From d69e6c2659fc46c771fecb29c32452e581a271c3 Mon Sep 17 00:00:00 2001
From: luorong1999 <lr1999@mail.ustc.edu.cn>
Date: Sun, 15 Jun 2025 05:06:12 +0800
Subject: [PATCH] ADD new api for modules equalstring

---
 src/module.c      | 9 +++++++++
 src/redismodule.h | 2 ++
 2 files changed, 11 insertions(+)

diff --git a/src/module.c b/src/module.c
index 9caa2ebf1..568cd6e0c 100644
--- a/src/module.c
+++ b/src/module.c
@@ -2953,6 +2953,14 @@ int RM_StringCompare(const RedisModuleString *a, const RedisModuleString *b) {
     return compareStringObjects(a,b);
 }
 
+/* Equal two string objects, return 1 if a and b are the same from the
+ * point of view of a string comparison, otherwise 0 is returned. Note that 
+ * this function is faster than checking for (RM_StringCompare(a,b) == 0) 
+ * because it can perform some more optimization. */
+int RM_EqualString(const RedisModuleString *a, const RedisModuleString *b) {
+    return equalStringObjects(a,b);
+}
+
 /* Return the (possibly modified in encoding) input 'str' object if
  * the string is unshared, otherwise NULL is returned. */
 RedisModuleString *moduleAssertUnsharedString(RedisModuleString *str) {
@@ -14360,6 +14368,7 @@ void moduleRegisterCoreAPI(void) {
     REGISTER_API(RetainString);
     REGISTER_API(HoldString);
     REGISTER_API(StringCompare);
+    REGISTER_API(EqualString);
     REGISTER_API(GetContextFromIO);
     REGISTER_API(GetKeyNameFromIO);
     REGISTER_API(GetKeyNameFromModuleKey);
diff --git a/src/redismodule.h b/src/redismodule.h
index 0b395feaf..2b7600427 100644
--- a/src/redismodule.h
+++ b/src/redismodule.h
@@ -1148,6 +1148,7 @@ REDISMODULE_API void (*RedisModule_TrimStringAllocation)(RedisModuleString *str)
 REDISMODULE_API void (*RedisModule_RetainString)(RedisModuleCtx *ctx, RedisModuleString *str) REDISMODULE_ATTR;
 REDISMODULE_API RedisModuleString * (*RedisModule_HoldString)(RedisModuleCtx *ctx, RedisModuleString *str) REDISMODULE_ATTR;
 REDISMODULE_API int (*RedisModule_StringCompare)(const RedisModuleString *a, const RedisModuleString *b) REDISMODULE_ATTR;
+REDISMODULE_API int (*RedisModule_EqualString)(const RedisModuleString *a, const RedisModuleString *b) REDISMODULE_ATTR;
 REDISMODULE_API RedisModuleCtx * (*RedisModule_GetContextFromIO)(RedisModuleIO *io) REDISMODULE_ATTR;
 REDISMODULE_API const RedisModuleString * (*RedisModule_GetKeyNameFromIO)(RedisModuleIO *io) REDISMODULE_ATTR;
 REDISMODULE_API const RedisModuleString * (*RedisModule_GetKeyNameFromModuleKey)(RedisModuleKey *key) REDISMODULE_ATTR;
@@ -1518,6 +1519,7 @@ static int RedisModule_Init(RedisModuleCtx *ctx, const char *name, int ver, int
     REDISMODULE_GET_API(RetainString);
     REDISMODULE_GET_API(HoldString);
     REDISMODULE_GET_API(StringCompare);
+    REDISMODULE_GET_API(EqualString);
     REDISMODULE_GET_API(GetContextFromIO);
     REDISMODULE_GET_API(GetKeyNameFromIO);
     REDISMODULE_GET_API(GetKeyNameFromModuleKey);