cups/file-private.h

   1 /*
   2  * "$Id$"
   3  *
   4  *   Private file definitions for CUPS.
   5  *
   6  *   Since stdio files max out at 256 files on many systems, we have to
   7  *   write similar functions without this limit.  At the same time, using
   8  *   our own file functions allows us to provide transparent support of
   9  *   gzip'd print files, PPD files, etc.
  10  *
  11  *   Copyright 2007-2010 by Apple Inc.
  12  *   Copyright 1997-2007 by Easy Software Products, all rights reserved.
  13  *
  14  *   These coded instructions, statements, and computer programs are the
  15  *   property of Apple Inc. and are protected by Federal copyright
  16  *   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
  17  *   which should have been included with this file.  If this file is
  18  *   file is missing or damaged, see the license at "http://www.cups.org/".
  19  */
  20
  21 #ifndef _CUPS_FILE_PRIVATE_H_
  22 #  define _CUPS_FILE_PRIVATE_H_
  23
  24 /*
  25  * Include necessary headers...
  26  */
  27
  28 #  include "cups-private.h"
  29 #  include <stdio.h>
  30 #  include <stdlib.h>
  31 #  include <stdarg.h>
  32 #  include <fcntl.h>
  33
  34 #  ifdef HAVE_LIBZ
  35 #    include <zlib.h>
  36 #  endif /* HAVE_LIBZ */
  37 #  ifdef WIN32
  38 #    include <io.h>
  39 #    include <sys/locking.h>
  40 #  endif /* WIN32 */
  41
  42
  43 /*
  44  * Some operating systems support large files via open flag O_LARGEFILE...
  45  */
  46
  47 #  ifndef O_LARGEFILE
  48 #    define O_LARGEFILE 0
  49 #  endif /* !O_LARGEFILE */
  50
  51
  52 /*
  53  * Some operating systems don't define O_BINARY, which is used by Microsoft
  54  * and IBM to flag binary files...
  55  */
  56
  57 #  ifndef O_BINARY
  58 #    define O_BINARY 0
  59 #  endif /* !O_BINARY */
  60
  61
  62 /*
  63  * Types and structures...
  64  */
  65
  66 struct _cups_file_s                     /**** CUPS file structure... ****/
  67
  68 {
  69   int           fd;                     /* File descriptor */
  70   char          mode,                   /* Mode ('r' or 'w') */
  71                 compressed,             /* Compression used? */
  72                 is_stdio,               /* stdin/out/err? */
  73                 eof,                    /* End of file? */
  74                 buf[4096],              /* Buffer */
  75                 *ptr,                   /* Pointer into buffer */
  76                 *end;                   /* End of buffer data */
  77   off_t         pos,                    /* Position in file */
  78                 bufpos;                 /* File position for start of buffer */
  79
  80 #ifdef HAVE_LIBZ
  81   z_stream      stream;                 /* (De)compression stream */
  82   Bytef         cbuf[4096];             /* (De)compression buffer */
  83   uLong         crc;                    /* (De)compression CRC */
  84 #endif /* HAVE_LIBZ */
  85
  86   char          *printf_buffer;         /* cupsFilePrintf buffer */
  87   size_t        printf_size;            /* Size of cupsFilePrintf buffer */
  88 };
  89
  90
  91 #endif /* !_CUPS_FILE_PRIVATE_H_ */
  92
  93 /*
  94  * End of "$Id$".
  95  */