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