epm-sh-functions: add get_json_value and get_json_values

bin/epm-sh-functions

@@ -768,6 +768,20 @@ eget()
     $EGET "$@"
 }
 
+# copied from parse_json_value from play.d/common.sh
+get_json_value()
+{
+    local field="$1"
+    echo "$field" | grep -q -E "^\[" || field='["'$field'"]'
+    epm tool json -b | grep -m1 -F "$field" | sed -e 's|.*[[:space:]]||' | sed -e 's|"\(.*\)"|\1|g'
+}
+
+get_json_values()
+{
+    local field="$1"
+    echo "$field" | grep -q -E "^\[" || field="\[$(echo "$field" | sed 's/[^ ]*/"&"/g' | sed 's/ /,/g'),[0-9]*\]"
+    epm tool json -b | grep "^$field" | sed -e 's|.*[[:space:]]||' | sed -e 's|"\(.*\)"|\1|g'
+}
 
 __epm_assure_7zip()
 {