added --no-headers flag to disable header display in tabular modes

cfg/config.go

@@ -25,13 +25,14 @@ import (
 )
 
 const DefaultSeparator string = `(\s\s+|\t)`
-const Version string = "v1.0.14"
+const Version string = "v1.0.15"
 
 var VERSION string // maintained by -x
 
 type Config struct {
 	Debug       bool
 	NoNumbering bool
+	NoHeaders   bool
 	Columns     string
 	UseColumns  []int
 	Separator   string

cmd/root.go

@@ -105,6 +105,7 @@ func Execute() {
 	// options
 	rootCmd.PersistentFlags().BoolVarP(&conf.Debug, "debug", "d", false, "Enable debugging")
 	rootCmd.PersistentFlags().BoolVarP(&conf.NoNumbering, "no-numbering", "n", false, "Disable header numbering")
+	rootCmd.PersistentFlags().BoolVarP(&conf.NoHeaders, "no-headers", "", false, "Disable header display")
 	rootCmd.PersistentFlags().BoolVarP(&conf.NoColor, "no-color", "N", false, "Disable pattern highlighting")
 	rootCmd.PersistentFlags().BoolVarP(&ShowVersion, "version", "V", false, "Print program version")
 	rootCmd.PersistentFlags().BoolVarP(&conf.InvertMatch, "invert-match", "v", false, "select non-matching rows")

cmd/tablizer.go

@@ -13,6 +13,7 @@ SYNOPSIS
           -v, --invert-match       select non-matching rows
           -n, --no-numbering       Disable header numbering
           -N, --no-color           Disable pattern highlighting
+              --no-headers         Disable headers display
           -s, --separator string   Custom field separator
           -k, --sort-by int        Sort by column (default: 1)
 
@@ -87,6 +88,11 @@ DESCRIPTION
 
     The numbering can be suppressed by using the -n option.
 
+    By default tablizer shows a header containing the names of each column.
+    This can be disabled using the --no-headers option. Be aware that this
+    only affects tabular output modes. Shell, Extended, Yaml and CSV output
+    modes always use the column names.
+
     By default, if a pattern has been speficied, matches will be
     highlighted. You can disable this behavior with the -N option.
 
@@ -293,6 +299,7 @@ Operational Flags:
   -v, --invert-match       select non-matching rows
   -n, --no-numbering       Disable header numbering
   -N, --no-color           Disable pattern highlighting
+      --no-headers         Disable headers display
   -s, --separator string   Custom field separator
   -k, --sort-by int        Sort by column (default: 1)
 

lib/printer.go

@@ -69,13 +69,15 @@ func output(w io.Writer, str string) {
 }
 
 /*
-   Emacs org-mode compatible table (also orgtbl-mode)
+Emacs org-mode compatible table (also orgtbl-mode)
 */
 func printOrgmodeData(w io.Writer, c cfg.Config, data *Tabdata) {
 	tableString := &strings.Builder{}
 	table := tablewriter.NewWriter(tableString)
 
-	table.SetHeader(data.headers)
+	if !c.NoHeaders {
+		table.SetHeader(data.headers)
+	}
 
 	for _, row := range data.entries {
 		table.Append(trimRow(row))
@@ -104,13 +106,15 @@ func printOrgmodeData(w io.Writer, c cfg.Config, data *Tabdata) {
 }
 
 /*
-   Markdown table
+Markdown table
 */
 func printMarkdownData(w io.Writer, c cfg.Config, data *Tabdata) {
 	tableString := &strings.Builder{}
 	table := tablewriter.NewWriter(tableString)
 
-	table.SetHeader(data.headers)
+	if !c.NoHeaders {
+		table.SetHeader(data.headers)
+	}
 
 	for _, row := range data.entries {
 		table.Append(trimRow(row))
@@ -124,19 +128,17 @@ func printMarkdownData(w io.Writer, c cfg.Config, data *Tabdata) {
 }
 
 /*
-   Simple ASCII table without any borders etc, just like the input we expect
+Simple ASCII table without any borders etc, just like the input we expect
 */
 func printAsciiData(w io.Writer, c cfg.Config, data *Tabdata) {
 	tableString := &strings.Builder{}
 	table := tablewriter.NewWriter(tableString)
 
-	table.SetHeader(data.headers)
+	if !c.NoHeaders {
+		table.SetHeader(data.headers)
+	}
 	table.AppendBulk(data.entries)
 
-	// for _, row := range data.entries {
-	// 	table.Append(trimRow(row))
-	// }
-
 	table.SetAutoWrapText(false)
 	table.SetAutoFormatHeaders(true)
 	table.SetHeaderAlignment(tablewriter.ALIGN_LEFT)
@@ -154,7 +156,7 @@ func printAsciiData(w io.Writer, c cfg.Config, data *Tabdata) {
 }
 
 /*
-   We simulate the \x command of psql (the PostgreSQL client)
+We simulate the \x command of psql (the PostgreSQL client)
 */
 func printExtendedData(w io.Writer, c cfg.Config, data *Tabdata) {
 	// needed for data output
@@ -174,7 +176,7 @@ func printExtendedData(w io.Writer, c cfg.Config, data *Tabdata) {
 }
 
 /*
-   Shell output, ready to be eval'd. Just like FreeBSD stat(1)
+Shell output, ready to be eval'd. Just like FreeBSD stat(1)
 */
 func printShellData(w io.Writer, c cfg.Config, data *Tabdata) {
 	out := ""

tablizer.1

@@ -133,7 +133,7 @@
 .\" ========================================================================
 .\"
 .IX Title "TABLIZER 1"
-.TH TABLIZER 1 "2023-01-23" "1" "User Commands"
+.TH TABLIZER 1 "2023-04-21" "1" "User Commands"
 .\" For nroff, turn off justification.  Always turn off hyphenation; it makes
 .\" way too many mistakes in technical documents.
 .if n .ad l
@@ -151,6 +151,7 @@ tablizer \- Manipulate tabular output of other programs
 \&      \-v, \-\-invert\-match       select non\-matching rows
 \&      \-n, \-\-no\-numbering       Disable header numbering
 \&      \-N, \-\-no\-color           Disable pattern highlighting
+\&          \-\-no\-headers         Disable headers display
 \&      \-s, \-\-separator string   Custom field separator
 \&      \-k, \-\-sort\-by int        Sort by column (default: 1)
 \&
@@ -234,6 +235,11 @@ the original order.
 .PP
 The numbering can be suppressed by using the \fB\-n\fR option.
 .PP
+By  default tablizer  shows  a  header containing  the  names of  each
+column.  This  can be disabled  using the \fB\-\-no\-headers\fR  option.  Be
+aware that  this only affects  tabular output modes.  Shell, Extended,
+Yaml and \s-1CSV\s0 output modes always use the column names.
+.PP
 By  default, if  a  \fBpattern\fR  has been  speficied,  matches will  be
 highlighted. You can disable this behavior with the \fB\-N\fR option.
 .PP

tablizer.pod

@@ -12,6 +12,7 @@ tablizer - Manipulate tabular output of other programs
       -v, --invert-match       select non-matching rows
       -n, --no-numbering       Disable header numbering
       -N, --no-color           Disable pattern highlighting
+          --no-headers         Disable headers display
       -s, --separator string   Custom field separator
       -k, --sort-by int        Sort by column (default: 1)
 
@@ -90,6 +91,11 @@ the original order.
 
 The numbering can be suppressed by using the B<-n> option.
 
+By  default tablizer  shows  a  header containing  the  names of  each
+column.  This  can be disabled  using the B<--no-headers>  option.  Be
+aware that  this only affects  tabular output modes.  Shell, Extended,
+Yaml and CSV output modes always use the column names.
+
 By  default, if  a  B<pattern>  has been  speficied,  matches will  be
 highlighted. You can disable this behavior with the B<-N> option.