from OFS.Folder import Folder from Products.PageTemplates.ZopePageTemplate import ZopePageTemplate from Products.PageTemplates.PageTemplateFile import PageTemplateFile from AccessControl import ClassSecurityInfo from AccessControl import getSecurityManager from Globals import package_home from Ft.Xml.Domlette import NonvalidatingReader from Ft.Xml.Domlette import PrettyPrint, Print from Ft.Xml import EMPTY_NAMESPACE import Ft.Xml.XPath import os.path import sys import cgi import urllib import zLOG def getInt(number, default=0): """returns always an int (0 in case of problems)""" try: return int(number) except: return default def getTextFromNode(nodename): if nodename is None: return "" nodelist=nodename.childNodes rc = "" for node in nodelist: if node.nodeType == node.TEXT_NODE: rc = rc + node.data return rc def getParentDir(path): """returns pathname shortened by one""" return '/'.join(path.split('/')[0:-1]) import socket def urlopen(url,timeout=2): """urlopen mit timeout""" socket.setdefaulttimeout(timeout) ret=urllib.urlopen(url) socket.setdefaulttimeout(5) return ret ## ## documentViewer class ## class documentViewer(Folder): """document viewer""" meta_type="Document viewer" security=ClassSecurityInfo() manage_options=Folder.manage_options+( {'label':'main config','action':'changeDocumentViewerForm'}, ) # templates and forms viewer_main = PageTemplateFile('zpt/viewer_main', globals()) thumbs_main = PageTemplateFile('zpt/thumbs_main', globals()) image_main = PageTemplateFile('zpt/image_main', globals()) head_main = PageTemplateFile('zpt/head_main', globals()) docuviewer_css = PageTemplateFile('css/docuviewer.css', globals()) security.declareProtected('View management screens','changeDocumentViewerForm') changeDocumentViewerForm = PageTemplateFile('zpt/changeDocumentViewer', globals()) def __init__(self,id,imageViewerUrl,title="",digilibBaseUrl=None,thumbcols=2,thumbrows=10,authgroups="mpiwg"): """init document viewer""" self.id=id self.title=title self.imageViewerUrl=imageViewerUrl if not digilibBaseUrl: self.digilibBaseUrl = self.findDigilibUrl() else: self.digilibBaseUrl = digilibBaseUrl self.thumbcols = thumbcols self.thumbrows = thumbrows # authgroups is list of authorized groups (delimited by ,) self.authgroups = [s.strip().lower() for s in authgroups.split(',')] # add template folder so we can always use template.something self.manage_addFolder('template') security.declareProtected('View','index_html') def index_html(self,mode,url,start=None,pn=1): ''' view it @param mode: defines which type of document is behind url @param url: url which contains display information ''' zLOG.LOG("documentViewer (index)", zLOG.INFO, "mode: %s url:%s start:%s pn:%s"%(mode,url,start,pn)) if not hasattr(self, 'template'): # create template folder if it doesn't exist self.manage_addFolder('template') if not self.digilibBaseUrl: self.digilibBaseUrl = self.findDigilibUrl() or "http://nausikaa.mpiwg-berlin.mpg.de/digitallibrary" docinfo = self.getDocinfo(mode=mode,url=url) pageinfo = self.getPageinfo(start=start,current=pn,docinfo=docinfo) pt = getattr(self.template, 'viewer_main') return pt(docinfo=docinfo,pageinfo=pageinfo) def getLink(self,param=None,val=None): """link to documentviewer with parameter param set to val""" params=self.REQUEST.form.copy() if param is not None: if val is None: if params.has_key(param): del params[param] else: params[param] = str(val) # quote values and assemble into query string ps = "&".join(["%s=%s"%(k,urllib.quote(v)) for (k, v) in params.items()]) url=self.REQUEST['URL1']+"?"+ps return url def getStyle(self, idx, selected, style=""): """returns a string with the given style and append 'sel' if path == selected.""" #zLOG.LOG("documentViewer (getstyle)", zLOG.INFO, "idx: %s selected: %s style: %s"%(idx,selected,style)) if idx == selected: return style + 'sel' else: return style def isAccessible(self, docinfo): """returns if access to the resource is granted""" access = docinfo.get('accessType', None) if access is None: # no information - no access #TODO: check return True elif access == 'free': return True elif access in self.authgroups: # only local access -- only logged in users user = getSecurityManager().getUser() if user is not None: #print "user: ", user return (user.getUserName() != "Anonymous User") else: return False zLOG.LOG("documentViewer (accessOK)", zLOG.INFO, "unknown access type %s"%access) return False def getDirinfoFromDigilib(self,path,docinfo=None): """gibt param von dlInfo aus""" if docinfo is None: docinfo = {} imageUrl=self.digilibBaseUrl+"/dirInfo-xml.jsp?mo=dir&fn="+path zLOG.LOG("documentViewer (getparamfromdigilib)", zLOG.INFO, "dirInfo from %s"%(imageUrl)) for cnt in (1,2,3): try: dom = NonvalidatingReader.parseUri(imageUrl) break except: zLOG.LOG("documentViewer (getdirinfofromdigilib)", zLOG.ERROR, "error reading %s (try %d)"%(imageUrl,cnt)) else: raise IOError("Unable to get dir-info from %s"%(imageUrl)) sizes=dom.xpath("//dir/size") zLOG.LOG("documentViewer (getparamfromdigilib)", zLOG.INFO, "dirInfo:size"%sizes) if sizes: docinfo['numPages'] = int(getTextFromNode(sizes[0])) else: docinfo['numPages'] = 0 return docinfo def getIndexMeta(self, url): """returns dom of index.meta document at url""" num_retries = 3 dom = None metaUrl = None if url.startswith("http://"): # real URL metaUrl = url try: dom = NonvalidatingReader.parseUri(url) except: zLOG.LOG("documentViewer (getIndexMata)", zLOG.INFO,"%s (%s)"%sys.exc_info()[0:2]) raise IOError("Unable to read index.meta from %s"%(url)) else: # online path server=self.digilibBaseUrl+"/servlet/Texter?fn=" metaUrl=server+url if not metaUrl.endswith("index.meta"): metaUrl += "/index.meta" for n in range(num_retries): try: dom = NonvalidatingReader.parseUri(metaUrl) zLOG.LOG("documentViewer (getIndexMata)", zLOG.INFO,metaUrl) break except: zLOG.LOG("ERROR documentViewer (getIndexMata)", zLOG.INFO,"%s (%s)"%sys.exc_info()[0:2]) if dom is None: raise IOError("Unable to read index meta from %s"%(url)) return dom def getAuthinfoFromIndexMeta(self,path,docinfo=None,dom=None): """gets authorization info from the index.meta file at path or given by dom""" zLOG.LOG("documentViewer (getauthinfofromindexmeta)", zLOG.INFO,"path: %s"%(path)) access = None if docinfo is None: docinfo = {} if dom is None: dom = self.getIndexMeta(getParentDir(path)) acctype = dom.xpath("//access-conditions/access/@type") if acctype and (len(acctype)>0): access=acctype[0].value if access in ['group', 'institution']: access = getTextFromNode(dom.xpath("//access-conditions/access/name")[0]).lower() docinfo['accessType'] = access return docinfo def getBibinfoFromIndexMeta(self,path,docinfo=None,dom=None): """gets bibliographical info from the index.meta file at path or given by dom""" zLOG.LOG("documentViewer (getbibinfofromindexmeta)", zLOG.INFO,"path: %s"%(path)) if docinfo is None: docinfo = {} if dom is None: dom = self.getIndexMeta(getParentDir(path)) metaData=self.metadata.main.meta.bib bibtype=dom.xpath("//bib/@type") if bibtype and (len(bibtype)>0): bibtype=bibtype[0].value else: bibtype="generic" bibtype=bibtype.replace("-"," ") # wrong typesiin index meta "-" instead of " " (not wrong! ROC) bibmap=metaData.generateMappingForType(bibtype) #print "bibmap: ", bibmap, " for: ", bibtype # if there is no mapping bibmap is empty (mapping sometimes has empty fields) if len(bibmap) > 0 and len(bibmap['author'][0]) > 0: docinfo['author']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['author'][0])[0]) docinfo['title']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['title'][0])[0]) docinfo['year']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['year'][0])[0]) return docinfo def getDocinfoFromTextTool(self,url,dom=None,docinfo=None): """parse texttool tag in index meta""" zLOG.LOG("documentViewer (getdocinfofromtexttool)", zLOG.INFO,"url: %s"%(url)) if docinfo is None: docinfo = {} if dom is None: dom = self.getIndexMeta(url) archiveNames=dom.xpath("//resource/name") if archiveNames and (len(archiveNames)>0): archiveName=getTextFromNode(archiveNames[0]) archivePaths=dom.xpath("//resource/archive-path") if archivePaths and (len(archivePaths)>0): archivePath=getTextFromNode(archivePaths[0]) # clean up archive path if archivePath[0] != '/': archivePath = '/' + archivePath if not archivePath.endswith(archiveName): archivePath += "/" + archiveName else: archivePath=None imageDirs=dom.xpath("//texttool/image") if imageDirs and (len(imageDirs)>0): imageDir=getTextFromNode(imageDirs[0]) else: # we balk with no image tag raise IOError("No text-tool info in %s"%(url)) if imageDir and archivePath: #print "image: ", imageDir, " archivepath: ", archivePath imageDir=os.path.join(archivePath,imageDir) imageDir=imageDir.replace("/mpiwg/online",'') docinfo=self.getDirinfoFromDigilib(imageDir,docinfo=docinfo) docinfo['imagePath'] = imageDir docinfo['imageURL'] = self.digilibBaseUrl+"/servlet/Scaler?fn="+imageDir viewerUrls=dom.xpath("//texttool/digiliburlprefix") if viewerUrls and (len(viewerUrls)>0): viewerUrl=getTextFromNode(viewerUrls[0]) docinfo['viewerURL'] = viewerUrl textUrls=dom.xpath("//texttool/text") if textUrls and (len(textUrls)>0): textUrl=getTextFromNode(textUrls[0]) docinfo['textURL'] = textUrl docinfo = self.getBibinfoFromIndexMeta(url,docinfo=docinfo,dom=dom) docinfo = self.getAuthinfoFromIndexMeta(url,docinfo=docinfo,dom=dom) return docinfo def getDocinfoFromImagePath(self,path,docinfo=None): """path ist the path to the images it assumes that the index.meta file is one level higher.""" zLOG.LOG("documentViewer (getdocinfofromimagepath)", zLOG.INFO,"path: %s"%(path)) if docinfo is None: docinfo = {} path=path.replace("/mpiwg/online","") docinfo['imagePath'] = path docinfo=self.getDirinfoFromDigilib(path,docinfo=docinfo) imageUrl=self.digilibBaseUrl+"/servlet/Scaler?fn="+path docinfo['imageURL'] = imageUrl docinfo = self.getBibinfoFromIndexMeta(path,docinfo=docinfo) docinfo = self.getAuthinfoFromIndexMeta(path,docinfo=docinfo) return docinfo def getDocinfo(self, mode, url): """returns docinfo depending on mode""" zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"mode: %s, url: %s"%(mode,url)) # look for cached docinfo in session if self.REQUEST.SESSION.has_key('docinfo'): docinfo = self.REQUEST.SESSION['docinfo'] # check if its still current if docinfo is not None and docinfo.get('mode') == mode and docinfo.get('url') == url: zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"docinfo in session: %s"%docinfo) return docinfo # new docinfo docinfo = {'mode': mode, 'url': url} if mode=="texttool": #index.meta with texttool information docinfo = self.getDocinfoFromTextTool(url, docinfo=docinfo) elif mode=="imagepath": docinfo = self.getDocinfoFromImagePath(url, docinfo=docinfo) else: zLOG.LOG("documentViewer (getdocinfo)", zLOG.ERROR,"unknown mode!") raise ValueError("Unknown mode %s"%(mode)) zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"docinfo: %s"%docinfo) self.REQUEST.SESSION['docinfo'] = docinfo return docinfo def getPageinfo(self, current, start=None, rows=None, cols=None, docinfo=None): """returns pageinfo with the given parameters""" pageinfo = {} current = getInt(current) pageinfo['current'] = current rows = int(rows or self.thumbrows) pageinfo['rows'] = rows cols = int(cols or self.thumbcols) pageinfo['cols'] = cols grpsize = cols * rows pageinfo['groupsize'] = grpsize start = getInt(start, default=(int(current / grpsize) * grpsize +1)) pageinfo['start'] = start pageinfo['end'] = start + grpsize if docinfo is not None: np = int(docinfo['numPages']) pageinfo['end'] = min(pageinfo['end'], np) pageinfo['numgroups'] = int(np / grpsize) if np % grpsize > 0: pageinfo['numgroups'] += 1 return pageinfo def text(self,mode,url,pn): """give text""" if mode=="texttool": #index.meta with texttool information (viewerUrl,imagepath,textpath)=parseUrlTextTool(url) #print textpath try: dom = NonvalidatingReader.parseUri(textpath) except: return None list=[] nodes=dom.xpath("//pb") node=nodes[int(pn)-1] p=node while p.tagName!="p": p=p.parentNode endNode=nodes[int(pn)] e=endNode while e.tagName!="p": e=e.parentNode next=node.parentNode #sammle s while next and (next!=endNode.parentNode): list.append(next) next=next.nextSibling list.append(endNode.parentNode) if p==e:# beide im selben paragraphen pass # else: # next=p # while next!=e: # print next,e # list.append(next) # next=next.nextSibling # # for x in list: # PrettyPrint(x) # # return list # def findDigilibUrl(self): """try to get the digilib URL from zogilib""" url = self.imageViewerUrl[:-1] + "/getScalerUrl" try: scaler = urlopen(url).read() return scaler.replace("/servlet/Scaler?", "") except: return None def changeDocumentViewer(self,imageViewerUrl,title="",digilibBaseUrl=None,thumbrows=2,thumbcols=10,authgroups='mpiwg',RESPONSE=None): """init document viewer""" self.title=title self.imageViewerUrl=imageViewerUrl self.digilibBaseUrl = digilibBaseUrl self.thumbrows = thumbrows self.thumbcols = thumbcols self.authgroups = [s.strip().lower() for s in authgroups.split(',')] if RESPONSE is not None: RESPONSE.redirect('manage_main') # security.declareProtected('View management screens','renameImageForm') def manage_AddDocumentViewerForm(self): """add the viewer form""" pt=PageTemplateFile('zpt/addDocumentViewer', globals()).__of__(self) return pt() def manage_AddDocumentViewer(self,id,imageViewerUrl="",title="",RESPONSE=None): """add the viewer""" newObj=documentViewer(id,imageViewerUrl,title) self._setObject(id,newObj) if RESPONSE is not None: RESPONSE.redirect('manage_main') ## ## DocumentViewerTemplate class ## class DocumentViewerTemplate(ZopePageTemplate): """Template for document viewer""" meta_type="DocumentViewer Template" def manage_addDocumentViewerTemplateForm(self): """Form for adding""" pt=PageTemplateFile('zpt/addDocumentViewerTemplate', globals()).__of__(self) return pt() def manage_addDocumentViewerTemplate(self, id='viewer_main', title=None, text=None, REQUEST=None, submit=None): "Add a Page Template with optional file content." self._setObject(id, DocumentViewerTemplate(id)) ob = getattr(self, id) ob.pt_edit(open(os.path.join(package_home(globals()),'zpt/viewer_main.zpt')).read(),None) if title: ob.pt_setTitle(title) try: u = self.DestinationURL() except AttributeError: u = REQUEST['URL1'] u = "%s/%s" % (u, urllib.quote(id)) REQUEST.RESPONSE.redirect(u+'/manage_main') return ''