Annotation of documentViewer/documentViewer.py, revision 1.8
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:
27:
1.1 dwinter 28: def getTextFromNode(nodename):
1.8 ! casties 29: if nodename is None:
! 30: return ""
1.1 dwinter 31: nodelist=nodename.childNodes
32: rc = ""
33: for node in nodelist:
34: if node.nodeType == node.TEXT_NODE:
35: rc = rc + node.data
36: return rc
37:
38: import socket
39:
1.8 ! casties 40: def urlopen(url,timeout=2):
1.1 dwinter 41: """urlopen mit timeout"""
1.8 ! casties 42: socket.setdefaulttimeout(timeout)
1.1 dwinter 43: ret=urllib.urlopen(url)
44: socket.setdefaulttimeout(5)
45: return ret
46:
47:
1.3 casties 48: ##
49: ## documentViewer class
50: ##
51: class documentViewer(Folder):
1.1 dwinter 52: """document viewer"""
53:
54: meta_type="Document viewer"
55:
56: security=ClassSecurityInfo()
1.3 casties 57: manage_options=Folder.manage_options+(
1.1 dwinter 58: {'label':'main config','action':'changeDocumentViewerForm'},
59: )
60:
1.3 casties 61: # templates and forms
62: viewer_main = PageTemplateFile('zpt/viewer_main', globals())
63: thumbs_main = PageTemplateFile('zpt/thumbs_main', globals())
64: image_main = PageTemplateFile('zpt/image_main', globals())
65: head_main = PageTemplateFile('zpt/head_main', globals())
66: docuviewer_css = PageTemplateFile('css/docuviewer.css', globals())
67:
68: security.declareProtected('View management screens','changeDocumentViewerForm')
69: changeDocumentViewerForm = PageTemplateFile('zpt/changeDocumentViewer', globals())
70:
1.1 dwinter 71:
1.8 ! casties 72: def __init__(self,id,imageViewerUrl,title="",digilibBaseUrl=None,thumbcols=2,thumbrows=10,authgroups="mpiwg"):
1.1 dwinter 73: """init document viewer"""
74: self.id=id
75: self.title=title
76: self.imageViewerUrl=imageViewerUrl
1.4 casties 77: if not digilibBaseUrl:
1.3 casties 78: self.digilibBaseUrl = self.findDigilibUrl()
1.4 casties 79: else:
80: self.digilibBaseUrl = digilibBaseUrl
81: self.thumbcols = thumbcols
82: self.thumbrows = thumbrows
1.8 ! casties 83: # authgroups is list of authorized groups (delimited by ,)
! 84: self.authgroups = [s.strip().lower() for s in authgroups.split(',')]
1.3 casties 85: # add template folder so we can always use template.something
86: self.manage_addFolder('template')
87:
88:
89: security.declareProtected('View','index_html')
1.4 casties 90: def index_html(self,mode,url,start=None,pn=1):
1.3 casties 91: '''
92: view it
93: @param mode: defines which type of document is behind url
94: @param url: url which contains display information
95: '''
96:
97: zLOG.LOG("documentViewer (index)", zLOG.INFO, "mode: %s url:%s start:%s pn:%s"%(mode,url,start,pn))
1.1 dwinter 98:
1.3 casties 99: if not hasattr(self, 'template'):
100: # create template folder if it doesn't exist
101: self.manage_addFolder('template')
102:
103: if not self.digilibBaseUrl:
104: self.digilibBaseUrl = self.findDigilibUrl() or "http://nausikaa.mpiwg-berlin.mpg.de/digitallibrary"
105:
1.4 casties 106: docinfo = self.getDocinfo(mode=mode,url=url)
107: pageinfo = self.getPageinfo(start=start,current=pn,docinfo=docinfo)
1.3 casties 108: pt = getattr(self.template, 'viewer_main')
109: return pt(docinfo=docinfo,pageinfo=pageinfo)
1.1 dwinter 110:
111:
1.4 casties 112: def getLink(self,param=None,val=None):
113: """link to documentviewer with parameter param set to val"""
114: params=cgi.parse_qs(self.REQUEST['QUERY_STRING'])
115: if param is not None:
1.7 casties 116: if val is None:
117: if params.has_key(param):
118: del params[param]
1.4 casties 119: else:
1.7 casties 120: params[param] = [str(val)]
121:
122: ps = "&".join(["%s=%s"%(k,urllib.quote(v[0])) for (k, v) in params.items()])
123: url=self.REQUEST['URL']+"?"+ps
124: #url=self.REQUEST['URL']+"?"+urllib.urlencode(params, doseq=True)
1.4 casties 125: return url
126:
127:
1.3 casties 128: def getStyle(self, idx, selected, style=""):
1.4 casties 129: """returns a string with the given style and append 'sel' if path == selected."""
1.3 casties 130: #zLOG.LOG("documentViewer (getstyle)", zLOG.INFO, "idx: %s selected: %s style: %s"%(idx,selected,style))
131: if idx == selected:
132: return style + 'sel'
133: else:
134: return style
1.2 dwinter 135:
1.8 ! casties 136: def accessOK(self, docinfo):
! 137: """returns if access to the resource is granted"""
! 138: access = docinfo.get('accessType', None)
! 139: if access is None:
! 140: # no information - no access (not yet)
! 141: return True
! 142: elif access == 'free':
! 143: return True
! 144:
! 145: print "access: ", access, " authgroups: ", self.authgroups
! 146: if access in self.authgroups:
! 147: # local access OK
! 148: user = getSecurityManager().getUser().getUserName()
! 149: print "user: ", user
! 150: return (user != "Anonymous User")
! 151:
! 152: zLOG.LOG("documentViewer (accessOK)", zLOG.INFO, "unknown access group %s"%access)
! 153: return False
! 154:
1.2 dwinter 155:
1.7 casties 156: def getDirinfoFromDigilib(self,path,docinfo=None):
1.6 casties 157: """gibt param von dlInfo aus"""
1.7 casties 158: if docinfo is None:
159: docinfo = {}
160:
1.6 casties 161: imageUrl=self.digilibBaseUrl+"/dirInfo-xml.jsp?mo=dir&fn="+path
162:
1.7 casties 163: zLOG.LOG("documentViewer (getparamfromdigilib)", zLOG.INFO, "dirInfo from %s"%(imageUrl))
1.6 casties 164:
165: try:
166: dom = NonvalidatingReader.parseUri(imageUrl)
167: except:
1.7 casties 168: zLOG.LOG("documentViewer (getparamfromdigilib)", zLOG.ERROR, "error reading %s"%(imageUrl))
169: raise IOError("Unable to get dirinfo from %s"%(imageUrl))
1.6 casties 170:
1.7 casties 171: params=dom.xpath("//dir/size")
172: zLOG.LOG("documentViewer (getparamfromdigilib)", zLOG.INFO, "dirInfo:size"%params)
1.6 casties 173:
174: if params:
1.8 ! casties 175: docinfo['numPages'] = int(getTextFromNode(params[0]))
1.7 casties 176: else:
177: docinfo['numPages'] = 0
178:
179: return docinfo
1.8 ! casties 180:
1.6 casties 181:
1.8 ! casties 182: def getAuthinfoFromIndexMeta(self,path,docinfo=None,dom=None):
! 183: """gets authorization info from the index.meta file at url or given by dom"""
! 184: zLOG.LOG("documentViewer (getbibinfofromindexmeta)", zLOG.INFO,"path: %s"%(path))
! 185:
! 186: access = None
! 187:
! 188: if docinfo is None:
! 189: docinfo = {}
! 190:
! 191: if dom is None:
! 192: server=self.digilibBaseUrl+"/servlet/Texter?fn="
! 193: path="/".join(path.split("/")[0:-1])
! 194: metaUrl=server+path+"/index.meta"
! 195: try:
! 196: dom = NonvalidatingReader.parseUri(metaUrl)
! 197: except:
! 198: return docinfo
! 199:
! 200: acctype = dom.xpath("//access-conditions/access/@type")
! 201: if acctype and (len(acctype)>0):
! 202: access=acctype[0].value
! 203: if access == 'group':
! 204: access = getTextFromNode(dom.xpath("//access-conditions/access/name")[0]).lower()
! 205:
! 206: docinfo['accessType'] = access
! 207: return docinfo
1.6 casties 208:
1.8 ! casties 209:
1.3 casties 210: def getBibinfoFromIndexMeta(self,path,docinfo=None,dom=None):
211: """gets bibliographical info from the index.meta file at url or given by dom"""
212: zLOG.LOG("documentViewer (getbibinfofromindexmeta)", zLOG.INFO,"path: %s"%(path))
1.2 dwinter 213:
1.3 casties 214: if docinfo is None:
215: docinfo = {}
216:
217: if dom is None:
1.7 casties 218: server=self.digilibBaseUrl+"/servlet/Texter?fn="
1.3 casties 219: path="/".join(path.split("/")[0:-1])
220: metaUrl=server+path+"/index.meta"
221: try:
222: dom = NonvalidatingReader.parseUri(metaUrl)
223: except:
224: return docinfo
1.2 dwinter 225:
1.4 casties 226: metaData=self.metadata.main.meta.bib
227: bibtype=dom.xpath("//bib/@type")
228: if bibtype and (len(bibtype)>0):
229: bibtype=bibtype[0].value
1.2 dwinter 230: else:
1.4 casties 231: bibtype="generic"
232: bibtype=bibtype.replace("-"," ") # wrong typesiin index meta "-" instead of " " (not wrong! ROC)
233: bibmap=metaData.generateMappingForType(bibtype)
1.7 casties 234: print "bibmap: ", bibmap, " for: ", bibtype
1.8 ! casties 235: # if there is no mapping bibmap is empty (mapping sometimes has empty fields)
1.7 casties 236: if len(bibmap) > 0 and len(bibmap['author'][0]) > 0:
1.4 casties 237: docinfo['author']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['author'][0])[0])
238: docinfo['title']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['title'][0])[0])
239: docinfo['year']=getTextFromNode(dom.xpath("//bib/%s"%bibmap['year'][0])[0])
1.3 casties 240:
241: return docinfo
242:
243:
1.8 ! casties 244: def getDocinfoFromTextTool(self,url,dom=None,docinfo=None):
1.3 casties 245: """parse texttool tag in index meta"""
246: zLOG.LOG("documentViewer (getdocinfofromtexttool)", zLOG.INFO,"url: %s"%(url))
247: if docinfo is None:
248: docinfo = {}
249:
1.8 ! casties 250: if dom is None:
! 251: try:
! 252: dom = NonvalidatingReader.parseUri(url)
! 253: except:
! 254: zLOG.LOG("documentViewer (parseUrlTexttool)", zLOG.INFO,"%s (%s)"%sys.exc_info()[0:2])
! 255: raise IOError("Unable to get texttool info from %s"%(url))
! 256:
! 257: archiveNames=dom.xpath("//resource/name")
! 258: if archiveNames and (len(archiveNames)>0):
! 259: archiveName=getTextFromNode(archiveNames[0])
1.3 casties 260:
261: archivePaths=dom.xpath("//resource/archive-path")
262: if archivePaths and (len(archivePaths)>0):
263: archivePath=getTextFromNode(archivePaths[0])
1.8 ! casties 264: # clean up archive path
! 265: if archivePath[0] != '/':
! 266: archivePath = '/' + archivePath
! 267: if not archivePath.endswith(archiveName):
! 268: archivePath += "/" + archiveName
1.3 casties 269: else:
270: archivePath=None
271:
272: images=dom.xpath("//texttool/image")
273: if images and (len(images)>0):
274: image=getTextFromNode(images[0])
275: else:
276: image=None
277:
278: if image and archivePath:
1.8 ! casties 279: print "image: ", image, " archivepath: ", archivePath
1.3 casties 280: image=os.path.join(archivePath,image)
281: image=image.replace("/mpiwg/online",'')
1.7 casties 282: docinfo=self.getDirinfoFromDigilib(image,docinfo=docinfo)
1.3 casties 283: docinfo['imagePath'] = image
1.7 casties 284: docinfo['imageURL'] = self.digilibBaseUrl+"/servlet/Scaler?fn="+image
1.3 casties 285:
286: viewerUrls=dom.xpath("//texttool/digiliburlprefix")
287: if viewerUrls and (len(viewerUrls)>0):
288: viewerUrl=getTextFromNode(viewerUrls[0])
1.7 casties 289: docinfo['viewerURL'] = viewerUrl
1.3 casties 290:
291: textUrls=dom.xpath("//texttool/text")
292: if textUrls and (len(textUrls)>0):
293: textUrl=getTextFromNode(textUrls[0])
1.7 casties 294: docinfo['textURL'] = textUrl
1.3 casties 295:
296: docinfo = self.getBibinfoFromIndexMeta(url,docinfo=docinfo,dom=dom)
1.8 ! casties 297: docinfo = self.getAuthinfoFromIndexMeta(url,docinfo=docinfo,dom=dom)
1.3 casties 298: return docinfo
299:
300:
301: def getDocinfoFromImagePath(self,path,docinfo=None):
302: """path ist the path to the images it assumes that the index.meta file is one level higher."""
303: zLOG.LOG("documentViewer (getdocinfofromimagepath)", zLOG.INFO,"path: %s"%(path))
304: if docinfo is None:
305: docinfo = {}
1.6 casties 306: path=path.replace("/mpiwg/online","")
1.3 casties 307: docinfo['imagePath'] = path
1.7 casties 308: docinfo=self.getDirinfoFromDigilib(path,docinfo=docinfo)
309: imageUrl=self.digilibBaseUrl+"/servlet/Scaler?fn="+path
1.3 casties 310: docinfo['imageURL'] = imageUrl
311:
312: docinfo = self.getBibinfoFromIndexMeta(path,docinfo=docinfo)
1.8 ! casties 313: docinfo = self.getAuthinfoFromIndexMeta(path,docinfo=docinfo)
1.3 casties 314: return docinfo
315:
1.2 dwinter 316:
1.3 casties 317: def getDocinfo(self, mode, url):
318: """returns docinfo depending on mode"""
319: zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"mode: %s, url: %s"%(mode,url))
320: # look for cached docinfo in session
321: if self.REQUEST.SESSION.has_key('docinfo'):
322: docinfo = self.REQUEST.SESSION['docinfo']
323: # check if its still current
324: if docinfo is not None and docinfo.get('mode') == mode and docinfo.get('url') == url:
325: zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"docinfo in session: %s"%docinfo)
326: return docinfo
327: # new docinfo
328: docinfo = {'mode': mode, 'url': url}
329: if mode=="texttool": #index.meta with texttool information
330: docinfo = self.getDocinfoFromTextTool(url, docinfo=docinfo)
331: elif mode=="imagepath":
332: docinfo = self.getDocinfoFromImagePath(url, docinfo=docinfo)
333: else:
334: zLOG.LOG("documentViewer (getdocinfo)", zLOG.ERROR,"unknown mode!")
335: zLOG.LOG("documentViewer (getdocinfo)", zLOG.INFO,"docinfo: %s"%docinfo)
336: self.REQUEST.SESSION['docinfo'] = docinfo
337: return docinfo
1.2 dwinter 338:
339:
1.4 casties 340: def getPageinfo(self, current, start=None, rows=None, cols=None, docinfo=None):
1.3 casties 341: """returns pageinfo with the given parameters"""
342: pageinfo = {}
1.4 casties 343: current = getInt(current)
344: pageinfo['current'] = current
345: rows = int(rows or self.thumbrows)
346: pageinfo['rows'] = rows
347: cols = int(cols or self.thumbcols)
348: pageinfo['cols'] = cols
349: grpsize = cols * rows
350: pageinfo['groupsize'] = grpsize
351: start = getInt(start, default=(int(current / grpsize) * grpsize +1))
1.3 casties 352: pageinfo['start'] = start
1.4 casties 353: pageinfo['end'] = start + grpsize
354: if docinfo is not None:
355: np = int(docinfo['numPages'])
356: pageinfo['end'] = min(pageinfo['end'], np)
357: pageinfo['numgroups'] = int(np / grpsize)
358: if np % grpsize > 0:
359: pageinfo['numgroups'] += 1
360:
1.3 casties 361: return pageinfo
362:
1.1 dwinter 363: def text(self,mode,url,pn):
364: """give text"""
365: if mode=="texttool": #index.meta with texttool information
366: (viewerUrl,imagepath,textpath)=parseUrlTextTool(url)
367:
368: print textpath
369: try:
370: dom = NonvalidatingReader.parseUri(textpath)
371: except:
372: return None
373:
374: list=[]
375: nodes=dom.xpath("//pb")
376:
377: node=nodes[int(pn)-1]
378:
379: p=node
380:
381: while p.tagName!="p":
382: p=p.parentNode
383:
384:
385: endNode=nodes[int(pn)]
386:
387:
388: e=endNode
389:
390: while e.tagName!="p":
391: e=e.parentNode
392:
393:
394: next=node.parentNode
395:
396: #sammle s
397: while next and (next!=endNode.parentNode):
398: list.append(next)
399: next=next.nextSibling
400: list.append(endNode.parentNode)
401:
402: if p==e:# beide im selben paragraphen
1.2 dwinter 403: pass
404: # else:
405: # next=p
406: # while next!=e:
407: # print next,e
408: # list.append(next)
409: # next=next.nextSibling
410: #
411: # for x in list:
412: # PrettyPrint(x)
413: #
414: # return list
1.3 casties 415: #
416:
417: def findDigilibUrl(self):
418: """try to get the digilib URL from zogilib"""
419: url = self.imageViewerUrl[:-1] + "/getScalerUrl"
420: try:
421: scaler = urlopen(url).read()
422: return scaler.replace("/servlet/Scaler?", "")
423: except:
424: return None
425:
1.8 ! casties 426: def changeDocumentViewer(self,imageViewerUrl,title="",digilibBaseUrl=None,thumbrows=2,thumbcols=10,authgroups='mpiwg',RESPONSE=None):
1.3 casties 427: """init document viewer"""
428: self.title=title
429: self.imageViewerUrl=imageViewerUrl
430: self.digilibBaseUrl = digilibBaseUrl
1.4 casties 431: self.thumbrows = thumbrows
432: self.thumbcols = thumbcols
1.8 ! casties 433: self.authgroups = [s.strip().lower() for s in authgroups.split(',')]
1.3 casties 434: if RESPONSE is not None:
435: RESPONSE.redirect('manage_main')
1.1 dwinter 436:
437:
438:
439:
440: # security.declareProtected('View management screens','renameImageForm')
441:
442: def manage_AddDocumentViewerForm(self):
443: """add the viewer form"""
1.3 casties 444: pt=PageTemplateFile('zpt/addDocumentViewer', globals()).__of__(self)
1.1 dwinter 445: return pt()
446:
447: def manage_AddDocumentViewer(self,id,imageViewerUrl="",title="",RESPONSE=None):
448: """add the viewer"""
449: newObj=documentViewer(id,imageViewerUrl,title)
450: self._setObject(id,newObj)
451:
452: if RESPONSE is not None:
453: RESPONSE.redirect('manage_main')
1.3 casties 454:
455:
456: ##
457: ## DocumentViewerTemplate class
458: ##
459: class DocumentViewerTemplate(ZopePageTemplate):
460: """Template for document viewer"""
461: meta_type="DocumentViewer Template"
462:
463:
464: def manage_addDocumentViewerTemplateForm(self):
465: """Form for adding"""
466: pt=PageTemplateFile('zpt/addDocumentViewerTemplate', globals()).__of__(self)
467: return pt()
468:
469: def manage_addDocumentViewerTemplate(self, id='viewer_main', title=None, text=None,
470: REQUEST=None, submit=None):
471: "Add a Page Template with optional file content."
472:
473: self._setObject(id, DocumentViewerTemplate(id))
474: ob = getattr(self, id)
475: ob.pt_edit(open(os.path.join(package_home(globals()),'zpt/viewer_main.zpt')).read(),None)
476: if title:
477: ob.pt_setTitle(title)
478: try:
479: u = self.DestinationURL()
480: except AttributeError:
481: u = REQUEST['URL1']
482:
483: u = "%s/%s" % (u, urllib.quote(id))
484: REQUEST.RESPONSE.redirect(u+'/manage_main')
485: return ''
486:
487:
1.1 dwinter 488:
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