663 lines
14 KiB
Go
663 lines
14 KiB
Go
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// Copyright 2014 Oleku Konko All rights reserved.
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// Use of this source code is governed by a MIT
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// license that can be found in the LICENSE file.
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// This module is a Table Writer API for the Go Programming Language.
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// The protocols were written in pure Go and works on windows and unix systems
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// Create & Generate text based table
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package tablewriter
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import (
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"bytes"
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"fmt"
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"io"
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"regexp"
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"strings"
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)
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const (
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MAX_ROW_WIDTH = 30
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)
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const (
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CENTER = "+"
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ROW = "-"
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COLUMN = "|"
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SPACE = " "
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NEWLINE = "\n"
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)
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const (
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ALIGN_DEFAULT = iota
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ALIGN_CENTER
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ALIGN_RIGHT
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ALIGN_LEFT
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)
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var (
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decimal = regexp.MustCompile(`^-*\d*\.?\d*$`)
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percent = regexp.MustCompile(`^-*\d*\.?\d*$%$`)
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)
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type Border struct {
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Left bool
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Right bool
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Top bool
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Bottom bool
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}
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type Table struct {
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out io.Writer
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rows [][]string
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lines [][][]string
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cs map[int]int
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rs map[int]int
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headers []string
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footers []string
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autoFmt bool
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autoWrap bool
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mW int
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pCenter string
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pRow string
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pColumn string
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tColumn int
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tRow int
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hAlign int
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fAlign int
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align int
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newLine string
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rowLine bool
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autoMergeCells bool
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hdrLine bool
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borders Border
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colSize int
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}
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// Start New Table
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// Take io.Writer Directly
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func NewWriter(writer io.Writer) *Table {
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t := &Table{
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out: writer,
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rows: [][]string{},
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lines: [][][]string{},
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cs: make(map[int]int),
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rs: make(map[int]int),
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headers: []string{},
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footers: []string{},
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autoFmt: true,
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autoWrap: true,
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mW: MAX_ROW_WIDTH,
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pCenter: CENTER,
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pRow: ROW,
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pColumn: COLUMN,
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tColumn: -1,
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tRow: -1,
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hAlign: ALIGN_DEFAULT,
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fAlign: ALIGN_DEFAULT,
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align: ALIGN_DEFAULT,
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newLine: NEWLINE,
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rowLine: false,
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hdrLine: true,
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borders: Border{Left: true, Right: true, Bottom: true, Top: true},
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colSize: -1}
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return t
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}
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// Render table output
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func (t Table) Render() {
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if t.borders.Top {
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t.printLine(true)
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}
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t.printHeading()
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if t.autoMergeCells {
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t.printRowsMergeCells()
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} else {
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t.printRows()
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}
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if !t.rowLine && t.borders.Bottom {
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t.printLine(true)
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}
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t.printFooter()
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}
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// Set table header
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func (t *Table) SetHeader(keys []string) {
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t.colSize = len(keys)
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for i, v := range keys {
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t.parseDimension(v, i, -1)
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t.headers = append(t.headers, v)
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}
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}
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// Set table Footer
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func (t *Table) SetFooter(keys []string) {
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//t.colSize = len(keys)
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for i, v := range keys {
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t.parseDimension(v, i, -1)
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t.footers = append(t.footers, v)
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}
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}
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// Turn header autoformatting on/off. Default is on (true).
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func (t *Table) SetAutoFormatHeaders(auto bool) {
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t.autoFmt = auto
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}
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// Turn automatic multiline text adjustment on/off. Default is on (true).
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func (t *Table) SetAutoWrapText(auto bool) {
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t.autoWrap = auto
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}
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// Set the Default column width
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func (t *Table) SetColWidth(width int) {
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t.mW = width
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}
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// Set the Column Separator
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func (t *Table) SetColumnSeparator(sep string) {
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t.pColumn = sep
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}
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// Set the Row Separator
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func (t *Table) SetRowSeparator(sep string) {
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t.pRow = sep
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}
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// Set the center Separator
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func (t *Table) SetCenterSeparator(sep string) {
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t.pCenter = sep
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}
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// Set Header Alignment
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func (t *Table) SetHeaderAlignment(hAlign int) {
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t.hAlign = hAlign
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}
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// Set Footer Alignment
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func (t *Table) SetFooterAlignment(fAlign int) {
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t.fAlign = fAlign
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}
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// Set Table Alignment
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func (t *Table) SetAlignment(align int) {
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t.align = align
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}
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// Set New Line
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func (t *Table) SetNewLine(nl string) {
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t.newLine = nl
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}
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// Set Header Line
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// This would enable / disable a line after the header
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func (t *Table) SetHeaderLine(line bool) {
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t.hdrLine = line
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}
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// Set Row Line
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// This would enable / disable a line on each row of the table
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func (t *Table) SetRowLine(line bool) {
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t.rowLine = line
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}
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// Set Auto Merge Cells
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// This would enable / disable the merge of cells with identical values
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func (t *Table) SetAutoMergeCells(auto bool) {
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t.autoMergeCells = auto
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}
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// Set Table Border
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// This would enable / disable line around the table
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func (t *Table) SetBorder(border bool) {
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t.SetBorders(Border{border, border, border, border})
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}
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func (t *Table) SetBorders(border Border) {
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t.borders = border
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}
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// Append row to table
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func (t *Table) Append(row []string) {
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rowSize := len(t.headers)
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if rowSize > t.colSize {
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t.colSize = rowSize
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}
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n := len(t.lines)
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line := [][]string{}
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for i, v := range row {
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// Detect string width
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// Detect String height
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// Break strings into words
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out := t.parseDimension(v, i, n)
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// Append broken words
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line = append(line, out)
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}
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t.lines = append(t.lines, line)
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}
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// Allow Support for Bulk Append
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// Eliminates repeated for loops
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func (t *Table) AppendBulk(rows [][]string) {
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for _, row := range rows {
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t.Append(row)
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}
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}
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// Print line based on row width
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func (t Table) printLine(nl bool) {
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fmt.Fprint(t.out, t.pCenter)
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for i := 0; i < len(t.cs); i++ {
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v := t.cs[i]
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fmt.Fprintf(t.out, "%s%s%s%s",
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t.pRow,
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strings.Repeat(string(t.pRow), v),
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t.pRow,
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t.pCenter)
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}
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if nl {
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fmt.Fprint(t.out, t.newLine)
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}
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}
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// Print line based on row width with our without cell separator
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func (t Table) printLineOptionalCellSeparators(nl bool, displayCellSeparator []bool) {
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fmt.Fprint(t.out, t.pCenter)
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for i := 0; i < len(t.cs); i++ {
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v := t.cs[i]
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if i > len(displayCellSeparator) || displayCellSeparator[i] {
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// Display the cell separator
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fmt.Fprintf(t.out, "%s%s%s%s",
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t.pRow,
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strings.Repeat(string(t.pRow), v),
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t.pRow,
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t.pCenter)
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} else {
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// Don't display the cell separator for this cell
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fmt.Fprintf(t.out, "%s%s",
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strings.Repeat(" ", v+2),
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t.pCenter)
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}
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}
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if nl {
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fmt.Fprint(t.out, t.newLine)
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}
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}
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// Return the PadRight function if align is left, PadLeft if align is right,
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// and Pad by default
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func pad(align int) func(string, string, int) string {
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padFunc := Pad
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switch align {
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case ALIGN_LEFT:
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padFunc = PadRight
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case ALIGN_RIGHT:
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padFunc = PadLeft
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}
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return padFunc
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}
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// Print heading information
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func (t Table) printHeading() {
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// Check if headers is available
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if len(t.headers) < 1 {
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return
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}
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// Check if border is set
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// Replace with space if not set
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fmt.Fprint(t.out, ConditionString(t.borders.Left, t.pColumn, SPACE))
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// Identify last column
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end := len(t.cs) - 1
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// Get pad function
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padFunc := pad(t.hAlign)
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// Print Heading column
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for i := 0; i <= end; i++ {
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v := t.cs[i]
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h := t.headers[i]
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if t.autoFmt {
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h = Title(h)
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}
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pad := ConditionString((i == end && !t.borders.Left), SPACE, t.pColumn)
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fmt.Fprintf(t.out, " %s %s",
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padFunc(h, SPACE, v),
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pad)
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}
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// Next line
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fmt.Fprint(t.out, t.newLine)
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if t.hdrLine {
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t.printLine(true)
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}
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}
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// Print heading information
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func (t Table) printFooter() {
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// Check if headers is available
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if len(t.footers) < 1 {
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return
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}
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// Only print line if border is not set
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if !t.borders.Bottom {
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t.printLine(true)
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}
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// Check if border is set
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// Replace with space if not set
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fmt.Fprint(t.out, ConditionString(t.borders.Bottom, t.pColumn, SPACE))
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// Identify last column
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end := len(t.cs) - 1
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// Get pad function
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padFunc := pad(t.fAlign)
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// Print Heading column
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for i := 0; i <= end; i++ {
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v := t.cs[i]
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f := t.footers[i]
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if t.autoFmt {
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f = Title(f)
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}
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pad := ConditionString((i == end && !t.borders.Top), SPACE, t.pColumn)
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if len(t.footers[i]) == 0 {
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pad = SPACE
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}
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fmt.Fprintf(t.out, " %s %s",
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padFunc(f, SPACE, v),
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pad)
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}
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// Next line
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fmt.Fprint(t.out, t.newLine)
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//t.printLine(true)
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hasPrinted := false
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for i := 0; i <= end; i++ {
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v := t.cs[i]
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pad := t.pRow
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center := t.pCenter
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length := len(t.footers[i])
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if length > 0 {
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hasPrinted = true
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}
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// Set center to be space if length is 0
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if length == 0 && !t.borders.Right {
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center = SPACE
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}
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// Print first junction
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if i == 0 {
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fmt.Fprint(t.out, center)
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}
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// Pad With space of length is 0
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if length == 0 {
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pad = SPACE
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}
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// Ignore left space of it has printed before
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if hasPrinted || t.borders.Left {
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pad = t.pRow
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center = t.pCenter
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}
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// Change Center start position
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if center == SPACE {
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|
|
if i < end && len(t.footers[i+1]) != 0 {
|
||
|
|
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)
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
func (t Table) printRows() {
|
||
|
|
for i, lines := range t.lines {
|
||
|
|
t.printRow(lines, i)
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
// Print Row Information
|
||
|
|
// Adjust column alignment based on type
|
||
|
|
|
||
|
|
func (t Table) printRow(columns [][]string, colKey int) {
|
||
|
|
// Get Maximum Height
|
||
|
|
max := t.rs[colKey]
|
||
|
|
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{}
|
||
|
|
pads := []int{}
|
||
|
|
|
||
|
|
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
|
||
|
|
fmt.Fprint(t.out, ConditionString((!t.borders.Left && y == 0), SPACE, t.pColumn))
|
||
|
|
|
||
|
|
fmt.Fprintf(t.out, SPACE)
|
||
|
|
str := columns[y][x]
|
||
|
|
|
||
|
|
// This would print alignment
|
||
|
|
// Default alignment would use multiple configuration
|
||
|
|
switch t.align {
|
||
|
|
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]))
|
||
|
|
//}
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
fmt.Fprintf(t.out, SPACE)
|
||
|
|
}
|
||
|
|
// Check if border is set
|
||
|
|
// Replace with space if not set
|
||
|
|
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, colKey int, previousLine []string) ([]string, []bool) {
|
||
|
|
// Get Maximum Height
|
||
|
|
max := t.rs[colKey]
|
||
|
|
total := len(columns)
|
||
|
|
|
||
|
|
// Pad Each Height
|
||
|
|
pads := []int{}
|
||
|
|
|
||
|
|
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
|
||
|
|
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]
|
||
|
|
|
||
|
|
if t.autoMergeCells {
|
||
|
|
//Store the full line to merge mutli-lines cells
|
||
|
|
fullLine := strings.Join(columns[y], " ")
|
||
|
|
if len(previousLine) > y && fullLine == previousLine[y] && fullLine != "" {
|
||
|
|
// 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.align {
|
||
|
|
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.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
|
||
|
|
max int
|
||
|
|
)
|
||
|
|
w := DisplayWidth(str)
|
||
|
|
// Calculate Width
|
||
|
|
// Check if with is grater than maximum width
|
||
|
|
if w > t.mW {
|
||
|
|
w = t.mW
|
||
|
|
}
|
||
|
|
|
||
|
|
// Check if width exists
|
||
|
|
v, ok := t.cs[colKey]
|
||
|
|
if !ok || v < w || v == 0 {
|
||
|
|
t.cs[colKey] = w
|
||
|
|
}
|
||
|
|
|
||
|
|
if rowKey == -1 {
|
||
|
|
return raw
|
||
|
|
}
|
||
|
|
// Calculate Height
|
||
|
|
if t.autoWrap {
|
||
|
|
raw, _ = WrapString(str, t.cs[colKey])
|
||
|
|
} else {
|
||
|
|
raw = getLines(str)
|
||
|
|
}
|
||
|
|
|
||
|
|
for _, line := range raw {
|
||
|
|
if w := DisplayWidth(line); w > max {
|
||
|
|
max = w
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Make sure the with is the same length as maximum word
|
||
|
|
// Important for cases where the width is smaller than maxu word
|
||
|
|
if max > t.cs[colKey] {
|
||
|
|
t.cs[colKey] = max
|
||
|
|
}
|
||
|
|
|
||
|
|
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
|
||
|
|
}
|