diff options
| -rw-r--r-- | libqpdf/QPDF_String.cc | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/libqpdf/QPDF_String.cc b/libqpdf/QPDF_String.cc index c6cb6c41..b7064f44 100644 --- a/libqpdf/QPDF_String.cc +++ b/libqpdf/QPDF_String.cc @@ -113,7 +113,14 @@ QPDF_String::unparse(bool force_binary) bool use_hexstring = force_binary || useHexString(); std::string result; if (use_hexstring) { - result += "<" + QUtil::hex_encode(this->val) + ">"; + static auto constexpr hexchars = "0123456789abcdef"; + result.reserve(2 * this->val.length() + 2); + result += '<'; + for (const char c: this->val) { + result += hexchars[static_cast<unsigned char>(c) >> 4]; + result += hexchars[c & 0x0f]; + } + result += '>'; } else { result += "("; for (unsigned int i = 0; i < this->val.length(); ++i) { |