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60 lines
1.3 KiB
60 lines
1.3 KiB
/* |
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Copyright 2017 The Kubernetes Authors. |
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Licensed under the Apache License, Version 2.0 (the "License"); |
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you may not use this file except in compliance with the License. |
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You may obtain a copy of the License at |
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http://www.apache.org/licenses/LICENSE-2.0 |
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Unless required by applicable law or agreed to in writing, software |
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distributed under the License is distributed on an "AS IS" BASIS, |
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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See the License for the specific language governing permissions and |
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limitations under the License. |
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*/ |
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package main |
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import ( |
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"io/ioutil" |
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"os" |
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"os/exec" |
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) |
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// Diff prints the unified diff of the two provided byte slices |
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// using the unix diff command. |
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func Diff(left, right []byte) error { |
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lf, err := ioutil.TempFile("/tmp", "actual-file-") |
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if err != nil { |
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return err |
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} |
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defer lf.Close() |
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defer os.Remove(lf.Name()) |
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rf, err := ioutil.TempFile("/tmp", "expected-file-") |
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if err != nil { |
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return err |
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} |
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defer rf.Close() |
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defer os.Remove(rf.Name()) |
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_, err = lf.Write(left) |
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if err != nil { |
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return err |
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} |
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lf.Close() |
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_, err = rf.Write(right) |
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if err != nil { |
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return err |
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} |
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rf.Close() |
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cmd := exec.Command("/usr/bin/diff", "-u", lf.Name(), rf.Name()) |
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cmd.Stdout = os.Stdout |
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cmd.Stderr = os.Stderr |
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cmd.Run() |
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return nil |
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}
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