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Don't check path existence when displaying tab completion menu.

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The check is to avoided since tab menu paths may be on slow IO devices (network
mounts, low power devices, etc).

Closes #258.
This commit is contained in:
William Ting 2014-01-28 23:55:15 -06:00
parent 1f045c2658
commit 681068a2bc
1 changed files with 36 additions and 20 deletions
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56
bin/autojump
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@ -160,32 +160,40 @@ def detect_smartcase(needles):
return not any(imap(has_uppercase, needles))
def find_matches(entries, needles):
def find_matches(entries, needles, check_entries=True):
"""Return an iterator to matching entries."""
ignore_case = detect_smartcase(needles)
try:
os.getcwdu()
not_cwd = lambda entry: entry.path != os.getcwdu()
pwd = os.getcwdu()
except OSError:
# tautology if current working directory no longer exists
not_cwd = lambda _: True
pwd = None
# using closure and comparing vs string to prevent constantly hitting hdd
def not_cwd(entry):
return entry.path != pwd
if check_entries:
exists = lambda entry: os.path.exists(entry.path)
else:
exists = lambda _: True
data = sorted(
ifilter(not_cwd, entries),
entries,
key=attrgetter('weight'),
reverse=True)
ignore_case = detect_smartcase(needles)
exists = lambda entry: os.path.exists(entry.path)
return ifilter(
exists,
chain(
match_consecutive(needles, data, ignore_case),
match_fuzzy(needles, data, ignore_case),
match_anywhere(needles, data, ignore_case),
# default return value so calling shell functions have an
# argument to `cd` to
[Entry('.', 0)]))
not_cwd,
ifilter(
exists,
chain(
match_consecutive(needles, data, ignore_case),
match_fuzzy(needles, data, ignore_case),
match_anywhere(needles, data, ignore_case),
# default return value so calling shell functions have an
# argument to `cd` to
[Entry('.', 0)])))
def handle_tab_completion(needle, entries):
@ -198,17 +206,25 @@ def handle_tab_completion(needle, entries):
print_local(tab_path)
elif tab_index:
get_ith_path = lambda i, iterable: last(take(i, iterable)).path
print_local(get_ith_path(tab_index, find_matches(entries, tab_needle)))
print_local(get_ith_path(
tab_index,
find_matches(entries, tab_needle, check_entries=False)))
elif tab_needle:
# found partial tab completion entry
print_tab_menu(
tab_needle,
take(TAB_ENTRIES_COUNT, find_matches(entries, tab_needle)),
take(TAB_ENTRIES_COUNT, find_matches(
entries,
tab_needle,
check_entries=False)),
TAB_SEPARATOR)
else:
print_tab_menu(
needle,
take(TAB_ENTRIES_COUNT, find_matches(entries, needle)),
take(TAB_ENTRIES_COUNT, find_matches(
entries,
needle,
check_entries=False)),
TAB_SEPARATOR)