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# -*- coding: utf-8 -*-
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"""
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rhodecode.lib.utils
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~~~~~~~~~~~~~~~~~~~
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Some simple helper functions
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:created_on: Jan 5, 2011
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:author: marcink
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:copyright: (C) 2011-2012 Marcin Kuzminski <marcin@python-works.com>
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:license: GPLv3, see COPYING for more details.
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"""
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import re
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from rhodecode.lib.vcs.utils.lazy import LazyProperty
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def __get_lem():
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"""
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Get language extension map based on what's inside pygments lexers
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"""
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from pygments import lexers
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from string import lower
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from collections import defaultdict
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d = defaultdict(lambda: [])
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def __clean(s):
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s = s.lstrip('*')
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s = s.lstrip('.')
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if s.find('[') != -1:
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exts = []
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start, stop = s.find('['), s.find(']')
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for suffix in s[start + 1:stop]:
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exts.append(s[:s.find('[')] + suffix)
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return map(lower, exts)
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else:
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return map(lower, [s])
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for lx, t in sorted(lexers.LEXERS.items()):
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m = map(__clean, t[-2])
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if m:
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m = reduce(lambda x, y: x + y, m)
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for ext in m:
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desc = lx.replace('Lexer', '')
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d[ext].append(desc)
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return dict(d)
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def str2bool(_str):
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"""
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returs True/False value from given string, it tries to translate the
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string into boolean
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:param _str: string value to translate into boolean
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:rtype: boolean
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:returns: boolean from given string
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"""
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if _str is None:
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return False
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if _str in (True, False):
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return _str
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_str = str(_str).strip().lower()
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return _str in ('t', 'true', 'y', 'yes', 'on', '1')
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def convert_line_endings(line, mode):
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"""
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Converts a given line "line end" accordingly to given mode
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Available modes are::
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0 - Unix
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1 - Mac
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2 - DOS
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:param line: given line to convert
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:param mode: mode to convert to
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:rtype: str
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:return: converted line according to mode
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"""
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from string import replace
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if mode == 0:
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line = replace(line, '\r\n', '\n')
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line = replace(line, '\r', '\n')
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elif mode == 1:
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line = replace(line, '\r\n', '\r')
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line = replace(line, '\n', '\r')
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elif mode == 2:
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line = re.sub("\r(?!\n)|(?<!\r)\n", "\r\n", line)
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return line
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def detect_mode(line, default):
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"""
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Detects line break for given line, if line break couldn't be found
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given default value is returned
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:param line: str line
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:param default: default
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:rtype: int
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:return: value of line end on of 0 - Unix, 1 - Mac, 2 - DOS
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"""
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if line.endswith('\r\n'):
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return 2
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elif line.endswith('\n'):
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return 0
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elif line.endswith('\r'):
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return 1
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else:
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return default
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def generate_api_key(username, salt=None):
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"""
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Generates unique API key for given username, if salt is not given
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it'll be generated from some random string
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:param username: username as string
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:param salt: salt to hash generate KEY
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:rtype: str
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:returns: sha1 hash from username+salt
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"""
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from tempfile import _RandomNameSequence
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import hashlib
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if salt is None:
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salt = _RandomNameSequence().next()
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return hashlib.sha1(username + salt).hexdigest()
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def safe_unicode(str_, from_encoding=None):
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"""
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safe unicode function. Does few trick to turn str_ into unicode
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In case of UnicodeDecode error we try to return it with encoding detected
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by chardet library if it fails fallback to unicode with errors replaced
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:param str_: string to decode
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:rtype: unicode
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:returns: unicode object
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"""
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if isinstance(str_, unicode):
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return str_
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if not from_encoding:
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import rhodecode
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DEFAULT_ENCODING = rhodecode.CONFIG.get('default_encoding','utf8')
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from_encoding = DEFAULT_ENCODING
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try:
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return unicode(str_)
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except UnicodeDecodeError:
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pass
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try:
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return unicode(str_, from_encoding)
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except UnicodeDecodeError:
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pass
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try:
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import chardet
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encoding = chardet.detect(str_)['encoding']
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if encoding is None:
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raise Exception()
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return str_.decode(encoding)
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except (ImportError, UnicodeDecodeError, Exception):
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return unicode(str_, from_encoding, 'replace')
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def safe_str(unicode_, to_encoding=None):
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"""
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safe str function. Does few trick to turn unicode_ into string
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In case of UnicodeEncodeError we try to return it with encoding detected
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by chardet library if it fails fallback to string with errors replaced
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:param unicode_: unicode to encode
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:rtype: str
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:returns: str object
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"""
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# if it's not basestr cast to str
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if not isinstance(unicode_, basestring):
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return str(unicode_)
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if isinstance(unicode_, str):
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return unicode_
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if not to_encoding:
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import rhodecode
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DEFAULT_ENCODING = rhodecode.CONFIG.get('default_encoding','utf8')
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to_encoding = DEFAULT_ENCODING
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try:
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return unicode_.encode(to_encoding)
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except UnicodeEncodeError:
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pass
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try:
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import chardet
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encoding = chardet.detect(unicode_)['encoding']
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print encoding
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if encoding is None:
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raise UnicodeEncodeError()
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return unicode_.encode(encoding)
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except (ImportError, UnicodeEncodeError):
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return unicode_.encode(to_encoding, 'replace')
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return safe_str
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def engine_from_config(configuration, prefix='sqlalchemy.', **kwargs):
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"""
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Custom engine_from_config functions that makes sure we use NullPool for
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file based sqlite databases. This prevents errors on sqlite. This only
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applies to sqlalchemy versions < 0.7.0
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"""
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import sqlalchemy
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from sqlalchemy import engine_from_config as efc
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import logging
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if int(sqlalchemy.__version__.split('.')[1]) < 7:
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# This solution should work for sqlalchemy < 0.7.0, and should use
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# proxy=TimerProxy() for execution time profiling
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from sqlalchemy.pool import NullPool
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url = configuration[prefix + 'url']
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if url.startswith('sqlite'):
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kwargs.update({'poolclass': NullPool})
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return efc(configuration, prefix, **kwargs)
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else:
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import time
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from sqlalchemy import event
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from sqlalchemy.engine import Engine
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log = logging.getLogger('sqlalchemy.engine')
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BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE = xrange(30, 38)
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engine = efc(configuration, prefix, **kwargs)
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def color_sql(sql):
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COLOR_SEQ = "\033[1;%dm"
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COLOR_SQL = YELLOW
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normal = '\x1b[0m'
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return ''.join([COLOR_SEQ % COLOR_SQL, sql, normal])
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if configuration['debug']:
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#attach events only for debug configuration
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def before_cursor_execute(conn, cursor, statement,
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parameters, context, executemany):
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context._query_start_time = time.time()
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log.info(color_sql(">>>>> STARTING QUERY >>>>>"))
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def after_cursor_execute(conn, cursor, statement,
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parameters, context, executemany):
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total = time.time() - context._query_start_time
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log.info(color_sql("<<<<< TOTAL TIME: %f <<<<<" % total))
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event.listen(engine, "before_cursor_execute",
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before_cursor_execute)
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event.listen(engine, "after_cursor_execute",
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after_cursor_execute)
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return engine
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def age(curdate):
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"""
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turns a datetime into an age string.
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:param curdate: datetime object
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:rtype: unicode
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:returns: unicode words describing age
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"""
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from datetime import datetime
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from webhelpers.date import time_ago_in_words
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_ = lambda s: s
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if not curdate:
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return ''
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agescales = [(_(u"year"), 3600 * 24 * 365),
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(_(u"month"), 3600 * 24 * 30),
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(_(u"day"), 3600 * 24),
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(_(u"hour"), 3600),
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(_(u"minute"), 60),
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(_(u"second"), 1), ]
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age = datetime.now() - curdate
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age_seconds = (age.days * agescales[2][1]) + age.seconds
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pos = 1
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for scale in agescales:
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if scale[1] <= age_seconds:
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if pos == 6:
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pos = 5
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return '%s %s' % (time_ago_in_words(curdate,
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agescales[pos][0]), _('ago'))
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pos += 1
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return _(u'just now')
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def uri_filter(uri):
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"""
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Removes user:password from given url string
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:param uri:
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:rtype: unicode
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:returns: filtered list of strings
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"""
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if not uri:
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return ''
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proto = ''
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for pat in ('https://', 'http://'):
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if uri.startswith(pat):
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uri = uri[len(pat):]
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proto = pat
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break
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# remove passwords and username
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uri = uri[uri.find('@') + 1:]
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# get the port
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cred_pos = uri.find(':')
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if cred_pos == -1:
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host, port = uri, None
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else:
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host, port = uri[:cred_pos], uri[cred_pos + 1:]
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return filter(None, [proto, host, port])
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def credentials_filter(uri):
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"""
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Returns a url with removed credentials
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:param uri:
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"""
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uri = uri_filter(uri)
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#check if we have port
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if len(uri) > 2 and uri[2]:
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uri[2] = ':' + uri[2]
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return ''.join(uri)
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def get_changeset_safe(repo, rev):
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"""
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Safe version of get_changeset if this changeset doesn't exists for a
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repo it returns a Dummy one instead
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:param repo:
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:param rev:
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"""
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from rhodecode.lib.vcs.backends.base import BaseRepository
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from rhodecode.lib.vcs.exceptions import RepositoryError
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if not isinstance(repo, BaseRepository):
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raise Exception('You must pass an Repository '
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'object as first argument got %s', type(repo))
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try:
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cs = repo.get_changeset(rev)
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except RepositoryError:
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from rhodecode.lib.utils import EmptyChangeset
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cs = EmptyChangeset(requested_revision=rev)
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return cs
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MENTIONS_REGEX = r'(?:^@|\s@)([a-zA-Z0-9]{1}[a-zA-Z0-9\-\_\.]+)(?:\s{1})'
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def extract_mentioned_users(s):
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"""
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Returns unique usernames from given string s that have @mention
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:param s: string to get mentions
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"""
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usrs = set()
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for username in re.findall(MENTIONS_REGEX, s):
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usrs.add(username)
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return sorted(list(usrs), key=lambda k: k.lower())
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