ppdc/ppdc-array.cxx

   1 //
   2 // Array class for the CUPS PPD Compiler.
   3 //
   4 // Copyright © 2020-2024 by OpenPrinting.
   5 // Copyright 2007-2019 by Apple Inc.
   6 // Copyright 2002-2005 by Easy Software Products.
   7 //
   8 // Licensed under Apache License v2.0.  See the file "LICENSE" for more information.
   9 //
  10
  11 //
  12 // Include necessary headers...
  13 //
  14
  15 #include "ppdc-private.h"
  16
  17
  18 //
  19 // 'ppdcArray::ppdcArray()' - Create a new array.
  20 //
  21
  22 ppdcArray::ppdcArray(ppdcArray *a)
  23   : ppdcShared()
  24 {
  25   PPDC_NEW;
  26
  27   if (a)
  28   {
  29     count = a->count;
  30     alloc = count;
  31
  32     if (count)
  33     {
  34       // Make a copy of the array...
  35       data = new ppdcShared *[count];
  36
  37       memcpy(data, a->data, (size_t)count * sizeof(ppdcShared *));
  38
  39       for (size_t i = 0; i < count; i ++)
  40         data[i]->retain();
  41     }
  42     else
  43       data = 0;
  44   }
  45   else
  46   {
  47     count = 0;
  48     alloc = 0;
  49     data  = 0;
  50   }
  51
  52   current = 0;
  53 }
  54
  55
  56 //
  57 // 'ppdcArray::~ppdcArray()' - Destroy an array.
  58 //
  59
  60 ppdcArray::~ppdcArray()
  61 {
  62   PPDC_DELETE;
  63
  64   for (size_t i = 0; i < count; i ++)
  65     data[i]->release();
  66
  67   if (alloc)
  68     delete[] data;
  69 }
  70
  71
  72 //
  73 // 'ppdcArray::add()' - Add an element to an array.
  74 //
  75
  76 void
  77 ppdcArray::add(ppdcShared *d)
  78 {
  79   ppdcShared    **temp;
  80
  81
  82   if (count >= alloc)
  83   {
  84     alloc += 10;
  85     temp  = new ppdcShared *[alloc];
  86
  87     memcpy(temp, data, (size_t)count * sizeof(ppdcShared *));
  88
  89     delete[] data;
  90     data = temp;
  91   }
  92
  93   data[count++] = d;
  94 }
  95
  96
  97 //
  98 // 'ppdcArray::first()' - Return the first element in the array.
  99 //
 100
 101 ppdcShared *
 102 ppdcArray::first()
 103 {
 104   current = 0;
 105
 106   if (current >= count)
 107     return (0);
 108   else
 109     return (data[current ++]);
 110 }
 111
 112
 113 //
 114 // 'ppdcArray::next()' - Return the next element in the array.
 115 //
 116
 117 ppdcShared *
 118 ppdcArray::next()
 119 {
 120   if (current >= count)
 121     return (0);
 122   else
 123     return (data[current ++]);
 124 }
 125
 126
 127 //
 128 // 'ppdcArray::remove()' - Remove an element from the array.
 129 //
 130
 131 void
 132 ppdcArray::remove(ppdcShared *d)                // I - Data element
 133 {
 134   size_t        i;                              // Looping var
 135
 136
 137   for (i = 0; i < count; i ++)
 138     if (d == data[i])
 139       break;
 140
 141   if (i >= count)
 142     return;
 143
 144   count --;
 145   d->release();
 146
 147   if (i < count)
 148     memmove(data + i, data + i + 1, (size_t)(count - i) * sizeof(ppdcShared *));
 149 }