Added advanced options (-v -V -o, etc) to the script

README.md

@@ -1,2 +1,45 @@
 # json.sh
-A portable shell JSON interpreter.
+json.sh is a very portable JSON parser-- 
+it should work in just about any shell you throw at it.
+Right now, it can only parse and output variables etc
+in a JSON file in a more script-friendly form, but write
+support will be added later.
+
+
+Usage
+-------
+To use json.sh, you can simply run `json.sh` with a filename as an argument.
+Here's an example command and it's output:
+`sh json.sh example.json`
+`
+/animals
+/animals/pig
+/animals/pig/tail
+/animals/pig/tail = curly
+/animals/pig/nose
+/animals/pig/nose = adorable
+/animals/sheep
+/animals/sheep/tail
+/animals/sheep/tail = short
+/animals/sheep/nose
+/animals/sheep/nose = ugly
+`
+
+There are also a few useful arguments you should keep note of:
+| argument | description |
+| --- | --- |
+| `-v $string` | Only print variables with the name `$string` |
+| `-s $string` | Only print the value of the variable `$string` |
+| `-V $string` | Only print variables with the value `$string` |
+| `-o $string` | Only print the object `$string` |
+
+With `-v` and `-s`, for example, `$string` could be anything from `tail` to `/pig/tail` to `/animals/pig/tail`.
+Same syntax goes for `-o`. `-V` is the only odd one out-- it's `$string` needs to be a variable's value, like `adorable` from `/pig/nose`.
+
+
+
+Licensing
+-----------
+All of ST is released under the
+[ISC](https://opensource.org/licenses/ISC) license.
+

json.sh

@@ -66,7 +66,7 @@ do
                 endword
             fi
         ;;
-        \")
+        "\"")
             if [ $NEWWORD -eq 1 ]
             then
                 endword
@@ -98,4 +98,56 @@ do
 done < "$1"
 }
 
-json $1
+varmatch=0
+objmatch=0
+silmatch=0
+valmatch=0
+match=''
+arguments=''
+na=0
+for argument in $@
+do
+    case $argument in
+        -v)
+		na=1
+		varmatch=1
+		;;
+        -V)
+		na=1
+		valmatch=1
+		;;
+	-s)
+		na=1
+		silmatch=1
+		;;
+	-o)
+		na=1
+		objmatch=1
+		;;
+	*)
+		if [ $na -eq 1 ] && [ $objmatch -eq 1 ]
+		then
+			match="$argument\$"
+		elif [ $na -eq 1 ] && [ $varmatch -eq 1 ]
+		then
+			match="$argument\ ="
+		elif [ $na -eq 1 ] && [ $silmatch -eq 1 ]
+		then
+			match="$argument\ ="
+		elif [ $na -eq 1 ] && [ $valmatch -eq 1 ]
+		then
+			match="=\ $argument\$"
+		else
+			file="$argument"
+		fi
+		na=0
+		;;
+esac
+done
+
+if [ $silmatch -eq 1 ]
+then
+    json $file | grep "$match" | sed 's/.*= //'
+else
+    json $file | grep "$match"
+fi