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