TEST(SimpleParserTest, GetWord) {
static const pdfium::StrFuncTestData test_data[] = {
// Empty src string.
STR_IN_OUT_CASE("", ""),
// Content with whitespaces only.
STR_IN_OUT_CASE(" \t \0 \n", ""),
// Content with comments only.
STR_IN_OUT_CASE("%this is a test case\r\n%2nd line", ""),
// Mixed whitespaces and comments.
STR_IN_OUT_CASE(" \t \0%try()%haha\n %another line \aa", ""),
// Name.
STR_IN_OUT_CASE(" /Tester ", "/Tester"),
// String.
STR_IN_OUT_CASE("\t(nice day)!\n ", "(nice day)"),
// String with nested braces.
STR_IN_OUT_CASE("\t(It is a (long) day)!\n ", "(It is a (long) day)"),
// String with escaped chars.
STR_IN_OUT_CASE("\t(It is a \\(long\\) day!)hi\n ",
"(It is a \\(long\\) day!)"),
// Hex string.
STR_IN_OUT_CASE(" \n<4545acdfedertt>abc ", "<4545acdfedertt>"),
STR_IN_OUT_CASE(" \n<4545a<ed>ertt>abc ", "<4545a<ed>"),
// Dictionary.
STR_IN_OUT_CASE("<</oc 234 /color 2 3 R>>", "<<"),
STR_IN_OUT_CASE("\t\t<< /abc>>", "<<"),
// Handling ending delimiters.
STR_IN_OUT_CASE("> little bear", ">"),
STR_IN_OUT_CASE(") another bear", ")"), STR_IN_OUT_CASE(">> end ", ">>"),
// No ending delimiters.
STR_IN_OUT_CASE("(sdfgfgbcv", "(sdfgfgbcv"),
// Regular cases.
STR_IN_OUT_CASE("apple pear", "apple"),
STR_IN_OUT_CASE(" pi=3.1415 ", "pi=3.1415"),
STR_IN_OUT_CASE(" p t x c ", "p"), STR_IN_OUT_CASE(" pt\0xc ", "pt"),
STR_IN_OUT_CASE(" $^&&*\t\0sdff ", "$^&&*"),
STR_IN_OUT_CASE("\n\r+3.5656 -11.0", "+3.5656"),
};
for (size_t i = 0; i < FX_ArraySize(test_data); ++i) {
const pdfium::StrFuncTestData& data = test_data[i];
CPDF_SimpleParser parser(pdfium::make_span(data.input, data.input_size));
ByteStringView word = parser.GetWord();
EXPECT_EQ(data.expected_size, word.GetLength()) << " for case " << i;
if (data.expected_size != word.GetLength())
continue;
EXPECT_EQ(
0, memcmp(data.expected, word.unterminated_c_str(), data.expected_size))
<< " for case " << i;
}
}
v8::Local<v8::String> CFX_V8::NewString(ByteStringView str) {
v8::Isolate* pIsolate = m_pIsolate ? GetIsolate() : v8::Isolate::GetCurrent();
return v8::String::NewFromUtf8(pIsolate, str.unterminated_c_str(),
v8::NewStringType::kNormal, str.GetLength())
.ToLocalChecked();
}
bool CPSOutput::WriteString(ByteStringView str) {
return WriteBlock(str.unterminated_c_str(), str.GetLength());
}
FX_Number::FX_Number(ByteStringView strc)
: m_bInteger(true), m_bSigned(false), m_UnsignedValue(0) {
if (strc.IsEmpty())
return;
if (strc.Contains('.')) {
m_bInteger = false;
m_bSigned = true;
m_FloatValue = StringToFloat(strc);
return;
}
// Note, numbers in PDF are typically of the form 123, -123, etc. But,
// for things like the Permissions on the encryption hash the number is
// actually an unsigned value. We use a uint32_t so we can deal with the
// unsigned and then check for overflow if the user actually signed the value.
// The Permissions flag is listed in Table 3.20 PDF 1.7 spec.
pdfium::base::CheckedNumeric<uint32_t> unsigned_val = 0;
bool bNegative = false;
size_t cc = 0;
if (strc[0] == '+') {
cc++;
m_bSigned = true;
} else if (strc[0] == '-') {
bNegative = true;
m_bSigned = true;
cc++;
}
while (cc < strc.GetLength() && std::isdigit(strc[cc])) {
unsigned_val = unsigned_val * 10 + FXSYS_DecimalCharToInt(strc.CharAt(cc));
if (!unsigned_val.IsValid())
break;
cc++;
}
uint32_t uValue = unsigned_val.ValueOrDefault(0);
if (!m_bSigned) {
m_UnsignedValue = uValue;
return;
}
// We have a sign, so if the value was greater then the signed integer
// limits, then we've overflowed and must reset to the default value.
constexpr uint32_t uLimit =
static_cast<uint32_t>(std::numeric_limits<int>::max());
if (uValue > (bNegative ? uLimit + 1 : uLimit))
uValue = 0;
// Switch back to the int space so we can flip to a negative if we need.
int32_t value = static_cast<int32_t>(uValue);
if (bNegative) {
// |value| is usually positive, except in the corner case of "-2147483648",
// where |uValue| is 2147483648. When it gets casted to an int, |value|
// becomes -2147483648. For this case, avoid undefined behavior, because
// an int32_t cannot represent 2147483648.
static constexpr int kMinInt = std::numeric_limits<int>::min();
m_SignedValue = LIKELY(value != kMinInt) ? -value : kMinInt;
} else {
m_SignedValue = value;
}
}
