solidity string support

1 files changed, 28 insertions, 10 deletions

diff --git a/lib/abi.js b/lib/abi.js
index 21607f140..e80406ef9 100644
--- a/lib/abi.js
+++ b/lib/abi.js
@@ -21,6 +21,11 @@
  * @date 2014
  */
 
+// TODO: is these line is supposed to be here? 
+if (process.env.NODE_ENV !== 'build') {
+    var web3 = require('./web3'); // jshint ignore:line
+}
+
 // TODO: make these be actually accurate instead of falling back onto JS's doubles.
 var hexToDec = function (hex) {
     return parseInt(hex, 16).toString();
@@ -50,16 +55,20 @@ var padLeft = function (string, chars) {
 };
 
 var setupInputTypes = function () {
-    var prefixedType = function (prefix) {
+    // @param prefix is the string prefix of the type
+    // @param bitsInNumber is number of bits per number in type
+    var prefixedType = function (prefix, bitsInNumber) {
         return function (type, value) {
             var expected = prefix;
             if (type.indexOf(expected) !== 0) {
                 return false;
             }
 
-            var padding = parseInt(type.slice(expected.length)) / 8;
+            var padding = parseInt(type.slice(expected.length)) / 8 * bitsInNumber;
             if (typeof value === "number")
                 value = value.toString(16);
+            else if (typeof value === "string")
+                value = web3.toHex(value); 
             else if (value.indexOf('0x') === 0)
                 value = value.substr(2);
             else
@@ -83,9 +92,10 @@ var setupInputTypes = function () {
     };
 
     return [
-        prefixedType('uint'),
-        prefixedType('int'),
-        prefixedType('hash'),
+        prefixedType('uint', 1),
+        prefixedType('int', 1),
+        prefixedType('hash', 1),
+        prefixedType('string', 8),
         namedType('address', 20),
         namedType('bool', 1, formatBool),
     ];
@@ -118,14 +128,17 @@ var toAbiInput = function (json, methodName, params) {
 };
 
 var setupOutputTypes = function () {
-    var prefixedType = function (prefix) {
+
+    // @param prefix is the string prefix of the type
+    // @param bitsInNumber is number of bits per number in type
+    var prefixedType = function (prefix, bitsInNumber) {
         return function (type) {
             var expected = prefix;
             if (type.indexOf(expected) !== 0) {
                 return -1;
             }
 
-            var padding = parseInt(type.slice(expected.length)) / 8;
+            var padding = parseInt(type.slice(expected.length)) / 8 * bitsInNumber;
             return padding * 2;
         };
     };
@@ -148,10 +161,15 @@ var setupOutputTypes = function () {
         return value === '1' ? true : false;
     };
 
+    var formatString = function (value) {
+        return web3.toAscii(value);
+    };
+
     return [
-    { padding: prefixedType('uint'), format: formatInt },
-    { padding: prefixedType('int'), format: formatInt },
-    { padding: prefixedType('hash'), format: formatHash },
+    { padding: prefixedType('uint', 1), format: formatInt },
+    { padding: prefixedType('int', 1), format: formatInt },
+    { padding: prefixedType('hash', 1), format: formatHash },
+    { padding: prefixedType('string', 8), format: formatString },
     { padding: namedType('address', 20) },
     { padding: namedType('bool', 1), format: formatBool }
     ];