rom/devs/console/charmap.c

   1 /*
   2     Copyright © 2010-2014, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Code for CONU_CHARMAP console units.
   6     Lang: english
   7 */
   8
   9 #include "charmap.h"
  10 #include <proto/exec.h>
  11 #include <string.h>
  12
  13 struct charmap_line *charmap_dispose_line(struct charmap_line *line)
  14 {
  15     struct charmap_line *next = NULL;
  16     if (line)
  17     {
  18         next = line->next;
  19         if (line->size)
  20         {
  21             if (line->text)
  22                 FreeMem(line->text, line->size);
  23             if (line->fgpen)
  24                 FreeMem(line->fgpen, line->size);
  25             if (line->bgpen)
  26                 FreeMem(line->bgpen, line->size);
  27         }
  28         FreeMem(line, sizeof(struct charmap_line));
  29     }
  30     return next;
  31 }
  32
  33 VOID charmap_dispose_lines(struct charmap_line *line)
  34 {
  35     while ((line = charmap_dispose_line(line)));
  36 }
  37
  38 struct charmap_line *charmap_newline(struct charmap_line *next,
  39     struct charmap_line *prev)
  40 {
  41     struct charmap_line *newline =
  42         (struct charmap_line *)AllocMem(sizeof(struct charmap_line),
  43         MEMF_ANY);
  44     newline->next = next;
  45     newline->prev = prev;
  46     if (next)
  47         next->prev = newline;
  48     if (prev)
  49         prev->next = newline;
  50     newline->text = 0;
  51     newline->fgpen = 0;
  52     newline->bgpen = 0;
  53     newline->flags = 0;
  54     newline->size = 0;
  55     return newline;
  56 }
  57
  58
  59 // FIXME: **much** faster if add capacity to charmap_line and allocate
  60 // a few characters at a time
  61 VOID charmap_resize(struct charmap_line *line, ULONG newsize)
  62 {
  63     char *text = line->text;
  64     BYTE *fgpen = line->fgpen;
  65     BYTE *bgpen = line->bgpen;
  66     BYTE *flags = line->flags;
  67     ULONG size = line->size;
  68
  69     if (newsize)
  70     {
  71         line->text = (char *)AllocMem(newsize, MEMF_ANY);
  72         if (line->text)
  73             memset(line->text, 0, newsize);
  74         line->fgpen = (BYTE *) AllocMem(newsize, MEMF_ANY);
  75         if (line->fgpen)
  76             memset(line->fgpen, 0, newsize);
  77         line->bgpen = (BYTE *) AllocMem(newsize, MEMF_ANY);
  78         if (line->bgpen)
  79             memset(line->bgpen, 0, newsize);
  80         line->flags = (BYTE *) AllocMem(newsize, MEMF_ANY);
  81         if (line->flags)
  82             memset(line->flags, 0, newsize);
  83         line->size = newsize;
  84     }
  85     else
  86     {
  87         line->text = 0;
  88         line->fgpen = 0;
  89         line->bgpen = 0;
  90         line->flags = 0;
  91         line->size = 0;
  92     }
  93
  94     if (text && line->text)
  95         memcpy(line->text, text, size);
  96     if (fgpen && line->fgpen)
  97         memcpy(line->fgpen, fgpen, size);
  98     if (bgpen && line->bgpen)
  99         memcpy(line->bgpen, bgpen, size);
 100     if (flags && line->flags)
 101         memcpy(line->flags, flags, size);
 102
 103     if (text)
 104         FreeMem(text, size);
 105     if (fgpen)
 106         FreeMem(fgpen, size);
 107     if (bgpen)
 108         FreeMem(bgpen, size);
 109     if (flags)
 110         FreeMem(flags, size);
 111 }