| 1 | from OFS.SimpleItem import SimpleItem |
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| 2 | from Products.PageTemplates.PageTemplateFile import PageTemplateFile |
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| 3 | |
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| 4 | import xml.etree.ElementTree as ET |
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| 5 | |
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| 6 | import re |
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| 7 | import logging |
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| 8 | import urllib |
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| 9 | import urlparse |
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| 10 | import base64 |
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| 11 | |
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| 12 | from HocrTxtUtils import getInt, getText, getHttpData |
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| 13 | |
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| 14 | def serialize(node): |
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| 15 | """returns a string containing an XML snippet of node""" |
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| 16 | s = ET.tostring(node, 'UTF-8') |
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| 17 | # snip off XML declaration |
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| 18 | if s.startswith('<?xml'): |
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| 19 | i = s.find('?>') |
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| 20 | return s[i+3:] |
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| 21 | |
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| 22 | return s |
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| 23 | |
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| 24 | |
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| 25 | class HocrTextServer(SimpleItem): |
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| 26 | """TextServer implementation for MPDL-XML eXist server""" |
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| 27 | meta_type="Hocr TextServer" |
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| 28 | |
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| 29 | manage_options=( |
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| 30 | {'label':'Config','action':'manage_changeHocrTextServerForm'}, |
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| 31 | )+SimpleItem.manage_options |
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| 32 | |
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| 33 | manage_changeHocrTextServerForm = PageTemplateFile("zpt/manage_changeHocrTextServer", globals()) |
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| 34 | |
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| 35 | def __init__(self,id,title="",serverUrl="http://localhost:8080/hocr", timeout=40, repositoryType='production'): |
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| 36 | """constructor""" |
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| 37 | self.id=id |
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| 38 | self.title=title |
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| 39 | self.timeout = timeout |
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| 40 | self.repositoryType = repositoryType |
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| 41 | |
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| 42 | self.serverUrl = serverUrl |
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| 43 | |
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| 44 | def getHttpData(self, url, data=None): |
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| 45 | """returns result from url+data HTTP request""" |
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| 46 | return getHttpData(url,data,timeout=self.timeout) |
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| 47 | |
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| 48 | def getServerData(self, pn, data=None): |
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| 49 | """returns result from text server for method+data""" |
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| 50 | url = self.serverUrl |
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| 51 | return getHttpData(url,pn,data=data,timeout=self.timeout) |
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| 52 | |
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| 53 | |
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| 54 | def getRepositoryType(self): |
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| 55 | """returns the repository type, e.g. 'production'""" |
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| 56 | return getattr(self, 'repositoryType', None) |
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| 57 | |
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| 58 | def getTextDownloadUrl(self, type='xml', docinfo=None): |
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| 59 | """returns a URL to download the current text""" |
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| 60 | docpath = docinfo.get('textURLPath', None) |
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| 61 | if not docpath: |
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| 62 | return None |
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| 63 | |
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| 64 | docpath = docpath.replace('.xml','.'+type) |
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| 65 | url = '%sgetDoc?doc=%s'%(self.serverUrl.replace('interface/',''), docpath) |
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| 66 | return url |
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| 67 | |
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| 68 | |
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| 69 | def getPlacesOnPage(self, docinfo=None, pn=None): |
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| 70 | """Returns list of GIS places of page pn""" |
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| 71 | docpath = docinfo.get('textURLPath',None) |
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| 72 | if not docpath: |
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| 73 | return None |
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| 74 | |
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| 75 | places=[] |
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| 76 | text=self.getServerData("xpath.xql", "document=%s&xpath=//place&pn=%s"%(docpath,pn)) |
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| 77 | dom = ET.fromstring(text) |
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| 78 | result = dom.findall(".//resultPage/place") |
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| 79 | for l in result: |
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| 80 | id = l.get("id") |
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| 81 | name = l.text |
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| 82 | place = {'id': id, 'name': name} |
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| 83 | places.append(place) |
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| 84 | |
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| 85 | return places |
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| 86 | |
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| 87 | |
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| 88 | def getTextInfo(self, mode='', docinfo=None): |
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| 89 | """reads document info, including page concordance, from text server""" |
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| 90 | logging.debug("getTextInfo mode=%s"%mode) |
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| 91 | if mode not in ['toc', 'figures', '']: |
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| 92 | mode = '' |
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| 93 | # check cached info |
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| 94 | if mode: |
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| 95 | # cached toc-request? |
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| 96 | if 'full_%s'%mode in docinfo: |
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| 97 | return docinfo |
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| 98 | |
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| 99 | else: |
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| 100 | # no toc-request |
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| 101 | if 'numTextPages' in docinfo: |
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| 102 | return docinfo |
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| 103 | |
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| 104 | docpath = docinfo.get('textURLPath', None) |
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| 105 | if docpath is None: |
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| 106 | logging.error("getTextInfo: no textURLPath!") |
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| 107 | return docinfo |
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| 108 | |
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| 109 | try: |
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| 110 | # we need to set a result set size |
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| 111 | pagesize = 10000 |
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| 112 | pn = 1 |
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| 113 | # fetch docinfo |
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| 114 | pagexml = self.getServerData("doc-info.xql","document=%s&info=%s&pageSize=%s&pn=%s"%(docpath,mode,pagesize,pn)) |
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| 115 | dom = ET.fromstring(pagexml) |
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| 116 | # all info in tag <document> |
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| 117 | doc = dom.find("document") |
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| 118 | except Exception, e: |
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| 119 | logging.error("getTextInfo: Error reading doc info: %s"%e) |
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| 120 | return docinfo |
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| 121 | |
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| 122 | if doc is None: |
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| 123 | logging.error("getTextInfo: unable to find document-tag!") |
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| 124 | else: |
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| 125 | # go through all child elements |
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| 126 | for tag in doc: |
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| 127 | name = tag.tag |
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| 128 | # numTextPages |
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| 129 | if name == 'countPages': |
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| 130 | np = getInt(tag.text) |
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| 131 | if np > 0: |
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| 132 | docinfo['numTextPages'] = np |
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| 133 | |
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| 134 | # numFigureEntries |
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| 135 | elif name == 'countFigureEntries': |
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| 136 | docinfo['numFigureEntries'] = getInt(tag.text) |
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| 137 | |
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| 138 | # numTocEntries |
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| 139 | elif name == 'countTocEntries': |
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| 140 | # WTF: s1 = int(s)/30+1 |
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| 141 | docinfo['numTocEntries'] = getInt(tag.text) |
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| 142 | |
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| 143 | # numPlaces |
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| 144 | elif name == 'countPlaces': |
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| 145 | docinfo['numPlaces'] = getInt(tag.text) |
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| 146 | |
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| 147 | # pageNumbers |
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| 148 | elif name == 'pageNumbers': |
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| 149 | # contains tags with page numbers |
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| 150 | # <pn><n>4</n><no>4</no><non/></pn> |
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| 151 | # n=scan number, no=original page no, non=normalized original page no |
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| 152 | # pageNumbers is a dict indexed by scan number |
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| 153 | pages = {} |
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| 154 | for pn in tag: |
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| 155 | page = {} |
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| 156 | n = 0 |
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| 157 | for p in pn: |
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| 158 | if p.tag == 'n': |
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| 159 | n = getInt(p.text) |
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| 160 | page['pn'] = n |
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| 161 | elif p.tag == 'no': |
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| 162 | page['no'] = p.text |
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| 163 | elif p.tag == 'non': |
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| 164 | page['non'] = p.text |
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| 165 | |
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| 166 | if n > 0: |
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| 167 | pages[n] = page |
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| 168 | |
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| 169 | docinfo['pageNumbers'] = pages |
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| 170 | #logging.debug("got pageNumbers=%s"%repr(pages)) |
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| 171 | |
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| 172 | # toc |
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| 173 | elif name == 'toc': |
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| 174 | # contains tags with table of contents/figures |
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| 175 | # <toc-entry><page>13</page><level>3</level><content>Chapter I</content><level-string>1.</level-string><real-level>1</real-level></toc-entry> |
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| 176 | tocs = [] |
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| 177 | for te in tag: |
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| 178 | toc = {} |
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| 179 | for t in te: |
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| 180 | if t.tag == 'page': |
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| 181 | toc['pn'] = getInt(t.text) |
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| 182 | elif t.tag == 'level': |
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| 183 | toc['level'] = t.text |
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| 184 | elif t.tag == 'content': |
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| 185 | toc['content'] = t.text |
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| 186 | elif t.tag == 'level-string': |
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| 187 | toc['level-string'] = t.text |
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| 188 | elif t.tag == 'real-level': |
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| 189 | toc['real-level'] = t.text |
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| 190 | |
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| 191 | tocs.append(toc) |
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| 192 | |
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| 193 | # save as full_toc/full_figures |
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| 194 | docinfo['full_%s'%mode] = tocs |
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| 195 | |
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| 196 | return docinfo |
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| 197 | |
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| 198 | |
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| 199 | def processPageInfo(self, dom, docinfo, pageinfo): |
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| 200 | """processes page info divs from dom and stores in docinfo and pageinfo""" |
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| 201 | # assume first second level div is pageMeta |
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| 202 | alldivs = dom.find("div") |
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| 203 | |
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| 204 | if alldivs is None or alldivs.get('class', '') != 'pageMeta': |
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| 205 | logging.error("processPageInfo: pageMeta div not found!") |
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| 206 | return |
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| 207 | |
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| 208 | for div in alldivs: |
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| 209 | dc = div.get('class') |
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| 210 | |
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| 211 | # pageNumberOrig |
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| 212 | if dc == 'pageNumberOrig': |
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| 213 | pageinfo['pageNumberOrig'] = div.text |
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| 214 | |
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| 215 | # pageNumberOrigNorm |
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| 216 | elif dc == 'pageNumberOrigNorm': |
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| 217 | pageinfo['pageNumberOrigNorm'] = div.text |
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| 218 | |
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| 219 | # pageHeaderTitle |
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| 220 | elif dc == 'pageHeaderTitle': |
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| 221 | pageinfo['pageHeaderTitle'] = div.text |
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| 222 | |
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| 223 | #logging.debug("processPageInfo: pageinfo=%s"%repr(pageinfo)) |
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| 224 | return |
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| 225 | |
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| 226 | |
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| 227 | def getTextPage(self, mode="text", pn=1, docinfo=None, pageinfo=None): |
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| 228 | """returns single page from fulltext""" |
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| 229 | |
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| 230 | |
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| 231 | logging.debug("getTextPage Hocr mode=%s, pn=%s"%(mode,pn)) |
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| 232 | # check for cached text -- but ideally this shouldn't be called twice |
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| 233 | if pageinfo.has_key('textPage'): |
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| 234 | logging.debug("getTextPage: using cached text") |
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| 235 | return pageinfo['textPage'] |
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| 236 | |
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| 237 | docpath = docinfo.get('textURLPath', None) |
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| 238 | |
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| 239 | docpath=docpath.replace("pages","hocr") |
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| 240 | |
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| 241 | logging.debug("getTextPage docpath= %s"%docpath) |
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| 242 | if not docpath: |
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| 243 | return None |
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| 244 | |
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| 245 | # stuff for constructing full urls |
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| 246 | selfurl = docinfo['viewerUrl'] |
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| 247 | textParams = {'document': docpath, |
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| 248 | 'pn': pn} |
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| 249 | if 'characterNormalization' in pageinfo: |
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| 250 | textParams['characterNormalization'] = pageinfo['characterNormalization'] |
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| 251 | |
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| 252 | if not mode: |
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| 253 | # default is dict |
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| 254 | mode = 'text' |
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| 255 | |
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| 256 | logging.debug("getTextPage mode=%s, pn=%s"%(mode,pn)) |
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| 257 | modes = mode.split(',') |
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| 258 | # check for multiple layers |
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| 259 | if len(modes) > 1: |
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| 260 | logging.debug("getTextPage: more than one mode=%s"%mode) |
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| 261 | |
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| 262 | # search mode |
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| 263 | if 'search' in modes: |
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| 264 | # add highlighting |
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| 265 | highlightQuery = pageinfo.get('highlightQuery', None) |
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| 266 | if highlightQuery: |
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| 267 | textParams['highlightQuery'] = highlightQuery |
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| 268 | textParams['highlightElement'] = pageinfo.get('highlightElement', '') |
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| 269 | textParams['highlightElementPos'] = pageinfo.get('highlightElementPos', '') |
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| 270 | |
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| 271 | # ignore mode in the following |
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| 272 | modes.remove('search') |
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| 273 | |
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| 274 | # pundit mode |
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| 275 | punditMode = False |
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| 276 | if 'pundit' in modes: |
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| 277 | punditMode = True |
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| 278 | # ignore mode in the following |
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| 279 | modes.remove('pundit') |
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| 280 | |
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| 281 | # other modes don't combine |
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| 282 | if 'dict' in modes: |
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| 283 | # dict is called textPollux in the backend |
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| 284 | textmode = 'textPollux' |
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| 285 | elif 'xml' in modes: |
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| 286 | # xml mode |
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| 287 | textmode = 'xml' |
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| 288 | textParams['characterNormalization'] = 'orig' |
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| 289 | elif 'gis' in modes: |
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| 290 | textmode = 'gis' |
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| 291 | else: |
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| 292 | # text is default mode |
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| 293 | textmode = 'text' |
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| 294 | |
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| 295 | textParams['mode'] = textmode |
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| 296 | |
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| 297 | logging.debug("getTextPage (textparams: %s"%textParams) |
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| 298 | |
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| 299 | try: |
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| 300 | # fetch the page |
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| 301 | pagexml = self.getServerData(pn,urllib.urlencode(textParams)) |
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| 302 | return pagexml |
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| 303 | except Exception, e: |
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| 304 | logging.error("getTextPage: Error reading page: %s"%e) |
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| 305 | return None |
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| 306 | |
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| 307 | |
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| 308 | |
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| 309 | return None |
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| 310 | |
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| 311 | def addPunditAttributes(self, pagediv, pageinfo, docinfo): |
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| 312 | """add about attributes for pundit annotation tool""" |
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| 313 | textid = docinfo.get('DRI', "fn=%s"%docinfo.get('documentPath', '???')) |
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| 314 | pn = pageinfo.get('pn', '1') |
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| 315 | # TODO: use pn as well? |
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| 316 | # check all div-tags |
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| 317 | divs = pagediv.findall(".//div") |
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| 318 | for d in divs: |
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| 319 | id = d.get('id') |
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| 320 | if id: |
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| 321 | d.set('about', "http://echo.mpiwg-berlin.mpg.de/%s/pn=%s/#%s"%(textid,pn,id)) |
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| 322 | cls = d.get('class','') |
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| 323 | cls += ' pundit-content' |
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| 324 | d.set('class', cls.strip()) |
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| 325 | |
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| 326 | return pagediv |
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| 327 | |
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| 328 | def getSearchResults(self, mode, query=None, pageinfo=None, docinfo=None): |
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| 329 | """loads list of search results and stores XML in docinfo""" |
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| 330 | |
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| 331 | logging.debug("getSearchResults mode=%s query=%s"%(mode, query)) |
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| 332 | if mode == "none": |
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| 333 | return docinfo |
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| 334 | |
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| 335 | cachedQuery = docinfo.get('cachedQuery', None) |
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| 336 | if cachedQuery is not None: |
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| 337 | # cached search result |
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| 338 | if cachedQuery == '%s_%s'%(mode,query): |
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| 339 | # same query |
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| 340 | return docinfo |
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| 341 | |
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| 342 | else: |
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| 343 | # different query |
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| 344 | del docinfo['resultSize'] |
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| 345 | del docinfo['resultXML'] |
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| 346 | |
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| 347 | # cache query |
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| 348 | docinfo['cachedQuery'] = '%s_%s'%(mode,query) |
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| 349 | |
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| 350 | # fetch full results |
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| 351 | docpath = docinfo['textURLPath'] |
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| 352 | params = {'document': docpath, |
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| 353 | 'mode': 'text', |
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| 354 | 'queryType': mode, |
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| 355 | 'query': query, |
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| 356 | 'queryResultPageSize': 1000, |
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| 357 | 'queryResultPN': 1, |
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| 358 | 'characterNormalization': pageinfo.get('characterNormalization', 'reg')} |
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| 359 | pagexml = self.getServerData("doc-query.xql",urllib.urlencode(params)) |
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| 360 | #pagexml = self.getServerData("doc-query.xql","document=%s&mode=%s&queryType=%s&query=%s&queryResultPageSize=%s&queryResultPN=%s&s=%s&viewMode=%s&characterNormalization=%s&highlightElementPos=%s&highlightElement=%s&highlightQuery=%s"%(docpath, 'text', queryType, urllib.quote(query), pagesize, pn, s, viewMode,characterNormalization, highlightElementPos, highlightElement, urllib.quote(highlightQuery))) |
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| 361 | dom = ET.fromstring(pagexml) |
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| 362 | # page content is in <div class="queryResultPage"> |
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| 363 | pagediv = None |
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| 364 | # ElementTree 1.2 in Python 2.6 can't do div[@class='queryResultPage'] |
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| 365 | alldivs = dom.findall("div") |
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| 366 | for div in alldivs: |
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| 367 | dc = div.get('class') |
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| 368 | # page content div |
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| 369 | if dc == 'queryResultPage': |
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| 370 | pagediv = div |
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| 371 | |
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| 372 | elif dc == 'queryResultHits': |
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| 373 | docinfo['resultSize'] = getInt(div.text) |
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| 374 | |
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| 375 | if pagediv is not None: |
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| 376 | # store XML in docinfo |
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| 377 | docinfo['resultXML'] = ET.tostring(pagediv, 'UTF-8') |
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| 378 | |
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| 379 | return docinfo |
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| 380 | |
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| 381 | |
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| 382 | def getResultsPage(self, mode="text", query=None, pn=None, start=None, size=None, pageinfo=None, docinfo=None): |
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| 383 | """returns single page from the table of contents""" |
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| 384 | logging.debug("getResultsPage mode=%s, pn=%s"%(mode,pn)) |
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| 385 | # get (cached) result |
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| 386 | self.getSearchResults(mode=mode, query=query, pageinfo=pageinfo, docinfo=docinfo) |
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| 387 | |
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| 388 | resultxml = docinfo.get('resultXML', None) |
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| 389 | if not resultxml: |
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| 390 | logging.error("getResultPage: unable to find resultXML") |
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| 391 | return "Error: no result!" |
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| 392 | |
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| 393 | if size is None: |
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| 394 | size = pageinfo.get('resultPageSize', 10) |
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| 395 | |
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| 396 | if start is None: |
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| 397 | start = (pn - 1) * size |
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| 398 | |
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| 399 | fullresult = ET.fromstring(resultxml) |
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| 400 | |
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| 401 | if fullresult is not None: |
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| 402 | # paginate |
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| 403 | first = start-1 |
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| 404 | len = size |
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| 405 | del fullresult[:first] |
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| 406 | del fullresult[len:] |
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| 407 | tocdivs = fullresult |
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| 408 | |
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| 409 | # check all a-tags |
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| 410 | links = tocdivs.findall(".//a") |
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| 411 | for l in links: |
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| 412 | href = l.get('href') |
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| 413 | if href: |
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| 414 | # assume all links go to pages |
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| 415 | linkUrl = urlparse.urlparse(href) |
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| 416 | linkParams = urlparse.parse_qs(linkUrl.query) |
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| 417 | # take some parameters |
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| 418 | params = {'pn': linkParams['pn'], |
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| 419 | 'highlightQuery': linkParams.get('highlightQuery',''), |
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| 420 | 'highlightElement': linkParams.get('highlightElement',''), |
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| 421 | 'highlightElementPos': linkParams.get('highlightElementPos','') |
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| 422 | } |
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| 423 | url = self.getLink(params=params) |
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| 424 | l.set('href', url) |
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| 425 | |
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| 426 | return serialize(tocdivs) |
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| 427 | |
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| 428 | return "ERROR: no results!" |
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| 429 | |
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| 430 | |
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| 431 | def getToc(self, mode='text', docinfo=None): |
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| 432 | """returns list of table of contents from docinfo""" |
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| 433 | logging.debug("getToc mode=%s"%mode) |
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| 434 | if mode == 'text': |
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| 435 | queryType = 'toc' |
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| 436 | else: |
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| 437 | queryType = mode |
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| 438 | |
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| 439 | if not 'full_%s'%queryType in docinfo: |
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| 440 | # get new toc |
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| 441 | docinfo = self.getTextInfo(queryType, docinfo) |
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| 442 | |
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| 443 | return docinfo.get('full_%s'%queryType, []) |
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| 444 | |
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| 445 | def getTocPage(self, mode='text', pn=None, start=None, size=None, pageinfo=None, docinfo=None): |
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| 446 | """returns single page from the table of contents""" |
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| 447 | logging.debug("getTocPage mode=%s, pn=%s start=%s size=%s"%(mode,repr(pn),repr(start),repr(size))) |
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| 448 | fulltoc = self.getToc(mode=mode, docinfo=docinfo) |
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| 449 | if len(fulltoc) < 1: |
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| 450 | logging.error("getTocPage: unable to find toc!") |
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| 451 | return "Error: no table of contents!" |
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| 452 | |
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| 453 | if size is None: |
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| 454 | size = pageinfo.get('tocPageSize', 30) |
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| 455 | |
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| 456 | if start is None: |
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| 457 | start = (pn - 1) * size |
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| 458 | |
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| 459 | # paginate |
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| 460 | first = (start - 1) |
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| 461 | last = first + size |
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| 462 | tocs = fulltoc[first:last] |
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| 463 | tp = '<div>' |
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| 464 | for toc in tocs: |
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| 465 | pageurl = self.getLink('pn', toc['pn']) |
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| 466 | tp += '<div class="tocline">' |
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| 467 | tp += '<div class="toc name">[%s %s]</div>'%(toc['level-string'], toc['content']) |
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| 468 | tp += '<div class="toc float right page"><a href="%s">Page: %s</a></div>'%(pageurl, toc['pn']) |
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| 469 | tp += '</div>\n' |
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| 470 | |
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| 471 | tp += '</div>\n' |
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| 472 | |
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| 473 | return tp |
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| 474 | |
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| 475 | |
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| 476 | def manage_changeHocrTextServer(self,title="",serverUrl="http://mpdl-text.mpiwg-berlin.mpg.de/mpdl/interface/",timeout=40,repositoryType=None,RESPONSE=None): |
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| 477 | """change settings""" |
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| 478 | self.title=title |
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| 479 | self.timeout = timeout |
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| 480 | self.serverUrl = serverUrl |
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| 481 | if repositoryType: |
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| 482 | self.repositoryType = repositoryType |
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| 483 | if RESPONSE is not None: |
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| 484 | RESPONSE.redirect('manage_main') |
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| 485 | |
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| 486 | # management methods |
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| 487 | def manage_addHocrTextServerForm(self): |
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| 488 | """Form for adding""" |
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| 489 | pt = PageTemplateFile("zpt/manage_addHocrTextServer", globals()).__of__(self) |
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| 490 | return pt() |
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| 491 | |
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| 492 | def manage_addHocrTextServer(self,id,title="",serverUrl="http://mpdl-text.mpiwg-berlin.mpg.de/mpdl/interface/",timeout=40,RESPONSE=None): |
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| 493 | #def manage_addHocrTextServer(self,id,title="",serverUrl="http://mpdl-text.mpiwg-berlin.mpg.de:30030/mpdl/interface/",timeout=40,RESPONSE=None): |
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| 494 | """add zogiimage""" |
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| 495 | newObj = HocrTextServer(id,title,serverUrl,timeout) |
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| 496 | self.Destination()._setObject(id, newObj) |
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| 497 | if RESPONSE is not None: |
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| 498 | RESPONSE.redirect('manage_main') |
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| 499 | |
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| 500 | |
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