Workflow improvements.

- Build and run tests in `install.sh`.

- Implement Python version detection on Mac OS X.

- Set up Travis CI.

.gitignore

@@ -1,9 +1,7 @@
 # Output directories
+bin/
 build/
 
-# Binaries
-*.bin
-
 # Vim
 *[._]s[a-w][a-z]
 

.travis.yml

@@ -0,0 +1,28 @@
+# Language must be "generic" to get minimal Trusty image.
+language: generic
+
+env:
+  - TEST_PY=py2
+  - TEST_PY=py3
+
+os:
+  - linux
+  - osx
+
+# Need Trusty for version of GCC that supports C++11.
+dist: trusty
+sudo: required
+addons:
+  apt:
+    packages:
+      - cmake
+      - libboost-dev
+      - libboost-program-options-dev
+      - python-dev
+      - python3-dev
+
+osx_image: xcode7
+
+install: ./.travis/install.sh
+
+script: ./.travis/script.sh

.travis/install.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+if [[ "${TRAVIS_OS_NAME}" == 'osx' ]]; then
+    brew update
+    # Skip updating Boost, since doing so takes a long time and we'd like to
+    # know about compatibility breakage anyway.
+    brew install cmake
+    case "${TEST_PY}" in
+        py2) brew outdated python || brew upgrade python;;
+        py3) brew install python3;;
+    esac
+fi

.travis/script.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+case "${TEST_PY}" in
+    py2) PY3=OFF ./install.sh;;
+    py3) PY3=ON ./install.sh;;
+    *) echo "Unknown TEST_PY: ${TEST_PY}"; false;;
+esac

CMakeLists.txt

@@ -52,14 +52,14 @@ else()
   set_target_properties(cpsm_py PROPERTIES PREFIX "")
 endif()
 install(TARGETS cpsm_py DESTINATION ${PROJECT_SOURCE_DIR}/autoload)
-install(TARGETS cpsm_py DESTINATION ${PROJECT_SOURCE_DIR}/test)
+install(TARGETS cpsm_py DESTINATION ${PROJECT_SOURCE_DIR}/bin)
 
-add_executable(cpsm_cli EXCLUDE_FROM_ALL src/cpsm_cli_main.cc)
+add_executable(cpsm_cli src/cpsm_cli_main.cc)
 target_link_libraries(cpsm_cli cpsm_core ${Boost_PROGRAM_OPTIONS_LIBRARIES})
-set_target_properties(cpsm_cli PROPERTIES PREFIX "" SUFFIX ".bin")
-install(TARGETS cpsm_cli DESTINATION ${PROJECT_SOURCE_DIR}/test OPTIONAL)
+install(TARGETS cpsm_cli DESTINATION ${PROJECT_SOURCE_DIR}/bin)
 
-add_executable(matcher_test EXCLUDE_FROM_ALL src/matcher_test.cc)
+enable_testing()
+
+add_executable(matcher_test src/matcher_test.cc)
 target_link_libraries(matcher_test cpsm_core)
-set_target_properties(matcher_test PROPERTIES PREFIX "" SUFFIX ".bin")
-install(TARGETS matcher_test DESTINATION ${PROJECT_SOURCE_DIR}/test OPTIONAL)
+add_test(matcher_test matcher_test)

install.sh

@@ -3,24 +3,48 @@
 set -o errexit
 set -o nounset
 set -o pipefail
-set +o histexpand
 
-if [ -z ${PY3+x} ]; then
-    # neovim's --version doesn't indicate the presence or absence of python3
-    # support.
-    have_py3=$(script -q --return -c "vim -S <(echo -e \"redir! > /dev/stderr\\necho has('python3')\\nqa!\") 2>&3" /dev/null 3>&1 >/dev/null)
-    if [ "$have_py3" -eq "1" ]; then
+function vim_has {
+    local vim="$1"
+    local feature="$2"
+
+    # We can't use `vim --version` because neovim is too unique to print
+    # +/-python{,3}, so instead we get to play stupid games with script(1).
+    local uname="$(uname)"
+    case "${uname}" in
+        Linux) echo $(script -eqc "${vim} -S <(echo -e \"echo 'x=' . has('${feature}')\\nqa!\")" /dev/null | grep -o 'x=.' | grep -o '[[:digit:]]' -m 1);;
+        Darwin | FreeBSD) echo $(script -q /dev/null ${vim} -S <(echo -e "echo 'x=' . has('${feature}')\nqa!") | grep -o 'x=.' | grep -o '[[:digit:]]' -m 1);;
+        *) >&2 echo "ERROR: Unknown uname: ${uname}; Vim feature detection not supported"; false;;
+    esac
+}
+
+if [ -z "${PY3+x}" ]; then
+    VIM="${VIM:-vim}"
+    echo "PY3 not specified; inferring Python version from ${VIM}"
+    have_py2=$(vim_has ${VIM} python)
+    have_py3=$(vim_has ${VIM} python3)
+    if [ "${have_py3}" -eq "1" ]; then
+        echo "Python 3 selected"
         PY3="ON"
-    else
+    elif [ "${have_py2}" -eq "1" ]; then
+        echo "Python 2 selected"
         PY3="OFF"
+    else
+        >&2 echo "ERROR: No Python support detected"
+        false
     fi
+else
+    case "${PY3}" in
+        ON) echo "Python 3 selected by PY3=${PY3}";;
+        OFF) echo "Python 2 selected by PY3=${PY3}";;
+        *) >&2 echo "ERROR: invalid PY3=${PY3}"; false;;
+    esac
 fi
-echo "PY3=$PY3"
 
-rm -rf build
+rm -rf bin build
 mkdir -p build
-{
+(
     cd build
-    cmake -DPY3:BOOL=$PY3 ..
-    make install
-}
+    cmake -DPY3:BOOL=${PY3} ..
+    make install && make test
+)