1 | import time, os, sys |
---|
2 | import logging |
---|
3 | import copy |
---|
4 | import DataLoader |
---|
5 | from xml.dom.minidom import parse |
---|
6 | from lxml import etree |
---|
7 | |
---|
8 | from DataLoader.readers.cansas_reader import Reader as CansasReader |
---|
9 | from DataLoader.readers.cansas_reader import get_content |
---|
10 | from sans.guiframe.utils import format_number |
---|
11 | from sans.guiframe.dataFitting import Theory1D, Data1D |
---|
12 | INVNODE_NAME = 'invariant' |
---|
13 | CANSAS_NS = "cansas1d/1.0" |
---|
14 | # default state |
---|
15 | list = {'file': 'None', |
---|
16 | 'compute_num':0, |
---|
17 | 'state_num':0, |
---|
18 | 'is_time_machine':False, |
---|
19 | 'background_tcl':0.0, |
---|
20 | 'scale_tcl':1.0, |
---|
21 | 'contrast_tcl':1.0, |
---|
22 | 'porod_constant_tcl':'', |
---|
23 | 'npts_low_tcl':10, |
---|
24 | 'npts_high_tcl':10, |
---|
25 | 'power_high_tcl':4.0, |
---|
26 | 'power_low_tcl': 4.0, |
---|
27 | 'enable_high_cbox':False, |
---|
28 | 'enable_low_cbox':False, |
---|
29 | 'guinier': True, |
---|
30 | 'power_law_high': False, |
---|
31 | 'power_law_low': False, |
---|
32 | 'fit_enable_high': False, |
---|
33 | 'fit_enable_low': False, |
---|
34 | 'fix_enable_high':True, |
---|
35 | 'fix_enable_low':True, |
---|
36 | 'volume_tcl':'', |
---|
37 | 'volume_err_tcl':'', |
---|
38 | 'surface_tcl':'', |
---|
39 | 'surface_err_tcl':''} |
---|
40 | # list of states: This list will be filled as panel init and the number of states increases |
---|
41 | state_list = {} |
---|
42 | bookmark_list = {} |
---|
43 | # list of input parameters (will be filled up on panel init) used by __str__ |
---|
44 | input_list = {} |
---|
45 | # list of output parameters (order sensitive) used by __str__ |
---|
46 | output_list = [["qstar_low", "Q* from low Q extrapolation [1/(cm*A)]"], |
---|
47 | ["qstar_low_err", "dQ* from low Q extrapolation"], |
---|
48 | ["qstar_low_percent", "Q* percent from low Q extrapolation"], |
---|
49 | ["qstar", "Q* from data [1/(cm*A)]"], |
---|
50 | ["qstar_err", "dQ* from data"], |
---|
51 | ["qstar_percent", "Q* percent from data"], |
---|
52 | ["qstar_high", "Q* from high Q extrapolation [1/(cm*A)]"], |
---|
53 | ["qstar_high_err", "dQ* from high Q extrapolation"], |
---|
54 | ["qstar_high_percent", "Q* percent from low Q extrapolation"], |
---|
55 | ["qstar_total", "total Q* [1/(cm*A)]"], |
---|
56 | ["qstar_total_err", "total dQ*"], |
---|
57 | ["volume", "volume fraction"], |
---|
58 | ["volume_err", "volume fraction error"], |
---|
59 | ["surface", "specific surface"], |
---|
60 | ["surface_err", "specific surface error"]] |
---|
61 | |
---|
62 | |
---|
63 | |
---|
64 | class InvariantState(object): |
---|
65 | """ |
---|
66 | Class to hold the state information of the InversionControl panel. |
---|
67 | """ |
---|
68 | def __init__(self): |
---|
69 | """ |
---|
70 | Default values |
---|
71 | """ |
---|
72 | # Input |
---|
73 | self.file = None |
---|
74 | self.data = Data1D(x=[], y=[], dx=None, dy=None) |
---|
75 | self.theory_lowQ = Theory1D(x=[], y=[], dy=None) |
---|
76 | self.theory_highQ = Theory1D(x=[], y=[], dy=None) |
---|
77 | #self.is_time_machine = False |
---|
78 | self.saved_state = list |
---|
79 | self.state_list = state_list |
---|
80 | self.bookmark_list = bookmark_list |
---|
81 | self.input_list = input_list |
---|
82 | self.output_list = output_list |
---|
83 | |
---|
84 | self.compute_num = 0 |
---|
85 | self.state_num = 0 |
---|
86 | self.timestamp = None |
---|
87 | self.container = None |
---|
88 | |
---|
89 | |
---|
90 | def __str__(self): |
---|
91 | """ |
---|
92 | Pretty print |
---|
93 | |
---|
94 | : return: string representing the state |
---|
95 | """ |
---|
96 | # Input string |
---|
97 | compute_num = self.saved_state['compute_num'] |
---|
98 | compute_state = self.state_list[str(compute_num)] |
---|
99 | my_time, date = self.timestamp |
---|
100 | file_name = self.file |
---|
101 | |
---|
102 | state_num = int(self.saved_state['state_num']) |
---|
103 | state = "\n[Invariant computation for %s: "% file_name |
---|
104 | state += "performed at %s on %s] \n"%(my_time, date) |
---|
105 | state += "State No.: %d \n"% state_num |
---|
106 | state += "\n=== Inputs ===\n" |
---|
107 | |
---|
108 | # text ctl general inputs ( excluding extrapolation text ctl) |
---|
109 | for key,value in self.input_list.iteritems(): |
---|
110 | if value == '': |
---|
111 | continue |
---|
112 | key_split = key.split('_') |
---|
113 | max_ind = len(key_split)-1 |
---|
114 | if key_split[max_ind] == 'tcl': |
---|
115 | name ="" |
---|
116 | if key_split[1]== 'low' or key_split[1]== 'high': |
---|
117 | continue |
---|
118 | for ind in range(0,max_ind): |
---|
119 | name +=" %s"%key_split[ind] |
---|
120 | state += "%s: %s\n"% (name.lstrip(" "),value) |
---|
121 | |
---|
122 | # other input parameters |
---|
123 | extra_lo = compute_state['enable_low_cbox'] |
---|
124 | if compute_state['enable_low_cbox']: |
---|
125 | if compute_state['guinier']: |
---|
126 | extra_lo = 'Guinier' |
---|
127 | else: |
---|
128 | extra_lo = 'Power law' |
---|
129 | extra_hi = compute_state['enable_high_cbox'] |
---|
130 | if compute_state['enable_high_cbox']: |
---|
131 | extra_hi = 'Power law' |
---|
132 | state += "\nExtrapolation: High=%s; Low=%s\n" %(extra_hi,extra_lo) |
---|
133 | low_off = False |
---|
134 | high_off = False |
---|
135 | for key,value in self.input_list.iteritems(): |
---|
136 | key_split = key.split('_') |
---|
137 | max_ind = len(key_split)-1 |
---|
138 | if key_split[max_ind] == 'tcl': |
---|
139 | name ="" |
---|
140 | # check each buttons whether or not ON or OFF |
---|
141 | if key_split[1]== 'low' or key_split[1]== 'high': |
---|
142 | if not compute_state['enable_low_cbox'] and key_split[max_ind-1] == 'low': |
---|
143 | low_off = True |
---|
144 | continue |
---|
145 | elif not compute_state['enable_high_cbox'] and key_split[max_ind-1]== 'high': |
---|
146 | high_off = True |
---|
147 | continue |
---|
148 | elif extra_lo == 'Guinier' and key_split[0]== 'power' and key_split[max_ind-1]== 'low': |
---|
149 | continue |
---|
150 | for ind in range(0,max_ind): |
---|
151 | name +=" %s"%key_split[ind] |
---|
152 | name = name.lstrip(" ") |
---|
153 | if name == "power low" : |
---|
154 | if compute_state['fix_enable_low']: |
---|
155 | name += ' (Fixed)' |
---|
156 | else: |
---|
157 | name += ' (Fitted)' |
---|
158 | if name == "power high" : |
---|
159 | if compute_state['fix_enable_high']: |
---|
160 | name += ' (Fixed)' |
---|
161 | else: |
---|
162 | name += ' (Fitted)' |
---|
163 | state += "%s: %s\n"% (name,value) |
---|
164 | # Outputs |
---|
165 | state += "\n=== Outputs ===" |
---|
166 | for item in output_list: |
---|
167 | item_split = item[0].split('_') |
---|
168 | # Exclude the extrapolation that turned off |
---|
169 | if len(item_split)>1: |
---|
170 | if low_off and item_split[1] == 'low': continue |
---|
171 | if high_off and item_split[1] == 'high': continue |
---|
172 | max_ind = len(item_split)-1 |
---|
173 | value = None |
---|
174 | try: |
---|
175 | # Q* outputs |
---|
176 | exec "value = self.container.%s\n"% item[0] |
---|
177 | except: |
---|
178 | # other outputs than Q* |
---|
179 | name = item[0]+"_tcl" |
---|
180 | exec "value = self.saved_state['%s']"% name |
---|
181 | |
---|
182 | # Exclude the outputs w/'' |
---|
183 | if value == '': continue |
---|
184 | |
---|
185 | # Error outputs |
---|
186 | if item_split[max_ind] == 'err': |
---|
187 | state += "+- %s "%format_number(value) |
---|
188 | |
---|
189 | # Percentage outputs |
---|
190 | elif item_split[max_ind] == 'percent': |
---|
191 | try: |
---|
192 | value = float(value)*100 |
---|
193 | except: |
---|
194 | pass |
---|
195 | state += "(%s %s)"%(format_number(value),'%') |
---|
196 | # Outputs |
---|
197 | else: |
---|
198 | state += "\n%s: %s "%(item[1],format_number(value,high=True)) |
---|
199 | # Include warning msg |
---|
200 | state += "\n\nNote:\n" + self.container.warning_msg |
---|
201 | |
---|
202 | return state |
---|
203 | |
---|
204 | |
---|
205 | def clone_state(self): |
---|
206 | """ |
---|
207 | deepcopy the state |
---|
208 | """ |
---|
209 | return copy.deepcopy(self.saved_state) |
---|
210 | |
---|
211 | |
---|
212 | def toXML(self, file="inv_state.inv", doc=None, entry_node=None): |
---|
213 | """ |
---|
214 | Writes the state of the InversionControl panel to file, as XML. |
---|
215 | |
---|
216 | Compatible with standalone writing, or appending to an |
---|
217 | already existing XML document. In that case, the XML document |
---|
218 | is required. An optional entry node in the XML document may also be given. |
---|
219 | |
---|
220 | : param file: file to write to |
---|
221 | : param doc: XML document object [optional] |
---|
222 | : param entry_node: XML node within the XML document at which we will append the data [optional] |
---|
223 | """ |
---|
224 | from xml.dom.minidom import getDOMImplementation |
---|
225 | import time |
---|
226 | timestamp = time.time() |
---|
227 | # Check whether we have to write a standalone XML file |
---|
228 | if doc is None: |
---|
229 | impl = getDOMImplementation() |
---|
230 | |
---|
231 | doc_type = impl.createDocumentType(INVNODE_NAME, "1.0", "1.0") |
---|
232 | |
---|
233 | newdoc = impl.createDocument(None, INVNODE_NAME, doc_type) |
---|
234 | top_element = newdoc.documentElement |
---|
235 | else: |
---|
236 | # We are appending to an existing document |
---|
237 | newdoc = doc |
---|
238 | top_element = newdoc.createElement(INVNODE_NAME) |
---|
239 | if entry_node is None: |
---|
240 | newdoc.documentElement.appendChild(top_element) |
---|
241 | else: |
---|
242 | entry_node.appendChild(top_element) |
---|
243 | |
---|
244 | attr = newdoc.createAttribute("version") |
---|
245 | attr.nodeValue = '1.0' |
---|
246 | top_element.setAttributeNode(attr) |
---|
247 | |
---|
248 | # File name |
---|
249 | element = newdoc.createElement("filename") |
---|
250 | if self.file is not None: |
---|
251 | element.appendChild(newdoc.createTextNode(str(self.file))) |
---|
252 | else: |
---|
253 | element.appendChild(newdoc.createTextNode(str(file))) |
---|
254 | top_element.appendChild(element) |
---|
255 | |
---|
256 | element = newdoc.createElement("timestamp") |
---|
257 | element.appendChild(newdoc.createTextNode(time.ctime(timestamp))) |
---|
258 | attr = newdoc.createAttribute("epoch") |
---|
259 | attr.nodeValue = str(timestamp) |
---|
260 | element.setAttributeNode(attr) |
---|
261 | top_element.appendChild(element) |
---|
262 | |
---|
263 | # Current state |
---|
264 | state = newdoc.createElement("state") |
---|
265 | top_element.appendChild(state) |
---|
266 | |
---|
267 | for name,value in self.saved_state.iteritems(): |
---|
268 | element = newdoc.createElement(str(name)) |
---|
269 | element.appendChild(newdoc.createTextNode(str(value))) |
---|
270 | state.appendChild(element) |
---|
271 | |
---|
272 | # State history list |
---|
273 | history = newdoc.createElement("history") |
---|
274 | top_element.appendChild(history) |
---|
275 | |
---|
276 | for name, value in self.state_list.iteritems(): |
---|
277 | history_element = newdoc.createElement('state_'+str(name)) |
---|
278 | for state_name,state_value in value.iteritems(): |
---|
279 | state_element = newdoc.createElement(str(state_name)) |
---|
280 | state_element.appendChild(newdoc.createTextNode(str(state_value))) |
---|
281 | history_element.appendChild(state_element) |
---|
282 | #history_element.appendChild(state_list_element) |
---|
283 | history.appendChild(history_element) |
---|
284 | |
---|
285 | # Bookmarks bookmark_list[self.bookmark_num] = [my_time,date,state,comp_state] |
---|
286 | bookmark = newdoc.createElement("bookmark") |
---|
287 | top_element.appendChild(bookmark) |
---|
288 | item_list = ['time','date','state','comp_state'] |
---|
289 | for name, value_list in self.bookmark_list.iteritems(): |
---|
290 | element = newdoc.createElement('mark_'+ str(name)) |
---|
291 | time,date,state,comp_state = value_list |
---|
292 | time_element = newdoc.createElement('time') |
---|
293 | time_element.appendChild(newdoc.createTextNode(str(value_list[0]))) |
---|
294 | date_element = newdoc.createElement('date') |
---|
295 | date_element.appendChild(newdoc.createTextNode(str(value_list[1]))) |
---|
296 | state_list_element = newdoc.createElement('state') |
---|
297 | comp_state_list_element = newdoc.createElement('comp_state') |
---|
298 | for state_name,state_value in value_list[2].iteritems(): |
---|
299 | state_element = newdoc.createElement(str(state_name)) |
---|
300 | state_element.appendChild(newdoc.createTextNode(str(state_value))) |
---|
301 | state_list_element.appendChild(state_element) |
---|
302 | for comp_name,comp_value in value_list[3].iteritems(): |
---|
303 | comp_element = newdoc.createElement(str(comp_name)) |
---|
304 | comp_element.appendChild(newdoc.createTextNode(str(comp_value))) |
---|
305 | comp_state_list_element.appendChild(comp_element) |
---|
306 | element.appendChild(time_element) |
---|
307 | element.appendChild(date_element) |
---|
308 | element.appendChild(state_list_element) |
---|
309 | element.appendChild(comp_state_list_element) |
---|
310 | bookmark.appendChild(element) |
---|
311 | |
---|
312 | # Save the file |
---|
313 | if doc is None: |
---|
314 | fd = open('test000', 'w') |
---|
315 | fd.write(newdoc.toprettyxml()) |
---|
316 | fd.close() |
---|
317 | return None |
---|
318 | else: |
---|
319 | return newdoc.toprettyxml() |
---|
320 | |
---|
321 | def fromXML(self, file=None, node=None): |
---|
322 | """ |
---|
323 | Load invariant states from a file |
---|
324 | |
---|
325 | : param file: .inv file |
---|
326 | : param node: node of a XML document to read from |
---|
327 | """ |
---|
328 | if file is not None: |
---|
329 | raise RuntimeError, "InvariantSate no longer supports non-CanSAS format for invariant files" |
---|
330 | |
---|
331 | if node.get('version')\ |
---|
332 | and node.get('version') == '1.0': |
---|
333 | |
---|
334 | # Get file name |
---|
335 | entry = get_content('ns:filename', node) |
---|
336 | if entry is not None: |
---|
337 | self.file = entry.text.strip() |
---|
338 | |
---|
339 | # Get time stamp |
---|
340 | entry = get_content('ns:timestamp', node) |
---|
341 | if entry is not None and entry.get('epoch'): |
---|
342 | try: |
---|
343 | timestamp = (entry.get('epoch')) |
---|
344 | except: |
---|
345 | logging.error("InvariantSate.fromXML: Could not read timestamp\n %s" % sys.exc_value) |
---|
346 | |
---|
347 | # Parse bookmarks |
---|
348 | entry_bookmark = get_content('ns:bookmark', node) |
---|
349 | |
---|
350 | for ind in range(1,len(entry_bookmark)+1): |
---|
351 | temp_state = {} |
---|
352 | temp_bookmark = {} |
---|
353 | entry = get_content('ns:mark_%s' % ind, entry_bookmark) |
---|
354 | |
---|
355 | if entry is not None: |
---|
356 | time = get_content('ns:time', entry ) |
---|
357 | val_time = str(time.text.strip()) |
---|
358 | date = get_content('ns:date', entry ) |
---|
359 | val_date = str(date.text.strip()) |
---|
360 | state_entry = get_content('ns:state', entry ) |
---|
361 | for item in list: |
---|
362 | |
---|
363 | input_field = get_content('ns:%s' % item, state_entry ) |
---|
364 | val = str(input_field.text.strip()) |
---|
365 | |
---|
366 | if input_field is not None: |
---|
367 | try: |
---|
368 | exec "temp_state['%s'] = %s"% (item,val) |
---|
369 | except: |
---|
370 | exec "temp_state['%s'] = '%s'"% (item,val) |
---|
371 | |
---|
372 | |
---|
373 | comp_entry = get_content('ns:comp_state', entry ) |
---|
374 | |
---|
375 | for item in list: |
---|
376 | input_field = get_content('ns:%s' % item, comp_entry ) |
---|
377 | val = str(input_field.text.strip()) |
---|
378 | if input_field is not None: |
---|
379 | try: |
---|
380 | exec "temp_bookmark['%s'] = %s"% (item,val) |
---|
381 | except: |
---|
382 | exec "temp_bookmark['%s'] = '%s'"% (item,val) |
---|
383 | try: |
---|
384 | exec "self.bookmark_list[%s] = [val_time,val_date,temp_state,temp_bookmark]"% ind |
---|
385 | |
---|
386 | except: |
---|
387 | raise "missing components of bookmarks..." |
---|
388 | |
---|
389 | # Parse histories |
---|
390 | entry_history = get_content('ns:history', node) |
---|
391 | |
---|
392 | for ind in range(0,len(entry_history)): |
---|
393 | temp_state = {} |
---|
394 | entry = get_content('ns:state_%s' % ind, entry_history) |
---|
395 | |
---|
396 | if entry is not None: |
---|
397 | for item in list: |
---|
398 | input_field = get_content('ns:%s' % item, entry ) |
---|
399 | val = str(input_field.text.strip()) |
---|
400 | |
---|
401 | if input_field is not None: |
---|
402 | try: |
---|
403 | exec "temp_state['%s'] = %s"% (item,val) |
---|
404 | except: |
---|
405 | exec "temp_state['%s'] = '%s'"% (item,val) |
---|
406 | finally: |
---|
407 | exec "self.state_list['%s'] = temp_state"% ind |
---|
408 | |
---|
409 | # Parse current state (ie, saved_state) |
---|
410 | entry = get_content('ns:state', node) |
---|
411 | if entry is not None: |
---|
412 | for item in list: |
---|
413 | input_field = get_content('ns:%s' % item, entry) |
---|
414 | val = str(input_field.text.strip()) |
---|
415 | if input_field is not None: |
---|
416 | self.set_saved_state(name=item, value=val) |
---|
417 | |
---|
418 | |
---|
419 | |
---|
420 | def set_saved_state(self, name, value): |
---|
421 | """ |
---|
422 | Set the state list |
---|
423 | |
---|
424 | : param name: name of the state component |
---|
425 | : param value: value of the state component |
---|
426 | """ |
---|
427 | rb_list = [['power_law_low','guinier'],['fit_enable_low','fix_enable_low'],['fit_enable_high','fix_enable_high']] |
---|
428 | |
---|
429 | try: |
---|
430 | if value == None or value.lstrip().rstrip() =='': |
---|
431 | exec "self.%s = '%s'" % (name, value) |
---|
432 | exec "self.saved_state['%s'] = '%s'" % (name, value) |
---|
433 | else: |
---|
434 | exec 'self.%s = %s' % (name, value) |
---|
435 | exec "self.saved_state['%s'] = %s" % (name, value) |
---|
436 | |
---|
437 | |
---|
438 | # set the count part of radio button clicked False for the saved_state |
---|
439 | for title,content in rb_list: |
---|
440 | if name == title: |
---|
441 | name = content |
---|
442 | value = False |
---|
443 | elif name == content: |
---|
444 | name = title |
---|
445 | value = False |
---|
446 | exec "self.saved_state['%s'] = '%s'" % (name, value) |
---|
447 | self.state_num = self.saved_state['state_num'] |
---|
448 | except: |
---|
449 | pass |
---|
450 | |
---|
451 | |
---|
452 | |
---|
453 | class Reader(CansasReader): |
---|
454 | """ |
---|
455 | Class to load a .inv invariant file |
---|
456 | """ |
---|
457 | ## File type |
---|
458 | type_name = "Invariant" |
---|
459 | |
---|
460 | ## Wildcards |
---|
461 | type = ["Invariant file (*.inv)|*.inv"] |
---|
462 | ## List of allowed extensions |
---|
463 | ext=['.inv', '.INV'] |
---|
464 | |
---|
465 | def __init__(self, call_back, cansas=True): |
---|
466 | """ |
---|
467 | Initialize the call-back method to be called |
---|
468 | after we load a file |
---|
469 | |
---|
470 | : param call_back: call-back method |
---|
471 | : param cansas: True = files will be written/read in CanSAS format |
---|
472 | False = write CanSAS format |
---|
473 | """ |
---|
474 | ## Call back method to be executed after a file is read |
---|
475 | self.call_back = call_back |
---|
476 | ## CanSAS format flag |
---|
477 | self.cansas = cansas |
---|
478 | |
---|
479 | def read(self, path): |
---|
480 | """ |
---|
481 | Load a new invariant state from file |
---|
482 | |
---|
483 | : param path: file path |
---|
484 | : return: None |
---|
485 | """ |
---|
486 | if self.cansas==True: |
---|
487 | return self._read_cansas(path) |
---|
488 | else: |
---|
489 | return self._read_standalone(path) |
---|
490 | |
---|
491 | def _read_standalone(self, path): |
---|
492 | """ |
---|
493 | Load a new invariant state from file. |
---|
494 | The invariant node is assumed to be the top element. |
---|
495 | |
---|
496 | : param path: file path |
---|
497 | : return: None |
---|
498 | """ |
---|
499 | # Read the new state from file |
---|
500 | state = InvariantState() |
---|
501 | |
---|
502 | state.fromXML(file=path) |
---|
503 | |
---|
504 | # Call back to post the new state |
---|
505 | self.call_back(state) |
---|
506 | return None |
---|
507 | |
---|
508 | def _parse_state(self, entry): |
---|
509 | """ |
---|
510 | Read an invariant result from an XML node |
---|
511 | |
---|
512 | : param entry: XML node to read from |
---|
513 | : return: InvariantState object |
---|
514 | """ |
---|
515 | # Create an empty state |
---|
516 | state = InvariantState() |
---|
517 | |
---|
518 | # Locate the invariant node |
---|
519 | try: |
---|
520 | nodes = entry.xpath('ns:%s' % INVNODE_NAME, namespaces={'ns': CANSAS_NS}) |
---|
521 | state.fromXML(node=nodes[0]) |
---|
522 | except: |
---|
523 | logging.info("XML document does not contain invariant information.\n %s" % sys.exc_value) |
---|
524 | return state |
---|
525 | |
---|
526 | def _read_cansas(self, path): |
---|
527 | """ |
---|
528 | Load data and invariant information from a CanSAS XML file. |
---|
529 | |
---|
530 | : param path: file path |
---|
531 | : return: Data1D object if a single SASentry was found, |
---|
532 | or a list of Data1D objects if multiple entries were found, |
---|
533 | or None of nothing was found |
---|
534 | : raise RuntimeError: when the file can't be opened |
---|
535 | : raise ValueError: when the length of the data vectors are inconsistent |
---|
536 | """ |
---|
537 | output = [] |
---|
538 | |
---|
539 | if os.path.isfile(path): |
---|
540 | basename = os.path.basename(path) |
---|
541 | root, extension = os.path.splitext(basename) |
---|
542 | |
---|
543 | if extension.lower() in self.ext or \ |
---|
544 | extension.lower() == '.xml': |
---|
545 | tree = etree.parse(path, parser=etree.ETCompatXMLParser()) |
---|
546 | |
---|
547 | # Check the format version number |
---|
548 | # Specifying the namespace will take care of the file format version |
---|
549 | root = tree.getroot() |
---|
550 | |
---|
551 | entry_list = root.xpath('/ns:SASroot/ns:SASentry', namespaces={'ns': CANSAS_NS}) |
---|
552 | |
---|
553 | for entry in entry_list: |
---|
554 | |
---|
555 | sas_entry = self._parse_entry(entry) |
---|
556 | invstate = self._parse_state(entry) |
---|
557 | sas_entry.meta_data['invstate'] = invstate |
---|
558 | |
---|
559 | sas_entry.filename = invstate.file |
---|
560 | output.append(sas_entry) |
---|
561 | |
---|
562 | else: |
---|
563 | raise RuntimeError, "%s is not a file" % path |
---|
564 | |
---|
565 | # Return output consistent with the loader's api |
---|
566 | if len(output)==0: |
---|
567 | return None |
---|
568 | elif len(output)==1: |
---|
569 | # Call back to post the new state |
---|
570 | |
---|
571 | self.call_back(state=output[0].meta_data['invstate'], datainfo = output[0]) |
---|
572 | return output[0] |
---|
573 | else: |
---|
574 | return output |
---|
575 | |
---|
576 | |
---|
577 | def write(self, filename, datainfo=None, invstate=None): |
---|
578 | """ |
---|
579 | Write the content of a Data1D as a CanSAS XML file |
---|
580 | |
---|
581 | : param filename: name of the file to write |
---|
582 | : param datainfo: Data1D object |
---|
583 | : param invstate: InvariantState object |
---|
584 | """ |
---|
585 | |
---|
586 | # Sanity check |
---|
587 | if self.cansas == True: |
---|
588 | if datainfo is None: |
---|
589 | datainfo = DataLoader.data_info.Data1D(x=[], y=[]) |
---|
590 | elif not issubclass(datainfo.__class__, DataLoader.data_info.Data1D): |
---|
591 | raise RuntimeError, "The cansas writer expects a Data1D instance: %s" % str(datainfo.__class__.__name__) |
---|
592 | |
---|
593 | # Create basic XML document |
---|
594 | doc, sasentry = self._to_xml_doc(datainfo) |
---|
595 | |
---|
596 | # Add the invariant information to the XML document |
---|
597 | if invstate is not None: |
---|
598 | invstate.toXML(doc=doc, entry_node=sasentry) |
---|
599 | |
---|
600 | # Write the XML document |
---|
601 | fd = open(filename, 'w') |
---|
602 | fd.write(doc.toprettyxml()) |
---|
603 | fd.close() |
---|
604 | else: |
---|
605 | invstate.toXML(file=filename) |
---|
606 | |
---|
607 | |
---|
608 | |
---|