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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/********************************************************
* Printg Routines
********************************************************/
#include "../../gfx.h"
#if GFX_USE_GFILE && GFILE_NEED_PRINTG
#include <stdarg.h>
#define MAX_FILLER 11
#define FLOAT_PRECISION 100000
int fnprintg(GFILE *f, int maxlen, const char *fmt, ...) {
int res;
va_list ap;
va_start(ap, fmt);
res = vfnprintg(f, maxlen, fmt, ap);
va_end(ap);
return res;
}
static char *ltoa_wd(char *p, long num, unsigned radix, long divisor) {
int i;
char * q;
if (!divisor) divisor = num;
q = p + MAX_FILLER;
do {
i = (int)(num % radix);
i += '0';
if (i > '9')
i += 'A' - '0' - 10;
*--q = i;
num /= radix;
} while ((divisor /= radix) != 0);
i = (int)(p + MAX_FILLER - q);
do {
*p++ = *q++;
} while (--i);
return p;
}
int vfnprintg(GFILE *f, int maxlen, const char *fmt, va_list arg) {
int ret;
char *p, *s, c, filler;
int i, precision, width;
gBool is_long, left_align;
long l;
#if GFILE_ALLOW_FLOATS
float fpv;
char tmpbuf[2*MAX_FILLER + 1];
#else
char tmpbuf[MAX_FILLER + 1];
#endif
ret = 0;
if (maxlen < 0)
return 0;
if (!maxlen)
maxlen = -1;
while (*fmt) {
if (*fmt != '%') {
gfileWrite(f, fmt, 1);
ret++; if (!--maxlen) return ret;
fmt++;
continue;
}
fmt++;
p = s = tmpbuf;
left_align = gFalse;
filler = ' ';
width = 0;
precision = 0;
if (*fmt == '-') {
fmt++;
left_align = gTrue;
}
if (*fmt == '0') {
fmt++;
filler = '0';
}
while (1) {
c = *fmt++;
if (c >= '0' && c <= '9') {
c -= '0';
width = width * 10 + c;
} else if (c == '*')
width = va_arg(arg, int);
else
break;
}
if (c == '.') {
while (1) {
c = *fmt++;
if (c >= '0' && c <= '9') {
c -= '0';
precision = precision * 10 + c;
} else if (c == '*')
precision = va_arg(arg, int);
else
break;
}
}
/* Long modifier.*/
if (c == 'l' || c == 'L') {
is_long = gTrue;
if (*fmt)
c = *fmt++;
}
else
is_long = (c >= 'A') && (c <= 'Z');
/* Command decoding.*/
switch (c) {
case 0:
return ret;
case 'c':
filler = ' ';
*p++ = va_arg(arg, int);
break;
case 's':
filler = ' ';
if ((s = va_arg(arg, char *)) == 0)
s = "(null)";
if (precision == 0)
precision = 32767;
for (p = s; *p && (--precision >= 0); p++);
break;
case 'D':
case 'd':
if (is_long)
l = va_arg(arg, long);
else
l = va_arg(arg, int);
if (l < 0) {
*p++ = '-';
l = -l;
}
p = ltoa_wd(p, l, 10, 0);
break;
#if GFILE_ALLOW_FLOATS
case 'f':
fpv = (float) va_arg(arg, double);
if (fpv < 0) {
*p++ = '-';
fpv = -fpv;
}
l = fpv;
p = ltoa_wd(p, l, 10, 0);
*p++ = '.';
l = (fpv - l) * FLOAT_PRECISION;
p = ltoa_wd(p, l, 10, FLOAT_PRECISION / 10);
break;
#endif
case 'X':
case 'x':
c = 16;
goto unsigned_common;
case 'U':
case 'u':
c = 10;
goto unsigned_common;
case 'O':
case 'o':
c = 8;
unsigned_common:
if (is_long)
l = va_arg(arg, long);
else
l = va_arg(arg, int);
p = ltoa_wd(p, l, c, 0);
break;
default:
*p++ = c;
break;
}
i = (int)(p - s);
if ((width -= i) < 0)
width = 0;
if (!left_align)
width = -width;
if (width < 0) {
if (*s == '-' && filler == '0') {
gfileWrite(f, s++, 1);
ret++; if (!--maxlen) return ret;
i--;
}
do {
gfileWrite(f, &filler, 1);
ret++; if (!--maxlen) return ret;
} while (++width != 0);
}
while (--i >= 0) {
gfileWrite(f, s++, 1);
ret++; if (!--maxlen) return ret;
}
while (width) {
gfileWrite(f, &filler, 1);
ret++; if (!--maxlen) return ret;
width--;
}
}
return ret;
}
#endif //GFX_USE_GFILE && GFILE_NEED_PRINTG
|