get rid of bashisms

lib/main.sh

@@ -55,8 +55,8 @@ main_init () {
   # register trap
   trap '
     main_terminate
-    trap - SIGTERM && kill -- -$$ SIGINT SIGTERM EXIT
+    trap - TERM && kill -- -$$ INT TERM EXIT
-  ' SIGINT SIGTERM EXIT
+  ' INT TERM EXIT
 
   # check if reporter exists
   if ! in_array $__REPORTER "$__AVAILABLE_REPORTERS"; then

lib/utils/functions.sh

@@ -9,3 +9,26 @@ copy_function () {
   is_function $1 || return 1
   eval "$(echo "${2}()"; declare -f ${1} | tail -n +2)"
 }
+
+# if `type declare | grep -q 'shell builtin$'`; then
+#   is_function () {
+#     declare -f -F $1 > /dev/null; return $?
+#   }
+
+#   # http://stackoverflow.com/a/1369211/183097
+#   copy_function () {
+#     is_function $1 || return 1
+#     eval "$(echo "${2}()"; declare -f ${1} | tail -n +2)"
+#   }
+
+# # `declare` is non-posix, provide alternative
+# else
+#   is_function () {
+#     type $1 | grep -q 'shell function$'
+#   }
+
+#   copy_function () {
+#     is_function $1 || return 1
+#     echo "${2}() { ${1} }"
+#   }
+# fi

lib/utils/helpers.sh

@@ -11,7 +11,7 @@ iso_date () {
 in_array () {
   local item=$1
   local arr=$2
-  [[ " $2 " = *" $1 "* ]]
+  echo " $2 " | grep -q " $1 "
 }
 
 trim () {

lib/utils/os.sh

@@ -1,5 +1,10 @@
 #!/bin/sh
 
+# OSTYPE is non-posix, provide alternative
+if [ -z $OSTYPE ]; then
+  OSTYPE=$(uname | tr '[:upper:]' '[:lower:]')
+fi
+
 readonly OS_TYPE=$(case "$OSTYPE" in
   (solaris*) echo solaris;;
   (darwin*)  echo osx;;
@@ -17,7 +22,7 @@ is_unknown () { [ $OS_TYPE = 'unknown' ]; }
 # http://unix.stackexchange.com/a/84980/50905
 if is_osx; then
   make_temp_dir () {
-    mktemp -d -t 'sysmetrics'
+    mktemp -d -t 'metrics'
   }
 else
   make_temp_dir () {

reporters/keen_io.sh

@@ -16,9 +16,9 @@ init() {
   fi
 
   __keen_io_api_url="https://api.keen.io/3.0"
-  __keen_io_api_url+="/projects/$KEEN_IO_PROJECT_ID"
+  __keen_io_api_url="$__keen_io_api_url/projects/$KEEN_IO_PROJECT_ID"
-  __keen_io_api_url+="/events/$KEEN_IO_EVENT_COLLECTION"
+  __keen_io_api_url="$__keen_io_api_url/events/$KEEN_IO_EVENT_COLLECTION"
-  __keen_io_api_url+="?api_key=$KEEN_IO_WRITE_KEY"
+  __keen_io_api_url="$__keen_io_api_url?api_key=$KEEN_IO_WRITE_KEY"
 }
 
 report () {