使用python腳本實現iOS圖片資源壓縮

最近公司有一個新的需求，要把代碼進行瘦身，這篇博客記錄下如何對圖片進行壓縮的。

原理：
寫一個腳本，把圖片文件夾'.xcassets'的全部文件遍歷出來，而後使用一個第三方的算法把圖片壓縮後再替換回去

成果：

因爲在該工程中的png圖片已經壓縮過了，此次只壓縮了jgp爲後綴的圖片，能夠看出，仍是有效果的

代碼以下：

import os
import tinify
import shutil

tinify.key = '5J54hg59ysAuhHFPxXB*******'

source_file = '/Users/user/Desktop/Hotel.xcassets'
dest_file = '/Users/user/Desktop/destimages'


def getPngFileNames(source_dir):
    pngDicts = []
    for (parent, dirnames, filenames) in os.walk(source_dir):
        for filename in filenames:
            if filename.endswith('.jpg'):
                tempDict = {}
                tempDict['name'] = filename
                tempDict['path'] = os.path.join(parent, filename)
                pngDicts.append(tempDict)

    return pngDicts

def compressImages(uncompress_images):
    for pngDict in uncompress_images:
        source = tinify.from_file(pngDict['path'])
        source.to_file(os.path.join(dest_file, pngDict['name']))

def replace_file(new_path, old_path):
    pngs = getPngFileNames(source_file)
    for name in os.listdir(new_path):
        for pngDict in pngs:
            if pngDict['name'] == name:
                shutil.copyfile(os.path.join(new_path, name), pngDict['path'])


if __name__ == '__main__':
    replace_file(dest_file, source_file)
    # pngs = getPngFileNames(source_file)
    # compressImages(pngs)
    print('done')