cups/file-private.h

   1 /*
   2  * "$Id$"
   3  *
   4  *   Private file definitions for the Common UNIX Printing System (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 2007-2009 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 <stdio.h>
  29 #  include <stdlib.h>
  30 #  include <stdarg.h>
  31 #  include <errno.h>
  32 #  include <fcntl.h>
  33 #  include "http-private.h"
  34 #  include "globals.h"
  35 #  include "debug.h"
  36
  37 #  ifdef HAVE_LIBZ
  38 #    include <zlib.h>
  39 #  endif /* HAVE_LIBZ */
  40 #  ifdef WIN32
  41 #    include <io.h>
  42 #    include <sys/locking.h>
  43 #  endif /* WIN32 */
  44
  45
  46 /*
  47  * Some operating systems support large files via open flag O_LARGEFILE...
  48  */
  49
  50 #  ifndef O_LARGEFILE
  51 #    define O_LARGEFILE 0
  52 #  endif /* !O_LARGEFILE */
  53
  54
  55 /*
  56  * Some operating systems don't define O_BINARY, which is used by Microsoft
  57  * and IBM to flag binary files...
  58  */
  59
  60 #  ifndef O_BINARY
  61 #    define O_BINARY 0
  62 #  endif /* !O_BINARY */
  63
  64
  65 /*
  66  * Types and structures...
  67  */
  68
  69 struct _cups_file_s                     /**** CUPS file structure... ****/
  70
  71 {
  72   int           fd;                     /* File descriptor */
  73   char          mode,                   /* Mode ('r' or 'w') */
  74                 compressed,             /* Compression used? */
  75                 is_stdio,               /* stdin/out/err? */
  76                 eof,                    /* End of file? */
  77                 buf[4096],              /* Buffer */
  78                 *ptr,                   /* Pointer into buffer */
  79                 *end;                   /* End of buffer data */
  80   off_t         pos,                    /* Position in file */
  81                 bufpos;                 /* File position for start of buffer */
  82
  83 #ifdef HAVE_LIBZ
  84   z_stream      stream;                 /* (De)compression stream */
  85   Bytef         cbuf[4096];             /* (De)compression buffer */
  86   uLong         crc;                    /* (De)compression CRC */
  87 #endif /* HAVE_LIBZ */
  88
  89   char          *printf_buffer;         /* cupsFilePrintf buffer */
  90   size_t        printf_size;            /* Size of cupsFilePrintf buffer */
  91 };
  92
  93
  94 #endif /* !_CUPS_FILE_PRIVATE_H_ */
  95
  96 /*
  97  * End of "$Id$".
  98  */