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build: Trivial perf improvement of shouldRebuildAssets

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This commit is contained in:
Jakob Borg 2016-10-08 17:34:07 +09:00
parent ce3e117976
commit b49df09fec
1 changed files with 5 additions and 3 deletions
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8
build.go
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@ -13,6 +13,7 @@ import (
"archive/zip"
"bytes"
"compress/gzip"
"errors"
"flag"
"fmt"
"io"
@ -572,14 +573,15 @@ func shouldRebuildAssets(target, srcdir string) bool {
// so we should rebuild it.
currentBuild := info.ModTime()
assetsAreNewer := false
stop := errors.New("no need to iterate further")
filepath.Walk(srcdir, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if assetsAreNewer {
return nil
if info.ModTime().After(currentBuild) {
assetsAreNewer = true
return stop
}
assetsAreNewer = info.ModTime().After(currentBuild)
return nil
})