使用Python開發(fā)檢查腳本,原理是:
1. 首先掃描所有特定后綴( '.png', '.jpg', 'jpeg' , '.imageset')等格式的圖片文件 或 圖片文件夾,獲取文件名,存入 allImageFiles 數(shù)組中;
2. 掃描所有代碼文件,逐行分析,若有引用 allImageFiles 內(nèi)圖片文件文件名的字符串,則將該字符串對(duì)應(yīng)的圖片文件列為有用圖片,存入 usedImageFiles 中;
3. 取 allImageFiles 與 usedImageFiles 的差集,即可獲得無用圖片集 unusedFiles ;
4. 輸出無用圖片集 unusedFiles 至文本內(nèi),并計(jì)算總圖片大小、無用圖片大小;
5. 可選地,可刪除所有無用圖片文件 及 圖片文件夾。
為避免誤刪,腳本執(zhí)行結(jié)束后,需要對(duì)刪除的圖片文件 review。
# coding=utf-8
import os, sys, codecs, re, shutil
reload(sys)
sys.setdefaultencoding('utf-8')
allImageFiles = set()
usedImageFiles = set()
fileCount = 0
'''
upload_failed@1x.png -> upload_failed
'''
removeSuffixReg = re.compile('\d$|@\dx$|\d@\dx$')
def transferImagefileToImageName(imageFile):
filename = os.path.basename(imageFile)
(filenameNoExtension, _) = os.path.splitext(filename)
imageName = removeSuffixReg.sub('', filenameNoExtension)
return imageName;
def scanAboundentImage(paths):
def checkImageCallback(fullPath, filename, extension):
global allImageFiles
allImageFiles.add(fullPath)
# 掃描無用圖片文件 (較通用方法)
# travel(paths, ['.png', '.jpg', 'jpeg', '.imageset'], checkImageCallback)
# 掃描 ['.png', '.jpg', 'jpeg'] 格式的無用圖片文件,及 ['.imageset'] 格式的無用圖片文件夾 (適用于 iOS)
travelFilesAndDirs(paths, ['.png', '.jpg', 'jpeg'], ['.imageset'], checkImageCallback)
checkIfImageHasUsed(paths, allImageFiles)
anylasisImageFilesOutput()
def anylasisImageFilesOutput():
global allImageFiles, usedImageFiles
unusedFiles = allImageFiles - usedImageFiles
unusedSize = 0
totalSize = 0
outputFile = open(os.path.join(os.getcwd(), "uselessImage.txt"), "w")
for aFile in allImageFiles:
if os.path.exists(aFile):
totalSize += countSize(aFile)
for unusedFile in unusedFiles:
if os.path.exists(unusedFile):
unusedSize += countSize(unusedFile)
# print(unusedFile)
# 無用文件列表:輸出至 -> 腳本所在目錄下的 文本文件中
print >> outputFile, unusedFile
# 刪除所有無用圖片 or 目錄,默認(rèn)禁用
#removeFilesOrDirs(unusedFile)
outputFile.close()
print('all files count is %s \nunused files count is %s' % (len(allImageFiles), len(unusedFiles)))
print('total size of file is %s KB \nunused file size is %s KB' % (totalSize / 1024, unusedSize / 1024))
def removeFilesOrDirs(path):
if os.path.exists(path):
if os.path.isfile(path):
os.remove(path)
elif os.path.isdir(path):
shutil.rmtree(path)
# 遍歷文件夾,計(jì)算文件大小
def countSize(path):
totalSize = 0
#判斷是否為目錄
if (os.path.isdir(path)):
# 遍歷目錄下所有文件根,目錄下的每一個(gè)文件夾(包含它自己), 產(chǎn)生3-元組 (dirpath, dirnames, filenames)【文件夾路徑, 文件夾名字, 文件名稱】
for r, ds, files in os.walk(path):
#遍歷所有文件
for file in files:
totalSize += os.path.getsize(os.path.join(r, file)) #獲取文件大小
else:
totalSize = os.path.getsize(path)
return totalSize
def checkIfImageHasUsed(paths, imageFiles):
def travelCallback(fullPath, filename, extension):
fileNameMapToCodeString = {}
for imageFile in imageFiles:
fileNameMapToCodeString[imageFile] = "\"%s" % transferImagefileToImageName(imageFile)
with codecs.open(fullPath, 'r', 'utf-8') as file:
codeLines = file.readlines()
for line in codeLines:
for imageFile, imageNameInCode in fileNameMapToCodeString.iteritems():
if imageNameInCode in line:
global usedImageFiles
usedImageFiles.add(imageFile)
travel(paths, ['.h', '.m', '.xib', '.storyboard'], travelCallback)
# 搜索所有“文件”,篩選符合后綴規(guī)則的文件
def travel(paths, fileExtensions, callback):
for path in paths:
for dirpath, dirnames, filenames in os.walk(path):
for filename in filenames:
fullPath = os.path.join(dirpath, filename)
(_, extension) = os.path.splitext(filename)
if os.path.exists(fullPath) and extension in fileExtensions:
callback(fullPath, filename, extension)
# 搜索所有“文件 + 文件夾”,篩選符合后綴規(guī)則的文件及文件夾。文件所在的文件夾若匹配,則文件不再匹配(不匹配 imageset 內(nèi)部的圖片文件)
def travelFilesAndDirs(paths, fileExtensions, dirExtensions, callback):
for path in paths:
for dirpath, dirnames, filenames in os.walk(path):
for filename in filenames:
fullPath = os.path.join(dirpath, filename)
(_, extension) = os.path.splitext(filename)
if os.path.exists(fullPath) and extension in fileExtensions and not isFileDirHasTargetExtensions(fullPath, dirExtensions):
callback(fullPath, filename, extension)
for dirname in dirnames:
fullPath = os.path.join(dirpath, dirname)
(_, extension) = os.path.splitext(dirname)
if os.path.exists(fullPath) and extension in dirExtensions:
callback(fullPath, dirname, extension)
def isFileDirHasTargetExtensions(path, dirExtensions):
parentDirName = os.path.basename(os.path.dirname(path))
(_, extension) = os.path.splitext(parentDirName)
return extension in dirExtensions
if sys.argv[1:]:
scanAboundentImage(sys.argv[1:])
else:
print "Please pass the paths to check as parameters to the script"
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