Add mechanisms to reformant and check code style (#128)

Use an internal version of astyle (astyle 3.0). Scripts taken from QGIS.
astyle.options from https://github.com/uclouvain/openjpeg/issues/128

scripts/prepare-commit.sh can be used locally to automatically reformat
edited files.

Travis-CI will run scripts/verify-indentation.sh to verify committed files.

1 files changed, 112 insertions, 0 deletions

diff --git a/scripts/prepare-commit.sh b/scripts/prepare-commit.sh
new file mode 100755
index 00000000..63dac65c
--- /dev/null
+++ b/scripts/prepare-commit.sh
@@ -0,0 +1,112 @@
+#!/usr/bin/env bash
+###########################################################################
+#    prepare-commit.sh
+#    ---------------------
+#    Date                 : August 2008
+#    Copyright            : (C) 2008 by Juergen E. Fischer
+#    Email                : jef at norbit dot de
+###########################################################################
+#                                                                         #
+#   This program is free software; you can redistribute it and/or modify  #
+#   it under the terms of the GNU General Public License as published by  #
+#   the Free Software Foundation; either version 2 of the License, or     #
+#   (at your option) any later version.                                   #
+#                                                                         #
+###########################################################################
+
+TOPLEVEL=$(git rev-parse --show-toplevel)
+
+PATH=$TOPLEVEL/scripts:$PATH
+
+cd $TOPLEVEL
+
+# GNU prefix command for mac os support (gsed, gsplit)
+GP=
+if [[ "$OSTYPE" =~ darwin* ]]; then
+  GP=g
+fi
+
+if ! type -p astyle.sh >/dev/null; then
+  echo astyle.sh not found
+  exit 1
+fi
+
+if ! type -p colordiff >/dev/null; then
+  colordiff()
+  {
+    cat "$@"
+  }
+fi
+
+if [ "$1" = "-c" ]; then
+  echo "Cleaning..."
+  remove_temporary_files.sh
+fi
+
+set -e
+
+# determine changed files
+MODIFIED=$(git status --porcelain| ${GP}sed -ne "s/^ *[MA]  *//p" | sort -u)
+#MODIFIED=$(find src -name "*.c")
+
+if [ -z "$MODIFIED" ]; then
+  echo nothing was modified
+  exit 0
+fi
+
+# save original changes
+REV=$(git log -n1 --pretty=%H)
+git diff >sha-$REV.diff
+
+ASTYLEDIFF=astyle.$REV.diff
+>$ASTYLEDIFF
+
+# reformat
+i=0
+N=$(echo $MODIFIED | wc -w)
+for f in $MODIFIED; do
+  (( i++ )) || true
+
+  case "$f" in
+  thirdparty/*)
+    echo $f skipped
+    continue
+    ;;
+
+  *.cpp|*.c|*.h|*.cxx|*.hxx|*.c++|*.h++|*.cc|*.hh|*.C|*.H|*.sip|*.py)
+    ;;
+
+  *)
+    continue
+    ;;
+  esac
+
+  m=$f.$REV.prepare
+
+  cp $f $m
+  ASTYLEPROGRESS=" [$i/$N]" astyle.sh $f
+  if diff -u $m $f >>$ASTYLEDIFF; then
+    # no difference found
+    rm $m
+  fi
+done
+
+if [ -s "$ASTYLEDIFF" ]; then
+  if tty -s; then
+    # review astyle changes
+    colordiff <$ASTYLEDIFF | less -r
+  else
+    echo "Files changed (see $ASTYLEDIFF)"
+  fi
+  exit 1
+else
+  rm $ASTYLEDIFF
+fi
+
+
+# If there are whitespace errors, print the offending file names and fail.
+exec git diff-index --check --cached HEAD --
+
+exit 0
+
+# vim: set ts=8 noexpandtab :