86 lines
1.9 KiB
Go
86 lines
1.9 KiB
Go
// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved.
|
|
//
|
|
// This Source Code Form is subject to the terms of the Mozilla Public
|
|
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
// You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
|
|
package mysql
|
|
|
|
import (
|
|
"errors"
|
|
"strings"
|
|
)
|
|
|
|
// parseDSN parses the DSN string to a config
|
|
func parseDSN(dsn string) (string, error) {
|
|
//var user, passwd string
|
|
var addr, net string
|
|
|
|
// [user[:password]@][net[(addr)]]/dbname[?param1=value1¶mN=valueN]
|
|
// Find the last '/' (since the password or the net addr might contain a '/')
|
|
for i := len(dsn) - 1; i >= 0; i-- {
|
|
if dsn[i] == '/' {
|
|
var j, k int
|
|
|
|
// left part is empty if i <= 0
|
|
if i > 0 {
|
|
// [username[:password]@][protocol[(address)]]
|
|
// Find the last '@' in dsn[:i]
|
|
for j = i; j >= 0; j-- {
|
|
if dsn[j] == '@' {
|
|
// username[:password]
|
|
// Find the first ':' in dsn[:j]
|
|
for k = 0; k < j; k++ {
|
|
if dsn[k] == ':' {
|
|
//passwd = dsn[k+1 : j]
|
|
break
|
|
}
|
|
}
|
|
//user = dsn[:k]
|
|
|
|
break
|
|
}
|
|
}
|
|
|
|
// [protocol[(address)]]
|
|
// Find the first '(' in dsn[j+1:i]
|
|
for k = j + 1; k < i; k++ {
|
|
if dsn[k] == '(' {
|
|
// dsn[i-1] must be == ')' if an address is specified
|
|
if dsn[i-1] != ')' {
|
|
if strings.ContainsRune(dsn[k+1:i], ')') {
|
|
return "", errors.New("Invalid DSN unescaped")
|
|
}
|
|
return "", errors.New("Invalid DSN Addr")
|
|
}
|
|
addr = dsn[k+1 : i-1]
|
|
break
|
|
}
|
|
}
|
|
net = dsn[j+1 : k]
|
|
}
|
|
|
|
break
|
|
}
|
|
}
|
|
|
|
// Set default network if empty
|
|
if net == "" {
|
|
net = "tcp"
|
|
}
|
|
|
|
// Set default address if empty
|
|
if addr == "" {
|
|
switch net {
|
|
case "tcp":
|
|
addr = "127.0.0.1:3306"
|
|
case "unix":
|
|
addr = "/tmp/mysql.sock"
|
|
default:
|
|
return "", errors.New("Default addr for network '" + net + "' unknown")
|
|
}
|
|
}
|
|
|
|
return addr, nil
|
|
}
|