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
|
#include "control.h"
#include <unistd.h>
#include <errno.h>
#include "buffer.h"
#include "getln.h"
#include "open.h"
#include "scan.h"
#include "stralloc.h"
static char inbuf[2048];
static stralloc line = {0};
static stralloc me = {0};
static int meok = 0;
/** @file control.c
*/
static void striptrailingwhitespace(stralloc *sa)
{
while (sa->len > 0) {
switch (sa->s[sa->len - 1]) {
case '\n':
case ' ':
case '\t': --sa->len; break;
default: return;
}
}
}
int control_init(void)
{
int r;
r = control_readline(&me, "control/me");
if (r == 1) meok = 1;
return r;
}
int control_rldef(stralloc *sa, char *fn, int flagme, char *def)
{
int r;
r = control_readline(sa, fn);
if (r) return r;
if (flagme && meok) return stralloc_copy(sa, &me) ? 1 : -1;
if (def) return stralloc_copys(sa, def) ? 1 : -1;
return r;
}
int control_readline(stralloc *sa, char *fn)
{
buffer b;
int fd;
int match;
fd = open_read(fn);
if (fd == -1) {
if (errno == ENOENT) return 0;
return -1;
}
buffer_init(&b, read, fd, inbuf, sizeof(inbuf));
if (getln(&b, sa, &match, '\n') == -1) {
close(fd);
return -1;
}
striptrailingwhitespace(sa);
close(fd);
return 1;
}
int control_readint(unsigned long *i, char *fn)
{
unsigned long u;
switch (control_readline(&line, fn)) {
case 0: return 0;
case -1: return -1;
}
if (!stralloc_0(&line)) return -1;
if (!scan_ulong(line.s, &u)) return 0;
*i = u;
return 1;
}
int control_readfile(stralloc *sa, char *fn, int flagme)
{
buffer b;
int fd;
int match;
if (!stralloc_copys(sa, "")) return -1;
fd = open_read(fn);
if (fd == -1) {
if (errno == ENOENT) {
if (flagme && meok) {
if (!stralloc_copy(sa, &me)) return -1;
if (!stralloc_0(sa)) return -1;
return 1;
}
return 0;
}
return -1;
}
buffer_init(&b, read, fd, inbuf, sizeof(inbuf));
for (;;) {
if (getln(&b, &line, &match, '\n') == -1) break;
if (!match && !line.len) {
close(fd);
return 1;
}
striptrailingwhitespace(&line);
if (!stralloc_0(&line)) break;
if (line.s[0])
if (line.s[0] != '#')
if (!stralloc_cat(sa, &line)) break;
if (!match) {
close(fd);
return 1;
}
}
close(fd);
return -1;
}
|
