ppdc/ppdc-array.cxx

   1 //
   2 // "$Id$"
   3 //
   4 //   Array class for the CUPS PPD Compiler.
   5 //
   6 //   Copyright 2007-2009 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-private.h"
  30
  31
  32 //
  33 // 'ppdcArray::ppdcArray()' - Create a new array.
  34 //
  35
  36 ppdcArray::ppdcArray(ppdcArray *a)
  37   : ppdcShared()
  38 {
  39   PPDC_NEW;
  40
  41   if (a)
  42   {
  43     count = a->count;
  44     alloc = count;
  45
  46     if (count)
  47     {
  48       // Make a copy of the array...
  49       data = new ppdcShared *[count];
  50
  51       memcpy(data, a->data, count * sizeof(ppdcShared *));
  52
  53       for (int i = 0; i < count; i ++)
  54         data[i]->retain();
  55     }
  56     else
  57       data = 0;
  58   }
  59   else
  60   {
  61     count = 0;
  62     alloc = 0;
  63     data  = 0;
  64   }
  65
  66   current = 0;
  67 }
  68
  69
  70 //
  71 // 'ppdcArray::~ppdcArray()' - Destroy an array.
  72 //
  73
  74 ppdcArray::~ppdcArray()
  75 {
  76   PPDC_DELETE;
  77
  78   for (int i = 0; i < count; i ++)
  79     data[i]->release();
  80
  81   if (alloc)
  82     delete[] data;
  83 }
  84
  85
  86 //
  87 // 'ppdcArray::add()' - Add an element to an array.
  88 //
  89
  90 void
  91 ppdcArray::add(ppdcShared *d)
  92 {
  93   ppdcShared    **temp;
  94
  95
  96   if (count >= alloc)
  97   {
  98     alloc += 10;
  99     temp  = new ppdcShared *[alloc];
 100
 101     memcpy(temp, data, count * sizeof(ppdcShared *));
 102
 103     delete[] data;
 104     data = temp;
 105   }
 106
 107   data[count++] = d;
 108 }
 109
 110
 111 //
 112 // 'ppdcArray::first()' - Return the first element in the array.
 113 //
 114
 115 ppdcShared *
 116 ppdcArray::first()
 117 {
 118   current = 0;
 119
 120   if (current >= count)
 121     return (0);
 122   else
 123     return (data[current ++]);
 124 }
 125
 126
 127 //
 128 // 'ppdcArray::next()' - Return the next element in the array.
 129 //
 130
 131 ppdcShared *
 132 ppdcArray::next()
 133 {
 134   if (current >= count)
 135     return (0);
 136   else
 137     return (data[current ++]);
 138 }
 139
 140
 141 //
 142 // 'ppdcArray::remove()' - Remove an element from the array.
 143 //
 144
 145 void
 146 ppdcArray::remove(ppdcShared *d)                // I - Data element
 147 {
 148   int   i;                                      // Looping var
 149
 150
 151   for (i = 0; i < count; i ++)
 152     if (d == data[i])
 153       break;
 154
 155   if (i >= count)
 156     return;
 157
 158   count --;
 159   d->release();
 160
 161   if (i < count)
 162     memmove(data + i, data + i + 1, (count - i) * sizeof(ppdcShared *));
 163 }
 164
 165
 166 //
 167 // End of "$Id$".
 168 //