83 lines
2.5 KiB
Markdown
83 lines
2.5 KiB
Markdown
|
# Golang CSS Color Parser Library
|
||
|
|
|
||
|
|
[](https://pkg.go.dev/github.com/mazznoer/csscolorparser)
|
||
|
|
[](https://travis-ci.org/mazznoer/csscolorparser)
|
||
|
|
[](https://github.com/mazznoer/csscolorparser/actions)
|
||
|
|
[](https://goreportcard.com/report/github.com/mazznoer/csscolorparser)
|
||
|
|
[](https://codecov.io/gh/mazznoer/csscolorparser)
|
||
|
|
[](https://github.com/mazznoer/csscolorparser)
|
||
|
|
|
||
|
|
[Go](https://www.golang.org/) library for parsing CSS color string as defined in the W3C's [CSS Color Module Level 4](https://www.w3.org/TR/css-color-4/).
|
||
|
|
|
||
|
|
## Supported Color Format
|
||
|
|
|
||
|
|
* [Named colors](https://www.w3.org/TR/css-color-4/#named-colors)
|
||
|
|
* RGB hexadecimal (with and without `#` prefix)
|
||
|
|
+ Short format `#rgb`
|
||
|
|
+ Short format with alpha `#rgba`
|
||
|
|
+ Long format `#rrggbb`
|
||
|
|
+ Long format with alpha `#rrggbbaa`
|
||
|
|
* `rgb()` and `rgba()`
|
||
|
|
* `hsl()` and `hsla()`
|
||
|
|
* `hwb()`
|
||
|
|
* `hwba()`, `hsv()`, `hsva()` - not in CSS standard.
|
||
|
|
|
||
|
|
Not yet supported: `lab()`, `lch()`.
|
||
|
|
|
||
|
|
### Example Color Format
|
||
|
|
|
||
|
|
```
|
||
|
|
transparent
|
||
|
|
lime
|
||
|
|
#0f0
|
||
|
|
#0f0f
|
||
|
|
#00ff00
|
||
|
|
#00ff00ff
|
||
|
|
rgb(0,255,0)
|
||
|
|
rgb(0% 100% 0%)
|
||
|
|
rgb(0 255 0 / 100%)
|
||
|
|
rgba(0,255,0,1)
|
||
|
|
hsl(120,100%,50%)
|
||
|
|
hsl(120deg 100% 50%)
|
||
|
|
hsl(-240 100% 50%)
|
||
|
|
hsl(-240deg 100% 50%)
|
||
|
|
hsl(0.3333turn 100% 50%)
|
||
|
|
hsl(133.333grad 100% 50%)
|
||
|
|
hsl(2.0944rad 100% 50%)
|
||
|
|
hsla(120,100%,50%,100%)
|
||
|
|
hwb(120 0% 0%)
|
||
|
|
hwb(480deg 0% 0% / 100%)
|
||
|
|
hsv(120,100%,100%)
|
||
|
|
hsv(120deg 100% 100% / 100%)
|
||
|
|
```
|
||
|
|
|
||
|
|
## Usage Examples
|
||
|
|
|
||
|
|
```go
|
||
|
|
import "github.com/mazznoer/csscolorparser"
|
||
|
|
```
|
||
|
|
|
||
|
|
```go
|
||
|
|
c, err := csscolorparser.Parse("gold")
|
||
|
|
|
||
|
|
if err != nil {
|
||
|
|
panic(err)
|
||
|
|
}
|
||
|
|
|
||
|
|
fmt.Printf("R:%.3f, G:%.3f, B:%.3f, A:%.3f", c.R, c.G, c.B, c.A) // R:1.000, G:0.843, B:0.000, A:1.000
|
||
|
|
fmt.Println(c.RGBA255()) // 255 215 0 255
|
||
|
|
fmt.Println(c.HexString()) // #ffd700
|
||
|
|
fmt.Println(c.RGBString()) // rgb(255,215,0)
|
||
|
|
```
|
||
|
|
|
||
|
|
## Try It Online
|
||
|
|
|
||
|
|
* [Playground 1](https://play.golang.org/p/8KMIc1TLQB0)
|
||
|
|
* [Playground 2](https://play.golang.org/p/7kb62KSARwa)
|
||
|
|
|
||
|
|
## Similar Projects
|
||
|
|
|
||
|
|
* [csscolorparser](https://github.com/mazznoer/csscolorparser-rs) (Rust)
|
||
|
|
* [csscolorparser](https://github.com/deanm/css-color-parser-js) (Javascript)
|
||
|
|
|