1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/*******************************************************************
*
* hugefile.c
*
* File I/O Component (body) for dealing with "huge" objects under
* MS-DOS. Relies on the "default" version, with a small hook.
*
* Written by Antoine Leca based on ideas from Dave Hoo.
* Copyright 1999 by Dave Hoo, Antoine Leca,
* David Turner, Robert Wilhelm, and Werner Lemberg.
*
* This file is part of the FreeType project, and may only be used
* modified and distributed under the terms of the FreeType project
* license, LICENSE.TXT. By continuing to use, modify, or distribute
* this file you indicate that you have read the license and
* understand and accept it fully.
*
* NOTE
*
* This file #includes the normal version, to avoid discrepancies
* between versions. It uses only ANSI-mandated "tricks", so
* any ANSI-compliant compiler should be able to compile this file.
*
******************************************************************/
#include "ttconfig.h"
#include "tttypes.h"
/* Here we include <stdio.h>, to have the proper definition of fread */
#include <stdio.h>
/* Then, we divert the use of fread to our version */
#undef fread
#define fread(ptr, size, n, stream) huge_fread(ptr, size, n, stream)
LOCAL_FUNC
Long huge_fread ( void *ptr, size_t size, Long n, FILE *stream );
/* Now, we include the "normal" version of ttfile.c */
/* The ANSI/ISO standard mandates that the include of <stdio.h> */
/* there have no bad effects. */
#include "ttfile.c"
/* Then, we define our implementation of fread that makes use of */
/* "huge"-allocated memory. */
/*******************************************************************
*
* Function : huge_fread
*
* Description : replacement version of fread that handles
* "huge"-allocated memory.
*
* Input : See the reference for the runtime library function fread
*
* Output : See the reference for the runtime library function fread
*
* Notes :
*
******************************************************************/
LOCAL_DEF
Long huge_fread ( void *ptr, size_t size, Long n, FILE *stream )
{
char TT_HUGE_PTR * p = (char TT_HUGE_PTR *) ptr;
ULong left = (ULong)n * size;
size_t toRead;
while ( left )
{
toRead = (left > 0x8000) ? 0x8000 : left;
if ( (fread)( p, 1, toRead, stream ) != toRead)
return -1;
else
{
left -= (ULong) toRead;
p += toRead;
}
}
return n * size;
}
/* END */
|
