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migrate database and state file

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This commit is contained in:
Adrian Sampson 2012-12-30 11:36:13 -08:00
parent 56c379f36d
commit 16bb655d87
1 changed files with 60 additions and 5 deletions
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65
beets/ui/migrate.py
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@ -49,6 +49,16 @@ def grouper(n, iterable):
args = [iter(iterable)] * n
return itertools.izip_longest(*args)
def _displace(fn):
"""Move a file aside using a timestamp suffix so a new file can be
put in its place.
"""
util.move(
fn,
u'{0}.old.{1}'.format(fn, int(time.time())),
True
)
def default_paths():
"""Produces the appropriate default config and library database
paths for the current system. On Unix, this is always in ~. On
@ -227,11 +237,7 @@ def migrate_config(replace=False):
log.debug(u'moving old config aside: {0}'.format(
util.displayable_path(destfn)
))
util.move(
destfn,
u'{0}.old.{1}'.format(destfn, int(time.time())),
True
)
_displace(destfn)
else:
# File exists and we won't replace it. We're done.
return
@ -265,7 +271,56 @@ def migrate_config(replace=False):
width=1000,
)
def migrate_db(replace=False):
"""Copy the beets library database file to the new location (e.g.,
from ~/.beetsmusic.blb to ~/.config/beets/library.db).
"""
_, srcfn = default_paths()
destfn = beets.config['library'].as_filename()
if not os.path.exists(srcfn) or srcfn == destfn:
# Old DB does not exist or we're configured to point to the same
# database. Do nothing.
return
if os.path.exists(destfn):
if replace:
log.debug(u'moving old database aside: {0}'.format(
util.displayable_path(destfn)
))
_displace(destfn)
else:
return
log.info(u'copying database from {0} to {1}'.format(
util.displayable_path(srcfn), util.displayable_path(destfn)
))
util.copy(srcfn, destfn)
def migrate_state(replace=False):
"""Copy the beets runtime state file from the old path (i.e.,
~/.beetsstate) to the new path (i.e., ~/.config/beets/state.pickle).
"""
srcfn = os.path.expanduser('~/.beetsstate')
if not os.path.exists(srcfn):
return
destfn = beets.config['statefile'].as_filename()
if os.path.exists(destfn):
if replace:
_displace(destfn)
else:
return
log.info(u'copying state file from {0} to {1}'.format(
util.displayable_path(srcfn), util.displayable_path(destfn)
))
util.copy(srcfn, destfn)
migrate_cmd = ui.Subcommand('migrate', help='convert legacy config')
def migrate_func(lib, opts, args):
migrate_config(replace=True)
migrate_db(replace=True)
migrate_state(replace=True)
migrate_cmd.func = migrate_func