ppdc/ppdc-file.cxx

   1 //
   2 // "$Id$"
   3 //
   4 //   File class for the CUPS PPD Compiler.
   5 //
   6 //   Copyright 2007 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.h"
  28
  29
  30 //
  31 // 'ppdcFile::ppdcFile()' - Create (open) a file.
  32 //
  33
  34 ppdcFile::ppdcFile(const char *f)               // I - File to open
  35 {
  36   fp       = cupsFileOpen(f, "r");
  37   filename = f;
  38   line     = 1;
  39
  40   if (!fp)
  41     fprintf(stderr, "ppdc: Unable to open %s: %s\n", f, strerror(errno));
  42 }
  43
  44
  45 //
  46 // 'ppdcFile::~ppdcFile()' - Delete (close) a file.
  47 //
  48
  49 ppdcFile::~ppdcFile()
  50 {
  51   if (fp)
  52     cupsFileClose(fp);
  53 }
  54
  55
  56 //
  57 // 'ppdcFile::get()' - Get a character from a file.
  58 //
  59
  60 int
  61 ppdcFile::get()
  62 {
  63   int   ch;                                     // Character from file
  64
  65
  66   // Return EOF if there is no open file...
  67   if (!fp)
  68     return (EOF);
  69
  70   // Get the character...
  71   ch = cupsFileGetChar(fp);
  72
  73   // Update the line number as needed...
  74   if (ch == '\n')
  75     line ++;
  76
  77   // Return the character...
  78   return (ch);
  79 }
  80
  81
  82 //
  83 // 'ppdcFile::peek()' - Look at the next character from a file.
  84 //
  85
  86 int                                     // O - Next character in file
  87 ppdcFile::peek()
  88 {
  89   // Return immediaely if there is no open file...
  90   if (!fp)
  91     return (EOF);
  92
  93   // Otherwise return the next character without advancing...
  94   return (cupsFilePeekChar(fp));
  95 }
  96
  97
  98 //
  99 // End of "$Id$".
 100 //