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import re
import os
# The regular expression for freeze directives. These are comments with the
# word macfreeze immedeately followed by a colon, followed by a directive,
# followed by argument(s)
#
# The directives supported are
# include - Include a module or file
# exclude - Exclude a module
# optional - Include a module if it is found, but don't complain if it isn't
# path - Add sys.path entries. Relative paths are relative to the source file.
#
# See the macfreeze.py main program for a real live example.
#
DIRECTIVE_RE=r'^\s*#\s*macfreeze:\s*(\S*)\s*(.*)\s*$'
REPROG=re.compile(DIRECTIVE_RE)
def findfreezedirectives(program):
extra_modules = []
exclude_modules = []
optional_modules = []
extra_path = []
progdir, filename = os.path.split(program)
fp = open(program)
for line in fp.readlines():
match = REPROG.match(line)
if match:
directive = match.group(1)
argument = match.group(2)
if directive == 'include':
extra_modules.append(argument)
elif directive == 'exclude':
exclude_modules.append(argument)
elif directive == 'optional':
optional_modules.append(argument)
elif directive == 'path':
argument = os.path.join(progdir, argument)
extra_path.append(argument)
else:
print '** Unknown directive', line
return extra_modules, exclude_modules, optional_modules, extra_path
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