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started working on escape sequences

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Dylan Araps 2018-06-18 23:05:20 +10:00
parent 1bcdf4be22
commit e4e190afb1
2 changed files with 32 additions and 1 deletions
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31
README.md
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@ -118,6 +118,9 @@ Any donations are appreciated, they give me the time to make this the best resou
* [Get the terminal size in lines and columns (*from a script*).](#get-the-terminal-size-in-lines-and-columns-from-a-script)
* [Get the terminal size in pixels.](#get-the-terminal-size-in-pixels)
* [Get the current cursor position.](#get-the-current-cursor-position)
* [Escape Sequences](#escape-sequences)
* [Text Colors.](#text-colors)
* [Text Attributes.](#text-attributes)
* [Colors](#colors)
* [Convert a hex color to RGB.](#convert-a-hex-color-to-rgb)
* [Convert an RGB color to hex.](#convert-an-rgb-color-to-hex)
@ -1290,6 +1293,34 @@ $ get_cursor_pos
1 8
```
# Escape Sequences
Contrary to popular belief, there's no issue in using raw escape sequences. Using `tput` just abstracts the same ANSI escape sequences. What's worse is that `tput` isn't actually portable, there are a number of different `tput` variants on different Operating Systems each with different commands (*try and run `tput setaf 3` on a FreeBSD system*). The easiest solution ends up being raw ANSI sequences.
## Text Colors.
| Sequence | What does it do? | Value |
| -------- | ---------------- | ----- |
| `\e[38;5;<NUM>m` | Set text foreground color. | `0-255`
| `\e[48;5;<NUM>m` | Set text background color. | `0-255`
| `\e[38;2;<R>;<G>;<B>m` | Set text foreground color to RGB color. | `R`, `G`, `B`
| `\e[48;2;<R>;<G>;<B>m` | Set text background color to RGB color. | `R`, `G`, `B`
## Text Attributes.
| Sequence | What does it do? |
| -------- | ---------------- |
| `\e[m` | Reset text formatting and colors.
| `\e[1m` | Bold text. |
| `\e[2m` | Faint text. |
| `\e[3m` | Italic text. |
| `\e[4m` | Underline text. |
| `\e[5m` | Slow blink. |
| `\e[5m` | Slow blink. |
| `\e[7m` | Swap foreground and background colors. |
# Colors
## Convert a hex color to RGB.

2
test.sh
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@ -158,7 +158,7 @@ assert_equals() {
else
((fail+=1))
status=$'\e[31m✖'
err="($1 != $2)"
local err="($1 != $2)"
fi
printf ' %s\e[m | %s\n' "$status" "${FUNCNAME[1]/test_} $err"