(a) Whether or not you've actually used this GUI and if so, what positive/negative feedback you have about it.
(b) If you know, which of the above-mentioned features are/aren't supported
Lists are easy to come by, sites like this are great because you can get an idea of people's personal experiences with applications.
Eclipse CDT will provide an experience comparable to using Visual Studio. I use Eclipse CDT on a daily basis for writing code and debugging local and remote processes.
If you're not familiar with using an Eclipse based IDE, the GUI will take a little getting used to. However, once you get to understand the GUI ideas that are unique to Eclipse (e.g. a perspective), using the tool becomes a nice experience.
The CDT tooling provides a decent C/C++ indexer that allows you to quickly find references to methods in your code base. It also provides a nice macro expansion tool and limited refactoring support.
With regards to support for debugging, CDT is able to do everything in your list with the exception of reading a core dump (it may support this, but I have never tried to use this feature). Also, my experience with debugging code using templates is limited, so I'm not sure what kind of experience CDT will provide in this regard.
For more information about debugging using Eclipse CDT, you may want to check out these guides:
Interfacing with the CDT debugger, Part 2: Accessing gdb with the Eclipse CDT and MI
CDT Debug Tutorial
gdb -tui works okay if you want something GUI-ish, but still character based.
You won't find anything overlaying GDB which can compete with the raw power of the Visual Studio debugger. It's just too powerful, and it's just too well integrated inside the IDE.
For a Linux alternative, try DDD if free software is your thing.
Check out Nemiver C/C++ Debugger. It is easy to install in Ubuntu (Developer Tools/Debugging).
Update: New link.
Qt Creator seems like good stuff. A colleague showed me one way set it up for debugging:
Create a new project, "Import of Makefile-based Project".
Point it to your root project folder (it will index sources under it, and it is impressively fast).
Go to project settings and add a run configuration, then specify the executable you want to debug, and its arguments.
Qt Creator seems to insist on building your project before debugging it. If you don't want that, or don't use make, just go to projects -> build (Left panel), then, on the right panel in "Build Steps", remove all the steps, including the step by default when you created the project.
That may seem like a bit much work for debugging an app I had already compiled, but it is worth it. The debugger shows threads, stacks and local variables in a similar way to Visual Studio and even uses many of the same keyboard shortcuts. It seems to handle templates well, at least std::string and std::map. Attaching to existing processes and core dumps seems to be supported, though I haven't tested it yet.
Keep in mind that I used it for less than and hour now, but I'm impressed so far.
I loathe the idea of Windows development, but the VC++ debugger is among the best I've seen. I haven't found a GUI front end that comes close to the VC one.
GDB is awesome once you really get used to it. Use it in anger enough and you'll become very proficient. I can whiz around a program doing all the things you listed without much effort anymore. It did take a month or so of suffering over a SSH link to a remote server before I was proficient. I'd never go back though.
DDD is really powerful but it was quite buggy. I found it froze up quite often when it got messages from GDB that it didn't grok. It's good because it has a gdb interface window so you can see what's going on and also interact with gdb directly. DDD can't be used on a remote X session in my environment (a real problem, since I'm sitting at a thin client when I do Unix dev) for some reason so it's out for me.
KDevelop followed typical KDE style and exposed EVERYTHING to the user. I also never had any luck debugging non KDevelop programs in KDevelop.
The Gnat Programming Studio (GPS) is actually quite a good front-end to GDB. It doesn't just manage Ada projects, so it's worth trying out if you are in need of a debugger.
You could use Eclipse, but it's pretty heavy weight and a lot of seasoned Unix people I've worked with (me included) don't care much for its interface, which won't just STFU and get out of your way. Eclipse also seems to take up a lot of space and run like a dog.
I use cgdb, simple and usefull
I use DDD a lot, and it's pretty powerful once you learn to use it. One thing I would say is don't use it over X over the WAN because it seems to do a lot of unnecessary screen updates.
Also, if you're not mated to GDB and don't mind ponying up a little cash, then I would try TotalView. It has a bit of a steep learning curve (it could definitely be more intuitive), but it's the best C++ debugger I've ever used on any platform and can be extended to introspect your objects in custom ways (thus allowing you to view an STL list as an actual list of objects, and not a bunch of confusing internal data members, etc.)
I used KDbg (only works under KDE).
Check out the Eclipse CDT project. It is a plugin for Eclipse geared towards C/C++ development and includes a fairly feature rich debugging perspective (that behind the scenes uses GDB). It is available on a wide variety of platforms.
DDD is the GNU frontend for gdb: http://www.gnu.org/software/ddd/
Similar comfortable to the eclipse gdb frontend is the emacs frontend, tightly tied to the emacs IDE. If you already work with emacs, you will like it:
GDB Emacs Frontend
Qt Creator-on-Linux is certainly on par with Visual Studio-on-Windows for C++ nowadays. I'd even say better on the debugger side.
I've tried a couple of different guis for gdb and have found DDD to be the better of them.
And while I can't comment on other, non-gdb offerings for linux I've used a number of other debuggers on other platforms.
gdb does the majority of the things that you have in your wish list. DDD puts a nicer front on them. For example thread switching is made simpler. Setting breakpoints is as simple as you would expect.
You also get a cli window in case there is something obscure that you want to do.
The one feature of DDD that stands out above any other debugger that I've used is the data "graphing". This allows you to display and arrange structures, objects and memory as draggable boxes. Double clicking a pointer will open up the dereferenced data with visual links back to the parent.
There's one IDE that is missing in this list and which is very efficient (I've used it in many C/C++ projects without any issues): Netbeans.
What can be stepped through is going to be limited by the debugging information that g++ produces, to a large extent. Emacs provides an interface to gdb that lets you control it via the toolbars/menus and display data in separate windows, as well as type gdb commands directly. Eclipse's CDT provides similar tools. I've heard of Anjuta and Code::Blocks but never used them.
As someone familiar with Visual Studio, I've looked at several open source IDE's to replace it, and KDevelop comes the closest IMO to being something that a Visual C++ person can just sit down and start using. When you run the project in debugging mode, it uses gdb but kdevelop pretty much handles the whole thing so that you don't have to know it's gdb; you're just single stepping or assigning watches to variables.
It still isn't as good as the Visual Studio Debugger, unfortunately.
Have you ever taken a look at DS-5 debugger?
There is a paid version which includes a lot of helpful features, but you can also use Community Edition for free (which is also quite useful especially for embedded systems).
I have a positive experience with this tool when debugging Android applications on real device using eclipse.
You don't mention whether you are using Windows or UNIX.
On UNIX systems, KDevelop is good but I use KDbg because it is easy to use and will also work with apps not developed in KDevelop.
Eclipse is good on both platforms.
On Windows, there is a great package called Wascana Desktop Developer which is Eclipse CDT and MinGW all packaged up and preconfigured nicely for the minimum of pain. Its the best thing I've found for developing GNU code on Windows.
I have used all these debuggers and none of them are as good as MS Dev Studio. Eclipse/Wascana is probably the closest but it does have limitations like you cannot step into DLLs and it doesn't do as good a job at examining variables.
The Code:Blocks C++ IDE has a graphical wrapper, with a few of the features you want, but nothing like the power of VS.
VisualGDB is another Visual Studio plugin to develop and debug applications on linux and embedded platforms.
KDevelop works pretty well.
Have you tried gdb -w with cygwin gdb.
It is supossed to have a windows interface which works fairly well.
The only problem I found is that on my present machine it didn't run that way until after I installed ddd. I suspect that it requires tcltk which was installed when I installed ddd.
Latest version of Geany supports it (only on Linux, though)
If you are looking for gdb under Visual Studio, then check WinGDB.
In the last 15 months I use insight (came with FC6). It is not great, it is written in Tcl/Tk, but it is simple and useful. DDD is of similar quality / utility, but somewhat harder to use (various GUI gotchas and omissions). I also tried to integrate gdb with my IDE, SlickEdit. It worked OK (I played some 4 hours with it), but I did not like the GUI context switches. I like my IDE to remain unchanged while I am debugging; on Windows I use SlickEdit for IDE and Visual Studio Debugger for debugging. So from the 3: Insight, DDD and SlickEdit, Insight is my 1st choice, I use it >95% of the time, command-line gdb and DDD make up the other 5%. If I get the chance, I will eval Eclipse at some point, my work PC does not seem to have enough RAM (1GB only) to run Eclipse reasonably well.
I have also heard a lot of praise for TotalView, including 1st hand during a job interview. I obtained an eval for our company in late 2008, but in the end we did not proceed as gdb was good enough for our needs; and it is free and ubiquitous.
Use www.zero-bugs.com/
Zero debugger, it requires C++0x support from gcc
I was searching for a debugger to step through a running programm. Say: Attach. The programm was build with eclipse, but because of maybe some multithreadding obstrucles, no sourcefiles where fond. What ever.
I got very compfortable with NetBeans.
[debug] from menu -> Attach Deugger...
as process chose the one to debug
as project [new project]
Now the window disappars and you see nothing. detach from the process. The Read Square "Stop" helps.
import source from the project as e.g. folder. ".../MyProject/src
Now it appears in your project, and you can set breakpoints.
again ttach debugger
chose the process to debug.
debugger should stop if programm reaches next breakpoint.
Going to [window] -> [Debugging] -> Will your window make compfortable.