Mercurial > hg > MPIWGWeb

annotate SrvTxtUtils.py @ 261:2028488642cf new_pro_struct

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omit subprojects element if empty.
author casties
date Thu, 07 Aug 2014 18:02:14 +0200
parents 649f74b167e6
children
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1 """Utility methods for handling XML, reading HTTP, etc"""
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2
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3 from App.ImageFile import ImageFile
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4 from App.Common import rfc1123_date
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5
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6 import sys
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7 import os
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8 import stat
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9 import urllib
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10 import logging
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11 import time
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12 import re
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13 import datetime
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14 try:
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15 import httplib2
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16 httplib = 'httplib2'
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17 except:
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18 logging.warn("Unable to import httplib2! Falling back to urllib2!")
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19 import urllib2
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20 httplib = 'urllib2'
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21
49
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22 import xml.etree.ElementTree as ET
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23
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24 srvTxtUtilsVersion = "1.12.3"
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25
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26 map_months = {'en': [u"",
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27 u"January",
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28 u"February",
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29 u"March",
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30 u"April",
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31 u"May",
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32 u"June",
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33 u"July",
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34 u"August",
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35 u"September",
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36 u"October",
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37 u"November",
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38 u"December"],
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39 'de': [u"",
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40 u"Januar",
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41 u"Februar",
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42 u"M\u00e4rz",
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43 u"April",
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44 u"Mai",
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45 u"Juni",
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46 u"Juli",
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47 u"August",
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48 u"September",
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49 u"Oktober",
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50 u"November",
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51 u"Dezember"]}
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52
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53 map_weekdays_short = {'en': [
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54 u"Mo",
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55 u"Tu",
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56 u"We",
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57 u"Th",
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58 u"Fr",
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59 u"Sa",
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60 u"Su",
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61 ],
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62 'de': [
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63 u"Mo",
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64 u"Di",
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65 u"Mi",
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66 u"Do",
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67 u"Fr",
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68 u"Sa",
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69 u"So",
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70 ]}
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71
0
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72
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73 def getInt(number, default=0):
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74 """returns always an int (0 in case of problems)"""
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75 try:
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76 return int(number)
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77 except:
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78 return int(default)
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79
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80 def getAt(array, idx, default=None):
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81 """returns element idx from array or default (in case of problems)"""
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82 try:
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83 return array[idx]
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84 except:
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85 return default
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86
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87 def unicodify(s):
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88 """decode str (utf-8 or latin-1 representation) into unicode object"""
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89 if not s:
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90 return u""
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91 if isinstance(s, str):
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92 try:
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93 return s.decode('utf-8')
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94 except:
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95 return s.decode('latin-1')
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96 else:
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97 return s
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98
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99 def utf8ify(s):
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100 """encode unicode object or string into byte string in utf-8 representation.
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101 assumes string objects to be utf-8"""
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102 if not s:
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103 return ""
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104 if isinstance(s, str):
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105 return s
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106 else:
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107 return s.encode('utf-8')
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108
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109
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110 def getTextFromNode(node, recursive=False, length=0):
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111 """Return all text content of a (etree) node.
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112
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113 :param recursive: descend subnodes
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114
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115 :returns: text string
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116 """
0
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117 if node is None:
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118 return ''
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119
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120 # ElementTree:
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121 text = node.text or ''
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122 for e in node:
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123 if recursive:
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124 text += getText(e)
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125 else:
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126 text += e.text or ''
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127 if e.tail:
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128 text += e.tail
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129
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130 # 4Suite:
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131 #nodelist=node.childNodes
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132 #text = ""
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133 #for n in nodelist:
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134 # if n.nodeType == node.TEXT_NODE:
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135 # text = text + n.data
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136
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137 return text
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138
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139 getText = getTextFromNode
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140
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141 def getPlaintext(text, length=0, wordwrap=False, ignoretags=[]):
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142 """Return plain text content by filtering out XML tags.
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143
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144 :param text: string or etree node
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145 :param length: length of text to return (0=all)
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146 :param wordwrap: try not to break the last word (may return shorter string)
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147 :returns: text string
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148 """
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149 if text is None:
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150 return ''
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151
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152 try:
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153 if isinstance(text, basestring):
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154 xmltext = utf8ify("<div>%s</div>"%text)
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155 dom = ET.fromstring(xmltext)
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156 else:
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157 dom = text
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158
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159 plaintext = ''
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160 for elem in dom.iter():
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161 if elem.tag in ignoretags:
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162 # ignore tag
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163 continue
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164
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165 if elem.text:
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166 plaintext += elem.text
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167 if elem.tail:
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168 plaintext += elem.tail
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169
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170 if length > 0 and len(plaintext) > length:
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171 break
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172
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173 text = plaintext
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174
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175 except Exception, e:
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176 logging.warn("getPlaintext: error parsing text! Returning everything. %s"%e)
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177
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178 if length > 0 and len(text) > length:
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179 # try to not break words
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180 if wordwrap and text[length] not in [' ', '.', '?', '!']:
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181 # search the last blank
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182 length = text.rfind(' ', 0, length)
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183
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184 return text[:length] + '...'
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185
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186 return text
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187
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188
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189 def serialize(node):
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190 """returns a string containing an XML snippet of (etree) node"""
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191 s = ET.tostring(node, 'UTF-8')
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192 # snip off XML declaration
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193 if s.startswith('<?xml'):
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194 i = s.find('?>')
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195 return s[i+3:]
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196
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197 return s
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198
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199
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200 def getMonthName(mon, lang):
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201 """returns the name of the month mon in the language lang"""
231
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202 return map_months[lang.lower()][mon]
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203
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204
231
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205 def getWeekdayName(day, lang, short=True):
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206 """returns the name of the weekday day in the language lang"""
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207 return map_weekdays_short[lang.lower()][day]
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208
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209
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210 def getDateString(date=None, lang='en', short=False, withYear=True, monthNames=True, abbrev=False):
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211 """Return formatted date string."""
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212 if date is None:
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213 return None
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214
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215 ds = None
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216 if callable(date.day):
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217 # callable members
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218 day = date.day()
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219 month = date.month()
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220 year = date.year()
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221 else:
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222 # data members
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223 day = date.day
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224 month = date.month
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225 year = date.year
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226
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227 if lang.lower() == 'en':
231
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228 if short:
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229 ds = "%s/%s/%s"%(year,month,day)
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230 else:
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231 ds = "%s %s"%(getMonthName(month, lang), day)
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232 if withYear:
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233 ds += ", %s"%year
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234
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235 elif lang.lower() == 'de':
231
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236 if short:
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237 ds = "%s.%s.%s"%(day,month,year)
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238 else:
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239 ds = "%s. %s"%(day, getMonthName(month, lang))
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240 if withYear:
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241 ds += " %s"%year
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242
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243 elif lang.lower() == 'iso':
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244 ds = date.isoformat()
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245
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246 return ds
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247
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248
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249 def getDate(date):
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250 """return date object from date or datetime date."""
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251 if isinstance(date, datetime.datetime):
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252 # strip time
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253 return date.date()
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254
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255 return date
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256
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257
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258 def getDatetime(date):
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259 """return datetime object from date or datetime date."""
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260 if isinstance(date, datetime.date):
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261 # add time 0:00
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262 return datetime.datetime.combine(date, datetime.time())
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263
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264 return date
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265
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266
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267 def getHttpData(url, data=None, num_tries=3, timeout=10, username=None, password=None, cache=None, insecure=False, noExceptions=False):
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268 """returns result from url+data HTTP request"""
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269 # we do GET (by appending data to url)
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270 if isinstance(data, str) or isinstance(data, unicode):
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271 # if data is string then append
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272 url = "%s?%s"%(url,data)
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273 elif isinstance(data, dict) or isinstance(data, list) or isinstance(data, tuple):
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274 # urlencode
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275 url = "%s?%s"%(url,urllib.urlencode(data))
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276
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277 errmsg = None
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278 if httplib == 'httplib2':
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279 # use httplib2
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280 for cnt in range(num_tries):
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281 try:
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282 logging.debug("getHttp(lib2)Data(#%s %ss) url=%s"%(cnt+1,timeout,url))
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283 h = httplib2.Http(cache=cache, timeout=float(timeout), disable_ssl_certificate_validation=insecure)
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284 if username:
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285 h.add_credentials(username, password)
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286
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287 resp, data = h.request(url)
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288 return data
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289
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290 except httplib2.HttpLib2Error, e:
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291 logging.error("getHttp(lib2)Data: HTTP error(%s): %s"%(e.code,e))
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292 errmsg = str(e)
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293 # stop trying
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294 break
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295
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296 else:
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297 # use urllib2
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298 response = None
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299 for cnt in range(num_tries):
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300 try:
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301 logging.debug("getHttpData(#%s %ss) url=%s"%(cnt+1,timeout,url))
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302 if sys.version_info < (2, 6):
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303 # set timeout on socket -- ugly :-(
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304 import socket
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305 socket.setdefaulttimeout(float(timeout))
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306 response = urllib2.urlopen(url)
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307 else:
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308 # timeout as parameter
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309 response = urllib2.urlopen(url,timeout=float(timeout))
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310 # check result?
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311 data = response.read()
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312 response.close()
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313 return data
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314
216
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315 except urllib2.HTTPError, e:
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316 logging.error("getHttpData: HTTP error(%s): %s"%(e.code,e))
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317 errmsg = str(e)
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318 # stop trying
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319 break
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320 except urllib2.URLError, e:
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321 logging.error("getHttpData: URLLIB error(%s): %s"%(e.reason,e))
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322 errmsg = str(e)
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323 # stop trying
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324 #break
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325
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326 if noExceptions:
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327 return None
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328
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329 raise IOError("ERROR fetching HTTP data from %s: %s"%(url,errmsg))
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330 #return None
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331
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332
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333 def refreshingImageFileIndexHtml(self, REQUEST, RESPONSE):
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334 """index_html method for App.ImageFile that updates the file info for each request."""
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335 stat_info = os.stat(self.path)
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336 self.size = stat_info[stat.ST_SIZE]
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337 self.lmt = float(stat_info[stat.ST_MTIME]) or time.time()
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338 self.lmh = rfc1123_date(self.lmt)
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339 # call original method
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340 return ImageFile.index_html(self, REQUEST, RESPONSE)
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341
65
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342
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343 def shortenString(s, l, ellipsis='...'):
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344 """returns a string of length l (or l-1) by omitting characters in the middle of s, replacing with ellipsis."""
207
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345 if len(s) <= l:
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346 return s
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347
65
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348 l1 = int((l - len(ellipsis)) / 2)
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349 return "%s%s%s"%(s[:l1],ellipsis,s[-l1:])
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350
188
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351
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352 def sqlName(s, lc=True, more=''):
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353 """returns restricted ASCII-only version of string"""
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354 if s is None:
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355 return ""
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356
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357 if not isinstance(s, basestring):
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358 # make string object
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359 s = str(s)
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360
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361 # remove '
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362 s = s.replace("'","")
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363 # all else -> "_"
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364 s = re.sub('[^A-Za-z0-9_'+more+']','_',s)
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365 if lc:
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366 return s.lower()
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367
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368 return s
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369
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370