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2aee09c5ab
1874058Make base58 python contrib code work with python3 (Evan Klitzke)bc6fdf2Change all python files to use Python3 (John Newbery) Pull request description: Following discussion here: https://github.com/bitcoin/bitcoin/pull/11843#issuecomment-351033742 It's easier for maintainers if all python tools/scripts support only a single version of Python. There are only a few scripts that aren't explicitly python3 at this point, so this PR changes those remaining scripts to explicitly require python3. Tree-SHA512: 5d38eef6e0fc7d8515e23a1f4c75e8b4160fd0fe23cba52a1f41689b114e54a9e503e0724829e8b41982ef98f2d113df80d9e238213b74f09ceaed0344a19e24
81 lines
3.4 KiB
Python
Executable File
81 lines
3.4 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2014-2015 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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'''
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Run this script every time you change one of the png files. Using pngcrush, it will optimize the png files, 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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'''
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import os
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import sys
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import subprocess
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import hashlib
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from PIL import Image # pip3 install Pillow
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def file_hash(filename):
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'''Return hash of raw file contents'''
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with open(filename, 'rb') as f:
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return hashlib.sha256(f.read()).hexdigest()
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def content_hash(filename):
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'''Return hash of RGBA contents of image'''
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i = Image.open(filename)
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i = i.convert('RGBA')
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data = i.tobytes()
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return hashlib.sha256(data).hexdigest()
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pngcrush = 'pngcrush'
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git = 'git'
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folders = [
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"src/qt/res/movies",
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"src/qt/res/icons",
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"src/qt/res/images",
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"share/pixmaps"
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]
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basePath = subprocess.check_output([git, 'rev-parse', '--show-toplevel'], universal_newlines=True).rstrip('\n')
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totalSaveBytes = 0
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noHashChange = True
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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 {}...".format(file), end =' ')
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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' : file_hash(file_path)}
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fileMetaMap['contentHashPre'] = content_hash(file_path)
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try:
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subprocess.call([pngcrush, "-brute", "-ow", "-rem", "gAMA", "-rem", "cHRM", "-rem", "iCCP", "-rem", "sRGB", "-rem", "alla", "-rem", "text", file_path],
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stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
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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], stderr=subprocess.STDOUT, universal_newlines=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'] = file_hash(file_path)
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fileMetaMap['contentHashPost'] = content_hash(file_path)
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if fileMetaMap['contentHashPre'] != fileMetaMap['contentHashPost']:
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print("Image contents of PNG file {} before and after crushing don't match".format(file))
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sys.exit(1)
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fileMetaMap['psize'] = os.path.getsize(file_path)
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outputArray.append(fileMetaMap)
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print("done")
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print("summary:\n+++++++++++++++++")
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for fileDict in outputArray:
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oldHash = fileDict['sha256Old']
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newHash = fileDict['sha256New']
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totalSaveBytes += fileDict['osize'] - fileDict['psize']
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noHashChange = noHashChange and (oldHash == newHash)
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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. Checksum stable: "+str(noHashChange)+". Total reduction: "+str(totalSaveBytes)+" bytes")
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