File:  [Repository] / documentViewer / documentViewer.py
Revision 1.35: download - view: text, annotated - select for diffs - revision graph
Tue Nov 4 20:23:49 2008 UTC (15 years, 7 months ago) by dwinter
Branches: MAIN
CVS tags: HEAD
minor

    1: 
    2: 
    3: from OFS.Folder import Folder
    4: from Products.PageTemplates.ZopePageTemplate import ZopePageTemplate
    5: from Products.PageTemplates.PageTemplateFile import PageTemplateFile 
    6: from AccessControl import ClassSecurityInfo
    7: from AccessControl import getSecurityManager
    8: from Globals import package_home
    9: 
   10: from Ft.Xml.Domlette import NonvalidatingReader
   11: from Ft.Xml.Domlette import PrettyPrint, Print
   12: from Ft.Xml import EMPTY_NAMESPACE, Parse
   13: 
   14: import Ft.Xml.XPath
   15: 
   16: import os.path
   17: import sys
   18: import cgi
   19: import urllib
   20: import logging
   21: import math
   22: 
   23: import urlparse 
   24: 
   25: def logger(txt,method,txt2):
   26:     """logging"""
   27:     logging.info(txt+ txt2)
   28:     
   29:     
   30: def getInt(number, default=0):
   31:     """returns always an int (0 in case of problems)"""
   32:     try:
   33:         return int(number)
   34:     except:
   35:         return int(default)
   36: 
   37: def getTextFromNode(nodename):
   38:     """get the cdata content of a node"""
   39:     if nodename is None:
   40:         return ""
   41:     nodelist=nodename.childNodes
   42:     rc = ""
   43:     for node in nodelist:
   44:         if node.nodeType == node.TEXT_NODE:
   45:            rc = rc + node.data
   46:     return rc
   47: 
   48:         
   49: def getParentDir(path):
   50:     """returns pathname shortened by one"""
   51:     return '/'.join(path.split('/')[0:-1])
   52:         
   53: 
   54: import socket
   55: 
   56: def urlopen(url,timeout=2):
   57:         """urlopen mit timeout"""
   58:         socket.setdefaulttimeout(timeout)
   59:         ret=urllib.urlopen(url)
   60:         socket.setdefaulttimeout(5)
   61:         return ret
   62: 
   63: 
   64: ##
   65: ## documentViewer class
   66: ##
   67: class documentViewer(Folder):
   68:     """document viewer"""
   69:     #textViewerUrl="http://127.0.0.1:8080/HFQP/testXSLT/getPage?"
   70:     
   71:     meta_type="Document viewer"
   72:     
   73:     security=ClassSecurityInfo()
   74:     manage_options=Folder.manage_options+(
   75:         {'label':'main config','action':'changeDocumentViewerForm'},
   76:         )
   77: 
   78:     # templates and forms
   79:     viewer_main = PageTemplateFile('zpt/viewer_main', globals())
   80:     thumbs_main = PageTemplateFile('zpt/thumbs_main', globals())
   81:     image_main = PageTemplateFile('zpt/image_main', globals())
   82:     head_main = PageTemplateFile('zpt/head_main', globals())
   83:     docuviewer_css = PageTemplateFile('css/docuviewer.css', globals())
   84:     info_xml = PageTemplateFile('zpt/info_xml', globals())
   85: 
   86:     thumbs_main_rss = PageTemplateFile('zpt/thumbs_main_rss', globals())
   87:     security.declareProtected('View management screens','changeDocumentViewerForm')    
   88:     changeDocumentViewerForm = PageTemplateFile('zpt/changeDocumentViewer', globals())
   89: 
   90:     
   91:     def __init__(self,id,imageViewerUrl,textViewerUrl=None,title="",digilibBaseUrl=None,thumbcols=2,thumbrows=10,authgroups="mpiwg"):
   92:         """init document viewer"""
   93:         self.id=id
   94:         self.title=title
   95:         self.imageViewerUrl=imageViewerUrl
   96:         self.textViewerUrl=textViewerUrl
   97:         
   98:         if not digilibBaseUrl:
   99:             self.digilibBaseUrl = self.findDigilibUrl()
  100:         else:
  101:             self.digilibBaseUrl = digilibBaseUrl
  102:         self.thumbcols = thumbcols
  103:         self.thumbrows = thumbrows
  104:         # authgroups is list of authorized groups (delimited by ,)
  105:         self.authgroups = [s.strip().lower() for s in authgroups.split(',')]
  106:         # add template folder so we can always use template.something
  107:         self.manage_addFolder('template')
  108: 
  109: 
  110:     security.declareProtected('View','thumbs_rss')
  111:     def thumbs_rss(self,mode,url,viewMode="auto",start=None,pn=1):
  112:         '''
  113:         view it
  114:         @param mode: defines how to access the document behind url 
  115:         @param url: url which contains display information
  116:         @param viewMode: if images display images, if text display text, default is images (text,images or auto)
  117:         
  118:         '''
  119:         logging.info("HHHHHHHHHHHHHH:load the rss")
  120:         logger("documentViewer (index)", logging.INFO, "mode: %s url:%s start:%s pn:%s"%(mode,url,start,pn))
  121:         
  122:         if not hasattr(self, 'template'):
  123:             # create template folder if it doesn't exist
  124:             self.manage_addFolder('template')
  125:             
  126:         if not self.digilibBaseUrl:
  127:             self.digilibBaseUrl = self.findDigilibUrl() or "http://nausikaa.mpiwg-berlin.mpg.de/digitallibrary"
  128:             
  129:         docinfo = self.getDocinfo(mode=mode,url=url)
  130:         pageinfo = self.getPageinfo(start=start,current=pn,docinfo=docinfo)
  131:         pt = getattr(self.template, 'thumbs_main_rss')
  132:         
  133:         if viewMode=="auto": # automodus gewaehlt
  134:             if docinfo.get("textURL",'') and self.textViewerUrl: #texturl gesetzt und textViewer konfiguriert
  135:                 viewMode="text"
  136:             else:
  137:                 viewMode="images"
  138:                
  139:         return pt(docinfo=docinfo,pageinfo=pageinfo,viewMode=viewMode)
  140:   
  141:     security.declareProtected('View','index_html')
  142:     def index_html(self,mode,url,viewMode="auto",start=None,pn=1):
  143:         '''
  144:         view it
  145:         @param mode: defines how to access the document behind url 
  146:         @param url: url which contains display information
  147:         @param viewMode: if images display images, if text display text, default is images (text,images or auto)
  148:         
  149:         '''
  150:         
  151:         logger("documentViewer (index)", logging.INFO, "mode: %s url:%s start:%s pn:%s"%(mode,url,start,pn))
  152:         
  153:         if not hasattr(self, 'template'):
  154:             # create template folder if it doesn't exist
  155:             self.manage_addFolder('template')
  156:             
  157:         if not self.digilibBaseUrl:
  158:             self.digilibBaseUrl = self.findDigilibUrl() or "http://nausikaa.mpiwg-berlin.mpg.de/digitallibrary"
  159:             
  160:         docinfo = self.getDocinfo(mode=mode,url=url)
  161:         pageinfo = self.getPageinfo(start=start,current=pn,docinfo=docinfo)
  162:         pt = getattr(self.template, 'viewer_main')
  163:         
  164:         if viewMode=="auto": # automodus gewaehlt
  165:             if docinfo.get("textURL",'') and self.textViewerUrl: #texturl gesetzt und textViewer konfiguriert
  166:                 viewMode="text"
  167:             else:
  168:                 viewMode="images"
  169:                
  170:         return pt(docinfo=docinfo,pageinfo=pageinfo,viewMode=viewMode)
  171:   
  172:   
  173:     def getLink(self,param=None,val=None):
  174:         """link to documentviewer with parameter param set to val"""
  175:         params=self.REQUEST.form.copy()
  176:         if param is not None:
  177:             if val is None:
  178:                 if params.has_key(param):
  179:                     del params[param]
  180:             else:
  181:                 params[param] = str(val)
  182:                 
  183:         # quote values and assemble into query string
  184:         ps = "&".join(["%s=%s"%(k,urllib.quote(v)) for (k, v) in params.items()])
  185:         url=self.REQUEST['URL1']+"?"+ps
  186:         return url
  187: 
  188:     def getLinkAmp(self,param=None,val=None):
  189:         """link to documentviewer with parameter param set to val"""
  190:         params=self.REQUEST.form.copy()
  191:         if param is not None:
  192:             if val is None:
  193:                 if params.has_key(param):
  194:                     del params[param]
  195:             else:
  196:                 params[param] = str(val)
  197:                 
  198:         # quote values and assemble into query string
  199:         logging.info("XYXXXXX: %s"%repr(params.items()))
  200:         ps = "&".join(["%s=%s"%(k,urllib.quote(v)) for (k, v) in params.items()])
  201:         url=self.REQUEST['URL1']+"?"+ps
  202:         return url
  203:     def getInfo_xml(self,url,mode):
  204:         """returns info about the document as XML"""
  205: 
  206:         if not self.digilibBaseUrl:
  207:             self.digilibBaseUrl = self.findDigilibUrl() or "http://nausikaa.mpiwg-berlin.mpg.de/digitallibrary"
  208:         
  209:         docinfo = self.getDocinfo(mode=mode,url=url)
  210:         pt = getattr(self.template, 'info_xml')
  211:         return pt(docinfo=docinfo)
  212: 
  213:     
  214:     def getStyle(self, idx, selected, style=""):
  215:         """returns a string with the given style and append 'sel' if path == selected."""
  216:         #logger("documentViewer (getstyle)", logging.INFO, "idx: %s selected: %s style: %s"%(idx,selected,style))
  217:         if idx == selected:
  218:             return style + 'sel'
  219:         else:
  220:             return style
  221: 
  222:         
  223:     def isAccessible(self, docinfo):
  224:         """returns if access to the resource is granted"""
  225:         access = docinfo.get('accessType', None)
  226:         logger("documentViewer (accessOK)", logging.INFO, "access type %s"%access)
  227:         if access is not None and access == 'free':
  228:             logger("documentViewer (accessOK)", logging.INFO, "access is free")
  229:             return True
  230:         elif access is None or access in self.authgroups:
  231:             # only local access -- only logged in users
  232:             user = getSecurityManager().getUser()
  233:             if user is not None:
  234:                 #print "user: ", user
  235:                 return (user.getUserName() != "Anonymous User")
  236:             else:
  237:                 return False
  238:         
  239:         logger("documentViewer (accessOK)", logging.INFO, "unknown access type %s"%access)
  240:         return False
  241:     
  242:                 
  243:     def getDirinfoFromDigilib(self,path,docinfo=None,cut=0):
  244:         """gibt param von dlInfo aus"""
  245:         num_retries = 3
  246:         if docinfo is None:
  247:             docinfo = {}
  248:         
  249:         for x in range(cut):
  250:                 path=getParentDir(path)
  251:         infoUrl=self.digilibBaseUrl+"/dirInfo-xml.jsp?mo=dir&fn="+path
  252:     
  253:         logger("documentViewer (getparamfromdigilib)", logging.INFO, "dirInfo from %s"%(infoUrl))
  254:         
  255:         for cnt in range(num_retries):
  256:             try:
  257:                 # dom = NonvalidatingReader.parseUri(imageUrl)
  258:                 txt=urllib.urlopen(infoUrl).read()
  259:                 dom = Parse(txt)
  260:                 break
  261:             except:
  262:                 logger("documentViewer (getdirinfofromdigilib)", logging.ERROR, "error reading %s (try %d)"%(infoUrl,cnt))
  263:         else:
  264:             raise IOError("Unable to get dir-info from %s"%(infoUrl))
  265:         
  266:         sizes=dom.xpath("//dir/size")
  267:         logger("documentViewer (getparamfromdigilib)", logging.INFO, "dirInfo:size"%sizes)
  268:         
  269:         if sizes:
  270:             docinfo['numPages'] = int(getTextFromNode(sizes[0]))
  271:         else:
  272:             docinfo['numPages'] = 0
  273:                         
  274:         return docinfo
  275:     
  276:             
  277:     def getIndexMeta(self, url):
  278:         """returns dom of index.meta document at url"""
  279:         num_retries = 3
  280:         dom = None
  281:         metaUrl = None
  282:         if url.startswith("http://"):
  283:             # real URL
  284:             metaUrl = url
  285:         else:
  286:             # online path
  287:             server=self.digilibBaseUrl+"/servlet/Texter?fn="
  288:             metaUrl=server+url.replace("/mpiwg/online","")
  289:             if not metaUrl.endswith("index.meta"):
  290:                 metaUrl += "/index.meta"
  291:         print metaUrl
  292:         for cnt in range(num_retries):
  293:             try:
  294:                 # patch dirk encoding fehler treten dann nicht mehr auf
  295:                 # dom = NonvalidatingReader.parseUri(metaUrl)
  296:                 txt=urllib.urlopen(metaUrl).read()
  297:                 dom = Parse(txt)
  298:                 break
  299:             except:
  300:                 logger("ERROR documentViewer (getIndexMata)", logging.INFO,"%s (%s)"%sys.exc_info()[0:2])
  301:                 
  302:         if dom is None:
  303:             raise IOError("Unable to read index meta from %s"%(url))
  304:                  
  305:         return dom
  306:     
  307:     def getPresentationInfoXML(self, url):
  308:         """returns dom of info.xml document at url"""
  309:         num_retries = 3
  310:         dom = None
  311:         metaUrl = None
  312:         if url.startswith("http://"):
  313:             # real URL
  314:             metaUrl = url
  315:         else:
  316:             # online path
  317:             server=self.digilibBaseUrl+"/servlet/Texter?fn="
  318:             metaUrl=server+url.replace("/mpiwg/online","")
  319:            
  320:         
  321:         for cnt in range(num_retries):
  322:             try:
  323:                 # patch dirk encoding fehler treten dann nicht mehr auf
  324:                 # dom = NonvalidatingReader.parseUri(metaUrl)
  325:                 txt=urllib.urlopen(metaUrl).read()
  326:                 dom = Parse(txt)
  327:                 break
  328:             except:
  329:                 logger("ERROR documentViewer (getPresentationInfoXML)", logging.INFO,"%s (%s)"%sys.exc_info()[0:2])
  330:                 
  331:         if dom is None:
  332:             raise IOError("Unable to read infoXMLfrom %s"%(url))
  333:                  
  334:         return dom
  335:                         
  336:         
  337:     def getAuthinfoFromIndexMeta(self,path,docinfo=None,dom=None,cut=0):
  338:         """gets authorization info from the index.meta file at path or given by dom"""
  339:         logger("documentViewer (getauthinfofromindexmeta)", logging.INFO,"path: %s"%(path))
  340:         
  341:         access = None
  342:         
  343:         if docinfo is None:
  344:             docinfo = {}
  345:             
  346:         if dom is None:
  347:             for x in range(cut+1):
  348:                 path=getParentDir(path)
  349:             dom = self.getIndexMeta(path)
  350:        
  351:         acctype = dom.xpath("//access-conditions/access/@type")
  352:         if acctype and (len(acctype)>0):
  353:             access=acctype[0].value
  354:             if access in ['group', 'institution']:
  355:                 access = getTextFromNode(dom.xpath("//access-conditions/access/name")[0]).lower()
  356:             
  357:         docinfo['accessType'] = access
  358:         return docinfo
  359:     
  360:         
  361:     def getBibinfoFromIndexMeta(self,path,docinfo=None,dom=None,cut=0):
  362:         """gets bibliographical info from the index.meta file at path or given by dom"""
  363:         logging.debug("documentViewer (getbibinfofromindexmeta) path: %s"%(path))
  364:         
  365:         if docinfo is None:
  366:             docinfo = {}
  367:             
  368:         if dom is None:
  369:             for x in range(cut+1):
  370:                 path=getParentDir(path)
  371:             dom = self.getIndexMeta(path)
  372:             
  373:         # put in all raw bib fields as dict "bib"
  374:         bib = dom.xpath("//bib/*")
  375:         if bib and len(bib)>0:
  376:             bibinfo = {}
  377:             for e in bib:
  378:                 bibinfo[e.localName] = getTextFromNode(e)
  379:             docinfo['bib'] = bibinfo
  380:         
  381:         # extract some fields (author, title, year) according to their mapping
  382:         metaData=self.metadata.main.meta.bib
  383:         bibtype=dom.xpath("//bib/@type")
  384:         if bibtype and (len(bibtype)>0):
  385:             bibtype=bibtype[0].value
  386:         else:
  387:             bibtype="generic"
  388:             
  389:         bibtype=bibtype.replace("-"," ") # wrong typesiin index meta "-" instead of " " (not wrong! ROC)
  390:         docinfo['bib_type'] = bibtype
  391:         bibmap=metaData.generateMappingForType(bibtype)
  392:         # if there is no mapping bibmap is empty (mapping sometimes has empty fields)
  393:         if len(bibmap) > 0 and len(bibmap['author'][0]) > 0:
  394:             try:
  395:                 docinfo['author']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['author'][0])[0])
  396:             except: pass
  397:             try:
  398:                 docinfo['title']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['title'][0])[0])
  399:             except: pass
  400:             try:
  401:                 docinfo['year']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['year'][0])[0])
  402:             except: pass
  403:             logging.debug("documentViewer (getbibinfofromindexmeta) using mapping for %s"%bibtype)
  404:             try:
  405:                 docinfo['lang']=getTextFromNode(dom.xpath("//bib/lang")[0])
  406:             except:
  407:                 docinfo['lang']=''
  408: 
  409:         return docinfo
  410: 
  411:         
  412:     def getDocinfoFromTextTool(self,url,dom=None,docinfo=None):
  413:        """parse texttool tag in index meta"""
  414:        logger("documentViewer (getdocinfofromtexttool)", logging.INFO,"url: %s"%(url))
  415:        if docinfo is None:
  416:            docinfo = {}
  417:            
  418:        if docinfo.get('lang',None) is None:
  419:            docinfo['lang']='' # default keine Sprache gesetzt
  420:        if dom is None:
  421:            dom = self.getIndexMeta(url)
  422:        
  423:        archivePath = None
  424:        archiveName = None
  425: 
  426:        archiveNames=dom.xpath("//resource/name")
  427:        if archiveNames and (len(archiveNames)>0):
  428:            archiveName=getTextFromNode(archiveNames[0])
  429:        else:
  430:            logger("documentViewer (getdocinfofromtexttool)", logging.WARNING,"resource/name missing in: %s"%(url))
  431:        
  432:        archivePaths=dom.xpath("//resource/archive-path")
  433:        if archivePaths and (len(archivePaths)>0):
  434:            archivePath=getTextFromNode(archivePaths[0])
  435:            # clean up archive path
  436:            if archivePath[0] != '/':
  437:                archivePath = '/' + archivePath
  438:            if archiveName and (not archivePath.endswith(archiveName)):
  439:                archivePath += "/" + archiveName
  440:        else:
  441:            # try to get archive-path from url
  442:            logger("documentViewer (getdocinfofromtexttool)", logging.WARNING,"resource/archive-path missing in: %s"%(url))
  443:            if (not url.startswith('http')):
  444:                archivePath = url.replace('index.meta', '')
  445:                
  446:        if archivePath is None:
  447:            # we balk without archive-path
  448:            raise IOError("Missing archive-path (for text-tool) in %s"%(url))
  449:        
  450:        imageDirs=dom.xpath("//texttool/image")
  451:        if imageDirs and (len(imageDirs)>0):
  452:            imageDir=getTextFromNode(imageDirs[0])
  453:        else:
  454:            # we balk with no image tag / not necessary anymore because textmode is now standard
  455:            #raise IOError("No text-tool info in %s"%(url))
  456:            imageDir=""
  457:            docinfo['numPages']=1 # im moment einfach auf eins setzen, navigation ueber die thumbs geht natuerlich nicht
  458:        
  459:            docinfo['imagePath'] = "" # keine Bilder
  460:            docinfo['imageURL'] = ""
  461: 
  462:        if imageDir and archivePath:
  463:            #print "image: ", imageDir, " archivepath: ", archivePath
  464:            imageDir=os.path.join(archivePath,imageDir)
  465:            imageDir=imageDir.replace("/mpiwg/online",'')
  466:            docinfo=self.getDirinfoFromDigilib(imageDir,docinfo=docinfo)
  467:            docinfo['imagePath'] = imageDir
  468:            docinfo['imageURL'] = self.digilibBaseUrl+"/servlet/Scaler?fn="+imageDir
  469:            
  470:        viewerUrls=dom.xpath("//texttool/digiliburlprefix")
  471:        if viewerUrls and (len(viewerUrls)>0):
  472:            viewerUrl=getTextFromNode(viewerUrls[0])
  473:            docinfo['viewerURL'] = viewerUrl
  474:                   
  475:        textUrls=dom.xpath("//texttool/text")
  476:        if textUrls and (len(textUrls)>0):
  477:            textUrl=getTextFromNode(textUrls[0])
  478:            if urlparse.urlparse(textUrl)[0]=="": #keine url
  479:                textUrl=os.path.join(archivePath,textUrl) 
  480:            # fix URLs starting with /mpiwg/online
  481:            if textUrl.startswith("/mpiwg/online"):
  482:                textUrl = textUrl.replace("/mpiwg/online",'',1)
  483:            
  484:            docinfo['textURL'] = textUrl
  485:    
  486:        presentationUrls=dom.xpath("//texttool/presentation")
  487:        docinfo = self.getBibinfoFromIndexMeta(url,docinfo=docinfo,dom=dom)   # get info von bib tag
  488:        
  489:        if presentationUrls and (len(presentationUrls)>0): # ueberschreibe diese durch presentation informationen 
  490:             # presentation url ergiebt sich ersetzen von index.meta in der url der fuer die Metadaten
  491:             # durch den relativen Pfad auf die presentation infos
  492:            presentationUrl=url.replace('index.meta',getTextFromNode(presentationUrls[0]))
  493:            docinfo = self.getBibinfoFromTextToolPresentation(presentationUrl,docinfo=docinfo,dom=dom)
  494: 
  495:        docinfo = self.getAuthinfoFromIndexMeta(url,docinfo=docinfo,dom=dom)   # get access info
  496:        return docinfo
  497:    
  498:    
  499:     def getBibinfoFromTextToolPresentation(self,url,docinfo=None,dom=None):
  500:         """gets the bibliographical information from the preseantion entry in texttools
  501:         """
  502:         dom=self.getPresentationInfoXML(url)
  503:         try:
  504:             docinfo['author']=getTextFromNode(dom.xpath("//author")[0])
  505:         except:
  506:             pass
  507:         try:
  508:             docinfo['title']=getTextFromNode(dom.xpath("//title")[0])
  509:         except:
  510:             pass
  511:         try:
  512:             docinfo['year']=getTextFromNode(dom.xpath("//date")[0])
  513:         except:
  514:             pass
  515:         return docinfo
  516:     
  517:     def getDocinfoFromImagePath(self,path,docinfo=None,cut=0):
  518:         """path ist the path to the images it assumes that the index.meta file is one level higher."""
  519:         logger("documentViewer (getdocinfofromimagepath)", logging.INFO,"path: %s"%(path))
  520:         if docinfo is None:
  521:             docinfo = {}
  522:         path=path.replace("/mpiwg/online","")
  523:         docinfo['imagePath'] = path
  524:         docinfo=self.getDirinfoFromDigilib(path,docinfo=docinfo,cut=cut)
  525:         imageUrl=self.digilibBaseUrl+"/servlet/Scaler?fn="+path
  526:         docinfo['imageURL'] = imageUrl
  527:         
  528:         docinfo = self.getBibinfoFromIndexMeta(path,docinfo=docinfo,cut=cut)
  529:         docinfo = self.getAuthinfoFromIndexMeta(path,docinfo=docinfo,cut=cut)
  530:         return docinfo
  531:     
  532:     
  533:     def getDocinfo(self, mode, url):
  534:         """returns docinfo depending on mode"""
  535:         logger("documentViewer (getdocinfo)", logging.INFO,"mode: %s, url: %s"%(mode,url))
  536:         # look for cached docinfo in session
  537:         if self.REQUEST.SESSION.has_key('docinfo'):
  538:             docinfo = self.REQUEST.SESSION['docinfo']
  539:             # check if its still current
  540:             if docinfo is not None and docinfo.get('mode') == mode and docinfo.get('url') == url:
  541:                 logger("documentViewer (getdocinfo)", logging.INFO,"docinfo in session: %s"%docinfo)
  542:                 return docinfo
  543:         # new docinfo
  544:         docinfo = {'mode': mode, 'url': url}
  545:         if mode=="texttool": #index.meta with texttool information
  546:             docinfo = self.getDocinfoFromTextTool(url, docinfo=docinfo)
  547:         elif mode=="imagepath":
  548:             docinfo = self.getDocinfoFromImagePath(url, docinfo=docinfo)
  549:         elif mode=="filepath":
  550:             docinfo = self.getDocinfoFromImagePath(url, docinfo=docinfo,cut=2)
  551:         else:
  552:             logger("documentViewer (getdocinfo)", logging.ERROR,"unknown mode!")
  553:             raise ValueError("Unknown mode %s"%(mode))
  554:                         
  555:         logger("documentViewer (getdocinfo)", logging.INFO,"docinfo: %s"%docinfo)
  556:         self.REQUEST.SESSION['docinfo'] = docinfo
  557:         return docinfo
  558:         
  559:         
  560:     def getPageinfo(self, current, start=None, rows=None, cols=None, docinfo=None):
  561:         """returns pageinfo with the given parameters"""
  562:         pageinfo = {}
  563:         current = getInt(current)
  564:         pageinfo['current'] = current
  565:         rows = int(rows or self.thumbrows)
  566:         pageinfo['rows'] = rows
  567:         cols = int(cols or self.thumbcols)
  568:         pageinfo['cols'] = cols
  569:         grpsize = cols * rows
  570:         pageinfo['groupsize'] = grpsize
  571:         start = getInt(start, default=(math.ceil(float(current)/float(grpsize))*grpsize-(grpsize-1)))
  572:         # int(current / grpsize) * grpsize +1))
  573:         pageinfo['start'] = start
  574:         pageinfo['end'] = start + grpsize
  575:         if docinfo is not None:
  576:             np = int(docinfo['numPages'])
  577:             pageinfo['end'] = min(pageinfo['end'], np)
  578:             pageinfo['numgroups'] = int(np / grpsize)
  579:             if np % grpsize > 0:
  580:                 pageinfo['numgroups'] += 1
  581:                 
  582:         return pageinfo
  583:                 
  584:     def text(self,mode,url,pn):
  585:         """give text"""
  586:         if mode=="texttool": #index.meta with texttool information
  587:             (viewerUrl,imagepath,textpath)=parseUrlTextTool(url)
  588:         
  589:         #print textpath
  590:         try:
  591:             dom = NonvalidatingReader.parseUri(textpath)
  592:         except:
  593:             return None
  594:     
  595:         list=[]
  596:         nodes=dom.xpath("//pb")
  597: 
  598:         node=nodes[int(pn)-1]
  599:         
  600:         p=node
  601:         
  602:         while p.tagName!="p":
  603:             p=p.parentNode
  604:         
  605:         
  606:         endNode=nodes[int(pn)]
  607:         
  608:         
  609:         e=endNode
  610:         
  611:         while e.tagName!="p":
  612:             e=e.parentNode
  613:         
  614:         
  615:         next=node.parentNode
  616:         
  617:         #sammle s
  618:         while next and (next!=endNode.parentNode):
  619:             list.append(next)    
  620:             next=next.nextSibling    
  621:         list.append(endNode.parentNode)
  622:         
  623:         if p==e:# beide im selben paragraphen
  624:             pass
  625: #    else:
  626: #            next=p
  627: #            while next!=e:
  628: #                print next,e
  629: #                list.append(next)
  630: #                next=next.nextSibling
  631: #            
  632: #        for x in list:
  633: #            PrettyPrint(x)
  634: #
  635: #        return list
  636: #
  637: 
  638:     def findDigilibUrl(self):
  639:         """try to get the digilib URL from zogilib"""
  640:         url = self.imageViewerUrl[:-1] + "/getScalerUrl"
  641:         #print urlparse.urlparse(url)[0]
  642:         #print urlparse.urljoin(self.absolute_url(),url)
  643:         logging.info("finddigiliburl: %s"%urlparse.urlparse(url)[0])
  644:         logging.info("finddigiliburl: %s"%urlparse.urljoin(self.absolute_url(),url))
  645:         
  646:         try:
  647:             if urlparse.urlparse(url)[0]=='': #relative path
  648:                 url=urlparse.urljoin(self.absolute_url()+"/",url)
  649:                 
  650:             scaler = urlopen(url).read()
  651:             return scaler.replace("/servlet/Scaler?", "")
  652:         except:
  653:             return None
  654:     
  655:     def changeDocumentViewer(self,imageViewerUrl,textViewerUrl,title="",digilibBaseUrl=None,thumbrows=2,thumbcols=10,authgroups='mpiwg',RESPONSE=None):
  656:         """init document viewer"""
  657:         self.title=title
  658:         self.imageViewerUrl=imageViewerUrl
  659:         self.textViewerUrl=textViewerUrl
  660:         self.digilibBaseUrl = digilibBaseUrl
  661:         self.thumbrows = thumbrows
  662:         self.thumbcols = thumbcols
  663:         self.authgroups = [s.strip().lower() for s in authgroups.split(',')]
  664:         if RESPONSE is not None:
  665:             RESPONSE.redirect('manage_main')
  666:     
  667:     
  668:         
  669:         
  670: #    security.declareProtected('View management screens','renameImageForm')
  671: 
  672: def manage_AddDocumentViewerForm(self):
  673:     """add the viewer form"""
  674:     pt=PageTemplateFile('zpt/addDocumentViewer', globals()).__of__(self)
  675:     return pt()
  676:   
  677: def manage_AddDocumentViewer(self,id,imageViewerUrl="",textViewerUrl="",title="",RESPONSE=None):
  678:     """add the viewer"""
  679:     newObj=documentViewer(id,imageViewerUrl,title=title,textViewerUrl=textViewerUrl)
  680:     self._setObject(id,newObj)
  681:     
  682:     if RESPONSE is not None:
  683:         RESPONSE.redirect('manage_main')
  684: 
  685: 
  686: ##
  687: ## DocumentViewerTemplate class
  688: ##
  689: class DocumentViewerTemplate(ZopePageTemplate):
  690:     """Template for document viewer"""
  691:     meta_type="DocumentViewer Template"
  692: 
  693: 
  694: def manage_addDocumentViewerTemplateForm(self):
  695:     """Form for adding"""
  696:     pt=PageTemplateFile('zpt/addDocumentViewerTemplate', globals()).__of__(self)
  697:     return pt()
  698: 
  699: def manage_addDocumentViewerTemplate(self, id='viewer_main', title=None, text=None,
  700:                            REQUEST=None, submit=None):
  701:     "Add a Page Template with optional file content."
  702: 
  703:     self._setObject(id, DocumentViewerTemplate(id))
  704:     ob = getattr(self, id)
  705:     txt=file(os.path.join(package_home(globals()),'zpt/viewer_main.zpt'),'r').read()
  706:     logging.info("txt %s:"%txt)
  707:     ob.pt_edit(txt,"text/html")
  708:     if title:
  709:         ob.pt_setTitle(title)
  710:     try:
  711:         u = self.DestinationURL()
  712:     except AttributeError:
  713:         u = REQUEST['URL1']
  714:         
  715:     u = "%s/%s" % (u, urllib.quote(id))
  716:     REQUEST.RESPONSE.redirect(u+'/manage_main')
  717:     return ''
  718: 
  719: 
  720:     

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