mirror of
https://github.com/superseriousbusiness/gotosocial
synced 2024-12-12 08:36:31 +01:00
163 lines
3.6 KiB
Go
163 lines
3.6 KiB
Go
// Copyright 2015 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package objabi
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"io"
|
|
"io/ioutil"
|
|
"log"
|
|
"os"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
func Flagcount(name, usage string, val *int) {
|
|
flag.Var((*count)(val), name, usage)
|
|
}
|
|
|
|
func Flagfn1(name, usage string, f func(string)) {
|
|
flag.Var(fn1(f), name, usage)
|
|
}
|
|
|
|
func Flagprint(w io.Writer) {
|
|
flag.CommandLine.SetOutput(w)
|
|
flag.PrintDefaults()
|
|
}
|
|
|
|
func Flagparse(usage func()) {
|
|
flag.Usage = usage
|
|
os.Args = expandArgs(os.Args)
|
|
flag.Parse()
|
|
}
|
|
|
|
// expandArgs expands "response files" arguments in the provided slice.
|
|
//
|
|
// A "response file" argument starts with '@' and the rest of that
|
|
// argument is a filename with CR-or-CRLF-separated arguments. Each
|
|
// argument in the named files can also contain response file
|
|
// arguments. See Issue 18468.
|
|
//
|
|
// The returned slice 'out' aliases 'in' iff the input did not contain
|
|
// any response file arguments.
|
|
//
|
|
// TODO: handle relative paths of recursive expansions in different directories?
|
|
// Is there a spec for this? Are relative paths allowed?
|
|
func expandArgs(in []string) (out []string) {
|
|
// out is nil until we see a "@" argument.
|
|
for i, s := range in {
|
|
if strings.HasPrefix(s, "@") {
|
|
if out == nil {
|
|
out = make([]string, 0, len(in)*2)
|
|
out = append(out, in[:i]...)
|
|
}
|
|
slurp, err := ioutil.ReadFile(s[1:])
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
args := strings.Split(strings.TrimSpace(strings.Replace(string(slurp), "\r", "", -1)), "\n")
|
|
out = append(out, expandArgs(args)...)
|
|
} else if out != nil {
|
|
out = append(out, s)
|
|
}
|
|
}
|
|
if out == nil {
|
|
return in
|
|
}
|
|
return
|
|
}
|
|
|
|
func AddVersionFlag() {
|
|
flag.Var(versionFlag{}, "V", "print version and exit")
|
|
}
|
|
|
|
var buildID string // filled in by linker
|
|
|
|
type versionFlag struct{}
|
|
|
|
func (versionFlag) IsBoolFlag() bool { return true }
|
|
func (versionFlag) Get() interface{} { return nil }
|
|
func (versionFlag) String() string { return "" }
|
|
func (versionFlag) Set(s string) error {
|
|
name := os.Args[0]
|
|
name = name[strings.LastIndex(name, `/`)+1:]
|
|
name = name[strings.LastIndex(name, `\`)+1:]
|
|
name = strings.TrimSuffix(name, ".exe")
|
|
|
|
// If there's an active experiment, include that,
|
|
// to distinguish go1.10.2 with an experiment
|
|
// from go1.10.2 without an experiment.
|
|
p := Expstring()
|
|
if p == DefaultExpstring() {
|
|
p = ""
|
|
}
|
|
sep := ""
|
|
if p != "" {
|
|
sep = " "
|
|
}
|
|
|
|
// The go command invokes -V=full to get a unique identifier
|
|
// for this tool. It is assumed that the release version is sufficient
|
|
// for releases, but during development we include the full
|
|
// build ID of the binary, so that if the compiler is changed and
|
|
// rebuilt, we notice and rebuild all packages.
|
|
if s == "full" {
|
|
if strings.HasPrefix(Version, "devel") {
|
|
p += " buildID=" + buildID
|
|
}
|
|
}
|
|
|
|
fmt.Printf("%s version %s%s%s\n", name, Version, sep, p)
|
|
os.Exit(0)
|
|
return nil
|
|
}
|
|
|
|
// count is a flag.Value that is like a flag.Bool and a flag.Int.
|
|
// If used as -name, it increments the count, but -name=x sets the count.
|
|
// Used for verbose flag -v.
|
|
type count int
|
|
|
|
func (c *count) String() string {
|
|
return fmt.Sprint(int(*c))
|
|
}
|
|
|
|
func (c *count) Set(s string) error {
|
|
switch s {
|
|
case "true":
|
|
*c++
|
|
case "false":
|
|
*c = 0
|
|
default:
|
|
n, err := strconv.Atoi(s)
|
|
if err != nil {
|
|
return fmt.Errorf("invalid count %q", s)
|
|
}
|
|
*c = count(n)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (c *count) Get() interface{} {
|
|
return int(*c)
|
|
}
|
|
|
|
func (c *count) IsBoolFlag() bool {
|
|
return true
|
|
}
|
|
|
|
func (c *count) IsCountFlag() bool {
|
|
return true
|
|
}
|
|
|
|
type fn1 func(string)
|
|
|
|
func (f fn1) Set(s string) error {
|
|
f(s)
|
|
return nil
|
|
}
|
|
|
|
func (f fn1) String() string { return "" }
|