adding .pre-commit-config.yaml to opm-grid

.pre-commit-config.yaml

@@ -0,0 +1,42 @@
+# Pre-commit configuration for OPM-grid
+# This configuration uses the pre-commit framework to automatically format source files
+# before commits, ensuring consistent code style across the project.
+#
+# Installation:
+# -------------
+# 1. Install pre-commit (choose one method):
+#    - Via pip: pip install pre-commit
+#    - Via conda: conda install -c conda-forge pre-commit
+#    - Via homebrew (macOS): brew install pre-commit
+#    - Via package manager (Ubuntu/Debian): apt install pre-commit
+#
+# 2. Install the hooks in your local repository:
+#    pre-commit install
+#
+# Usage:
+# ------
+# - Hooks run automatically on every commit
+# - To run manually on all files: pre-commit run --all-files
+# - To run on specific files: pre-commit run --files <file1> <file2>
+# - To skip hooks for a commit: git commit --no-verify
+# - To update hook versions: pre-commit autoupdate
+#
+# What these hooks do:
+# -------------------
+# - trailing-whitespace: Removes trailing whitespace from lines
+#   (preserves Markdown hard line breaks with --markdown-linebreak-ext=md)
+# - end-of-file-fixer: Ensures files end with exactly one newline
+#
+
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v6.0.0  # Latest release as of August 2025
+    hooks:
+      - id: trailing-whitespace
+        args: [--markdown-linebreak-ext=md]
+        types_or: [c, c++, python, shell, yaml, cmake, markdown, text]
+        exclude: '^(build/|\.git/)'
+
+      - id: end-of-file-fixer
+        types_or: [c, c++, python, shell, yaml, cmake, markdown, text]
+        exclude: '^(build/|\.git/)'

INSTALL

@@ -10,7 +10,7 @@ Getting started
 
 Suppose you have downloaded all DUNE modules of interest to your
 computer and extracted then in one common directory. See [1] for a
-list of available modules. 
+list of available modules.
 
 To compile the modules Dune has to check several components of
 your system and whether prerequisites within the modules are met. For
@@ -22,7 +22,7 @@ automake tools. Run
 to commence those tests and build all modules you have
 downloaded. Don't worry about messages telling you that libraries are
 missing: they are only needed for grid-self-checks we need for
-developing. 
+developing.
 
 You can customize the build to your specific needs by using an options file
 (see below)
@@ -74,7 +74,7 @@ dunecontrol --only=dune-common autogen --help
 (In the svn version this has to be calles after running autogen.)
 
 
-An example of an options file is 
+An example of an options file is
 
   # use a special compiler (g++ version 3.4) and install to a custom
   # directory, default is /usr/local/bin

doc/EquationNotes.tex

@@ -44,9 +44,9 @@ \subsection{The transport equation}
 \end{align*}
 Using equation \eqref{eq:GradPcap} we eliminate the phase pressures.
 \begin{align*}
- \Kb\nabla p_{cow} & = -\lambda_o^{-1}\vb_o + \rho_o\Kb\gb 
+ \Kb\nabla p_{cow} & = -\lambda_o^{-1}\vb_o + \rho_o\Kb\gb
   + \lambda_w^{-1}\vb_w - \rho_w\Kb\gb  \\
-  & = -\lambda_o^{-1}\vb_o 
+  & = -\lambda_o^{-1}\vb_o
   + \lambda_w^{-1}\vb_w + (\rho_o - \rho_w)\Kb\gb  \\
 \end{align*}
 Now we use equation~\eqref{eq:Vtot} to eliminate $\vb_o$:

doc/doxygen/bestpractice.wml

@@ -57,4 +57,4 @@ source files and by the include statements in these source files.</p>
 source files are parsed. Entering a <tt>@defgroup</tt> statement makes
 this module known to doxygen so that all modules mentioned in the
 <tt>modules</tt> file are listed first and in the order they are
-defined there.</p>
+defined there.</p>

doc/man1/mirror_grid.1

@@ -2,7 +2,7 @@
 .SH NAME
 mirror_grid \- Mirror the grid in one direction.
 .SH SYNOPSIS
-.B mirror_grid 
+.B mirror_grid
 \fI\,filename.grdecl\/\fR
 \fI\,direction\/\fR
 .SH DESCRIPTION

tests/CORNERPOINT_ACTNUM.DATA

@@ -1,4 +1,4 @@
-RUNSPEC 
+RUNSPEC
 
 DIMENS
   10  10  5 /
@@ -200,7 +200,7 @@ ZCORN
 /
 
 ACTNUM
-  200*0 100*1 200*0 /      
+  200*0 100*1 200*0 /
 
 PORO
    500*0.15 /