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mirror of https://github.com/qpdf/qpdf.git synced 2024-12-22 19:08:59 +00:00
qpdf/libqpdf/Pl_QPDFTokenizer.cc
m-holger c916dcf973 Add new protected inline method Pipeline::next
Also, tidy pipeline constructors and make subclasses final where possible.
2024-10-06 15:10:13 +01:00

62 lines
1.7 KiB
C++

#include <qpdf/Pl_QPDFTokenizer.hh>
#include <qpdf/BufferInputSource.hh>
#include <qpdf/QTC.hh>
#include <stdexcept>
Pl_QPDFTokenizer::Members::Members() :
buf("tokenizer buffer")
{
}
Pl_QPDFTokenizer::Pl_QPDFTokenizer(
char const* identifier, QPDFObjectHandle::TokenFilter* filter, Pipeline* next) :
Pipeline(identifier, next),
m(new Members)
{
m->filter = filter;
QPDFObjectHandle::TokenFilter::PipelineAccessor::setPipeline(m->filter, next);
m->tokenizer.allowEOF();
m->tokenizer.includeIgnorable();
}
Pl_QPDFTokenizer::~Pl_QPDFTokenizer() // NOLINT (modernize-use-equals-default)
{
// Must be explicit and not inline -- see QPDF_DLL_CLASS in README-maintainer
}
void
Pl_QPDFTokenizer::write(unsigned char const* data, size_t len)
{
m->buf.write(data, len);
}
void
Pl_QPDFTokenizer::finish()
{
m->buf.finish();
auto input = BufferInputSource("tokenizer data", m->buf.getBuffer(), true);
std::string empty;
while (true) {
auto token = m->tokenizer.readToken(input, empty, true);
m->filter->handleToken(token);
if (token.getType() == QPDFTokenizer::tt_eof) {
break;
} else if (token.isWord("ID")) {
// Read the space after the ID.
char ch = ' ';
input.read(&ch, 1);
m->filter->handleToken(
// line-break
QPDFTokenizer::Token(QPDFTokenizer::tt_space, std::string(1, ch)));
QTC::TC("qpdf", "Pl_QPDFTokenizer found ID");
m->tokenizer.expectInlineImage(input);
}
}
m->filter->handleEOF();
QPDFObjectHandle::TokenFilter::PipelineAccessor::setPipeline(m->filter, nullptr);
if (next()) {
next()->finish();
}
}