bool SVGTransformable::parseTransformAttribute(SVGTransformList& list, const UChar*& currTransform, const UChar* end, TransformParsingMode mode)
{
if (mode == ClearList)
list.clear();
bool delimParsed = false;
while (currTransform < end) {
delimParsed = false;
SVGTransform::SVGTransformType type = SVGTransform::SVG_TRANSFORM_UNKNOWN;
skipOptionalSVGSpaces(currTransform, end);
if (!parseAndSkipType(currTransform, end, type))
return false;
SVGTransform transform;
if (!parseTransformValue(type, currTransform, end, transform))
return false;
list.append(transform);
skipOptionalSVGSpaces(currTransform, end);
if (currTransform < end && *currTransform == ',') {
delimParsed = true;
++currTransform;
}
skipOptionalSVGSpaces(currTransform, end);
}
return !delimParsed;
}
static bool parseKeySplinesInternal(const String& string, Vector<UnitBezier>& result)
{
const CharType* ptr = string.getCharacters<CharType>();
const CharType* end = ptr + string.length();
skipOptionalSVGSpaces(ptr, end);
while (ptr < end) {
float posA = 0;
if (!parseNumber(ptr, end, posA))
return false;
float posB = 0;
if (!parseNumber(ptr, end, posB))
return false;
float posC = 0;
if (!parseNumber(ptr, end, posC))
return false;
float posD = 0;
if (!parseNumber(ptr, end, posD, DisallowWhitespace))
return false;
skipOptionalSVGSpaces(ptr, end);
if (ptr < end && *ptr == ';')
ptr++;
skipOptionalSVGSpaces(ptr, end);
result.append(UnitBezier(posA, posB, posC, posD));
}
return ptr == end;
}
SVGParsingError SVGPointList::parse(const CharType*& ptr, const CharType* end)
{
if (!skipOptionalSVGSpaces(ptr, end))
return SVGParseStatus::NoError;
const CharType* listStart = ptr;
for (;;) {
float x = 0;
float y = 0;
if (!parseNumber(ptr, end, x)
|| !parseNumber(ptr, end, y, DisallowWhitespace))
return SVGParsingError(SVGParseStatus::ExpectedNumber, ptr - listStart);
append(SVGPoint::create(FloatPoint(x, y)));
if (!skipOptionalSVGSpaces(ptr, end))
break;
if (*ptr == ',') {
++ptr;
skipOptionalSVGSpaces(ptr, end);
// ',' requires the list to be continued
continue;
}
}
return SVGParseStatus::NoError;
}
static bool genericParsePointsList(SVGPointList& pointsList, const CharType*& ptr, const CharType* end)
{
skipOptionalSVGSpaces(ptr, end);
bool delimParsed = false;
while (ptr < end) {
delimParsed = false;
float xPos = 0.0f;
if (!parseNumber(ptr, end, xPos))
return false;
float yPos = 0.0f;
if (!parseNumber(ptr, end, yPos, false))
return false;
skipOptionalSVGSpaces(ptr, end);
if (ptr < end && *ptr == ',') {
delimParsed = true;
ptr++;
}
skipOptionalSVGSpaces(ptr, end);
pointsList.append(FloatPoint(xPos, yPos));
}
return ptr == end && !delimParsed;
}
bool SVGPointList::parse(const CharType*& ptr, const CharType* end)
{
clear();
skipOptionalSVGSpaces(ptr, end);
if (ptr >= end)
return true;
for (;;) {
float x = 0.0f;
float y = 0.0f;
bool valid = parseNumber(ptr, end, x) && parseNumber(ptr, end, y, false);
if (!valid) {
return false;
}
append(SVGPoint::create(FloatPoint(x, y)));
skipOptionalSVGSpaces(ptr, end);
if (ptr < end && *ptr == ',') {
++ptr;
skipOptionalSVGSpaces(ptr, end);
// ',' requires the list to be continued
continue;
}
// check end of list
if (ptr >= end)
return true;
}
}
bool pointsListFromSVGData(SVGPointList& pointsList, const String& points)
{
if (points.isEmpty())
return true;
const UChar* cur = points.characters();
const UChar* end = cur + points.length();
skipOptionalSVGSpaces(cur, end);
bool delimParsed = false;
while (cur < end) {
delimParsed = false;
float xPos = 0.0f;
if (!parseNumber(cur, end, xPos))
return false;
float yPos = 0.0f;
if (!parseNumber(cur, end, yPos, false))
return false;
skipOptionalSVGSpaces(cur, end);
if (cur < end && *cur == ',') {
delimParsed = true;
cur++;
}
skipOptionalSVGSpaces(cur, end);
pointsList.append(FloatPoint(xPos, yPos));
}
return cur == end && !delimParsed;
}
void SVGRect::parse(const CharType*& ptr, const CharType* end, ExceptionState& exceptionState)
{
const CharType* start = ptr;
skipOptionalSVGSpaces(ptr, end);
float x = 0.0f;
float y = 0.0f;
float width = 0.0f;
float height = 0.0f;
bool valid = parseNumber(ptr, end, x) && parseNumber(ptr, end, y) && parseNumber(ptr, end, width) && parseNumber(ptr, end, height, DisallowWhitespace);
if (!valid) {
exceptionState.throwDOMException(SyntaxError, "Problem parsing rect \"" + String(start, end - start) + "\"");
setInvalid();
return;
}
skipOptionalSVGSpaces(ptr, end);
if (ptr < end) { // nothing should come after the last, fourth number
exceptionState.throwDOMException(SyntaxError, "Problem parsing rect \"" + String(start, end - start) + "\"");
setInvalid();
return;
}
m_value = FloatRect(x, y, width, height);
m_isValid = true;
}
static void parseKeySplines(const String& parse, Vector<UnitBezier>& result)
{
result.clear();
if (parse.isEmpty())
return;
auto upconvertedCharacters = StringView(parse).upconvertedCharacters();
const UChar* cur = upconvertedCharacters;
const UChar* end = cur + parse.length();
skipOptionalSVGSpaces(cur, end);
bool delimParsed = false;
while (cur < end) {
delimParsed = false;
float posA = 0;
if (!parseNumber(cur, end, posA)) {
result.clear();
return;
}
float posB = 0;
if (!parseNumber(cur, end, posB)) {
result.clear();
return;
}
float posC = 0;
if (!parseNumber(cur, end, posC)) {
result.clear();
return;
}
float posD = 0;
if (!parseNumber(cur, end, posD, false)) {
result.clear();
return;
}
skipOptionalSVGSpaces(cur, end);
if (cur < end && *cur == ';') {
delimParsed = true;
cur++;
}
skipOptionalSVGSpaces(cur, end);
result.append(UnitBezier(posA, posB, posC, posD));
}
if (!(cur == end && !delimParsed))
result.clear();
}
static int parseTransformParamList(const UChar*& ptr, const UChar* end, float* values, int required, int optional)
{
int optionalParams = 0, requiredParams = 0;
if (!skipOptionalSVGSpaces(ptr, end) || *ptr != '(')
return -1;
ptr++;
skipOptionalSVGSpaces(ptr, end);
while (requiredParams < required) {
if (ptr >= end || !parseNumber(ptr, end, values[requiredParams], false))
return -1;
requiredParams++;
if (requiredParams < required)
skipOptionalSVGSpacesOrDelimiter(ptr, end);
}
if (!skipOptionalSVGSpaces(ptr, end))
return -1;
bool delimParsed = skipOptionalSVGSpacesOrDelimiter(ptr, end);
if (ptr >= end)
return -1;
if (*ptr == ')') { // skip optionals
ptr++;
if (delimParsed)
return -1;
} else {
while (optionalParams < optional) {
if (ptr >= end || !parseNumber(ptr, end, values[requiredParams + optionalParams], false))
return -1;
optionalParams++;
if (optionalParams < optional)
skipOptionalSVGSpacesOrDelimiter(ptr, end);
}
if (!skipOptionalSVGSpaces(ptr, end))
return -1;
delimParsed = skipOptionalSVGSpacesOrDelimiter(ptr, end);
if (ptr >= end || *ptr != ')' || delimParsed)
return -1;
ptr++;
}
return requiredParams + optionalParams;
}
bool parseGlyphName(const String& input, HashSet<String>& values)
{
// FIXME: Parsing error detection is missing.
values.clear();
const UChar* ptr = input.characters();
const UChar* end = ptr + input.length();
skipOptionalSVGSpaces(ptr, end);
while (ptr < end) {
// Leading and trailing white space, and white space before and after separators, will be ignored.
const UChar* inputStart = ptr;
while (ptr < end && *ptr != ',')
++ptr;
if (ptr == inputStart)
break;
// walk backwards from the ; to ignore any whitespace
const UChar* inputEnd = ptr - 1;
while (inputStart < inputEnd && isSVGSpace(*inputEnd))
--inputEnd;
values.add(String(inputStart, inputEnd - inputStart + 1));
skipOptionalSVGSpacesOrDelimiter(ptr, end, ',');
}
return true;
}
static Vector<String> genericParseDelimitedString(const CharType*& ptr, const CharType* end, const char seperator)
{
Vector<String> values;
skipOptionalSVGSpaces(ptr, end);
while (ptr < end) {
// Leading and trailing white space, and white space before and after semicolon separators, will be ignored.
const CharType* inputStart = ptr;
while (ptr < end && *ptr != seperator) // careful not to ignore whitespace inside inputs
ptr++;
if (ptr == inputStart)
break;
// walk backwards from the ; to ignore any whitespace
const CharType* inputEnd = ptr - 1;
while (inputStart < inputEnd && isSVGSpace(*inputEnd))
inputEnd--;
values.append(String(inputStart, inputEnd - inputStart + 1));
skipOptionalSVGSpacesOrDelimiter(ptr, end, seperator);
}
return values;
}
Vector<String> parseDelimitedString(const String& input, const char seperator)
{
Vector<String> values;
auto upconvertedCharacters = StringView(input).upconvertedCharacters();
const UChar* ptr = upconvertedCharacters;
const UChar* end = ptr + input.length();
skipOptionalSVGSpaces(ptr, end);
while (ptr < end) {
// Leading and trailing white space, and white space before and after semicolon separators, will be ignored.
const UChar* inputStart = ptr;
while (ptr < end && *ptr != seperator) // careful not to ignore whitespace inside inputs
ptr++;
if (ptr == inputStart)
break;
// walk backwards from the ; to ignore any whitespace
const UChar* inputEnd = ptr - 1;
while (inputStart < inputEnd && isSVGSpace(*inputEnd))
inputEnd--;
values.append(String(inputStart, inputEnd - inputStart + 1));
skipOptionalSVGSpacesOrDelimiter(ptr, end, seperator);
}
return values;
}
static void parseKeySplinesInternal(const String& string, Vector<UnitBezier>& result)
{
const CharType* ptr = string.getCharacters<CharType>();
const CharType* end = ptr + string.length();
skipOptionalSVGSpaces(ptr, end);
bool delimParsed = false;
while (ptr < end) {
delimParsed = false;
float posA = 0;
if (!parseNumber(ptr, end, posA)) {
result.clear();
return;
}
float posB = 0;
if (!parseNumber(ptr, end, posB)) {
result.clear();
return;
}
float posC = 0;
if (!parseNumber(ptr, end, posC)) {
result.clear();
return;
}
float posD = 0;
if (!parseNumber(ptr, end, posD, false)) {
result.clear();
return;
}
skipOptionalSVGSpaces(ptr, end);
if (ptr < end && *ptr == ';') {
delimParsed = true;
ptr++;
}
skipOptionalSVGSpaces(ptr, end);
result.append(UnitBezier(posA, posB, posC, posD));
}
if (!(ptr == end && !delimParsed))
result.clear();
}
static bool genericParseRect(const CharType*& ptr, const CharType* end, FloatRect& rect)
{
skipOptionalSVGSpaces(ptr, end);
float x = 0;
float y = 0;
float width = 0;
float height = 0;
bool valid = parseNumber(ptr, end, x) && parseNumber(ptr, end, y) && parseNumber(ptr, end, width) && parseNumber(ptr, end, height, false);
rect = FloatRect(x, y, width, height);
return valid;
}
bool parseRect(const String& string, FloatRect& rect)
{
const UChar* ptr = string.characters();
const UChar* end = ptr + string.length();
skipOptionalSVGSpaces(ptr, end);
float x = 0;
float y = 0;
float width = 0;
float height = 0;
bool valid = parseNumber(ptr, end, x) && parseNumber(ptr, end, y) && parseNumber(ptr, end, width) && parseNumber(ptr, end, height, false);
rect = FloatRect(x, y, width, height);
return valid;
}
void SVGPoint::parse(const CharType*& ptr, const CharType* end, ExceptionState& exceptionState)
{
const CharType* start = ptr;
skipOptionalSVGSpaces(ptr, end);
float x = 0.0f;
float y = 0.0f;
bool valid = parseNumber(ptr, end, x) && parseNumber(ptr, end, y, DisallowWhitespace);
if (!valid) {
exceptionState.throwDOMException(SyntaxError, "Problem parsing point \"" + String(start, end - start) + "\"");
return;
}
skipOptionalSVGSpaces(ptr, end);
if (ptr < end) { // nothing should come after the last, fourth number
exceptionState.throwDOMException(SyntaxError, "Problem parsing point \"" + String(start, end - start) + "\"");
return;
}
m_value = FloatPoint(x, y);
}
bool SVGTransformList::parseInternal(const CharType*& ptr, const CharType* end)
{
clear();
bool delimParsed = false;
while (ptr < end) {
delimParsed = false;
SVGTransformType transformType = SVG_TRANSFORM_UNKNOWN;
skipOptionalSVGSpaces(ptr, end);
if (!parseAndSkipTransformType(ptr, end, transformType))
return false;
if (!skipOptionalSVGSpaces(ptr, end) || *ptr != '(')
return false;
ptr++;
RefPtr<SVGTransform> transform = parseTransformOfType(transformType, ptr, end);
if (!transform)
return false;
if (!skipOptionalSVGSpaces(ptr, end) || *ptr != ')')
return false;
ptr++;
append(transform.release());
skipOptionalSVGSpaces(ptr, end);
if (ptr < end && *ptr == ',') {
delimParsed = true;
++ptr;
skipOptionalSVGSpaces(ptr, end);
}
}
return !delimParsed;
}
bool SVGFitToViewBox::parseViewBox(Document* doc, const UChar*& c, const UChar* end, FloatRect& viewBox, bool validate)
{
String str(c, end - c);
skipOptionalSVGSpaces(c, end);
float x = 0.0f;
float y = 0.0f;
float width = 0.0f;
float height = 0.0f;
bool valid = parseNumber(c, end, x) && parseNumber(c, end, y) && parseNumber(c, end, width) && parseNumber(c, end, height, false);
if (!validate) {
viewBox = FloatRect(x, y, width, height);
return true;
}
if (!valid) {
doc->accessSVGExtensions().reportWarning("Problem parsing viewBox=\"" + str + "\"");
return false;
}
if (width < 0.0) { // check that width is positive
doc->accessSVGExtensions().reportError("A negative value for ViewBox width is not allowed");
return false;
}
if (height < 0.0) { // check that height is positive
doc->accessSVGExtensions().reportError("A negative value for ViewBox height is not allowed");
return false;
}
skipOptionalSVGSpaces(c, end);
if (c < end) { // nothing should come after the last, fourth number
doc->accessSVGExtensions().reportWarning("Problem parsing viewBox=\"" + str + "\"");
return false;
}
viewBox = FloatRect(x, y, width, height);
return true;
}
SVGParsingError SVGPoint::parse(const CharType*& ptr, const CharType* end) {
float x = 0;
float y = 0;
if (!parseNumber(ptr, end, x) ||
!parseNumber(ptr, end, y, DisallowWhitespace))
return SVGParseStatus::ExpectedNumber;
if (skipOptionalSVGSpaces(ptr, end)) {
// Nothing should come after the second number.
return SVGParseStatus::TrailingGarbage;
}
m_value = FloatPoint(x, y);
return SVGParseStatus::NoError;
}
static bool parsePoint(const String& s, FloatPoint& point)
{
if (s.isEmpty())
return false;
auto upconvertedCharacters = StringView(s).upconvertedCharacters();
const UChar* cur = upconvertedCharacters;
const UChar* end = cur + s.length();
if (!skipOptionalSVGSpaces(cur, end))
return false;
float x = 0;
if (!parseNumber(cur, end, x))
return false;
float y = 0;
if (!parseNumber(cur, end, y))
return false;
point = FloatPoint(x, y);
// disallow anything except spaces at the end
return !skipOptionalSVGSpaces(cur, end);
}
SVGLengthType stringToLengthType(const CharType*& ptr, const CharType* end)
{
if (ptr == end)
return LengthTypeNumber;
SVGLengthType type = LengthTypeUnknown;
const CharType firstChar = *ptr++;
if (firstChar == '%') {
type = LengthTypePercentage;
} else if (isHTMLSpace<CharType>(firstChar)) {
type = LengthTypeNumber;
} else if (ptr < end) {
const CharType secondChar = *ptr++;
if (firstChar == 'p') {
if (secondChar == 'x')
type = LengthTypePX;
if (secondChar == 't')
type = LengthTypePT;
if (secondChar == 'c')
type = LengthTypePC;
} else if (firstChar == 'e') {
if (secondChar == 'm')
type = LengthTypeEMS;
if (secondChar == 'x')
type = LengthTypeEXS;
} else if (firstChar == 'c' && secondChar == 'm') {
type = LengthTypeCM;
} else if (firstChar == 'm' && secondChar == 'm') {
type = LengthTypeMM;
} else if (firstChar == 'i' && secondChar == 'n') {
type = LengthTypeIN;
} else if (isHTMLSpace<CharType>(firstChar) && isHTMLSpace<CharType>(secondChar)) {
type = LengthTypeNumber;
}
}
if (!skipOptionalSVGSpaces(ptr, end))
return type;
return LengthTypeUnknown;
}
bool genericParseNumberOrPercentage(const CharType*& ptr, const CharType* end, float& number)
{
if (genericParseNumber(ptr, end, number, AllowLeadingWhitespace)) {
if (ptr == end)
return true;
bool isPercentage = (*ptr == '%');
if (isPercentage)
ptr++;
skipOptionalSVGSpaces(ptr, end);
if (isPercentage)
number /= 100.f;
return ptr == end;
}
return false;
}
static bool parseGlyphName(const CharType*& ptr, const CharType* end, HashSet<String>& values)
{
skipOptionalSVGSpaces(ptr, end);
while (ptr < end) {
// Leading and trailing white space, and white space before and after separators, will be ignored.
const CharType* inputStart = ptr;
while (ptr < end && *ptr != ',')
++ptr;
if (ptr == inputStart)
break;
// walk backwards from the ; to ignore any whitespace
const CharType* inputEnd = ptr - 1;
while (inputStart < inputEnd && isSVGSpace(*inputEnd))
--inputEnd;
values.add(String(inputStart, inputEnd - inputStart + 1));
skipOptionalSVGSpacesOrDelimiter(ptr, end, ',');
}
return true;
}
bool SVGPreserveAspectRatio::parse(const UChar*& currParam, const UChar* end, bool validate)
{
// FIXME: Rewrite this parser, without gotos!
if (!skipOptionalSVGSpaces(currParam, end))
goto bailOut;
if (*currParam == 'd') {
if (!skipString(currParam, end, "defer"))
goto bailOut;
// FIXME: We just ignore the "defer" here.
if (currParam == end)
return true;
if (!skipOptionalSVGSpaces(currParam, end))
goto bailOut;
}
if (*currParam == 'n') {
if (!skipString(currParam, end, "none"))
goto bailOut;
m_align = SVG_PRESERVEASPECTRATIO_NONE;
skipOptionalSVGSpaces(currParam, end);
} else if (*currParam == 'x') {
if ((end - currParam) < 8)
goto bailOut;
if (currParam[1] != 'M' || currParam[4] != 'Y' || currParam[5] != 'M')
goto bailOut;
if (currParam[2] == 'i') {
if (currParam[3] == 'n') {
if (currParam[6] == 'i') {
if (currParam[7] == 'n')
m_align = SVG_PRESERVEASPECTRATIO_XMINYMIN;
else if (currParam[7] == 'd')
m_align = SVG_PRESERVEASPECTRATIO_XMINYMID;
else
goto bailOut;
} else if (currParam[6] == 'a' && currParam[7] == 'x')
m_align = SVG_PRESERVEASPECTRATIO_XMINYMAX;
else
goto bailOut;
} else if (currParam[3] == 'd') {
if (currParam[6] == 'i') {
if (currParam[7] == 'n')
m_align = SVG_PRESERVEASPECTRATIO_XMIDYMIN;
else if (currParam[7] == 'd')
m_align = SVG_PRESERVEASPECTRATIO_XMIDYMID;
else
goto bailOut;
} else if (currParam[6] == 'a' && currParam[7] == 'x')
m_align = SVG_PRESERVEASPECTRATIO_XMIDYMAX;
else
goto bailOut;
} else
goto bailOut;
} else if (currParam[2] == 'a' && currParam[3] == 'x') {
if (currParam[6] == 'i') {
if (currParam[7] == 'n')
m_align = SVG_PRESERVEASPECTRATIO_XMAXYMIN;
else if (currParam[7] == 'd')
m_align = SVG_PRESERVEASPECTRATIO_XMAXYMID;
else
goto bailOut;
} else if (currParam[6] == 'a' && currParam[7] == 'x')
m_align = SVG_PRESERVEASPECTRATIO_XMAXYMAX;
else
goto bailOut;
} else
goto bailOut;
currParam += 8;
skipOptionalSVGSpaces(currParam, end);
} else
goto bailOut;
if (currParam < end) {
if (*currParam == 'm') {
if (!skipString(currParam, end, "meet"))
goto bailOut;
skipOptionalSVGSpaces(currParam, end);
} else if (*currParam == 's') {
if (!skipString(currParam, end, "slice"))
goto bailOut;
skipOptionalSVGSpaces(currParam, end);
if (m_align != SVG_PRESERVEASPECTRATIO_NONE)
m_meetOrSlice = SVG_MEETORSLICE_SLICE;
}
}
if (end != currParam && validate) {
bailOut:
m_align = SVG_PRESERVEASPECTRATIO_XMIDYMID;
m_meetOrSlice = SVG_MEETORSLICE_MEET;
return false;
}
return true;
}
bool SVGPreserveAspectRatio::parseInternal(const CharType*& ptr, const CharType* end, bool validate)
{
// FIXME: Rewrite this parser, without gotos!
if (!skipOptionalSVGSpaces(ptr, end))
goto bailOut;
if (*ptr == 'd') {
if (!skipString(ptr, end, "defer"))
goto bailOut;
// FIXME: We just ignore the "defer" here.
if (ptr == end)
return true;
if (!skipOptionalSVGSpaces(ptr, end))
goto bailOut;
}
if (*ptr == 'n') {
if (!skipString(ptr, end, "none"))
goto bailOut;
m_align = SVG_PRESERVEASPECTRATIO_NONE;
skipOptionalSVGSpaces(ptr, end);
} else if (*ptr == 'x') {
if ((end - ptr) < 8)
goto bailOut;
if (ptr[1] != 'M' || ptr[4] != 'Y' || ptr[5] != 'M')
goto bailOut;
if (ptr[2] == 'i') {
if (ptr[3] == 'n') {
if (ptr[6] == 'i') {
if (ptr[7] == 'n')
m_align = SVG_PRESERVEASPECTRATIO_XMINYMIN;
else if (ptr[7] == 'd')
m_align = SVG_PRESERVEASPECTRATIO_XMINYMID;
else
goto bailOut;
} else if (ptr[6] == 'a' && ptr[7] == 'x')
m_align = SVG_PRESERVEASPECTRATIO_XMINYMAX;
else
goto bailOut;
} else if (ptr[3] == 'd') {
if (ptr[6] == 'i') {
if (ptr[7] == 'n')
m_align = SVG_PRESERVEASPECTRATIO_XMIDYMIN;
else if (ptr[7] == 'd')
m_align = SVG_PRESERVEASPECTRATIO_XMIDYMID;
else
goto bailOut;
} else if (ptr[6] == 'a' && ptr[7] == 'x')
m_align = SVG_PRESERVEASPECTRATIO_XMIDYMAX;
else
goto bailOut;
} else
goto bailOut;
} else if (ptr[2] == 'a' && ptr[3] == 'x') {
if (ptr[6] == 'i') {
if (ptr[7] == 'n')
m_align = SVG_PRESERVEASPECTRATIO_XMAXYMIN;
else if (ptr[7] == 'd')
m_align = SVG_PRESERVEASPECTRATIO_XMAXYMID;
else
goto bailOut;
} else if (ptr[6] == 'a' && ptr[7] == 'x')
m_align = SVG_PRESERVEASPECTRATIO_XMAXYMAX;
else
goto bailOut;
} else
goto bailOut;
ptr += 8;
skipOptionalSVGSpaces(ptr, end);
} else
goto bailOut;
if (ptr < end) {
if (*ptr == 'm') {
if (!skipString(ptr, end, "meet"))
goto bailOut;
skipOptionalSVGSpaces(ptr, end);
} else if (*ptr == 's') {
if (!skipString(ptr, end, "slice"))
goto bailOut;
skipOptionalSVGSpaces(ptr, end);
if (m_align != SVG_PRESERVEASPECTRATIO_NONE)
m_meetOrSlice = SVG_MEETORSLICE_SLICE;
}
}
if (end != ptr && validate) {
bailOut:
m_align = SVG_PRESERVEASPECTRATIO_XMIDYMID;
m_meetOrSlice = SVG_MEETORSLICE_MEET;
return false;
}
return true;
}
bool SVGPreserveAspectRatio::parseInternal(const UChar*& currParam, const UChar* end, bool validate)
{
SVGPreserveAspectRatioType align = SVG_PRESERVEASPECTRATIO_XMIDYMID;
SVGMeetOrSliceType meetOrSlice = SVG_MEETORSLICE_MEET;
m_align = align;
m_meetOrSlice = meetOrSlice;
if (!skipOptionalSVGSpaces(currParam, end))
return false;
if (*currParam == 'd') {
if (!skipString(currParam, end, "defer")) {
LOG_ERROR("Skipped to parse except for *defer* value.");
return false;
}
// FIXME: We just ignore the "defer" here.
if (currParam == end)
return true;
if (!skipOptionalSVGSpaces(currParam, end))
return false;
}
if (*currParam == 'n') {
if (!skipString(currParam, end, "none")) {
LOG_ERROR("Skipped to parse except for *none* value.");
return false;
}
align = SVG_PRESERVEASPECTRATIO_NONE;
skipOptionalSVGSpaces(currParam, end);
} else if (*currParam == 'x') {
if ((end - currParam) < 8)
return false;
if (currParam[1] != 'M' || currParam[4] != 'Y' || currParam[5] != 'M')
return false;
if (currParam[2] == 'i') {
if (currParam[3] == 'n') {
if (currParam[6] == 'i') {
if (currParam[7] == 'n')
align = SVG_PRESERVEASPECTRATIO_XMINYMIN;
else if (currParam[7] == 'd')
align = SVG_PRESERVEASPECTRATIO_XMINYMID;
else
return false;
} else if (currParam[6] == 'a' && currParam[7] == 'x')
align = SVG_PRESERVEASPECTRATIO_XMINYMAX;
else
return false;
} else if (currParam[3] == 'd') {
if (currParam[6] == 'i') {
if (currParam[7] == 'n')
align = SVG_PRESERVEASPECTRATIO_XMIDYMIN;
else if (currParam[7] == 'd')
align = SVG_PRESERVEASPECTRATIO_XMIDYMID;
else
return false;
} else if (currParam[6] == 'a' && currParam[7] == 'x')
align = SVG_PRESERVEASPECTRATIO_XMIDYMAX;
else
return false;
} else
return false;
} else if (currParam[2] == 'a' && currParam[3] == 'x') {
if (currParam[6] == 'i') {
if (currParam[7] == 'n')
align = SVG_PRESERVEASPECTRATIO_XMAXYMIN;
else if (currParam[7] == 'd')
align = SVG_PRESERVEASPECTRATIO_XMAXYMID;
else
return false;
} else if (currParam[6] == 'a' && currParam[7] == 'x')
align = SVG_PRESERVEASPECTRATIO_XMAXYMAX;
else
return false;
} else
return false;
currParam += 8;
skipOptionalSVGSpaces(currParam, end);
} else
return false;
if (currParam < end) {
if (*currParam == 'm') {
if (!skipString(currParam, end, "meet")) {
LOG_ERROR("Skipped to parse except for *meet* or *slice* value.");
return false;
}
skipOptionalSVGSpaces(currParam, end);
} else if (*currParam == 's') {
if (!skipString(currParam, end, "slice")) {
LOG_ERROR("Skipped to parse except for *meet* or *slice* value.");
return false;
}
skipOptionalSVGSpaces(currParam, end);
if (align != SVG_PRESERVEASPECTRATIO_NONE)
meetOrSlice = SVG_MEETORSLICE_SLICE;
}
}
if (end != currParam && validate)
return false;
m_align = align;
m_meetOrSlice = meetOrSlice;
return true;
}
bool SVGPreserveAspectRatio::parseInternal(const CharType*& ptr, const CharType* end, bool validate)
{
SVGPreserveAspectRatioType align = SVG_PRESERVEASPECTRATIO_XMIDYMID;
SVGMeetOrSliceType meetOrSlice = SVG_MEETORSLICE_MEET;
setAlign(align);
setMeetOrSlice(meetOrSlice);
if (!skipOptionalSVGSpaces(ptr, end))
return false;
if (*ptr == 'd') {
if (!skipString(ptr, end, "defer"))
return false;
// FIXME: We just ignore the "defer" here.
if (ptr == end)
return true;
if (!skipOptionalSVGSpaces(ptr, end))
return false;
}
if (*ptr == 'n') {
if (!skipString(ptr, end, "none"))
return false;
align = SVG_PRESERVEASPECTRATIO_NONE;
skipOptionalSVGSpaces(ptr, end);
} else if (*ptr == 'x') {
if ((end - ptr) < 8)
return false;
if (ptr[1] != 'M' || ptr[4] != 'Y' || ptr[5] != 'M')
return false;
if (ptr[2] == 'i') {
if (ptr[3] == 'n') {
if (ptr[6] == 'i') {
if (ptr[7] == 'n')
align = SVG_PRESERVEASPECTRATIO_XMINYMIN;
else if (ptr[7] == 'd')
align = SVG_PRESERVEASPECTRATIO_XMINYMID;
else
return false;
} else if (ptr[6] == 'a' && ptr[7] == 'x') {
align = SVG_PRESERVEASPECTRATIO_XMINYMAX;
} else {
return false;
}
} else if (ptr[3] == 'd') {
if (ptr[6] == 'i') {
if (ptr[7] == 'n')
align = SVG_PRESERVEASPECTRATIO_XMIDYMIN;
else if (ptr[7] == 'd')
align = SVG_PRESERVEASPECTRATIO_XMIDYMID;
else
return false;
} else if (ptr[6] == 'a' && ptr[7] == 'x') {
align = SVG_PRESERVEASPECTRATIO_XMIDYMAX;
} else {
return false;
}
} else {
return false;
}
} else if (ptr[2] == 'a' && ptr[3] == 'x') {
if (ptr[6] == 'i') {
if (ptr[7] == 'n')
align = SVG_PRESERVEASPECTRATIO_XMAXYMIN;
else if (ptr[7] == 'd')
align = SVG_PRESERVEASPECTRATIO_XMAXYMID;
else
return false;
} else if (ptr[6] == 'a' && ptr[7] == 'x') {
align = SVG_PRESERVEASPECTRATIO_XMAXYMAX;
} else {
return false;
}
} else {
return false;
}
ptr += 8;
skipOptionalSVGSpaces(ptr, end);
} else {
return false;
}
if (ptr < end) {
if (*ptr == 'm') {
if (!skipString(ptr, end, "meet"))
return false;
skipOptionalSVGSpaces(ptr, end);
} else if (*ptr == 's') {
if (!skipString(ptr, end, "slice"))
return false;
skipOptionalSVGSpaces(ptr, end);
if (align != SVG_PRESERVEASPECTRATIO_NONE)
meetOrSlice = SVG_MEETORSLICE_SLICE;
}
}
if (end != ptr && validate)
return false;
setAlign(align);
setMeetOrSlice(meetOrSlice);
return true;
}
SVGPreserveAspectRatio SVGPreserveAspectRatio::parsePreserveAspectRatio(const UChar*& currParam, const UChar* end, bool validate, bool& result)
{
SVGPreserveAspectRatio aspectRatio;
aspectRatio.m_align = SVG_PRESERVEASPECTRATIO_NONE;
aspectRatio.m_meetOrSlice = SVG_MEETORSLICE_MEET;
result = false;
// FIXME: Rewrite this parser, without gotos!
if (!skipOptionalSVGSpaces(currParam, end))
goto bailOut;
if (*currParam == 'd') {
if (!skipString(currParam, end, "defer"))
goto bailOut;
// FIXME: We just ignore the "defer" here.
if (!skipOptionalSVGSpaces(currParam, end))
goto bailOut;
}
if (*currParam == 'n') {
if (!skipString(currParam, end, "none"))
goto bailOut;
skipOptionalSVGSpaces(currParam, end);
} else if (*currParam == 'x') {
if ((end - currParam) < 8)
goto bailOut;
if (currParam[1] != 'M' || currParam[4] != 'Y' || currParam[5] != 'M')
goto bailOut;
if (currParam[2] == 'i') {
if (currParam[3] == 'n') {
if (currParam[6] == 'i') {
if (currParam[7] == 'n')
aspectRatio.m_align = SVG_PRESERVEASPECTRATIO_XMINYMIN;
else if (currParam[7] == 'd')
aspectRatio.m_align = SVG_PRESERVEASPECTRATIO_XMINYMID;
else
goto bailOut;
} else if (currParam[6] == 'a' && currParam[7] == 'x')
aspectRatio.m_align = SVG_PRESERVEASPECTRATIO_XMINYMAX;
else
goto bailOut;
} else if (currParam[3] == 'd') {
if (currParam[6] == 'i') {
if (currParam[7] == 'n')
aspectRatio.m_align = SVG_PRESERVEASPECTRATIO_XMIDYMIN;
else if (currParam[7] == 'd')
aspectRatio.m_align = SVG_PRESERVEASPECTRATIO_XMIDYMID;
else
goto bailOut;
} else if (currParam[6] == 'a' && currParam[7] == 'x')
aspectRatio.m_align = SVG_PRESERVEASPECTRATIO_XMIDYMAX;
else
goto bailOut;
} else
goto bailOut;
} else if (currParam[2] == 'a' && currParam[3] == 'x') {
if (currParam[6] == 'i') {
if (currParam[7] == 'n')
aspectRatio.m_align = SVG_PRESERVEASPECTRATIO_XMAXYMIN;
else if (currParam[7] == 'd')
aspectRatio.m_align = SVG_PRESERVEASPECTRATIO_XMAXYMID;
else
goto bailOut;
} else if (currParam[6] == 'a' && currParam[7] == 'x')
aspectRatio.m_align = SVG_PRESERVEASPECTRATIO_XMAXYMAX;
else
goto bailOut;
} else
goto bailOut;
currParam += 8;
skipOptionalSVGSpaces(currParam, end);
} else
goto bailOut;
if (currParam < end) {
if (*currParam == 'm') {
if (!skipString(currParam, end, "meet"))
goto bailOut;
skipOptionalSVGSpaces(currParam, end);
} else if (*currParam == 's') {
if (!skipString(currParam, end, "slice"))
goto bailOut;
skipOptionalSVGSpaces(currParam, end);
if (aspectRatio.m_align != SVG_PRESERVEASPECTRATIO_NONE)
aspectRatio.m_meetOrSlice = SVG_MEETORSLICE_SLICE;
}
}
if (end != currParam && validate) {
bailOut:
// FIXME: Should the two values be set to UNKNOWN instead?
aspectRatio.m_align = SVG_PRESERVEASPECTRATIO_NONE;
aspectRatio.m_meetOrSlice = SVG_MEETORSLICE_MEET;
} else
result = true;
return aspectRatio;
}
static bool genericParseNumber(const CharType*& cursor, const CharType* end, FloatType& number, WhitespaceMode mode)
{
FloatType integer, decimal, frac, exponent;
int sign, expsign;
exponent = 0;
integer = 0;
frac = 1;
decimal = 0;
sign = 1;
expsign = 1;
if (mode & AllowLeadingWhitespace)
skipOptionalSVGSpaces(cursor, end);
const CharType* ptr = cursor;
// read the sign
if (ptr < end && *ptr == '+')
ptr++;
else if (ptr < end && *ptr == '-') {
ptr++;
sign = -1;
}
if (ptr == end || ((*ptr < '0' || *ptr > '9') && *ptr != '.'))
// The first character of a number must be one of [0-9+-.]
return false;
// read the integer part, build right-to-left
const CharType* digitsStart = ptr;
while (ptr < end && *ptr >= '0' && *ptr <= '9')
++ptr; // Advance to first non-digit.
if (ptr != digitsStart) {
const CharType* ptrScanIntPart = ptr - 1;
FloatType multiplier = 1;
while (ptrScanIntPart >= digitsStart) {
integer += multiplier * static_cast<FloatType>(*(ptrScanIntPart--) - '0');
multiplier *= 10;
}
// Bail out early if this overflows.
if (!isValidRange(integer))
return false;
}
if (ptr < end && *ptr == '.') { // read the decimals
ptr++;
// There must be a least one digit following the .
if (ptr >= end || *ptr < '0' || *ptr > '9')
return false;
while (ptr < end && *ptr >= '0' && *ptr <= '9')
decimal += (*(ptr++) - '0') * (frac *= static_cast<FloatType>(0.1));
}
// When we get here we should have consumed either a digit for the integer
// part or a fractional part (with at least one digit after the '.'.)
ASSERT(digitsStart != ptr);
// read the exponent part
if (ptr + 1 < end && (*ptr == 'e' || *ptr == 'E')
&& (ptr[1] != 'x' && ptr[1] != 'm')) {
ptr++;
// read the sign of the exponent
if (*ptr == '+')
ptr++;
else if (*ptr == '-') {
ptr++;
expsign = -1;
}
// There must be an exponent
if (ptr >= end || *ptr < '0' || *ptr > '9')
return false;
while (ptr < end && *ptr >= '0' && *ptr <= '9') {
exponent *= static_cast<FloatType>(10);
exponent += *ptr - '0';
ptr++;
}
// Make sure exponent is valid.
if (!isValidRange(exponent) || exponent > std::numeric_limits<FloatType>::max_exponent)
return false;
}
number = integer + decimal;
number *= sign;
if (exponent)
number *= static_cast<FloatType>(pow(10.0, expsign * static_cast<int>(exponent)));
// Don't return Infinity() or NaN().
if (!isValidRange(number))
return false;
// A valid number has been parsed. Commit cursor.
cursor = ptr;
if (mode & AllowTrailingWhitespace)
skipOptionalSVGSpacesOrDelimiter(cursor, end);
return true;
}
bool SVGPathStringSource::moveToNextToken()
{
if (m_is8BitSource)
return skipOptionalSVGSpaces(m_current.m_character8, m_end.m_character8);
return skipOptionalSVGSpaces(m_current.m_character16, m_end.m_character16);
}
