Termtables

A Go port of the Ruby library terminal-tables for fast and simple ASCII table generation.

Installation

go get github.com/scylladb/termtables

Go Style Documentation

http://godoc.org/github.com/scylladb/termtables

APC Command Line usage

--markdown — output a markdown table, e.g. apc app list --markdown

--html — output an html table, e.g. apc app list --html

--ascii — output an ascii table, e.g. apc app list --ascii

Basic Usage

package main

import (
  "fmt"
  "github.com/scylladb/termtables"
)

func main() {
  table := termtables.CreateTable()

  table.AddHeaders("Name", "Age")
  table.AddRow("John", "30")
  table.AddRow("Sam", 18)
  table.AddRow("Julie", 20.14)

  fmt.Println(table.Render())
}

Result:

+-------+-------+
| Name  | Age   |
+-------+-------+
| John  | 30    |
| Sam   | 18    |
| Julie | 20.14 |
+-------+-------+

Advanced Usage

The package function-call EnableUTF8() will cause any tables created after that point to use Unicode box-drawing characters for the table lines.

Calling EnableUTF8PerLocale() uses the C library's locale functionality to determine if the current locale environment variables say that the current character map is UTF-8. If, and only if, so, then EnableUTF8() will be called.

Calling SetModeHTML(true) will cause any tables created after that point to be emitted in HTML, while SetModeMarkdown(true) will trigger Markdown. Neither should result in changes to later API to get the different results; the primary intended use-case is extracting the same table, but for documentation.

The table method .AddSeparator() inserts a rule line in the output. This only applies in normal terminal output mode.

The table method .AddTitle() adds a title to the table; in terminal output, this is an initial row; in HTML, it's a caption. In Markdown, it's a line of text before the table, prefixed by Table: .

The table method .SetAlign() takes an alignment and a column number (indexing starts at 1) and changes all current cells in that column to have the given alignment. It does not change the alignment of cells added to the table after this call. Alignment is only stored on a per-cell basis.

Known Issues

Normal output:

• .SetAlign() does not affect headers.

Markdown output mode:

• When emitting Markdown, the column markers are not re-flowed if a vertical bar is an element of a cell, causing an escape to take place; since Markdown is often converted to HTML, this only affects text viewing.
• A title in Markdown is not escaped against all possible forms of Markdown markup (to avoid adding a dependency upon a Markdown library, as supported syntax can vary).
• Markdown requires headers, so a dummy header will be inserted if needed.
• Table alignment is not reflected in Markdown output.