/usr/include/pegtl/internal/file_opener.hh is in pegtl-dev 1.3.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | // Copyright (c) 2014-2015 Dr. Colin Hirsch and Daniel Frey
// Please see LICENSE for license or visit https://github.com/ColinH/PEGTL/
#ifndef PEGTL_INTERNAL_FILE_OPENER_HH
#define PEGTL_INTERNAL_FILE_OPENER_HH
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "../input_error.hh"
namespace pegtl
{
namespace internal
{
struct file_opener
{
explicit
file_opener( const std::string & filename )
: m_source( filename ),
m_fd( open() )
{ }
~file_opener()
{
::close( m_fd );
}
file_opener( const file_opener & ) = delete;
void operator= ( const file_opener & ) = delete;
std::size_t size() const
{
struct stat st;
errno = 0;
if ( ::fstat( m_fd, & st ) < 0 ) {
PEGTL_THROW_INPUT_ERROR( "unable to fstat() file " << m_source << " descriptor " << m_fd );
}
return std::size_t( st.st_size );
}
const std::string m_source;
const int m_fd;
private:
int open() const
{
errno = 0;
const int fd = ::open( m_source.c_str(), O_RDONLY );
if ( fd >= 0 ) {
return fd;
}
PEGTL_THROW_INPUT_ERROR( "unable to open() file " << m_source << " for reading" );
}
};
} // internal
} // pegtl
#endif
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