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diff --git a/vendor/github.com/rivo/uniseg/README.md b/vendor/github.com/rivo/uniseg/README.md new file mode 100644 index 00000000..f8da293e --- /dev/null +++ b/vendor/github.com/rivo/uniseg/README.md @@ -0,0 +1,62 @@ +# Unicode Text Segmentation for Go + +[](https://godoc.org/github.com/rivo/uniseg) +[](https://goreportcard.com/report/github.com/rivo/uniseg) + +This Go package implements Unicode Text Segmentation according to [Unicode Standard Annex #29](http://unicode.org/reports/tr29/) (Unicode version 12.0.0). + +At this point, only the determination of grapheme cluster boundaries is implemented. + +## Background + +In Go, [strings are read-only slices of bytes](https://blog.golang.org/strings). They can be turned into Unicode code points using the `for` loop or by casting: `[]rune(str)`. However, multiple code points may be combined into one user-perceived character or what the Unicode specification calls "grapheme cluster". Here are some examples: + +|String|Bytes (UTF-8)|Code points (runes)|Grapheme clusters| +|-|-|-|-| +|Käse|6 bytes: `4b 61 cc 88 73 65`|5 code points: `4b 61 308 73 65`|4 clusters: `[4b],[61 308],[73],[65]`| +|🏳️🌈|14 bytes: `f0 9f 8f b3 ef b8 8f e2 80 8d f0 9f 8c 88`|4 code points: `1f3f3 fe0f 200d 1f308`|1 cluster: `[1f3f3 fe0f 200d 1f308]`| +|🇩🇪|8 bytes: `f0 9f 87 a9 f0 9f 87 aa`|2 code points: `1f1e9 1f1ea`|1 cluster: `[1f1e9 1f1ea]`| + +This package provides a tool to iterate over these grapheme clusters. This may be used to determine the number of user-perceived characters, to split strings in their intended places, or to extract individual characters which form a unit. + +## Installation + +```bash +go get github.com/rivo/uniseg +``` + +## Basic Example + +```go +package uniseg + +import ( + "fmt" + + "github.com/rivo/uniseg" +) + +func main() { + gr := uniseg.NewGraphemes("👍🏼!") + for gr.Next() { + fmt.Printf("%x ", gr.Runes()) + } + // Output: [1f44d 1f3fc] [21] +} +``` + +## Documentation + +Refer to https://godoc.org/github.com/rivo/uniseg for the package's documentation. + +## Dependencies + +This package does not depend on any packages outside the standard library. + +## Your Feedback + +Add your issue here on GitHub. Feel free to get in touch if you have any questions. + +## Version + +Version tags will be introduced once Golang modules are official. Consider this version 0.1. |