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
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
|
// Unicode support by Jim Park -- 08/22/2007
#include <windows.h>
#include <stdio.h>
#include "MyMath.h"
#include "Math.h"
// Converts String to Int (Dec, Hex) or Float value
void StringToItem(TCHAR *&s, ExpressionItem *item, int options)
{
item->type = IT_CONST | ITC_INT;
__int64 &v=*((__int64*)&(item->param1));
v = 0;
// Check for right input
if (!s) return;
// String-value
if ((((options & (STI_FLOAT | STI_INT)) == 0) || *s == _T('\'') || *s == _T('\"') || *s == _T('`') ||
((*s != _T('+')) && (*s != _T('-')) && ((*s < _T('0')) || (*s > _T('9')))))
&& (options & STI_STRING))
{
// end of string char
TCHAR eol = 0;
if (*s == _T('\'') || *s == _T('\"') || *s == _T('`')) eol = *s;
else s--;
item->type = IT_CONST | ITC_STRING;
// allocate memory buffer for string
TCHAR *sp;
sp = *((TCHAR**)&(item->param1)) = AllocString();
while (*(++s) && (*s != eol))
{
*(sp++) = *s;
}
if (*s == eol) s++;
*sp = 0;
} else
{
// strip leading spaces and tabs
while ((*s == _T(' ')) || (*s == _T('\t'))) s++;
// Hex-value
if ((options & STI_INT) && *s == _T('0') && (s[1] == _T('x') || s[1] == _T('X')))
{
s++;
while (*(s+1) == _T('0')) s++;
for (;;)
{
int c=*(++s);
if (c >= _T('0') && c <= _T('9')) c-=_T('0');
else if (c >= _T('a') && c <= _T('f')) c-=_T('a')-10;
else if (c >= _T('A') && c <= _T('F')) c-=_T('A')-10;
else break;
v<<=4;
v+=c;
}
}
// Dec-value, possible floating-point
else
{
int sign=0, numsignif = 0;
if (*s == _T('-')) sign++; else s--;
while (*(s+1) == _T('0')) s++;
for (;;)
{
int c=*(++s) - _T('0'); numsignif++;
if ((options & STI_FLOAT) &&
((c == (_T('e')-_T('0'))) || (c==(_T('E')-_T('0'))) || (c==(_T('.')-_T('0')))
|| (numsignif > 18)))
{
// Switch to floating point conversion routine
item->type = IT_CONST | ITC_FLOAT;
double& d = *((double*)&(item->param1));
d = (double) v;
while ((c >= 0) && (c <= 9))
{
d = d*10.0 + (double) c;
c=*(++s) - _T('0');
}
// sub-decimal part
if (c == (_T('.')-_T('0')))
{
double pwr = 1.0, dec = 0.0;
for (;;)
{
c=*(++s) - _T('0');
if ((c < 0) || (c > 9)) break;
dec = dec*10.0 + (double) c;
pwr *= 10.0;
}
d += dec/pwr;
}
// exponental part
if ((c == (_T('E')-_T('0'))) || (c == (_T('e')-_T('0'))))
{
int expc = 0, esign = 0;
s++;
// detect exponential sign
if ((*s == _T('+')) || (*s == _T('-')))
esign = (*s == _T('-'));
else s--;
// detect exp value
for (;;)
{
c=*(++s) - _T('0');
if ((c < 0) || (c > 9)) break;
expc = expc*10 + c;
}
if (expc >= DBL_MAX_EXP)
{
d = HUGE_VAL;
expc = 0;
}
double pwr = 1;
while (expc > 99) { pwr *= 1.0e100; expc -= 100; }
while (expc > 9) { pwr *= 1.0e10; expc -= 10; }
while (expc) { pwr *= 10.0; expc--; }
if (esign) d /= pwr;
else d *= pwr;
}
if (sign) d = -d;
return;
}
if (c < 0 || c > 9) break;
v*=10;
v+=c;
}
if (sign) v = -v;
if ((options & STI_FLOAT) && ((options & STI_INT) == 0))
{
double& d = *((double*)&(item->param1));
d = (double) v;
item->type = IT_CONST | ITC_FLOAT;
}
}
}
}
void ItemToString(TCHAR *sbuf, ExpressionItem *item)
{
if ((item == NULL) || ((item->type & ITEMTYPE) != IT_CONST))
{
*sbuf = 0;
return;
}
switch (item->type & ITEMSUBTYPE)
{
case ITC_STRING:
{
TCHAR *ptr = *((TCHAR**)&(item->param1));
while ( (*(sbuf++) = *(ptr++)) );
}
break;
case ITC_ARRAY:
{
ArrayDesc *ad = (ArrayDesc *) item->param1;
for (int index = 0; index < ad->count; index++)
if ((ad->array[index]) &&
((ad->array[index]->type & (ITEMTYPE|ITEMSUBTYPE)) == (IT_CONST | ITC_INT)))
if ((*(sbuf++) = (TCHAR) *((__int64*)&(ad->array[index]->param1))) == 0)
break;
}
break;
case ITC_FLOAT:
FloatFormat(sbuf, *((double*)&(item->param1)), 6);
break;
case ITC_INT:
itoa64(*((__int64*)&(item->param1)), sbuf);
break;
}
}
void itoa64(__int64 i, TCHAR *buffer)
{
TCHAR buf[128], *b = buf;
if (i < 0)
{
*(buffer++) = _T('-');
i = -i;
}
if (i == 0) *(buffer++) = _T('0');
else
{
while (i > 0)
{
*(b++) = _T('0') + ((TCHAR) (i%10));
i /= 10;
}
while (b > buf) *(buffer++) = *(--b);
}
*buffer = 0;
}
#define POS_INFINITY _T("#INF")
#define NEG_INFINITY _T("-#INF")
void FloatFormat(TCHAR *s, double value, int options)
{
TCHAR format[128];
int prec = options & 0xF;
*s = 0;
if(value == HUGE_VAL)
{
lstrcpy(s, POS_INFINITY);
return;
} else if(value == -HUGE_VAL) {
lstrcpy(s, NEG_INFINITY);
return;
}
if (options & FF_NOEXP)
{
_stprintf(format, _T("%%.%df"), prec);
}
else if (options & FF_EXP)
{
_stprintf(format, _T("%%.%de"), prec);
}
else if (options & FF_LEXP)
{
_stprintf(format, _T("%%.%dE"), prec);
}
else
{
_stprintf(format, _T("%%.%dg"), prec);
}
_stprintf(s, format, value);
}
int lstrcmpn(TCHAR *s1, const TCHAR *s2, int chars)
{
while ((chars > 0) && (*s1) && (*s2) && (*(s1) == *(s2))) chars--, s1++, s2++;
if ((chars == 0) || (*s1 == *s2)) return 0;
return (*s1 - *s2);
}
|
