import logging import os import re import sys from datetime import datetime from shutil import move logger = logging.getLogger('default') # When using py2exe or py2app, the variable frozen is added to the sys # namespace. This can be used to setup a different code path for # binary distributions vs source distributions. frozen = getattr(sys, 'frozen', None) def lookupExeFolder(): """Returns executable folder path""" if frozen: exeFolder = ( # targetdir/Bitmessage.app/Contents/MacOS/Bitmessage os.path.dirname(sys.executable).split(os.path.sep)[0] + os.path.sep if frozen == "macosx_app" else os.path.dirname(sys.executable) + os.path.sep) elif __file__: exeFolder = os.path.dirname(__file__) + os.path.sep else: exeFolder = '' return exeFolder def lookupAppdataFolder(): """Returns path of the folder where application data is stored""" APPNAME = "PyBitmessage" dataFolder = os.environ.get('BITMESSAGE_HOME') if dataFolder: if dataFolder[-1] not in (os.path.sep, os.path.altsep): dataFolder += os.path.sep elif sys.platform == 'darwin': try: dataFolder = os.path.join( os.environ['HOME'], 'Library/Application Support/', APPNAME ) + '/' # FIXME: should also be os.path.sep except KeyError: sys.exit( 'Could not find home folder, please report this message' ' and your OS X version to the BitMessage Github.') elif 'win32' in sys.platform or 'win64' in sys.platform: dataFolder = os.path.join( os.environ['APPDATA'].decode( sys.getfilesystemencoding(), 'ignore'), APPNAME ) + os.path.sep else: try: dataFolder = os.path.join(os.environ['XDG_CONFIG_HOME'], APPNAME) except KeyError: dataFolder = os.path.join(os.environ['HOME'], '.config', APPNAME) # Migrate existing data to the proper location # if this is an existing install try: move(os.path.join(os.environ['HOME'], '.%s' % APPNAME), dataFolder) logger.info('Moving data folder to %s', dataFolder) except IOError: # Old directory may not exist. pass dataFolder = dataFolder + os.path.sep return dataFolder def codePath(): """Returns path to the program sources""" if not frozen: return os.path.dirname(__file__) return ( os.environ.get('RESOURCEPATH') if frozen == "macosx_app" else sys._MEIPASS) def tail(f, lines=20): """Returns last lines in the f file object""" total_lines_wanted = lines BLOCK_SIZE = 1024 f.seek(0, 2) block_end_byte = f.tell() lines_to_go = total_lines_wanted block_number = -1 # blocks of size BLOCK_SIZE, in reverse order starting # from the end of the file blocks = [] while lines_to_go > 0 and block_end_byte > 0: if (block_end_byte - BLOCK_SIZE > 0): # read the last block we haven't yet read f.seek(block_number * BLOCK_SIZE, 2) blocks.append(f.read(BLOCK_SIZE)) else: # file too small, start from begining f.seek(0, 0) # only read what was not read blocks.append(f.read(block_end_byte)) lines_found = blocks[-1].count('\n') lines_to_go -= lines_found block_end_byte -= BLOCK_SIZE block_number -= 1 all_read_text = ''.join(reversed(blocks)) return '\n'.join(all_read_text.splitlines()[-total_lines_wanted:]) def lastCommit(): """ Returns last commit information as dict with 'commit' and 'time' keys """ githeadfile = os.path.join(codePath(), '..', '.git', 'logs', 'HEAD') result = {} if os.path.isfile(githeadfile): try: with open(githeadfile, 'rt') as githead: line = tail(githead, 1) result['commit'] = line.split()[1] result['time'] = datetime.fromtimestamp( float(re.search(r'>\s*(.*?)\s', line).group(1)) ) except (IOError, AttributeError, TypeError): pass return result