feat: add suppressLastColumnSpaces to remove all trailing spaces in t…

…he final column

table/README.md

@@ -21,6 +21,7 @@ Pretty-print tables into ASCII/Unicode strings.
   - Mirror output to an `io.Writer` (ex. `os.StdOut`) (`SetOutputMirror`)
   - Sort by one or more Columns (`SortBy`)
   - Suppress/hide columns with no content (`SuppressEmptyColumns`) 
+  - Suppress trailing spaces in the last column (`SuppressLastColumnSpaces`) 
   - Customizable Cell rendering per Column (`ColumnConfig.Transformer*`)
   - Hide any columns that you don't want displayed (`ColumnConfig.Hidden`)
   - Reset Headers/Rows/Footers at will to reuse the same Table Writer (`Reset*`)

table/render_init.go

@@ -57,6 +57,12 @@ func (t *Table) extractMaxColumnLengths(rows []rowStr, hint renderHint) {
 
 func (t *Table) extractMaxColumnLengthsFromRow(row rowStr, mci mergedColumnIndices) {
 	for colIdx, colStr := range row {
+		// if this is the last column in the row, and suppressLastColumnSpaces is true
+		if colIdx == len(row)-1 && t.suppressLastColumnSpaces {
+			// set the column max to 0 so no additional padding is added to the column
+			t.maxColumnLengths[colIdx] = 0
+			continue
+		}
 		longestLineLen := text.LongestLineLen(colStr)
 		maxColWidth := t.getColumnWidthMax(colIdx)
 		if maxColWidth > 0 && maxColWidth < longestLineLen {

table/render_test.go

@@ -1175,3 +1175,36 @@ func TestTable_Render_WidthEnforcer(t *testing.T) {
 | R123 | Small name           | 2021-04-19 13:37 | Abcdefghijklmnopqrstuvwxyz |
 +------+----------------------+------------------+----------------------------+`)
 }
+
+func TestTable_Render_SuppressLastColumnSpaces(t *testing.T) {
+	tw := NewWriter()
+	tw.AppendHeader(testHeader2)
+	tw.AppendRows([]Row{
+		{"U2", "Hey", "2021-04-19 13:37", "Yuh yuh yuh"},
+		{"S12", "Uhhhh", "2021-04-19 13:37", "Some dummy data here"},
+		{"R123", "Lobsters", "2021-04-19 13:37", "I like lobsters"},
+		{"R123", "Some big name here and it's pretty big", "2021-04-19 13:37", "Abcdefghijklmnopqrstuvwxyz"},
+		{"R123", "Small name", "2021-04-19 13:37", "Abcdefghijklmnopqrstuvwxyz"},
+	})
+	tw.SetStyle(StyleDefault)
+	tw.Style().Options = OptionsNoBordersAndSeparators
+	tw.Style().Box.PaddingLeft = ""    // trim left space
+	tw.Style().Box.PaddingRight = "\t" // pad right with tab
+
+	compareOutput(t, tw.Render(), `
+ID  	TEXT1                                 	DATE            	TEXT2                     	
+U2  	Hey                                   	2021-04-19 13:37	Yuh yuh yuh               	
+S12 	Uhhhh                                 	2021-04-19 13:37	Some dummy data here      	
+R123	Lobsters                              	2021-04-19 13:37	I like lobsters           	
+R123	Some big name here and it's pretty big	2021-04-19 13:37	Abcdefghijklmnopqrstuvwxyz	
+R123	Small name                            	2021-04-19 13:37	Abcdefghijklmnopqrstuvwxyz	`)
+
+	tw.SuppressLastColumnSpaces()
+	compareOutput(t, tw.Render(), `
+ID  	TEXT1                                 	DATE            	TEXT2	
+U2  	Hey                                   	2021-04-19 13:37	Yuh yuh yuh	
+S12 	Uhhhh                                 	2021-04-19 13:37	Some dummy data here	
+R123	Lobsters                              	2021-04-19 13:37	I like lobsters	
+R123	Some big name here and it's pretty big	2021-04-19 13:37	Abcdefghijklmnopqrstuvwxyz	
+R123	Small name                            	2021-04-19 13:37	Abcdefghijklmnopqrstuvwxyz	`)
+}

table/table.go

@@ -106,6 +106,8 @@ type Table struct {
 	// suppressEmptyColumns hides columns which have no content on all regular
 	// rows
 	suppressEmptyColumns bool
+	// suppressLastColumnSpaces removes all trailing spaces from the end of the last column
+	suppressLastColumnSpaces bool
 	// title contains the text to appear above the table
 	title string
 }
@@ -297,6 +299,12 @@ func (t *Table) SuppressEmptyColumns() {
 	t.suppressEmptyColumns = true
 }
 
+// SuppressLastColumnSpaces removes all trailing spaces from the end of the last column
+// this is useful when OptionsNoBordersAndSeparators is used
+func (t *Table) SuppressLastColumnSpaces() {
+	t.suppressLastColumnSpaces = true
+}
+
 func (t *Table) getAlign(colIdx int, hint renderHint) text.Align {
 	align := text.AlignDefault
 	if cfg, ok := t.columnConfigMap[colIdx]; ok {

table/table_test.go

@@ -19,6 +19,7 @@ var (
 	testFooterMultiLine = Row{"", "", "Total\nSalary", 10000}
 	testHeader          = Row{"#", "First Name", "Last Name", "Salary"}
 	testHeaderMultiLine = Row{"#", "First\nName", "Last\nName", "Salary"}
+	testHeader2         = Row{"ID", "Text1", "Date", "Text2"}
 	testRows            = []Row{
 		{1, "Arya", "Stark", 3000},
 		{20, "Jon", "Snow", 2000, "You know nothing, Jon Snow!"},

table/writer.go

@@ -33,6 +33,7 @@ type Writer interface {
 	SortBy(sortBy []SortBy)
 	Style() *Style
 	SuppressEmptyColumns()
+	SuppressLastColumnSpaces()
 
 	// deprecated; in favor of Style().HTML.CSSClass
 	SetHTMLCSSClass(cssClass string)