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cmd/cloner: emit go:generate pragmas (#3082) 

Emit a go:generate pragma with the full set of flags passed to cloner.
This allows the user to simply run "go generate" at the location
of the generate file to reproduce the file.

Signed-off-by: Joe Tsai <joetsai@digital-static.net>
This commit is contained in:
Joe Tsai 2021-10-14 12:25:55 -07:00 committed by GitHub
parent 676fb458c3
commit 2fa004a2a0
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 16 additions and 3 deletions
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19
cmd/cloner/cloner.go
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@ -95,7 +95,20 @@ func main() {
}
contents := new(bytes.Buffer)
fmt.Fprintf(contents, header, *flagTypes, pkg.Name)
var flagArgs []string
if *flagTypes != "" {
flagArgs = append(flagArgs, "-type="+*flagTypes)
}
if *flagOutput != "" {
flagArgs = append(flagArgs, "-output="+*flagOutput)
}
if *flagBuildTags != "" {
flagArgs = append(flagArgs, "-tags="+*flagBuildTags)
}
if *flagCloneFunc {
flagArgs = append(flagArgs, "-clonefunc")
}
fmt.Fprintf(contents, header, strings.Join(flagArgs, " "), pkg.Name)
fmt.Fprintf(contents, "import (\n")
for s := range imports {
fmt.Fprintf(contents, "\t%q\n", s)
@ -117,8 +130,8 @@ const header = `// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserve
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Code generated by the following command; DO NOT EDIT.
// tailscale.com/cmd/cloner -type %s
// Code generated by tailscale.com/cmd/cloner; DO NOT EDIT.
//go:generate go run tailscale.com/cmd/cloner %s
package %s