preview

package
v1.4.0 Latest Latest
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Published: Mar 15, 2026 License: MIT Imports: 24 Imported by: 0

Documentation

Overview

Package preview fetches a remote pCloud file and renders it for terminal display inside a bubbletea viewport.

Format detection is centralised in GetPreviewType (type.go). Renderers:

  • PreviewMarkdown → goldmark + chroma (render_markdown.go)
  • PreviewCode → chroma syntax highlight (render_code.go)
  • PreviewText → raw string (text.go)
  • PreviewPDF → ledongthuc/pdf text extraction (pdf.go)
  • PreviewImage → image2ascii colored ASCII art (image.go)
  • PreviewCSV → aligned text table (csv.go)

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func Render

func Render(data []byte, name string, width, height int) (string, error)

Render renders raw file bytes to a string for terminal display. name is used purely for format detection via GetPreviewType. width and height are the available viewport dimensions; a 2-column border offset is subtracted from width here so all renderers stay within bounds.

func RenderError added in v1.3.0

func RenderError(format string, args ...any) string

RenderError returns a styled terminal string for situations where a preview cannot be shown. The returned string is intended to be set as viewport content — callers should return it alongside a nil error.

func RenderFromURL

func RenderFromURL(downloadURL, name string, width, height int) (string, error)

RenderFromURL downloads the file at downloadURL and renders its content to a string suitable for display inside a bubbletea viewport. name is the original filename (used for format detection). width and height define the target terminal dimensions.

Types

type PreviewType added in v1.3.0

type PreviewType string

PreviewType identifies which renderer handles a given file.

const (
	PreviewText        PreviewType = "text"
	PreviewMarkdown    PreviewType = "markdown"
	PreviewCode        PreviewType = "code"
	PreviewImage       PreviewType = "image"
	PreviewPDF         PreviewType = "pdf"
	PreviewCSV         PreviewType = "csv"
	PreviewUnsupported PreviewType = "unsupported"
)

func GetPreviewType added in v1.3.0

func GetPreviewType(name string) PreviewType

GetPreviewType returns the PreviewType for the given filename based on its extension. It is the single authoritative source for extension→renderer mapping, replacing both the old CanPreview function and the ext switch in Render.

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