在Eclipse中加入Android源码

在我们开发android程序过程中，很多时候需要查看android的源码是如何实现的。这个时候就需要把android的源码加入到 eclipse中，那么在我们通过Git和repo获取到android源码之后，就需要把java文件提取出来，并放到android SDK子目录source下。如果手工来提取这些java文件是很耗费时间的，所以我们可以写个python脚本来自动提取android源码中的java文件，如下：

from __future__ import with_statement # for Python < 2.6

import os
import re
import zipfile

# open a zip file
DST_FILE = 'sources.zip'
if os.path.exists(DST_FILE):
print DST_FILE, "already exists"
exit(1)
zip = zipfile.ZipFile(DST_FILE, 'w', zipfile.ZIP_DEFLATED)

# some files are duplicated, copy them only once
written = {}

# iterate over all Java files
for dir, subdirs, files in os.walk('.'):
for file in files:
if file.endswith('.java'):
# search package name
path = os.path.join(dir, file)
with open(path) as f:
for line in f:
match = re.match(r'/s*package/s+([a-zA-Z0-9/._]+);', line)
if match:
# copy source into the zip file using the package as path
zippath = match.group(1).replace('.', '/') + '/' + file
if zippath not in written:
written[zippath] = 1
zip.write(path, zippath)
break;
zip.close()

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