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119 lines
2.3 KiB
119 lines
2.3 KiB
// Copyright 2015 The Xorm Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package xorm
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import (
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"errors"
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"fmt"
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"net/url"
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"sort"
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"strings"
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"github.com/go-xorm/core"
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)
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type pqDriver struct {
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}
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type values map[string]string
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func (vs values) Set(k, v string) {
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vs[k] = v
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}
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func (vs values) Get(k string) (v string) {
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return vs[k]
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}
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func errorf(s string, args ...interface{}) {
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panic(fmt.Errorf("pq: %s", fmt.Sprintf(s, args...)))
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}
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func parseURL(connstr string) (string, error) {
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u, err := url.Parse(connstr)
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if err != nil {
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return "", err
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}
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if u.Scheme != "postgresql" && u.Scheme != "postgres" {
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return "", fmt.Errorf("invalid connection protocol: %s", u.Scheme)
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}
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var kvs []string
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escaper := strings.NewReplacer(` `, `\ `, `'`, `\'`, `\`, `\\`)
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accrue := func(k, v string) {
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if v != "" {
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kvs = append(kvs, k+"="+escaper.Replace(v))
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}
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}
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if u.User != nil {
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v := u.User.Username()
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accrue("user", v)
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v, _ = u.User.Password()
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accrue("password", v)
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}
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i := strings.Index(u.Host, ":")
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if i < 0 {
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accrue("host", u.Host)
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} else {
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accrue("host", u.Host[:i])
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accrue("port", u.Host[i+1:])
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}
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if u.Path != "" {
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accrue("dbname", u.Path[1:])
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}
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q := u.Query()
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for k := range q {
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accrue(k, q.Get(k))
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}
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sort.Strings(kvs) // Makes testing easier (not a performance concern)
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return strings.Join(kvs, " "), nil
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}
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func parseOpts(name string, o values) {
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if len(name) == 0 {
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return
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}
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name = strings.TrimSpace(name)
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ps := strings.Split(name, " ")
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for _, p := range ps {
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kv := strings.Split(p, "=")
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if len(kv) < 2 {
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errorf("invalid option: %q", p)
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}
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o.Set(kv[0], kv[1])
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}
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}
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func (p *pqDriver) Parse(driverName, dataSourceName string) (*core.Uri, error) {
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db := &core.Uri{DbType: core.POSTGRES}
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o := make(values)
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var err error
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if strings.HasPrefix(dataSourceName, "postgresql://") || strings.HasPrefix(dataSourceName, "postgres://") {
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dataSourceName, err = parseURL(dataSourceName)
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if err != nil {
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return nil, err
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}
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}
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parseOpts(dataSourceName, o)
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db.DbName = o.Get("dbname")
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if db.DbName == "" {
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return nil, errors.New("dbname is empty")
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}
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/*db.Schema = o.Get("schema")
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if len(db.Schema) == 0 {
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db.Schema = "public"
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}*/
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return db, nil
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}
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