BitCode脚本

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在包体积优化中，需要统计不支持BitCode pod库有哪些，在pod库数量较多的情况下，使用脚本节省统计时间。

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#使用检查的命令
otool -l QiBitcode/QiBitcode.framework/QiBitcode | grep __LLVM
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#coding:utf-8
import glob, os
import subprocess
import commands
# os.chdir("/Users/jinying.zhou.o/Desktop/BaoTiJi")

fileList = []          ## 存放.a文件的数组
architectures = ['armv7','arm64','i386','x86_64']
# architectures = ['armv7','arm64']
unsupports = []
rootPath = '/Users/jinying.zhou.o/Desktop/testbitcode'

def checkBitCode(thinStr,unzipStr):  
	os.system(thinStr)

	# 执行解压操作
	os.chdir(rootPath)
	# 新建文件夹
	folder = endingFile 
    #获取此py文件路径，在此路径选创建在new_folder文件夹中的test文件夹 
	if not os.path.exists(folder):
		os.makedirs(folder)
	os.chdir(folder)
	os.system(unzipStr)
	# 在当前文件夹下遍历解压获得的.o
	# for tempFile in glob.glob("*.txt"):

	for tempFile in os.listdir(folder):
		if tempFile.endswith(".o"):
			checkStr = 'otool -l ' + tempFile + ' | grep bitcode'
			output = commands.getstatusoutput(checkStr)  
			keyword = 'bitcode'
			# print output
			if keyword not in output[1]:
				if folder not in unsupports: 
					print checkStr
					unsupports.append(folder)
					break

for root, dirs, files in os.walk(rootPath):
    for file in files:
        if file.endswith(".a"):
              fileList.append(os.path.join(root, file))

for file in fileList:
	print fileList
	endingFile = file.rstrip('.a')
	# 获取架构路径
	for architecture in architectures:
		thinStr = 'lipo -thin ' + architecture + ' '  + file + ' -output ' + endingFile + '-' + architecture + '.a'
		unzipStr = 'ar -x ' + endingFile + '-' + architecture + '.a'
		checkBitCode(thinStr,unzipStr)
		# print(unzipStr)

print('====================') 		
print(unsupports)

通过此脚本排查出不支持BitCode的.a 及 Framework，不过还是要以项目中实际Build的为准

参考链接：

iOS 了解Xcode Bitcode