mirror of https://github.com/python/cpython.git
113 lines
2.3 KiB
Python
113 lines
2.3 KiB
Python
# Parse Makefiles and Python Setup(.in) files.
|
|
|
|
import re
|
|
|
|
|
|
# Extract variable definitions from a Makefile.
|
|
# Return a dictionary mapping names to values.
|
|
# May raise IOError.
|
|
|
|
makevardef = re.compile('^([a-zA-Z0-9_]+)[ \t]*=(.*)')
|
|
|
|
def getmakevars(filename):
|
|
variables = {}
|
|
fp = open(filename)
|
|
pendingline = ""
|
|
try:
|
|
while 1:
|
|
line = fp.readline()
|
|
if pendingline:
|
|
line = pendingline + line
|
|
pendingline = ""
|
|
if not line:
|
|
break
|
|
if line.endswith('\\\n'):
|
|
pendingline = line[:-2]
|
|
matchobj = makevardef.match(line)
|
|
if not matchobj:
|
|
continue
|
|
(name, value) = matchobj.group(1, 2)
|
|
# Strip trailing comment
|
|
i = value.find('#')
|
|
if i >= 0:
|
|
value = value[:i]
|
|
value = value.strip()
|
|
variables[name] = value
|
|
finally:
|
|
fp.close()
|
|
return variables
|
|
|
|
|
|
# Parse a Python Setup(.in) file.
|
|
# Return two dictionaries, the first mapping modules to their
|
|
# definitions, the second mapping variable names to their values.
|
|
# May raise IOError.
|
|
|
|
setupvardef = re.compile('^([a-zA-Z0-9_]+)=(.*)')
|
|
|
|
def getsetupinfo(filename):
|
|
modules = {}
|
|
variables = {}
|
|
fp = open(filename)
|
|
pendingline = ""
|
|
try:
|
|
while 1:
|
|
line = fp.readline()
|
|
if pendingline:
|
|
line = pendingline + line
|
|
pendingline = ""
|
|
if not line:
|
|
break
|
|
# Strip comments
|
|
i = line.find('#')
|
|
if i >= 0:
|
|
line = line[:i]
|
|
if line.endswith('\\\n'):
|
|
pendingline = line[:-2]
|
|
continue
|
|
matchobj = setupvardef.match(line)
|
|
if matchobj:
|
|
(name, value) = matchobj.group(1, 2)
|
|
variables[name] = value.strip()
|
|
else:
|
|
words = line.split()
|
|
if words:
|
|
modules[words[0]] = words[1:]
|
|
finally:
|
|
fp.close()
|
|
return modules, variables
|
|
|
|
|
|
# Test the above functions.
|
|
|
|
def test():
|
|
import sys
|
|
import os
|
|
if not sys.argv[1:]:
|
|
print 'usage: python parsesetup.py Makefile*|Setup* ...'
|
|
sys.exit(2)
|
|
for arg in sys.argv[1:]:
|
|
base = os.path.basename(arg)
|
|
if base[:8] == 'Makefile':
|
|
print 'Make style parsing:', arg
|
|
v = getmakevars(arg)
|
|
prdict(v)
|
|
elif base[:5] == 'Setup':
|
|
print 'Setup style parsing:', arg
|
|
m, v = getsetupinfo(arg)
|
|
prdict(m)
|
|
prdict(v)
|
|
else:
|
|
print arg, 'is neither a Makefile nor a Setup file'
|
|
print '(name must begin with "Makefile" or "Setup")'
|
|
|
|
def prdict(d):
|
|
keys = d.keys()
|
|
keys.sort()
|
|
for key in keys:
|
|
value = d[key]
|
|
print "%-15s" % key, str(value)
|
|
|
|
if __name__ == '__main__':
|
|
test()
|