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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
/*
* io.c
*
* Implements the simple I/O 'helper' routines.
*
* Not really essential, but these routines were used extensively in GD,
* so they were moved here. They also make IOCtx calls look better...
*
* Written (or, at least, moved) 1999, Philip Warner.
*
*/
#include <math.h>
#include <string.h>
#include <stdlib.h>
#include "gd.h"
/* Use this for commenting out debug-print statements. */
/* Just use the first '#define' to allow all the prints... */
/*#define IO_DBG(s) (s) */
#define IO_DBG(s)
#define GD_IO_EOF_CHK(r) \
if (r == EOF) { \
return 0; \
} \
/*
* Write out a word to the I/O context pointer
*/
void Putword (int w, gdIOCtx * ctx)
{
unsigned char buf[2];
buf[0] = w & 0xff;
buf[1] = (w / 256) & 0xff;
(ctx->putBuf) (ctx, (char *) buf, 2);
}
void Putchar (int c, gdIOCtx * ctx)
{
(ctx->putC) (ctx, c & 0xff);
}
void gdPutC (const unsigned char c, gdIOCtx * ctx)
{
(ctx->putC) (ctx, c);
}
void gdPutWord (int w, gdIOCtx * ctx)
{
IO_DBG (php_gd_error("Putting word..."));
(ctx->putC) (ctx, (unsigned char) (w >> 8));
(ctx->putC) (ctx, (unsigned char) (w & 0xFF));
IO_DBG (php_gd_error("put."));
}
void gdPutInt (int w, gdIOCtx * ctx)
{
IO_DBG (php_gd_error("Putting int..."));
(ctx->putC) (ctx, (unsigned char) (w >> 24));
(ctx->putC) (ctx, (unsigned char) ((w >> 16) & 0xFF));
(ctx->putC) (ctx, (unsigned char) ((w >> 8) & 0xFF));
(ctx->putC) (ctx, (unsigned char) (w & 0xFF));
IO_DBG (php_gd_error("put."));
}
int gdGetC (gdIOCtx * ctx)
{
return ((ctx->getC) (ctx));
}
int gdGetByte (int *result, gdIOCtx * ctx)
{
int r;
r = (ctx->getC) (ctx);
GD_IO_EOF_CHK(r);
*result = r;
return 1;
}
int gdGetWord (int *result, gdIOCtx * ctx)
{
int r;
r = (ctx->getC) (ctx);
GD_IO_EOF_CHK(r);
*result = r << 8;
r = (ctx->getC) (ctx);
GD_IO_EOF_CHK(r);
*result += r;
return 1;
}
int gdGetInt (int *result, gdIOCtx * ctx)
{
int r;
r = (ctx->getC) (ctx);
GD_IO_EOF_CHK(r);
*result = r << 24;
r = (ctx->getC) (ctx);
GD_IO_EOF_CHK(r);
*result += r << 16;
r = (ctx->getC) (ctx);
if (r == EOF) {
return 0;
}
*result += r << 8;
r = (ctx->getC) (ctx);
GD_IO_EOF_CHK(r);
*result += r;
return 1;
}
int gdPutBuf (const void *buf, int size, gdIOCtx * ctx)
{
IO_DBG (php_gd_error("Putting buf..."));
return (ctx->putBuf) (ctx, buf, size);
IO_DBG (php_gd_error("put."));
}
int gdGetBuf (void *buf, int size, gdIOCtx * ctx)
{
return (ctx->getBuf) (ctx, buf, size);
}
int gdSeek (gdIOCtx * ctx, const int pos)
{
IO_DBG (php_gd_error("Seeking..."));
return ((ctx->seek) (ctx, pos));
IO_DBG (php_gd_error("Done."));
}
long gdTell (gdIOCtx * ctx)
{
IO_DBG (php_gd_error("Telling..."));
return ((ctx->tell) (ctx));
IO_DBG (php_gd_error ("told."));
}
|
