spec work re: content pipelines

gistfile1.py

from subprocess import Popen, PIPE

def cat(*files):
    result = []
    for f in files:
        result.extend(open(f).readlines())
    return result


def pipe(cmd, text=None,filename=None):
    if text is None and filename is None:
        raise Exception("pipe() needs input!")
    if text:
        input = PIPE
    else:
        input = open(filename).fileno()
    p = Popen(cmd, stdin=input, stdout=PIPE, stderr=PIPE)
    stdout, stderr = p.communicate()
    if p.returncode != 0:
        raise Response(500)
    return stdout


def lessc(text=None,filename=None):
    """Popular dynamic CSS extension language"""
    return pipe(['lessc', '-x', '-'], text, filename)


"""The above lets you compress css generated by lessc with a simplate like:"""

infiles = [ 'foo.less', 'bar.less' ]

class Result:
    response = []

result = Result()

for f in infiles:
    result.response += lessc(filename=f)

^L
response = result.response

^L




""" or if you install fabricate you can do: """


from fabricate import *

sources = [ 'foo', 'bar' ]

class Result:
    response = None

result = Result()

def build():
    global built_response
    for f in sources:
        run('lessc', '-x', f + ".less", ">" + f + ".css", shell=True)
    result.respose = run('cat', [ f + ".css" for f in sources])
^L
main()
response = result.response

^L

"""the first is a little bit simpler (though not much!) but the latter has awesome incremental
auto-rebuild magic based on md5s of the source files and such."""