Prevent NPE in CSV diff rendering when column removed (#17018) (#17377)

Backport of #17018

Fixes #16837 if a column is deleted.
This commit is contained in:
Richard Mahn 2021-10-20 14:55:34 -06:00 committed by GitHub
parent 79f0b1a50b
commit befb6bea22
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
7 changed files with 355 additions and 140 deletions

View file

@ -32,6 +32,9 @@ func CreateReaderAndGuessDelimiter(rd io.Reader) (*stdcsv.Reader, error) {
var data = make([]byte, 1e4) var data = make([]byte, 1e4)
size, err := rd.Read(data) size, err := rd.Read(data)
if err != nil { if err != nil {
if err == io.EOF {
return CreateReader(bytes.NewReader([]byte{}), rune(',')), nil
}
return nil, err return nil, err
} }

View file

@ -21,10 +21,12 @@ type TableDiffCellType uint8
// TableDiffCellType possible values. // TableDiffCellType possible values.
const ( const (
TableDiffCellEqual TableDiffCellType = iota + 1 TableDiffCellUnchanged TableDiffCellType = iota + 1
TableDiffCellChanged TableDiffCellChanged
TableDiffCellAdd TableDiffCellAdd
TableDiffCellDel TableDiffCellDel
TableDiffCellMovedUnchanged
TableDiffCellMovedChanged
) )
// TableDiffCell represents a cell of a TableDiffRow // TableDiffCell represents a cell of a TableDiffRow
@ -53,6 +55,9 @@ type csvReader struct {
eof bool eof bool
} }
// ErrorUndefinedCell is for when a row, column coordinates do not exist in the CSV
var ErrorUndefinedCell = errors.New("undefined cell")
// createCsvReader creates a csvReader and fills the buffer // createCsvReader creates a csvReader and fills the buffer
func createCsvReader(reader *csv.Reader, bufferRowCount int) (*csvReader, error) { func createCsvReader(reader *csv.Reader, bufferRowCount int) (*csvReader, error) {
csv := &csvReader{reader: reader} csv := &csvReader{reader: reader}
@ -70,7 +75,7 @@ func createCsvReader(reader *csv.Reader, bufferRowCount int) (*csvReader, error)
// GetRow gets a row from the buffer if present or advances the reader to the requested row. On the end of the file only nil gets returned. // GetRow gets a row from the buffer if present or advances the reader to the requested row. On the end of the file only nil gets returned.
func (csv *csvReader) GetRow(row int) ([]string, error) { func (csv *csvReader) GetRow(row int) ([]string, error) {
if row < len(csv.buffer) { if row < len(csv.buffer) && row >= 0 {
return csv.buffer[row], nil return csv.buffer[row], nil
} }
if csv.eof { if csv.eof {
@ -131,7 +136,11 @@ func createCsvDiffSingle(reader *csv.Reader, celltype TableDiffCellType) ([]*Tab
} }
cells := make([]*TableDiffCell, len(row)) cells := make([]*TableDiffCell, len(row))
for j := 0; j < len(row); j++ { for j := 0; j < len(row); j++ {
if celltype == TableDiffCellDel {
cells[j] = &TableDiffCell{LeftCell: row[j], Type: celltype} cells[j] = &TableDiffCell{LeftCell: row[j], Type: celltype}
} else {
cells[j] = &TableDiffCell{RightCell: row[j], Type: celltype}
}
} }
rows = append(rows, &TableDiffRow{RowIdx: i, Cells: cells}) rows = append(rows, &TableDiffRow{RowIdx: i, Cells: cells})
i++ i++
@ -141,185 +150,267 @@ func createCsvDiffSingle(reader *csv.Reader, celltype TableDiffCellType) ([]*Tab
} }
func createCsvDiff(diffFile *DiffFile, baseReader *csv.Reader, headReader *csv.Reader) ([]*TableDiffSection, error) { func createCsvDiff(diffFile *DiffFile, baseReader *csv.Reader, headReader *csv.Reader) ([]*TableDiffSection, error) {
a, err := createCsvReader(baseReader, maxRowsToInspect) // Given the baseReader and headReader, we are going to create CSV Reader for each, baseCSVReader and b respectively
baseCSVReader, err := createCsvReader(baseReader, maxRowsToInspect)
if err != nil {
return nil, err
}
headCSVReader, err := createCsvReader(headReader, maxRowsToInspect)
if err != nil { if err != nil {
return nil, err return nil, err
} }
b, err := createCsvReader(headReader, maxRowsToInspect) // Initializing the mappings of base to head (a2bColMap) and head to base (b2aColMap) columns
a2bColMap, b2aColMap := getColumnMapping(baseCSVReader, headCSVReader)
// Determines how many cols there will be in the diff table, which includes deleted columns from base and added columns to base
numDiffTableCols := len(a2bColMap) + countUnmappedColumns(b2aColMap)
if len(a2bColMap) < len(b2aColMap) {
numDiffTableCols = len(b2aColMap) + countUnmappedColumns(a2bColMap)
}
// createDiffTableRow takes the row # of the `a` line and `b` line of a diff (starting from 1), 0 if the line doesn't exist (undefined)
// in the base or head respectively.
// Returns a TableDiffRow which has the row index
createDiffTableRow := func(aLineNum int, bLineNum int) (*TableDiffRow, error) {
// diffTableCells is a row of the diff table. It will have a cells for added, deleted, changed, and unchanged content, thus either
// the same size as the head table or bigger
diffTableCells := make([]*TableDiffCell, numDiffTableCols)
var bRow *[]string
if bLineNum > 0 {
row, err := headCSVReader.GetRow(bLineNum - 1)
if err != nil { if err != nil {
return nil, err return nil, err
} }
bRow = &row
a2b, b2a := getColumnMapping(a, b)
columns := len(a2b) + countUnmappedColumns(b2a)
if len(a2b) < len(b2a) {
columns = len(b2a) + countUnmappedColumns(a2b)
}
createDiffRow := func(aline int, bline int) (*TableDiffRow, error) {
cells := make([]*TableDiffCell, columns)
if aline == 0 || bline == 0 {
var (
row []string
celltype TableDiffCellType
err error
)
if bline == 0 {
row, err = a.GetRow(aline - 1)
celltype = TableDiffCellDel
} else {
row, err = b.GetRow(bline - 1)
celltype = TableDiffCellAdd
} }
var aRow *[]string
if aLineNum > 0 {
row, err := baseCSVReader.GetRow(aLineNum - 1)
if err != nil { if err != nil {
return nil, err return nil, err
} }
if row == nil { aRow = &row
return nil, nil
} }
for i := 0; i < len(row); i++ { if aRow == nil && bRow == nil {
cells[i] = &TableDiffCell{LeftCell: row[i], Type: celltype} // No content
}
return &TableDiffRow{RowIdx: bline, Cells: cells}, nil
}
arow, err := a.GetRow(aline - 1)
if err != nil {
return nil, err
}
brow, err := b.GetRow(bline - 1)
if err != nil {
return nil, err
}
if len(arow) == 0 && len(brow) == 0 {
return nil, nil return nil, nil
} }
for i := 0; i < len(a2b); i++ { aIndex := 0 // tracks where we are in the a2bColMap
acell, _ := getCell(arow, i) bIndex := 0 // tracks where we are in the b2aColMap
if a2b[i] == unmappedColumn { colsAdded := 0 // incremented whenever we found a column was added
cells[i] = &TableDiffCell{LeftCell: acell, Type: TableDiffCellDel} colsDeleted := 0 // incrememted whenever a column was deleted
// We loop until both the aIndex and bIndex are greater than their col map, which then we are done
for aIndex < len(a2bColMap) || bIndex < len(b2aColMap) {
// Starting from where aIndex is currently pointing, we see if the map is -1 (dleeted) and if is, create column to note that, increment, and look at the next aIndex
for aIndex < len(a2bColMap) && a2bColMap[aIndex] == -1 && (bIndex >= len(b2aColMap) || aIndex <= bIndex) {
var aCell string
if aRow != nil {
if cell, err := getCell(*aRow, aIndex); err != nil {
if err != ErrorUndefinedCell {
return nil, err
}
} else { } else {
bcell, _ := getCell(brow, a2b[i]) aCell = cell
}
celltype := TableDiffCellChanged }
if acell == bcell { diffTableCells[bIndex+colsDeleted] = &TableDiffCell{LeftCell: aCell, Type: TableDiffCellDel}
celltype = TableDiffCellEqual aIndex++
colsDeleted++
} }
cells[i] = &TableDiffCell{LeftCell: acell, RightCell: bcell, Type: celltype} // aIndex is now pointing to a column that also exists in b, or is at the end of a2bColMap. If the former,
// we can just increment aIndex until it points to a -1 column or one greater than the current bIndex
for aIndex < len(a2bColMap) && a2bColMap[aIndex] != -1 {
aIndex++
} }
// Starting from where bIndex is currently pointing, we see if the map is -1 (added) and if is, create column to note that, increment, and look at the next aIndex
for bIndex < len(b2aColMap) && b2aColMap[bIndex] == -1 && (aIndex >= len(a2bColMap) || bIndex < aIndex) {
var bCell string
cellType := TableDiffCellAdd
if bRow != nil {
if cell, err := getCell(*bRow, bIndex); err != nil {
if err != ErrorUndefinedCell {
return nil, err
} }
for i := 0; i < len(b2a); i++ { } else {
if b2a[i] == unmappedColumn { bCell = cell
bcell, _ := getCell(brow, i) }
cells[i] = &TableDiffCell{LeftCell: bcell, Type: TableDiffCellAdd} } else {
cellType = TableDiffCellDel
}
diffTableCells[bIndex+colsDeleted] = &TableDiffCell{RightCell: bCell, Type: cellType}
bIndex++
colsAdded++
}
// aIndex is now pointing to a column that also exists in a, or is at the end of b2aColMap. If the former,
// we get the a col and b col values (if they exist), figure out if they are the same or not, and if the column moved, and add it to the diff table
for bIndex < len(b2aColMap) && b2aColMap[bIndex] != -1 && (aIndex >= len(a2bColMap) || bIndex < aIndex) {
var diffTableCell TableDiffCell
var aCell *string
// get the aCell value if the aRow exists
if aRow != nil {
if cell, err := getCell(*aRow, b2aColMap[bIndex]); err != nil {
if err != ErrorUndefinedCell {
return nil, err
}
} else {
aCell = &cell
diffTableCell.LeftCell = cell
}
} else {
diffTableCell.Type = TableDiffCellAdd
}
var bCell *string
// get the bCell value if the bRow exists
if bRow != nil {
if cell, err := getCell(*bRow, bIndex); err != nil {
if err != ErrorUndefinedCell {
return nil, err
}
} else {
bCell = &cell
diffTableCell.RightCell = cell
}
} else {
diffTableCell.Type = TableDiffCellDel
}
// if both a and b have a row that exists, compare the value and determine if the row has moved
if aCell != nil && bCell != nil {
moved := ((bIndex + colsDeleted) != (b2aColMap[bIndex] + colsAdded))
if *aCell != *bCell {
if moved {
diffTableCell.Type = TableDiffCellMovedChanged
} else {
diffTableCell.Type = TableDiffCellChanged
}
} else {
if moved {
diffTableCell.Type = TableDiffCellMovedUnchanged
} else {
diffTableCell.Type = TableDiffCellUnchanged
}
diffTableCell.LeftCell = ""
} }
} }
return &TableDiffRow{RowIdx: bline, Cells: cells}, nil // Add the diff column to the diff row
diffTableCells[bIndex+colsDeleted] = &diffTableCell
bIndex++
}
} }
var sections []*TableDiffSection return &TableDiffRow{RowIdx: bLineNum, Cells: diffTableCells}, nil
}
// diffTableSections are TableDiffSections which represent the diffTableSections we get when doing a diff, each will be its own table in the view
var diffTableSections []*TableDiffSection
for i, section := range diffFile.Sections { for i, section := range diffFile.Sections {
var rows []*TableDiffRow // Each section has multiple diffTableRows
var diffTableRows []*TableDiffRow
lines := tryMergeLines(section.Lines) lines := tryMergeLines(section.Lines)
// Loop through the merged lines to get each row of the CSV diff table for this section
for j, line := range lines { for j, line := range lines {
if i == 0 && j == 0 && (line[0] != 1 || line[1] != 1) { if i == 0 && j == 0 && (line[0] != 1 || line[1] != 1) {
diffRow, err := createDiffRow(1, 1) diffTableRow, err := createDiffTableRow(1, 1)
if err != nil { if err != nil {
return nil, err return nil, err
} }
if diffRow != nil { if diffTableRow != nil {
rows = append(rows, diffRow) diffTableRows = append(diffTableRows, diffTableRow)
} }
} }
diffRow, err := createDiffRow(line[0], line[1]) diffTableRow, err := createDiffTableRow(line[0], line[1])
if err != nil { if err != nil {
return nil, err return nil, err
} }
if diffRow != nil { if diffTableRow != nil {
rows = append(rows, diffRow) diffTableRows = append(diffTableRows, diffTableRow)
} }
} }
if len(rows) > 0 { if len(diffTableRows) > 0 {
sections = append(sections, &TableDiffSection{Rows: rows}) diffTableSections = append(diffTableSections, &TableDiffSection{Rows: diffTableRows})
} }
} }
return sections, nil return diffTableSections, nil
} }
// getColumnMapping creates a mapping of columns between a and b // getColumnMapping creates a mapping of columns between a and b
func getColumnMapping(a *csvReader, b *csvReader) ([]int, []int) { func getColumnMapping(baseCSVReader *csvReader, headCSVReader *csvReader) ([]int, []int) {
arow, _ := a.GetRow(0) baseRow, _ := baseCSVReader.GetRow(0)
brow, _ := b.GetRow(0) headRow, _ := headCSVReader.GetRow(0)
a2b := []int{} base2HeadColMap := []int{}
b2a := []int{} head2BaseColMap := []int{}
if arow != nil { if baseRow != nil {
a2b = make([]int, len(arow)) base2HeadColMap = make([]int, len(baseRow))
} }
if brow != nil { if headRow != nil {
b2a = make([]int, len(brow)) head2BaseColMap = make([]int, len(headRow))
} }
for i := 0; i < len(b2a); i++ { // Initializes all head2base mappings to be unmappedColumn (-1)
b2a[i] = unmappedColumn for i := 0; i < len(head2BaseColMap); i++ {
head2BaseColMap[i] = unmappedColumn
} }
bcol := 0 // Loops through the baseRow and see if there is a match in the head row
for i := 0; i < len(a2b); i++ { for i := 0; i < len(baseRow); i++ {
a2b[i] = unmappedColumn base2HeadColMap[i] = unmappedColumn
baseCell, err := getCell(baseRow, i)
acell, ea := getCell(arow, i) if err == nil {
if ea == nil { for j := 0; j < len(headRow); j++ {
for j := bcol; j < len(b2a); j++ { if head2BaseColMap[j] == -1 {
bcell, eb := getCell(brow, j) headCell, err := getCell(headRow, j)
if eb == nil && acell == bcell { if err == nil && baseCell == headCell {
a2b[i] = j base2HeadColMap[i] = j
b2a[j] = i head2BaseColMap[j] = i
bcol = j + 1
break break
} }
} }
} }
} }
}
tryMapColumnsByContent(a, a2b, b, b2a) tryMapColumnsByContent(baseCSVReader, base2HeadColMap, headCSVReader, head2BaseColMap)
tryMapColumnsByContent(b, b2a, a, a2b) tryMapColumnsByContent(headCSVReader, head2BaseColMap, baseCSVReader, base2HeadColMap)
return a2b, b2a return base2HeadColMap, head2BaseColMap
} }
// tryMapColumnsByContent tries to map missing columns by the content of the first lines. // tryMapColumnsByContent tries to map missing columns by the content of the first lines.
func tryMapColumnsByContent(a *csvReader, a2b []int, b *csvReader, b2a []int) { func tryMapColumnsByContent(baseCSVReader *csvReader, base2HeadColMap []int, headCSVReader *csvReader, head2BaseColMap []int) {
start := 0 for i := 0; i < len(base2HeadColMap); i++ {
for i := 0; i < len(a2b); i++ { headStart := 0
if a2b[i] == unmappedColumn { for base2HeadColMap[i] == unmappedColumn && headStart < len(head2BaseColMap) {
if b2a[start] == unmappedColumn { if head2BaseColMap[headStart] == unmappedColumn {
rows := util.Min(maxRowsToInspect, util.Max(0, util.Min(len(a.buffer), len(b.buffer))-1)) rows := util.Min(maxRowsToInspect, util.Max(0, util.Min(len(baseCSVReader.buffer), len(headCSVReader.buffer))-1))
same := 0 same := 0
for j := 1; j <= rows; j++ { for j := 1; j <= rows; j++ {
acell, ea := getCell(a.buffer[j], i) baseCell, baseErr := getCell(baseCSVReader.buffer[j], i)
bcell, eb := getCell(b.buffer[j], start+1) headCell, headErr := getCell(headCSVReader.buffer[j], headStart)
if ea == nil && eb == nil && acell == bcell { if baseErr == nil && headErr == nil && baseCell == headCell {
same++ same++
} }
} }
if (float32(same) / float32(rows)) > minRatioToMatch { if (float32(same) / float32(rows)) > minRatioToMatch {
a2b[i] = start + 1 base2HeadColMap[i] = headStart
b2a[start+1] = i head2BaseColMap[headStart] = i
} }
} }
headStart++
} }
start = a2b[i]
} }
} }
@ -328,7 +419,7 @@ func getCell(row []string, column int) (string, error) {
if column < len(row) { if column < len(row) {
return row[column], nil return row[column], nil
} }
return "", errors.New("Undefined column") return "", ErrorUndefinedCell
} }
// countUnmappedColumns returns the count of unmapped columns. // countUnmappedColumns returns the count of unmapped columns.

View file

@ -19,9 +19,9 @@ func TestCSVDiff(t *testing.T) {
diff string diff string
base string base string
head string head string
cells [][2]TableDiffCellType cells [][]TableDiffCellType
}{ }{
// case 0 // case 0 - initial commit of a csv
{ {
diff: `diff --git a/unittest.csv b/unittest.csv diff: `diff --git a/unittest.csv b/unittest.csv
--- a/unittest.csv --- a/unittest.csv
@ -30,10 +30,13 @@ func TestCSVDiff(t *testing.T) {
+col1,col2 +col1,col2
+a,a`, +a,a`,
base: "", base: "",
head: "col1,col2\na,a", head: `col1,col2
cells: [][2]TableDiffCellType{{TableDiffCellAdd, TableDiffCellAdd}, {TableDiffCellAdd, TableDiffCellAdd}}, a,a`,
cells: [][]TableDiffCellType{
{TableDiffCellAdd, TableDiffCellAdd},
{TableDiffCellAdd, TableDiffCellAdd}},
}, },
// case 1 // case 1 - adding 1 row at end
{ {
diff: `diff --git a/unittest.csv b/unittest.csv diff: `diff --git a/unittest.csv b/unittest.csv
--- a/unittest.csv --- a/unittest.csv
@ -43,11 +46,17 @@ func TestCSVDiff(t *testing.T) {
-a,a -a,a
+a,a +a,a
+b,b`, +b,b`,
base: "col1,col2\na,a", base: `col1,col2
head: "col1,col2\na,a\nb,b", a,a`,
cells: [][2]TableDiffCellType{{TableDiffCellEqual, TableDiffCellEqual}, {TableDiffCellEqual, TableDiffCellEqual}, {TableDiffCellAdd, TableDiffCellAdd}}, head: `col1,col2
a,a
b,b`,
cells: [][]TableDiffCellType{
{TableDiffCellUnchanged, TableDiffCellUnchanged}, {TableDiffCellUnchanged, TableDiffCellUnchanged},
{TableDiffCellAdd, TableDiffCellAdd},
}, },
// case 2 },
// case 2 - row deleted
{ {
diff: `diff --git a/unittest.csv b/unittest.csv diff: `diff --git a/unittest.csv b/unittest.csv
--- a/unittest.csv --- a/unittest.csv
@ -56,11 +65,17 @@ func TestCSVDiff(t *testing.T) {
col1,col2 col1,col2
-a,a -a,a
b,b`, b,b`,
base: "col1,col2\na,a\nb,b", base: `col1,col2
head: "col1,col2\nb,b", a,a
cells: [][2]TableDiffCellType{{TableDiffCellEqual, TableDiffCellEqual}, {TableDiffCellDel, TableDiffCellDel}, {TableDiffCellEqual, TableDiffCellEqual}}, b,b`,
head: `col1,col2
b,b`,
cells: [][]TableDiffCellType{
{TableDiffCellUnchanged, TableDiffCellUnchanged}, {TableDiffCellDel, TableDiffCellDel},
{TableDiffCellUnchanged, TableDiffCellUnchanged},
}, },
// case 3 },
// case 3 - row changed
{ {
diff: `diff --git a/unittest.csv b/unittest.csv diff: `diff --git a/unittest.csv b/unittest.csv
--- a/unittest.csv --- a/unittest.csv
@ -69,11 +84,16 @@ func TestCSVDiff(t *testing.T) {
col1,col2 col1,col2
-b,b -b,b
+b,c`, +b,c`,
base: "col1,col2\nb,b", base: `col1,col2
head: "col1,col2\nb,c", b,b`,
cells: [][2]TableDiffCellType{{TableDiffCellEqual, TableDiffCellEqual}, {TableDiffCellEqual, TableDiffCellChanged}}, head: `col1,col2
b,c`,
cells: [][]TableDiffCellType{
{TableDiffCellUnchanged, TableDiffCellUnchanged},
{TableDiffCellUnchanged, TableDiffCellChanged},
}, },
// case 4 },
// case 4 - all deleted
{ {
diff: `diff --git a/unittest.csv b/unittest.csv diff: `diff --git a/unittest.csv b/unittest.csv
--- a/unittest.csv --- a/unittest.csv
@ -81,9 +101,88 @@ func TestCSVDiff(t *testing.T) {
@@ -1,2 +0,0 @@ @@ -1,2 +0,0 @@
-col1,col2 -col1,col2
-b,c`, -b,c`,
base: "col1,col2\nb,c", base: `col1,col2
b,c`,
head: "", head: "",
cells: [][2]TableDiffCellType{{TableDiffCellDel, TableDiffCellDel}, {TableDiffCellDel, TableDiffCellDel}}, cells: [][]TableDiffCellType{
{TableDiffCellDel, TableDiffCellDel},
{TableDiffCellDel, TableDiffCellDel},
},
},
// case 5 - renames first column
{
diff: `diff --git a/unittest.csv b/unittest.csv
--- a/unittest.csv
+++ b/unittest.csv
@@ -1,3 +1,3 @@
-col1,col2,col3
+cola,col2,col3
a,b,c`,
base: `col1,col2,col3
a,b,c`,
head: `cola,col2,col3
a,b,c`,
cells: [][]TableDiffCellType{
{TableDiffCellDel, TableDiffCellAdd, TableDiffCellUnchanged, TableDiffCellUnchanged},
{TableDiffCellDel, TableDiffCellAdd, TableDiffCellUnchanged, TableDiffCellUnchanged},
},
},
// case 6 - inserts a column after first, deletes last column
{
diff: `diff --git a/unittest.csv b/unittest.csv
--- a/unittest.csv
+++ b/unittest.csv
@@ -1,2 +1,2 @@
-col1,col2,col3
-a,b,c
+col1,col1a,col2
+a,d,b`,
base: `col1,col2,col3
a,b,c`,
head: `col1,col1a,col2
a,d,b`,
cells: [][]TableDiffCellType{
{TableDiffCellUnchanged, TableDiffCellAdd, TableDiffCellDel, TableDiffCellMovedUnchanged},
{TableDiffCellUnchanged, TableDiffCellAdd, TableDiffCellDel, TableDiffCellMovedUnchanged},
},
},
// case 7 - deletes first column, inserts column after last
{
diff: `diff --git a/unittest.csv b/unittest.csv
--- a/unittest.csv
+++ b/unittest.csv
@@ -1,2 +1,2 @@
-col1,col2,col3
-a,b,c
+col2,col3,col4
+b,c,d`,
base: `col1,col2,col3
a,b,c`,
head: `col2,col3,col4
b,c,d`,
cells: [][]TableDiffCellType{
{TableDiffCellDel, TableDiffCellUnchanged, TableDiffCellUnchanged, TableDiffCellAdd},
{TableDiffCellDel, TableDiffCellUnchanged, TableDiffCellUnchanged, TableDiffCellAdd},
},
},
// case 8 - two columns deleted, 2 added
{
diff: `diff --git a/unittest.csv b/unittest.csv
--- a/unittest.csv
+++ b/unittest.csv
@@ -1,2 +1,2 @@
-col1,col2,col
-a,b,c
+col3,col4,col5
+c,d,e`,
base: `col1,col2,col3
a,b,c`,
head: `col3,col4,col5
c,d,e`,
cells: [][]TableDiffCellType{
{TableDiffCellDel, TableDiffCellMovedUnchanged, TableDiffCellDel, TableDiffCellAdd, TableDiffCellAdd},
{TableDiffCellDel, TableDiffCellMovedUnchanged, TableDiffCellDel, TableDiffCellAdd, TableDiffCellAdd},
},
}, },
} }
@ -116,7 +215,7 @@ func TestCSVDiff(t *testing.T) {
assert.Len(t, section.Rows, len(c.cells), "case %d: should be %d rows", n, len(c.cells)) assert.Len(t, section.Rows, len(c.cells), "case %d: should be %d rows", n, len(c.cells))
for i, row := range section.Rows { for i, row := range section.Rows {
assert.Len(t, row.Cells, 2, "case %d: row %d should have two cells", n, i) assert.Len(t, row.Cells, len(c.cells[i]), "case %d: row %d should have %d cells", n, i, len(c.cells[i]))
for j, cell := range row.Cells { for j, cell := range row.Cells {
assert.Equal(t, c.cells[i][j], cell.Type, "case %d: row %d cell %d should be equal", n, i, j) assert.Equal(t, c.cells[i][j], cell.Type, "case %d: row %d cell %d should be equal", n, i, j)
} }

View file

@ -12,12 +12,18 @@
{{if and (eq $i 0) (eq $j 0)}} {{if and (eq $i 0) (eq $j 0)}}
<th class="line-num">{{.RowIdx}}</th> <th class="line-num">{{.RowIdx}}</th>
{{range $j, $cell := $row.Cells}} {{range $j, $cell := $row.Cells}}
{{if eq $cell.Type 2}} {{if not $cell}}
<th></th>
{{else if eq $cell.Type 2}}
<th class="modified"><span class="removed-code">{{.LeftCell}}</span> <span class="added-code">{{.RightCell}}</span></th> <th class="modified"><span class="removed-code">{{.LeftCell}}</span> <span class="added-code">{{.RightCell}}</span></th>
{{else if eq $cell.Type 3}} {{else if eq $cell.Type 3}}
<th class="added"><span class="added-code">{{.LeftCell}}</span></th> <th class="added"><span class="added-code">{{.RightCell}}</span></th>
{{else if eq $cell.Type 4}} {{else if eq $cell.Type 4}}
<th class="removed"><span class="removed-code">{{.LeftCell}}</span></th> <th class="removed"><span class="removed-code">{{.LeftCell}}</span></th>
{{else if eq $cell.Type 5}}
<th class="moved">{{.RightCell}}</th>
{{else if eq $cell.Type 6}}
<th class="moved"><span class="removed-code">{{.LeftCell}}</span> <span class="added-code">{{.RightCell}}</span></th>
{{else}} {{else}}
<th>{{.RightCell}}</th> <th>{{.RightCell}}</th>
{{end}} {{end}}
@ -25,12 +31,18 @@
{{else}} {{else}}
<td class="line-num">{{if .RowIdx}}{{.RowIdx}}{{end}}</td> <td class="line-num">{{if .RowIdx}}{{.RowIdx}}{{end}}</td>
{{range $j, $cell := $row.Cells}} {{range $j, $cell := $row.Cells}}
{{if eq $cell.Type 2}} {{if not $cell}}
<td></td>
{{else if eq $cell.Type 2}}
<td class="modified"><span class="removed-code">{{.LeftCell}}</span> <span class="added-code">{{.RightCell}}</span></td> <td class="modified"><span class="removed-code">{{.LeftCell}}</span> <span class="added-code">{{.RightCell}}</span></td>
{{else if eq $cell.Type 3}} {{else if eq $cell.Type 3}}
<td class="added"><span class="added-code">{{.LeftCell}}</span></td> <td class="added"><span class="added-code">{{.RightCell}}</span></td>
{{else if eq $cell.Type 4}} {{else if eq $cell.Type 4}}
<td class="removed"><span class="removed-code">{{.LeftCell}}</span></td> <td class="removed"><span class="removed-code">{{.LeftCell}}</span></td>
{{else if eq $cell.Type 5}}
<td class="moved">{{.RightCell}}</td>
{{else if eq $cell.Type 6}}
<td class="moved"><span class="removed-code">{{.LeftCell}}</span> <span class="added-code">{{.RightCell}}</span></td>
{{else}} {{else}}
<td>{{.RightCell}}</td> <td>{{.RightCell}}</td>
{{end}} {{end}}

View file

@ -76,8 +76,10 @@
--color-diff-removed-word-bg: #fdb8c0; --color-diff-removed-word-bg: #fdb8c0;
--color-diff-added-word-bg: #acf2bd; --color-diff-added-word-bg: #acf2bd;
--color-diff-removed-row-bg: #ffeef0; --color-diff-removed-row-bg: #ffeef0;
--color-diff-moved-row-bg: #f1f8d1;
--color-diff-added-row-bg: #e6ffed; --color-diff-added-row-bg: #e6ffed;
--color-diff-removed-row-border: #f1c0c0; --color-diff-removed-row-border: #f1c0c0;
--color-diff-moved-row-border: #d0e27f;
--color-diff-added-row-border: #e6ffed; --color-diff-added-row-border: #e6ffed;
--color-diff-inactive: #f2f2f2; --color-diff-inactive: #f2f2f2;
/* target-based colors */ /* target-based colors */

View file

@ -1500,6 +1500,12 @@
background-color: var(--color-diff-removed-row-bg) !important; background-color: var(--color-diff-removed-row-bg) !important;
} }
td.moved,
th.moved,
tr.moved {
background-color: var(--color-diff-moved-row-bg) !important;
}
tbody.section { tbody.section {
border-top: 2px solid var(--color-secondary); border-top: 2px solid var(--color-secondary);
} }

View file

@ -71,8 +71,10 @@
--color-diff-removed-word-bg: #6f3333; --color-diff-removed-word-bg: #6f3333;
--color-diff-added-word-bg: #3c653c; --color-diff-added-word-bg: #3c653c;
--color-diff-removed-row-bg: #3c2626; --color-diff-removed-row-bg: #3c2626;
--color-diff-moved-row-bg: #818044;
--color-diff-added-row-bg: #283e2d; --color-diff-added-row-bg: #283e2d;
--color-diff-removed-row-border: #634343; --color-diff-removed-row-border: #634343;
--color-diff-moved-row-border: #bcca6f;
--color-diff-added-row-border: #314a37; --color-diff-added-row-border: #314a37;
--color-diff-inactive: #353846; --color-diff-inactive: #353846;
/* target-based colors */ /* target-based colors */