added: cmake glue for adding bash tab completion for an installed product

CMakeLists.txt

@@ -161,3 +161,6 @@ endif()
 
 # Install build system files
 install(DIRECTORY cmake DESTINATION share/opm)
+
+# Install tab completion skeleton
+install(FILES etc/opm_bash_completion.sh.in DESTINATION share/opm/etc)

cmake/Modules/OpmBashCompletion.cmake

@@ -0,0 +1,6 @@
+# Installs bash tab completion for a product
+macro(opm_add_bash_completion binary)
+  set(PRODUCT ${binary})
+  configure_file(${OPM_MACROS_ROOT}/etc/opm_bash_completion.sh.in ${binary}_bash_completion.sh @ONLY)
+  install(FILES ${PROJECT_BINARY_DIR}/${binary}_bash_completion.sh DESTINATION ${CMAKE_INSTALL_SYSCONFDIR}/bash_completion.d)
+endmacro()

etc/opm_bash_completion.sh.in

@@ -0,0 +1,60 @@
+# this snippet enables parameter completion via the tabulator key
+# for bash for opm products.
+
+# this is a bash readline completer for the case where a binary is
+# already known to be an eWoms simulator.
+_ewoms_parameter_completor()
+{
+    if test "$COMP_WORDS" == ""; then
+        return 0
+    fi
+
+    cmd="${COMP_WORDS[0]}"
+    cur="${COMP_WORDS[COMP_CWORD]}"
+    fullcmd="$(which "$cmd")"
+    ALL_OPTS=$("$fullcmd" --help 2> /dev/null | grep '^ *--' | sed 's/ *\(--[a-zA-Z0-9\-]*\)=.*/\1=/')
+    ALL_OPTS=$(echo "$ALL_OPTS" | sed 's/^ *--help.*/--help/')
+    COMPREPLY=( $(compgen -A file -W "$ALL_OPTS" -- "${cur}") )
+}
+
+# this is a bash readline default completer which attempts to find out
+# if a given binary is an eWoms simulation. this needs to be set as a
+# default completer because the name of eWoms binaries cannot be known
+# a-priori.
+_ewoms_generic_parameter_completor()
+{
+    if test "$COMP_WORDS" == ""; then
+        return 0
+    fi
+
+    COMPREPLY=()
+    local cmd cur ALL_OPTS
+    cmd="${COMP_WORDS[0]}"
+    cur="${COMP_WORDS[COMP_CWORD]}"
+
+    fullcmd="$(which "$cmd")"
+    if test -z "$fullcmd" || \
+       ! test -x "$fullcmd" || \
+       (! test -f "$fullcmd" && ! test -h "$fullcmd" ) || \
+       ! test -r "$fullcmd" || \
+       ! grep -q "Ewoms[a-zA-Z0-9]*Simulator[a-zA-Z0-0]" "$fullcmd"
+    then
+        if test -n "$DEFAULT_COMPLETION_LOADER"; then
+            "$DEFAULT_COMPLETION_LOADER" $@
+        elif type -t _completion_loader 2>&1 > /dev/null; then
+            # the default DEFAULT_COMPLETION_LOADER variable has not
+            # been set and the _completion_loader function exists, so
+            # we use _completion_loader as the default completer.
+            _completion_loader $@
+        else
+            return 1
+        fi
+
+        return $?
+    fi
+
+    _ewoms_parameter_completor $@
+    return 0
+}
+
+complete -o nospace -F _ewoms_parameter_completor @PRODUCT@