I've been playing around with pngquant to optimize some pngs. It uses
this syntax:
usage: pngquant [options] [ncolors] [pngfile [pngfile ...]]
I'm able to use it both in Terminal and with LiveCode's shell command. I
pass it some options and a file name, and it makes a new optimized png
file in the same folder.
Now I want to do it via stdin/stdout. I want to pass it a file name on
disk (or an image in a stack) and get back the binary data for the new
image. The man page says this:
"The output filename is the same as the input name except that
it ends in "-fs8.png", "-or8.png" or your custom extension (unless the
input is stdin, in which case the quantized image will go to stdout)."
How would I use stdin/stdout? I tried passing it the binary data of an
image in a stack but I get back "command not found." If I pass it a file
path on disk it always writes a new file.
Here's an example of a file-based command that works:
put <pathToPngquant> && "16" && <pathToImage> into tCmd
get shell(tCmd)
The "it" variable is empty, and the new file appears on disk. I want to
do this:
put <pathToPngquant> && "16" && (the text of img 1) into tCmd
get shell(tCmd) -- get binary data back
Or, if not the text of img 1, using the binary data of an image on disk
would be okay too.
--
Jacqueline Landman Gay | [email protected]
HyperActive Software | http://www.hyperactivesw.com
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