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
|
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "include/mdb.h"
#include "cmd.h"
int getid(char *selector);
int printkeys(tablist_t *list, int id, char **keys, int klen);
void printkey(tabidx_t idx);
int main(int argc, char **argv)
{
if (argc > 2) {
printf("usage: %s [db file]\n", argv[0]);
exit(1);
}
char *filename = NULL;
if (argc == 2)
filename = argv[1];
tablist_t *list = readdb(filename);
if (list == NULL)
exit(1);
char *cmd = calloc(1024, sizeof(char));
while (fgets(cmd, 1024, stdin) != NULL) {
cmd[strlen(cmd) - 1] = '\0';
if (!strcmp(cmd, "exit") || !strcmp(cmd, ""))
break;
struct cmd evaled = eval(cmd);
int id = getid(evaled.selector);
switch (evaled.type) {
case GET:
printkeys(list, id, evaled.params, evaled.plen);
break;
case SET:
id = setkeys(&list, id, evaled.params, evaled.plen);
if (!id && filename)
writedb(filename, list);
break;
case DEL:
id = delkeys(list, id, evaled.params, evaled.plen);
if (!id && filename)
writedb(filename, list);
break;
case ERR:
fprintf(stderr, "Unkown command: %s\n", cmd);
break;
}
if (evaled.params != NULL) {
for (int i = 0; i < evaled.plen; ++i)
free(evaled.params[i]);
free(evaled.params);
}
free(evaled.selector);
}
free(cmd);
delkeys(list, -1, NULL, 0);
free(list);
exit(0);
}
int getid(char *selector) {
if (selector == NULL)
return -2;
int id;
if (!strcmp(selector, "*"))
return -1;
else if (isdigit(selector[0]) &&
(id = atoi(selector)) >= 0)
return id;
else
return -2;
}
int printkeys(tablist_t *list, int id, char **keys, int klen)
{
tablist_t *indexes = getkeys(list, id, keys, klen);
if (indexes == NULL)
return 1;
for (int i = 0; i < indexes[0].len; ++i) {
printf("{ id: %d ", i);
for (int j = 0; indexes[i].tab[j].flag; ++j)
printkey(indexes[i].tab[j]);
printf("}\n");
}
free(indexes);
return 0;
}
void printkey(tabidx_t idx)
{
printf("%s: ", idx.key);
switch (idx.flag) {
case 1:
printf("%.2lf ", idx.value.num);
break;
case 2:
printf("%s ", idx.value.boolean ? "true" : "false");
break;
case 3:
printf("%s ", idx.value.str);
break;
}
}
|
