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#include <qpdf/ClosedFileInputSource.hh>
#include <qpdf/FileInputSource.hh>
ClosedFileInputSource::Members::Members(char const* filename) :
filename(filename),
offset(0),
stay_open(false)
{
}
ClosedFileInputSource::Members::~Members()
{
}
ClosedFileInputSource::ClosedFileInputSource(char const* filename) :
m(new Members(filename))
{
}
ClosedFileInputSource::~ClosedFileInputSource()
{
}
void
ClosedFileInputSource::before()
{
if (0 == this->m->fis.get())
{
this->m->fis = make_pointer_holder<FileInputSource>();
this->m->fis->setFilename(this->m->filename.c_str());
this->m->fis->seek(this->m->offset, SEEK_SET);
this->m->fis->setLastOffset(this->last_offset);
}
}
void
ClosedFileInputSource::after()
{
this->last_offset = this->m->fis->getLastOffset();
this->m->offset = this->m->fis->tell();
if (this->m->stay_open)
{
return;
}
this->m->fis = 0;
}
qpdf_offset_t
ClosedFileInputSource::findAndSkipNextEOL()
{
before();
qpdf_offset_t r = this->m->fis->findAndSkipNextEOL();
after();
return r;
}
std::string const&
ClosedFileInputSource::getName() const
{
return this->m->filename;
}
qpdf_offset_t
ClosedFileInputSource::tell()
{
before();
qpdf_offset_t r = this->m->fis->tell();
after();
return r;
}
void
ClosedFileInputSource::seek(qpdf_offset_t offset, int whence)
{
before();
this->m->fis->seek(offset, whence);
after();
}
void
ClosedFileInputSource::rewind()
{
this->m->offset = 0;
if (this->m->fis.get())
{
this->m->fis->rewind();
}
}
size_t
ClosedFileInputSource::read(char* buffer, size_t length)
{
before();
size_t r = this->m->fis->read(buffer, length);
after();
return r;
}
void
ClosedFileInputSource::unreadCh(char ch)
{
before();
this->m->fis->unreadCh(ch);
// Don't call after -- the file has to stay open after this
// operation.
}
void
ClosedFileInputSource::stayOpen(bool val)
{
this->m->stay_open = val;
if ((! val) && this->m->fis.get())
{
after();
}
}
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