74 lines
2.0 KiB
Go
74 lines
2.0 KiB
Go
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package tabwriter_test
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import (
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"fmt"
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"os"
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"text/tabwriter"
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)
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func ExampleWriter_Init() {
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w := new(tabwriter.Writer)
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// Format in tab-separated columns with a tab stop of 8.
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w.Init(os.Stdout, 0, 8, 0, '\t', 0)
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fmt.Fprintln(w, "a\tb\tc\td\t.")
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fmt.Fprintln(w, "123\t12345\t1234567\t123456789\t.")
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fmt.Fprintln(w)
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w.Flush()
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// Format right-aligned in space-separated columns of minimal width 5
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// and at least one blank of padding (so wider column entries do not
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// touch each other).
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w.Init(os.Stdout, 5, 0, 1, ' ', tabwriter.AlignRight)
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fmt.Fprintln(w, "a\tb\tc\td\t.")
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fmt.Fprintln(w, "123\t12345\t1234567\t123456789\t.")
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fmt.Fprintln(w)
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w.Flush()
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// output:
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// a b c d .
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// 123 12345 1234567 123456789 .
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//
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// a b c d.
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// 123 12345 1234567 123456789.
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}
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func Example_elastic() {
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// Observe how the b's and the d's, despite appearing in the
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// second cell of each line, belong to different columns.
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w := tabwriter.NewWriter(os.Stdout, 0, 0, 1, '.', tabwriter.AlignRight|tabwriter.Debug)
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fmt.Fprintln(w, "a\tb\tc")
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fmt.Fprintln(w, "aa\tbb\tcc")
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fmt.Fprintln(w, "aaa\t") // trailing tab
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fmt.Fprintln(w, "aaaa\tdddd\teeee")
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w.Flush()
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// output:
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// ....a|..b|c
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// ...aa|.bb|cc
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// ..aaa|
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// .aaaa|.dddd|eeee
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}
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func Example_trailingTab() {
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// Observe that the third line has no trailing tab,
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// so its final cell is not part of an aligned column.
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const padding = 3
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w := tabwriter.NewWriter(os.Stdout, 0, 0, padding, '-', tabwriter.AlignRight|tabwriter.Debug)
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fmt.Fprintln(w, "a\tb\taligned\t")
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fmt.Fprintln(w, "aa\tbb\taligned\t")
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fmt.Fprintln(w, "aaa\tbbb\tunaligned") // no trailing tab
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fmt.Fprintln(w, "aaaa\tbbbb\taligned\t")
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w.Flush()
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// output:
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// ------a|------b|---aligned|
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// -----aa|-----bb|---aligned|
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// ----aaa|----bbb|unaligned
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// ---aaaa|---bbbb|---aligned|
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}
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