[Scons-users] first builder / download

[Kraus Philipp]

Hi,

I try to create my first own builder for downloading a file. I read the documentation, but I don't find any good explain to do this.

This is my code

def url_downloadfile(target, source, env) :
    target = open( target, "wb" )
    f = urllib2.urlopen(source)
    target.write(f.read())
    target.close()
    f.close()
    return target, source
    
    
def url_emitter(target, source, env) :
    if (target[0] == source[0]) :
        target[0] = str(source[0]).split("/")[-1]
    return target, source



dw = Builder(action = url_downloadfile, emitter = url_emitter, single_source = True )
env = Environment(BUILDERS = {"Downloader" : dw})

env.Downloader( "http://myurl/myfile.tar.gz" )



I know that I can modify the source / target list with the emitter, so I think it is correct
because the source list (here only on element) is the url, but the target list is here the url
also, so I must modify the list, so that the last part of my url should be the target (or a target
is setup manually, so I use this)

But now I get scons: *** [myfile.tar.gz] Source <url> not found, needed by target `myfile.tar.gz'.

This is imho correct, because the url is not a file, so Scons does not know anything about the url.
How can I change this? I think, my input of the command is only a string object and not a FS Entry
object

Thanks

PHil
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