Source-highlight-qt:

Source-highlight-qt is a library for performing syntax highlighting in Qt documents by relying on GNU Source-Highlight library, http://www.gnu.org/software/src-highlite/.

Although the use of GNU Source-highlight library is pretty hidden by this library, so the programmer must not need the details of GNU Source-highlight library, yet, some general notions of GNU Source-highlight might be useful (especially how language definition files are defined, where the configuration files are stored, etc.).

This library provides an implementation of the qt abstract class QSyntaxHighlighter class, and it deals both with Qt3 and Qt4, although you will need to build a separate version of the library for the two different qt frameworks.
Please note, the Qt3 version has less features and it is there only for old qt applications; furthermore, QSyntaxHighlighter class in Qt3 has some design problems which make it quite inefficient to use. 

Author

Lorenzo Bettini, http://www.lorenzobettini.it

Download

You can download the sources and binaries (released under GPL), from the SourceForge site.

You can also get the source code via git (this way you will also access the latest version - probably the one in development stage, and not yet released):

git clone git://srchiliteqt.git.sourceforge.net/gitroot/srchiliteqt/srchiliteqt

and you can also browse the repository.

Remember that you need to install GNU Source-highlight first, and you need at least version 3.0 (i.e., the first version providing the library that source-highlight-qt will use). GNU Source-highlight relies on Boost regex library, and in particular its development files (thus, if you install boost from your Linux distribution, make sure to install also the development package).

See the installation section of the manual for further details.

Documentation

Here's the available documentation (the same files are also part of the library distribution):

• Programming manual
• API documentation

However, for standard usage, it's just a matter of executing this code (you can pass the language syntax, i.e., the source-highlight language definition file, to the init method):

QTextEdit *editor = new QTextEdit;
srchiliteqt::Qt4SyntaxHighlighter *highlighter =
 new srchiliteqt::Qt4SyntaxHighlighter(editor->document());
highlighter->init("java.lang");

We also suggest to take a look at the example program qeditexample, for some use cases of the library.

Support

You can refer to the corresponding sourceforge support page, or you can email me directly (please, find my email address at my home page).

Links

Here we list some software related to Source-highlight-qt library in the sense that it uses it as a backend (i.e., provides an interface to source-highlight) or it uses some of its features (e.g., definition files):

• QSource-Highlight is a Qt4 front-end for GNU Source-Highlight (it relies on the library Source-Highlight-Qt). You can highlight your code on the fly, and have the highlighted output in all the formats supported by source-highlight (e.g., HTML, LaTeX, Texinfo, etc.). You can then copy the formatted output and paste it (e.g., in your blog), or save it to a file. A preview of the highlighted output is available for some output formats (e.g., HTML, XHTML, etc.).

  http://qsrchilite.sourceforge.net.

• Roberto Alsina made a partial python binding using SIP so that you can use it in PyQt programs.

  http://marave.googlecode.com/svn/trunk/marave/highlight/