// Read a null-terminated string
folly::StringPiece readNullTerminated(folly::StringPiece& sp) {
const char* p = static_cast<const char*>(
memchr(sp.data(), 0, sp.size()));
FOLLY_SAFE_CHECK(p, "invalid null-terminated string");
folly::StringPiece ret(sp.data(), p);
sp.assign(p + 1, sp.end());
return ret;
}
TEST(FixedStringConversionTest, ConversionToFollyRange) {
// The following declaraction is static for compilers that haven't implemented
// the resolution of:
// http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#1454
static constexpr folly::FixedString<16> tmp{"This is a string"};
constexpr folly::StringPiece piece = tmp;
static_assert(tmp.begin() == piece.begin(), "");
static_assert(tmp.end() == piece.end(), "");
}
/**
* Matches all the occurences of "pattern" in "text"
*
* @return A vector of pairs containing the index and size (respectively)
* of all ocurrences.
*/
std::vector<std::pair<size_t, size_t>> MessagePrinter::matchAll(
folly::StringPiece text, const boost::regex& pattern) const {
std::vector<std::pair<size_t, size_t>> result;
boost::cregex_token_iterator it(text.begin(), text.end(), pattern);
boost::cregex_token_iterator end;
while (it != end) {
result.emplace_back(it->first - text.begin(), it->length());
++it;
}
return result;
}
bool parseByteRangeSpec(
folly::StringPiece value,
unsigned long& outFirstByte,
unsigned long& outLastByte,
unsigned long& outInstanceLength) {
// We should start with "bytes "
if (!value.startsWith("bytes ")) {
return false;
}
const char* curs = value.begin() + 6 /* strlen("bytes ") */;
const char* end = value.end();
unsigned long firstByte = ULONG_MAX;
unsigned long lastByte = ULONG_MAX;
unsigned long instanceLength = ULONG_MAX;
if (!strtoulWrapper(curs, end, firstByte)) {
if (*curs != '*') {
return false;
}
firstByte = 0;
lastByte = ULONG_MAX;
++curs;
} else {
if (*curs != '-') {
return false;
}
++curs;
if (!strtoulWrapper(curs, end, lastByte)) {
return false;
}
}
if (*curs != '/') {
return false;
}
++curs;
if (*curs != '*') {
if (!strtoulWrapper(curs, end, instanceLength)) {
return false;
}
} else {
++curs;
}
if (curs < end && *curs != '\0') {
return false;
}
if (lastByte < firstByte) {
return false;
}
if ((lastByte - firstByte + 1) > instanceLength) {
return false;
}
outFirstByte = firstByte;
outLastByte = lastByte;
outInstanceLength = instanceLength;
return true;
}