mirror of
https://github.com/charmbracelet/gum
synced 2024-06-17 04:55:05 +02:00
50 lines
1.2 KiB
Go
50 lines
1.2 KiB
Go
package pager
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import (
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"fmt"
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"github.com/alecthomas/kong"
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"github.com/charmbracelet/bubbles/viewport"
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tea "github.com/charmbracelet/bubbletea"
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"github.com/charmbracelet/gum/internal/stdin"
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"github.com/charmbracelet/gum/style"
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)
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// Run provides a shell script interface for the viewport bubble.
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// https://github.com/charmbracelet/bubbles/viewport
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func (o Options) Run() error {
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vp := viewport.New(o.Style.Width, o.Style.Height)
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vp.Style = o.Style.ToLipgloss()
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if o.Content == "" {
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stdin, err := stdin.Read()
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if err != nil {
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return fmt.Errorf("unable to read stdin")
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}
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if stdin != "" {
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o.Content = stdin
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} else {
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return fmt.Errorf("provide some content to display")
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}
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}
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model := model{
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viewport: vp,
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helpStyle: o.HelpStyle.ToLipgloss(),
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content: o.Content,
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showLineNumbers: o.ShowLineNumbers,
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lineNumberStyle: o.LineNumberStyle.ToLipgloss(),
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}
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_, err := tea.NewProgram(model, tea.WithAltScreen()).Run()
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if err != nil {
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return fmt.Errorf("unable to start program: %w", err)
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}
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return nil
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}
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// BeforeReset hook. Used to unclutter style flags.
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func (o Options) BeforeReset(ctx *kong.Context) error {
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style.HideFlags(ctx)
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return nil
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}
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