The oroginal 0.8.5 from Stefan Goessner

From the Google Code Archive of JSON Path at: https://code.google.com/archive/p/jsonpath/

Author: brunerd

jsonpath.js

@@ -0,0 +1,90 @@
+/* JSONPath 0.8.5 - XPath for JSON
+ *
+ * Copyright (c) 2007 Stefan Goessner (goessner.net)
+ * Licensed under the MIT (MIT-LICENSE.txt) licence.
+ *
+ * Proposal of Chris Zyp goes into version 0.9.x
+ * Issue 7 resolved
+ */
+function jsonPath(obj, expr, arg) {
+   var P = {
+      resultType: arg && arg.resultType || "VALUE",
+      result: [],
+      normalize: function(expr) {
+         var subx = [];
+         return expr.replace(/[\['](\??\(.*?\))[\]']|\['(.*?)'\]/g, function($0,$1,$2){return "[#"+(subx.push($1||$2)-1)+"]";})  /* http://code.google.com/p/jsonpath/issues/detail?id=4 */
+                    .replace(/'?\.'?|\['?/g, ";")
+                    .replace(/;;;|;;/g, ";..;")
+                    .replace(/;$|'?\]|'$/g, "")
+                    .replace(/#([0-9]+)/g, function($0,$1){return subx[$1];});
+      },
+      asPath: function(path) {
+         var x = path.split(";"), p = "$";
+         for (var i=1,n=x.length; i<n; i++)
+            p += /^[0-9*]+$/.test(x[i]) ? ("["+x[i]+"]") : ("['"+x[i]+"']");
+         return p;
+      },
+      store: function(p, v) {
+         if (p) P.result[P.result.length] = P.resultType == "PATH" ? P.asPath(p) : v;
+         return !!p;
+      },
+      trace: function(expr, val, path) {
+         if (expr !== "") {
+            var x = expr.split(";"), loc = x.shift();
+            x = x.join(";");
+            if (val && val.hasOwnProperty(loc))
+               P.trace(x, val[loc], path + ";" + loc);
+            else if (loc === "*")
+               P.walk(loc, x, val, path, function(m,l,x,v,p) { P.trace(m+";"+x,v,p); });
+            else if (loc === "..") {
+               P.trace(x, val, path);
+               P.walk(loc, x, val, path, function(m,l,x,v,p) { typeof v[m] === "object" && P.trace("..;"+x,v[m],p+";"+m); });
+            }
+            else if (/^\(.*?\)$/.test(loc)) /* [(expr)] */
+               P.trace(P.eval(loc, val, path.substr(path.lastIndexOf(";")+1))+";"+x, val, path);
+            else if (/^\?\(.*?\)$/.test(loc)) /* [?(expr)] */
+               P.walk(loc, x, val, path, function(m,l,x,v,p) { if (P.eval(l.replace(/^\?\((.*?)\)$/,"$1"), v instanceof Array ? v[m] : v, m)) P.trace(m+";"+x,v,p); }); /* issue 5 resolved */
+            else if (/^(-?[0-9]*):(-?[0-9]*):?([0-9]*)$/.test(loc)) / [start:end:step]  /* python slice syntax */
+               P.slice(loc, x, val, path);
+            else if (/,/.test(loc)) { /* [name1,name2,...] */
+               for (var s=loc.split(/'?,'?/),i=0,n=s.length; i<n; i++)
+                  P.trace(s[i]+";"+x, val, path);
+            }
+         }
+         else
+            P.store(path, val);
+      },
+      walk: function(loc, expr, val, path, f) {
+         if (val instanceof Array) {
+            for (var i=0,n=val.length; i<n; i++)
+               if (i in val)
+                  f(i,loc,expr,val,path);
+         }
+         else if (typeof val === "object") {
+            for (var m in val)
+               if (val.hasOwnProperty(m))
+                  f(m,loc,expr,val,path);
+         }
+      },
+      slice: function(loc, expr, val, path) {
+         if (val instanceof Array) {
+            var len=val.length, start=0, end=len, step=1;
+            loc.replace(/^(-?[0-9]*):(-?[0-9]*):?(-?[0-9]*)$/g, function($0,$1,$2,$3){start=parseInt($1||start);end=parseInt($2||end);step=parseInt($3||step);});
+            start = (start < 0) ? Math.max(0,start+len) : Math.min(len,start);
+            end   = (end < 0)   ? Math.max(0,end+len)   : Math.min(len,end);
+            for (var i=start; i<end; i+=step)
+               P.trace(i+";"+expr, val, path);
+         }
+      },
+      eval: function(x, _v, _vname) {
+         try { return $ && _v && eval(x.replace(/(^|[^\\])@/g, "$1_v").replace(/\\@/g, "@")); }  /* issue 7 : resolved */
+         catch(e) { throw new SyntaxError("jsonPath: " + e.message + ": " + x.replace(/(^|[^\\])@/g, "$1_v").replace(/\\@/g, "@")); }  /* issue 7 : resolved */
+      }
+   };
+
+   var $ = obj;
+   if (expr && obj && (P.resultType == "VALUE" || P.resultType == "PATH")) {
+      P.trace(P.normalize(expr).replace(/^\$;?/,""), obj, "$");  /* issue 6 resolved */
+      return P.result.length ? P.result : false;
+   }
+}