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PL286/external/pdfium/xfa/fxfa/parser/xfa_utils.cpp

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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "xfa/fxfa/parser/xfa_utils.h"
#include "core/fxcrt/fx_ext.h"
#include "xfa/fde/xml/fde_xml_imp.h"
#include "xfa/fxfa/parser/cxfa_document.h"
#include "xfa/fxfa/parser/cxfa_measurement.h"
#include "xfa/fxfa/parser/xfa_basic_data.h"
#include "xfa/fxfa/parser/xfa_localemgr.h"
#include "xfa/fxfa/parser/xfa_localevalue.h"
#include "xfa/fxfa/parser/xfa_object.h"
namespace {
const FX_DOUBLE fraction_scales[] = {0.1,
0.01,
0.001,
0.0001,
0.00001,
0.000001,
0.0000001,
0.00000001,
0.000000001,
0.0000000001,
0.00000000001,
0.000000000001,
0.0000000000001,
0.00000000000001,
0.000000000000001,
0.0000000000000001};
FX_DOUBLE WideStringToDouble(const CFX_WideString& wsStringVal) {
CFX_WideString wsValue = wsStringVal;
wsValue.TrimLeft();
wsValue.TrimRight();
int64_t nIntegral = 0;
uint32_t dwFractional = 0;
int32_t nExponent = 0;
int32_t cc = 0;
bool bNegative = false;
bool bExpSign = false;
const FX_WCHAR* str = wsValue.c_str();
int32_t len = wsValue.GetLength();
if (str[0] == '+') {
cc++;
} else if (str[0] == '-') {
bNegative = true;
cc++;
}
int32_t nIntegralLen = 0;
while (cc < len) {
if (str[cc] == '.' || str[cc] == 'E' || str[cc] == 'e' ||
nIntegralLen > 17) {
break;
}
if (!FXSYS_isDecimalDigit(str[cc])) {
return 0;
}
nIntegral = nIntegral * 10 + str[cc] - '0';
cc++;
nIntegralLen++;
}
nIntegral = bNegative ? -nIntegral : nIntegral;
int32_t scale = 0;
FX_DOUBLE fraction = 0.0;
if (cc < len && str[cc] == '.') {
cc++;
while (cc < len) {
fraction += fraction_scales[scale] * (str[cc] - '0');
scale++;
cc++;
if (cc == len) {
break;
}
if (scale == sizeof(fraction_scales) / sizeof(FX_DOUBLE) ||
str[cc] == 'E' || str[cc] == 'e') {
break;
}
if (!FXSYS_isDecimalDigit(str[cc])) {
return 0;
}
}
dwFractional = (uint32_t)(fraction * 4294967296.0);
}
if (cc < len && (str[cc] == 'E' || str[cc] == 'e')) {
cc++;
if (cc < len) {
if (str[cc] == '+') {
cc++;
} else if (str[cc] == '-') {
bExpSign = true;
cc++;
}
}
while (cc < len) {
if (str[cc] == '.' || !FXSYS_isDecimalDigit(str[cc])) {
return 0;
}
nExponent = nExponent * 10 + str[cc] - '0';
cc++;
}
nExponent = bExpSign ? -nExponent : nExponent;
}
FX_DOUBLE dValue = (dwFractional / 4294967296.0);
dValue = nIntegral + (nIntegral >= 0 ? dValue : -dValue);
if (nExponent != 0) {
dValue *= FXSYS_pow(10, (FX_FLOAT)nExponent);
}
return dValue;
}
} // namespace
CXFA_LocaleValue XFA_GetLocaleValue(CXFA_WidgetData* pWidgetData) {
CXFA_Node* pNodeValue =
pWidgetData->GetNode()->GetChild(0, XFA_Element::Value);
if (!pNodeValue) {
return CXFA_LocaleValue();
}
CXFA_Node* pValueChild = pNodeValue->GetNodeItem(XFA_NODEITEM_FirstChild);
if (!pValueChild) {
return CXFA_LocaleValue();
}
int32_t iVTType = XFA_VT_NULL;
switch (pValueChild->GetElementType()) {
case XFA_Element::Decimal:
iVTType = XFA_VT_DECIMAL;
break;
case XFA_Element::Float:
iVTType = XFA_VT_FLOAT;
break;
case XFA_Element::Date:
iVTType = XFA_VT_DATE;
break;
case XFA_Element::Time:
iVTType = XFA_VT_TIME;
break;
case XFA_Element::DateTime:
iVTType = XFA_VT_DATETIME;
break;
case XFA_Element::Boolean:
iVTType = XFA_VT_BOOLEAN;
break;
case XFA_Element::Integer:
iVTType = XFA_VT_INTEGER;
break;
case XFA_Element::Text:
iVTType = XFA_VT_TEXT;
break;
default:
iVTType = XFA_VT_NULL;
break;
}
return CXFA_LocaleValue(iVTType, pWidgetData->GetRawValue(),
pWidgetData->GetNode()->GetDocument()->GetLocalMgr());
}
void XFA_GetPlainTextFromRichText(CFDE_XMLNode* pXMLNode,
CFX_WideString& wsPlainText) {
if (!pXMLNode) {
return;
}
switch (pXMLNode->GetType()) {
case FDE_XMLNODE_Element: {
CFDE_XMLElement* pXMLElement = static_cast<CFDE_XMLElement*>(pXMLNode);
CFX_WideString wsTag;
pXMLElement->GetLocalTagName(wsTag);
uint32_t uTag = FX_HashCode_GetW(wsTag.AsStringC(), true);
if (uTag == 0x0001f714) {
wsPlainText += L"\n";
} else if (uTag == 0x00000070) {
if (!wsPlainText.IsEmpty()) {
wsPlainText += L"\n";
}
} else if (uTag == 0xa48ac63) {
if (!wsPlainText.IsEmpty() &&
wsPlainText[wsPlainText.GetLength() - 1] != '\n') {
wsPlainText += L"\n";
}
}
} break;
case FDE_XMLNODE_Text: {
CFX_WideString wsContent;
static_cast<CFDE_XMLText*>(pXMLNode)->GetText(wsContent);
wsPlainText += wsContent;
} break;
case FDE_XMLNODE_CharData: {
CFX_WideString wsCharData;
static_cast<CFDE_XMLCharData*>(pXMLNode)->GetCharData(wsCharData);
wsPlainText += wsCharData;
} break;
default:
break;
}
for (CFDE_XMLNode* pChildXML =
pXMLNode->GetNodeItem(CFDE_XMLNode::FirstChild);
pChildXML;
pChildXML = pChildXML->GetNodeItem(CFDE_XMLNode::NextSibling)) {
XFA_GetPlainTextFromRichText(pChildXML, wsPlainText);
}
}
bool XFA_FieldIsMultiListBox(CXFA_Node* pFieldNode) {
bool bRet = false;
if (!pFieldNode)
return bRet;
CXFA_Node* pUIChild = pFieldNode->GetChild(0, XFA_Element::Ui);
if (pUIChild) {
CXFA_Node* pFirstChild = pUIChild->GetNodeItem(XFA_NODEITEM_FirstChild);
if (pFirstChild &&
pFirstChild->GetElementType() == XFA_Element::ChoiceList) {
bRet = pFirstChild->GetEnum(XFA_ATTRIBUTE_Open) ==
XFA_ATTRIBUTEENUM_MultiSelect;
}
}
return bRet;
}
FX_DOUBLE XFA_ByteStringToDouble(const CFX_ByteStringC& szStringVal) {
CFX_WideString wsValue = CFX_WideString::FromUTF8(szStringVal);
return WideStringToDouble(wsValue);
}
int32_t XFA_MapRotation(int32_t nRotation) {
nRotation = nRotation % 360;
nRotation = nRotation < 0 ? nRotation + 360 : nRotation;
return nRotation;
}
const XFA_SCRIPTATTRIBUTEINFO* XFA_GetScriptAttributeByName(
XFA_Element eElement,
const CFX_WideStringC& wsAttributeName) {
if (wsAttributeName.IsEmpty())
return nullptr;
int32_t iElementIndex = static_cast<int32_t>(eElement);
while (iElementIndex != -1) {
const XFA_SCRIPTHIERARCHY* scriptIndex = g_XFAScriptIndex + iElementIndex;
int32_t icount = scriptIndex->wAttributeCount;
if (icount == 0) {
iElementIndex = scriptIndex->wParentIndex;
continue;
}
uint32_t uHash = FX_HashCode_GetW(wsAttributeName, false);
int32_t iStart = scriptIndex->wAttributeStart, iEnd = iStart + icount - 1;
do {
int32_t iMid = (iStart + iEnd) / 2;
const XFA_SCRIPTATTRIBUTEINFO* pInfo = g_SomAttributeData + iMid;
if (uHash == pInfo->uHash)
return pInfo;
if (uHash < pInfo->uHash)
iEnd = iMid - 1;
else
iStart = iMid + 1;
} while (iStart <= iEnd);
iElementIndex = scriptIndex->wParentIndex;
}
return nullptr;
}
const XFA_NOTSUREATTRIBUTE* XFA_GetNotsureAttribute(XFA_Element eElement,
XFA_ATTRIBUTE eAttribute,
XFA_ATTRIBUTETYPE eType) {
int32_t iStart = 0, iEnd = g_iXFANotsureCount - 1;
do {
int32_t iMid = (iStart + iEnd) / 2;
const XFA_NOTSUREATTRIBUTE* pAttr = g_XFANotsureAttributes + iMid;
if (eElement == pAttr->eElement) {
if (pAttr->eAttribute == eAttribute) {
if (eType == XFA_ATTRIBUTETYPE_NOTSURE || eType == pAttr->eType)
return pAttr;
return nullptr;
}
int32_t iBefore = iMid - 1;
if (iBefore >= 0) {
pAttr = g_XFANotsureAttributes + iBefore;
while (eElement == pAttr->eElement) {
if (pAttr->eAttribute == eAttribute) {
if (eType == XFA_ATTRIBUTETYPE_NOTSURE || eType == pAttr->eType)
return pAttr;
return nullptr;
}
iBefore--;
if (iBefore < 0)
break;
pAttr = g_XFANotsureAttributes + iBefore;
}
}
int32_t iAfter = iMid + 1;
if (iAfter <= g_iXFANotsureCount - 1) {
pAttr = g_XFANotsureAttributes + iAfter;
while (eElement == pAttr->eElement) {
if (pAttr->eAttribute == eAttribute) {
if (eType == XFA_ATTRIBUTETYPE_NOTSURE || eType == pAttr->eType)
return pAttr;
return nullptr;
}
iAfter++;
if (iAfter > g_iXFANotsureCount - 1)
break;
pAttr = g_XFANotsureAttributes + iAfter;
}
}
return nullptr;
}
if (eElement < pAttr->eElement)
iEnd = iMid - 1;
else
iStart = iMid + 1;
} while (iStart <= iEnd);
return nullptr;
}
const XFA_PROPERTY* XFA_GetPropertyOfElement(XFA_Element eElement,
XFA_Element eProperty,
uint32_t dwPacket) {
int32_t iCount = 0;
const XFA_PROPERTY* pProperties = XFA_GetElementProperties(eElement, iCount);
if (!pProperties || iCount < 1)
return nullptr;
auto it = std::find_if(pProperties, pProperties + iCount,
[eProperty](const XFA_PROPERTY& prop) {
return prop.eName == eProperty;
});
if (it == pProperties + iCount)
return nullptr;
const XFA_ELEMENTINFO* pInfo = XFA_GetElementByID(eProperty);
ASSERT(pInfo);
if (dwPacket != XFA_XDPPACKET_UNKNOWN && !(dwPacket & pInfo->dwPackets))
return nullptr;
return it;
}
const XFA_PROPERTY* XFA_GetElementProperties(XFA_Element eElement,
int32_t& iCount) {
if (eElement == XFA_Element::Unknown)
return nullptr;
const XFA_ELEMENTHIERARCHY* pElement =
g_XFAElementPropertyIndex + static_cast<int32_t>(eElement);
iCount = pElement->wCount;
return g_XFAElementPropertyData + pElement->wStart;
}
const uint8_t* XFA_GetElementAttributes(XFA_Element eElement, int32_t& iCount) {
if (eElement == XFA_Element::Unknown)
return nullptr;
const XFA_ELEMENTHIERARCHY* pElement =
g_XFAElementAttributeIndex + static_cast<int32_t>(eElement);
iCount = pElement->wCount;
return g_XFAElementAttributeData + pElement->wStart;
}
const XFA_ELEMENTINFO* XFA_GetElementByID(XFA_Element eName) {
return eName != XFA_Element::Unknown
? g_XFAElementData + static_cast<int32_t>(eName)
: nullptr;
}
XFA_Element XFA_GetElementTypeForName(const CFX_WideStringC& wsName) {
if (wsName.IsEmpty())
return XFA_Element::Unknown;
uint32_t uHash = FX_HashCode_GetW(wsName, false);
const XFA_ELEMENTINFO* pEnd = g_XFAElementData + g_iXFAElementCount;
auto pInfo = std::lower_bound(g_XFAElementData, pEnd, uHash,
[](const XFA_ELEMENTINFO& info, uint32_t hash) {
return info.uHash < hash;
});
if (pInfo < pEnd && pInfo->uHash == uHash)
return pInfo->eName;
return XFA_Element::Unknown;
}
CXFA_Measurement XFA_GetAttributeDefaultValue_Measure(XFA_Element eElement,
XFA_ATTRIBUTE eAttribute,
uint32_t dwPacket) {
void* pValue;
if (XFA_GetAttributeDefaultValue(pValue, eElement, eAttribute,
XFA_ATTRIBUTETYPE_Measure, dwPacket)) {
return *(CXFA_Measurement*)pValue;
}
return CXFA_Measurement();
}
bool XFA_GetAttributeDefaultValue(void*& pValue,
XFA_Element eElement,
XFA_ATTRIBUTE eAttribute,
XFA_ATTRIBUTETYPE eType,
uint32_t dwPacket) {
const XFA_ATTRIBUTEINFO* pInfo = XFA_GetAttributeByID(eAttribute);
if (!pInfo)
return false;
if (dwPacket && (dwPacket & pInfo->dwPackets) == 0)
return false;
if (pInfo->eType == eType) {
pValue = pInfo->pDefValue;
return true;
}
if (pInfo->eType == XFA_ATTRIBUTETYPE_NOTSURE) {
const XFA_NOTSUREATTRIBUTE* pAttr =
XFA_GetNotsureAttribute(eElement, eAttribute, eType);
if (pAttr) {
pValue = pAttr->pValue;
return true;
}
}
return false;
}
const XFA_ATTRIBUTEINFO* XFA_GetAttributeByName(const CFX_WideStringC& wsName) {
if (wsName.IsEmpty())
return nullptr;
uint32_t uHash = FX_HashCode_GetW(wsName, false);
int32_t iStart = 0;
int32_t iEnd = g_iXFAAttributeCount - 1;
do {
int32_t iMid = (iStart + iEnd) / 2;
const XFA_ATTRIBUTEINFO* pInfo = g_XFAAttributeData + iMid;
if (uHash == pInfo->uHash)
return pInfo;
if (uHash < pInfo->uHash)
iEnd = iMid - 1;
else
iStart = iMid + 1;
} while (iStart <= iEnd);
return nullptr;
}
const XFA_ATTRIBUTEINFO* XFA_GetAttributeByID(XFA_ATTRIBUTE eName) {
return (eName < g_iXFAAttributeCount) ? (g_XFAAttributeData + eName)
: nullptr;
}
const XFA_ATTRIBUTEENUMINFO* XFA_GetAttributeEnumByName(
const CFX_WideStringC& wsName) {
if (wsName.IsEmpty())
return nullptr;
uint32_t uHash = FX_HashCode_GetW(wsName, false);
int32_t iStart = 0;
int32_t iEnd = g_iXFAEnumCount - 1;
do {
int32_t iMid = (iStart + iEnd) / 2;
const XFA_ATTRIBUTEENUMINFO* pInfo = g_XFAEnumData + iMid;
if (uHash == pInfo->uHash)
return pInfo;
if (uHash < pInfo->uHash)
iEnd = iMid - 1;
else
iStart = iMid + 1;
} while (iStart <= iEnd);
return nullptr;
}
const XFA_PACKETINFO* XFA_GetPacketByIndex(XFA_PACKET ePacket) {
return g_XFAPacketData + ePacket;
}
const XFA_PACKETINFO* XFA_GetPacketByID(uint32_t dwPacket) {
int32_t iStart = 0, iEnd = g_iXFAPacketCount - 1;
do {
int32_t iMid = (iStart + iEnd) / 2;
uint32_t dwFind = (g_XFAPacketData + iMid)->eName;
if (dwPacket == dwFind)
return g_XFAPacketData + iMid;
if (dwPacket < dwFind)
iEnd = iMid - 1;
else
iStart = iMid + 1;
} while (iStart <= iEnd);
return nullptr;
}