Re: images: simple way to read/write and manipulate images in nim?

[leorize]

You'll have to deal with them for now, as the Nim ecosystem is not that big 
yet. It's not too hard to provide abstractions for cstrings, as Nim's string 
can be converted implicitly to them.

If you're on Linux, `gdk-pixbuf` is a viable choice (bindings provided by 
gintro package). Here's a CLI tool that flip and rotate an image of choice.
    
    
    import os, parseopt
    import gintro / gdkpixbuf
    
    var
      filename: string
      output: string
    for kind, key, val in getopt():
      case kind
      of cmdArgument:
        filename = key
      of cmdLongOption, cmdShortOption:
        case key
        of "o", "output":
          output = val
      else: discard
    
    if filename.len < 1:
      quit "No file specified"
    if output.len < 1:
      output = filename.changeFileExt "modified.png"
    let outputType = output[output.searchExtPos + 1..^1]
    if outputType.len < 1:
      quit "Invalid output type"
    
    var pix = newPixbufFromFile filename
    pix = pix.flip true
    pix = pix.rotateSimple PixbufRotation.counterclockwise
    discard pix.savev(output, outputType, [])
    
    
    Run