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
|
#include <stdio.h>
#include <string.h>
#define LINEBUF 2048
static char lineBuf[LINEBUF];
static char blineBuf[LINEBUF];
static int lineLen;
static int blineLen;
static int words;
void finishLine();
struct awkemu
{
int cs;
};
void finishLine()
{
int i;
char *pword = blineBuf;
lineBuf[lineLen] = 0;
printf("endline(%i): %s\n", words, lineBuf );
for ( i = 0; i < words; i++ ) {
printf(" word: %s\n", pword );
pword += strlen(pword) + 1;
}
}
static const char _awkemu_actions [] = { 0, 1, 3, 1, 4, 2, 0, 3, 2, 0, 4, 2, 1, 3, 2, 2, 3, 2, 2, 4, 3, 0, 1, 3, 0 , };
static const char _awkemu_trans_keys [] = { 0, 1, 0, 1, 0, 1, 0 , };
static const char _awkemu_char_class [] = { 0, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0 , };
static const char _awkemu_index_offsets [] = { 0, 2, 4, 0 , };
static const char _awkemu_indicies [] = { 1, 2, 3, 4, 6, 7, 0 , };
static const char _awkemu_index_defaults [] = { 0, 0, 5, 0 , };
static const char _awkemu_trans_cond_spaces [] = { -1, -1, -1, -1, -1, -1, -1, -1, 0 , };
static const char _awkemu_cond_targs [] = { 0, 1, 2, 1, 2, 0, 1, 2, 0 , };
static const char _awkemu_cond_actions [] = { 11, 14, 17, 1, 3, 20, 5, 8, 0 , };
static const char _awkemu_nfa_targs [] = { 0, 0 , };
static const char _awkemu_nfa_offsets [] = { 0, 0, 0, 0 , };
static const char _awkemu_nfa_push_actions [] = { 0, 0 , };
static const char _awkemu_nfa_pop_trans [] = { 0, 0 , };
static const int awkemu_start = 2;
static const int awkemu_first_final = 2;
static const int awkemu_error = -1;
static const int awkemu_en_main = 2;
void awkemu_init( struct awkemu *fsm )
{
{
(fsm->cs) = ( int ) awkemu_start;
}
}
void awkemu_execute( struct awkemu *fsm, const char *_data, int _len )
{
const char *p = _data;
const char *pe = _data+_len;
{
unsigned int _trans = 0;
unsigned int _have = 0;
unsigned int _cont = 1;
const char *_acts;
unsigned int _nacts;
const char *_keys;
const char *_inds;
while ( _cont == 1 )
{
_have = 0;
if ( p == pe )
{
if ( _have == 0 )
_cont = 0;
}
if ( _cont == 1 )
{
if ( _have == 0 )
{
_keys = _awkemu_trans_keys + ((fsm->cs)<<1);
_inds = _awkemu_indicies + _awkemu_index_offsets[(fsm->cs)];
if ( ((*( p ))
)<= 32 && ((*( p ))
)>= 9 )
{
int _ic = ( int ) _awkemu_char_class[( int ) ((*( p ))
)- 9];
if ( _ic <= ( int ) (*( _keys+1 ))
&& _ic >= ( int ) (*( _keys ))
)
_trans = ( unsigned int ) (*( _inds + ( int ) (_ic - ( int ) (*( _keys ))
) ))
;
else
_trans = ( unsigned int ) _awkemu_index_defaults[(fsm->cs)];
}
else
{
_trans = ( unsigned int ) _awkemu_index_defaults[(fsm->cs)];
}
}
if ( _cont == 1 )
{
(fsm->cs) = ( int ) _awkemu_cond_targs[_trans];
if ( _awkemu_cond_actions[_trans]!= 0 )
{
_acts = _awkemu_actions + _awkemu_cond_actions[_trans];
_nacts = ( unsigned int ) (*( _acts ))
;
_acts += 1;
while ( _nacts > 0 )
{
switch ( (*( _acts ))
) {
case 0 :
{
lineLen = 0;
blineLen = 0;
words = 0;
}
break;
case 1 :
{
blineBuf[blineLen++] = (((*( p ))
));
}
break;
case 2 :
{
blineBuf[blineLen++] = 0;
words += 1;
}
break;
case 3 :
{
lineBuf[lineLen++] = (((*( p ))
));
}
break;
case 4 :
{
finishLine();
}
break;
}
_nacts -= 1;
_acts += 1;
}
}
if ( _cont == 1 )
p += 1;
}
}
}
}
}
int awkemu_finish( struct awkemu *fsm )
{
if ( fsm->cs == awkemu_error )
return -1;
if ( fsm->cs >= awkemu_first_final )
return 1;
return 0;
}
#include <stdio.h>
#define BUFSIZE 2048
struct awkemu fsm;
char buf[BUFSIZE];
void test( char *buf )
{
int len = strlen( buf );
awkemu_init( &fsm );
awkemu_execute( &fsm, buf, len );
if ( awkemu_finish( &fsm ) > 0 )
printf("ACCEPT\n");
else
printf("FAIL\n");
}
int main()
{
test( "" );
test( "one line with no newline" );
test( "one line\n" );
return 0;
}
|
