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Code Issues Releases Wiki Activity

minor refactor

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This commit is contained in:
William Ting 2013-07-06 20:23:34 -05:00
parent d692bc644a
commit 72b8c0a660
1 changed files with 67 additions and 70 deletions
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137
bin/autojump
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@ -41,7 +41,7 @@ except ImportError:
class Database:
"""
Object for interfacing with autojump database file.
Abstraction for interfacing with with autojump database file.
"""
def __init__(self, config):
@ -53,42 +53,6 @@ class Database:
def __len__(self):
return len(self.data)
def add(self, path, increment=10):
"""
Increase weight of existing paths or initialize new ones to 10.
"""
if path == self.config['home']:
return
path = path.rstrip(os.sep)
if self.data[path]:
self.data[path] = math.sqrt((self.data[path]**2) + (increment**2))
else:
self.data[path] = increment
self.save()
def decrease(self, path, increment=15):
"""
Decrease weight of existing path. Unknown ones are ignored.
"""
if path == self.config['home']:
return
if self.data[path] < increment:
self.data[path] = 0
else:
self.data[path] -= increment
self.save()
def get_weight(self, path):
"""
Return path weight.
"""
return self.data[path]
def load(self, error_recovery = False):
"""
Open database file, recovering from backup if needed.
@ -123,39 +87,6 @@ class Database:
shutil.copy(self.filename + '.bak', self.filename)
return self.load(True)
def maintenance(self):
"""
Decay weights by 10%, periodically remove bottom 10% entries.
"""
try:
items = self.data.iteritems()
except AttributeError:
items = self.data.items()
for path, _ in items:
self.data[path] *= 0.9
if len(self.data) > self.config['max_paths']:
remove_cnt = int(0.1 * len(self.data))
for path in sorted(self.data, key=self.data.get)[:remove_cnt]:
del self.data[path]
self.save()
def purge(self):
"""
Deletes all entries that no longer exist on system.
"""
removed = []
for path in list(self.data.keys()):
if not os.path.exists(path):
removed.append(path)
del self.data[path]
self.save()
return removed
def save(self):
"""
Save database atomically and preserve backup, creating new database if
@ -196,6 +127,72 @@ class Database:
print("Error while creating backup autojump file. (%s)" %
ex, file=sys.stderr)
def add(self, path, increment=10):
"""
Increase weight of existing paths or initialize new ones to 10.
"""
if path == self.config['home']:
return
path = path.rstrip(os.sep)
if self.data[path]:
self.data[path] = math.sqrt((self.data[path]**2) + (increment**2))
else:
self.data[path] = increment
self.save()
def decrease(self, path, increment=15):
"""
Decrease weight of existing path. Unknown paths are ignored.
"""
if path == self.config['home']:
return
if self.data[path] < increment:
self.data[path] = 0
else:
self.data[path] -= increment
self.save()
def get_weight(self, path):
return self.data[path]
def maintenance(self):
"""
Decay weights by 10%, periodically remove bottom 10% entries.
"""
try:
items = self.data.iteritems()
except AttributeError:
items = self.data.items()
for path, _ in items:
self.data[path] *= 0.9
if len(self.data) > self.config['max_paths']:
remove_cnt = int(0.1 * len(self.data))
for path in sorted(self.data, key=self.data.get)[:remove_cnt]:
del self.data[path]
self.save()
def purge(self):
"""
Remove non-existent paths.
"""
removed = []
for path in list(self.data.keys()):
if not os.path.exists(path):
removed.append(path)
del self.data[path]
self.save()
return removed
def set_defaults():
config = {}