mirror of
https://github.com/prometheus/prometheus.git
synced 2024-11-12 00:24:04 -08:00
119 lines
2.8 KiB
Go
119 lines
2.8 KiB
Go
/*
|
|
Copyright 2014 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package diff
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"strings"
|
|
"text/tabwriter"
|
|
|
|
"github.com/davecgh/go-spew/spew"
|
|
"github.com/google/go-cmp/cmp"
|
|
)
|
|
|
|
// StringDiff diffs a and b and returns a human readable diff.
|
|
func StringDiff(a, b string) string {
|
|
ba := []byte(a)
|
|
bb := []byte(b)
|
|
out := []byte{}
|
|
i := 0
|
|
for ; i < len(ba) && i < len(bb); i++ {
|
|
if ba[i] != bb[i] {
|
|
break
|
|
}
|
|
out = append(out, ba[i])
|
|
}
|
|
out = append(out, []byte("\n\nA: ")...)
|
|
out = append(out, ba[i:]...)
|
|
out = append(out, []byte("\n\nB: ")...)
|
|
out = append(out, bb[i:]...)
|
|
out = append(out, []byte("\n\n")...)
|
|
return string(out)
|
|
}
|
|
|
|
func legacyDiff(a, b interface{}) string {
|
|
return cmp.Diff(a, b)
|
|
}
|
|
|
|
// ObjectDiff prints the diff of two go objects and fails if the objects
|
|
// contain unhandled unexported fields.
|
|
// DEPRECATED: use github.com/google/go-cmp/cmp.Diff
|
|
func ObjectDiff(a, b interface{}) string {
|
|
return legacyDiff(a, b)
|
|
}
|
|
|
|
// ObjectGoPrintDiff prints the diff of two go objects and fails if the objects
|
|
// contain unhandled unexported fields.
|
|
// DEPRECATED: use github.com/google/go-cmp/cmp.Diff
|
|
func ObjectGoPrintDiff(a, b interface{}) string {
|
|
return legacyDiff(a, b)
|
|
}
|
|
|
|
// ObjectReflectDiff prints the diff of two go objects and fails if the objects
|
|
// contain unhandled unexported fields.
|
|
// DEPRECATED: use github.com/google/go-cmp/cmp.Diff
|
|
func ObjectReflectDiff(a, b interface{}) string {
|
|
return legacyDiff(a, b)
|
|
}
|
|
|
|
// ObjectGoPrintSideBySide prints a and b as textual dumps side by side,
|
|
// enabling easy visual scanning for mismatches.
|
|
func ObjectGoPrintSideBySide(a, b interface{}) string {
|
|
s := spew.ConfigState{
|
|
Indent: " ",
|
|
// Extra deep spew.
|
|
DisableMethods: true,
|
|
}
|
|
sA := s.Sdump(a)
|
|
sB := s.Sdump(b)
|
|
|
|
linesA := strings.Split(sA, "\n")
|
|
linesB := strings.Split(sB, "\n")
|
|
width := 0
|
|
for _, s := range linesA {
|
|
l := len(s)
|
|
if l > width {
|
|
width = l
|
|
}
|
|
}
|
|
for _, s := range linesB {
|
|
l := len(s)
|
|
if l > width {
|
|
width = l
|
|
}
|
|
}
|
|
buf := &bytes.Buffer{}
|
|
w := tabwriter.NewWriter(buf, width, 0, 1, ' ', 0)
|
|
max := len(linesA)
|
|
if len(linesB) > max {
|
|
max = len(linesB)
|
|
}
|
|
for i := 0; i < max; i++ {
|
|
var a, b string
|
|
if i < len(linesA) {
|
|
a = linesA[i]
|
|
}
|
|
if i < len(linesB) {
|
|
b = linesB[i]
|
|
}
|
|
fmt.Fprintf(w, "%s\t%s\n", a, b)
|
|
}
|
|
w.Flush()
|
|
return buf.String()
|
|
}
|