Annotation of documentViewer/documentViewer.py, revision 1.10
1.1 dwinter 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
1.8 casties 5: from AccessControl import getSecurityManager
1.1 dwinter 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
1.7 casties 15: import sys
1.1 dwinter 16: import cgi
17: import urllib
1.3 casties 18: import zLOG
1.1 dwinter 19:
1.4 casties 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:
1.1 dwinter 27: def getTextFromNode(nodename):
1.8 casties 28: if nodename is None:
29: return ""
1.1 dwinter 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:
1.9 casties 37:
38: def getParentDir(path):
39: """returns pathname shortened by one"""
40: return '/'.join(path.split('/')[0:-1])
41:
42:
1.1 dwinter 43: import socket
44:
1.8 casties 45: def urlopen(url,timeout=2):
1.1 dwinter 46: """urlopen mit timeout"""
1.8 casties 47: socket.setdefaulttimeout(timeout)
1.1 dwinter 48: ret=urllib.urlopen(url)
49: socket.setdefaulttimeout(5)
50: return ret
51:
52:
1.3 casties 53: ##
54: ## documentViewer class
55: ##
56: class documentViewer(Folder):
1.1 dwinter 57: """document viewer"""
58:
59: meta_type="Document viewer"
60:
61: security=ClassSecurityInfo()
1.3 casties 62: manage_options=Folder.manage_options+(
1.1 dwinter 63: {'label':'main config','action':'changeDocumentViewerForm'},
64: )
65:
1.3 casties 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:
1.1 dwinter 76:
1.8 casties 77: def __init__(self,id,imageViewerUrl,title="",digilibBaseUrl=None,thumbcols=2,thumbrows=10,authgroups="mpiwg"):
1.1 dwinter 78: """init document viewer"""
79: self.id=id
80: self.title=title
81: self.imageViewerUrl=imageViewerUrl
1.4 casties 82: if not digilibBaseUrl:
1.3 casties 83: self.digilibBaseUrl = self.findDigilibUrl()
1.4 casties 84: else:
85: self.digilibBaseUrl = digilibBaseUrl
86: self.thumbcols = thumbcols
87: self.thumbrows = thumbrows
1.8 casties 88: # authgroups is list of authorized groups (delimited by ,)
89: self.authgroups = [s.strip().lower() for s in authgroups.split(',')]
1.3 casties 90: # add template folder so we can always use template.something
91: self.manage_addFolder('template')
92:
93:
94: security.declareProtected('View','index_html')
1.4 casties 95: def index_html(self,mode,url,start=None,pn=1):
1.3 casties 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))
1.1 dwinter 103:
1.3 casties 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:
1.4 casties 111: docinfo = self.getDocinfo(mode=mode,url=url)
112: pageinfo = self.getPageinfo(start=start,current=pn,docinfo=docinfo)
1.3 casties 113: pt = getattr(self.template, 'viewer_main')
114: return pt(docinfo=docinfo,pageinfo=pageinfo)
1.1 dwinter 115:
116:
1.4 casties 117: def getLink(self,param=None,val=None):
118: """link to documentviewer with parameter param set to val"""
1.9 casties 119: params=self.REQUEST.form.copy()
1.4 casties 120: if param is not None:
1.7 casties 121: if val is None:
122: if params.has_key(param):
123: del params[param]
1.4 casties 124: else:
1.9 casties 125: params[param] = str(val)
1.7 casties 126:
1.9 casties 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
1.4 casties 130: return url
131:
132:
1.3 casties 133: def getStyle(self, idx, selected, style=""):
1.4 casties 134: """returns a string with the given style and append 'sel' if path == selected."""
1.3 casties 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:
1.9 casties 139: return style
140:
1.2 dwinter 141:
1.9 casties 142: def isAccessible(self, docinfo):
1.8 casties 143: """returns if access to the resource is granted"""
144: access = docinfo.get('accessType', None)
145: if access is None:
1.9 casties 146: # no information - no access
147: #TODO: check
1.8 casties 148: return True
149: elif access == 'free':
150: return True
1.9 casties 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
1.8 casties 159:
1.9 casties 160: zLOG.LOG("documentViewer (accessOK)", zLOG.INFO, "unknown access type %s"%access)
1.8 casties 161: return False
1.9 casties 162:
1.8 casties 163:
1.7 casties 164: def getDirinfoFromDigilib(self,path,docinfo=None):
1.6 casties 165: """gibt param von dlInfo aus"""
1.7 casties 166: if docinfo is None:
167: docinfo = {}
168:
1.6 casties 169: imageUrl=self.digilibBaseUrl+"/dirInfo-xml.jsp?mo=dir&fn="+path
170:
1.7 casties 171: zLOG.LOG("documentViewer (getparamfromdigilib)", zLOG.INFO, "dirInfo from %s"%(imageUrl))
1.6 casties 172:
1.9 casties 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:
1.10 ! casties 180: raise IOError("Unable to get dir-info from %s"%(imageUrl))
1.6 casties 181:
1.10 ! casties 182: sizes=dom.xpath("//dir/size")
! 183: zLOG.LOG("documentViewer (getparamfromdigilib)", zLOG.INFO, "dirInfo:size"%sizes)
1.6 casties 184:
1.10 ! casties 185: if sizes:
! 186: docinfo['numPages'] = int(getTextFromNode(sizes[0]))
1.7 casties 187: else:
188: docinfo['numPages'] = 0
189:
190: return docinfo
1.8 casties 191:
1.6 casties 192:
1.9 casties 193: def getIndexMeta(self, url):
194: """returns dom of index.meta document at url"""
195: dom = None
196: if url.startswith("http://"):
197: # real URL
198: try:
199: dom = NonvalidatingReader.parseUri(url)
200: except:
201: zLOG.LOG("documentViewer (getIndexMata)", zLOG.INFO,"%s (%s)"%sys.exc_info()[0:2])
1.10 ! casties 202: raise IOError("Unable to read index.meta from %s"%(url))
1.9 casties 203: else:
204: # online path
205: server=self.digilibBaseUrl+"/servlet/Texter?fn="
206: metaUrl=server+url
207: if not metaUrl.endswith("index.meta"):
208: metaUrl += "/index.meta"
209: try:
210: dom = NonvalidatingReader.parseUri(metaUrl)
211: except:
212: zLOG.LOG("documentViewer (getIndexMata)", zLOG.INFO,"%s (%s)"%sys.exc_info()[0:2])
1.10 ! casties 213: raise IOError("Unable to read index meta from %s"%(url))
1.9 casties 214:
215: return dom
216:
217:
1.8 casties 218: def getAuthinfoFromIndexMeta(self,path,docinfo=None,dom=None):
1.9 casties 219: """gets authorization info from the index.meta file at path or given by dom"""
1.10 ! casties 220: zLOG.LOG("documentViewer (getauthinfofromindexmeta)", zLOG.INFO,"path: %s"%(path))
1.8 casties 221:
222: access = None
223:
224: if docinfo is None:
225: docinfo = {}
226:
227: if dom is None:
1.9 casties 228: dom = self.getIndexMeta(getParentDir(path))
1.8 casties 229:
230: acctype = dom.xpath("//access-conditions/access/@type")
231: if acctype and (len(acctype)>0):
232: access=acctype[0].value
1.9 casties 233: if access in ['group', 'institution']:
1.8 casties 234: access = getTextFromNode(dom.xpath("//access-conditions/access/name")[0]).lower()
235:
236: docinfo['accessType'] = access
237: return docinfo
1.6 casties 238:
1.8 casties 239:
1.3 casties 240: def getBibinfoFromIndexMeta(self,path,docinfo=None,dom=None):
1.9 casties 241: """gets bibliographical info from the index.meta file at path or given by dom"""
1.3 casties 242: zLOG.LOG("documentViewer (getbibinfofromindexmeta)", zLOG.INFO,"path: %s"%(path))
1.2 dwinter 243:
1.3 casties 244: if docinfo is None:
245: docinfo = {}
246:
247: if dom is None:
1.9 casties 248: dom = self.getIndexMeta(getParentDir(path))
249:
1.4 casties 250: metaData=self.metadata.main.meta.bib
251: bibtype=dom.xpath("//bib/@type")
252: if bibtype and (len(bibtype)>0):
253: bibtype=bibtype[0].value
1.2 dwinter 254: else:
1.4 casties 255: bibtype="generic"
256: bibtype=bibtype.replace("-"," ") # wrong typesiin index meta "-" instead of " " (not wrong! ROC)
257: bibmap=metaData.generateMappingForType(bibtype)
1.9 casties 258: #print "bibmap: ", bibmap, " for: ", bibtype
1.8 casties 259: # if there is no mapping bibmap is empty (mapping sometimes has empty fields)
1.7 casties 260: if len(bibmap) > 0 and len(bibmap['author'][0]) > 0:
1.4 casties 261: docinfo['author']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['author'][0])[0])
262: docinfo['title']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['title'][0])[0])
263: docinfo['year']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['year'][0])[0])
1.3 casties 264:
265: return docinfo
266:
267:
1.8 casties 268: def getDocinfoFromTextTool(self,url,dom=None,docinfo=None):
1.3 casties 269: """parse texttool tag in index meta"""
270: zLOG.LOG("documentViewer (getdocinfofromtexttool)", zLOG.INFO,"url: %s"%(url))
271: if docinfo is None:
272: docinfo = {}
273:
1.8 casties 274: if dom is None:
1.9 casties 275: dom = self.getIndexMeta(url)
1.8 casties 276:
277: archiveNames=dom.xpath("//resource/name")
278: if archiveNames and (len(archiveNames)>0):
279: archiveName=getTextFromNode(archiveNames[0])
1.3 casties 280:
281: archivePaths=dom.xpath("//resource/archive-path")
282: if archivePaths and (len(archivePaths)>0):
283: archivePath=getTextFromNode(archivePaths[0])
1.8 casties 284: # clean up archive path
285: if archivePath[0] != '/':
286: archivePath = '/' + archivePath
287: if not archivePath.endswith(archiveName):
288: archivePath += "/" + archiveName
1.3 casties 289: else:
290: archivePath=None
291:
1.9 casties 292: imageDirs=dom.xpath("//texttool/image")
293: if imageDirs and (len(imageDirs)>0):
294: imageDir=getTextFromNode(imageDirs[0])
1.3 casties 295: else:
1.10 ! casties 296: # we balk with no image tag
! 297: raise IOError("No text-tool info in %s"%(url))
1.3 casties 298:
1.9 casties 299: if imageDir and archivePath:
300: #print "image: ", imageDir, " archivepath: ", archivePath
301: imageDir=os.path.join(archivePath,imageDir)
302: imageDir=imageDir.replace("/mpiwg/online",'')
303: docinfo=self.getDirinfoFromDigilib(imageDir,docinfo=docinfo)
304: docinfo['imagePath'] = imageDir
305: docinfo['imageURL'] = self.digilibBaseUrl+"/servlet/Scaler?fn="+imageDir
1.3 casties 306:
307: viewerUrls=dom.xpath("//texttool/digiliburlprefix")
308: if viewerUrls and (len(viewerUrls)>0):
309: viewerUrl=getTextFromNode(viewerUrls[0])
1.7 casties 310: docinfo['viewerURL'] = viewerUrl
1.3 casties 311:
312: textUrls=dom.xpath("//texttool/text")
313: if textUrls and (len(textUrls)>0):
314: textUrl=getTextFromNode(textUrls[0])
1.7 casties 315: docinfo['textURL'] = textUrl
1.3 casties 316:
317: docinfo = self.getBibinfoFromIndexMeta(url,docinfo=docinfo,dom=dom)
1.8 casties 318: docinfo = self.getAuthinfoFromIndexMeta(url,docinfo=docinfo,dom=dom)
1.3 casties 319: return docinfo
320:
321:
322: def getDocinfoFromImagePath(self,path,docinfo=None):
323: """path ist the path to the images it assumes that the index.meta file is one level higher."""
324: zLOG.LOG("documentViewer (getdocinfofromimagepath)", zLOG.INFO,"path: %s"%(path))
325: if docinfo is None:
326: docinfo = {}
1.6 casties 327: path=path.replace("/mpiwg/online","")
1.3 casties 328: docinfo['imagePath'] = path
1.7 casties 329: docinfo=self.getDirinfoFromDigilib(path,docinfo=docinfo)
330: imageUrl=self.digilibBaseUrl+"/servlet/Scaler?fn="+path
1.3 casties 331: docinfo['imageURL'] = imageUrl
332:
333: docinfo = self.getBibinfoFromIndexMeta(path,docinfo=docinfo)
1.8 casties 334: docinfo = self.getAuthinfoFromIndexMeta(path,docinfo=docinfo)
1.3 casties 335: return docinfo
336:
1.2 dwinter 337:
1.3 casties 338: def getDocinfo(self, mode, url):
339: """returns docinfo depending on mode"""
340: zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"mode: %s, url: %s"%(mode,url))
341: # look for cached docinfo in session
342: if self.REQUEST.SESSION.has_key('docinfo'):
343: docinfo = self.REQUEST.SESSION['docinfo']
344: # check if its still current
345: if docinfo is not None and docinfo.get('mode') == mode and docinfo.get('url') == url:
346: zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"docinfo in session: %s"%docinfo)
347: return docinfo
348: # new docinfo
349: docinfo = {'mode': mode, 'url': url}
350: if mode=="texttool": #index.meta with texttool information
351: docinfo = self.getDocinfoFromTextTool(url, docinfo=docinfo)
352: elif mode=="imagepath":
353: docinfo = self.getDocinfoFromImagePath(url, docinfo=docinfo)
354: else:
355: zLOG.LOG("documentViewer (getdocinfo)", zLOG.ERROR,"unknown mode!")
1.10 ! casties 356: raise ValueError("Unknown mode %s"%(mode))
! 357:
1.3 casties 358: zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"docinfo: %s"%docinfo)
359: self.REQUEST.SESSION['docinfo'] = docinfo
360: return docinfo
1.2 dwinter 361:
362:
1.4 casties 363: def getPageinfo(self, current, start=None, rows=None, cols=None, docinfo=None):
1.3 casties 364: """returns pageinfo with the given parameters"""
365: pageinfo = {}
1.4 casties 366: current = getInt(current)
367: pageinfo['current'] = current
368: rows = int(rows or self.thumbrows)
369: pageinfo['rows'] = rows
370: cols = int(cols or self.thumbcols)
371: pageinfo['cols'] = cols
372: grpsize = cols * rows
373: pageinfo['groupsize'] = grpsize
374: start = getInt(start, default=(int(current / grpsize) * grpsize +1))
1.3 casties 375: pageinfo['start'] = start
1.4 casties 376: pageinfo['end'] = start + grpsize
377: if docinfo is not None:
378: np = int(docinfo['numPages'])
379: pageinfo['end'] = min(pageinfo['end'], np)
380: pageinfo['numgroups'] = int(np / grpsize)
381: if np % grpsize > 0:
382: pageinfo['numgroups'] += 1
383:
1.3 casties 384: return pageinfo
385:
1.1 dwinter 386: def text(self,mode,url,pn):
387: """give text"""
388: if mode=="texttool": #index.meta with texttool information
389: (viewerUrl,imagepath,textpath)=parseUrlTextTool(url)
390:
1.9 casties 391: #print textpath
1.1 dwinter 392: try:
393: dom = NonvalidatingReader.parseUri(textpath)
394: except:
395: return None
396:
397: list=[]
398: nodes=dom.xpath("//pb")
399:
400: node=nodes[int(pn)-1]
401:
402: p=node
403:
404: while p.tagName!="p":
405: p=p.parentNode
406:
407:
408: endNode=nodes[int(pn)]
409:
410:
411: e=endNode
412:
413: while e.tagName!="p":
414: e=e.parentNode
415:
416:
417: next=node.parentNode
418:
419: #sammle s
420: while next and (next!=endNode.parentNode):
421: list.append(next)
422: next=next.nextSibling
423: list.append(endNode.parentNode)
424:
425: if p==e:# beide im selben paragraphen
1.2 dwinter 426: pass
427: # else:
428: # next=p
429: # while next!=e:
430: # print next,e
431: # list.append(next)
432: # next=next.nextSibling
433: #
434: # for x in list:
435: # PrettyPrint(x)
436: #
437: # return list
1.3 casties 438: #
439:
440: def findDigilibUrl(self):
441: """try to get the digilib URL from zogilib"""
442: url = self.imageViewerUrl[:-1] + "/getScalerUrl"
443: try:
444: scaler = urlopen(url).read()
445: return scaler.replace("/servlet/Scaler?", "")
446: except:
447: return None
448:
1.8 casties 449: def changeDocumentViewer(self,imageViewerUrl,title="",digilibBaseUrl=None,thumbrows=2,thumbcols=10,authgroups='mpiwg',RESPONSE=None):
1.3 casties 450: """init document viewer"""
451: self.title=title
452: self.imageViewerUrl=imageViewerUrl
453: self.digilibBaseUrl = digilibBaseUrl
1.4 casties 454: self.thumbrows = thumbrows
455: self.thumbcols = thumbcols
1.8 casties 456: self.authgroups = [s.strip().lower() for s in authgroups.split(',')]
1.3 casties 457: if RESPONSE is not None:
458: RESPONSE.redirect('manage_main')
1.1 dwinter 459:
460:
461:
462:
463: # security.declareProtected('View management screens','renameImageForm')
464:
465: def manage_AddDocumentViewerForm(self):
466: """add the viewer form"""
1.3 casties 467: pt=PageTemplateFile('zpt/addDocumentViewer', globals()).__of__(self)
1.1 dwinter 468: return pt()
469:
470: def manage_AddDocumentViewer(self,id,imageViewerUrl="",title="",RESPONSE=None):
471: """add the viewer"""
472: newObj=documentViewer(id,imageViewerUrl,title)
473: self._setObject(id,newObj)
474:
475: if RESPONSE is not None:
476: RESPONSE.redirect('manage_main')
1.3 casties 477:
478:
479: ##
480: ## DocumentViewerTemplate class
481: ##
482: class DocumentViewerTemplate(ZopePageTemplate):
483: """Template for document viewer"""
484: meta_type="DocumentViewer Template"
485:
486:
487: def manage_addDocumentViewerTemplateForm(self):
488: """Form for adding"""
489: pt=PageTemplateFile('zpt/addDocumentViewerTemplate', globals()).__of__(self)
490: return pt()
491:
492: def manage_addDocumentViewerTemplate(self, id='viewer_main', title=None, text=None,
493: REQUEST=None, submit=None):
494: "Add a Page Template with optional file content."
495:
496: self._setObject(id, DocumentViewerTemplate(id))
497: ob = getattr(self, id)
498: ob.pt_edit(open(os.path.join(package_home(globals()),'zpt/viewer_main.zpt')).read(),None)
499: if title:
500: ob.pt_setTitle(title)
501: try:
502: u = self.DestinationURL()
503: except AttributeError:
504: u = REQUEST['URL1']
505:
506: u = "%s/%s" % (u, urllib.quote(id))
507: REQUEST.RESPONSE.redirect(u+'/manage_main')
508: return ''
509:
510:
1.1 dwinter 511:
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