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mysql indexed keys cannot be larger thatn 256 chars, but 250 is enough for this purpose
mysql indexed keys cannot be larger thatn 256 chars, but 250 is enough for this purpose

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helpers.py
241 lines | 7.2 KiB | text/x-python | PythonLexer
"""
Utitlites aimed to help achieve mostly basic tasks.
"""
from __future__ import division
import re
import time
import datetime
import os.path
from subprocess import Popen, PIPE
from rhodecode.lib.vcs.exceptions import VCSError
from rhodecode.lib.vcs.exceptions import RepositoryError
from rhodecode.lib.vcs.utils.paths import abspath
ALIASES = ['hg', 'git']
def get_scm(path, search_up=False, explicit_alias=None):
"""
Returns one of alias from ``ALIASES`` (in order of precedence same as
shortcuts given in ``ALIASES``) and top working dir path for the given
argument. If no scm-specific directory is found or more than one scm is
found at that directory, ``VCSError`` is raised.
:param search_up: if set to ``True``, this function would try to
move up to parent directory every time no scm is recognized for the
currently checked path. Default: ``False``.
:param explicit_alias: can be one of available backend aliases, when given
it will return given explicit alias in repositories under more than one
version control, if explicit_alias is different than found it will raise
VCSError
"""
if not os.path.isdir(path):
raise VCSError("Given path %s is not a directory" % path)
def get_scms(path):
return [(scm, path) for scm in get_scms_for_path(path)]
found_scms = get_scms(path)
while not found_scms and search_up:
newpath = abspath(path, '..')
if newpath == path:
break
path = newpath
found_scms = get_scms(path)
if len(found_scms) > 1:
for scm in found_scms:
if scm[0] == explicit_alias:
return scm
raise VCSError('More than one [%s] scm found at given path %s'
% (','.join((x[0] for x in found_scms)), path))
if len(found_scms) is 0:
raise VCSError('No scm found at given path %s' % path)
return found_scms[0]
def get_scms_for_path(path):
"""
Returns all scm's found at the given path. If no scm is recognized
- empty list is returned.
:param path: path to directory which should be checked. May be callable.
:raises VCSError: if given ``path`` is not a directory
"""
from rhodecode.lib.vcs.backends import get_backend
if hasattr(path, '__call__'):
path = path()
if not os.path.isdir(path):
raise VCSError("Given path %r is not a directory" % path)
result = []
for key in ALIASES:
dirname = os.path.join(path, '.' + key)
if os.path.isdir(dirname):
result.append(key)
continue
dirname = os.path.join(path, 'rm__.' + key)
if os.path.isdir(dirname):
return result
# We still need to check if it's not bare repository as
# bare repos don't have working directories
try:
get_backend(key)(path)
result.append(key)
continue
except RepositoryError:
# Wrong backend
pass
except VCSError:
# No backend at all
pass
return result
def run_command(cmd, *args):
"""
Runs command on the system with given ``args``.
"""
command = ' '.join((cmd, args))
p = Popen(command, shell=True, stdout=PIPE, stderr=PIPE)
stdout, stderr = p.communicate()
return p.retcode, stdout, stderr
def get_highlighted_code(name, code, type='terminal'):
"""
If pygments are available on the system
then returned output is colored. Otherwise
unchanged content is returned.
"""
import logging
try:
import pygments
pygments
except ImportError:
return code
from pygments import highlight
from pygments.lexers import guess_lexer_for_filename, ClassNotFound
from pygments.formatters import TerminalFormatter
try:
lexer = guess_lexer_for_filename(name, code)
formatter = TerminalFormatter()
content = highlight(code, lexer, formatter)
except ClassNotFound:
logging.debug("Couldn't guess Lexer, will not use pygments.")
content = code
return content
def parse_changesets(text):
"""
Returns dictionary with *start*, *main* and *end* ids.
Examples::
>>> parse_changesets('aaabbb')
{'start': None, 'main': 'aaabbb', 'end': None}
>>> parse_changesets('aaabbb..cccddd')
{'start': 'aaabbb', 'main': None, 'end': 'cccddd'}
"""
text = text.strip()
CID_RE = r'[a-zA-Z0-9]+'
if not '..' in text:
m = re.match(r'^(?P<cid>%s)$' % CID_RE, text)
if m:
return {
'start': None,
'main': text,
'end': None,
}
else:
RE = r'^(?P<start>%s)?\.{2,3}(?P<end>%s)?$' % (CID_RE, CID_RE)
m = re.match(RE, text)
if m:
result = m.groupdict()
result['main'] = None
return result
raise ValueError("IDs not recognized")
def parse_datetime(text):
"""
Parses given text and returns ``datetime.datetime`` instance or raises
``ValueError``.
:param text: string of desired date/datetime or something more verbose,
like *yesterday*, *2weeks 3days*, etc.
"""
text = text.strip().lower()
INPUT_FORMATS = (
'%Y-%m-%d %H:%M:%S',
'%Y-%m-%d %H:%M',
'%Y-%m-%d',
'%m/%d/%Y %H:%M:%S',
'%m/%d/%Y %H:%M',
'%m/%d/%Y',
'%m/%d/%y %H:%M:%S',
'%m/%d/%y %H:%M',
'%m/%d/%y',
)
for format in INPUT_FORMATS:
try:
return datetime.datetime(*time.strptime(text, format)[:6])
except ValueError:
pass
# Try descriptive texts
if text == 'tomorrow':
future = datetime.datetime.now() + datetime.timedelta(days=1)
args = future.timetuple()[:3] + (23, 59, 59)
return datetime.datetime(*args)
elif text == 'today':
return datetime.datetime(*datetime.datetime.today().timetuple()[:3])
elif text == 'now':
return datetime.datetime.now()
elif text == 'yesterday':
past = datetime.datetime.now() - datetime.timedelta(days=1)
return datetime.datetime(*past.timetuple()[:3])
else:
days = 0
matched = re.match(
r'^((?P<weeks>\d+) ?w(eeks?)?)? ?((?P<days>\d+) ?d(ays?)?)?$', text)
if matched:
groupdict = matched.groupdict()
if groupdict['days']:
days += int(matched.groupdict()['days'])
if groupdict['weeks']:
days += int(matched.groupdict()['weeks']) * 7
past = datetime.datetime.now() - datetime.timedelta(days=days)
return datetime.datetime(*past.timetuple()[:3])
raise ValueError('Wrong date: "%s"' % text)
def get_dict_for_attrs(obj, attrs):
"""
Returns dictionary for each attribute from given ``obj``.
"""
data = {}
for attr in attrs:
data[attr] = getattr(obj, attr)
return data
def get_total_seconds(timedelta):
"""
Backported for Python 2.5.
See http://docs.python.org/library/datetime.html.
"""
return ((timedelta.microseconds + (
timedelta.seconds +
timedelta.days * 24 * 60 * 60
) * 10**6) / 10**6)