Added SQL_QuoteString to include/tests

plugins/include/sqlx.inc

@@ -62,6 +62,34 @@ native Handle:SQL_Connect(Handle:cn_tuple, &errcode, error[], maxlength);
 native Handle:SQL_PrepareQuery(Handle:db, const fmt[], {Float,_}:...);
 
 
+/**
+ * Back-quotes characters in a string for database querying.
+ * Note: The buffer's maximum size should be 2*strlen(string) to catch
+ * all scenarios.
+ *
+ * @param db				Database handle, for localization.
+ * @param buffer			Buffer to copy to.
+ * @param buflen			Maximum size of the buffer.
+ * @param string			String to backquote (should not overlap buffer).
+ * @return					Length of new string, or -1 on failure.
+ */
+native SQL_QuoteString(Handle:db, buffer[], buflen, const string[]);
+
+/**
+ * Back-quotes characters in a string for database querying.
+ * Note: The buffer's maximum size should be 2*strlen(string) to catch
+ * all scenarios.
+ *
+ * @param db				Database handle, for localization.
+ * @param buffer			Buffer to copy to.
+ * @param buflen			Maximum size of the buffer.
+ * @param fmt				Format of string to backquote (should not overlap buffer).
+ * @param ...				Format arguments.
+ * @return					Length of new string, or -1 on failure.
+ */
+native SQL_QuoteStringFmt(Handle:db, buffer[], buflen, const fmt[], any:...);
+
+
 #define TQUERY_CONNECT_FAILED	-2
 #define TQUERY_QUERY_FAILED	-1
 #define TQUERY_SUCCESS		0

plugins/testsuite/sqlxtest.sma

@@ -16,6 +16,7 @@ public plugin_init()
 	register_srvcmd("sqlx_test_old2", "SqlxTest_Old2")
 	register_srvcmd("sqlx_test_thread_end", "SqlxTest_ThreadEnd")
 	register_srvcmd("sqlx_test_bad", "SqlxTest_Bad")
+	register_srvcmd("sqlx_test_quote", "SqlxTest_Quote")
 	
 	new configsDir[64]
 	get_configsdir(configsDir, 63)
@@ -163,6 +164,30 @@ public SqlxTest_Thread()
 	g_QueryNum++
 }
 
+/**
+ * Tests string quoting
+ */
+public SqlxTest_Quote()
+{
+	DoBasicInfo(1)
+	
+	new errno, error[255]
+	
+	new Handle:db = SQL_Connect(g_DbInfo, errno, error, sizeof(error)-1)
+	if (!db)
+	{
+		server_print("Query failure: [%d] %s", errno, error)
+		return
+	}
+	
+	new buffer[500], num
+	num = SQL_QuoteString(buffer, sizeof(buffer)-1, "Hi y'all! C\lam")
+	
+	server_print("num: %d str: %s", num, buffer)
+	
+	SQL_FreeHandle(db)
+}
+
 /**
  * Does a normal query.
  */