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We are good now except for the shell_utility function which needs to be
refactored.
This commit is contained in:
Joel Schaerer 2011-01-04 21:00:59 +01:00
parent b2e010e69a
commit 4e579d5f63
1 changed files with 133 additions and 117 deletions
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116
autojump
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@ -1,19 +1,23 @@
#!/usr/bin/env python #!/usr/bin/env python
#Copyright Joel Schaerer 2008-2010 """Copyright Joel Schaerer 2008-2010
#This file is part of autojump This file is part of autojump
#autojump is free software: you can redistribute it and/or modify autojump is free software: you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by it under the terms of the GNU General Public License as published by
#the Free Software Foundation, either version 3 of the License, or the Free Software Foundation, either version 3 of the License, or
#(at your option) any later version. (at your option) any later version.
#
#autojump is distributed in the hope that it will be useful, autojump is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
#GNU General Public License for more details. GNU General Public License for more details.
#
#You should have received a copy of the GNU General Public License You should have received a copy of the GNU General Public License
#along with autojump. If not, see <http://www.gnu.org/licenses/>. along with autojump. If not, see <http://www.gnu.org/licenses/>.
Autojump is a small tool that maintains a database of your most
used directories, and finds the best match to help you jump to
frequently used places."""
from __future__ import division, print_function from __future__ import division, print_function
@ -27,7 +31,6 @@ from sys import argv, stderr, version_info
from tempfile import NamedTemporaryFile from tempfile import NamedTemporaryFile
from operator import itemgetter from operator import itemgetter
import os import os
import signal
MAX_KEYWEIGHT = 1000 MAX_KEYWEIGHT = 1000
MAX_STORED_PATHS = 600 MAX_STORED_PATHS = 600
COMPLETION_SEPARATOR = '__' COMPLETION_SEPARATOR = '__'
@ -44,30 +47,32 @@ def dicadd(dic, key, increment=1):
dic[key] = dic.get(key, 0.)+increment dic[key] = dic.get(key, 0.)+increment
def save(path_dict, dic_file): def save(path_dict, dic_file):
f = NamedTemporaryFile(dir=CONFIG_DIR, delete=False) """Save the database in an atomic way, and preserve
pickle.dump(path_dict, f, -1) a backup file."""
f.flush() temp = NamedTemporaryFile(dir=CONFIG_DIR, delete=False)
os.fsync(f) pickle.dump(path_dict, temp, -1)
f.close() temp.flush()
os.fsync(temp)
temp.close()
#cf. http://thunk.org/tytso/blog/2009/03/15/dont-fear-the-fsync/ #cf. http://thunk.org/tytso/blog/2009/03/15/dont-fear-the-fsync/
os.rename(f.name, dic_file) os.rename(temp.name, dic_file)
try: #backup file try: #backup file
import time import time
if (not os.path.exists(dic_file+".bak") or if (not os.path.exists(dic_file+".bak") or
time.time()-os.path.getmtime(dic_file+".bak")>86400): time.time()-os.path.getmtime(dic_file+".bak")>86400):
import shutil import shutil
shutil.copy(dic_file, dic_file+".bak") shutil.copy(dic_file, dic_file+".bak")
except OSError as e: except OSError as ex:
print("Error while creating backup autojump file. (%s)" % e, print("Error while creating backup autojump file. (%s)" %
file=stderr) ex, file=stderr)
def forget(path_dict, dic_file): def forget(path_dict, dic_file):
"""Gradually forget about directories. Only call """Gradually forget about directories. Only call
from the actual jump since it can take time""" from the actual jump since it can take time"""
keyweight = sum(path_dict.values()) keyweight = sum(path_dict.values())
if keyweight>MAX_KEYWEIGHT: if keyweight > MAX_KEYWEIGHT:
for k in path_dict.keys(): for k in path_dict.keys():
path_dict[k]*=0.9*MAX_KEYWEIGHT/keyweight path_dict[k] *= 0.9 * MAX_KEYWEIGHT / keyweight
save(path_dict, dic_file) save(path_dict, dic_file)
def clean_dict(sorted_dirs, path_dict): def clean_dict(sorted_dirs, path_dict):
@ -75,14 +80,16 @@ def clean_dict(sorted_dirs, path_dict):
Returns True if keys were deleted""" Returns True if keys were deleted"""
if len(sorted_dirs) > MAX_STORED_PATHS: if len(sorted_dirs) > MAX_STORED_PATHS:
#remove 25 more than needed, to avoid doing it every time #remove 25 more than needed, to avoid doing it every time
for dir, dummy in sorted_dirs[MAX_STORED_PATHS-25:]: for path, dummy in sorted_dirs[MAX_STORED_PATHS-25:]:
del path_dict[dir] del path_dict[path]
return True return True
else: return False else: return False
def match(path, pattern, ignore_case=False, only_end=False): def match(path, pattern, ignore_case=False, only_end=False):
"""Check whether a path matches a particular pattern"""
try: try:
if os.path.realpath(os.curdir) == path : return False if os.path.realpath(os.curdir) == path :
return False
#Sometimes the current path doesn't exist anymore. #Sometimes the current path doesn't exist anymore.
#In that case, jump if possible. #In that case, jump if possible.
except OSError: except OSError:
@ -92,27 +99,30 @@ def match(path, pattern, ignore_case=False, only_end=False):
else: else:
match_string = path match_string = path
if ignore_case: if ignore_case:
match=(match_string.lower().find(pattern.lower()) != -1) does_match = (match_string.lower().find(pattern.lower()) != -1)
else: else:
match = (match_string.find(pattern) != -1) does_match = (match_string.find(pattern) != -1)
#return True if there is a match and the path exists #return True if there is a match and the path exists
#(useful in the case of external drives, for example) #(useful in the case of external drives, for example)
return match and os.path.exists(path) return does_match and os.path.exists(path)
def find_matches(dirs, patterns, result_list, ignore_case, max_matches): def find_matches(dirs, patterns, result_list, ignore_case, max_matches):
"""Find max_matches paths that match the pattern, """Find max_matches paths that match the pattern,
and add them to the result_list""" and add them to the result_list"""
for path, count in dirs: for path, count in dirs:
if len(result_list) >= max_matches : break if len(result_list) >= max_matches :
break
#For the last pattern, only match the end of the pattern #For the last pattern, only match the end of the pattern
if all(match(path, p, ignore_case, if all(match(path, p, ignore_case,
only_end=(n == len(patterns)-1)) for n, p in enumerate(patterns)): only_end=(n == len(patterns)-1)) for n, p in enumerate(patterns)):
uniqadd(result_list, path) uniqadd(result_list, path)
def open_dic(dic_file, error_recovery=False): def open_dic(dic_file, error_recovery=False):
"""Try hard to open the database file, recovering
from backup if needed. """
try: try:
aj_file = open(dic_file, 'rb') aj_file = open(dic_file, 'rb')
if version_info[0]>2: if version_info[0] > 2:
#encoding is only specified for python2.x compatibility #encoding is only specified for python2.x compatibility
path_dict = pickle.load(aj_file, encoding="utf-8") path_dict = pickle.load(aj_file, encoding="utf-8")
else: else:
@ -128,40 +138,42 @@ def open_dic(dic_file, error_recovery=False):
return open_dic(dic_file, True) return open_dic(dic_file, True)
else: return {} #if everything fails, return an empty file else: return {} #if everything fails, return an empty file
#Main code def shell_utility():
try: """Run this when autojump is called as a shell utility"""
try:
optlist, args = getopt.getopt(argv[1:], 'a', optlist, args = getopt.getopt(argv[1:], 'a',
['stat', 'import', 'completion', 'bash']) ['stat', 'import', 'completion', 'bash'])
except getopt.GetoptError as e: except getopt.GetoptError as ex:
print("Unknown command line argument: %s" % e) print("Unknown command line argument: %s" % ex)
exit(1) exit(1)
if CONFIG_DIR == os.path.expanduser("~"): if CONFIG_DIR == os.path.expanduser("~"):
dic_file = CONFIG_DIR+"/.autojump_py" dic_file = CONFIG_DIR+"/.autojump_py"
else: else:
dic_file = CONFIG_DIR+"/autojump_py" dic_file = CONFIG_DIR+"/autojump_py"
path_dict = open_dic(dic_file) path_dict = open_dic(dic_file)
if ('-a', '') in optlist: if ('-a', '') in optlist:
# The home dir can be reached quickly by "cd" # The home dir can be reached quickly by "cd"
# and may interfere with other directories # and may interfere with other directories
if(args[-1] != os.path.expanduser("~")): if(args[-1] != os.path.expanduser("~")):
dicadd(path_dict, args[-1]) dicadd(path_dict, args[-1])
save(path_dict, dic_file) save(path_dict, dic_file)
elif ('--stat', '') in optlist: elif ('--stat', '') in optlist:
a = list(path_dict.items()) paths = list(path_dict.items())
a.sort(key=itemgetter(1)) paths.sort(key=itemgetter(1))
for path, count in a[-100:]: for path, count in paths[-100:]:
print("%.1f:\t%s" % (count, path)) print("%.1f:\t%s" % (count, path))
print("Total key weight: %d. Number of stored paths: %d" % print("Total key weight: %d. Number of stored paths: %d" %
(sum(path_dict.values()), len(a))) (sum(path_dict.values()), len(paths)))
elif ('--import', '') in optlist: elif ('--import', '') in optlist:
for i in open(args[-1]).readlines(): for i in open(args[-1]).readlines():
dicadd(path_dict, i[:-1]) dicadd(path_dict, i[:-1])
pickle.dump(path_dict, open(dic_file, 'w'), -1) pickle.dump(path_dict, open(dic_file, 'w'), -1)
else: else:
import re import re
completion = False completion = False
userchoice = -1 #i if the pattern is of the form __pattern__i, otherwise -1 #userchoice is i if the pattern is __pattern__i, otherwise -1
userchoice = -1
results = [] results = []
if ('--completion', '') in optlist: if ('--completion', '') in optlist:
completion = True completion = True
@ -216,3 +228,7 @@ else:
COMPLETION_SEPARATOR, n+1, COMPLETION_SEPARATOR, r) COMPLETION_SEPARATOR, n+1, COMPLETION_SEPARATOR, r)
for n, r in enumerate(results[:8])))) for n, r in enumerate(results[:8]))))
elif results: print(quotes+results[0]+quotes) elif results: print(quotes+results[0]+quotes)
if __name__ == "__main__":
shell_utility()