Mercurial > kallithea

annotate rhodecode/lib/vcs/utils/helpers.py @ 3987:b58ed6d608cc

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author Mads Kiilerich <madski@unity3d.com>
date Wed, 12 Jun 2013 01:36:35 +0200
parents d7488551578e
children 7e5f8c12a3fc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2007
324ac367a4da Added VCS into rhodecode core for faster and easier deployments of new versions
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1 """
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2 Utitlites aimed to help achieve mostly basic tasks.
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3 """
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4 from __future__ import division
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5
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6 import re
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7 import os
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8 import time
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9 import datetime
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10 from subprocess import Popen, PIPE
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11
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12 from rhodecode.lib.vcs.exceptions import VCSError
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13 from rhodecode.lib.vcs.exceptions import RepositoryError
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14 from rhodecode.lib.vcs.utils.paths import abspath
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15
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16 ALIASES = ['hg', 'git']
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17
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18
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19 def get_scm(path, search_up=False, explicit_alias=None):
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20 """
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21 Returns one of alias from ``ALIASES`` (in order of precedence same as
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22 shortcuts given in ``ALIASES``) and top working dir path for the given
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23 argument. If no scm-specific directory is found or more than one scm is
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24 found at that directory, ``VCSError`` is raised.
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25
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26 :param search_up: if set to ``True``, this function would try to
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27 move up to parent directory every time no scm is recognized for the
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28 currently checked path. Default: ``False``.
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29 :param explicit_alias: can be one of available backend aliases, when given
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30 it will return given explicit alias in repositories under more than one
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31 version control, if explicit_alias is different than found it will raise
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32 VCSError
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33 """
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34 if not os.path.isdir(path):
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35 raise VCSError("Given path %s is not a directory" % path)
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36
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37 def get_scms(path):
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38 return [(scm, path) for scm in get_scms_for_path(path)]
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39
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40 found_scms = get_scms(path)
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41 while not found_scms and search_up:
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42 newpath = abspath(path, '..')
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43 if newpath == path:
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44 break
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45 path = newpath
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46 found_scms = get_scms(path)
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47
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48 if len(found_scms) > 1:
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49 for scm in found_scms:
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50 if scm[0] == explicit_alias:
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51 return scm
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52 raise VCSError('More than one [%s] scm found at given path %s'
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53 % (', '.join((x[0] for x in found_scms)), path))
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54
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55 if len(found_scms) is 0:
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56 raise VCSError('No scm found at given path %s' % path)
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57
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58 return found_scms[0]
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59
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60
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61 def get_scms_for_path(path):
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62 """
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63 Returns all scm's found at the given path. If no scm is recognized
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64 - empty list is returned.
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65
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66 :param path: path to directory which should be checked. May be callable.
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67
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68 :raises VCSError: if given ``path`` is not a directory
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69 """
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70 from rhodecode.lib.vcs.backends import get_backend
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71 if hasattr(path, '__call__'):
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72 path = path()
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73 if not os.path.isdir(path):
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74 raise VCSError("Given path %r is not a directory" % path)
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75
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76 result = []
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77 for key in ALIASES:
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78 dirname = os.path.join(path, '.' + key)
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79 if os.path.isdir(dirname):
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80 result.append(key)
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81 continue
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82 dirname = os.path.join(path, 'rm__.' + key)
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83 if os.path.isdir(dirname):
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84 return result
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85 # We still need to check if it's not bare repository as
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86 # bare repos don't have working directories
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87 try:
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88 get_backend(key)(path)
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89 result.append(key)
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90 continue
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91 except RepositoryError:
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92 # Wrong backend
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93 pass
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94 except VCSError:
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95 # No backend at all
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96 pass
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97 return result
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98
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99
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100 def run_command(cmd, *args):
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101 """
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102 Runs command on the system with given ``args``.
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103 """
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104 command = ' '.join((cmd, args))
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105 p = Popen(command, shell=True, stdout=PIPE, stderr=PIPE)
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106 stdout, stderr = p.communicate()
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107 return p.retcode, stdout, stderr
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108
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109
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110 def get_highlighted_code(name, code, type='terminal'):
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111 """
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112 If pygments are available on the system
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113 then returned output is colored. Otherwise
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114 unchanged content is returned.
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115 """
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116 import logging
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117 try:
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118 import pygments
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119 pygments
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120 except ImportError:
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121 return code
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122 from pygments import highlight
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123 from pygments.lexers import guess_lexer_for_filename, ClassNotFound
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124 from pygments.formatters import TerminalFormatter
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125
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126 try:
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127 lexer = guess_lexer_for_filename(name, code)
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128 formatter = TerminalFormatter()
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129 content = highlight(code, lexer, formatter)
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130 except ClassNotFound:
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131 logging.debug("Couldn't guess Lexer, will not use pygments.")
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132 content = code
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133 return content
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134
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135
2007
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136 def parse_changesets(text):
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137 """
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138 Returns dictionary with *start*, *main* and *end* ids.
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139
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140 Examples::
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141
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142 >>> parse_changesets('aaabbb')
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143 {'start': None, 'main': 'aaabbb', 'end': None}
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144 >>> parse_changesets('aaabbb..cccddd')
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145 {'start': 'aaabbb', 'main': None, 'end': 'cccddd'}
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146
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147 """
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148 text = text.strip()
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149 CID_RE = r'[a-zA-Z0-9]+'
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150 if not '..' in text:
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151 m = re.match(r'^(?P<cid>%s)$' % CID_RE, text)
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152 if m:
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153 return {
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154 'start': None,
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155 'main': text,
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156 'end': None,
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157 }
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158 else:
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159 RE = r'^(?P<start>%s)?\.{2,3}(?P<end>%s)?$' % (CID_RE, CID_RE)
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160 m = re.match(RE, text)
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161 if m:
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162 result = m.groupdict()
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163 result['main'] = None
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164 return result
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165 raise ValueError("IDs not recognized")
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166
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167
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168 def parse_datetime(text):
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169 """
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170 Parses given text and returns ``datetime.datetime`` instance or raises
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171 ``ValueError``.
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172
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173 :param text: string of desired date/datetime or something more verbose,
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174 like *yesterday*, *2weeks 3days*, etc.
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175 """
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176
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177 text = text.strip().lower()
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178
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179 INPUT_FORMATS = (
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180 '%Y-%m-%d %H:%M:%S',
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181 '%Y-%m-%d %H:%M',
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182 '%Y-%m-%d',
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183 '%m/%d/%Y %H:%M:%S',
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184 '%m/%d/%Y %H:%M',
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185 '%m/%d/%Y',
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186 '%m/%d/%y %H:%M:%S',
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187 '%m/%d/%y %H:%M',
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188 '%m/%d/%y',
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189 )
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190 for format in INPUT_FORMATS:
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191 try:
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192 return datetime.datetime(*time.strptime(text, format)[:6])
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193 except ValueError:
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194 pass
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195
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196 # Try descriptive texts
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197 if text == 'tomorrow':
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198 future = datetime.datetime.now() + datetime.timedelta(days=1)
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199 args = future.timetuple()[:3] + (23, 59, 59)
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200 return datetime.datetime(*args)
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201 elif text == 'today':
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202 return datetime.datetime(*datetime.datetime.today().timetuple()[:3])
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203 elif text == 'now':
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204 return datetime.datetime.now()
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205 elif text == 'yesterday':
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206 past = datetime.datetime.now() - datetime.timedelta(days=1)
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207 return datetime.datetime(*past.timetuple()[:3])
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208 else:
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209 days = 0
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210 matched = re.match(
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211 r'^((?P<weeks>\d+) ?w(eeks?)?)? ?((?P<days>\d+) ?d(ays?)?)?$', text)
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212 if matched:
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213 groupdict = matched.groupdict()
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214 if groupdict['days']:
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215 days += int(matched.groupdict()['days'])
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216 if groupdict['weeks']:
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217 days += int(matched.groupdict()['weeks']) * 7
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218 past = datetime.datetime.now() - datetime.timedelta(days=days)
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219 return datetime.datetime(*past.timetuple()[:3])
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220
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221 raise ValueError('Wrong date: "%s"' % text)
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222
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223
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224 def get_dict_for_attrs(obj, attrs):
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225 """
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226 Returns dictionary for each attribute from given ``obj``.
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227 """
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228 data = {}
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229 for attr in attrs:
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230 data[attr] = getattr(obj, attr)
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231 return data
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232
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233
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234 def get_total_seconds(timedelta):
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235 """
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236 Backported for Python 2.5.
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237
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238 See http://docs.python.org/library/datetime.html.
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239 """
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240 return ((timedelta.microseconds + (
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241 timedelta.seconds +
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242 timedelta.days * 24 * 60 * 60
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243 ) * 10**6) / 10**6)