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
|
#ifdef _plan9_
#include <u.h>
#include <libc.h>
#else
#include <stdlib.h>
#endif
#include <ctype.h>
#include <config.h>
#include <xio.h>
#include <xshl.h>
struct helpstatus {
int eol;
xio_file file;
};
static int gethelp(void *userdata)
{
struct helpstatus *s = (struct helpstatus *) userdata;
int c = xio_getc(s->file);
if (c == '\r')
return (gethelp(userdata));
if (c < 0 || c > 255)
return 0;
if (c == '%' && s->eol)
return 0;
s->eol = (c == '\n');
return c;
}
struct xshl_line *help_make(CONST char *command,
int getwidth(void *, int flags,
CONST char *text), int width,
int smallheight, int bigheight)
{
struct helpstatus *s = (struct helpstatus *) malloc(sizeof(*s));
struct xshl_line *line;
s->file = xio_gethelp();
if (s->file == XIO_FAILED) {
free(s);
return 0;
}
s->eol = 1;
while (1) {
int c;
c = xio_getc(s->file);
if (c == '%' && s->eol) {
c = xio_getc(s->file);
do {
int i = 0;
i = 0;
while (command[i] && c == command[i]) {
c = xio_getc(s->file);
i++;
}
if (!command[i]) {
if (isspace(c)) {
while (c != '\n' && !xio_feof(s->file))
c = xio_getc(s->file);
line =
xshl_interpret(s, gethelp, width, getwidth, 0,
smallheight, bigheight);
xio_close(s->file);
free(s);
return (line);
}
} else {
while (c != '\n' && c != ' ' && !xio_feof(s->file))
c = xio_getc(s->file);
if (c == ' ')
while (c == ' ')
c = xio_getc(s->file);
}
}
while (c != '\n' && !xio_feof(s->file));
} /*c==% */
s->eol = (c == '\n');
if (xio_feof(s->file)) {
xio_close(s->file);
return NULL;
}
} /*while 1 */
}
#if _NEVER_
void help_print(char *name, int skip, int width)
{
struct xshl_line *l;
l = help_make(name, xshl_textlen, width, 1, 1);
if (l == NULL) {
printf("Help not available!\n");
return;
}
xshl_print(skip, l);
xshl_free(l);
}
#endif
|
