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qpdf/libqpdf/Pl_QPDFTokenizer.cc
Jay Berkenbilt cb769c62e5 WHITESPACE ONLY -- expand tabs in source code
This comment expands all tabs using an 8-character tab-width. You
should ignore this commit when using git blame or use git blame -w.

In the early days, I used to use tabs where possible for indentation,
since emacs did this automatically. In recent years, I have switched
to only using spaces, which means qpdf source code has been a mixture
of spaces and tabs. I have avoided cleaning this up because of not
wanting gratuitous whitespaces change to cloud the output of git
blame, but I changed my mind after discussing with users who view qpdf
source code in editors/IDEs that have other tab widths by default and
in light of the fact that I am planning to start applying automatic
code formatting soon.
2022-02-08 11:51:15 -05:00

82 lines
2.1 KiB
C++

#include <qpdf/Pl_QPDFTokenizer.hh>
#include <qpdf/QTC.hh>
#include <qpdf/QUtil.hh>
#include <qpdf/BufferInputSource.hh>
#include <stdexcept>
#include <string.h>
Pl_QPDFTokenizer::Members::Members() :
filter(0),
buf("tokenizer buffer")
{
}
Pl_QPDFTokenizer::Members::~Members()
{
}
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()
{
}
void
Pl_QPDFTokenizer::write(unsigned char* data, size_t len)
{
this->m->buf.write(data, len);
}
void
Pl_QPDFTokenizer::finish()
{
this->m->buf.finish();
auto input = PointerHolder<InputSource>(
new BufferInputSource("tokenizer data",
this->m->buf.getBuffer(), true));
while (true)
{
QPDFTokenizer::Token token = this->m->tokenizer.readToken(
input, "offset " + QUtil::int_to_string(input->tell()),
true);
this->m->filter->handleToken(token);
if (token.getType() == QPDFTokenizer::tt_eof)
{
break;
}
else if ((token.getType() == QPDFTokenizer::tt_word) &&
(token.getValue() == "ID"))
{
// Read the space after the ID.
char ch = ' ';
input->read(&ch, 1);
this->m->filter->handleToken(
QPDFTokenizer::Token(
QPDFTokenizer::tt_space, std::string(1, ch)));
QTC::TC("qpdf", "Pl_QPDFTokenizer found ID");
this->m->tokenizer.expectInlineImage(input);
}
}
this->m->filter->handleEOF();
QPDFObjectHandle::TokenFilter::PipelineAccessor::setPipeline(
m->filter, 0);
Pipeline* next = this->getNext(true);
if (next)
{
next->finish();
}
}