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