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70 lines
1.9 KiB
Markdown
70 lines
1.9 KiB
Markdown
Columnize
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=========
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Easy column-formatted output for golang
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[](https://travis-ci.org/ryanuber/columnize)
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[](https://godoc.org/github.com/ryanuber/columnize)
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Columnize is a really small Go package that makes building CLI's a little bit
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easier. In some CLI designs, you want to output a number similar items in a
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human-readable way with nicely aligned columns. However, figuring out how wide
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to make each column is a boring problem to solve and eats your valuable time.
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Here is an example:
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```go
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package main
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import (
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"fmt"
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"github.com/ryanuber/columnize"
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)
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func main() {
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output := []string{
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"Name | Gender | Age",
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"Bob | Male | 38",
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"Sally | Female | 26",
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}
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result := columnize.SimpleFormat(output)
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fmt.Println(result)
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}
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```
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As you can see, you just pass in a list of strings. And the result:
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```
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Name Gender Age
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Bob Male 38
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Sally Female 26
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```
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Columnize is tolerant of missing or empty fields, or even empty lines, so
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passing in extra lines for spacing should show up as you would expect.
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Configuration
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=============
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Columnize is configured using a `Config`, which can be obtained by calling the
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`DefaultConfig()` method. You can then tweak the settings in the resulting
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`Config`:
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```
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config := columnize.DefaultConfig()
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config.Delim = "|"
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config.Glue = " "
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config.Prefix = ""
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config.Empty = ""
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```
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* `Delim` is the string by which columns of **input** are delimited
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* `Glue` is the string by which columns of **output** are delimited
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* `Prefix` is a string by which each line of **output** is prefixed
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* `Empty` is a string used to replace blank values found in output
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You can then pass the `Config` in using the `Format` method (signature below) to
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have text formatted to your liking.
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See the [godoc](https://godoc.org/github.com/ryanuber/columnize) page for usage.
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