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
|
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include "cpp.h"
extern int getopt(int, char *const *, const char *);
extern char *optarg, rcsid[];
extern int optind;
int verbose;
int Mflag; /* only print active include files */
char *objname; /* "src.$O: " */
int Cplusplus = 1;
void
setup(int argc, char **argv)
{
int c, fd, i;
char *fp, *dp;
Tokenrow tr;
extern void setup_kwtab(void);
setup_kwtab();
while ((c = getopt(argc, argv, "MNOVv+I:D:U:F:lg")) != -1)
switch (c) {
case 'N':
for (i=0; i<NINCLUDE; i++)
if (includelist[i].always==1)
includelist[i].deleted = 1;
break;
case 'I':
for (i=NINCLUDE-2; i>=0; i--) {
if (includelist[i].file==NULL) {
includelist[i].always = 1;
includelist[i].file = optarg;
break;
}
}
if (i<0)
error(FATAL, "Too many -I directives");
break;
case 'D':
case 'U':
setsource("<cmdarg>", -1, optarg);
maketokenrow(3, &tr);
gettokens(&tr, 1);
doadefine(&tr, c);
unsetsource();
break;
case 'M':
Mflag++;
break;
case 'v':
fprintf(stderr, "%s %s\n", argv[0], rcsid);
break;
case 'V':
verbose++;
break;
case '+':
Cplusplus++;
break;
default:
break;
}
dp = ".";
fp = "<stdin>";
fd = 0;
if (optind<argc) {
if ((fp = strrchr(argv[optind], '/')) != NULL) {
int len = fp - argv[optind];
dp = (char*)newstring((uchar*)argv[optind], len+1, 0);
dp[len] = '\0';
}
fp = (char*)newstring((uchar*)argv[optind], strlen(argv[optind]), 0);
if ((fd = open(fp, 0)) <= 0)
error(FATAL, "Can't open input file %s", fp);
}
if (optind+1<argc) {
int fdo = creat(argv[optind+1], 0666);
if (fdo<0)
error(FATAL, "Can't open output file %s", argv[optind+1]);
dup2(fdo, 1);
}
if(Mflag)
setobjname(fp);
includelist[NINCLUDE-1].always = 0;
includelist[NINCLUDE-1].file = dp;
setsource(fp, fd, NULL);
}
/* memmove is defined here because some vendors don't provide it at
all and others do a terrible job (like calling malloc) */
// -- ouch, that hurts -- ln
#ifdef memmove
#undef memmove
#endif
void *
memmove(void *dp, const void *sp, size_t n)
{
unsigned char *cdp, *csp;
if (n<=0)
return 0;
cdp = dp;
csp = (unsigned char *)sp;
if (cdp < csp) {
do {
*cdp++ = *csp++;
} while (--n);
} else {
cdp += n;
csp += n;
do {
*--cdp = *--csp;
} while (--n);
}
return 0;
}
|
