Introduce new shell syntax for ci-run.sh to improve Windows support (GH-4400)

Tools/ci-run.sh

@@ -3,9 +3,9 @@
 GCC_VERSION=${GCC_VERSION:=8}
 
 # Set up compilers
-if [ "$TEST_CODE_STYLE" == "1" ]; then
+if [[ $TEST_CODE_STYLE == "1" ]]; then
   echo "Skipping compiler setup"
-elif [ "${OSTYPE##linux-gnu*}" == "" ]; then
+elif [[ $OSTYPE == "linux-gnu"* ]]; then
   echo "Setting up linux compiler"
   echo "Installing requirements [apt]"
   sudo apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
@@ -13,7 +13,7 @@ elif [ "${OSTYPE##linux-gnu*}" == "" ]; then
   sudo apt install -y -q ccache gdb python-dbg python3-dbg gcc-$GCC_VERSION || exit 1
 
   ALTERNATIVE_ARGS=""
-  if [ -z "${BACKEND##*cpp*}" ]; then
+  if [[ $BACKEND == *"cpp"* ]]; then
     sudo apt install -y -q g++-$GCC_VERSION || exit 1
     ALTERNATIVE_ARGS="--slave /usr/bin/g++ g++ /usr/bin/g++-$GCC_VERSION"
   fi
@@ -23,11 +23,11 @@ elif [ "${OSTYPE##linux-gnu*}" == "" ]; then
   sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-$GCC_VERSION 60 $ALTERNATIVE_ARGS
 
   export CC="gcc"
-  if [ -z "${BACKEND##*cpp*}" ]; then
+  if [[ $BACKEND == *"cpp"* ]]; then
     sudo update-alternatives --set g++ /usr/bin/g++-$GCC_VERSION
     export CXX="g++"
   fi
-elif [ "${OSTYPE##darwin*}" == "" ]; then
+elif [[ $OSTYPE == "darwin"* ]]; then
   echo "Setting up macos compiler"
   export CC="clang -Wno-deprecated-declarations"
   export CXX="clang++ -stdlib=libc++ -Wno-deprecated-declarations"
@@ -36,7 +36,7 @@ else
 fi
 
 # Set up miniconda
-if [ "$STACKLESS" == "true" ]; then
+if [[ $STACKLESS == "true" ]]; then
   echo "Installing stackless python"
   #conda install --quiet --yes nomkl --file=test-requirements.txt --file=test-requirements-cpython.txt
   conda config --add channels stackless
@@ -50,11 +50,11 @@ echo "===================="
 echo "|VERSIONS INSTALLED|"
 echo "===================="
 echo "Python $PYTHON_SYS_VERSION"
-if [ "$CC" ]; then
+if [[ $CC ]]; then
   which ${CC%% *}
   ${CC%% *} --version
 fi
-if [ "$CXX" ]; then
+if [[ $CXX ]]; then
   which ${CXX%% *}
   ${CXX%% *} --version
 fi
@@ -62,39 +62,39 @@ echo "===================="
 
 # Install python requirements
 echo "Installing requirements [python]"
-if [ -z "${PYTHON_VERSION##2.7}" ]; then
+if [[ $PYTHON_VERSION == "2.7"* ]]; then
   pip install wheel || exit 1
   pip install -r test-requirements-27.txt || exit 1
-elif [ -z "${PYTHON_VERSION##3.[45]*}" ]; then
+elif [[ $PYTHON_VERSION == "3."[45]* ]]; then
   python -m pip install wheel || exit 1
   python -m pip install -r test-requirements-34.txt || exit 1
 else
   python -m pip install -U pip setuptools wheel || exit 1
 
-  if [ -n "${PYTHON_VERSION##*-dev}" -o "$COVERAGE" == "1" ]; then
+  if [[ $PYTHON_VERSION != *"-dev" || $COVERAGE == "1" ]]; then
     python -m pip install -r test-requirements.txt || exit 1
 
-    if [ "${PYTHON_VERSION##pypy*}" -a "${PYTHON_VERSION##3.[4789]*}" ]; then
+    if [[ $PYTHON_VERSION != "pypy"* && $PYTHON_VERSION != "3."[4789]* ]]; then
       python -m pip install -r test-requirements-cpython.txt || exit 1
     fi
   fi
 fi
 
-if [ "$TEST_CODE_STYLE" == "1" ]; then
-  STYLE_ARGS="--no-unit --no-doctest --no-file --no-pyregr --no-examples";
+if [[ $TEST_CODE_STYLE == "1" ]]; then
+  STYLE_ARGS="--no-unit --no-doctest --no-file --no-pyregr --no-examples"
   python -m pip install -r doc-requirements.txt || exit 1
 else
   STYLE_ARGS="--no-code-style"
 
   # Install more requirements
-  if [ -n "${PYTHON_VERSION##*-dev}" ]; then
-    if [ -z "${BACKEND##*cpp*}" ]; then
+  if [[ $PYTHON_VERSION != *"-dev" ]]; then
+    if [[ $BACKEND == *"cpp"* ]]; then
       echo "WARNING: Currently not installing pythran due to compatibility issues"
       # python -m pip install pythran==0.9.5 || exit 1
     fi
 
-    if [ "$BACKEND" != "cpp" -a -n "${PYTHON_VERSION##pypy*}" -a
-         -n "${PYTHON_VERSION##2*}" -a -n "${PYTHON_VERSION##3.4*}" ]; then
+    if [[ $BACKEND != "cpp" && $PYTHON_VERSION != "pypy"* &&
+          $PYTHON_VERSION != "2"* && $PYTHON_VERSION != "3.4"* ]]; then
       python -m pip install mypy || exit 1
     fi
   fi
@@ -110,7 +110,7 @@ export PATH="/usr/lib/ccache:$PATH"
 # This is true for the latest msvc, gcc and clang
 CFLAGS="-O0 -ggdb -Wall -Wextra"
 
-if [ "$NO_CYTHON_COMPILE" != "1" -a -n "${PYTHON_VERSION##pypy*}" ]; then
+if [[ $NO_CYTHON_COMPILE != "1" && $PYTHON_VERSION != "pypy"* ]]; then
 
   BUILD_CFLAGS="$CFLAGS -O2"
   if [[ $PYTHON_SYS_VERSION == "2"* ]]; then
@@ -118,10 +118,10 @@ if [ "$NO_CYTHON_COMPILE" != "1" -a -n "${PYTHON_VERSION##pypy*}" ]; then
   fi
 
   SETUP_ARGS=""
-  if [ "$COVERAGE" == "1" ]; then
+  if [[ $COVERAGE == "1" ]]; then
     SETUP_ARGS="$SETUP_ARGS --cython-coverage"
   fi
-  if [ "$CYTHON_COMPILE_ALL" == "1" ]; then
+  if [[ $CYTHON_COMPILE_ALL == "1" ]]; then
     SETUP_ARGS="$SETUP_ARGS --cython-compile-all"
   fi
   SETUP_ARGS="$SETUP_ARGS
@@ -130,15 +130,18 @@ if [ "$NO_CYTHON_COMPILE" != "1" -a -n "${PYTHON_VERSION##pypy*}" ]; then
   CFLAGS=$BUILD_CFLAGS \
     python setup.py build_ext -i $SETUP_ARGS || exit 1
 
-  if [ -z "$COVERAGE" -a -z "$STACKLESS" -a -n "${BACKEND//*cpp*}" -a
-       -z "$LIMITED_API" -a -z "$CYTHON_COMPILE_ALL" -a -z "$EXTRA_CFLAGS" ]; then
+  # COVERAGE can be either "" (empty or not set) or "1" (when we set it)
+  # STACKLESS can be either  "" (empty or not set) or "true" (when we set it)
+  # CYTHON_COMPILE_ALL can be either  "" (empty or not set) or "1" (when we set it)
+  if [[ $COVERAGE != "1" && $STACKLESS != "true" && $BACKEND != *"cpp"* &&
+        $CYTHON_COMPILE_ALL != "1" && $LIMITED_API == "" && $EXTRA_CFLAGS == "" ]]; then
     python setup.py bdist_wheel || exit 1
   fi
 fi
 
-if [ "$TEST_CODE_STYLE" == "1" ]; then
-    make -C docs html || exit 1
-elif [ -n "${PYTHON_VERSION##pypy*}" ]; then
+if [[ $TEST_CODE_STYLE == "1" ]]; then
+  make -C docs html || exit 1
+elif [[ $PYTHON_VERSION != "pypy"* ]]; then
   # Run the debugger tests in python-dbg if available
   # (but don't fail, because they currently do fail)
   PYTHON_DBG=$(python -c 'import sys; print("%d.%d" % sys.version_info[:2])')
@@ -150,10 +153,10 @@ elif [ -n "${PYTHON_VERSION##pypy*}" ]; then
 fi
 
 RUNTESTS_ARGS=""
-if [ "$COVERAGE" == "1" ]; then
+if [[ $COVERAGE == "1" ]]; then
   RUNTESTS_ARGS="$RUNTESTS_ARGS --coverage --coverage-html --cython-only"
 fi
-if [ -z "$TEST_CODE_STYLE" ]; then
+if [[ $TEST_CODE_STYLE != "1" ]]; then
   RUNTESTS_ARGS="$RUNTESTS_ARGS -j7"
 fi