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Change reading order of tailfile

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change reading order from beginning at the end to beginning at a buffer start
added intergration tests for boundary cases
Removed whitespace
Signed-off-by: Shayne Wang <shaynexwang@gmail.com>
This commit is contained in:
Shayne Wang 2016-11-09 19:16:47 -08:00
parent d8a7b13cd6
commit 63904eb674
2 changed files with 13 additions and 7 deletions
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2
pkg/tailfile/tailfile.go
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@ -44,7 +44,7 @@ func TailFile(f io.ReadSeeker, n int) ([][]byte, error) {
break
} else {
b = make([]byte, blockSize)
if _, err := f.Seek(step, os.SEEK_END); err != nil {
if _, err := f.Seek(left, os.SEEK_SET); err != nil {
return nil, err
}
if _, err := f.Read(b); err != nil {