With no options default query to '$.*'. Nameless array fix + tests

Author: mclarkson

JSONPath.sh

@@ -103,9 +103,9 @@ usage() {
 # ---------------------------------------------------------------------------
 
   echo
-  echo "Usage: JSONPath.sh [-n] [-s] [-b] [j] [-h] [-f FILE] pattern"
+  echo "Usage: JSONPath.sh [-n] [-s] [-b] [j] [-h] [-f FILE] [pattern]"
   echo
-  echo "pattern - the JSON Path query, e.g. \"$..\""
+  echo "pattern - the JSONPath query. Defaults to '$.*' if not supplied."
   echo "-s      - Remove escaping of the solidus symbol (straight slash)."
   echo "-b      - Brief. Only show values."
   echo "-j      - JSON ouput."
@@ -156,6 +156,7 @@ parse_options() {
     shift 1
     ARGN=$((ARGN-1))
   done
+  [[ -z $QUERY ]] && QUERY='$.*'
 }
 
 # ---------------------------------------------------------------------------
@@ -378,6 +379,8 @@ create_filter() {
               a=${a%]}
               if [[ $a =~ [[:alpha:]] ]]; then
                 a=$(echo $a | sed -r "s/[\"']//g;s/([^,]*)/\"\1\"/g")
+              else
+                [[ $i -gt 0 ]] && comma=","
               fi
               #idx=$(echo "${PATHTOKENS[i]}" | tr -d "[]")
               query+="$comma$a"

README.md

@@ -6,10 +6,10 @@ yo, so it's a JSONPath implementation written in Bash - and it probably only wor
 
 ## Invocation
 
-    JSONPath.sh [-n] [-s] [-b] [-i] [-j] [-h] [-p] [-u] [-f FILE] pattern
+    JSONPath.sh [-n] [-s] [-b] [-i] [-j] [-h] [-p] [-u] [-f FILE] [pattern]
 
 pattern
-> the JSONPath query
+> the JSONPath query. Defaults to '$.\*' if not supplied.
 
 -b
 > Brief output. Only show the values, not the path and key.
@@ -71,7 +71,7 @@ mv JSONPath.sh ~/bin
 ## Examples
 
 ``` bash
-$ ./JSONPath.sh '$.*' < package.json
+$ ./JSONPath.sh < package.json
 ["name"]        "JSONPath.sh"
 ["version"]     "0.0.0"
 ["description"] "JSONPath implementation written in Bash"

test/valid/kubectl_get_pods_large.argp1

@@ -0,0 +1 @@
+$..[0]..metadata..["owner.*","name"]