60 lines
1.4 KiB
Go
60 lines
1.4 KiB
Go
package ansi
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import (
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"bytes"
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"io"
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"github.com/muesli/reflow/wordwrap"
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)
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// BlockElement provides a render buffer for children of a block element.
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// After all children have been rendered into it, it applies indentation and
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// margins around them and writes everything to the parent rendering buffer.
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type BlockElement struct {
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Block *bytes.Buffer
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Style StyleBlock
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Margin bool
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Newline bool
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}
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func (e *BlockElement) Render(w io.Writer, ctx RenderContext) error {
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bs := ctx.blockStack
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bs.Push(*e)
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renderText(w, ctx.options.ColorProfile, bs.Parent().Style.StylePrimitive, e.Style.BlockPrefix)
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renderText(bs.Current().Block, ctx.options.ColorProfile, bs.Current().Style.StylePrimitive, e.Style.Prefix)
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return nil
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}
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func (e *BlockElement) Finish(w io.Writer, ctx RenderContext) error {
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bs := ctx.blockStack
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if e.Margin {
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mw := NewMarginWriter(ctx, w, bs.Current().Style)
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_, err := mw.Write(
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wordwrap.Bytes(bs.Current().Block.Bytes(), int(bs.Width(ctx))))
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if err != nil {
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return err
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}
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if e.Newline {
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_, err = mw.Write([]byte("\n"))
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if err != nil {
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return err
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}
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}
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} else {
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_, err := bs.Parent().Block.Write(bs.Current().Block.Bytes())
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if err != nil {
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return err
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}
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}
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renderText(w, ctx.options.ColorProfile, bs.Current().Style.StylePrimitive, e.Style.Suffix)
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renderText(w, ctx.options.ColorProfile, bs.Parent().Style.StylePrimitive, e.Style.BlockSuffix)
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bs.Current().Block.Reset()
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bs.Pop()
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return nil
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}
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