[PATCH v4 3/3] msxml3: When saving XML use encoding specified in the processing instruction.
Otherwise when a PI node with not default encoding is assigned to a document then saving an XML leads to document being encoded as UTF-8 while XML declaration has what PI specifies. Signed-off-by: Dmitry Timoshkov <dmitry(a)baikal.ru> --- dlls/msxml3/domdoc.c | 70 ++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 68 insertions(+), 2 deletions(-) diff --git a/dlls/msxml3/domdoc.c b/dlls/msxml3/domdoc.c index c67e570a8ea..45fbd6f43aa 100644 --- a/dlls/msxml3/domdoc.c +++ b/dlls/msxml3/domdoc.c @@ -2563,6 +2563,63 @@ static int XMLCALL domdoc_stream_save_closecallback(void *ctx) return 0; } +static char *xmldoc_encoding(IXMLDOMDocument3 *doc) +{ + HRESULT hr; + IXMLDOMNode *node; + char *encoding = NULL; + + hr = IXMLDOMDocument3_get_firstChild(doc, &node); + if (hr == S_OK) + { + DOMNodeType type; + + hr = IXMLDOMNode_get_nodeType(node, &type); + if (hr == S_OK && type == NODE_PROCESSING_INSTRUCTION) + { + IXMLDOMProcessingInstruction *pi; + IXMLDOMNode *item; + IXMLDOMNamedNodeMap *node_map; + + hr = IXMLDOMNode_QueryInterface(node, &IID_IXMLDOMProcessingInstruction, (void **)&pi); + if (hr == S_OK) + { + hr = IXMLDOMNode_get_attributes(node, &node_map); + if (hr == S_OK) + { + static const WCHAR encodingW[] = {'e','n','c','o','d','i','n','g',0}; + BSTR bstr; + + bstr = SysAllocString(encodingW); + hr = IXMLDOMNamedNodeMap_getNamedItem(node_map, bstr, &item); + SysFreeString(bstr); + if (hr == S_OK) + { + VARIANT var; + + hr = IXMLDOMNode_get_nodeValue(item, &var); + if (hr == S_OK) + { + if (V_VT(&var) == VT_BSTR) + encoding = (char *)xmlchar_from_wchar(V_BSTR(&var)); + + VariantClear(&var); + } + } + + IXMLDOMNamedNodeMap_Release(node_map); + } + + IXMLDOMProcessingInstruction_Release(pi); + } + } + + IXMLDOMNode_Release(node); + } + + return encoding; +} + static HRESULT WINAPI domdoc_save( IXMLDOMDocument3 *iface, VARIANT destination ) @@ -2601,8 +2658,12 @@ static HRESULT WINAPI domdoc_save( ret = IUnknown_QueryInterface(pUnk, &IID_IStream, (void**)&stream); if(ret == S_OK) { + char *encoding = xmldoc_encoding(iface); + + TRACE("using encoding %s\n", encoding ? debugstr_a(encoding) : "default"); ctx = xmlSaveToIO(domdoc_stream_save_writecallback, - domdoc_stream_save_closecallback, stream, NULL, XML_SAVE_NO_DECL); + domdoc_stream_save_closecallback, stream, encoding, XML_SAVE_NO_DECL); + heap_free(encoding); if(!ctx) { @@ -2616,6 +2677,7 @@ static HRESULT WINAPI domdoc_save( case VT_BSTR: case VT_BSTR | VT_BYREF: { + char *encoding; /* save with file path */ HANDLE handle = CreateFileW( (V_VT(&destination) & VT_BYREF)? *V_BSTRREF(&destination) : V_BSTR(&destination), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL ); @@ -2625,8 +2687,12 @@ static HRESULT WINAPI domdoc_save( return E_FAIL; } + encoding = xmldoc_encoding(iface); + TRACE("using encoding %s\n", encoding ? debugstr_a(encoding) : "default"); ctx = xmlSaveToIO(domdoc_save_writecallback, domdoc_save_closecallback, - handle, NULL, XML_SAVE_NO_DECL); + handle, encoding, XML_SAVE_NO_DECL); + heap_free(encoding); + if (!ctx) { CloseHandle(handle); -- 2.31.1
On 5/20/21 9:50 AM, Dmitry Timoshkov wrote:
+static char *xmldoc_encoding(IXMLDOMDocument3 *doc) +{ + HRESULT hr; + IXMLDOMNode *node; + char *encoding = NULL; + + hr = IXMLDOMDocument3_get_firstChild(doc, &node); + if (hr == S_OK) + { + DOMNodeType type; + + hr = IXMLDOMNode_get_nodeType(node, &type); + if (hr == S_OK && type == NODE_PROCESSING_INSTRUCTION) + { + IXMLDOMProcessingInstruction *pi; + IXMLDOMNode *item; + IXMLDOMNamedNodeMap *node_map; + + hr = IXMLDOMNode_QueryInterface(node, &IID_IXMLDOMProcessingInstruction, (void **)&pi); + if (hr == S_OK) + { + hr = IXMLDOMNode_get_attributes(node, &node_map); + if (hr == S_OK) + { + static const WCHAR encodingW[] = {'e','n','c','o','d','i','n','g',0}; + BSTR bstr; + + bstr = SysAllocString(encodingW); + hr = IXMLDOMNamedNodeMap_getNamedItem(node_map, bstr, &item); + SysFreeString(bstr); + if (hr == S_OK) + { + VARIANT var; + + hr = IXMLDOMNode_get_nodeValue(item, &var); + if (hr == S_OK) + { + if (V_VT(&var) == VT_BSTR) + encoding = (char *)xmlchar_from_wchar(V_BSTR(&var)); + + VariantClear(&var); + } + } + + IXMLDOMNamedNodeMap_Release(node_map); + } + + IXMLDOMProcessingInstruction_Release(pi); + } + } + + IXMLDOMNode_Release(node); + } + + return encoding; +} Why all this complexity? Isn't it the same as reading current "encoding" value from artificially linked PI node?
Nikolay Sivov <nsivov(a)codeweavers.com> wrote:
On 5/20/21 9:50 AM, Dmitry Timoshkov wrote:
+static char *xmldoc_encoding(IXMLDOMDocument3 *doc) +{ + HRESULT hr; + IXMLDOMNode *node; + char *encoding = NULL; + + hr = IXMLDOMDocument3_get_firstChild(doc, &node); + if (hr == S_OK) + { + DOMNodeType type; + + hr = IXMLDOMNode_get_nodeType(node, &type); + if (hr == S_OK && type == NODE_PROCESSING_INSTRUCTION) + { + IXMLDOMProcessingInstruction *pi; + IXMLDOMNode *item; + IXMLDOMNamedNodeMap *node_map; + + hr = IXMLDOMNode_QueryInterface(node, &IID_IXMLDOMProcessingInstruction, (void **)&pi); + if (hr == S_OK) + { + hr = IXMLDOMNode_get_attributes(node, &node_map); + if (hr == S_OK) + { + static const WCHAR encodingW[] = {'e','n','c','o','d','i','n','g',0}; + BSTR bstr; + + bstr = SysAllocString(encodingW); + hr = IXMLDOMNamedNodeMap_getNamedItem(node_map, bstr, &item); + SysFreeString(bstr); + if (hr == S_OK) + { + VARIANT var; + + hr = IXMLDOMNode_get_nodeValue(item, &var); + if (hr == S_OK) + { + if (V_VT(&var) == VT_BSTR) + encoding = (char *)xmlchar_from_wchar(V_BSTR(&var)); + + VariantClear(&var); + } + } + + IXMLDOMNamedNodeMap_Release(node_map); + } + + IXMLDOMProcessingInstruction_Release(pi); + } + } + + IXMLDOMNode_Release(node); + } + + return encoding; +} Why all this complexity? Isn't it the same as reading current "encoding" value from artificially linked PI node?
Do you mean checking the first document child node type for XML_PI_NODE and directly calling xmlGetProp("encoding")? Or something else? -- Dmitry.
On 5/27/21 10:56 AM, Dmitry Timoshkov wrote:
Nikolay Sivov <nsivov(a)codeweavers.com> wrote:
On 5/20/21 9:50 AM, Dmitry Timoshkov wrote:
+static char *xmldoc_encoding(IXMLDOMDocument3 *doc) +{ + HRESULT hr; + IXMLDOMNode *node; + char *encoding = NULL; + + hr = IXMLDOMDocument3_get_firstChild(doc, &node); + if (hr == S_OK) + { + DOMNodeType type; + + hr = IXMLDOMNode_get_nodeType(node, &type); + if (hr == S_OK && type == NODE_PROCESSING_INSTRUCTION) + { + IXMLDOMProcessingInstruction *pi; + IXMLDOMNode *item; + IXMLDOMNamedNodeMap *node_map; + + hr = IXMLDOMNode_QueryInterface(node, &IID_IXMLDOMProcessingInstruction, (void **)&pi); + if (hr == S_OK) + { + hr = IXMLDOMNode_get_attributes(node, &node_map); + if (hr == S_OK) + { + static const WCHAR encodingW[] = {'e','n','c','o','d','i','n','g',0}; + BSTR bstr; + + bstr = SysAllocString(encodingW); + hr = IXMLDOMNamedNodeMap_getNamedItem(node_map, bstr, &item); + SysFreeString(bstr); + if (hr == S_OK) + { + VARIANT var; + + hr = IXMLDOMNode_get_nodeValue(item, &var); + if (hr == S_OK) + { + if (V_VT(&var) == VT_BSTR) + encoding = (char *)xmlchar_from_wchar(V_BSTR(&var)); + + VariantClear(&var); + } + } + + IXMLDOMNamedNodeMap_Release(node_map); + } + + IXMLDOMProcessingInstruction_Release(pi); + } + } + + IXMLDOMNode_Release(node); + } + + return encoding; +} Why all this complexity? Isn't it the same as reading current "encoding" value from artificially linked PI node? Do you mean checking the first document child node type for XML_PI_NODE and directly calling xmlGetProp("encoding")? Or something else?
xmlGetProp() won't get you anything for PI node, as I understand. You could read it from content like in parse_xml_decl() from first patch, but only for attribute that matters.
Nikolay Sivov <nsivov(a)codeweavers.com> wrote:
+static char *xmldoc_encoding(IXMLDOMDocument3 *doc) +{ + HRESULT hr; + IXMLDOMNode *node; + char *encoding = NULL; + + hr = IXMLDOMDocument3_get_firstChild(doc, &node); + if (hr == S_OK) + { + DOMNodeType type; + + hr = IXMLDOMNode_get_nodeType(node, &type); + if (hr == S_OK && type == NODE_PROCESSING_INSTRUCTION) + { + IXMLDOMProcessingInstruction *pi; + IXMLDOMNode *item; + IXMLDOMNamedNodeMap *node_map; + + hr = IXMLDOMNode_QueryInterface(node, &IID_IXMLDOMProcessingInstruction, (void **)&pi); + if (hr == S_OK) + { + hr = IXMLDOMNode_get_attributes(node, &node_map); + if (hr == S_OK) + { + static const WCHAR encodingW[] = {'e','n','c','o','d','i','n','g',0}; + BSTR bstr; + + bstr = SysAllocString(encodingW); + hr = IXMLDOMNamedNodeMap_getNamedItem(node_map, bstr, &item); + SysFreeString(bstr); + if (hr == S_OK) + { + VARIANT var; + + hr = IXMLDOMNode_get_nodeValue(item, &var); + if (hr == S_OK) + { + if (V_VT(&var) == VT_BSTR) + encoding = (char *)xmlchar_from_wchar(V_BSTR(&var)); + + VariantClear(&var); + } + } + + IXMLDOMNamedNodeMap_Release(node_map); + } + + IXMLDOMProcessingInstruction_Release(pi); + } + } + + IXMLDOMNode_Release(node); + } + + return encoding; +} Why all this complexity? Isn't it the same as reading current "encoding" value from artificially linked PI node? Do you mean checking the first document child node type for XML_PI_NODE and directly calling xmlGetProp("encoding")? Or something else?
xmlGetProp() won't get you anything for PI node, as I understand. You could read it from content like in parse_xml_decl() from first patch, but only for attribute that matters.
So, you're basically suggesting to add another copy of code for parsing XML declaration? The code above is supposed to avoid that. -- Dmitry.
participants (2)
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Dmitry Timoshkov -
Nikolay Sivov