blob: 64a07a7a76558e014b956f72e051d0086e91b409 (
plain)
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
|
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "util/map.h"
#include "util/versie.h"
static void usage(FILE *f) {
fprintf(f,
"Gebruik: tak [-hV] <bestand...>\n"
"\n"
"Schakel bestanden aaneen naar standaard uitvoer omgekeerd.\n"
"\n"
" -h Toon deze hulptekst\n"
" -V Toon versienummer\n");
}
// Returns pointer to argument array containing the file names
static char** parse_options(int argc, char **argv) {
int opt;
while ((opt = getopt(argc, argv, "hV")) != -1) {
switch (opt) {
case 'h':
usage(stdout);
exit(0);
case 'V':
drukkedoos_print_versie(stdout, "tak");
exit(0);
case '?':
usage(stderr);
exit(1);
}
}
return argv + optind;
}
static void process(const char *fname) {
struct map *map = open_map(fname);
if (map == NULL) {
exit(1);
}
char *lstart, *lend;
lend = &map->addr[map->sb.st_size - 1];
while (lend > map->addr) {
if (*lend == '\n') {
lend--;
}
lstart = lend;
while (*lstart != '\n' && lstart != map->addr) {
lstart--;
}
if (lstart != map->addr) {
lstart++;
}
fwrite(lstart, 1, lend - lstart + 2, stdout);
lend = lstart-1;
}
close_map(map);
}
int entry_tak(int argc, char **argv) {
char **args = parse_options(argc, argv);
if (*args == NULL) {
fprintf(stderr, "tak: Standaard invoer niet ondersteund in deze projectie-gebaseerde implementatie\n");
return 1;
} else {
while (*args != NULL) {
process(*args);
args++;
}
}
return 0;
}
|