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
|
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "cpp.h"
Includelist includelist[NINCLUDE];
extern char *objname;
void appendDirToIncludeList( char *dir )
{
int i;
char *fqdir;
fqdir = (char *)newstring( (uchar *)includelist[NINCLUDE-1].file, 256, 0 );
strcat( fqdir, "/" );
strcat( fqdir, dir );
//avoid adding it more than once
for (i=NINCLUDE-2; i>=0; i--) {
if (includelist[i].file &&
!strcmp (includelist[i].file, fqdir)) {
return;
}
}
for (i=NINCLUDE-2; i>=0; i--) {
if (includelist[i].file==NULL) {
includelist[i].always = 1;
includelist[i].file = fqdir;
break;
}
}
if (i<0)
error(FATAL, "Too many -I directives");
}
void
doinclude(Tokenrow *trp)
{
char fname[256], iname[256];
Includelist *ip;
int angled, len, fd, i;
trp->tp += 1;
if (trp->tp>=trp->lp)
goto syntax;
if (trp->tp->type!=STRING && trp->tp->type!=LT) {
len = trp->tp - trp->bp;
expandrow(trp, "<include>");
trp->tp = trp->bp+len;
}
if (trp->tp->type==STRING) {
len = trp->tp->len-2;
if (len > sizeof(fname) - 1)
len = sizeof(fname) - 1;
strncpy(fname, (char*)trp->tp->t+1, len);
angled = 0;
} else if (trp->tp->type==LT) {
len = 0;
trp->tp++;
while (trp->tp->type!=GT) {
if (trp->tp>trp->lp || len+trp->tp->len+2 >= sizeof(fname))
goto syntax;
strncpy(fname+len, (char*)trp->tp->t, trp->tp->len);
len += trp->tp->len;
trp->tp++;
}
angled = 1;
} else
goto syntax;
trp->tp += 2;
if (trp->tp < trp->lp || len==0)
goto syntax;
fname[len] = '\0';
appendDirToIncludeList( basepath( fname ) );
if (fname[0]=='/') {
fd = open(fname, 0);
strcpy(iname, fname);
} else for (fd = -1,i=NINCLUDE-1; i>=0; i--) {
ip = &includelist[i];
if (ip->file==NULL || ip->deleted || (angled && ip->always==0))
continue;
if (strlen(fname)+strlen(ip->file)+2 > sizeof(iname))
continue;
strcpy(iname, ip->file);
strcat(iname, "/");
strcat(iname, fname);
if ((fd = open(iname, 0)) >= 0)
break;
}
if ( Mflag>1 || (!angled&&Mflag==1) ) {
write(1,objname,strlen(objname));
write(1,iname,strlen(iname));
write(1,"\n",1);
}
if (fd >= 0) {
if (++incdepth > 10)
error(FATAL, "#include too deeply nested");
setsource((char*)newstring((uchar*)iname, strlen(iname), 0), fd, NULL);
genline();
} else {
trp->tp = trp->bp+2;
error(ERROR, "Could not find include file %r", trp);
}
return;
syntax:
error(ERROR, "Syntax error in #include");
return;
}
/*
* Generate a line directive for cursource
*/
void
genline(void)
{
static Token ta = { UNCLASS };
static Tokenrow tr = { &ta, &ta, &ta+1, 1 };
uchar *p;
ta.t = p = (uchar*)outp;
strcpy((char*)p, "#line ");
p += sizeof("#line ")-1;
p = (uchar*)outnum((char*)p, cursource->line);
*p++ = ' '; *p++ = '"';
if (cursource->filename[0]!='/' && wd[0]) {
strcpy((char*)p, wd);
p += strlen(wd);
*p++ = '/';
}
strcpy((char*)p, cursource->filename);
p += strlen((char*)p);
*p++ = '"'; *p++ = '\n';
ta.len = (char*)p-outp;
outp = (char*)p;
tr.tp = tr.bp;
puttokens(&tr);
}
void
setobjname(char *f)
{
int n = strlen(f);
objname = (char*)domalloc(n+5);
strcpy(objname,f);
if(objname[n-2]=='.'){
strcpy(objname+n-1,"$O: ");
}else{
strcpy(objname+n,"$O: ");
}
}
|
