From 68cf267b1d6590af3cb6f4a08da33ec8ef6c3e5d Mon Sep 17 00:00:00 2001
From: Cheng Zhao <zcbenz@gmail.com>
Date: Wed, 18 May 2016 15:49:33 +0900
Subject: [PATCH] Do not convert NSDictionary to JSON

---
 atom/browser/mac/dict_util.mm | 100 ++++++++++++++++++++++++++++++++++++------
 1 file changed, 87 insertions(+), 13 deletions(-)

diff --git a/atom/browser/mac/dict_util.mm b/atom/browser/mac/dict_util.mm
index 1889095..f880cda 100644
--- a/atom/browser/mac/dict_util.mm
+++ b/atom/browser/mac/dict_util.mm
@@ -4,13 +4,55 @@
 
 #include "atom/browser/mac/dict_util.h"
 
-#include "base/mac/scoped_nsobject.h"
-#include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
+#include "base/strings/sys_string_conversions.h"
 #include "base/values.h"
 
 namespace atom {
 
+namespace {
+
+scoped_ptr<base::ListValue> NSArrayToListValue(NSArray* arr) {
+  if (!arr)
+    return nullptr;
+
+  scoped_ptr<base::ListValue> result(new base::ListValue);
+  for (id value in arr) {
+    if ([value isKindOfClass:[NSString class]]) {
+      result->AppendString(base::SysNSStringToUTF8(value));
+    } else if ([value isKindOfClass:[NSNumber class]]) {
+      const char* objc_type = [value objCType];
+      if (strcmp(objc_type, @encode(BOOL)) == 0 ||
+          strcmp(objc_type, @encode(char)) == 0)
+        result->AppendBoolean([value boolValue]);
+      else if (strcmp(objc_type, @encode(double)) == 0 ||
+               strcmp(objc_type, @encode(float)) == 0)
+        result->AppendDouble([value doubleValue]);
+      else
+        result->AppendInteger([value intValue]);
+    } else if ([value isKindOfClass:[NSArray class]]) {
+      scoped_ptr<base::ListValue> sub_arr = NSArrayToListValue(value);
+      if (sub_arr)
+        result->Append(std::move(sub_arr));
+      else
+        result->Append(base::Value::CreateNullValue());
+    } else if ([value isKindOfClass:[NSDictionary class]]) {
+      scoped_ptr<base::DictionaryValue> sub_dict =
+          NSDictionaryToDictionaryValue(value);
+      if (sub_dict)
+        result->Append(std::move(sub_dict));
+      else
+        result->Append(base::Value::CreateNullValue());
+    } else {
+      result->Append(base::Value::CreateNullValue());
+    }
+  }
+
+  return result;
+}
+
+}  // namespace
+
 NSDictionary* DictionaryValueToNSDictionary(const base::DictionaryValue& value) {
   std::string json;
   if (!base::JSONWriter::Write(value, &json))
@@ -26,20 +68,52 @@ NSDictionary* DictionaryValueToNSDictionary(const base::DictionaryValue& value)
 
 scoped_ptr<base::DictionaryValue> NSDictionaryToDictionaryValue(
     NSDictionary* dict) {
-  if (!dict || ![NSJSONSerialization isValidJSONObject:dict])
+  if (!dict)
     return nullptr;
 
-  NSData* data = [NSJSONSerialization dataWithJSONObject:dict
-                                                 options:0
-                                                   error:nil];
-  if (!data)
-    return nullptr;
+  scoped_ptr<base::DictionaryValue> result(new base::DictionaryValue);
+  for (id key in dict) {
+    std::string str_key;
+    if ([key isKindOfClass:[NSString class]])
+      str_key = base::SysNSStringToUTF8(key);
+    else
+      str_key = base::SysNSStringToUTF8([NSString stringWithFormat:@"%p", key]);
+
+    id value = [dict objectForKey:key];
+    if ([value isKindOfClass:[NSString class]]) {
+      result->SetStringWithoutPathExpansion(
+          str_key, base::SysNSStringToUTF8(value));
+    } else if ([value isKindOfClass:[NSNumber class]]) {
+      const char* objc_type = [value objCType];
+      if (strcmp(objc_type, @encode(BOOL)) == 0 ||
+          strcmp(objc_type, @encode(char)) == 0)
+        result->SetBooleanWithoutPathExpansion(str_key, [value boolValue]);
+      else if (strcmp(objc_type, @encode(double)) == 0 ||
+               strcmp(objc_type, @encode(float)) == 0)
+        result->SetDoubleWithoutPathExpansion(str_key, [value doubleValue]);
+      else
+        result->SetIntegerWithoutPathExpansion(str_key, [value intValue]);
+    } else if ([value isKindOfClass:[NSArray class]]) {
+      scoped_ptr<base::ListValue> sub_arr = NSArrayToListValue(value);
+      if (sub_arr)
+        result->SetWithoutPathExpansion(str_key, std::move(sub_arr));
+      else
+        result->SetWithoutPathExpansion(str_key,
+                                        base::Value::CreateNullValue());
+    } else if ([value isKindOfClass:[NSDictionary class]]) {
+      scoped_ptr<base::DictionaryValue> sub_dict =
+          NSDictionaryToDictionaryValue(value);
+      if (sub_dict)
+        result->SetWithoutPathExpansion(str_key, std::move(sub_dict));
+      else
+        result->SetWithoutPathExpansion(str_key,
+                                        base::Value::CreateNullValue());
+    } else {
+      result->SetWithoutPathExpansion(str_key, base::Value::CreateNullValue());
+    }
+  }
 
-  base::scoped_nsobject<NSString> json =
-      [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
-  scoped_ptr<base::Value> value =
-      base::JSONReader::Read([json UTF8String]);
-  return base::DictionaryValue::From(std::move(value));
+  return result;
 }
 
 }  // namespace atom
-- 
2.7.4