/
xorm.go
179 lines (143 loc) · 3.44 KB
/
xorm.go
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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
// Copyright 2017 The Xorm Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build go1.1
// +build go1.1
package main
import (
"fmt"
"io"
"os"
"runtime"
"strings"
"sync"
"text/template"
"unicode"
"unicode/utf8"
)
// Test that go1.1 tag above is included in builds. main.go refers to this definition.
const go11tag = true
const version = "0.3.0324"
var supportedDrivers = map[string]string{
"mysql": "github.com/go-sql-driver/mysql",
"mymysql": "github.com/ziutek/mymysql/godrv",
"postgres": "github.com/lib/pq",
"mssql": "github.com/denisenkom/go-mssqldb",
}
// Commands lists the available commands and help topics.
// The order here is the order in which they are printed by 'gopm help'.
var commands = []*Command{
CmdReverse,
CmdShell,
CmdDump,
CmdDriver,
CmdSource,
}
func init() {
runtime.GOMAXPROCS(runtime.NumCPU())
}
func main() {
// Check length of arguments.
args := os.Args[1:]
if len(args) < 1 {
usage()
return
}
// Show help documentation.
if args[0] == "help" {
help(args[1:])
return
}
// Check commands and run.
for _, comm := range commands {
if comm.Name() == args[0] && comm.Run != nil {
comm.Run(comm, args[1:])
exit()
return
}
}
fmt.Fprintf(os.Stderr, "xorm: unknown subcommand %q\nRun 'xorm help' for usage.\n", args[0])
setExitStatus(2)
exit()
}
var exitStatus = 0
var exitMu sync.Mutex
func setExitStatus(n int) {
exitMu.Lock()
if exitStatus < n {
exitStatus = n
}
exitMu.Unlock()
}
var usageTemplate = `xorm is a database tool based xorm package.
Version:
` + version + `
Usage:
xorm command [arguments]
The commands are:
{{range .}}{{if .Runnable}}
{{.Name | printf "%-11s"}} {{.Short}}{{end}}{{end}}
Use "xorm help [command]" for more information about a command.
Additional help topics:
{{range .}}{{if not .Runnable}}
{{.Name | printf "%-11s"}} {{.Short}}{{end}}{{end}}
Use "xorm help [topic]" for more information about that topic.
`
var helpTemplate = `{{if .Runnable}}usage: xorm {{.UsageLine}}
{{end}}{{.Long | trim}}
`
// tmpl executes the given template text on data, writing the result to w.
func tmpl(w io.Writer, text string, data interface{}) {
t := template.New("top")
t.Funcs(template.FuncMap{"trim": strings.TrimSpace, "capitalize": capitalize})
template.Must(t.Parse(text))
if err := t.Execute(w, data); err != nil {
panic(err)
}
}
func capitalize(s string) string {
if s == "" {
return s
}
r, n := utf8.DecodeRuneInString(s)
return string(unicode.ToTitle(r)) + s[n:]
}
func printUsage(w io.Writer) {
tmpl(w, usageTemplate, commands)
}
func usage() {
printUsage(os.Stderr)
os.Exit(2)
}
// help implements the 'help' command.
func help(args []string) {
if len(args) == 0 {
printUsage(os.Stdout)
// not exit 2: succeeded at 'gopm help'.
return
}
if len(args) != 1 {
fmt.Fprintf(os.Stderr, "usage: xorm help command\n\nToo many arguments given.\n")
os.Exit(2) // failed at 'gopm help'
}
arg := args[0]
for _, cmd := range commands {
if cmd.Name() == arg {
tmpl(os.Stdout, helpTemplate, cmd)
// not exit 2: succeeded at 'gopm help cmd'.
return
}
}
fmt.Fprintf(os.Stderr, "Unknown help topic %#q. Run 'xorm help'.\n", arg)
os.Exit(2) // failed at 'gopm help cmd'
}
var atexitFuncs []func()
func atexit(f func()) {
atexitFuncs = append(atexitFuncs, f)
}
func exit() {
for _, f := range atexitFuncs {
f()
}
os.Exit(exitStatus)
}