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qpdf/libqpdf/InputSource.cc
Jay Berkenbilt 15eaed5c52 Refactor: pull *InputSource out of QPDF
InputSource, FileInputSource, and BufferInputSource are now top-level
classes instead of privately nested inside QPDF.
2012-07-21 09:06:06 -04:00

42 lines
1.2 KiB
C++

#include <qpdf/InputSource.hh>
#include <string.h>
#include <qpdf/PointerHolder.hh>
void
InputSource::setLastOffset(qpdf_offset_t offset)
{
this->last_offset = offset;
}
qpdf_offset_t
InputSource::getLastOffset() const
{
return this->last_offset;
}
std::string
InputSource::readLine(size_t max_line_length)
{
// Return at most max_line_length characters from the next line.
// Lines are terminated by one or more \r or \n characters.
// Consume the trailing newline characters but don't return them.
// After this is called, the file will be positioned after a line
// terminator or at the end of the file, and last_offset will
// point to position the file had when this method was called.
qpdf_offset_t offset = this->tell();
char* buf = new char[max_line_length + 1];
PointerHolder<char> bp(true, buf);
memset(buf, '\0', max_line_length + 1);
this->read(buf, max_line_length);
this->seek(offset, SEEK_SET);
qpdf_offset_t eol = this->findAndSkipNextEOL();
this->last_offset = offset;
size_t line_length = eol - offset;
if (line_length < max_line_length)
{
buf[line_length] = '\0';
}
return std::string(buf);
}