64 bit integer to string conversion optimization

Author: mobizt

src/cloud_storage/DataOptions.h

@@ -1,5 +1,5 @@
 /**
- * Created April 4, 2024
+ * Created October 29, 2024
  *
  * The MIT License (MIT)
  * Copyright (c) 2024 K. Suwatchai (Mobizt)
@@ -103,31 +103,31 @@ namespace GoogleCloudStorage
     public:
         BaseOptions &generation(uint64_t value)
         {
-            buf[1] = "generation=" + sut.u64Str(value);
+            buf[1] = "generation=" + sut.num2Str(value);
             return setBuf();
         }
 
         BaseOptions &ifGenerationMatch(uint64_t value)
         {
-            buf[2] = "ifGenerationMatch=" + sut.u64Str(value);
+            buf[2] = "ifGenerationMatch=" + sut.num2Str(value);
             return setBuf();
         }
 
         BaseOptions &ifGenerationNotMatch(uint64_t value)
         {
-            buf[3] = "ifGenerationNotMatch=" + sut.u64Str(value);
+            buf[3] = "ifGenerationNotMatch=" + sut.num2Str(value);
             return setBuf();
         }
 
         BaseOptions &ifMetagenerationMatch(uint64_t value)
         {
-            buf[4] = "ifMetagenerationMatch=" + sut.u64Str(value);
+            buf[4] = "ifMetagenerationMatch=" + sut.num2Str(value);
             return setBuf();
         }
 
         BaseOptions &ifMetagenerationNotMatch(uint64_t value)
         {
-            buf[5] = "ifMetagenerationNotMatch=" + sut.u64Str(value);
+            buf[5] = "ifMetagenerationNotMatch=" + sut.num2Str(value);
             return setBuf();
         }
     };
@@ -185,25 +185,25 @@ namespace GoogleCloudStorage
 
         InsertOptions &ifGenerationMatch(uint64_t value)
         {
-            buf[2] = "ifGenerationMatch=" + sut.u64Str(value);
+            buf[2] = "ifGenerationMatch=" + sut.num2Str(value);
             return setBuf();
         }
 
         InsertOptions &ifGenerationNotMatch(uint64_t value)
         {
-            buf[3] = "ifGenerationNotMatch=" + sut.u64Str(value);
+            buf[3] = "ifGenerationNotMatch=" + sut.num2Str(value);
             return setBuf();
         }
 
         InsertOptions &ifMetagenerationMatch(uint64_t value)
         {
-            buf[4] = "ifMetagenerationMatch=" + sut.u64Str(value);
+            buf[4] = "ifMetagenerationMatch=" + sut.num2Str(value);
             return setBuf();
         }
 
         InsertOptions &ifMetagenerationNotMatch(uint64_t value)
         {
-            buf[5] = "ifMetagenerationNotMatch=" + sut.u64Str(value);
+            buf[5] = "ifMetagenerationNotMatch=" + sut.num2Str(value);
             return setBuf();
         }
 

src/core/StringUtil.h

@@ -98,22 +98,6 @@ class StringUtil
 
     void addSp(String &buf) { buf += ' '; }
 
-    String u64Str(uint64_t val)
-    {
-        // Some cores do not provide 64-bit integer to string conversion.
-        String v;
-        char buffer[21];
-        char *ndx = &buffer[sizeof(buffer) - 1];
-        *ndx = '\0';
-        do
-        {
-            *--ndx = val % 10 + '0';
-            val = val / 10;
-        } while (val != 0);
-        v = ndx;
-        return v;
-    }
-
     // Some cores do not provide 64-bit integer to string conversion.
     template <typename T = uint64_t>
     auto num2Str(T val, bool negative = false) -> typename std::enable_if<(std::is_same<T, uint64_t>::value), String>::type

src/functions/DataOptions.h

@@ -1,5 +1,5 @@
 /**
- * Created June 12, 2024
+ * Created October 29, 2024
  *
  * The MIT License (MIT)
  * Copyright (c) 2024 K. Suwatchai (Mobizt)
@@ -466,7 +466,7 @@ namespace GoogleCloudFunctions
         // Maximum number of functions to return per call. The largest allowed pageSize is 1,000, if the pageSize is omitted or specified as greater than 1,000 then it will be replaced as 1,000. The size of the list response can be less than specified when used with filters.
         ListOptions &pageSize(uint64_t value)
         {
-            buf[1] = "pageSize=" + sut.u64Str(value);
+            buf[1] = "pageSize=" + sut.num2Str(value);
             return setBuf();
         }