mirror of
https://github.com/Luzifer/vault-openvpn.git
synced 2024-11-14 02:52:44 +00:00
839 lines
18 KiB
Go
839 lines
18 KiB
Go
// 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{1,3}(?:,\d{3})*|\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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caption bool
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captionText string
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autoFmt bool
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autoWrap bool
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reflowText 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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headerParams []string
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columnsParams []string
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footerParams []string
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columnsAlign []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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caption: false,
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captionText: "Table caption.",
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autoFmt: true,
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autoWrap: true,
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reflowText: 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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headerParams: []string{},
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columnsParams: []string{},
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footerParams: []string{},
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columnsAlign: []int{}}
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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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if t.caption {
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t.printCaption()
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}
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}
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const (
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headerRowIdx = -1
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footerRowIdx = -2
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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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lines := t.parseDimension(v, i, headerRowIdx)
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t.headers = append(t.headers, lines)
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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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lines := t.parseDimension(v, i, footerRowIdx)
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t.footers = append(t.footers, lines)
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}
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}
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// Set table Caption
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func (t *Table) SetCaption(caption bool, captionText ...string) {
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t.caption = caption
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if len(captionText) == 1 {
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t.captionText = captionText[0]
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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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// Turn automatic reflowing of multiline text when rewrapping. Default is on (true).
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func (t *Table) SetReflowDuringAutoWrap(auto bool) {
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t.reflowText = 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 minimal width for a column
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func (t *Table) SetColMinWidth(column int, width int) {
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t.cs[column] = 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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func (t *Table) SetColumnAlignment(keys []int) {
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for _, v := range keys {
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switch v {
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case ALIGN_CENTER:
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break
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case ALIGN_LEFT:
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break
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case ALIGN_RIGHT:
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break
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default:
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v = ALIGN_DEFAULT
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}
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t.columnsAlign = append(t.columnsAlign, v)
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}
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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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// NumLines to get the number of lines
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func (t *Table) NumLines() int {
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return len(t.lines)
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}
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// Clear rows
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func (t *Table) ClearRows() {
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t.lines = [][][]string{}
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}
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// Clear footer
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func (t *Table) ClearFooter() {
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t.footers = [][]string{}
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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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// 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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// Checking for ANSI escape sequences for header
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is_esc_seq := false
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if len(t.headerParams) > 0 {
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is_esc_seq = true
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}
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// Maximum height.
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max := t.rs[headerRowIdx]
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// Print Heading
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for x := 0; x < max; x++ {
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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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for y := 0; y <= end; y++ {
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v := t.cs[y]
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h := ""
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if y < len(t.headers) && x < len(t.headers[y]) {
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h = t.headers[y][x]
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}
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if t.autoFmt {
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h = Title(h)
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}
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pad := ConditionString((y == end && !t.borders.Left), SPACE, t.pColumn)
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if is_esc_seq {
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fmt.Fprintf(t.out, " %s %s",
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format(padFunc(h, SPACE, v),
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t.headerParams[y]), pad)
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} else {
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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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}
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// Next line
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fmt.Fprint(t.out, t.newLine)
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}
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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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// 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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// Checking for ANSI escape sequences for header
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is_esc_seq := false
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if len(t.footerParams) > 0 {
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is_esc_seq = true
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}
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// Maximum height.
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max := t.rs[footerRowIdx]
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// Print Footer
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erasePad := make([]bool, len(t.footers))
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for x := 0; x < max; x++ {
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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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for y := 0; y <= end; y++ {
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v := t.cs[y]
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f := ""
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if y < len(t.footers) && x < len(t.footers[y]) {
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f = t.footers[y][x]
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}
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if t.autoFmt {
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f = Title(f)
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}
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pad := ConditionString((y == end && !t.borders.Top), SPACE, t.pColumn)
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if erasePad[y] || (x == 0 && len(f) == 0) {
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pad = SPACE
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erasePad[y] = true
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}
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if is_esc_seq {
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fmt.Fprintf(t.out, " %s %s",
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format(padFunc(f, SPACE, v),
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t.footerParams[y]), pad)
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} else {
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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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//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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}
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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][0])
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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]) != 0 {
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center = t.pCenter
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}
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}
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// Print the footer
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fmt.Fprintf(t.out, "%s%s%s%s",
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pad,
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strings.Repeat(string(pad), v),
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pad,
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center)
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}
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fmt.Fprint(t.out, t.newLine)
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}
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// Print caption text
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func (t Table) printCaption() {
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width := t.getTableWidth()
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paragraph, _ := WrapString(t.captionText, width)
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for linecount := 0; linecount < len(paragraph); linecount++ {
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fmt.Fprintln(t.out, paragraph[linecount])
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}
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}
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// Calculate the total number of characters in a row
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func (t Table) getTableWidth() int {
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var chars int
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for _, v := range t.cs {
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chars += v
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}
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// Add chars, spaces, seperators to calculate the total width of the table.
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// ncols := t.colSize
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// spaces := ncols * 2
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// seps := ncols + 1
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return (chars + (3 * t.colSize) + 2)
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}
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func (t Table) printRows() {
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for i, lines := range t.lines {
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t.printRow(lines, i)
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}
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}
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func (t *Table) fillAlignment(num int) {
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if len(t.columnsAlign) < num {
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t.columnsAlign = make([]int, num)
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for i := range t.columnsAlign {
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t.columnsAlign[i] = t.align
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}
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}
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}
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// Print Row Information
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// Adjust column alignment based on type
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|
|
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
|
|
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]))
|
|
//}
|
|
|
|
}
|
|
}
|
|
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, rowIdx int, previousLine []string) ([]string, []bool) {
|
|
// Get Maximum Height
|
|
max := t.rs[rowIdx]
|
|
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
|
|
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]
|
|
|
|
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.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.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
|
|
}
|