ppdc/ppdc-array.cxx

   1 //
   2 // "$Id$"
   3 //
   4 //   Array 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 //   ppdcArray::ppdcArray()  - Create a new array.
  18 //   ppdcArray::~ppdcArray() - Destroy an array.
  19 //   ppdcArray::add()        - Add an element to an array.
  20 //   ppdcArray::first()      - Return the first element in the array.
  21 //   ppdcArray::next()       - Return the next element in the array.
  22 //   ppdcArray::remove()     - Remove an element from the array.
  23 //
  24
  25 //
  26 // Include necessary headers...
  27 //
  28
  29 #include "ppdc.h"
  30
  31
  32 //
  33 // 'ppdcArray::ppdcArray()' - Create a new array.
  34 //
  35
  36 ppdcArray::ppdcArray(ppdcArray *a)
  37 {
  38   if (a)
  39   {
  40     count = a->count;
  41     alloc = count;
  42
  43     if (count)
  44     {
  45       // Make a copy of the array...
  46       data = new ppdcShared *[count];
  47
  48       memcpy(data, a->data, count * sizeof(ppdcShared *));
  49
  50       for (int i = 0; i < count; i ++)
  51         data[i]->get();
  52     }
  53     else
  54       data = 0;
  55   }
  56   else
  57   {
  58     count = 0;
  59     alloc = 0;
  60     data  = 0;
  61   }
  62
  63   current = 0;
  64 }
  65
  66
  67 //
  68 // 'ppdcArray::~ppdcArray()' - Destroy an array.
  69 //
  70
  71 ppdcArray::~ppdcArray()
  72 {
  73   for (int i = 0; i < count; i ++)
  74     data[i]->release();
  75
  76   if (alloc)
  77     delete[] data;
  78 }
  79
  80
  81 //
  82 // 'ppdcArray::add()' - Add an element to an array.
  83 //
  84
  85 void
  86 ppdcArray::add(ppdcShared *d)
  87 {
  88   ppdcShared    **temp;
  89
  90
  91   if (count >= alloc)
  92   {
  93     alloc += 10;
  94     temp  = new ppdcShared *[alloc];
  95
  96     memcpy(temp, data, count * sizeof(ppdcShared *));
  97
  98     delete[] data;
  99     data = temp;
 100   }
 101
 102   data[count++] = d;
 103 }
 104
 105
 106 //
 107 // 'ppdcArray::first()' - Return the first element in the array.
 108 //
 109
 110 ppdcShared *
 111 ppdcArray::first()
 112 {
 113   current = 0;
 114
 115   if (current >= count)
 116     return (0);
 117   else
 118     return (data[current ++]);
 119 }
 120
 121
 122 //
 123 // 'ppdcArray::next()' - Return the next element in the array.
 124 //
 125
 126 ppdcShared *
 127 ppdcArray::next()
 128 {
 129   if (current >= count)
 130     return (0);
 131   else
 132     return (data[current ++]);
 133 }
 134
 135
 136 //
 137 // 'ppdcArray::remove()' - Remove an element from the array.
 138 //
 139
 140 void
 141 ppdcArray::remove(ppdcShared *d)                // I - Data element
 142 {
 143   int   i;                                      // Looping var
 144
 145
 146   for (i = 0; i < count; i ++)
 147     if (d == data[i])
 148       break;
 149
 150   if (i >= count)
 151     return;
 152
 153   count --;
 154   d->release();
 155
 156   if (i < count)
 157     memmove(data + i, data + i + 1, (count - i) * sizeof(ppdcShared *));
 158 }
 159
 160
 161 //
 162 // End of "$Id$".
 163 //