int RegularExpression::match(const String& str, int startFrom, int* matchLength) const
{
if (!d->regexp())
return -1;
if (str.isNull())
return -1;
// First 2 offsets are start and end offsets; 3rd entry is used internally by pcre
static const size_t maxOffsets = 3;
int offsets[maxOffsets];
int result = jsRegExpExecute(d->regexp(), str.characters(), str.length(), startFrom, offsets, maxOffsets);
if (result < 0) {
if (result != JSRegExpErrorNoMatch)
LOG_ERROR("RegularExpression: pcre_exec() failed with result %d", result);
d->lastMatchLength = -1;
return -1;
}
// 1 means 1 match; 0 means more than one match. First match is recorded in offsets.
d->lastMatchLength = offsets[1] - offsets[0];
if (matchLength)
*matchLength = d->lastMatchLength;
return offsets[0];
}
int RegularExpression::match(const String& str, int startFrom, int* matchLength) const
{
if (str.isNull())
return -1;
d->lastMatchString = str;
// First 2 offsets are start and end offsets; 3rd entry is used internally by pcre
d->lastMatchCount = jsRegExpExecute(d->regex, d->lastMatchString.characters(),
d->lastMatchString.length(), startFrom, d->lastMatchOffsets, maxOffsets);
if (d->lastMatchCount < 0) {
if (d->lastMatchCount != JSRegExpErrorNoMatch)
LOG_ERROR("RegularExpression: pcre_exec() failed with result %d", d->lastMatchCount);
d->lastMatchPos = -1;
d->lastMatchLength = -1;
d->lastMatchString = String();
return -1;
}
// 1 means 1 match; 0 means more than one match. First match is recorded in offsets.
d->lastMatchPos = d->lastMatchOffsets[0];
d->lastMatchLength = d->lastMatchOffsets[1] - d->lastMatchOffsets[0];
if (matchLength)
*matchLength = d->lastMatchLength;
return d->lastMatchPos;
}
int RegExp::match(const UString& s, int startOffset, Vector<int, 32>* ovector)
{
if (startOffset < 0)
startOffset = 0;
if (ovector)
ovector->clear();
if (startOffset > s.size() || s.isNull())
return -1;
#if ENABLE(WREC)
if (m_wrecFunction) {
int offsetVectorSize = (m_numSubpatterns + 1) * 2;
int* offsetVector;
Vector<int, 32> nonReturnedOvector;
if (ovector) {
ovector->resize(offsetVectorSize);
offsetVector = ovector->data();
} else {
nonReturnedOvector.resize(offsetVectorSize);
offsetVector = nonReturnedOvector.data();
}
ASSERT(offsetVector);
for (int j = 0; j < offsetVectorSize; ++j)
offsetVector[j] = -1;
int result = m_wrecFunction(s.data(), startOffset, s.size(), offsetVector);
if (result < 0) {
#ifndef NDEBUG
// TODO: define up a symbol, rather than magic -1
if (result != -1)
fprintf(stderr, "jsRegExpExecute failed with result %d\n", result);
#endif
if (ovector)
ovector->clear();
}
return result;
} else
#endif
if (m_regExp) {
// Set up the offset vector for the result.
// First 2/3 used for result, the last third used by PCRE.
int* offsetVector;
int offsetVectorSize;
int fixedSizeOffsetVector[3];
if (!ovector) {
offsetVectorSize = 3;
offsetVector = fixedSizeOffsetVector;
} else {
offsetVectorSize = (m_numSubpatterns + 1) * 3;
ovector->resize(offsetVectorSize);
offsetVector = ovector->data();
}
int numMatches = jsRegExpExecute(m_regExp, reinterpret_cast<const UChar*>(s.data()), s.size(), startOffset, offsetVector, offsetVectorSize);
if (numMatches < 0) {
#ifndef NDEBUG
if (numMatches != JSRegExpErrorNoMatch)
fprintf(stderr, "jsRegExpExecute failed with result %d\n", numMatches);
#endif
if (ovector)
ovector->clear();
return -1;
}
return offsetVector[0];
}
return -1;
}
