Wed, 26 Nov 2008 10:43:45 +0000
Clean up error messages for consistency.
1 | 1 | #include "dbd_mysql.h" |
2 | ||
3 | int dbd_mysql_statement_create(lua_State *L, connection_t *conn, const char *sql_query); | |
4 | ||
2 | 5 | /* |
3 | 6 | * connection,err = DBD.MySQl.New(dbname, user, password, host, port) |
2 | 7 | */ |
1 | 8 | static int connection_new(lua_State *L) { |
9 | int n = lua_gettop(L); | |
10 | ||
11 | connection_t *conn = NULL; | |
12 | ||
13 | const char *host = NULL; | |
14 | const char *user = NULL; | |
15 | const char *password = NULL; | |
16 | const char *db = NULL; | |
17 | int port = 0; | |
18 | ||
19 | const char *unix_socket = NULL; /* TODO always NULL */ | |
20 | int client_flag = 0; /* TODO always 0, set flags from options table */ | |
21 | ||
22 | /* db, user, password, host, port */ | |
23 | switch (n) { | |
24 | case 5: | |
25 | if (lua_isnil(L, 5) == 0) | |
26 | port = luaL_checkint(L, 5); | |
27 | case 4: | |
28 | if (lua_isnil(L, 4) == 0) | |
29 | host = luaL_checkstring(L, 4); | |
30 | case 3: | |
31 | if (lua_isnil(L, 3) == 0) | |
32 | password = luaL_checkstring(L, 3); | |
33 | case 2: | |
34 | if (lua_isnil(L, 2) == 0) | |
35 | user = luaL_checkstring(L, 2); | |
36 | case 1: | |
37 | if (lua_isnil(L, 1) == 0) | |
38 | db = luaL_checkstring(L, 1); | |
39 | } | |
40 | ||
41 | conn = (connection_t *)lua_newuserdata(L, sizeof(connection_t)); | |
42 | ||
43 | conn->mysql = mysql_init(NULL); | |
44 | ||
3 | 45 | if (!mysql_real_connect(conn->mysql, host, user, password, db, port, unix_socket, client_flag)) { |
1 | 46 | lua_pushnil(L); |
4 | 47 | lua_pushfstring(L, DBI_ERR_CONNECTION_FAILED, mysql_error(conn->mysql)); |
3 | 48 | return 2; |
1 | 49 | } |
50 | ||
3 | 51 | luaL_getmetatable(L, DBD_MYSQL_CONNECTION); |
52 | lua_setmetatable(L, -2); | |
53 | ||
1 | 54 | return 1; |
55 | } | |
56 | ||
2 | 57 | /* |
58 | * success = connection:close() | |
59 | */ | |
1 | 60 | static int connection_close(lua_State *L) { |
61 | connection_t *conn = (connection_t *)luaL_checkudata(L, 1, DBD_MYSQL_CONNECTION); | |
62 | int disconnect = 0; | |
63 | ||
64 | if (conn->mysql) { | |
65 | mysql_close(conn->mysql); | |
66 | disconnect = 1; | |
3 | 67 | conn->mysql = NULL; |
1 | 68 | } |
69 | ||
70 | lua_pushboolean(L, disconnect); | |
71 | return 1; | |
72 | } | |
73 | ||
2 | 74 | /* |
75 | * ok = connection:ping() | |
76 | */ | |
1 | 77 | static int connection_ping(lua_State *L) { |
78 | connection_t *conn = (connection_t *)luaL_checkudata(L, 1, DBD_MYSQL_CONNECTION); | |
79 | int err = 1; | |
80 | ||
81 | if (conn->mysql) { | |
82 | err = mysql_ping(conn->mysql); | |
83 | } | |
84 | ||
85 | lua_pushboolean(L, !err); | |
86 | return 1; | |
87 | } | |
88 | ||
2 | 89 | /* |
3 | 90 | * statement,err = connection:prepare(sql_string) |
2 | 91 | */ |
1 | 92 | static int connection_prepare(lua_State *L) { |
93 | connection_t *conn = (connection_t *)luaL_checkudata(L, 1, DBD_MYSQL_CONNECTION); | |
94 | ||
95 | if (conn->mysql) { | |
96 | return dbd_mysql_statement_create(L, conn, luaL_checkstring(L, 2)); | |
97 | } | |
98 | ||
99 | lua_pushnil(L); | |
4 | 100 | lua_pushstring(L, DBI_ERR_DB_UNAVAILABLE); |
3 | 101 | |
102 | return 2; | |
1 | 103 | } |
104 | ||
2 | 105 | /* |
106 | * __gc | |
107 | */ | |
1 | 108 | static int connection_gc(lua_State *L) { |
109 | /* always close the connection */ | |
110 | connection_close(L); | |
111 | ||
112 | return 0; | |
113 | } | |
114 | ||
2 | 115 | int dbd_mysql_connection(lua_State *L) { |
116 | static const luaL_Reg connection_methods[] = { | |
117 | {"close", connection_close}, | |
118 | {"ping", connection_ping}, | |
119 | {"prepare", connection_prepare}, | |
120 | {NULL, NULL} | |
121 | }; | |
1 | 122 | |
2 | 123 | static const luaL_Reg connection_class_methods[] = { |
124 | {"New", connection_new}, | |
125 | {NULL, NULL} | |
126 | }; | |
1 | 127 | |
128 | luaL_newmetatable(L, DBD_MYSQL_CONNECTION); | |
129 | luaL_register(L, 0, connection_methods); | |
130 | lua_pushvalue(L,-1); | |
131 | lua_setfield(L, -2, "__index"); | |
132 | ||
133 | lua_pushcfunction(L, connection_gc); | |
134 | lua_setfield(L, -2, "__gc"); | |
135 | ||
136 | luaL_register(L, DBD_MYSQL_CONNECTION, connection_class_methods); | |
137 | ||
138 | return 1; | |
139 | } | |
140 |