def abspath(fname, check=True):
"""Get the absolute path for fname relative to the base directory of the current context.
Also checks to make sure the file exists. """
p = context().path(fname)
if check and not os.path.exists(p):
raise OSError("File not found: {0}".format(p))
return p
def __init__(self, suggestedpath=None):
"""Derived classes can suggest a path (relative to the current context base)
that is to be used if not overridden by Add()"""
# strip the basepath from absolute paths
if suggestedpath:
basepath = context().basepath
if suggestedpath[0] == '/' and suggestedpath.startswith(basepath):
suggestedpath = suggestedpath[len(basepath):].lstrip('/')
self.path = suggestedpath
