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Fix: now highlights in diff view are getting the correct lines.

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This commit is contained in:
Andrey Nering 2016-01-08 10:50:25 -02:00
parent bf11ad19ea
commit 697b0e2aba
2 changed files with 60 additions and 23 deletions
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40
models/git_diff.go
View File

@ -77,28 +77,24 @@ func diffToHtml(diffRecord []diffmatchpatch.Diff, lineType DiffLineType) templat
return template.HTML(result)
}
func (diffSection *DiffSection) GetLeftLine(idx int, sliceIdx int) *DiffLine {
for i, diffLine := range diffSection.Lines {
if diffLine.LeftIdx == idx && diffLine.RightIdx == 0 {
// ignore if the lines are too far from each other
if i > sliceIdx-5 && i < sliceIdx+5 {
return diffLine
} else {
return nil
}
}
}
return nil
// get an specific line by type (add or del) and file line number
func (diffSection *DiffSection) GetLine(lineType DiffLineType, idx int) *DiffLine {
difference := 0
for _, diffLine := range diffSection.Lines {
if diffLine.Type == DIFF_LINE_PLAIN {
// get the difference of line numbers between ADD and DEL versions
difference = diffLine.RightIdx - diffLine.LeftIdx
continue
}
func (diffSection *DiffSection) GetRightLine(idx int, sliceIdx int) *DiffLine {
for i, diffLine := range diffSection.Lines {
if diffLine.RightIdx == idx && diffLine.LeftIdx == 0 {
// ignore if the lines are too far from each other
if i > sliceIdx-5 && i < sliceIdx+5 {
if lineType == DIFF_LINE_DEL {
if diffLine.RightIdx == 0 && diffLine.LeftIdx == idx - difference {
return diffLine
}
} else if lineType == DIFF_LINE_ADD {
if diffLine.LeftIdx == 0 && diffLine.RightIdx == idx + difference {
return diffLine
} else {
return nil
}
}
}
@ -107,7 +103,7 @@ func (diffSection *DiffSection) GetRightLine(idx int, sliceIdx int) *DiffLine {
// computes diff of each diff line and set the HTML on diffLine.ParsedContent
func (diffSection *DiffSection) ComputeLinesDiff() {
for i, diffLine := range diffSection.Lines {
for _, diffLine := range diffSection.Lines {
var compareDiffLine *DiffLine
var diff1, diff2 string
@ -121,14 +117,14 @@ func (diffSection *DiffSection) ComputeLinesDiff() {
// try to find equivalent diff line. ignore, otherwise
if diffLine.Type == DIFF_LINE_ADD {
compareDiffLine = diffSection.GetLeftLine(diffLine.RightIdx, i)
compareDiffLine = diffSection.GetLine(DIFF_LINE_DEL, diffLine.RightIdx)
if compareDiffLine == nil {
continue
}
diff1 = compareDiffLine.Content
diff2 = diffLine.Content
} else {
compareDiffLine = diffSection.GetRightLine(diffLine.LeftIdx, i)
compareDiffLine = diffSection.GetLine(DIFF_LINE_ADD, diffLine.LeftIdx)
if compareDiffLine == nil {
continue
}

41
models/git_diff_test.go
View File

@ -12,6 +12,12 @@ func assertEqual(t *testing.T, s1 string, s2 template.HTML) {
}
}
func assertLineEqual(t *testing.T, d1 *DiffLine, d2 *DiffLine) {
if d1 != d2 {
t.Errorf("%v should be equal %v", d1, d2)
}
}
func TestDiffToHtml(t *testing.T) {
assertEqual(t, "foo <span class=\"added-code\">bar</span> biz", diffToHtml([]dmp.Diff{
dmp.Diff{dmp.DiffEqual, "foo "},
@ -27,3 +33,38 @@ func TestDiffToHtml(t *testing.T) {
dmp.Diff{dmp.DiffEqual, " biz"},
}, DIFF_LINE_DEL))
}
// test if GetLine is return the correct lines
func TestGetLine(t *testing.T) {
ds := DiffSection{Lines: []*DiffLine{
&DiffLine{LeftIdx: 28, RightIdx: 28, Type: DIFF_LINE_PLAIN},
&DiffLine{LeftIdx: 29, RightIdx: 29, Type: DIFF_LINE_PLAIN},
&DiffLine{LeftIdx: 30, RightIdx: 30, Type: DIFF_LINE_PLAIN},
&DiffLine{LeftIdx: 31, RightIdx: 0, Type: DIFF_LINE_DEL},
&DiffLine{LeftIdx: 0, RightIdx: 31, Type: DIFF_LINE_ADD},
&DiffLine{LeftIdx: 0, RightIdx: 32, Type: DIFF_LINE_ADD},
&DiffLine{LeftIdx: 32, RightIdx: 33, Type: DIFF_LINE_PLAIN},
&DiffLine{LeftIdx: 33, RightIdx: 0, Type: DIFF_LINE_DEL},
&DiffLine{LeftIdx: 34, RightIdx: 0, Type: DIFF_LINE_DEL},
&DiffLine{LeftIdx: 35, RightIdx: 0, Type: DIFF_LINE_DEL},
&DiffLine{LeftIdx: 36, RightIdx: 0, Type: DIFF_LINE_DEL},
&DiffLine{LeftIdx: 0, RightIdx: 34, Type: DIFF_LINE_ADD},
&DiffLine{LeftIdx: 0, RightIdx: 35, Type: DIFF_LINE_ADD},
&DiffLine{LeftIdx: 0, RightIdx: 36, Type: DIFF_LINE_ADD},
&DiffLine{LeftIdx: 0, RightIdx: 37, Type: DIFF_LINE_ADD},
&DiffLine{LeftIdx: 37, RightIdx: 38, Type: DIFF_LINE_PLAIN},
&DiffLine{LeftIdx: 38, RightIdx: 39, Type: DIFF_LINE_PLAIN},
}}
assertLineEqual(t, ds.GetLine(DIFF_LINE_ADD, 31), ds.Lines[4])
assertLineEqual(t, ds.GetLine(DIFF_LINE_DEL, 31), ds.Lines[3])
assertLineEqual(t, ds.GetLine(DIFF_LINE_ADD, 33), ds.Lines[11])
assertLineEqual(t, ds.GetLine(DIFF_LINE_ADD, 34), ds.Lines[12])
assertLineEqual(t, ds.GetLine(DIFF_LINE_ADD, 35), ds.Lines[13])
assertLineEqual(t, ds.GetLine(DIFF_LINE_ADD, 36), ds.Lines[14])
assertLineEqual(t, ds.GetLine(DIFF_LINE_DEL, 34), ds.Lines[7])
assertLineEqual(t, ds.GetLine(DIFF_LINE_DEL, 35), ds.Lines[8])
assertLineEqual(t, ds.GetLine(DIFF_LINE_DEL, 36), ds.Lines[9])
assertLineEqual(t, ds.GetLine(DIFF_LINE_DEL, 37), ds.Lines[10])
}