82 lines
2.0 KiB
Go
82 lines
2.0 KiB
Go
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package table
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import (
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"fmt"
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"strings"
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"unicode/utf8"
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)
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// RenderCSV renders the Table in CSV format. Example:
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// #,First Name,Last Name,Salary,
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// 1,Arya,Stark,3000,
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// 20,Jon,Snow,2000,"You know nothing\, Jon Snow!"
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// 300,Tyrion,Lannister,5000,
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// ,,Total,10000,
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func (t *Table) RenderCSV() string {
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t.initForRender()
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var out strings.Builder
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if t.numColumns > 0 {
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if t.title != "" {
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out.WriteString(t.title)
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}
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if t.autoIndex && len(t.rowsHeader) == 0 {
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t.csvRenderRow(&out, t.getAutoIndexColumnIDs(), renderHint{isAutoIndexRow: true, isHeaderRow: true})
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}
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t.csvRenderRows(&out, t.rowsHeader, renderHint{isHeaderRow: true})
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t.csvRenderRows(&out, t.rows, renderHint{})
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t.csvRenderRows(&out, t.rowsFooter, renderHint{isFooterRow: true})
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if t.caption != "" {
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out.WriteRune('\n')
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out.WriteString(t.caption)
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}
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}
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return t.render(&out)
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}
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func (t *Table) csvFixCommas(str string) string {
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return strings.Replace(str, ",", "\\,", -1)
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}
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func (t *Table) csvFixDoubleQuotes(str string) string {
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return strings.Replace(str, "\"", "\\\"", -1)
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}
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func (t *Table) csvRenderRow(out *strings.Builder, row rowStr, hint renderHint) {
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// when working on line number 2 or more, insert a newline first
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if out.Len() > 0 {
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out.WriteRune('\n')
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}
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// generate the columns to render in CSV format and append to "out"
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for colIdx, colStr := range row {
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// auto-index column
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if colIdx == 0 && t.autoIndex {
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if hint.isRegularRow() {
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out.WriteString(fmt.Sprint(hint.rowNumber))
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}
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out.WriteRune(',')
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}
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if colIdx > 0 {
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out.WriteRune(',')
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}
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if strings.ContainsAny(colStr, "\",\n") {
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out.WriteRune('"')
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out.WriteString(t.csvFixCommas(t.csvFixDoubleQuotes(colStr)))
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out.WriteRune('"')
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} else if utf8.RuneCountInString(colStr) > 0 {
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out.WriteString(colStr)
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}
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}
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for colIdx := len(row); colIdx < t.numColumns; colIdx++ {
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out.WriteRune(',')
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}
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}
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func (t *Table) csvRenderRows(out *strings.Builder, rows []rowStr, hint renderHint) {
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for rowIdx, row := range rows {
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hint.rowNumber = rowIdx + 1
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t.csvRenderRow(out, row, hint)
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}
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}
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