From c347eb502beb52b63868f36051c0aa913f59a715 Mon Sep 17 00:00:00 2001
From: jadedctrl <jadedml@openmailbox.org>
Date: Sat, 25 Mar 2017 13:58:46 -0500
Subject: [PATCH] Full read support of JSON files

---
 example.json |  12 ++++
 json.sh      | 159 ++++++++++++++++++++++++++++++---------------------
 2 files changed, 105 insertions(+), 66 deletions(-)
 create mode 100644 example.json

diff --git a/example.json b/example.json
new file mode 100644
index 0000000..0d09c8b
--- /dev/null
+++ b/example.json
@@ -0,0 +1,12 @@
+{
+	"animals": {
+		"pig": {
+			"tail": "curly",
+			"nose": "adorable"
+		},
+		"sheep": {
+			"tail": "short",
+			"nose": "ugly"
+		}
+	}
+}
diff --git a/json.sh b/json.sh
index efa7d36..51c29fa 100644
--- a/json.sh
+++ b/json.sh
@@ -1,74 +1,101 @@
-#!/bin/sh
+#!/bin/sh -ex
+# WIP JSON parser
 
-# OK, this is going to be a convoluted state machine based on the following states:
-imov=0    # in middle of variable     [ "variable" = "..." ]
-imosv=0   # in middle of string value [ "..." = "value" ]
-imoo=0    # in middle of object       [ "object" {...} ]
-imoas=0   # in middle of ambiguous string 
-# And using the following vars:
-cv=''     # current variable
-lv=''     # last variable
-csv=''    # current string value
-lsv=''    # last string value
-co=''     # current object
-lo=''     # last object
-aco=''    # all current objects
-cas=''    # current abiguous string
+JGROUPS=''
+GROUPORVAR=0
+NEWWORD=0
 
-
-get_co() {
-	aco="$aco/$cas"
-	co=$(echo "$aco" | sed 's^.*/^^')
+endword() {
+    NEWWORD=0
+    if [ $GROUPORVAR -eq 1 ]
+    then 
+        echo "${JGROUPS}/$LASTWORD = $CURWORD"
+        GROUPORVAR=0
+    else
+        echo "${JGROUPS}/$CURWORD"
+    fi
+    LASTWORD=$CURWORD
+    CURWORD=''
+    TYPE=''
 }
 
-get_lo() {
-	lo=$co
-	aco=$(echo "$aco" | sed 's^/'"$lo"'^^')
+startword() {
+    NEWWORD=1
 }
 
+addword() {
+    CURWORD="${CURWORD}${1}"
+}
+
+
+json() {
 for char in $(cat $1 | sed 's/\(.\)/\1 /g')
 do
-	case $char in
-		"{")
-			imoas=0
-			imoo=1
-			get_co
-			;;
-		"}")
-			imoo=0
-			get_lo
-			;;
-		"\"")
-			if [ $imosv -eq 1 ]
-			then
-				imosv=0
-				echo "$cv: $csv"
-			elif [ $imoas -eq 1 ]
-			then
-				imoas=0
-				imosv=1
-				cv="$cas"
-			else
-				imoas=1
-			fi
-			;;
-		":")
-			echo "Ignore" > /dev/null
-			;;
-		",")
-			echo "Ignore" > /dev/null
-			;;
-		*)
-			if [ $imoas -eq 1 ]
-			then
-				cas="${cas}${char}"
-			elif [ $imosv -eq 1 ]
-			then
-				csv="${csv}${char}"
-			else
-				echo "Ignored: $char"
-			fi
-			;;
-	esac
-	echo "$char     | $imov $imosv $imoo $imoas"
-done
+    case "$char" in
+        ' ')
+            if [ $NEWWORD -eq 1 ] && [ $TYPE == "string" ]
+            then
+                addword $char
+            fi
+            ;;
+#   Works in bash, not in sh.
+#       [[:alpha:]])
+        [ABCDEFGHIJKLMNOPQRSTUVWXYZ])
+            addword $char
+        ;;
+        [abcdefghijklmnopqrstuvwxyz])
+            addword $char 
+        ;;
+#       [[:digit:]])
+        [0123456789])
+            if [ $NEWWORD -eq 1 ]
+            then
+                addword $char
+            else
+                TYPE="number"
+                startword
+                addword $char
+            fi
+        ;;
+        [,])
+            if [ $NEWWORD -eq 1 ] && [ $TYPE == "string" ]
+            then
+                addword $char
+            elif [ $NEWWORD -eq 1 ] && [ $TYPE == "number" ]
+            then
+                endword
+            fi
+        ;;
+        \")
+            if [ $NEWWORD -eq 1 ]
+            then
+                endword
+            else
+                TYPE="string"
+                startword
+            fi
+        ;;
+        ':')
+            GROUPORVAR=1
+        ;;
+        '{')
+            if [ $GROUPORVAR -eq 1 ]
+            then
+                CURGROUP="${LASTWORD}"
+                JGROUPS="${JGROUPS}/${CURGROUP}"
+                GROUPORVAR=0
+            fi
+        ;;
+        '}')
+            if [ $NEWWORD -eq 1 ] && [ $TYPE == "number" ]
+            then
+                endword
+            fi
+            JGROUPS=$(echo $JGROUPS | sed 's@/'$CURGROUP'$@@')
+            CURGROUP=$(echo $JGROUPS | grep -oE '[^/]+$')
+            ;;
+    esac
+done < "$1"
+}
+
+json $1