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util/codegen: permit running in directories without copyright headers

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It broke in our corp repo that lacks copyright headers.

Change-Id: Iafc433e6b6affe83b45477899455527658dc4f12
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2023-01-03 10:59:00 -08:00 committed by Brad Fitzpatrick
parent 91e64ca74f
commit b2b8e62476
1 changed files with 10 additions and 7 deletions
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17
util/codegen/codegen.go
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@ -58,11 +58,13 @@ func HasNoClone(structTag string) bool {
return false return false
} }
const header = `// Copyright (c) %d Tailscale Inc & AUTHORS All rights reserved. const copyrightHeader = `// Copyright (c) %d Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style // Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file. // license that can be found in the LICENSE file.
// Code generated by %v; DO NOT EDIT. `
const genAndPackageHeader = `// Code generated by %v; DO NOT EDIT.
package %s package %s
` `
@ -109,7 +111,10 @@ func (it *ImportTracker) Write(w io.Writer) {
} }
func writeHeader(w io.Writer, tool, pkg string, copyrightYear int) { func writeHeader(w io.Writer, tool, pkg string, copyrightYear int) {
fmt.Fprintf(w, header, copyrightYear, tool, pkg) if copyrightYear != 0 {
fmt.Fprintf(w, copyrightHeader, copyrightYear)
}
fmt.Fprintf(w, genAndPackageHeader, tool, pkg)
} }
// WritePackageFile adds a file with the provided imports and contents to package. // WritePackageFile adds a file with the provided imports and contents to package.
@ -287,7 +292,8 @@ func CopyrightYear(dir string) (year int) {
Files: Files:
for _, f := range files { for _, f := range files {
name := f.Name() name := f.Name()
if f.IsDir() || if !f.Type().IsRegular() ||
strings.HasPrefix(name, ".") || // includes emacs noise
!strings.HasSuffix(name, ".go") || !strings.HasSuffix(name, ".go") ||
strings.HasSuffix(name, "_clone.go") || strings.HasSuffix(name, "_clone.go") ||
strings.HasSuffix(name, "_view.go") || strings.HasSuffix(name, "_view.go") ||
@ -312,8 +318,5 @@ Files:
} }
} }
} }
if year == 0 {
panic("no Copyright line found in any *.go file in " + dir)
}
return year return year
} }