ppdc/ppdc-file.cxx

   1 //
   2 // "$Id$"
   3 //
   4 //   File class for the CUPS PPD Compiler.
   5 //
   6 //   Copyright 2007-2010 by Apple Inc.
   7 //   Copyright 2002-2005 by Easy Software Products.
   8 //
   9 //   These coded instructions, statements, and computer programs are the
  10 //   property of Apple Inc. and are protected by Federal copyright
  11 //   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
  12 //   which should have been included with this file.  If this file is
  13 //   file is missing or damaged, see the license at "http://www.cups.org/".
  14 //
  15 // Contents:
  16 //
  17 //   ppdcFile::ppdcFile()  - Create (open) a file.
  18 //   ppdcFile::~ppdcFile() - Delete (close) a file.
  19 //   ppdcFile::get()       - Get a character from a file.
  20 //   ppdcFile::peek()      - Look at the next character from a file.
  21 //
  22
  23 //
  24 // Include necessary headers...
  25 //
  26
  27 #include "ppdc-private.h"
  28
  29
  30 //
  31 // 'ppdcFile::ppdcFile()' - Create (open) a file.
  32 //
  33
  34 ppdcFile::ppdcFile(const char  *f,              // I - File to open
  35                    cups_file_t *ffp)            // I - File pointer to use
  36 {
  37   if (ffp)
  38   {
  39     fp = ffp;
  40     cupsFileRewind(fp);
  41   }
  42   else
  43     fp = cupsFileOpen(f, "r");
  44
  45   filename = f;
  46   line     = 1;
  47
  48   if (!fp)
  49     _cupsLangPrintf(stderr, _("ppdc: Unable to open %s: %s"), f,
  50                     strerror(errno));
  51 }
  52
  53
  54 //
  55 // 'ppdcFile::~ppdcFile()' - Delete (close) a file.
  56 //
  57
  58 ppdcFile::~ppdcFile()
  59 {
  60   if (fp)
  61     cupsFileClose(fp);
  62 }
  63
  64
  65 //
  66 // 'ppdcFile::get()' - Get a character from a file.
  67 //
  68
  69 int
  70 ppdcFile::get()
  71 {
  72   int   ch;                                     // Character from file
  73
  74
  75   // Return EOF if there is no open file...
  76   if (!fp)
  77     return (EOF);
  78
  79   // Get the character...
  80   ch = cupsFileGetChar(fp);
  81
  82   // Update the line number as needed...
  83   if (ch == '\n')
  84     line ++;
  85
  86   // Return the character...
  87   return (ch);
  88 }
  89
  90
  91 //
  92 // 'ppdcFile::peek()' - Look at the next character from a file.
  93 //
  94
  95 int                                     // O - Next character in file
  96 ppdcFile::peek()
  97 {
  98   // Return immediaely if there is no open file...
  99   if (!fp)
 100     return (EOF);
 101
 102   // Otherwise return the next character without advancing...
 103   return (cupsFilePeekChar(fp));
 104 }
 105
 106
 107 //
 108 // End of "$Id$".
 109 //