97 lines
2.7 KiB
Python
97 lines
2.7 KiB
Python
#!/usr/bin/python2.4
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#
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#
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# Copyright 2009, The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""In memory representation of Android.mk file.
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Specifications for Android.mk can be found at
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development/ndk/docs/ANDROID-MK.txt
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"""
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import re
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from sets import Set
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class AndroidMK(object):
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"""In memory representation of Android.mk file."""
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_RE_INCLUDE = re.compile(r'include\s+\$\((.+)\)')
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_VAR_DELIMITER = ":="
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FILENAME = "Android.mk"
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CERTIFICATE = "LOCAL_CERTIFICATE"
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PACKAGE_NAME = "LOCAL_PACKAGE_NAME"
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def __init__(self, app_path=None):
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self._includes = Set() # variables included in makefile
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self._variables = {} # variables defined in makefile
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if app_path:
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self.ParseMK(app_path)
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def _ProcessMKLine(self, line):
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"""Add a variable definition or include.
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Ignores unrecognized lines.
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Args:
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line: line of text from makefile
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"""
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m = self._RE_INCLUDE.match(line)
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if m:
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self._includes.add(m.group(1))
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else:
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parts = line.split(self._VAR_DELIMITER)
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if len(parts) > 1:
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self._variables[parts[0].strip()] = parts[1].strip()
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def GetVariable(self, identifier):
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"""Retrieve makefile variable.
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Args:
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identifier: name of variable to retrieve
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Returns:
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value of specified identifier, None if identifier not found in makefile
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"""
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# use dict.get(x) rather than dict[x] to avoid KeyError exception,
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# so None is returned if identifier not found
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return self._variables.get(identifier, None)
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def HasInclude(self, identifier):
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"""Check variable is included in makefile.
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Args:
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identifer: name of variable to check
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Returns:
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True if identifer is included in makefile, otherwise False
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"""
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return identifier in self._includes
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def ParseMK(self, app_path):
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"""Parse Android.mk at the specified path.
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Args:
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app_path: path to folder containing Android.mk
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Raises:
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IOError: Android.mk cannot be found at given path, or cannot be opened
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for reading
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"""
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self.app_path = app_path.rstrip("/")
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self.mk_path = "%s/%s" % (self.app_path, self.FILENAME)
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mk = open(self.mk_path)
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for line in mk:
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self._ProcessMKLine(line)
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mk.close()
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