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
|
%{
/*
* Copyright (c) 1998 - 2001 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#undef ECHO
#include "make_cmds.h"
#include "parse.h"
RCSID("$Id: lex.l 10703 2001-09-16 23:10:10Z assar $");
static unsigned lineno = 1;
static int getstring(void);
#define YY_NO_UNPUT
#undef ECHO
%}
%%
command_table { return TABLE; }
request { return REQUEST; }
unknown { return UNKNOWN; }
unimplemented { return UNIMPLEMENTED; }
end { return END; }
#[^\n]* ;
[ \t] ;
\n { lineno++; }
\" { return getstring(); }
[a-zA-Z0-9_]+ { yylval.string = strdup(yytext); return STRING; }
. { return *yytext; }
%%
#ifndef yywrap /* XXX */
int
yywrap ()
{
return 1;
}
#endif
static int
getstring(void)
{
char x[128];
int i = 0;
int c;
int backslash = 0;
while((c = input()) != EOF){
if(backslash) {
if(c == 'n')
c = '\n';
else if(c == 't')
c = '\t';
x[i++] = c;
backslash = 0;
continue;
}
if(c == '\n'){
error_message("unterminated string");
lineno++;
break;
}
if(c == '\\'){
backslash++;
continue;
}
if(c == '\"')
break;
x[i++] = c;
}
x[i] = '\0';
yylval.string = strdup(x);
return STRING;
}
void
error_message (const char *format, ...)
{
va_list args;
va_start (args, format);
fprintf (stderr, "%s:%d: ", filename, lineno);
vfprintf (stderr, format, args);
va_end (args);
numerror++;
}
|
