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# common python utility routines for the Bionic tool scripts
import sys, os, commands, string, commands
# basic debugging trace support
# call D_setlevel to set the verbosity level
# and D(), D2(), D3(), D4() to add traces
#
verbose = 0
def panic(msg):
sys.stderr.write( find_program_name() + ": error: " )
sys.stderr.write( msg )
sys.exit(1)
def D(msg):
global verbose
if verbose > 0:
print msg
def D2(msg):
global verbose
if verbose >= 2:
print msg
def D3(msg):
global verbose
if verbose >= 3:
print msg
def D4(msg):
global verbose
if verbose >= 4:
print msg
def D_setlevel(level):
global verbose
verbose = level
# other stuff
#
#
def find_program_name():
return os.path.basename(sys.argv[0])
def find_program_dir():
return os.path.dirname(sys.argv[0])
def find_file_from_upwards(from_path,target_file):
"""find a file in the current directory or its parents. if 'from_path' is None,
seach from the current program's directory"""
path = from_path
if path == None:
path = os.path.realpath(sys.argv[0])
path = os.path.dirname(path)
D("this script seems to be located in: %s" % path)
while 1:
D("probing "+path)
if path == "":
file = target_file
else:
file = path + "/" + target_file
if os.path.isfile(file):
D("found %s in %s" % (target_file, path))
return file
if path == "":
return None
path = os.path.dirname(path)
class StringOutput:
def __init__(self):
self.line = ""
def write(self,msg):
self.line += msg
D2("write '%s'" % msg)
def get(self):
return self.line
def create_file_path(path):
dirs = []
while 1:
parent = os.path.dirname(path)
#print "parent: %s <- %s" % (parent, path)
if parent == "/" or parent == "":
break
dirs.append(parent)
path = parent
dirs.reverse()
for dir in dirs:
#print "dir %s" % dir
if os.path.isdir(dir):
continue
os.mkdir(dir)
def walk_source_files(paths,callback,args,excludes=[]):
"""recursively walk a list of paths and files, only keeping the source files in directories"""
for path in paths:
if len(path) > 0 and path[0] == '@':
# this is the name of another file, include it and parse it
path = path[1:]
if os.path.exists(path):
for line in open(path):
if len(line) > 0 and line[-1] == '\n':
line = line[:-1]
walk_source_files([line],callback,args,excludes)
continue
if not os.path.isdir(path):
callback(path,args)
else:
for root, dirs, files in os.walk(path):
#print "w-- %s (ex: %s)" % (repr((root,dirs)), repr(excludes))
if len(excludes):
for d in dirs[:]:
if os.path.join(root,d) in excludes:
dirs.remove(d)
for f in files:
r, ext = os.path.splitext(f)
if ext in [ ".h", ".c", ".cpp", ".S" ]:
callback( "%s/%s" % (root,f), args )
def cleanup_dir(path):
"""create a directory if needed, and ensure that it is totally empty
by removing any existing content in it"""
if not os.path.exists(path):
os.mkdir(path)
else:
for root, dirs, files in os.walk(path, topdown=False):
if root.endswith("kernel_headers/"):
# skip 'kernel_headers'
continue
for name in files:
os.remove(os.path.join(root, name))
for name in dirs:
os.rmdir(os.path.join(root, name))
def update_file( path, newdata ):
"""update a file on disk, only if its content has changed"""
if os.path.exists( path ):
try:
f = open( path, "r" )
olddata = f.read()
f.close()
except:
D("update_file: cannot read existing file '%s'" % path)
return 0
if oldata == newdata:
D2("update_file: no change to file '%s'" % path )
return 0
update = 1
else:
try:
create_file_path(path)
except:
D("update_file: cannot create path to '%s'" % path)
return 0
f = open( path, "w" )
f.write( newdata )
f.close()
return 1
class BatchFileUpdater:
"""a class used to edit several files at once"""
def __init__(self):
self.old_files = set()
self.new_files = set()
self.new_data = {}
def readFile(self,path):
#path = os.path.realpath(path)
if os.path.exists(path):
self.old_files.add(path)
def readDir(self,path):
#path = os.path.realpath(path)
for root, dirs, files in os.walk(path):
for f in files:
dst = "%s/%s" % (root,f)
self.old_files.add(dst)
def editFile(self,dst,data):
"""edit a destination file. if the file is not mapped from a source,
it will be added. return 0 if the file content wasn't changed,
1 if it was edited, or 2 if the file is new"""
#dst = os.path.realpath(dst)
result = 1
if os.path.exists(dst):
f = open(dst, "r")
olddata = f.read()
f.close()
if olddata == data:
self.old_files.remove(dst)
return 0
else:
result = 2
self.new_data[dst] = data
self.new_files.add(dst)
return result
def getChanges(self):
"""determine changes, returns (adds, deletes, edits)"""
adds = set()
edits = set()
deletes = set()
for dst in self.new_files:
if not (dst in self.old_files):
adds.add(dst)
else:
edits.add(dst)
for dst in self.old_files:
if not dst in self.new_files:
deletes.add(dst)
return (adds, deletes, edits)
def _writeFile(self,dst):
if not os.path.exists(os.path.dirname(dst)):
create_file_path(dst)
f = open(dst, "w")
f.write(self.new_data[dst])
f.close()
def updateFiles(self):
adds, deletes, edits = self.getChanges()
for dst in sorted(adds):
self._writeFile(dst)
for dst in sorted(edits):
self._writeFile(dst)
for dst in sorted(deletes):
os.remove(dst)
def updateGitFiles(self):
adds, deletes, edits = self.getChanges()
if adds:
for dst in sorted(adds):
self._writeFile(dst)
commands.getoutput("git add " + " ".join(adds))
if deletes:
commands.getoutput("git rm " + " ".join(deletes))
if edits:
for dst in sorted(edits):
self._writeFile(dst)
commands.getoutput("git add " + " ".join(edits))
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