img

Documentation

Overview

Package img has the functions to convert, compress and resize the images.

Index

• Variables
• func Bytes(name string) (uint64, error)
• func Export(name, dest string, amiga bool) (string, error)
• func Make(w io.Writer, cfg conf.Config, name, uuid string, amiga bool) error
• func Reduce(w io.Writer, named, uuid string) (string, error)
• func Resize(w io.Writer, name string) error
• func Type(name string) error

Variables

var (
	ErrNamed     = errors.New("named path cannot be empty")
	ErrDest      = errors.New("dest path cannot be empty")
	ErrSharedLib = errors.New("cannot access shared libraries: libansilove.so.1")
	ErrType      = errors.New("mimetype is not a known text file")

	ErrResize = errors.New("resize only works with the png image format")
)

Functions

func Bytes

func Bytes(name string) (uint64, error)

func Export

func Export(name, dest string, amiga bool) (string, error)

Export any supported text based named file to a compressed PNG image. helpful: https://www.programming-books.io/essential/go /images-png-jpeg-bmp-tiff-webp-vp8-gif-c84a45304ec3498081c67aa1ea0d9c49.

func Make

func Make(w io.Writer, cfg conf.Config, name, uuid string, amiga bool) error

Make both PNG and Webp preview images and a 400x PNG thumbnail from the named text files. Name is the source text file required for conversion to an image. UUID is the universal ID used for the image filename. When the amiga bool is true the image text will use an Amiga era Topaz+, 80x50 font.

func Reduce

func Reduce(w io.Writer, named, uuid string) (string, error)

Reduce the length of the named textfile so it can be parsed by AnsiLove.

func Resize

func Resize(w io.Writer, name string) error

Resize the named image so it is compatible with the format restrictions of WebP.

func Type

func Type(name string) error

Type of the named document is checked and an error is returned for an unknown binary format.