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gitea/vendor/github.com/olekukonko/tablewriter/table.go

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// Copyright 2014 Oleku Konko All rights reserved.
// Use of this source code is governed by a MIT
// license that can be found in the LICENSE file.
// This module is a Table Writer API for the Go Programming Language.
// The protocols were written in pure Go and works on windows and unix systems
// Create & Generate text based table
package tablewriter
import (
"bytes"
"fmt"
"io"
"regexp"
"strings"
)
const (
MAX_ROW_WIDTH = 30
)
const (
CENTER = "+"
ROW = "-"
COLUMN = "|"
SPACE = " "
NEWLINE = "\n"
)
const (
ALIGN_DEFAULT = iota
ALIGN_CENTER
ALIGN_RIGHT
ALIGN_LEFT
)
var (
decimal = regexp.MustCompile(`^-?(?:\d{1,3}(?:,\d{3})*|\d+)(?:\.\d+)?$`)
percent = regexp.MustCompile(`^-?\d+\.?\d*$%$`)
)
type Border struct {
Left bool
Right bool
Top bool
Bottom bool
}
type Table struct {
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out io.Writer
rows [][]string
lines [][][]string
cs map[int]int
rs map[int]int
headers [][]string
footers [][]string
caption bool
captionText string
autoFmt bool
autoWrap bool
reflowText bool
mW int
pCenter string
pRow string
pColumn string
tColumn int
tRow int
hAlign int
fAlign int
align int
newLine string
rowLine bool
autoMergeCells bool
columnsToAutoMergeCells map[int]bool
noWhiteSpace bool
tablePadding string
hdrLine bool
borders Border
colSize int
headerParams []string
columnsParams []string
footerParams []string
columnsAlign []int
}
// Start New Table
// Take io.Writer Directly
func NewWriter(writer io.Writer) *Table {
t := &Table{
out: writer,
rows: [][]string{},
lines: [][][]string{},
cs: make(map[int]int),
rs: make(map[int]int),
headers: [][]string{},
footers: [][]string{},
caption: false,
captionText: "Table caption.",
autoFmt: true,
autoWrap: true,
reflowText: true,
mW: MAX_ROW_WIDTH,
pCenter: CENTER,
pRow: ROW,
pColumn: COLUMN,
tColumn: -1,
tRow: -1,
hAlign: ALIGN_DEFAULT,
fAlign: ALIGN_DEFAULT,
align: ALIGN_DEFAULT,
newLine: NEWLINE,
rowLine: false,
hdrLine: true,
borders: Border{Left: true, Right: true, Bottom: true, Top: true},
colSize: -1,
headerParams: []string{},
columnsParams: []string{},
footerParams: []string{},
columnsAlign: []int{}}
return t
}
// Render table output
func (t *Table) Render() {
if t.borders.Top {
t.printLine(true)
}
t.printHeading()
if t.autoMergeCells {
t.printRowsMergeCells()
} else {
t.printRows()
}
if !t.rowLine && t.borders.Bottom {
t.printLine(true)
}
t.printFooter()
if t.caption {
t.printCaption()
}
}
const (
headerRowIdx = -1
footerRowIdx = -2
)
// Set table header
func (t *Table) SetHeader(keys []string) {
t.colSize = len(keys)
for i, v := range keys {
lines := t.parseDimension(v, i, headerRowIdx)
t.headers = append(t.headers, lines)
}
}
// Set table Footer
func (t *Table) SetFooter(keys []string) {
//t.colSize = len(keys)
for i, v := range keys {
lines := t.parseDimension(v, i, footerRowIdx)
t.footers = append(t.footers, lines)
}
}
// Set table Caption
func (t *Table) SetCaption(caption bool, captionText ...string) {
t.caption = caption
if len(captionText) == 1 {
t.captionText = captionText[0]
}
}
// Turn header autoformatting on/off. Default is on (true).
func (t *Table) SetAutoFormatHeaders(auto bool) {
t.autoFmt = auto
}
// Turn automatic multiline text adjustment on/off. Default is on (true).
func (t *Table) SetAutoWrapText(auto bool) {
t.autoWrap = auto
}
// Turn automatic reflowing of multiline text when rewrapping. Default is on (true).
func (t *Table) SetReflowDuringAutoWrap(auto bool) {
t.reflowText = auto
}
// Set the Default column width
func (t *Table) SetColWidth(width int) {
t.mW = width
}
// Set the minimal width for a column
func (t *Table) SetColMinWidth(column int, width int) {
t.cs[column] = width
}
// Set the Column Separator
func (t *Table) SetColumnSeparator(sep string) {
t.pColumn = sep
}
// Set the Row Separator
func (t *Table) SetRowSeparator(sep string) {
t.pRow = sep
}
// Set the center Separator
func (t *Table) SetCenterSeparator(sep string) {
t.pCenter = sep
}
// Set Header Alignment
func (t *Table) SetHeaderAlignment(hAlign int) {
t.hAlign = hAlign
}
// Set Footer Alignment
func (t *Table) SetFooterAlignment(fAlign int) {
t.fAlign = fAlign
}
// Set Table Alignment
func (t *Table) SetAlignment(align int) {
t.align = align
}
// Set No White Space
func (t *Table) SetNoWhiteSpace(allow bool) {
t.noWhiteSpace = allow
}
// Set Table Padding
func (t *Table) SetTablePadding(padding string) {
t.tablePadding = padding
}
func (t *Table) SetColumnAlignment(keys []int) {
for _, v := range keys {
switch v {
case ALIGN_CENTER:
break
case ALIGN_LEFT:
break
case ALIGN_RIGHT:
break
default:
v = ALIGN_DEFAULT
}
t.columnsAlign = append(t.columnsAlign, v)
}
}
// Set New Line
func (t *Table) SetNewLine(nl string) {
t.newLine = nl
}
// Set Header Line
// This would enable / disable a line after the header
func (t *Table) SetHeaderLine(line bool) {
t.hdrLine = line
}
// Set Row Line
// This would enable / disable a line on each row of the table
func (t *Table) SetRowLine(line bool) {
t.rowLine = line
}
// Set Auto Merge Cells
// This would enable / disable the merge of cells with identical values
func (t *Table) SetAutoMergeCells(auto bool) {
t.autoMergeCells = auto
}
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// Set Auto Merge Cells By Column Index
// This would enable / disable the merge of cells with identical values for specific columns
// If cols is empty, it is the same as `SetAutoMergeCells(true)`.
func (t *Table) SetAutoMergeCellsByColumnIndex(cols []int) {
t.autoMergeCells = true
if len(cols) > 0 {
m := make(map[int]bool)
for _, col := range cols {
m[col] = true
}
t.columnsToAutoMergeCells = m
}
}
// Set Table Border
// This would enable / disable line around the table
func (t *Table) SetBorder(border bool) {
t.SetBorders(Border{border, border, border, border})
}
func (t *Table) SetBorders(border Border) {
t.borders = border
}
// Append row to table
func (t *Table) Append(row []string) {
rowSize := len(t.headers)
if rowSize > t.colSize {
t.colSize = rowSize
}
n := len(t.lines)
line := [][]string{}
for i, v := range row {
// Detect string width
// Detect String height
// Break strings into words
out := t.parseDimension(v, i, n)
// Append broken words
line = append(line, out)
}
t.lines = append(t.lines, line)
}
// Append row to table with color attributes
func (t *Table) Rich(row []string, colors []Colors) {
rowSize := len(t.headers)
if rowSize > t.colSize {
t.colSize = rowSize
}
n := len(t.lines)
line := [][]string{}
for i, v := range row {
// Detect string width
// Detect String height
// Break strings into words
out := t.parseDimension(v, i, n)
if len(colors) > i {
color := colors[i]
out[0] = format(out[0], color)
}
// Append broken words
line = append(line, out)
}
t.lines = append(t.lines, line)
}
// Allow Support for Bulk Append
// Eliminates repeated for loops
func (t *Table) AppendBulk(rows [][]string) {
for _, row := range rows {
t.Append(row)
}
}
// NumLines to get the number of lines
func (t *Table) NumLines() int {
return len(t.lines)
}
// Clear rows
func (t *Table) ClearRows() {
t.lines = [][][]string{}
}
// Clear footer
func (t *Table) ClearFooter() {
t.footers = [][]string{}
}
// Center based on position and border.
func (t *Table) center(i int) string {
if i == -1 && !t.borders.Left {
return t.pRow
}
if i == len(t.cs)-1 && !t.borders.Right {
return t.pRow
}
return t.pCenter
}
// Print line based on row width
func (t *Table) printLine(nl bool) {
fmt.Fprint(t.out, t.center(-1))
for i := 0; i < len(t.cs); i++ {
v := t.cs[i]
fmt.Fprintf(t.out, "%s%s%s%s",
t.pRow,
strings.Repeat(string(t.pRow), v),
t.pRow,
t.center(i))
}
if nl {
fmt.Fprint(t.out, t.newLine)
}
}
// Print line based on row width with our without cell separator
func (t *Table) printLineOptionalCellSeparators(nl bool, displayCellSeparator []bool) {
fmt.Fprint(t.out, t.pCenter)
for i := 0; i < len(t.cs); i++ {
v := t.cs[i]
if i > len(displayCellSeparator) || displayCellSeparator[i] {
// Display the cell separator
fmt.Fprintf(t.out, "%s%s%s%s",
t.pRow,
strings.Repeat(string(t.pRow), v),
t.pRow,
t.pCenter)
} else {
// Don't display the cell separator for this cell
fmt.Fprintf(t.out, "%s%s",
strings.Repeat(" ", v+2),
t.pCenter)
}
}
if nl {
fmt.Fprint(t.out, t.newLine)
}
}
// Return the PadRight function if align is left, PadLeft if align is right,
// and Pad by default
func pad(align int) func(string, string, int) string {
padFunc := Pad
switch align {
case ALIGN_LEFT:
padFunc = PadRight
case ALIGN_RIGHT:
padFunc = PadLeft
}
return padFunc
}
// Print heading information
func (t *Table) printHeading() {
// Check if headers is available
if len(t.headers) < 1 {
return
}
// Identify last column
end := len(t.cs) - 1
// Get pad function
padFunc := pad(t.hAlign)
// Checking for ANSI escape sequences for header
is_esc_seq := false
if len(t.headerParams) > 0 {
is_esc_seq = true
}
// Maximum height.
max := t.rs[headerRowIdx]
// Print Heading
for x := 0; x < max; x++ {
// Check if border is set
// Replace with space if not set
if !t.noWhiteSpace {
fmt.Fprint(t.out, ConditionString(t.borders.Left, t.pColumn, SPACE))
}
for y := 0; y <= end; y++ {
v := t.cs[y]
h := ""
if y < len(t.headers) && x < len(t.headers[y]) {
h = t.headers[y][x]
}
if t.autoFmt {
h = Title(h)
}
pad := ConditionString((y == end && !t.borders.Left), SPACE, t.pColumn)
if t.noWhiteSpace {
pad = ConditionString((y == end && !t.borders.Left), SPACE, t.tablePadding)
}
if is_esc_seq {
if !t.noWhiteSpace {
fmt.Fprintf(t.out, " %s %s",
format(padFunc(h, SPACE, v),
t.headerParams[y]), pad)
} else {
fmt.Fprintf(t.out, "%s %s",
format(padFunc(h, SPACE, v),
t.headerParams[y]), pad)
}
} else {
if !t.noWhiteSpace {
fmt.Fprintf(t.out, " %s %s",
padFunc(h, SPACE, v),
pad)
} else {
// the spaces between breaks the kube formatting
fmt.Fprintf(t.out, "%s%s",
padFunc(h, SPACE, v),
pad)
}
}
}
// Next line
fmt.Fprint(t.out, t.newLine)
}
if t.hdrLine {
t.printLine(true)
}
}
// Print heading information
func (t *Table) printFooter() {
// Check if headers is available
if len(t.footers) < 1 {
return
}
// Only print line if border is not set
if !t.borders.Bottom {
t.printLine(true)
}
// Identify last column
end := len(t.cs) - 1
// Get pad function
padFunc := pad(t.fAlign)
// Checking for ANSI escape sequences for header
is_esc_seq := false
if len(t.footerParams) > 0 {
is_esc_seq = true
}
// Maximum height.
max := t.rs[footerRowIdx]
// Print Footer
erasePad := make([]bool, len(t.footers))
for x := 0; x < max; x++ {
// Check if border is set
// Replace with space if not set
fmt.Fprint(t.out, ConditionString(t.borders.Bottom, t.pColumn, SPACE))
for y := 0; y <= end; y++ {
v := t.cs[y]
f := ""
if y < len(t.footers) && x < len(t.footers[y]) {
f = t.footers[y][x]
}
if t.autoFmt {
f = Title(f)
}
pad := ConditionString((y == end && !t.borders.Top), SPACE, t.pColumn)
if erasePad[y] || (x == 0 && len(f) == 0) {
pad = SPACE
erasePad[y] = true
}
if is_esc_seq {
fmt.Fprintf(t.out, " %s %s",
format(padFunc(f, SPACE, v),
t.footerParams[y]), pad)
} else {
fmt.Fprintf(t.out, " %s %s",
padFunc(f, SPACE, v),
pad)
}
//fmt.Fprintf(t.out, " %s %s",
// padFunc(f, SPACE, v),
// pad)
}
// Next line
fmt.Fprint(t.out, t.newLine)
//t.printLine(true)
}
hasPrinted := false
for i := 0; i <= end; i++ {
v := t.cs[i]
pad := t.pRow
center := t.pCenter
length := len(t.footers[i][0])
if length > 0 {
hasPrinted = true
}
// Set center to be space if length is 0
if length == 0 && !t.borders.Right {
center = SPACE
}
// Print first junction
if i == 0 {
if length > 0 && !t.borders.Left {
center = t.pRow
}
fmt.Fprint(t.out, center)
}
// Pad With space of length is 0
if length == 0 {
pad = SPACE
}
// Ignore left space as it has printed before
if hasPrinted || t.borders.Left {
pad = t.pRow
center = t.pCenter
}
// Change Center end position
if center != SPACE {
if i == end && !t.borders.Right {
center = t.pRow
}
}
// Change Center start position
if center == SPACE {
if i < end && len(t.footers[i+1][0]) != 0 {
if !t.borders.Left {
center = t.pRow
} else {
center = t.pCenter
}
}
}
// Print the footer
fmt.Fprintf(t.out, "%s%s%s%s",
pad,
strings.Repeat(string(pad), v),
pad,
center)
}
fmt.Fprint(t.out, t.newLine)
}
// Print caption text
func (t Table) printCaption() {
width := t.getTableWidth()
paragraph, _ := WrapString(t.captionText, width)
for linecount := 0; linecount < len(paragraph); linecount++ {
fmt.Fprintln(t.out, paragraph[linecount])
}
}
// Calculate the total number of characters in a row
func (t Table) getTableWidth() int {
var chars int
for _, v := range t.cs {
chars += v
}
// Add chars, spaces, seperators to calculate the total width of the table.
// ncols := t.colSize
// spaces := ncols * 2
// seps := ncols + 1
return (chars + (3 * t.colSize) + 2)
}
func (t Table) printRows() {
for i, lines := range t.lines {
t.printRow(lines, i)
}
}
func (t *Table) fillAlignment(num int) {
if len(t.columnsAlign) < num {
t.columnsAlign = make([]int, num)
for i := range t.columnsAlign {
t.columnsAlign[i] = t.align
}
}
}
// Print Row Information
// Adjust column alignment based on type
func (t *Table) printRow(columns [][]string, rowIdx int) {
// Get Maximum Height
max := t.rs[rowIdx]
total := len(columns)
// TODO Fix uneven col size
// if total < t.colSize {
// for n := t.colSize - total; n < t.colSize ; n++ {
// columns = append(columns, []string{SPACE})
// t.cs[n] = t.mW
// }
//}
// Pad Each Height
pads := []int{}
// Checking for ANSI escape sequences for columns
is_esc_seq := false
if len(t.columnsParams) > 0 {
is_esc_seq = true
}
t.fillAlignment(total)
for i, line := range columns {
length := len(line)
pad := max - length
pads = append(pads, pad)
for n := 0; n < pad; n++ {
columns[i] = append(columns[i], " ")
}
}
//fmt.Println(max, "\n")
for x := 0; x < max; x++ {
for y := 0; y < total; y++ {
// Check if border is set
if !t.noWhiteSpace {
fmt.Fprint(t.out, ConditionString((!t.borders.Left && y == 0), SPACE, t.pColumn))
fmt.Fprintf(t.out, SPACE)
}
str := columns[y][x]
// Embedding escape sequence with column value
if is_esc_seq {
str = format(str, t.columnsParams[y])
}
// This would print alignment
// Default alignment would use multiple configuration
switch t.columnsAlign[y] {
case ALIGN_CENTER: //
fmt.Fprintf(t.out, "%s", Pad(str, SPACE, t.cs[y]))
case ALIGN_RIGHT:
fmt.Fprintf(t.out, "%s", PadLeft(str, SPACE, t.cs[y]))
case ALIGN_LEFT:
fmt.Fprintf(t.out, "%s", PadRight(str, SPACE, t.cs[y]))
default:
if decimal.MatchString(strings.TrimSpace(str)) || percent.MatchString(strings.TrimSpace(str)) {
fmt.Fprintf(t.out, "%s", PadLeft(str, SPACE, t.cs[y]))
} else {
fmt.Fprintf(t.out, "%s", PadRight(str, SPACE, t.cs[y]))
// TODO Custom alignment per column
//if max == 1 || pads[y] > 0 {
// fmt.Fprintf(t.out, "%s", Pad(str, SPACE, t.cs[y]))
//} else {
// fmt.Fprintf(t.out, "%s", PadRight(str, SPACE, t.cs[y]))
//}
}
}
if !t.noWhiteSpace {
fmt.Fprintf(t.out, SPACE)
} else {
fmt.Fprintf(t.out, t.tablePadding)
}
}
// Check if border is set
// Replace with space if not set
if !t.noWhiteSpace {
fmt.Fprint(t.out, ConditionString(t.borders.Left, t.pColumn, SPACE))
}
fmt.Fprint(t.out, t.newLine)
}
if t.rowLine {
t.printLine(true)
}
}
// Print the rows of the table and merge the cells that are identical
func (t *Table) printRowsMergeCells() {
var previousLine []string
var displayCellBorder []bool
var tmpWriter bytes.Buffer
for i, lines := range t.lines {
// We store the display of the current line in a tmp writer, as we need to know which border needs to be print above
previousLine, displayCellBorder = t.printRowMergeCells(&tmpWriter, lines, i, previousLine)
if i > 0 { //We don't need to print borders above first line
if t.rowLine {
t.printLineOptionalCellSeparators(true, displayCellBorder)
}
}
tmpWriter.WriteTo(t.out)
}
//Print the end of the table
if t.rowLine {
t.printLine(true)
}
}
// Print Row Information to a writer and merge identical cells.
// Adjust column alignment based on type
func (t *Table) printRowMergeCells(writer io.Writer, columns [][]string, rowIdx int, previousLine []string) ([]string, []bool) {
// Get Maximum Height
max := t.rs[rowIdx]
total := len(columns)
// Pad Each Height
pads := []int{}
// Checking for ANSI escape sequences for columns
is_esc_seq := false
if len(t.columnsParams) > 0 {
is_esc_seq = true
}
for i, line := range columns {
length := len(line)
pad := max - length
pads = append(pads, pad)
for n := 0; n < pad; n++ {
columns[i] = append(columns[i], " ")
}
}
var displayCellBorder []bool
t.fillAlignment(total)
for x := 0; x < max; x++ {
for y := 0; y < total; y++ {
// Check if border is set
fmt.Fprint(writer, ConditionString((!t.borders.Left && y == 0), SPACE, t.pColumn))
fmt.Fprintf(writer, SPACE)
str := columns[y][x]
// Embedding escape sequence with column value
if is_esc_seq {
str = format(str, t.columnsParams[y])
}
if t.autoMergeCells {
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var mergeCell bool
if t.columnsToAutoMergeCells != nil {
// Check to see if the column index is in columnsToAutoMergeCells.
if t.columnsToAutoMergeCells[y] {
mergeCell = true
}
} else {
// columnsToAutoMergeCells was not set.
mergeCell = true
}
//Store the full line to merge mutli-lines cells
fullLine := strings.TrimRight(strings.Join(columns[y], " "), " ")
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if len(previousLine) > y && fullLine == previousLine[y] && fullLine != "" && mergeCell {
// If this cell is identical to the one above but not empty, we don't display the border and keep the cell empty.
displayCellBorder = append(displayCellBorder, false)
str = ""
} else {
// First line or different content, keep the content and print the cell border
displayCellBorder = append(displayCellBorder, true)
}
}
// This would print alignment
// Default alignment would use multiple configuration
switch t.columnsAlign[y] {
case ALIGN_CENTER: //
fmt.Fprintf(writer, "%s", Pad(str, SPACE, t.cs[y]))
case ALIGN_RIGHT:
fmt.Fprintf(writer, "%s", PadLeft(str, SPACE, t.cs[y]))
case ALIGN_LEFT:
fmt.Fprintf(writer, "%s", PadRight(str, SPACE, t.cs[y]))
default:
if decimal.MatchString(strings.TrimSpace(str)) || percent.MatchString(strings.TrimSpace(str)) {
fmt.Fprintf(writer, "%s", PadLeft(str, SPACE, t.cs[y]))
} else {
fmt.Fprintf(writer, "%s", PadRight(str, SPACE, t.cs[y]))
}
}
fmt.Fprintf(writer, SPACE)
}
// Check if border is set
// Replace with space if not set
fmt.Fprint(writer, ConditionString(t.borders.Left, t.pColumn, SPACE))
fmt.Fprint(writer, t.newLine)
}
//The new previous line is the current one
previousLine = make([]string, total)
for y := 0; y < total; y++ {
previousLine[y] = strings.TrimRight(strings.Join(columns[y], " "), " ") //Store the full line for multi-lines cells
}
//Returns the newly added line and wether or not a border should be displayed above.
return previousLine, displayCellBorder
}
func (t *Table) parseDimension(str string, colKey, rowKey int) []string {
var (
raw []string
maxWidth int
)
raw = getLines(str)
maxWidth = 0
for _, line := range raw {
if w := DisplayWidth(line); w > maxWidth {
maxWidth = w
}
}
// If wrapping, ensure that all paragraphs in the cell fit in the
// specified width.
if t.autoWrap {
// If there's a maximum allowed width for wrapping, use that.
if maxWidth > t.mW {
maxWidth = t.mW
}
// In the process of doing so, we need to recompute maxWidth. This
// is because perhaps a word in the cell is longer than the
// allowed maximum width in t.mW.
newMaxWidth := maxWidth
newRaw := make([]string, 0, len(raw))
if t.reflowText {
// Make a single paragraph of everything.
raw = []string{strings.Join(raw, " ")}
}
for i, para := range raw {
paraLines, _ := WrapString(para, maxWidth)
for _, line := range paraLines {
if w := DisplayWidth(line); w > newMaxWidth {
newMaxWidth = w
}
}
if i > 0 {
newRaw = append(newRaw, " ")
}
newRaw = append(newRaw, paraLines...)
}
raw = newRaw
maxWidth = newMaxWidth
}
// Store the new known maximum width.
v, ok := t.cs[colKey]
if !ok || v < maxWidth || v == 0 {
t.cs[colKey] = maxWidth
}
// Remember the number of lines for the row printer.
h := len(raw)
v, ok = t.rs[rowKey]
if !ok || v < h || v == 0 {
t.rs[rowKey] = h
}
//fmt.Printf("Raw %+v %d\n", raw, len(raw))
return raw
}