annotate documentViewer.py @ 45:0391fe75aef3

fixed handling of documents with missing access tag
author casties
date Wed, 26 Jul 2006 14:23:55 +0200
parents f3bc59cf64d9
children 31059e3d9338
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1 from OFS.Folder import Folder
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2 from Products.PageTemplates.ZopePageTemplate import ZopePageTemplate
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3 from Products.PageTemplates.PageTemplateFile import PageTemplateFile
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4 from AccessControl import ClassSecurityInfo
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5 from AccessControl import getSecurityManager
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6 from Globals import package_home
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7
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8 from Ft.Xml.Domlette import NonvalidatingReader
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9 from Ft.Xml.Domlette import PrettyPrint, Print
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10 from Ft.Xml import EMPTY_NAMESPACE, Parse
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11
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12 import Ft.Xml.XPath
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13
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14 import os.path
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15 import sys
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16 import cgi
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17 import urllib
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18 import zLOG
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19
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20 def getInt(number, default=0):
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21 """returns always an int (0 in case of problems)"""
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22 try:
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23 return int(number)
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24 except:
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25 return default
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26
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27 def getTextFromNode(nodename):
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28 if nodename is None:
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29 return ""
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30 nodelist=nodename.childNodes
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31 rc = ""
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32 for node in nodelist:
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33 if node.nodeType == node.TEXT_NODE:
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34 rc = rc + node.data
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35 return rc
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36
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37
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38 def getParentDir(path):
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39 """returns pathname shortened by one"""
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40 return '/'.join(path.split('/')[0:-1])
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41
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42
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43 import socket
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44
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45 def urlopen(url,timeout=2):
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46 """urlopen mit timeout"""
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47 socket.setdefaulttimeout(timeout)
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48 ret=urllib.urlopen(url)
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49 socket.setdefaulttimeout(5)
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50 return ret
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51
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52
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53 ##
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54 ## documentViewer class
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55 ##
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56 class documentViewer(Folder):
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57 """document viewer"""
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58
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59 meta_type="Document viewer"
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60
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61 security=ClassSecurityInfo()
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62 manage_options=Folder.manage_options+(
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63 {'label':'main config','action':'changeDocumentViewerForm'},
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64 )
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65
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66 # templates and forms
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67 viewer_main = PageTemplateFile('zpt/viewer_main', globals())
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68 thumbs_main = PageTemplateFile('zpt/thumbs_main', globals())
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69 image_main = PageTemplateFile('zpt/image_main', globals())
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70 head_main = PageTemplateFile('zpt/head_main', globals())
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71 docuviewer_css = PageTemplateFile('css/docuviewer.css', globals())
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72
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73 security.declareProtected('View management screens','changeDocumentViewerForm')
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74 changeDocumentViewerForm = PageTemplateFile('zpt/changeDocumentViewer', globals())
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75
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76
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77 def __init__(self,id,imageViewerUrl,title="",digilibBaseUrl=None,thumbcols=2,thumbrows=10,authgroups="mpiwg"):
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78 """init document viewer"""
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79 self.id=id
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80 self.title=title
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81 self.imageViewerUrl=imageViewerUrl
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82 if not digilibBaseUrl:
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83 self.digilibBaseUrl = self.findDigilibUrl()
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84 else:
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85 self.digilibBaseUrl = digilibBaseUrl
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86 self.thumbcols = thumbcols
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87 self.thumbrows = thumbrows
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88 # authgroups is list of authorized groups (delimited by ,)
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89 self.authgroups = [s.strip().lower() for s in authgroups.split(',')]
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90 # add template folder so we can always use template.something
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91 self.manage_addFolder('template')
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92
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93
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94 security.declareProtected('View','index_html')
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95 def index_html(self,mode,url,start=None,pn=1):
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96 '''
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97 view it
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98 @param mode: defines which type of document is behind url
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99 @param url: url which contains display information
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100 '''
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101
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102 zLOG.LOG("documentViewer (index)", zLOG.INFO, "mode: %s url:%s start:%s pn:%s"%(mode,url,start,pn))
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103
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104 if not hasattr(self, 'template'):
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105 # create template folder if it doesn't exist
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106 self.manage_addFolder('template')
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107
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108 if not self.digilibBaseUrl:
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109 self.digilibBaseUrl = self.findDigilibUrl() or "http://nausikaa.mpiwg-berlin.mpg.de/digitallibrary"
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110
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111 docinfo = self.getDocinfo(mode=mode,url=url)
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112 pageinfo = self.getPageinfo(start=start,current=pn,docinfo=docinfo)
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113 pt = getattr(self.template, 'viewer_main')
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114 return pt(docinfo=docinfo,pageinfo=pageinfo)
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115
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116
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117 def getLink(self,param=None,val=None):
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118 """link to documentviewer with parameter param set to val"""
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119 params=self.REQUEST.form.copy()
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120 if param is not None:
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121 if val is None:
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122 if params.has_key(param):
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123 del params[param]
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124 else:
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125 params[param] = str(val)
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126
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127 # quote values and assemble into query string
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128 ps = "&".join(["%s=%s"%(k,urllib.quote(v)) for (k, v) in params.items()])
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129 url=self.REQUEST['URL1']+"?"+ps
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130 return url
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131
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132
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133 def getStyle(self, idx, selected, style=""):
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134 """returns a string with the given style and append 'sel' if path == selected."""
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135 #zLOG.LOG("documentViewer (getstyle)", zLOG.INFO, "idx: %s selected: %s style: %s"%(idx,selected,style))
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136 if idx == selected:
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137 return style + 'sel'
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138 else:
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139 return style
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140
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141
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142 def isAccessible(self, docinfo):
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143 """returns if access to the resource is granted"""
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144 access = docinfo.get('accessType', None)
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145 zLOG.LOG("documentViewer (accessOK)", zLOG.INFO, "access type %s"%access)
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146 if access is not None and access == 'free':
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147 zLOG.LOG("documentViewer (accessOK)", zLOG.INFO, "access is free")
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148 return True
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149 elif access is None or access in self.authgroups:
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150 # only local access -- only logged in users
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151 user = getSecurityManager().getUser()
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152 if user is not None:
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153 #print "user: ", user
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154 return (user.getUserName() != "Anonymous User")
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155 else:
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156 return False
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157
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158 zLOG.LOG("documentViewer (accessOK)", zLOG.INFO, "unknown access type %s"%access)
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159 return False
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160
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161
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162 def getDirinfoFromDigilib(self,path,docinfo=None):
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163 """gibt param von dlInfo aus"""
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164 num_retries = 3
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165 if docinfo is None:
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166 docinfo = {}
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167
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168 infoUrl=self.digilibBaseUrl+"/dirInfo-xml.jsp?mo=dir&fn="+path
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169
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170 zLOG.LOG("documentViewer (getparamfromdigilib)", zLOG.INFO, "dirInfo from %s"%(infoUrl))
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171
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172 for cnt in range(num_retries):
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173 try:
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174 # dom = NonvalidatingReader.parseUri(imageUrl)
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175 txt=urllib.urlopen(infoUrl).read()
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176 dom = Parse(txt)
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177 break
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178 except:
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179 zLOG.LOG("documentViewer (getdirinfofromdigilib)", zLOG.ERROR, "error reading %s (try %d)"%(infoUrl,cnt))
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180 else:
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181 raise IOError("Unable to get dir-info from %s"%(infoUrl))
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182
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183 sizes=dom.xpath("//dir/size")
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184 zLOG.LOG("documentViewer (getparamfromdigilib)", zLOG.INFO, "dirInfo:size"%sizes)
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185
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186 if sizes:
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187 docinfo['numPages'] = int(getTextFromNode(sizes[0]))
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188 else:
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189 docinfo['numPages'] = 0
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190
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191 return docinfo
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192
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193
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194 def getIndexMeta(self, url):
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195 """returns dom of index.meta document at url"""
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196 num_retries = 3
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197 dom = None
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198 metaUrl = None
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199 if url.startswith("http://"):
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200 # real URL
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201 metaUrl = url
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202 else:
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203 # online path
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204 server=self.digilibBaseUrl+"/servlet/Texter?fn="
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205 metaUrl=server+url.replace("/mpiwg/online","")
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206 if not metaUrl.endswith("index.meta"):
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207 metaUrl += "/index.meta"
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208
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209 for cnt in range(num_retries):
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210 try:
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211 # patch dirk encoding fehler treten dann nicht mehr auf
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212 # dom = NonvalidatingReader.parseUri(metaUrl)
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213 txt=urllib.urlopen(metaUrl).read()
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214 dom = Parse(txt)
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215 break
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216 except:
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217 zLOG.LOG("ERROR documentViewer (getIndexMata)", zLOG.INFO,"%s (%s)"%sys.exc_info()[0:2])
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218
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219 if dom is None:
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220 raise IOError("Unable to read index meta from %s"%(url))
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221
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222 return dom
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223
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224
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225 def getAuthinfoFromIndexMeta(self,path,docinfo=None,dom=None):
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226 """gets authorization info from the index.meta file at path or given by dom"""
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227 zLOG.LOG("documentViewer (getauthinfofromindexmeta)", zLOG.INFO,"path: %s"%(path))
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228
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229 access = None
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230
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231 if docinfo is None:
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232 docinfo = {}
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233
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234 if dom is None:
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235 dom = self.getIndexMeta(getParentDir(path))
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236
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237 acctype = dom.xpath("//access-conditions/access/@type")
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238 if acctype and (len(acctype)>0):
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239 access=acctype[0].value
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240 if access in ['group', 'institution']:
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241 access = getTextFromNode(dom.xpath("//access-conditions/access/name")[0]).lower()
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242
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243 docinfo['accessType'] = access
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244 return docinfo
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245
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246
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247 def getBibinfoFromIndexMeta(self,path,docinfo=None,dom=None):
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248 """gets bibliographical info from the index.meta file at path or given by dom"""
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249 zLOG.LOG("documentViewer (getbibinfofromindexmeta)", zLOG.INFO,"path: %s"%(path))
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250
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251 if docinfo is None:
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252 docinfo = {}
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253
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254 if dom is None:
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255 dom = self.getIndexMeta(getParentDir(path))
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256
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257 metaData=self.metadata.main.meta.bib
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258 bibtype=dom.xpath("//bib/@type")
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259 if bibtype and (len(bibtype)>0):
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260 bibtype=bibtype[0].value
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261 else:
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262 bibtype="generic"
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263 bibtype=bibtype.replace("-"," ") # wrong typesiin index meta "-" instead of " " (not wrong! ROC)
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264 bibmap=metaData.generateMappingForType(bibtype)
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265 #print "bibmap: ", bibmap, " for: ", bibtype
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266 # if there is no mapping bibmap is empty (mapping sometimes has empty fields)
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267 if len(bibmap) > 0 and len(bibmap['author'][0]) > 0:
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268 docinfo['author']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['author'][0])[0])
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269 docinfo['title']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['title'][0])[0])
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270 docinfo['year']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['year'][0])[0])
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271
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272 return docinfo
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273
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274
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275 def getDocinfoFromTextTool(self,url,dom=None,docinfo=None):
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276 """parse texttool tag in index meta"""
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277 zLOG.LOG("documentViewer (getdocinfofromtexttool)", zLOG.INFO,"url: %s"%(url))
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278 if docinfo is None:
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279 docinfo = {}
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280
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281 if dom is None:
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282 dom = self.getIndexMeta(url)
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283
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284 archivePath = None
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285 archiveName = None
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286
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287 archiveNames=dom.xpath("//resource/name")
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288 if archiveNames and (len(archiveNames)>0):
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289 archiveName=getTextFromNode(archiveNames[0])
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290 else:
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291 zLOG.LOG("documentViewer (getdocinfofromtexttool)", zLOG.WARNING,"resource/name missing in: %s"%(url))
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292
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293 archivePaths=dom.xpath("//resource/archive-path")
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294 if archivePaths and (len(archivePaths)>0):
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295 archivePath=getTextFromNode(archivePaths[0])
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296 # clean up archive path
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297 if archivePath[0] != '/':
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298 archivePath = '/' + archivePath
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299 if archiveName and (not archivePath.endswith(archiveName)):
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300 archivePath += "/" + archiveName
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301 else:
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302 # try to get archive-path from url
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303 zLOG.LOG("documentViewer (getdocinfofromtexttool)", zLOG.WARNING,"resource/archive-path missing in: %s"%(url))
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304 if (not url.startswith('http')):
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305 archivePath = url.replace('index.meta', '')
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306
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307 if archivePath is None:
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308 # we balk without archive-path
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309 raise IOError("Missing archive-path (for text-tool) in %s"%(url))
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310
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311 imageDirs=dom.xpath("//texttool/image")
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312 if imageDirs and (len(imageDirs)>0):
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313 imageDir=getTextFromNode(imageDirs[0])
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314 else:
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315 # we balk with no image tag
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316 raise IOError("No text-tool info in %s"%(url))
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317
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318 if imageDir and archivePath:
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319 #print "image: ", imageDir, " archivepath: ", archivePath
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320 imageDir=os.path.join(archivePath,imageDir)
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321 imageDir=imageDir.replace("/mpiwg/online",'')
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322 docinfo=self.getDirinfoFromDigilib(imageDir,docinfo=docinfo)
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323 docinfo['imagePath'] = imageDir
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324 docinfo['imageURL'] = self.digilibBaseUrl+"/servlet/Scaler?fn="+imageDir
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325
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326 viewerUrls=dom.xpath("//texttool/digiliburlprefix")
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327 if viewerUrls and (len(viewerUrls)>0):
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328 viewerUrl=getTextFromNode(viewerUrls[0])
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329 docinfo['viewerURL'] = viewerUrl
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330
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331 textUrls=dom.xpath("//texttool/text")
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332 if textUrls and (len(textUrls)>0):
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333 textUrl=getTextFromNode(textUrls[0])
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334 docinfo['textURL'] = textUrl
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335
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336 docinfo = self.getBibinfoFromIndexMeta(url,docinfo=docinfo,dom=dom)
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337 docinfo = self.getAuthinfoFromIndexMeta(url,docinfo=docinfo,dom=dom)
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338 return docinfo
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339
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340
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341 def getDocinfoFromImagePath(self,path,docinfo=None):
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342 """path ist the path to the images it assumes that the index.meta file is one level higher."""
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343 zLOG.LOG("documentViewer (getdocinfofromimagepath)", zLOG.INFO,"path: %s"%(path))
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344 if docinfo is None:
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345 docinfo = {}
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346 path=path.replace("/mpiwg/online","")
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347 docinfo['imagePath'] = path
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348 docinfo=self.getDirinfoFromDigilib(path,docinfo=docinfo)
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349 imageUrl=self.digilibBaseUrl+"/servlet/Scaler?fn="+path
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350 docinfo['imageURL'] = imageUrl
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351
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352 docinfo = self.getBibinfoFromIndexMeta(path,docinfo=docinfo)
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353 docinfo = self.getAuthinfoFromIndexMeta(path,docinfo=docinfo)
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354 return docinfo
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355
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356
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357 def getDocinfo(self, mode, url):
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358 """returns docinfo depending on mode"""
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359 zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"mode: %s, url: %s"%(mode,url))
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360 # look for cached docinfo in session
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361 if self.REQUEST.SESSION.has_key('docinfo'):
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362 docinfo = self.REQUEST.SESSION['docinfo']
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363 # check if its still current
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364 if docinfo is not None and docinfo.get('mode') == mode and docinfo.get('url') == url:
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365 zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"docinfo in session: %s"%docinfo)
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366 return docinfo
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367 # new docinfo
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368 docinfo = {'mode': mode, 'url': url}
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369 if mode=="texttool": #index.meta with texttool information
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370 docinfo = self.getDocinfoFromTextTool(url, docinfo=docinfo)
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371 elif mode=="imagepath":
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372 docinfo = self.getDocinfoFromImagePath(url, docinfo=docinfo)
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373 else:
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374 zLOG.LOG("documentViewer (getdocinfo)", zLOG.ERROR,"unknown mode!")
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375 raise ValueError("Unknown mode %s"%(mode))
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376
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377 zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"docinfo: %s"%docinfo)
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378 self.REQUEST.SESSION['docinfo'] = docinfo
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379 return docinfo
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380
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381
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382 def getPageinfo(self, current, start=None, rows=None, cols=None, docinfo=None):
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383 """returns pageinfo with the given parameters"""
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384 pageinfo = {}
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385 current = getInt(current)
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386 pageinfo['current'] = current
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387 rows = int(rows or self.thumbrows)
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388 pageinfo['rows'] = rows
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389 cols = int(cols or self.thumbcols)
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390 pageinfo['cols'] = cols
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391 grpsize = cols * rows
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392 pageinfo['groupsize'] = grpsize
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393 start = getInt(start, default=(int(current / grpsize) * grpsize +1))
22
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394 pageinfo['start'] = start
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395 pageinfo['end'] = start + grpsize
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396 if docinfo is not None:
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397 np = int(docinfo['numPages'])
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398 pageinfo['end'] = min(pageinfo['end'], np)
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399 pageinfo['numgroups'] = int(np / grpsize)
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400 if np % grpsize > 0:
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401 pageinfo['numgroups'] += 1
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402
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403 return pageinfo
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404
0
dwinter
parents:
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405 def text(self,mode,url,pn):
dwinter
parents:
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406 """give text"""
dwinter
parents:
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407 if mode=="texttool": #index.meta with texttool information
dwinter
parents:
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408 (viewerUrl,imagepath,textpath)=parseUrlTextTool(url)
dwinter
parents:
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409
35
2d9261aea8f3 version 0.2.4
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410 #print textpath
0
dwinter
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411 try:
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412 dom = NonvalidatingReader.parseUri(textpath)
dwinter
parents:
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413 except:
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414 return None
dwinter
parents:
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415
dwinter
parents:
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416 list=[]
dwinter
parents:
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417 nodes=dom.xpath("//pb")
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parents:
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418
dwinter
parents:
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419 node=nodes[int(pn)-1]
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parents:
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420
dwinter
parents:
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421 p=node
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parents:
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422
dwinter
parents:
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423 while p.tagName!="p":
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424 p=p.parentNode
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parents:
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425
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parents:
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426
dwinter
parents:
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427 endNode=nodes[int(pn)]
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parents:
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428
dwinter
parents:
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429
dwinter
parents:
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430 e=endNode
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parents:
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431
dwinter
parents:
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432 while e.tagName!="p":
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433 e=e.parentNode
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parents:
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434
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parents:
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435
dwinter
parents:
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436 next=node.parentNode
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parents:
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437
dwinter
parents:
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438 #sammle s
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parents:
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439 while next and (next!=endNode.parentNode):
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440 list.append(next)
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parents:
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441 next=next.nextSibling
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parents:
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442 list.append(endNode.parentNode)
dwinter
parents:
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443
dwinter
parents:
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444 if p==e:# beide im selben paragraphen
20
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445 pass
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446 # else:
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parents: 0
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447 # next=p
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parents: 0
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448 # while next!=e:
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449 # print next,e
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450 # list.append(next)
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451 # next=next.nextSibling
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parents: 0
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452 #
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453 # for x in list:
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454 # PrettyPrint(x)
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parents: 0
diff changeset
455 #
9884703dae70 new modi
dwinter
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456 # return list
22
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457 #
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458
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459 def findDigilibUrl(self):
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460 """try to get the digilib URL from zogilib"""
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461 url = self.imageViewerUrl[:-1] + "/getScalerUrl"
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462 try:
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463 scaler = urlopen(url).read()
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464 return scaler.replace("/servlet/Scaler?", "")
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465 except:
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466 return None
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467
32
b25c89d693cf version 0.2.3 - first version with access control!
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468 def changeDocumentViewer(self,imageViewerUrl,title="",digilibBaseUrl=None,thumbrows=2,thumbcols=10,authgroups='mpiwg',RESPONSE=None):
22
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469 """init document viewer"""
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470 self.title=title
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471 self.imageViewerUrl=imageViewerUrl
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472 self.digilibBaseUrl = digilibBaseUrl
25
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473 self.thumbrows = thumbrows
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474 self.thumbcols = thumbcols
32
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475 self.authgroups = [s.strip().lower() for s in authgroups.split(',')]
22
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476 if RESPONSE is not None:
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477 RESPONSE.redirect('manage_main')
0
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parents:
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478
dwinter
parents:
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479
dwinter
parents:
diff changeset
480
dwinter
parents:
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481
dwinter
parents:
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482 # security.declareProtected('View management screens','renameImageForm')
dwinter
parents:
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483
dwinter
parents:
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484 def manage_AddDocumentViewerForm(self):
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parents:
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485 """add the viewer form"""
22
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486 pt=PageTemplateFile('zpt/addDocumentViewer', globals()).__of__(self)
0
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parents:
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487 return pt()
dwinter
parents:
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488
dwinter
parents:
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489 def manage_AddDocumentViewer(self,id,imageViewerUrl="",title="",RESPONSE=None):
dwinter
parents:
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490 """add the viewer"""
dwinter
parents:
diff changeset
491 newObj=documentViewer(id,imageViewerUrl,title)
dwinter
parents:
diff changeset
492 self._setObject(id,newObj)
dwinter
parents:
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493
dwinter
parents:
diff changeset
494 if RESPONSE is not None:
dwinter
parents:
diff changeset
495 RESPONSE.redirect('manage_main')
22
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diff changeset
496
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497
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498 ##
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diff changeset
499 ## DocumentViewerTemplate class
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500 ##
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501 class DocumentViewerTemplate(ZopePageTemplate):
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diff changeset
502 """Template for document viewer"""
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diff changeset
503 meta_type="DocumentViewer Template"
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504
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505
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diff changeset
506 def manage_addDocumentViewerTemplateForm(self):
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507 """Form for adding"""
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diff changeset
508 pt=PageTemplateFile('zpt/addDocumentViewerTemplate', globals()).__of__(self)
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diff changeset
509 return pt()
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510
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diff changeset
511 def manage_addDocumentViewerTemplate(self, id='viewer_main', title=None, text=None,
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512 REQUEST=None, submit=None):
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diff changeset
513 "Add a Page Template with optional file content."
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514
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515 self._setObject(id, DocumentViewerTemplate(id))
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516 ob = getattr(self, id)
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diff changeset
517 ob.pt_edit(open(os.path.join(package_home(globals()),'zpt/viewer_main.zpt')).read(),None)
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diff changeset
518 if title:
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diff changeset
519 ob.pt_setTitle(title)
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diff changeset
520 try:
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diff changeset
521 u = self.DestinationURL()
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diff changeset
522 except AttributeError:
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diff changeset
523 u = REQUEST['URL1']
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diff changeset
524
b139f9937e97 preliminary version 0.2
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diff changeset
525 u = "%s/%s" % (u, urllib.quote(id))
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diff changeset
526 REQUEST.RESPONSE.redirect(u+'/manage_main')
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diff changeset
527 return ''
b139f9937e97 preliminary version 0.2
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diff changeset
528
b139f9937e97 preliminary version 0.2
casties
parents: 20
diff changeset
529
41
0c8ee8fcfd76 some more logging
casties
parents: 40
diff changeset
530