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← Revision 18 as of 2023-07-19 09:23:58 ⇥
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| == Mercurial "uncrustify" extension == | == Installing uncrustify == |
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| The repository contains a Mercurial extension (in file {{{misc/uncrustify.py}}}) that provides the new command | Please note that we require a specific uncrustify version. On Ubuntu 22.04, 22.10 and 23.04, you get this uncrustify version by calling {{{sudo apt install uncrustify}}}, so on these Ubuntu versions you don't need the steps below. |
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| hg uncrustify }}} to automatically run {{{uncrustify}}} with the correct settings on your working directory. === Using the extension === Examples: {{{ hg uncrustify hg uncrustify . hg uncrustify --diff bar/baz.cc foo hg uncrustify --modify foo hg uncrustify --modify --no-backup foo |
wget https://github.com/uncrustify/uncrustify/archive/uncrustify-0.72.0.tar.gz tar -xzvf uncrustify-0.72.0.tar.gz cd uncrustify-uncrustify-0.72.0 mkdir build cd build cmake ../ make -j4 sudo cp uncrustify /usr/local/bin # Add binary to a directory on PATH. |
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| In order, these do the following: * List all files in the repository that need to be uncrustified (i.e. which violate the formatting conventions). * List all files in the repository below the current working directory that need to be uncrustified. * Show the diff that would need to be applied to uncrustify source file {{{bar/baz.cc}}} as well as all source files below directory {{{foo}}}. * Uncrustify all source files below directory {{{foo}}}. Backup files with extension {{{.crusty}}} are generated for all modified files, containing the original (not yet uncrustified) source. * Like the previous command, but without creating backups. |
== Running uncrustify == |
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| For more details, run | To check the formatting of all C++ files, use `./misc/style/run-uncrustify.py`. To actually edit the files that need to be uncrustified, use `./misc/style/run-uncrustify.py --modify`. This script is also part of our tox tests: |
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| hg help uncrustify | sudo apt install tox cd misc/ tox -e fix-style |
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| === Setting up the extension === /!\ Warning: Mercurial extensions can execute arbitrary code on your machine. If you don't trust everyone with write access to whatever repository you grabbed {{{uncrustify.py}}} from, don't use it. /!\ The extension may not be compatible with older versions of Mercurial and/or {{{uncrustify}}}, e.g. the versions currently in the Ubuntu 10.04 repository. Instructions for easily installing a more recent version of Mercurial on Ubuntu can be found [[http://icephoenix.us/linuxunix/installing-mercurial-1-5-or-1-6-on-ubuntu-lucid-lynx-10-04/|here]]. {{{uncrustify}}} is easy to compile and install from source. First of all, you will need {{{uncrustify}}} itself. On Ubuntu, install it with {{{ sudo apt-get install uncrustify }}} To set up the actual extension, add the following lines to your {{{hgrc}}}: {{{ [extensions] uncrustify = FULL_PATH_TO/uncrustify.py [alias] uncrustify = uncrustify -X re:^src/VAL }}} where {{{FULL_PATH_TO/uncrustify.py}}} is the full path to the {{{uncrustify.py}}} file (absolute, but may use {{{~}}} expansion). Alternatively, install {{{uncrustify.py}}} in some directory on your {{{PYTHONPATH}}} and write {{{ [extensions] uncrustify = }}} in your {{{hgrc}}} instead of providing the full path to the source file. The {{{alias}}} section above is optional. It makes {{{hg uncrustify}}} ignore the {{{src/VAL}}} directory, which does not need to be uncrustified. |
To check the style of Python and C++ files, you can use `tox -e style`. |
Back to developer page.
Using uncrustify to fix code layout
We use uncrustify with a Fast Downward configuration file (.uncrustify.cfg in the repository root) to enforce some of our formatting conventions. If a source file is properly formatted, applying uncrustify should be an idempotent operation (i.e., result in an identical file). This is important so that we can verify our style rules automatically, at least for those rules which uncrustify can handle.
Not all aspects of source layout are handled by uncrustify, so please still pay attention to our ../Whitespace rules and other ../CodingConventions.
Installing uncrustify
Please note that we require a specific uncrustify version. On Ubuntu 22.04, 22.10 and 23.04, you get this uncrustify version by calling sudo apt install uncrustify, so on these Ubuntu versions you don't need the steps below.
wget https://github.com/uncrustify/uncrustify/archive/uncrustify-0.72.0.tar.gz tar -xzvf uncrustify-0.72.0.tar.gz cd uncrustify-uncrustify-0.72.0 mkdir build cd build cmake ../ make -j4 sudo cp uncrustify /usr/local/bin # Add binary to a directory on PATH.
Running uncrustify
To check the formatting of all C++ files, use ./misc/style/run-uncrustify.py. To actually edit the files that need to be uncrustified, use ./misc/style/run-uncrustify.py --modify. This script is also part of our tox tests:
sudo apt install tox cd misc/ tox -e fix-style
To check the style of Python and C++ files, you can use tox -e style.