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import logging
import os
import os.path
def update_attribute(attributes, name, value):
"""Finds the attribute name and sets it to value in the attributes tuple of tuples, returns the attributes tuple of tuples with the changed attribute."""
ret = list()
# find name in attributes
for n, v in attributes:
if n == name:
ret.append((name, value))
else:
ret.append((n,v))
return tuple(ret)
def split_filename_and_anchor(filename):
parts = filename.split("#")
if len(parts) > 2:
raise Exception("Was passed filename with two (or more) # in it")
elif len(parts) == 2:
file = parts[0]
anchor = parts[1]
else:
file = parts[0]
anchor = None
return tuple([file, anchor])
def change_filename(filename, newext, orginaldir, destdir, makedirs=True):
"""Returns the filename after transforming it to be in destdir and making sure the folders required all exist. Will not damage #anchors at the ends of the paths."""
filename = os.path.normpath(filename)
filename, anchor = split_filename_and_anchor(filename)
if len(filename) != 0:
orginaldir = os.path.normpath(orginaldir)
destdir = os.path.normpath(destdir)
logging.debug(" change_filename('%s', '%s', '%s', '%s', %s)", filename, newext, orginaldir, destdir, makedirs)
outfile_name1 = filename.replace(orginaldir, ".") # files relative name
logging.debug("%s", outfile_name1)
if newext == None:
outfile_name3 = outfile_name1
else:
outfile_name2 = os.path.splitext(outfile_name1)[0] #file's name without ext
logging.debug("%s", outfile_name2)
outfile_name3 = outfile_name2 + newext
logging.debug("%s", outfile_name3)
outfile_name4 = os.path.join(destdir, outfile_name3)
logging.debug("%s", outfile_name4)
outfile_name = os.path.normpath(outfile_name4)
logging.debug("%s", outfile_name)
# make sure that the folder exists to output, if wanted
if makedirs:
outfile_path = os.path.dirname(outfile_name)
if os.path.exists(outfile_path):
if os.path.isdir(outfile_path):
pass # do nothing because the folder already exists
else:
raise Exception("%s already exists but is not a directory"%(outfile_path))
else:
os.makedirs(outfile_path)
else:
outfile_name = filename
if anchor == None:
return outfile_name
else:
return "#".join([outfile_name, anchor])
def make_directory_for_filename(filename):
"""Returns False if direcotry for filename already exists, True if
function was successfully able to create the directory, or raises
and exception for the error."""
path = os.path.dirname(filename)
if os.path.exists(path):
if os.path.isdir(path):
return False
else:
raise ExistsButNotDirectoryError(path)
else:
# only remaing exception to throw is if the user does not have permission
try:
os.makedirs(path)
return True
except:
raise
class ExistsButNotDirectoryError(IOError):
def __init__(self, path="Not Specified"):
self.path = path
def __str__():
return "Path (%s) exists but is not a directory!"
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