images

func Copy ¶ added in v1.11.0

func Copy(dest, src string) error

Copy a file from the source location to the destination.

func Duplicate ¶

func Duplicate(name, suffix string) (string, error)

Duplicate an image file and appends the suffix to its name.

func Fix ¶

func Fix(db *sql.DB, w io.Writer, cfg conf.Config) error

Fix generates any missing assets from downloads that are images.

func Generate ¶

func Generate(w io.Writer, cfg conf.Config, src, id string, remove bool) error

Generate a collection of site images.

func Info ¶

func Info(name string) (
	width int, height int, format string, err error,
)

Info returns the image metadata.

func Libraries ¶ added in v1.11.0

func Libraries(w io.Writer, src, pngDest string, remove bool) error

func Move ¶

func Move(dest, src string) error

Move a file from the source location to the destination. This is used in situations where os.rename() fails due to multiple partitions.

func ReplaceExt ¶ added in v1.11.0

func ReplaceExt(ext, name string) string

ReplaceExt replaces or appends the extension to a file name.

func ToPNG ¶ added in v1.11.0

func ToPNG(src, dest string, width, height int) (string, error)

ToPNG converts any supported format to a compressed PNG image. helpful: https://www.programming-books.io/essential/ go/images-png-jpeg-bmp-tiff-webp-vp8-gif-c84a45304ec3498081c67aa1ea0d9c49.

func ToThumb ¶

func ToThumb(src, dest string, sizeSquared int) (string, error)

ToThumb creates a thumb from an image that is pixel squared in size.

func ToWebp ¶

func ToWebp(w io.Writer, src, dest string, vendorTempDir bool) (string, error)

ToWebp converts any supported format to a WebP image using a 3rd party library. Input format can be either GIF, PNG, JPEG, TIFF, WebP or raw Y'CbCr samples.

func WebPCalc ¶

func WebPCalc(width, height int) (w, h int)

WebPCalc calculates the largest permitted sizes for a valid WebP crop.

func Width ¶

func Width(name string) (int, error)

Width returns the image width in pixels.