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 |
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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 | if access is None: |
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146 | # no information - no access |
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147 | #TODO: check |
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148 | return True |
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149 | elif access == 'free': |
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150 | return True |
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151 | elif access in self.authgroups: |
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152 | # only local access -- only logged in users |
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153 | user = getSecurityManager().getUser() |
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154 | if user is not None: |
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155 | #print "user: ", user |
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156 | return (user.getUserName() != "Anonymous User") |
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157 | else: |
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158 | return False |
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159 | |
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160 | zLOG.LOG("documentViewer (accessOK)", zLOG.INFO, "unknown access type %s"%access) |
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161 | return False |
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162 | |
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163 | |
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164 | def getDirinfoFromDigilib(self,path,docinfo=None): |
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165 | """gibt param von dlInfo aus""" |
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166 | if docinfo is None: |
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167 | docinfo = {} |
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168 | |
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169 | imageUrl=self.digilibBaseUrl+"/dirInfo-xml.jsp?mo=dir&fn="+path |
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170 | |
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171 | zLOG.LOG("documentViewer (getparamfromdigilib)", zLOG.INFO, "dirInfo from %s"%(imageUrl)) |
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172 | |
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173 | for cnt in (1,2,3): |
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174 | try: |
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175 | dom = NonvalidatingReader.parseUri(imageUrl) |
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176 | break |
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177 | except: |
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178 | zLOG.LOG("documentViewer (getdirinfofromdigilib)", zLOG.ERROR, "error reading %s (try %d)"%(imageUrl,cnt)) |
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179 | else: |
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180 | raise IOError("Unable to get dir-info from %s"%(imageUrl)) |
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181 | |
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182 | sizes=dom.xpath("//dir/size") |
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183 | zLOG.LOG("documentViewer (getparamfromdigilib)", zLOG.INFO, "dirInfo:size"%sizes) |
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184 | |
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185 | if sizes: |
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186 | docinfo['numPages'] = int(getTextFromNode(sizes[0])) |
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187 | else: |
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188 | docinfo['numPages'] = 0 |
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189 | |
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190 | return docinfo |
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191 | |
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192 | |
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193 | def getIndexMeta(self, url): |
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194 | """returns dom of index.meta document at url""" |
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195 | num_retries = 3 |
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196 | dom = None |
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197 | metaUrl = None |
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198 | if url.startswith("http://"): |
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199 | # real URL |
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200 | metaUrl = url |
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201 | try: |
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202 | dom = NonvalidatingReader.parseUri(url) |
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203 | except: |
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204 | zLOG.LOG("documentViewer (getIndexMata)", zLOG.INFO,"%s (%s)"%sys.exc_info()[0:2]) |
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205 | raise IOError("Unable to read index.meta from %s"%(url)) |
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206 | else: |
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207 | # online path |
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208 | server=self.digilibBaseUrl+"/servlet/Texter?fn=" |
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209 | metaUrl=server+url |
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210 | if not metaUrl.endswith("index.meta"): |
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211 | metaUrl += "/index.meta" |
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212 | |
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213 | for n in range(num_retries): |
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214 | try: |
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215 | dom = NonvalidatingReader.parseUri(metaUrl) |
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216 | zLOG.LOG("documentViewer (getIndexMata)", zLOG.INFO,metaUrl) |
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217 | break |
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218 | except: |
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219 | zLOG.LOG("ERROR documentViewer (getIndexMata)", zLOG.INFO,"%s (%s)"%sys.exc_info()[0:2]) |
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220 | |
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221 | if dom is None: |
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222 | raise IOError("Unable to read index meta from %s"%(url)) |
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223 | |
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224 | return dom |
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225 | |
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226 | |
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227 | def getAuthinfoFromIndexMeta(self,path,docinfo=None,dom=None): |
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228 | """gets authorization info from the index.meta file at path or given by dom""" |
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229 | zLOG.LOG("documentViewer (getauthinfofromindexmeta)", zLOG.INFO,"path: %s"%(path)) |
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230 | |
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231 | access = None |
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232 | |
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233 | if docinfo is None: |
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234 | docinfo = {} |
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235 | |
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236 | if dom is None: |
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237 | dom = self.getIndexMeta(getParentDir(path)) |
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238 | |
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239 | acctype = dom.xpath("//access-conditions/access/@type") |
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240 | if acctype and (len(acctype)>0): |
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241 | access=acctype[0].value |
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242 | if access in ['group', 'institution']: |
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243 | access = getTextFromNode(dom.xpath("//access-conditions/access/name")[0]).lower() |
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244 | |
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245 | docinfo['accessType'] = access |
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246 | return docinfo |
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247 | |
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248 | |
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249 | def getBibinfoFromIndexMeta(self,path,docinfo=None,dom=None): |
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250 | """gets bibliographical info from the index.meta file at path or given by dom""" |
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251 | zLOG.LOG("documentViewer (getbibinfofromindexmeta)", zLOG.INFO,"path: %s"%(path)) |
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252 | |
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253 | if docinfo is None: |
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254 | docinfo = {} |
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255 | |
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256 | if dom is None: |
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257 | dom = self.getIndexMeta(getParentDir(path)) |
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258 | |
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259 | metaData=self.metadata.main.meta.bib |
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260 | bibtype=dom.xpath("//bib/@type") |
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261 | if bibtype and (len(bibtype)>0): |
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262 | bibtype=bibtype[0].value |
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263 | else: |
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264 | bibtype="generic" |
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265 | bibtype=bibtype.replace("-"," ") # wrong typesiin index meta "-" instead of " " (not wrong! ROC) |
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266 | bibmap=metaData.generateMappingForType(bibtype) |
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267 | #print "bibmap: ", bibmap, " for: ", bibtype |
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268 | # if there is no mapping bibmap is empty (mapping sometimes has empty fields) |
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269 | if len(bibmap) > 0 and len(bibmap['author'][0]) > 0: |
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270 | docinfo['author']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['author'][0])[0]) |
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271 | docinfo['title']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['title'][0])[0]) |
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272 | docinfo['year']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['year'][0])[0]) |
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273 | |
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274 | return docinfo |
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275 | |
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276 | |
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277 | def getDocinfoFromTextTool(self,url,dom=None,docinfo=None): |
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278 | """parse texttool tag in index meta""" |
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279 | zLOG.LOG("documentViewer (getdocinfofromtexttool)", zLOG.INFO,"url: %s"%(url)) |
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280 | if docinfo is None: |
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281 | docinfo = {} |
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282 | |
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283 | if dom is None: |
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284 | dom = self.getIndexMeta(url) |
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285 | |
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286 | archiveNames=dom.xpath("//resource/name") |
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287 | if archiveNames and (len(archiveNames)>0): |
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288 | archiveName=getTextFromNode(archiveNames[0]) |
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289 | |
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290 | archivePaths=dom.xpath("//resource/archive-path") |
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291 | if archivePaths and (len(archivePaths)>0): |
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292 | archivePath=getTextFromNode(archivePaths[0]) |
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293 | # clean up archive path |
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294 | if archivePath[0] != '/': |
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295 | archivePath = '/' + archivePath |
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296 | if not archivePath.endswith(archiveName): |
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297 | archivePath += "/" + archiveName |
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298 | else: |
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299 | archivePath=None |
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300 | |
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301 | imageDirs=dom.xpath("//texttool/image") |
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302 | if imageDirs and (len(imageDirs)>0): |
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303 | imageDir=getTextFromNode(imageDirs[0]) |
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304 | else: |
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305 | # we balk with no image tag |
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306 | raise IOError("No text-tool info in %s"%(url)) |
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307 | |
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308 | if imageDir and archivePath: |
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309 | #print "image: ", imageDir, " archivepath: ", archivePath |
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310 | imageDir=os.path.join(archivePath,imageDir) |
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311 | imageDir=imageDir.replace("/mpiwg/online",'') |
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312 | docinfo=self.getDirinfoFromDigilib(imageDir,docinfo=docinfo) |
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313 | docinfo['imagePath'] = imageDir |
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314 | docinfo['imageURL'] = self.digilibBaseUrl+"/servlet/Scaler?fn="+imageDir |
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315 | |
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316 | viewerUrls=dom.xpath("//texttool/digiliburlprefix") |
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317 | if viewerUrls and (len(viewerUrls)>0): |
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318 | viewerUrl=getTextFromNode(viewerUrls[0]) |
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319 | docinfo['viewerURL'] = viewerUrl |
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320 | |
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321 | textUrls=dom.xpath("//texttool/text") |
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322 | if textUrls and (len(textUrls)>0): |
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323 | textUrl=getTextFromNode(textUrls[0]) |
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324 | docinfo['textURL'] = textUrl |
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325 | |
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326 | docinfo = self.getBibinfoFromIndexMeta(url,docinfo=docinfo,dom=dom) |
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327 | docinfo = self.getAuthinfoFromIndexMeta(url,docinfo=docinfo,dom=dom) |
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328 | return docinfo |
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329 | |
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330 | |
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331 | def getDocinfoFromImagePath(self,path,docinfo=None): |
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332 | """path ist the path to the images it assumes that the index.meta file is one level higher.""" |
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333 | zLOG.LOG("documentViewer (getdocinfofromimagepath)", zLOG.INFO,"path: %s"%(path)) |
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334 | if docinfo is None: |
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335 | docinfo = {} |
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336 | path=path.replace("/mpiwg/online","") |
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337 | docinfo['imagePath'] = path |
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338 | docinfo=self.getDirinfoFromDigilib(path,docinfo=docinfo) |
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339 | imageUrl=self.digilibBaseUrl+"/servlet/Scaler?fn="+path |
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340 | docinfo['imageURL'] = imageUrl |
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341 | |
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342 | docinfo = self.getBibinfoFromIndexMeta(path,docinfo=docinfo) |
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343 | docinfo = self.getAuthinfoFromIndexMeta(path,docinfo=docinfo) |
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344 | return docinfo |
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345 | |
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346 | |
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347 | def getDocinfo(self, mode, url): |
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348 | """returns docinfo depending on mode""" |
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349 | zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"mode: %s, url: %s"%(mode,url)) |
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350 | # look for cached docinfo in session |
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351 | if self.REQUEST.SESSION.has_key('docinfo'): |
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352 | docinfo = self.REQUEST.SESSION['docinfo'] |
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353 | # check if its still current |
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354 | if docinfo is not None and docinfo.get('mode') == mode and docinfo.get('url') == url: |
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355 | zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"docinfo in session: %s"%docinfo) |
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356 | return docinfo |
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357 | # new docinfo |
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358 | docinfo = {'mode': mode, 'url': url} |
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359 | if mode=="texttool": #index.meta with texttool information |
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360 | docinfo = self.getDocinfoFromTextTool(url, docinfo=docinfo) |
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361 | elif mode=="imagepath": |
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362 | docinfo = self.getDocinfoFromImagePath(url, docinfo=docinfo) |
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363 | else: |
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364 | zLOG.LOG("documentViewer (getdocinfo)", zLOG.ERROR,"unknown mode!") |
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365 | raise ValueError("Unknown mode %s"%(mode)) |
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366 | |
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367 | zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"docinfo: %s"%docinfo) |
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368 | self.REQUEST.SESSION['docinfo'] = docinfo |
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369 | return docinfo |
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370 | |
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371 | |
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372 | def getPageinfo(self, current, start=None, rows=None, cols=None, docinfo=None): |
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373 | """returns pageinfo with the given parameters""" |
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374 | pageinfo = {} |
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375 | current = getInt(current) |
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376 | pageinfo['current'] = current |
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377 | rows = int(rows or self.thumbrows) |
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378 | pageinfo['rows'] = rows |
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379 | cols = int(cols or self.thumbcols) |
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380 | pageinfo['cols'] = cols |
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381 | grpsize = cols * rows |
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382 | pageinfo['groupsize'] = grpsize |
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383 | start = getInt(start, default=(int(current / grpsize) * grpsize +1)) |
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384 | pageinfo['start'] = start |
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385 | pageinfo['end'] = start + grpsize |
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386 | if docinfo is not None: |
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387 | np = int(docinfo['numPages']) |
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388 | pageinfo['end'] = min(pageinfo['end'], np) |
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389 | pageinfo['numgroups'] = int(np / grpsize) |
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390 | if np % grpsize > 0: |
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391 | pageinfo['numgroups'] += 1 |
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392 | |
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393 | return pageinfo |
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394 | |
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395 | def text(self,mode,url,pn): |
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396 | """give text""" |
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397 | if mode=="texttool": #index.meta with texttool information |
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398 | (viewerUrl,imagepath,textpath)=parseUrlTextTool(url) |
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399 | |
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400 | #print textpath |
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401 | try: |
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402 | dom = NonvalidatingReader.parseUri(textpath) |
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403 | except: |
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404 | return None |
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405 | |
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406 | list=[] |
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407 | nodes=dom.xpath("//pb") |
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408 | |
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409 | node=nodes[int(pn)-1] |
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410 | |
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411 | p=node |
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412 | |
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413 | while p.tagName!="p": |
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414 | p=p.parentNode |
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415 | |
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416 | |
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417 | endNode=nodes[int(pn)] |
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418 | |
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419 | |
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420 | e=endNode |
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421 | |
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422 | while e.tagName!="p": |
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423 | e=e.parentNode |
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424 | |
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425 | |
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426 | next=node.parentNode |
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427 | |
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428 | #sammle s |
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429 | while next and (next!=endNode.parentNode): |
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430 | list.append(next) |
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431 | next=next.nextSibling |
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432 | list.append(endNode.parentNode) |
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433 | |
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434 | if p==e:# beide im selben paragraphen |
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435 | pass |
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436 | # else: |
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437 | # next=p |
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438 | # while next!=e: |
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439 | # print next,e |
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440 | # list.append(next) |
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441 | # next=next.nextSibling |
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442 | # |
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443 | # for x in list: |
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444 | # PrettyPrint(x) |
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445 | # |
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446 | # return list |
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447 | # |
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448 | |
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449 | def findDigilibUrl(self): |
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450 | """try to get the digilib URL from zogilib""" |
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451 | url = self.imageViewerUrl[:-1] + "/getScalerUrl" |
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452 | try: |
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453 | scaler = urlopen(url).read() |
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454 | return scaler.replace("/servlet/Scaler?", "") |
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455 | except: |
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456 | return None |
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457 | |
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458 | def changeDocumentViewer(self,imageViewerUrl,title="",digilibBaseUrl=None,thumbrows=2,thumbcols=10,authgroups='mpiwg',RESPONSE=None): |
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459 | """init document viewer""" |
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460 | self.title=title |
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461 | self.imageViewerUrl=imageViewerUrl |
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462 | self.digilibBaseUrl = digilibBaseUrl |
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463 | self.thumbrows = thumbrows |
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464 | self.thumbcols = thumbcols |
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465 | self.authgroups = [s.strip().lower() for s in authgroups.split(',')] |
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466 | if RESPONSE is not None: |
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467 | RESPONSE.redirect('manage_main') |
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468 | |
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469 | |
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470 | |
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471 | |
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472 | # security.declareProtected('View management screens','renameImageForm') |
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473 | |
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474 | def manage_AddDocumentViewerForm(self): |
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475 | """add the viewer form""" |
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476 | pt=PageTemplateFile('zpt/addDocumentViewer', globals()).__of__(self) |
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477 | return pt() |
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478 | |
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479 | def manage_AddDocumentViewer(self,id,imageViewerUrl="",title="",RESPONSE=None): |
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480 | """add the viewer""" |
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481 | newObj=documentViewer(id,imageViewerUrl,title) |
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482 | self._setObject(id,newObj) |
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483 | |
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484 | if RESPONSE is not None: |
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485 | RESPONSE.redirect('manage_main') |
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486 | |
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487 | |
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488 | ## |
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489 | ## DocumentViewerTemplate class |
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490 | ## |
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491 | class DocumentViewerTemplate(ZopePageTemplate): |
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492 | """Template for document viewer""" |
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493 | meta_type="DocumentViewer Template" |
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494 | |
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495 | |
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496 | def manage_addDocumentViewerTemplateForm(self): |
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497 | """Form for adding""" |
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498 | pt=PageTemplateFile('zpt/addDocumentViewerTemplate', globals()).__of__(self) |
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499 | return pt() |
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500 | |
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501 | def manage_addDocumentViewerTemplate(self, id='viewer_main', title=None, text=None, |
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502 | REQUEST=None, submit=None): |
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503 | "Add a Page Template with optional file content." |
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504 | |
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505 | self._setObject(id, DocumentViewerTemplate(id)) |
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506 | ob = getattr(self, id) |
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507 | ob.pt_edit(open(os.path.join(package_home(globals()),'zpt/viewer_main.zpt')).read(),None) |
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508 | if title: |
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509 | ob.pt_setTitle(title) |
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510 | try: |
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511 | u = self.DestinationURL() |
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512 | except AttributeError: |
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513 | u = REQUEST['URL1'] |
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514 | |
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515 | u = "%s/%s" % (u, urllib.quote(id)) |
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516 | REQUEST.RESPONSE.redirect(u+'/manage_main') |
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517 | return '' |
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518 | |
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519 | |
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520 | |
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