49 lines
2.2 KiB
Python
Executable file
49 lines
2.2 KiB
Python
Executable file
#!/usr/bin/env python
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import os
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import sys
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import subprocess
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#optimize png, remove various color profiles, remove ancillary chunks (alla) and text chunks (text)
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#pngcrush -brute -ow -rem gAMA -rem cHRM -rem iCCP -rem sRGB -rem alla -rem text
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folders = ["src/qt/res/movies", "src/qt/res/icons", "src/qt/res/images"]
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basePath = subprocess.check_output("git rev-parse --show-toplevel", shell=True).rstrip('\n')
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totalSaveBytes = 0
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outputArray = []
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for folder in folders:
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absFolder=os.path.join(basePath, folder)
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for file in os.listdir(absFolder):
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extension = os.path.splitext(file)[1]
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if extension.lower() == '.png':
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print("optimizing "+file+"..."),
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file_path = os.path.join(absFolder, file)
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fileMetaMap = {'file' : file, 'osize': os.path.getsize(file_path), 'sha256Old' : subprocess.check_output("openssl dgst -sha256 "+file_path, shell=True).rstrip('\n')};
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pngCrushOutput = ""
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try:
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pngCrushOutput = subprocess.check_output("pngcrush -brute -ow -rem gAMA -rem cHRM -rem iCCP -rem sRGB -rem alla -rem text "+file_path+" >/dev/null 2>&1", shell=True).rstrip('\n')
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except:
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print "pngcrush is not installed, aborting..."
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sys.exit(0)
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#verify
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if "Not a PNG file" in subprocess.check_output("pngcrush -n -v "+file_path+" >/dev/null 2>&1", shell=True):
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print "PNG file "+file+" is corrupted after crushing, check out pngcursh version"
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sys.exit(1)
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fileMetaMap['sha256New'] = subprocess.check_output("openssl dgst -sha256 "+file_path, shell=True).rstrip('\n')
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fileMetaMap['psize'] = os.path.getsize(file_path)
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outputArray.append(fileMetaMap)
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print("done\n"),
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print "summary:\n+++++++++++++++++"
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for fileDict in outputArray:
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oldHash = fileDict['sha256Old'].split("= ")[1]
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newHash = fileDict['sha256New'].split("= ")[1]
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totalSaveBytes += fileDict['osize'] - fileDict['psize']
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print fileDict['file']+"\n size diff from: "+str(fileDict['osize'])+" to: "+str(fileDict['psize'])+"\n old sha256: "+oldHash+"\n new sha256: "+newHash+"\n"
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print "completed. Total reduction: "+str(totalSaveBytes)+" bytes" |