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.

3 files changed, 35 insertions, 0 deletions

diff --git a/tools/ctest_scripts/travis-ci.cmake b/tools/ctest_scripts/travis-ci.cmake
index f8c50e5b..f1e78952 100644
--- a/tools/ctest_scripts/travis-ci.cmake
+++ b/tools/ctest_scripts/travis-ci.cmake
@@ -91,6 +91,13 @@ else()
 	set(BUILD_TESTING "FALSE")
 endif(NOT "$ENV{OPJ_CI_SKIP_TESTS}" STREQUAL "1")
 
+
+if("$ENV{OPJ_CI_CHECK_STYLE}" STREQUAL "1")
+	set(BUILD_ASTYLE "TRUE")
+else()
+	set(BUILD_ASTYLE "FALSE")
+endif("$ENV{OPJ_CI_CHECK_STYLE}" STREQUAL "1")
+
 # Options
 set( CACHE_CONTENTS "
 
@@ -100,6 +107,9 @@ CMAKE_BUILD_TYPE:STRING=${CTEST_BUILD_CONFIGURATION}
 # Warning level
 CMAKE_C_FLAGS:STRING= ${CCFLAGS_ARCH} ${CCFLAGS_WARNING}
 
+# For astyle
+CMAKE_CXX_FLAGS:STRING= ${CCFLAGS_ARCH}
+
 # Use to activate the test suite
 BUILD_TESTING:BOOL=${BUILD_TESTING}
 
@@ -112,6 +122,8 @@ OPJ_DATA_ROOT:PATH=$ENV{PWD}/data
 # jpylyzer is available with on GitHub: https://github.com/openpreserve/jpylyzer
 JPYLYZER_EXECUTABLE=$ENV{PWD}/jpylyzer/jpylyzer.${JPYLYZER_EXT}
 
+# Enable astyle
+WITH_ASTYLE:BOOL=${BUILD_ASTYLE}
 " )
 
 #---------------------
diff --git a/tools/travis-ci/install.sh b/tools/travis-ci/install.sh
index b1921844..2664eb03 100755
--- a/tools/travis-ci/install.sh
+++ b/tools/travis-ci/install.sh
@@ -115,3 +115,7 @@ if [ "${OPJ_CI_SKIP_TESTS:-}" != "1" ]; then
 		fi
 	fi
 fi
+
+if [ "${OPJ_CI_CHECK_STYLE:-}" == "1" ]; then
+    pip install --user autopep8
+fi
diff --git a/tools/travis-ci/run.sh b/tools/travis-ci/run.sh
index 35d2473e..950a0ee9 100755
--- a/tools/travis-ci/run.sh
+++ b/tools/travis-ci/run.sh
@@ -30,6 +30,16 @@ if [ "${OPJ_CI_ABI_CHECK:-}" == "1" ]; then
 	exit 0
 fi
 
+if [ "${OPJ_CI_CC:-}" != "" ]; then
+    export CC=${OPJ_CI_CC}
+    echo "Using ${CC}"
+fi
+
+if [ "${OPJ_CI_CXX:-}" != "" ]; then
+    export CXX=${OPJ_CI_CXX}
+    echo "Using ${CXX}"
+fi
+
 # Set-up some variables
 if [ "${OPJ_CI_BUILD_CONFIGURATION:-}" == "" ]; then
 	export OPJ_CI_BUILD_CONFIGURATION=Release #default
@@ -191,6 +201,15 @@ fi
 # ignore ctest exit code & parse this ourselves
 set +x
 
+
+
+if [ "${OPJ_CI_CHECK_STYLE:-}" == "1" ]; then
+    export OPJSTYLE=${PWD}/scripts/opjstyle
+    export PATH=${HOME}/.local/bin:${PATH}
+    scripts/verify-indentation.sh
+fi
+
+
 # Deployment if needed
 #---------------------
 if [ "${TRAVIS_TAG:-}" != "" ]; then