1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
|
"""
Import data from a XHTML file to a KexiDB table.
Description:
This script implements import of data from a XHTML file to a KexiDB table. The
table needs to be an already existing table the data should be added to.
Author:
Sebastian Sauer <[email protected]>
Copyright:
Dual-licensed under LGPL v2+higher and the BSD license.
"""
class SaxInput:
""" The inputsource we like to import the data from. This class
provides us abstract access to the SAX XML parser we use internaly
to import data from the XML-file. """
xmlfile = None
""" The XML file we should read the content from. """
def __init__(self):
""" Constructor. """
# try to import the xml.sax python module.
try:
import xml.sax.saxlib
import xml.sax.saxexts
except:
raise Exception("Import of the python xml.sax.saxlib module failed. This module is needed by the ImportXHTML python script.")
def read(self, outputwriter):
""" Start reading and parsing the XML-file. """
import xml.sax.saxlib
import xml.sax.saxexts
class SaxHandler(xml.sax.saxlib.HandlerBase):
""" The SaxHandler is our event-handler SAX calls on
parsing the XML-file. """
tablebase = ["html","body","table"]
""" The table-base defines where we will find our table-tag
that holds all the data we are interessted at. The default
is to look at <html><body><table></table></body></html>. """
def __init__(self, inputreader, outputwriter):
""" Constructor. """
# The to a SaxInput instance pointing inputreader.
self.inputreader = inputreader
# The to a KexiDBOutput instance pointing outputwriter.
self.outputwriter = outputwriter
# The hierachy-level in the DOM-tree we are in.
self.level = 0
# Defines if we are in the with tablebase defined DOM-element.
self.intable = False
# Points to a KexiDBOutput.Record instance if we are in a DOM-element that defines a record.
self.record = None
# Points to a KexiDBOutput.Field instance if we are in a record's field.
self.field = None
def startDocument(self):
sys.stdout.write('=> Starting parsing\n')
def endDocument(self):
sys.stdout.write('=> Fineshed parsing\n')
def startElement(self, name, attrs):
""" This method is called by SAX if a DOM-element starts. """
if self.level < len(self.tablebase):
if self.tablebase[self.level] != name:
self.intable = False
else:
self.intable = True
self.level += 1
if not self.intable:
return
# Print some debugging-output to stdout.
for idx in range(self.level): sys.stdout.write(' ')
sys.stdout.write('Element: %s' % name)
for attrName in list(attrs.keys()):
sys.stdout.write(' %s="%s"' % (attrName,attrs.get(attrName)))
sys.stdout.write('\n')
# handle tr-, th- and td-tags inside the table.
if name == "tr" and (self.level == len(self.tablebase) + 1):
self.record = self.outputwriter.Record()
elif name == "td" and (self.level == len(self.tablebase) + 2):
self.field = self.outputwriter.Field()
elif name == "th" and (self.level == len(self.tablebase) + 2):
self.field = self.outputwriter.Field()
def endElement(self, name):
""" This method is called by SAX if a DOM-Element ends. """
self.level -= 1
#sys.stdout.write('EndElement:%s level:%s len(self.tablebase):%s\n' % (name,self.level,len(self.tablebase)))
if self.record != None:
# a record is defined. so, we are looking for the matching
# end-tags to close a record or a field.
if name == "tr" and (self.level == len(self.tablebase)):
self.outputwriter.write(self.record)
self.record = None
self.field = None
elif name == "td" and (self.level == len(self.tablebase) + 1):
#if self.field == None:
# raise Exception("Unexpected closing </td>")
self.record.setField( self.field )
self.field = None
elif name == "th" and (self.level == len(self.tablebase) + 1):
#if self.field == None:
# raise Exceptin("Unexpected closing </td>")
self.record.setHeader( self.field )
self.field = None
def characters(self, chars, offset, length):
""" This method is called by SAX if the text-content of a DOM-Element
was parsed. """
if self.field != None:
# the xml-data is unicode and we need to encode it
# to latin-1 cause KexiDB deals only with latin-1.
u = str(chars[offset:offset+length])
self.field.append(u.encode("latin-1"))
# start the job
outputwriter.begin()
# create saxhandler to handle parsing events.
handler = SaxHandler(self, outputwriter)
# we need a sax-parser and connect it with the handler.
parser = xml.sax.saxexts.make_parser()
parser.setDocumentHandler(handler)
# open the XML-file, parse the content and close the file again.
f = file(self.xmlfile, 'r')
parser.parseFile(f)
f.close()
# job is done
outputwriter.end()
class KexiDBOutput:
""" The destination target we like to import the data to. This class
provides abstract access to the KexiDB module. """
class Result:
""" Holds some informations about the import-result. """
def __init__(self, outputwriter):
self.outputwriter = outputwriter
# number of records successfully imported.
self.successcount = 0
# number of records where import failed.
self.failedcount = 0
def addLog(self, record, state):
import datetime
date = datetime.datetime.now().strftime("%Y-%m-%d %H:%M.%S")
self.outputwriter.logfile.write("%s (%s) %s\n" % (date,state,str(record)))
def success(self, record):
""" Called if a record was written successfully. """
print("SUCCESS: %s" % str(record))
self.successcount += 1
if hasattr(self.outputwriter,"logfile"):
self.addLog(record, "Success")
def failed(self, record):
""" Called if we failed to write a record. """
print("FAILED: %s" % str(record))
self.failedcount += 1
if hasattr(self.outputwriter,"logfile"):
self.addLog(record, "Failed")
class Record:
""" A Record in the dataset. """
def __init__(self):
self.fields = []
def setHeader(self, headerfield):
self.fields.append( headerfield )
self.isHeader = True
def setField(self, field):
self.fields.append( field )
def __str__(self):
s = "["
for f in self.fields:
s += "%s, " % str(f)
return s + "]"
class Field:
""" A field in a record. """
def __init__(self):
self.content = []
def append(self, content):
self.content.append( content )
def __str__(self):
return "".join(self.content)
def __init__(self):
""" Constructor. """
import kexiapp
keximainwindow = kexiapp.get("KexiAppMainWindow")
try:
self.connection = keximainwindow.getConnection()
except:
raise Exception("No connection established. Please open a project before.")
self.fieldlist = None
self.headerrecord = None
self.mapping = {}
def begin(self):
""" Called before parsing starts. """
print("START JOB")
if self.fieldlist == None:
raise Exceptin("Invalid tableschema or fieldlist!")
global KexiDBOutput
self.result = KexiDBOutput.Result(self)
if hasattr(self,"logfilename") and self.logfilename != None and self.logfilename != "":
self.logfile = open(self.logfilename,'w')
def end(self):
""" Called if parsing is fineshed. """
print("END JOB")
self.logfile = None
self.mapping = {}
#self.headerrecord = None
def getTables(self):
""" return a list of avaiable tablenames. """
tables = self.connection.tableNames()
tables.sort()
return tables
def setTable(self, tablename):
""" Set the tablename we like to import the data to. """
tableschema = self.connection.tableSchema(tablename)
if tableschema == None:
raise Exceptin("There exists no table with the name '%s'!" % tablename)
self.fieldlist = tableschema.fieldlist()
fields = self.fieldlist.fields()
for field in fields:
print("KexiDBOutput.setTable(%s): %s(%s)" % (tablename,field.name(),field.type()))
print("names=%s" % self.fieldlist.names())
def setMapping(self, mapping):
""" Set the tablefieldname=xmlcolnr dictonary we should map the data to. """
self.mapping = mapping
def setLogFile(self, logfilename):
""" Set the name of the logfile. """
self.logfilename = logfilename
def write(self, record):
""" Write the record to the KexiDB table. """
if hasattr(record, "isHeader"):
self.headerrecord = record
return
sys.stdout.write('KexiDBOutput.write:')
for f in record.fields:
sys.stdout.write(' "%s"' % f)
sys.stdout.write('\n')
if hasattr(self,"onWrite"):
if not self.onWrite(record):
raise RuntimeError()
delattr(self,"onWrite")
self.fieldlist = self.fieldlist.subList( list( self.mapping ) )
# Translate a KexiDBOutput.Record into a list of values.
values = []
for k in self.fieldlist.names():
values.append( str(record.fields[ int(self.mapping[k]) ]) )
print("Import values: %s" % values)
try:
if self.connection.insertRecord(self.fieldlist, values):
self.result.success(record)
else:
self.result.failed(record)
except:
err = self.connection.lastError()
raise Exception( "Failed to insert the record:\n%s\n\n%s" % (values,err) )
#raise Exception( "Failed to insert into table \"%s\" the record:\n%s\n%s" % (self.tableschema.name(),values,self.connection.lastError()) )
class GuiApp:
""" The GUI-dialog displayed to let the user define the source
XML-file and the destination KexiDB table. """
class InitialDialog:
def __init__(self, guiapp):
self.guiapp = guiapp
self.ok = False
import gui
self.dialog = gui.Dialog("Import XHTML")
self.dialog.addLabel(self.dialog, "Import data from a XHTML-file to a KexiDB table.\n"
"The destination table needs to be an existing table the data should be added to.")
self.importfile = self.dialog.addFileChooser(self.dialog,
"Source File:",
gui.getHome() + "/kexidata.xhtml",
(('XHTML files', '*.xhtml'),('All files', '*')))
self.desttable = self.dialog.addList(self.dialog, "Destination Table:", self.guiapp.outputwriter.getTables())
#self.operation = self.dialog.addList(self.dialog, "Operation:", ("Insert","Update","Insert/Update"))
#self.error = self.dialog.addList(self.dialog, "On error:", ("Ask","Skip","Abort"))
self.logfile = self.dialog.addFileChooser(self.dialog,
"Log File:",
"",
(('Logfiles', '*.log'),('All files', '*')))
btnframe = self.dialog.addFrame(self.dialog)
self.dialog.addButton(btnframe, "Next", self.doNext)
self.dialog.addButton(btnframe, "Cancel", self.doCancel)
self.dialog.show()
def doCancel(self):
""" Called if the Cancel-button was pressed. """
self.dialog.close()
self.dialog = None
#self.guiapp.InitialDialog
def doNext(self):
""" Start to import the XML-file into the KexiDB table. """
self.guiapp.inputreader.xmlfile = str(self.importfile.get())
self.guiapp.outputwriter.setTable( str(self.desttable.get()) )
self.guiapp.outputwriter.setLogFile( str(self.logfile.get()) )
try:
self.guiapp.inputreader.read( self.guiapp.outputwriter )
msgbox = self.dialog.showMessageBox("info","Import done",
"Successfully imported records: %s\nFailed to import records: %s" % (self.guiapp.outputwriter.result.successcount, self.guiapp.outputwriter.result.failedcount) )
msgbox.show()
self.doCancel()
except RuntimeError as e:
pass
#except Exception, e:
# import traceback
# traceback.print_exc()
# msgbox = self.dialog.showMessageBox("error", "Error", e)
# msgbox.show()
class MapperDialog:
""" The dialog that provides us a way to map
XHTML columns to the destination table. """
def __init__(self, outputwriter, record):
self.outputwriter = outputwriter
self.ok = False
fieldlist = outputwriter.fieldlist
import gui
self.dlg = gui.Dialog("Import XHTML")
self.dlg.addLabel(self.dlg, "Define how the destination table should be mapped to the data from the XHTML file.")
values = ["",]
for i in range(len(record.fields)):
try:
values.append( "%s: %s" % (i,str(outputwriter.headerrecord.fields[i])) )
except:
values.append( "%s: (%s)" % (i,str(record.fields[i])) )
self.items = []
i = 0
for field in fieldlist.fields():
f = self.dlg.addFrame(self.dlg)
l = self.dlg.addList(f, "%s:" % field.name(), values)
self.items.append( (field,l) )
details = "%s:" % str( field.type() )
if field.isAutoInc(): details += "autoinc,"
if field.isUniqueKey(): details += "unique,"
if field.isNotNull(): details += "notnull,"
if field.isNotEmpty(): details += "notempty,"
self.dlg.addLabel(f, "(%s)" % details[:-1])
try:
variable = str( record.fields[i] )
try:
int(variable)
i += 1
if not field.isAutoInc():
l.set(i)
except ValueError as e:
if not field.type() in ("Integer","BigInteger","ShortInteger","Float","Double"):
i += 1
l.set(i)
except:
pass
btnframe = self.dlg.addFrame(self.dlg)
self.dlg.addButton(btnframe, "Next", self.doNext)
self.dlg.addButton(btnframe, "Cancel", self.dlg.close)
self.dlg.show()
def doNext(self):
mapping = {}
for item in self.items:
(field,l) = item
fieldname = field.name()
colnr = str( l.get() ).split(":",1)[0]
if colnr.isdigit():
print("Table field '%s' is mapped to XML column '%s'" % (fieldname,colnr))
mapping[ fieldname ] = colnr
self.outputwriter.setMapping(mapping)
self.ok = True
self.dlg.close()
def __init__(self, inputreader, outputwriter):
""" Constructor. """
self.inputreader = inputreader
self.outputwriter = outputwriter
self.outputwriter.onWrite = self.onWrite
self.InitialDialog(self)
def onWrite(self, record):
""" This method got called after the first record got
readed and before we start to import. """
return self.MapperDialog(self.outputwriter, record).ok
GuiApp( SaxInput(), KexiDBOutput() )
|
