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148 lines
3.8 KiB
148 lines
3.8 KiB
# common python utility routines for the Bionic tool scripts
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import logging
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import os
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import string
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import sys
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def panic(msg):
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sys.stderr.write(os.path.basename(sys.argv[0]) + ": error: ")
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sys.stderr.write(msg)
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sys.exit(1)
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def get_kernel_headers_dir():
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return os.path.join(get_android_root(), "external/kernel-headers")
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def get_kernel_headers_original_dir():
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return os.path.join(get_kernel_headers_dir(), "original")
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def get_kernel_headers_modified_dir():
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return os.path.join(get_kernel_headers_dir(), "modified")
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def get_kernel_dir():
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return os.path.join(get_android_root(), "bionic/libc/kernel")
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def get_android_root():
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if "ANDROID_BUILD_TOP" in os.environ:
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# Verify that the current directory is in the root.
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# If not, then print an error.
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cwd = os.getcwd()
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root = os.environ["ANDROID_BUILD_TOP"]
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if len(cwd) < len(root) or not root == cwd[:len(root)]:
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panic("Not in android tree pointed at by ANDROID_BUILD_TOP (%s)\n" % root)
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return os.environ["ANDROID_BUILD_TOP"]
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panic("Unable to find root of tree, did you forget to lunch a target?\n")
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class StringOutput:
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def __init__(self):
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self.line = ""
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def write(self,msg):
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self.line += msg
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logging.debug("write '%s'" % msg)
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def get(self):
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return self.line
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def create_file_path(path):
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dirs = []
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while 1:
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parent = os.path.dirname(path)
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#print "parent: %s <- %s" % (parent, path)
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if parent == "/" or parent == "":
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break
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dirs.append(parent)
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path = parent
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dirs.reverse()
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for dir in dirs:
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#print "dir %s" % dir
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if os.path.isdir(dir):
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continue
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os.mkdir(dir)
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class BatchFileUpdater:
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"""a class used to edit several files at once"""
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def __init__(self):
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self.old_files = set()
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self.new_files = set()
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self.new_data = {}
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def readFile(self,path):
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#path = os.path.realpath(path)
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if os.path.exists(path):
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self.old_files.add(path)
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def readDir(self,path):
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#path = os.path.realpath(path)
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for root, dirs, files in os.walk(path):
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for f in files:
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dst = "%s/%s" % (root,f)
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self.old_files.add(dst)
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def editFile(self,dst,data):
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"""edit a destination file. if the file is not mapped from a source,
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it will be added. return 0 if the file content wasn't changed,
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1 if it was edited, or 2 if the file is new"""
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#dst = os.path.realpath(dst)
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result = 1
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if os.path.exists(dst):
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f = open(dst, "r")
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olddata = f.read()
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f.close()
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if olddata == data:
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self.old_files.remove(dst)
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return 0
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else:
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result = 2
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self.new_data[dst] = data
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self.new_files.add(dst)
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return result
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def getChanges(self):
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"""determine changes, returns (adds, deletes, edits)"""
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adds = set()
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edits = set()
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deletes = set()
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for dst in self.new_files:
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if not (dst in self.old_files):
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adds.add(dst)
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else:
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edits.add(dst)
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for dst in self.old_files:
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if not dst in self.new_files:
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deletes.add(dst)
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return (adds, deletes, edits)
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def _writeFile(self,dst):
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if not os.path.exists(os.path.dirname(dst)):
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create_file_path(dst)
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f = open(dst, "w")
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f.write(self.new_data[dst])
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f.close()
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def updateFiles(self):
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adds, deletes, edits = self.getChanges()
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for dst in sorted(adds):
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self._writeFile(dst)
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for dst in sorted(edits):
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self._writeFile(dst)
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for dst in sorted(deletes):
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os.remove(dst)
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