From 48770dd34179b41c5d00e07b7b217172ef4a0514 Mon Sep 17 00:00:00 2001
From: gb <741021719@qq.com>
Date: Tue, 7 Feb 2023 16:51:53 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0cJSON=E5=9F=9Futf8=E8=BD=ACun?=
 =?UTF-8?q?icode=E5=87=BD=E6=95=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 hgsane/cJSON.c | 38 ++++++++++++++++++++++++++++++++++++++
 hgsane/cJSON.h |  3 +++
 2 files changed, 41 insertions(+)

diff --git a/hgsane/cJSON.c b/hgsane/cJSON.c
index f3dc5bc..cd60134 100644
--- a/hgsane/cJSON.c
+++ b/hgsane/cJSON.c
@@ -253,6 +253,44 @@ static const char *parse_string(cJSON *item,const char *str)
 	item->type=cJSON_String;
 	return ptr;
 }
+char* cJSON_utf8_2_unic(const char* utf8)
+{
+	char* unic = (char*)malloc(strlen(utf8) * 3 + 8);
+	unsigned char	* cur = unic;
+
+	while (*cur = *utf8++)
+	{
+		if ((*cur & 0x0f0) == 0x0e0)
+		{
+			if (((unsigned char)utf8[0] & 0x0c0) == 0x80 &&
+				((unsigned char)utf8[1] & 0x0c0) == 0x80)
+			{
+				char* hex = "0123456789ABCDEF";
+				unsigned short us = *cur & 0x0f;
+				us <<= 6;
+				us += utf8[0] & 0x3f;
+				us <<= 6;
+				us += utf8[1] & 0x3f;
+
+				*cur++ = '\\';
+				*cur++ = 'u';
+				cur[3] = hex[us & 0x0f];
+				us >>= 4;
+				cur[2] = hex[us & 0x0f];
+				us >>= 4;
+				cur[1] = hex[us & 0x0f];
+				us >>= 4;
+				cur[0] = hex[us & 0x0f];
+				cur += 3;
+				utf8 += 2;
+			}
+		}
+		cur++;
+	}
+	*cur++ = 0;
+
+	return unic;
+}
 
 /* Render the cstring provided to an escaped version that can be printed. */
 static char *print_string_ptr(const char *str,printbuffer *p)
diff --git a/hgsane/cJSON.h b/hgsane/cJSON.h
index 58b91ef..913bc1e 100644
--- a/hgsane/cJSON.h
+++ b/hgsane/cJSON.h
@@ -135,6 +135,9 @@ extern cJSON *cJSON_ParseWithOpts(const char *value,const char **return_parse_en
 
 extern void cJSON_Minify(char *json);
 
+// convert e681a2 to \u6062, call 'free' to free the returned value
+extern char* cJSON_utf8_2_unic(const char* utf8);
+
 /* Macros for creating things quickly. */
 #define cJSON_AddNullToObject(object,name)		cJSON_AddItemToObject(object, name, cJSON_CreateNull())
 #define cJSON_AddTrueToObject(object,name)		cJSON_AddItemToObject(object, name, cJSON_CreateTrue())