从 XCode 项目中删除未使用的资源

Question

我正在开发 iOs 应用程序，在这个应用程序中，我每天都会对应用程序设计进行重大更改，因此我的应用程序代码将达到大约 200 Mb。 但是在这段代码中，我有大量未使用的图像可用。 所以我想从我的 XCode 项目中删除这些图像，这样我就可以减少我的项目代码大小。

我使用了一些已经在 stackoverflow.com 上提供的脚本，但我发现该脚本也删除了使用过的图像，因此不可靠。 我也使用过名为“Slender”的应用程序。 它真的很好，但它是试用版，所以我不能再使用它了。

所以请任何人建议我从 xCode 项目中删除未使用的图像的有效方法（任何应用程序）。

Answer 1

Unused 将帮助您在 xCode 项目中找到未使用的资源https://github.com/jeffhodnett/Unused

Answer 2

我在这里回答了一个类似的问题： https : //stackoverflow.com/a/62078601/217586

添加相同的细节，在这里：

我创建了一个 python 脚本来识别未使用的图像： 'unused_assets.py' @ gist 。 它可以像这样使用：

python3 unused_assets.py '/Users/DevK/MyProject' '/Users/DevK/MyProject/MyProject/Assets/Assets.xcassets'

以下是使用脚本的一些规则：

• 将项目文件夹路径作为第一个参数传递，资产文件夹路径作为第二个参数传递很重要
• 假设所有图像都保存在 Assets.xcassets 文件夹中，并在 swift 文件或故事板中使用

第一个版本的限制：

• 不适用于目标 c 文件

随着时间的推移，我会根据反馈尝试改进它，但是第一个版本应该对大多数人都有好处。

请在代码下方找到。 代码应该是不言自明的，因为我已为每个重要步骤添加了适当的注释。

# Usage e.g.: python3 unused_assets.py '/Users/DevK/MyProject' '/Users/DevK/MyProject/MyProject/Assets/Assets.xcassets'
# It is important to pass project folder path as first argument, assets folder path as second argument
# It is assumed that all the images are maintained within Assets.xcassets folder and are used either within swift files or within storyboards

"""
@author = "Devarshi Kulshreshtha"
@copyright = "Copyright 2020, Devarshi Kulshreshtha"
@license = "GPL"
@version = "1.0.1"
@contact = "kulshreshtha.devarshi@gmail.com"
"""

import sys
import glob
from pathlib import Path
import mmap
import os
import time

# obtain start time
start = time.time()

arguments = sys.argv

# pass project folder path as argument 1
projectFolderPath = arguments[1].replace("\\", "") # replacing backslash with space
# pass assets folder path as argument 2
assetsPath = arguments[2].replace("\\", "") # replacing backslash with space

print(f"assetsPath: {assetsPath}")
print(f"projectFolderPath: {projectFolderPath}")

# obtain all assets / images 
# obtain paths for all assets

assetsSearchablePath = assetsPath + '/**/*.imageset'  #alternate way to append: fr"{assetsPath}/**/*.imageset"
print(f"assetsSearchablePath: {assetsSearchablePath}")

imagesNameCountDict = {} # empty dict to store image name as key and occurrence count
for imagesetPath in glob.glob(assetsSearchablePath, recursive=True):
    # storing the image name as encoded so that we save some time later during string search in file 
    encodedImageName = str.encode(Path(imagesetPath).stem)
    # initializing occurrence count as 0
    imagesNameCountDict[encodedImageName] = 0

print("Names of all assets obtained")

# search images in swift files
# obtain paths for all swift files

swiftFilesSearchablePath = projectFolderPath + '/**/*.swift' #alternate way to append: fr"{projectFolderPath}/**/*.swift"
print(f"swiftFilesSearchablePath: {swiftFilesSearchablePath}")

for swiftFilePath in glob.glob(swiftFilesSearchablePath, recursive=True):
    with open(swiftFilePath, 'rb', 0) as file, \
        mmap.mmap(file.fileno(), 0, access=mmap.ACCESS_READ) as s:
        # search all the assests within the swift file
        for encodedImageName in imagesNameCountDict:
            # file search
            if s.find(encodedImageName) != -1:
                # updating occurrence count, if found 
                imagesNameCountDict[encodedImageName] += 1

print("Images searched in all swift files!")

# search images in storyboards
# obtain path for all storyboards

storyboardsSearchablePath = projectFolderPath + '/**/*.storyboard' #alternate way to append: fr"{projectFolderPath}/**/*.storyboard"
print(f"storyboardsSearchablePath: {storyboardsSearchablePath}")
for storyboardPath in glob.glob(storyboardsSearchablePath, recursive=True):
    with open(storyboardPath, 'rb', 0) as file, \
        mmap.mmap(file.fileno(), 0, access=mmap.ACCESS_READ) as s:
        # search all the assests within the storyboard file
        for encodedImageName in imagesNameCountDict:
            # file search
            if s.find(encodedImageName) != -1:
                # updating occurrence count, if found
                imagesNameCountDict[encodedImageName] += 1

print("Images searched in all storyboard files!")
print("Here is the list of unused assets:")

# printing all image names, for which occurrence count is 0
print('\n'.join({encodedImageName.decode("utf-8", "strict") for encodedImageName, occurrenceCount in imagesNameCountDict.items() if occurrenceCount == 0}))

print(f"Done in {time.time() - start} seconds!")