I went through samples and other questions, people are mostly using Workspaces. All I have is a single file and no workspace, how can I format it using Formatter static methods ?
You can either create a Solution and add the file to a project in that Solution (using Solution.Create(), or else use the basic formatting provided by NormalizeWhitespace().
Related
Hi have a c++ program that generates a CSV file, all works fine but when I open the CSV file it looks rather messy and I have to manually expand columns to read all the text.
My question is, is there a way in Qt to do ay kind of formatting when generating CSV file e.g. make columns a certain width?
The QString class has several methods that you can use to format the fields of a CSV file.
As an example consider the QString::leftJustified method (link to Qt docs here). Also, you may want to check the right equivalent.
The main advantage of using Qt APIs, in this case, is that you do not have to split formatting and arguments as with standard C++ APIs based on streams.
Anyhow the best API, among those of the QString class, depends on your specs. Check the Qt docs to learn more.
I've been given a project in which I need to import data from CSV, XLS and XLSX files, do some processing, then write the results to a database.
I'm working on a project that's been going on for a while and there are several import functions already that use a very nice object to handle opening files with all sorts of separators and such. And this object is key to the processing that I need to perform.
Since a CSV is basically a textfile with a different extension this object opens it perfectly and I've managed to complete most of the processing and testing with the object and values stored within.
But now I need to add the XLS and XLSX support. And since this object is now pretty much central to the processing I figured the easiest way to fit XLS and XLSX files in would be to convert them to CSV, then import that.
Any help would be appreciated and I'll try answer questions if it's necessary, but since the request is just for some way to convert from one file type to another and nothing more insightful I don't think it's really necessary to add any snippets just yet.
Your options in terms of C++ libraries:
OpenXLSX - https://github.com/troldal/OpenXLSX
XLNT - https://github.com/tfussell/xlnt
Or you could give "XLSX I/O" a try. It's a small C library.
"XLSX I/O" - https://github.com/brechtsanders/xlsxio
Don't forget to add the usual extern "C", when calling C functions from C++.
The repo contains basic xlsx-to-csv (and csv-to-xlsx) examples, which should get you started: https://github.com/brechtsanders/xlsxio/blob/master/src/xlsxio_xlsx2csv.c
Maybe this will help:
http://www.codeproject.com/Articles/42504/ExcelFormat-Library
Also you can use libraries from Open/Libre Office project.
Currently, i am working on a project using WEKA. Being naive and newbie in it, there are many things which i am not familair with. In my last project I used text files as a classification using WEKA. I applied the TextDirectoryLoader convertor to convert a directory containing text files as mentioned on this URL Text categorization with WEKA. Now I want to use the same stretagy for converting a directory containing source code (instead of text). For example, I have a Jedit source file containing Java source code. I am trying to convert it to ARFF file so that i can apply classifiers or other functions present in WEKA on that ARFF file for data mining purposes. I have also tried a test file given on following URL ARFF files from Text Collections. I believe i can use the same file as an example to convert source code files. However, I do not know what attributes should I define in a FastVector? and What format should the data be in (String or numeric). And what other sections should an ARFF file may have?
As in the example the authors have defined following attributes
FastVector atts = new FastVector(2);
atts.addElement(new Attribute("filename", (FastVector) null));
atts.addElement(new Attribute("contents", (FastVector) null));
I have tried to find some examples on Google but no success.
Could anyone here suggests me any solution or alternate to solve the above said problem? (Example code will be highly appreciated).
Or atleast could give me a short example which convertes a source code directory into an ARFF file. (If it is possible).
If not possible what could be the possible reason
Any alternate solution (except WEKA) where I can use the same set of functions on a source code.
It is not clear, what is your goal? Do you want to classify the source code files, or find the files which are contains any bug, or what?
As I imagine, you want to extract features from each source file, and represent it with an instance. Then you can apply any machine learning based algorithm.
Here, you can find a java example, how can you construct an arff file from java:
https://weka.wikispaces.com/Creating+an+ARFF+file
But, you have to define your task specific features and extract it from each source code files.
I was looking for a Qt implementation (since Qt already support export of rich text to odt) but found none of them.
Then I was astonished that I can't find any C++ class to read/write ods files.
I need to import/export tables with basic formating and was thinking that using a open source format would be a good idea. But it looks like it is mission impossible in C++
I wrote a Qt5 library for working with .ods, check it out:
https://github.com/f35f22fan/QOds
The Calligra framework will let you do this just fine, and since you're looking for a Qt based thing, then that would probably be your best option :) Further information on using Calligra for development can be found here: http://community.kde.org/Calligra
Not exactily what you wanted but check this out:
OpenOffice API
I'm using wxWidgets to write cross-plafrom applications. In one of applications I need to be able to load data from Microsoft Excel (.xls) files, but I need this to work on Linux as well, so I assume I cannot use OLE or whatever technology is available on Windows.
I see that there are many open source programs that can read excel files (OpenOffice, KOffice, etc.), so I wonder if there is some library that I could use?
Excel files it needs to support are very simple, straight tabular data. I don't need to extract any formatting except column/row position and the data itself.
Suggestedd reference: What is a simple and reliable C library for working with Excel files?
I came across other libraries (chicago on sf.net, xlsLib) but they seem to be outdated.
jrh
I can say that I know of a wxWidgets application that reads Excel .xls and .xlsx files on any platform. For the .xlsx files we used an XML parser and zip stream reader and grab the data we need, pretty easy to get going. For the .xls files we used: ExcelFormat, which works well and we found the author to be very generous with his support.
Maybe just some encouragement to give it a go? It was a couple of days work to get working.
Maybe http://www.libxl.com/ can help ?
I think that it is not something easy to do. xls files are quite complex and it is a proprietary format.
Maybe this is a stupid idea but why don't you upload and access your doc with Google docs. There are some apis to access your doc.
2 potential problems:
- Your app needs internet access
- Currently there is no C++ api.
But there are api for several languages including python see http://code.google.com/intl/fr/apis/gdata/articles/python_client_lib.html