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combase: Add padding and string reference pointer to hstring_header.
Signed-off-by: Bernhard Kölbl <besentv@gmail.com> Signed-off-by: Huw Davies <huw@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
parent
f7609ac2e6
commit
369e4e3609
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@ -32,6 +32,9 @@ struct hstring_header
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{
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UINT32 flags;
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UINT32 length;
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UINT32 padding1;
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UINT32 padding2;
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const WCHAR *str;
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};
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struct hstring_private
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@ -70,6 +73,7 @@ static BOOL alloc_string(UINT32 len, HSTRING *out)
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priv->header.flags = 0;
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priv->buffer = (LPWSTR)(priv + 1);
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priv->header.length = len;
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priv->header.str = priv->buffer;
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priv->refcount = 1;
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priv->buffer[len] = '\0';
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@ -125,7 +129,7 @@ HRESULT WINAPI WindowsCreateStringReference(LPCWSTR ptr, UINT32 len,
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if (ptr == NULL)
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return E_POINTER;
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priv->buffer = (LPWSTR)ptr;
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priv->header.str = ptr;
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priv->header.length = len;
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priv->header.flags = HSTRING_REFERENCE_FLAG;
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@ -168,7 +172,7 @@ HRESULT WINAPI WindowsDuplicateString(HSTRING str, HSTRING *out)
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return S_OK;
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}
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if (priv->header.flags & HSTRING_REFERENCE_FLAG)
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return WindowsCreateString(priv->buffer, priv->header.length, out);
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return WindowsCreateString(priv->header.str, priv->header.length, out);
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InterlockedIncrement(&priv->refcount);
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*out = str;
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return S_OK;
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@ -270,7 +274,7 @@ LPCWSTR WINAPI WindowsGetStringRawBuffer(HSTRING str, UINT32 *len)
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}
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if (len)
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*len = priv->header.length;
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return priv->buffer;
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return priv->header.str;
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}
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/***********************************************************************
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@ -292,7 +296,7 @@ HRESULT WINAPI WindowsStringHasEmbeddedNull(HSTRING str, BOOL *out)
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}
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for (i = 0; i < priv->header.length; i++)
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{
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if (priv->buffer[i] == '\0')
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if (priv->header.str[i] == '\0')
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{
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*out = TRUE;
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return S_OK;
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@ -321,7 +325,7 @@ HRESULT WINAPI WindowsSubstring(HSTRING str, UINT32 start, HSTRING *out)
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*out = NULL;
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return S_OK;
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}
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return WindowsCreateString(&priv->buffer[start], len - start, out);
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return WindowsCreateString(&priv->header.str[start], len - start, out);
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}
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/***********************************************************************
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@ -343,7 +347,7 @@ HRESULT WINAPI WindowsSubstringWithSpecifiedLength(HSTRING str, UINT32 start, UI
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*out = NULL;
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return S_OK;
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}
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return WindowsCreateString(&priv->buffer[start], len, out);
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return WindowsCreateString(&priv->header.str[start], len, out);
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}
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/***********************************************************************
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@ -371,8 +375,8 @@ HRESULT WINAPI WindowsConcatString(HSTRING str1, HSTRING str2, HSTRING *out)
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if (!alloc_string(priv1->header.length + priv2->header.length, out))
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return E_OUTOFMEMORY;
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priv = impl_from_HSTRING(*out);
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memcpy(priv->buffer, priv1->buffer, priv1->header.length * sizeof(*priv1->buffer));
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memcpy(priv->buffer + priv1->header.length, priv2->buffer, priv2->header.length * sizeof(*priv2->buffer));
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memcpy(priv->buffer, priv1->header.str, priv1->header.length * sizeof(*priv1->buffer));
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memcpy(priv->buffer + priv1->header.length, priv2->header.str, priv2->header.length * sizeof(*priv2->buffer));
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return S_OK;
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}
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@ -411,12 +415,12 @@ HRESULT WINAPI WindowsCompareStringOrdinal(HSTRING str1, HSTRING str2, INT32 *re
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}
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if (str1)
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{
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buf1 = priv1->buffer;
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buf1 = priv1->header.str;
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len1 = priv1->header.length;
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}
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if (str2)
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{
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buf2 = priv2->buffer;
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buf2 = priv2->header.str;
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len2 = priv2->header.length;
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}
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*res = CompareStringOrdinal(buf1, len1, buf2, len2, FALSE) - CSTR_EQUAL;
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@ -443,10 +447,10 @@ HRESULT WINAPI WindowsTrimStringStart(HSTRING str1, HSTRING str2, HSTRING *out)
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}
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for (start = 0; start < priv1->header.length; start++)
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{
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if (!wmemchr(priv2->buffer, priv1->buffer[start], priv2->header.length))
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if (!wmemchr(priv2->header.str, priv1->header.str[start], priv2->header.length))
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break;
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}
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return start ? WindowsCreateString(&priv1->buffer[start], priv1->header.length - start, out) :
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return start ? WindowsCreateString(&priv1->header.str[start], priv1->header.length - start, out) :
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WindowsDuplicateString(str1, out);
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}
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@ -470,9 +474,9 @@ HRESULT WINAPI WindowsTrimStringEnd(HSTRING str1, HSTRING str2, HSTRING *out)
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}
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for (len = priv1->header.length; len > 0; len--)
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{
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if (!wmemchr(priv2->buffer, priv1->buffer[len - 1], priv2->header.length))
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if (!wmemchr(priv2->header.str, priv1->header.str[len - 1], priv2->header.length))
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break;
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}
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return (len < priv1->header.length) ? WindowsCreateString(priv1->buffer, len, out) :
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return (len < priv1->header.length) ? WindowsCreateString(priv1->header.str, len, out) :
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WindowsDuplicateString(str1, out);
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}
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@ -548,7 +548,6 @@ static void test_hstring_struct(void)
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ok(prv == prv2, "Pointers not identical.\n");
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ok(prv2->header.flags == 1, "Expected HSTRING_REFERENCE_FLAG to be set, got %#x.\n", prv2->header.flags);
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ok(prv2->header.length == 6, "Expected 6 in length field, got %u.\n", prv2->header.length);
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todo_wine
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ok(prv2->header.str == input_string, "Expected str to point at input_string, instead pointing at %p.\n", prv2->header.str);
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ok(WindowsDeleteString(str) == S_OK, "Failed to delete string ref.\n");
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