119 lines
2.8 KiB
V
119 lines
2.8 KiB
V
module mysql
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// if mysql.h is not in your CPATH (include path), set environment CPATH
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// export CPATH=$CPATH:/usr/include/mysql
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// or include -cflags flag to v compiler
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// v -cflags '-I/usr/include/mysql' program.v
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#flag -lmysqlclient
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#flag linux -I/usr/include/mysql
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#include <mysql.h>
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pub struct DB {
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conn &C.MYSQL
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}
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pub struct Result {
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result &C.MYSQL_RES
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}
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pub struct Row {
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pub mut:
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vals []string
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}
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struct C.MYSQL
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struct C.MYSQL_RES
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fn C.mysql_init(mysql &C.MYSQL) &C.MYSQL
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fn C.mysql_real_connect(mysql &C.MYSQL, host byteptr, user byteptr, passwd byteptr, db byteptr, port u32, unix_socket byteptr, clientflag u64) &C.MYSQL
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fn C.mysql_query(mysql &C.MYSQL, q byteptr) int
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fn C.mysql_select_db(mysql &C.MYSQL, db byteptr) int
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fn C.mysql_error(mysql &C.MYSQL) byteptr
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fn C.mysql_errno(mysql &C.MYSQL) int
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fn C.mysql_num_fields(res &C.MYSQL_RES) int
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fn C.mysql_store_result(mysql &C.MYSQL) &C.MYSQL_RES
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fn C.mysql_fetch_row(res &C.MYSQL_RES) &byteptr
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fn C.mysql_free_result(res &C.MYSQL_RES)
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fn C.mysql_real_escape_string_quote(mysql &C.MYSQL, to byteptr, from byteptr, len u64, quote byte) u64
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fn C.mysql_close(sock &C.MYSQL)
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pub fn connect(server, user, passwd, dbname string) ?DB {
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conn := C.mysql_init(0)
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if isnil(conn) {
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return error_with_code(get_error_msg(conn), get_errno(conn))
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}
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conn2 := C.mysql_real_connect(conn, server.str, user.str, passwd.str, dbname.str, 0, 0, 0)
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if isnil(conn2) {
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return error_with_code(get_error_msg(conn), get_errno(conn))
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}
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return DB {conn: conn2}
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}
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pub fn (db DB) query(q string) ?Result {
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ret := C.mysql_query(db.conn, q.str)
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if ret != 0 {
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return error_with_code(get_error_msg(db.conn), get_errno(db.conn))
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}
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res := C.mysql_store_result(db.conn)
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return Result {result: res}
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}
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pub fn (db DB) escape_string(s string) string {
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len := strlen(s.str)
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to := malloc(2 * len + 1)
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quote := byte(39) // single quote
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C.mysql_real_escape_string_quote(db.conn, to, s.str, len, quote)
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return string(to)
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}
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pub fn (db DB) select_db(dbname string) ?bool {
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ret := mysql_select_db(db.conn, dbname.str)
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if ret != 0 {
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return error_with_code(get_error_msg(db.conn), get_errno(db.conn))
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}
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return true
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}
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pub fn (db DB) close() {
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C.mysql_close(db.conn)
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}
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pub fn (r Result) fetch_row() &byteptr {
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return C.mysql_fetch_row(r.result)
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}
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pub fn (r Result) num_fields() int {
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return C.mysql_num_fields(r.result)
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}
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pub fn (r Result) rows() []Row {
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mut rows := []Row
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nr_cols := r.num_fields()
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for rr := r.fetch_row(); rr; rr = r.fetch_row() {
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mut row := Row{}
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for i := 0; i < nr_cols; i++ {
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if rr[i] == 0 {
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row.vals << ''
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} else {
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row.vals << string(rr[i])
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}
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}
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rows << row
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}
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return rows
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}
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pub fn (r Result) free() {
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C.mysql_free_result(r.result)
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}
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fn get_error_msg(conn &C.MYSQL) string {
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return string(C.mysql_error(conn))
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}
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fn get_errno(conn &C.MYSQL) int {
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return C.mysql_errno(conn)
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}
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