shlwapi: Implement StrFormatByteSizeEx.

dlls/shlwapi/shlwapi.spec

@@ -781,6 +781,7 @@
 @ stdcall -import StrDupW (wstr)
 @ stdcall StrFormatByteSize64A(int64 ptr long)
 @ stdcall StrFormatByteSizeA(long ptr long)
+@ stdcall StrFormatByteSizeEx(int64 long ptr long)
 @ stdcall StrFormatByteSizeW(int64 ptr long)
 @ stdcall StrFormatKBSizeA(int64 str long)
 @ stdcall StrFormatKBSizeW(int64 wstr long)

dlls/shlwapi/string.c

@@ -841,6 +841,30 @@ typedef struct tagSHLWAPI_BYTEFORMATS
  */
 LPWSTR WINAPI StrFormatByteSizeW(LONGLONG llBytes, LPWSTR lpszDest, UINT cchMax)
 {
+  HRESULT hr;
+
+  TRACE("(0x%s,%p,%d)\n", wine_dbgstr_longlong(llBytes), lpszDest, cchMax);
+
+  if (!lpszDest || !cchMax)
+    return lpszDest;
+
+  hr = StrFormatByteSizeEx(llBytes, SFBS_FLAGS_TRUNCATE_UNDISPLAYED_DECIMAL_DIGITS,
+                           lpszDest, cchMax);
+
+  if (FAILED(hr))
+    return NULL;
+
+  return lpszDest;
+}
+
+/*************************************************************************
+ * StrFormatByteSizeEx  [SHLWAPI.@]
+ *
+ */
+
+HRESULT WINAPI StrFormatByteSizeEx(LONGLONG llBytes, SFBS_FLAGS flags, LPWSTR lpszDest,
+                                   UINT cchMax)
+{
 #define KB ((ULONGLONG)1024)
 #define MB (KB*KB)
 #define GB (KB*KB*KB)
@@ -870,17 +894,17 @@ LPWSTR WINAPI StrFormatByteSizeW(LONGLONG llBytes, LPWSTR lpszDest, UINT cchMax)
   double dBytes;
   UINT i = 0;
 
-  TRACE("(0x%s,%p,%d)\n", wine_dbgstr_longlong(llBytes), lpszDest, cchMax);
+  TRACE("(0x%s,%d,%p,%d)\n", wine_dbgstr_longlong(llBytes), flags, lpszDest, cchMax);
 
-  if (!lpszDest || !cchMax)
-    return lpszDest;
+  if (!cchMax)
+    return E_INVALIDARG;
 
   if (llBytes < 1024)  /* 1K */
   {
     WCHAR wszBytesFormat[64];
     LoadStringW(shlwapi_hInstance, IDS_BYTES_FORMAT, wszBytesFormat, 64);
     swprintf(lpszDest, cchMax, wszBytesFormat, (int)llBytes);
-    return lpszDest;
+    return S_OK;
   }
 
   /* Note that if this loop completes without finding a match, i will be
@@ -903,13 +927,24 @@ LPWSTR WINAPI StrFormatByteSizeW(LONGLONG llBytes, LPWSTR lpszDest, UINT cchMax)
   else
     dBytes = (double)llBytes + 0.00001;
 
-  dBytes = floor(dBytes / bfFormats[i].dDivisor) / bfFormats[i].dNormaliser;
+  switch(flags)
+  {
+  case SFBS_FLAGS_ROUND_TO_NEAREST_DISPLAYED_DIGIT:
+      dBytes = round(dBytes / bfFormats[i].dDivisor) / bfFormats[i].dNormaliser;
+      break;
+  case SFBS_FLAGS_TRUNCATE_UNDISPLAYED_DECIMAL_DIGITS:
+      dBytes = floor(dBytes / bfFormats[i].dDivisor) / bfFormats[i].dNormaliser;
+      break;
+  default:
+      return E_INVALIDARG;
+  }
 
   if (!FormatDouble(dBytes, bfFormats[i].nDecimals, lpszDest, cchMax))
-    return NULL;
+    return E_FAIL;
+
   wszAdd[1] = bfFormats[i].wPrefix;
   StrCatBuffW(lpszDest, wszAdd, cchMax);
-  return lpszDest;
+  return S_OK;
 }
 
 /*************************************************************************

dlls/shlwapi/tests/string.c

@@ -52,6 +52,7 @@ static DWORD   (WINAPI *pStrCatChainW)(LPWSTR,DWORD,DWORD,LPCWSTR);
 static LPSTR   (WINAPI *pStrCpyNXA)(LPSTR,LPCSTR,int);
 static LPWSTR  (WINAPI *pStrCpyNXW)(LPWSTR,LPCWSTR,int);
 static LPSTR   (WINAPI *pStrFormatByteSize64A)(LONGLONG,LPSTR,UINT);
+static HRESULT (WINAPI *pStrFormatByteSizeEx)(LONGLONG,SFBS_FLAGS,LPWSTR,UINT);
 static LPSTR   (WINAPI *pStrFormatKBSizeA)(LONGLONG,LPSTR,UINT);
 static LPWSTR  (WINAPI *pStrFormatKBSizeW)(LONGLONG,LPWSTR,UINT);
 static BOOL    (WINAPI *pStrIsIntlEqualA)(BOOL,LPCSTR,LPCSTR,int);
@@ -715,6 +716,38 @@ static void test_StrFormatByteSize64A(void)
   }
 }
 
+static void test_StrFormatByteSizeEx(void)
+{
+  WCHAR szBuff[256];
+  HRESULT hr;
+  LONGLONG test_value = 2147483647;
+
+  if (!pStrFormatByteSizeEx)
+  {
+    win_skip("StrFormatByteSizeEx is not available \n");
+    return;
+  }
+
+  hr = pStrFormatByteSizeEx(0xdeadbeef,
+                            SFBS_FLAGS_TRUNCATE_UNDISPLAYED_DECIMAL_DIGITS, szBuff, 0);
+  ok(hr == E_INVALIDARG, "Unexpected hr: %#lx expected: %#lx\n", hr, E_INVALIDARG);
+
+  hr = pStrFormatByteSizeEx(0xdeadbeef, 10, szBuff, 256);
+  ok(hr == E_INVALIDARG, "Unexpected hr: %#lx expected: %#lx\n", hr, E_INVALIDARG);
+
+  hr = pStrFormatByteSizeEx(test_value, SFBS_FLAGS_ROUND_TO_NEAREST_DISPLAYED_DIGIT,
+                            szBuff, 256);
+  ok(hr == S_OK, "Invalid arguments \n");
+  ok(!wcscmp(szBuff, L"2.00 GB"), "Formatted %s wrong: got %ls, expected 2.00 GB\n",
+     wine_dbgstr_longlong(test_value), szBuff);
+
+  hr = pStrFormatByteSizeEx(test_value, SFBS_FLAGS_TRUNCATE_UNDISPLAYED_DECIMAL_DIGITS,
+                            szBuff, 256);
+  ok(hr == S_OK, "Invalid arguments \n");
+  ok(!wcscmp(szBuff, L"1.99 GB"), "Formatted %s wrong: got %ls, expected 1.99 GB\n",
+     wine_dbgstr_longlong(test_value), szBuff);
+}
+
 static void test_StrFormatKBSizeW(void)
 {
   WCHAR szBuffW[256];
@@ -1680,6 +1713,7 @@ START_TEST(string)
   pStrCpyNXW = (void *)GetProcAddress(hShlwapi, (LPSTR)400);
   pStrChrNW = (void *)GetProcAddress(hShlwapi, "StrChrNW");
   pStrFormatByteSize64A = (void *)GetProcAddress(hShlwapi, "StrFormatByteSize64A");
+  pStrFormatByteSizeEx = (void *)GetProcAddress(hShlwapi, "StrFormatByteSizeEx");
   pStrFormatKBSizeA = (void *)GetProcAddress(hShlwapi, "StrFormatKBSizeA");
   pStrFormatKBSizeW = (void *)GetProcAddress(hShlwapi, "StrFormatKBSizeW");
   pStrIsIntlEqualA = (void *)GetProcAddress(hShlwapi, "StrIsIntlEqualA");
@@ -1716,6 +1750,7 @@ START_TEST(string)
   if (is_lang_english() && is_locale_english())
   {
     test_StrFormatByteSize64A();
+    test_StrFormatByteSizeEx();
     test_StrFormatKBSizeA();
     test_StrFormatKBSizeW();
   }

include/shlwapi.h

@@ -856,6 +856,13 @@ WINSHLWAPI HRESULT WINAPI SHStrDupW(LPCWSTR,WCHAR**);
 
 WINSHLWAPI LPSTR WINAPI StrFormatByteSizeA (DWORD,LPSTR,UINT);
 
+typedef enum {
+    SFBS_FLAGS_ROUND_TO_NEAREST_DISPLAYED_DIGIT = 0x1,
+    SFBS_FLAGS_TRUNCATE_UNDISPLAYED_DECIMAL_DIGITS = 0x2,
+} SFBS_FLAGS;
+
+WINSHLWAPI HRESULT WINAPI StrFormatByteSizeEx(LONGLONG,SFBS_FLAGS,LPWSTR,UINT);
+
 /* A/W Pairing is broken for this function */
 WINSHLWAPI LPSTR WINAPI StrFormatByteSize64A (LONGLONG,LPSTR,UINT);
 WINSHLWAPI LPWSTR WINAPI StrFormatByteSizeW (LONGLONG,LPWSTR,UINT);