43 lines
1.3 KiB
Python
43 lines
1.3 KiB
Python
import config
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import shutil
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import time
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import re
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import os
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def getVersion(db):
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cursor = db.execute('PRAGMA user_version')
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return cursor.fetchone()[0]
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def update(saveddata_engine):
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dbVersion = getVersion(saveddata_engine)
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appVersion = 0
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for fname in os.listdir(os.path.join(os.path.dirname(__file__), "migrations")):
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m = re.match("^upgrade(?P<index>\d+)\.py$", fname)
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if not m:
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continue
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index = int(m.group("index"))
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appVersion = max(appVersion, index)
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if dbVersion == appVersion:
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return
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if dbVersion < appVersion:
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# Automatically backup database
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toFile = "%s/saveddata_migration_%d-%d_%s.db"%(
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config.savePath,
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dbVersion,
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appVersion,
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time.strftime("%Y%m%d_%H%M%S"))
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shutil.copyfile(config.saveDB, toFile)
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for version in xrange(dbVersion, appVersion):
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module = __import__("eos.db.migrations.upgrade{}".format(version + 1), fromlist=True)
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upgrade = getattr(module, "upgrade", False)
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if upgrade:
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upgrade(saveddata_engine)
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# when all is said and done, set version to current
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saveddata_engine.execute("PRAGMA user_version = {}".format(appVersion))
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