func testDiffFiles(t *testing.T, old, new string, level int) diff.Data {
diffs, e := diff.Files(old, new, level)
if e != nil {
t.Fatal(e)
}
return diffs
}
/*
Diff given two list of old and new revision id, compare each of them and save
their diff (deletions and additions as single string joined by " ") on dataset.
The revision text will be looked up in directory `Dir` and with extension
".txt".
*/
func Diff(oldids, newids []string, ext string) (
tabula.DatasetInterface,
error,
) {
diffset := &tabula.Dataset{
Mode: tabula.DatasetModeColumns,
}
colAdds := tabula.NewColumn(tabula.TString, "additions")
colDels := tabula.NewColumn(tabula.TString, "deletions")
// Get minimum length
minlen := len(oldids)
newlen := len(newids)
if newlen < minlen {
minlen = newlen
}
for x := 0; x < minlen; x++ {
oldrevid := Dir + "/" + oldids[x] + ext
newrevid := Dir + "/" + newids[x] + ext
diffs, e := diff.Files(oldrevid, newrevid, diff.LevelWords)
if e != nil {
return nil, e
}
dels := diffs.GetAllDels()
delstr := dels.Join(" ")
delrec, e := tabula.NewRecordBy(delstr, tabula.TString)
if e != nil {
return nil, e
}
adds := diffs.GetAllAdds()
addstr := adds.Join(" ")
addrec, e := tabula.NewRecordBy(addstr, tabula.TString)
if e != nil {
return nil, e
}
colDels.PushBack(delrec)
colAdds.PushBack(addrec)
}
diffset.PushColumn(*colDels)
diffset.PushColumn(*colAdds)
return diffset, nil
}