Package sgr provides tools for working with Select Graphic Rendition (SGR) control sequences, for the Go programming language.
Online documentation, which includes examples, can be found at: http://godoc.org/github.com/reiver/go-sgr
Select Graphic Rendition (SGR) are control sequences of the following form:
CSI n "m"
Or in other words:
ESC "[" n "m"
Or:
"\x1b" "[" n "m"
Here n is number written in text (rather than binary).
For example:
CSI "1" "m"
Or in other words:
ESC "[" "1" "m"
Or:
"\x1b" "[" "1" "m"
Or:
"\x1b[1m"
The SGR control sequences are as follows:
| n | name | sequence | string | notes |
|---|---|---|---|---|
| 0 | off | CSI "0" "m" |
"\x1b[0m" |
Cancels the effect of any preceding occurrence of SGR control sequences. |
| 1 | font-weight, bold | CSI "1" "m" |
"\x1b[1m" |
|
| 2 | font-weight faint | CSI "2" "m" |
"\x1b[2m" |
|
| 3 | font-style italicized | CSI "3" "m" |
"\x1b[3m" |
|
| 4 | underline, single | CSI "4" "m" |
"\x1b[4m" |
singly underlined |
| 5 | blinking, slowly | CSI "5" "m" |
"\x1b[5m" |
|
| 6 | blinking, rapidly | CSI "6" "m" |
"\x1b[6m" |
|
| 7 | negative | CSI "7" "m" |
"\x1b[7m" |
|
| 8 | concealed | CSI "8" "m" |
"\x1b[8m" |
|
| 9 | font, default | CSI "9" "m" |
"\x1b[9m" |
default font |
| 10 | font, alternative 1 | CSI "10" "m" |
"\x1b[10m" |
first alternative font |
| 11 | font, alternative 2 | CSI "11" "m" |
"\x1b[11m" |
second alternative font |
| 12 | font, alternative 3 | CSI "12" "m" |
"\x1b[12m" |
third alternative font |
| 13 | font, alternative 4 | CSI "13" "m" |
"\x1b[13m" |
fourth alternative font |
| 14 | font, alternative 5 | CSI "14" "m" |
"\x1b[14m" |
fifth alternative font |
| 15 | font, alternative 6 | CSI "15" "m" |
"\x1b[15m" |
sixth alternative font |
| 16 | font, alternative 7 | CSI "16" "m" |
"\x1b[16m" |
seventh alternative font |
| 17 | font, alternative 8 | CSI "17" "m" |
"\x1b[17m" |
eighth alternative font |
| 18 | font, alternative 9 | CSI "18" "m" |
"\x1b[18m" |
nineth alternative font |
| 19 | font-style fraktur | CSI "19" "m" |
"\x1b[19m" |
|
| 21 | underline, double | CSI "21" "m" |
"\x1b[21m" |
doubly underlined |
| 22 | font-weight off | CSI "22" "m" |
"\x1b[22m" |
Turns off bold font-weight and faint font-weight if either is on. |
| 23 | font-style off | CSI "23" "m" |
"\x1b[23m" |
Turns off italic font-size and fraktur font-size if either is on. |
| 53 | overline | CSI "53" "m" |
"\x1b[53m" |
|
| 55 | overline off | CSI "55" "m" |
"\x1b[55m" |