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File (3)
  • >> File (3) ( Solaris man: Библиотечные вызовы )
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    NAME

         IO::File - supply object methods for filehandles
    
    
    

    SYNOPSIS

             use IO::File;
    
             $fh = new IO::File;
             if ($fh->open("< file")) {
                 print <$fh>;
                 $fh->close;
             }
    
             $fh = new IO::File "> file";
             if (defined $fh) {
                 print $fh "bar\n";
                 $fh->close;
             }
    
             $fh = new IO::File "file", "r";
             if (defined $fh) {
                 print <$fh>;
                 undef $fh;       # automatically closes the file
             }
    
             $fh = new IO::File "file", O_WRONLY|O_APPEND;
             if (defined $fh) {
                 print $fh "corge\n";
    
                 $pos = $fh->getpos;
                 $fh->setpos($pos);
    
                 undef $fh;       # automatically closes the file
             }
    
             autoflush STDOUT 1;
    
    
    
    

    DESCRIPTION

         IO::File inherits from IO::Handle and IO::Seekable. It
         extends these classes with methods that are specific to file
         handles.
    
    
    

    CONSTRUCTOR

         new ([ ARGS ] )
             Creates a IO::File.  If it receives any parameters, they
             are passed to the method open; if the open fails, the
             object is destroyed.  Otherwise, it is returned to the
             caller.
    
         new_tmpfile
             Creates an IO::File opened for read/write on a newly
             created temporary file.  On systems where this is
             possible, the temporary file is anonymous (i.e. it is
             unlinked after creation, but held open).  If the
             temporary file cannot be created or opened, the IO::File
             object is destroyed.  Otherwise, it is returned to the
             caller.
    
    
    

    METHODS

         open( FILENAME [,MODE [,PERMS]] )
             open accepts one, two or three parameters.  With one
             parameter, it is just a front end for the built-in open
             function.  With two parameters, the first parameter is a
             filename that may include whitespace or other special
             characters, and the second parameter is the open mode,
             optionally followed by a file permission value.
    
             If IO::File::open receives a Perl mode string (">",
             "+<", etc.)  or a POSIX fopen() mode string ("w", "r+",
             etc.), it uses the basic Perl open operator.
    
             If IO::File::open is given a numeric mode, it passes
             that mode and the optional permissions value to the Perl
             sysopen operator.  For convenience, IO::File::import
             tries to import the O_XXX constants from the Fcntl
             module.  If dynamic loading is not available, this may
             fail, but the rest of IO::File will still work.
    
    
    

    SEE ALSO

         the perlfunc manpage, the section on I/O Operators in the
         perlop manpage, the IO::Handle manpage the IO::Seekable
         manpage
    
    
    

    HISTORY

         Derived from FileHandle.pm by Graham Barr
         <bodg@tiuk.ti.com>.
    
    
    
    


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