nsresult
nsSMILParserUtils::ParseKeySplines(const nsAString& aSpec,
nsTArray<double>& aSplineArray)
{
nsresult rv = NS_OK;
NS_ConvertUTF16toUTF8 spec(aSpec);
nsACString::const_iterator start, end;
spec.BeginReading(start);
spec.EndReading(end);
SkipWsp(start, end);
int i = 0;
while (start != end)
{
double value = GetFloat(start, end, &rv);
if (NS_FAILED(rv))
break;
if (value > 1.0 || value < 0.0) {
rv = NS_ERROR_FAILURE;
break;
}
if (!aSplineArray.AppendElement(value)) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
++i;
SkipWsp(start, end);
if (start == end)
break;
if (i % 4) {
if (*start == ',') {
++start;
}
} else {
if (*start != ';') {
rv = NS_ERROR_FAILURE;
break;
}
++start;
}
SkipWsp(start, end);
}
if (i % 4) {
rv = NS_ERROR_FAILURE; // wrong number of points
}
return rv;
}
nsresult
nsSMILParserUtils::ParseRepeatCount(const nsAString& aSpec,
nsSMILRepeatCount& aResult)
{
nsresult rv = NS_OK;
NS_ConvertUTF16toUTF8 spec(aSpec);
nsACString::const_iterator start, end;
spec.BeginReading(start);
spec.EndReading(end);
SkipWsp(start, end);
if (start != end)
{
if (ConsumeSubstring(start, end, "indefinite")) {
aResult.SetIndefinite();
} else {
double value = GetFloat(start, end, &rv);
if (NS_SUCCEEDED(rv))
{
/* Repeat counts must be > 0 */
if (value <= 0.0) {
rv = NS_ERROR_FAILURE;
} else {
aResult = value;
}
}
}
/* Check for trailing junk */
SkipWsp(start, end);
if (start != end) {
rv = NS_ERROR_FAILURE;
}
} else {
/* Empty spec */
rv = NS_ERROR_FAILURE;
}
if (NS_FAILED(rv)) {
aResult.Unset();
}
return rv;
}
nsresult
nsSMILParserUtils::ParseKeyTimes(const nsAString& aSpec,
nsTArray<double>& aTimeArray)
{
nsresult rv = NS_OK;
NS_ConvertUTF16toUTF8 spec(aSpec);
nsACString::const_iterator start, end;
spec.BeginReading(start);
spec.EndReading(end);
SkipWsp(start, end);
double previousValue = -1.0;
while (start != end) {
double value = GetFloat(start, end, &rv);
if (NS_FAILED(rv))
break;
if (value > 1.0 || value < 0.0 || value < previousValue) {
rv = NS_ERROR_FAILURE;
break;
}
if (!aTimeArray.AppendElement(value)) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
previousValue = value;
SkipWsp(start, end);
if (start == end)
break;
if (*start++ != ';') {
rv = NS_ERROR_FAILURE;
break;
}
SkipWsp(start, end);
}
return rv;
}
nsresult
nsSMILParserUtils::ParseValues(const nsAString& aSpec,
const nsISMILAnimationElement* aSrcElement,
const nsISMILAttr& aAttribute,
nsTArray<nsSMILValue>& aValuesArray)
{
nsresult rv = NS_ERROR_FAILURE;
nsAString::const_iterator start;
nsAString::const_iterator end;
nsAString::const_iterator substr_end;
nsAString::const_iterator next;
aSpec.BeginReading(start);
aSpec.EndReading(end);
while (start != end) {
rv = NS_ERROR_FAILURE;
SkipWsp(start, end);
if (start == end || *start == ';')
break;
substr_end = start;
while (substr_end != end && *substr_end != ';') {
++substr_end;
}
next = substr_end;
if (*substr_end == ';') {
++next;
if (next == end)
break;
}
do --substr_end; while (start != substr_end && NS_IS_SPACE(*substr_end));
++substr_end;
nsSMILValue newValue;
rv = aAttribute.ValueFromString(Substring(start, substr_end),
aSrcElement, newValue);
if (NS_FAILED(rv))
break;
if (!aValuesArray.AppendElement(newValue)) {
rv = NS_ERROR_OUT_OF_MEMORY;
break;
}
rv = NS_OK;
start = next;
}
return rv;
}
int32_t
SVGAnimatedTransformList::SMILAnimatedTransformList::ParseParameterList(
const nsAString& aSpec,
float* aVars,
int32_t aNVars)
{
NS_ConvertUTF16toUTF8 spec(aSpec);
nsACString::const_iterator start, end;
spec.BeginReading(start);
spec.EndReading(end);
SkipWsp(start, end);
int numArgsFound = 0;
while (start != end) {
char const *arg = start.get();
char *argend;
float f = float(PR_strtod(arg, &argend));
if (arg == argend || argend > end.get() || !NS_finite(f))
return -1;
if (numArgsFound < aNVars) {
aVars[numArgsFound] = f;
}
start.advance(argend - arg);
numArgsFound++;
SkipWsp(start, end);
if (*start == ',') {
++start;
SkipWsp(start, end);
}
}
return numArgsFound;
}
nsresult
nsSMILParserUtils::ParseClockValue(const nsAString& aSpec,
nsSMILTimeValue* aResult,
PRUint32 aFlags, // = 0
PRBool* aIsMedia) // = nsnull
{
nsSMILTime offset = 0L;
double component = 0.0;
PRInt8 sign = 0;
PRUint8 colonCount = 0;
PRBool started = PR_FALSE;
PRBool isValid = PR_TRUE;
PRInt32 metricMultiplicand = MSEC_PER_SEC;
PRBool numIsReal = PR_FALSE;
PRBool prevNumCouldBeMin = PR_FALSE;
PRBool numCouldBeMin = PR_FALSE;
PRBool numCouldBeSec = PR_FALSE;
PRBool isIndefinite = PR_FALSE;
if (aIsMedia) {
*aIsMedia = PR_FALSE;
}
NS_ConvertUTF16toUTF8 spec(aSpec);
nsACString::const_iterator start, end;
spec.BeginReading(start);
spec.EndReading(end);
while (start != end) {
if (IsSpace(*start)) {
if (started) {
++start;
break;
}
// else, we haven't started yet, ignore initial whitespace
++start;
} else if ((aFlags & kClockValueAllowSign)
&& (*start == '+' || *start == '-')) {
if (sign != 0) {
// sign has already been set
isValid = PR_FALSE;
break;
}
if (started) {
// sign appears in the middle of the string
isValid = PR_FALSE;
break;
}
sign = (*start == '+') ? 1 : -1;
++start;
// The NS_IS_DIGIT etc. macros are not locale-specific
} else if (NS_IS_DIGIT(*start)) {
prevNumCouldBeMin = numCouldBeMin;
if (!ParseClockComponent(start, end, component, numIsReal, numCouldBeMin,
numCouldBeSec)) {
isValid = PR_FALSE;
break;
}
started = PR_TRUE;
} else if (*start == ':') {
++colonCount;
// Neither minutes nor hours can be reals
if (numIsReal) {
isValid = PR_FALSE;
break;
}
// Clock value can't start with a ':'
if (!started) {
isValid = PR_FALSE;
break;
}
// Can't have more than two colons
if (colonCount > 2) {
isValid = PR_FALSE;
break;
}
// Multiply the offset by 60 and add the last accumulated component
offset = offset * 60 + PRInt64(component);
component = 0.0;
++start;
} else if (NS_IS_ALPHA(*start)) {
if (colonCount > 0) {
isValid = PR_FALSE;
break;
}
if ((aFlags & kClockValueAllowIndefinite)
&& ConsumeSubstring(start, end, "indefinite")) {
// We set a separate flag because we don't know what the state of the
// passed in time value is and we shouldn't change it in the case of a
// bad input string (so we can't initialise it to 0ms for example).
isIndefinite = PR_TRUE;
if (aResult) {
aResult->SetIndefinite();
}
} else if (aIsMedia && ConsumeSubstring(start, end, "media")) {
*aIsMedia = PR_TRUE;
} else if (!ParseMetricMultiplicand(start, end, metricMultiplicand)) {
isValid = PR_FALSE;
break;
}
// Nothing must come after the string except whitespace
break;
} else {
isValid = PR_FALSE;
break;
}
}
if (!started) {
isValid = PR_FALSE;
}
// Process remainder of string (if any) to ensure it is only trailing
// whitespace (embedded whitespace is not allowed)
SkipWsp(start, end);
if (start != end) {
isValid = PR_FALSE;
}
// No more processing required if the value was "indefinite" or "media".
if (isIndefinite || (aIsMedia && *aIsMedia))
return NS_OK;
// If there is more than one colon then the previous component must be a
// correctly formatted minute (i.e. two digits between 00 and 59) and the
// latest component must be a correctly formatted second (i.e. two digits
// before the .)
if (colonCount > 0 && (!prevNumCouldBeMin || !numCouldBeSec)) {
isValid = PR_FALSE;
}
if (isValid) {
// Tack on the last component
if (colonCount > 0) {
offset = offset * 60 * 1000;
component *= 1000;
// rounding
component = (component >= 0) ? component + 0.5 : component - 0.5;
offset += PRInt64(component);
} else {
component *= metricMultiplicand;
// rounding
component = (component >= 0) ? component + 0.5 : component - 0.5;
offset = PRInt64(component);
}
if (aResult) {
nsSMILTime millis = offset;
if (sign == -1) {
millis = -offset;
}
aResult->SetMillis(millis);
}
}
return (isValid) ? NS_OK : NS_ERROR_FAILURE;
}
