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#!/usr/bin/env python
# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
import os
import platform
import sys
import tokenize
from optparse import OptionParser
from toolfunctions import checkDirectory
from toolfunctions import getFileContent
objMap = None
lastToken = [None, None]
stopTokens = ('OP', 'NAME', 'NUMBER', 'ENDMARKER')
def parseCommandLine():
global directory, onlyRemovable, sharedFolders, deleteObjects
parser = OptionParser("\n%prog [OPTIONS] [DIRECTORY]")
parser.add_option("-o", "--only-removable", dest="onlyRemovable",
action="store_true", default=False,
help="list removable objects only")
parser.add_option("-d", "--delete", dest="delete",
action="store_true", default=False)
parser.add_option("-s", dest="sharedFolders",
action="store", type="string", default="",
help="comma-separated list of shared folders")
(options, args) = parser.parse_args()
if len(args) == 0:
directory = os.path.abspath(".")
elif len(args) == 1:
directory = os.path.abspath(args[0])
else:
print("\nERROR: Too many arguments\n")
parser.print_help()
sys.exit(1)
onlyRemovable = options.onlyRemovable
deleteObjects = options.delete
if len(options.sharedFolders) == 0:
sharedFolders = ()
else:
sharedFolders = map(os.path.abspath, options.sharedFolders.split(','))
def collectObjects():
global objMap
data = getFileContent(objMap)
return map(lambda x: x.strip().split("\t", 1)[0], data.strip().splitlines())
def handleStringsWithTrailingBackSlash(origStr):
try:
while True:
index = origStr.index("\\\n")
origStr = origStr[:index] + origStr[index+2:].lstrip()
except:
return origStr
def handle_token(tokenType, token, startPos, endPos, line):
global useCounts, lastToken, stopTokens
(startRow, startCol) = startPos
(endRow, endCol) = endPos
if tokenize.tok_name[tokenType] == 'STRING':
# concatenate strings followed directly by other strings
if lastToken[0] == 'STRING':
token = "'" + lastToken[1][1:-1] + str(token)[1:-1] + "'"
# store the new string as lastToken after removing potential trailing backslashes
# (including their following indentation)
lastToken = ['STRING', handleStringsWithTrailingBackSlash(str(token))]
# if a stop token occurs check the potential string before it
elif tokenize.tok_name[tokenType] in stopTokens:
if lastToken[0] == 'STRING':
for obj in useCounts:
useCounts[obj] += lastToken[1].count("'%s'" % obj)
useCounts[obj] += lastToken[1].count('"%s"' % obj)
# store the stop token as lastToken
lastToken = [tokenize.tok_name[tokenType], str(token)]
def handleDataFiles(openFile, separator):
global useCounts
# ignore header line
first = True
for line in openFile:
if first:
first = False
continue
currentTokens = line.split(separator)
for token in currentTokens:
stripped = token.strip().strip('"')
if stripped in useCounts:
useCounts[stripped] = useCounts[stripped] + 1
def findUsages():
global directory, objMap, sharedFolders
suffixes = (".py", ".csv", ".tsv")
directories = [directory]
# avoid folders that will be processed anyhow
for shared in sharedFolders:
skip = False
tmpS = shared + "/"
for folder in directories:
tmpD = folder + "/"
if platform.system() in ('Microsoft', 'Windows'):
tmpS = tmpS.lower()
tmpD = tmpD.lower()
if tmpS.startswith(tmpD):
skip = True
break
if not skip:
directories.append(shared)
for directory in directories:
for root, dirnames, filenames in os.walk(directory):
for filename in filter(lambda x: x.endswith(suffixes), filenames):
if sys.version_info.major == 2:
currentFile = open(os.path.join(root, filename), "r")
else:
currentFile = open(os.path.join(root, filename), "r", encoding="utf8")
if filename.endswith(".py"):
if sys.version_info.major == 2:
tokenize.tokenize(currentFile.readline, handle_token)
else:
tokens = tokenize.generate_tokens(currentFile.readline)
for token in tokens:
handle_token(token.type, token.string, token.start, token.end, token.line)
elif filename.endswith(".csv"):
handleDataFiles(currentFile, ",")
elif filename.endswith(".tsv"):
handleDataFiles(currentFile, "\t")
currentFile.close()
currentFile = open(objMap)
if sys.version_info.major == 2:
tokenize.tokenize(currentFile.readline, handle_token)
else:
tokens = tokenize.generate_tokens(currentFile.readline)
for token in tokens:
handle_token(token.type, token.string, token.start, token.end, token.line)
currentFile.close()
def printResult():
global useCounts, onlyRemovable
print
if onlyRemovable:
if min(useCounts.values()) > 0:
print("All objects are used once at least.\n")
return False
print("Unused objects:\n")
for obj in filter(lambda x: useCounts[x] == 0, useCounts):
print("%s" % obj)
return True
else:
outFormat = "%3d %s"
for obj, useCount in useCounts.items():
print(outFormat % (useCount, obj))
print
return None
def deleteRemovable():
global useCounts, objMap
deletable = list(filter(lambda x: useCounts[x] == 0, useCounts))
if len(deletable) == 0:
print("Nothing to delete - leaving objects.map untouched")
return
data = ''
with open(objMap, "r") as objMapFile:
data = objMapFile.read()
objMapBackup = objMap + '~'
if os.path.exists(objMapBackup):
os.unlink(objMapBackup)
os.rename(objMap, objMapBackup)
count = 0
with open(objMap, "w") as objMapFile:
for line in data.splitlines():
try:
obj = line.split('\t')[0]
if obj in deletable:
count += 1
continue
objMapFile.write(line + '\n')
except:
print("Something's wrong in line '%s'" % line)
print("Deleted %d items, old objects.map has been moved to objects.map~" % count)
return count > 0
def main():
global useCounts, objMap, deleteObjects
objMap = checkDirectory(directory)
useCounts = dict.fromkeys(collectObjects(), 0)
findUsages()
atLeastOneRemovable = printResult()
deletedAtLeastOne = deleteObjects and deleteRemovable()
mssg = None
if atLeastOneRemovable:
mssg = "\nAfter removing the listed objects you should re-run this tool\n"
if deletedAtLeastOne:
mssg = "\nYou should re-run this tool\n"
if mssg:
print(mssg + "to find objects that might have been referenced only by removed objects.\n")
return 0
if __name__ == '__main__':
parseCommandLine()
sys.exit(main())
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