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
|
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <string.h>
#include <guile-sql.h>
#include <mysql/mysql.h>
SCM
s_mysql_mark(struct sql_connect *conn)
{
return SCM_BOOL_F;
}
scm_sizet
s_mysql_free(struct sql_connect *conn)
{
MYSQL *mysql = (MYSQL*) conn->data;
if (!mysql)
return 0;
mysql_close(mysql);
free(mysql);
return sizeof(MYSQL);
}
SCM
s_mysql_connect (char *hostname, int port,
char *dbname, char *user, char *pass, char *why)
{
MYSQL *mysql;
SCM smob;
struct sql_connect *conn;
mysql = mysql_init(NULL);
if (!mysql)
return SCM_BOOL_F;
if (!mysql_real_connect(mysql, hostname,
user, pass, dbname,
port, NULL, 0)) {
mysql_close(mysql);
return SCM_BOOL_F;
}
smob = sql_connect_create("mysql");
conn = (struct sql_connect *)SCM_CDR(smob);
conn->data = mysql;
return smob;
}
SCM
s_mysql_query(struct sql_connect *conn, char *query)
{
MYSQL *mysql = conn->data;
MYSQL_RES *result;
SCM cell;
if (mysql_query(mysql, query))
scm_misc_error("s_mysql_query",
"MySQL error: ~S",
SCM_LIST1(scm_makfrom0str(mysql_error(mysql))));
result = mysql_store_result(mysql);
if (result) {
int nfields = mysql_num_fields(result);
int nrows = mysql_num_rows(result);
int i, j;
SCM row_head = SCM_EOL, row_tail;
for (i = 0; i < nrows; i++) {
SCM new_row;
SCM head = SCM_EOL, tail;
MYSQL_ROW row = mysql_fetch_row(result);
if (!row)
break;
for (j = 0; j < nfields; j++) {
SCM new_elt;
SCM_NEWCELL(new_elt);
SCM_SETCAR(new_elt, scm_makfrom0str(row[j]));
if (head == SCM_EOL)
head = new_elt;
else
SCM_SETCDR(tail, new_elt);
tail = new_elt;
}
if (head != SCM_EOL)
SCM_SETCDR(tail, SCM_EOL);
SCM_NEWCELL(new_row);
SCM_SETCAR(new_row, head);
if (row_head == SCM_EOL)
row_head = new_row;
else
SCM_SETCDR(row_tail, new_row);
row_tail = new_row;
}
if (row_head != SCM_EOL)
SCM_SETCDR(row_tail, SCM_EOL);
cell = row_head;
mysql_free_result(result);
} else { /* should it have returned something? */
if (mysql_field_count(mysql) == 0) {
cell = scm_makenum(mysql_affected_rows(mysql));
} else { /* mysql_store_result() should have returned data */
scm_misc_error("s_mysql_query",
"MySQL error: ~S",
SCM_LIST1(scm_makfrom0str(mysql_error(mysql))));
}
}
return cell;
}
void
s_mysql_close(struct sql_connect *conn)
{
if (conn->data)
mysql_close(conn->data);
conn->data = NULL;
}
struct sql_iface mysql_iface = {
"mysql",
s_mysql_mark,
s_mysql_free,
s_mysql_connect,
s_mysql_close,
s_mysql_query,
};
|
