Changeset 2e3b055 in sasview for src/sans/dataloader/readers
- Timestamp:
- Apr 16, 2014 11:50:31 AM (11 years ago)
- Branches:
- master, ESS_GUI, ESS_GUI_Docs, ESS_GUI_batch_fitting, ESS_GUI_bumps_abstraction, ESS_GUI_iss1116, ESS_GUI_iss879, ESS_GUI_iss959, ESS_GUI_opencl, ESS_GUI_ordering, ESS_GUI_sync_sascalc, costrafo411, magnetic_scatt, release-4.1.1, release-4.1.2, release-4.2.2, release_4.0.1, ticket-1009, ticket-1094-headless, ticket-1242-2d-resolution, ticket-1243, ticket-1249, ticket885, unittest-saveload
- Children:
- b8de7fb
- Parents:
- d4117ccb
- Location:
- src/sans/dataloader/readers
- Files:
-
- 2 edited
Legend:
- Unmodified
- Added
- Removed
-
src/sans/dataloader/readers/cansas_reader.py
r9e2bc6c r2e3b055 25 25 from sans.dataloader.data_info import Aperture 26 26 import sans.dataloader.readers.xml_reader as xml_reader 27 import xml.dom.minidom28 27 from sans.dataloader.readers.cansas_constants import cansasConstants 29 28 30 29 _ZERO = 1e-16 31 30 PREPROCESS = "xmlpreprocess" 31 ENCODING = "encoding" 32 32 HAS_CONVERTER = True 33 33 try: … … 83 83 84 84 85 # This is called by sans.perspectives.fitting.pagestate.py 86 # Do not remove 85 87 def write_node(doc, parent, name, value, attr={}): 86 88 """ … … 113 115 cansas_version = "1.0" 114 116 ##Data reader 117 # TODO: make the reader extend the XMLreader class? 115 118 reader = xml_reader.XMLreader() 116 119 errors = [] … … 135 138 """ 136 139 if self.reader.validateXML(): 137 xmlns = self.reader.xmlroot.keys() 140 name = "{http://www.w3.org/2001/XMLSchema-instance}schemaLocation" 141 value = self.reader.xmlroot.get(name) 138 142 if (CANSAS_NS.get(self.cansas_version).get("ns") == \ 139 self.reader.xmlroot.get(xmlns[1]).rsplit(" ")[0]):143 value.rsplit(" ")[0]): 140 144 return True 141 145 return False … … 184 188 # Link a schema to the XML file. 185 189 self.reader.setSchema(schema_path) 186 190 187 191 # Try to load the file, but raise an error if unable to. 188 192 # Check the file matches the XML schema … … 215 219 data1d.meta_data["loader"] = "CanSAS 1D" 216 220 217 # Get all preprocessing events 221 # Get all preprocessing events and encoding 218 222 self.reader.setProcessingInstructions() 219 223 data1d.meta_data[PREPROCESS] = \ … … 521 525 raise RuntimeError, "The cansas writer expects a Data1D instance" 522 526 523 ns = CANSAS_NS.get(self.cansas_version).get("ns") 524 doc = xml.dom.minidom.Document() 525 526 main_node = doc.createElement("SASroot") 527 528 doc = self.setProcessingInstructions(doc, \ 529 datainfo.meta_data.get(PREPROCESS, {})) 530 main_node.setAttribute("version", self.cansas_version) 531 main_node.setAttribute("xmlns", ns) 532 main_node.setAttribute("xmlns:xsi", 533 "http://www.w3.org/2001/XMLSchema-instance") 534 if self.cansas_version == "1.0": 535 main_node.setAttribute("xsi:schemaLocation", "cansas1d/1.0 http://svn.smallangles.net/svn/canSAS/1dwg/trunk/cansas1d.xsd") 536 elif self.cansas_version == "1.1": 537 main_node.setAttribute("xsi:schemaLocation", "urn:cansas1d:1.1 http://www.cansas.org/formats/1.1/cansas1d.xsd") 538 539 doc.appendChild(main_node) 540 541 entry_node = doc.createElement("SASentry") 542 main_node.appendChild(entry_node) 543 544 write_node(doc, entry_node, "Title", datainfo.title) 527 # Get PIs and create root element 528 pis = self.reader.return_processing_instructions() 529 doc = self.reader.create_tree(pis[0]) 530 i = 1 531 for i in range(1,len(pis) - 1): 532 doc = self.reader.append(pis[i], doc) 533 534 # Define namespaces and create SASroot object 535 xsi = "http://www.w3.org/2001/XMLSchema-instance" 536 version = self.cansas_version 537 ns = CANSAS_NS.get(version).get("ns") 538 if version == "1.1": 539 url = "http://www.cansas.org/formats/1.1/" 540 else: 541 url = "http://svn.smallangles.net/svn/canSAS/1dwg/trunk/" 542 schemaLocation = "{0} {1}cansas1d.xsd".format(ns, url) 543 attrib = {"{" + xsi + "}schemaLocation" : schemaLocation, 544 "version" : version} 545 nsmap = {'xsi' : xsi, None: ns} 546 547 main_node = self.reader.create_element("{" + ns + "}SASroot", \ 548 attrib = attrib, \ 549 nsmap = nsmap) 550 551 # Create ElementTree, append SASroot and apply processing instructions 552 base_string = self.reader.toString(doc) + \ 553 self.reader.toString(main_node) 554 base_element = self.reader.create_element_from_string(base_string) 555 doc = self.reader.create_tree(base_element) 556 557 # Create SASentry Element 558 entry_node = self.reader.create_element("SASentry") 559 root = doc.getroot() 560 root.append(entry_node) 561 562 # Add Title to SASentry 563 self.write_node(entry_node, "Title", datainfo.title) 564 565 # Add Run to SASentry 545 566 if datainfo.run == None or datainfo.run == []: 546 567 RUN_NAME_DEFAULT = "None" … … 552 573 len(str(datainfo.run_name[item])) > 1: 553 574 runname = {'name': datainfo.run_name[item]} 554 write_node(doc,entry_node, "Run", item, runname)575 self.write_node(entry_node, "Run", item, runname) 555 576 556 577 # Data info 557 node = doc.createElement("SASdata")558 entry_node.appendChild(node)578 node = self.reader.create_element("SASdata") 579 self.reader.append(node, entry_node) 559 580 560 581 for i in range(len(datainfo.x)): 561 pt = doc.createElement("Idata")562 node.append Child(pt)563 write_node(doc,pt, "Q", datainfo.x[i], {'unit': datainfo.x_unit})582 pt = self.reader.create_element("Idata") 583 node.append(pt) 584 self.write_node(pt, "Q", datainfo.x[i], {'unit': datainfo.x_unit}) 564 585 if len(datainfo.y) >= i: 565 write_node(doc,pt, "I", datainfo.y[i],586 self.write_node(pt, "I", datainfo.y[i], 566 587 {'unit': datainfo.y_unit}) 567 588 if datainfo.dy != None and len(datainfo.dy) > i: 568 write_node(doc,pt, "Idev", datainfo.dy[i],589 self.write_node(pt, "Idev", datainfo.dy[i], 569 590 {'unit': datainfo.y_unit}) 570 591 if datainfo.dx != None and len(datainfo.dx) > i: 571 write_node(doc,pt, "Qdev", datainfo.dx[i],592 self.write_node(pt, "Qdev", datainfo.dx[i], 572 593 {'unit': datainfo.x_unit}) 573 594 if datainfo.dxw != None and len(datainfo.dxw) > i: 574 write_node(doc,pt, "dQw", datainfo.dxw[i],595 self.write_node(pt, "dQw", datainfo.dxw[i], 575 596 {'unit': datainfo.x_unit}) 576 597 if datainfo.dxl != None and len(datainfo.dxl) > i: 577 write_node(doc,pt, "dQl", datainfo.dxl[i],598 self.write_node(pt, "dQl", datainfo.dxl[i], 578 599 {'unit': datainfo.x_unit}) 579 600 … … 581 602 for i in range(len(datainfo.trans_spectrum)): 582 603 spectrum = datainfo.trans_spectrum[i] 583 node = doc.createElement("SAStransmission_spectrum") 584 node.setAttribute("name", spectrum.name) 604 node = self.reader.create_element("SAStransmission_spectrum", 605 {"name" : spectrum.name}) 606 self.reader.append(node, entry_node) 585 607 if isinstance(spectrum.timestamp, datetime.datetime): 586 608 node.setAttribute("timestamp", spectrum.timestamp) 587 entry_node.appendChild(node)588 609 for i in range(len(spectrum.wavelength)): 589 pt = doc.createElement("Tdata")590 node.append Child(pt)591 write_node(doc,pt, "Lambda", spectrum.wavelength[i],610 pt = self.reader.create_element("Tdata") 611 node.append(pt) 612 self.write_node(pt, "Lambda", spectrum.wavelength[i], 592 613 {'unit': spectrum.wavelength_unit}) 593 write_node(doc,pt, "T", spectrum.transmission[i],614 self.write_node(pt, "T", spectrum.transmission[i], 594 615 {'unit': spectrum.transmission_unit}) 595 616 if spectrum.transmission_deviation != None \ 596 617 and len(spectrum.transmission_deviation) >= i: 597 write_node(doc,pt, "Tdev", \618 self.write_node(pt, "Tdev", \ 598 619 spectrum.transmission_deviation[i], \ 599 620 {'unit': spectrum.transmission_deviation_unit}) 600 621 601 622 # Sample info 602 sample = doc.createElement("SASsample")623 sample = self.reader.create_element("SASsample") 603 624 if datainfo.sample.name is not None: 604 sample.setAttribute("name", str(datainfo.sample.name)) 605 entry_node.appendChild(sample) 606 write_node(doc, sample, "ID", str(datainfo.sample.ID)) 607 write_node(doc, sample, "thickness", datainfo.sample.thickness, 625 self.reader.write_attribute(sample, 626 "name", 627 str(datainfo.sample.name)) 628 self.reader.append(sample, entry_node) 629 self.write_node(sample, "ID", str(datainfo.sample.ID)) 630 self.write_node(sample, "thickness", datainfo.sample.thickness, 608 631 {"unit": datainfo.sample.thickness_unit}) 609 write_node(doc,sample, "transmission", datainfo.sample.transmission)610 write_node(doc,sample, "temperature", datainfo.sample.temperature,632 self.write_node(sample, "transmission", datainfo.sample.transmission) 633 self.write_node(sample, "temperature", datainfo.sample.temperature, 611 634 {"unit": datainfo.sample.temperature_unit}) 612 635 613 pos = doc.createElement("position") 614 written = write_node(doc, pos, "x", datainfo.sample.position.x, 615 {"unit": datainfo.sample.position_unit}) 616 written = written | write_node(doc, pos, "y", 617 datainfo.sample.position.y, 636 pos = self.reader.create_element("position") 637 written = self.write_node(pos, 638 "x", 639 datainfo.sample.position.x, 640 {"unit": datainfo.sample.position_unit}) 641 written = written | self.write_node(pos, 642 "y", 643 datainfo.sample.position.y, 618 644 {"unit": datainfo.sample.position_unit}) 619 written = written | write_node(doc, pos, "z", 620 datainfo.sample.position.z, 645 written = written | self.write_node(pos, 646 "z", 647 datainfo.sample.position.z, 621 648 {"unit": datainfo.sample.position_unit}) 622 649 if written == True: 623 s ample.appendChild(pos)624 625 ori = doc.createElement("orientation")626 written = write_node(doc,ori, "roll",627 datainfo.sample.orientation.x,628 {"unit": datainfo.sample.orientation_unit})629 written = written | write_node(doc,ori, "pitch",650 self.reader.append(pos, sample) 651 652 ori = self.reader.create_element("orientation") 653 written = self.write_node(ori, "roll", 654 datainfo.sample.orientation.x, 655 {"unit": datainfo.sample.orientation_unit}) 656 written = written | self.write_node(ori, "pitch", 630 657 datainfo.sample.orientation.y, 631 658 {"unit": datainfo.sample.orientation_unit}) 632 written = written | write_node(doc,ori, "yaw",659 written = written | self.write_node(ori, "yaw", 633 660 datainfo.sample.orientation.z, 634 661 {"unit": datainfo.sample.orientation_unit}) 635 662 if written == True: 636 s ample.appendChild(ori)663 self.reader.append(ori, sample) 637 664 638 665 for item in datainfo.sample.details: 639 write_node(doc,sample, "details", item)666 self.write_node(sample, "details", item) 640 667 641 668 # Instrument info 642 instr = doc.createElement("SASinstrument")643 entry_node.appendChild(instr)644 645 write_node(doc,instr, "name", datainfo.instrument)669 instr = self.reader.create_element("SASinstrument") 670 self.reader.append(instr, entry_node) 671 672 self.write_node(instr, "name", datainfo.instrument) 646 673 647 674 # Source 648 source = doc.createElement("SASsource")675 source = self.reader.create_element("SASsource") 649 676 if datainfo.source.name is not None: 650 source.setAttribute("name", str(datainfo.source.name)) 651 instr.appendChild(source) 677 self.reader.write_attribute(source, 678 "name", 679 str(datainfo.source.name)) 680 self.reader.append(source, instr) 652 681 if datainfo.source.radiation == None or datainfo.source.radiation == '': 653 682 datainfo.source.radiation = "neutron" 654 write_node(doc,source, "radiation", datainfo.source.radiation)655 656 size = doc.createElement("beam_size")683 self.write_node(source, "radiation", datainfo.source.radiation) 684 685 size = self.reader.create_element("beam_size") 657 686 if datainfo.source.beam_size_name is not None: 658 size.setAttribute("name", str(datainfo.source.beam_size_name)) 659 written = write_node(doc, size, "x", datainfo.source.beam_size.x, 687 self.reader.write_attribute(size, 688 "name", 689 str(datainfo.source.beam_size_name)) 690 written = self.write_node(size, "x", datainfo.source.beam_size.x, 660 691 {"unit": datainfo.source.beam_size_unit}) 661 written = written | write_node(doc,size, "y",692 written = written | self.write_node(size, "y", 662 693 datainfo.source.beam_size.y, 663 694 {"unit": datainfo.source.beam_size_unit}) 664 written = written | write_node(doc,size, "z",695 written = written | self.write_node(size, "z", 665 696 datainfo.source.beam_size.z, 666 697 {"unit": datainfo.source.beam_size_unit}) 667 698 if written == True: 668 s ource.appendChild(size)699 self.reader.append(size, source) 669 700 670 write_node(doc,source, "beam_shape", datainfo.source.beam_shape)671 write_node(doc,source, "wavelength",701 self.write_node(source, "beam_shape", datainfo.source.beam_shape) 702 self.write_node(source, "wavelength", 672 703 datainfo.source.wavelength, 673 704 {"unit": datainfo.source.wavelength_unit}) 674 write_node(doc,source, "wavelength_min",705 self.write_node(source, "wavelength_min", 675 706 datainfo.source.wavelength_min, 676 707 {"unit": datainfo.source.wavelength_min_unit}) 677 write_node(doc,source, "wavelength_max",708 self.write_node(source, "wavelength_max", 678 709 datainfo.source.wavelength_max, 679 710 {"unit": datainfo.source.wavelength_max_unit}) 680 write_node(doc,source, "wavelength_spread",711 self.write_node(source, "wavelength_spread", 681 712 datainfo.source.wavelength_spread, 682 713 {"unit": datainfo.source.wavelength_spread_unit}) … … 687 718 datainfo.collimation.append(coll) 688 719 for item in datainfo.collimation: 689 coll = doc.createElement("SAScollimation")720 coll = self.reader.create_element("SAScollimation") 690 721 if item.name is not None: 691 coll.setAttribute("name", str(item.name))692 instr.appendChild(coll)722 self.reader.write_attribute(coll, "name", str(item.name)) 723 self.reader.append(coll, instr) 693 724 694 write_node(doc,coll, "length", item.length,725 self.write_node(coll, "length", item.length, 695 726 {"unit": item.length_unit}) 696 727 697 728 for apert in item.aperture: 698 ap = doc.createElement("aperture")729 ap = self.reader.create_element("aperture") 699 730 if apert.name is not None: 700 ap.setAttribute("name", str(apert.name))731 self.reader.write_attribute(ap, "name", str(apert.name)) 701 732 if apert.type is not None: 702 ap.setAttribute("type", str(apert.type))703 coll.appendChild(ap)704 705 size = doc.createElement("size")733 self.reader.write_attribute(ap, "type", str(apert.type)) 734 self.reader.append(ap, coll) 735 736 size = self.reader.create_element("size") 706 737 if apert.size_name is not None: 707 size.setAttribute("name", str(apert.size_name)) 708 written = write_node(doc, size, "x", apert.size.x, 738 self.reader.write_attribute(size, 739 "name", 740 str(apert.size_name)) 741 written = self.write_node(size, "x", apert.size.x, 709 742 {"unit": apert.size_unit}) 710 written = written | write_node(doc,size, "y", apert.size.y,743 written = written | self.write_node(size, "y", apert.size.y, 711 744 {"unit": apert.size_unit}) 712 written = written | write_node(doc,size, "z", apert.size.z,745 written = written | self.write_node(size, "z", apert.size.z, 713 746 {"unit": apert.size_unit}) 714 747 if written == True: 715 ap.appendChild(size)716 717 write_node(doc,ap, "distance", apert.distance,748 self.reader.append(size, ap) 749 750 self.write_node(ap, "distance", apert.distance, 718 751 {"unit": apert.distance_unit}) 719 752 … … 725 758 726 759 for item in datainfo.detector: 727 det = doc.createElement("SASdetector")728 written = write_node(doc,det, "name", item.name)729 written = written | write_node(doc,det, "SDD", item.distance,760 det = self.reader.create_element("SASdetector") 761 written = self.write_node(det, "name", item.name) 762 written = written | self.write_node(det, "SDD", item.distance, 730 763 {"unit": item.distance_unit}) 731 764 if written == True: 732 instr.appendChild(det)765 self.reader.append(det, instr) 733 766 734 off = doc.createElement("offset")735 written = write_node(doc,off, "x", item.offset.x,767 off = self.reader.create_element("offset") 768 written = self.write_node(off, "x", item.offset.x, 736 769 {"unit": item.offset_unit}) 737 written = written | write_node(doc,off, "y", item.offset.y,770 written = written | self.write_node(off, "y", item.offset.y, 738 771 {"unit": item.offset_unit}) 739 written = written | write_node(doc,off, "z", item.offset.z,772 written = written | self.write_node(off, "z", item.offset.z, 740 773 {"unit": item.offset_unit}) 741 774 if written == True: 742 det.appendChild(off)743 744 ori = doc.createElement("orientation")745 written = write_node(doc,ori, "roll", item.orientation.x,775 self.reader.append(off, det) 776 777 ori = self.reader.create_element("orientation") 778 written = self.write_node(ori, "roll", item.orientation.x, 746 779 {"unit": item.orientation_unit}) 747 written = written | write_node(doc,ori, "pitch",780 written = written | self.write_node(ori, "pitch", 748 781 item.orientation.y, 749 782 {"unit": item.orientation_unit}) 750 written = written | write_node(doc,ori, "yaw",783 written = written | self.write_node(ori, "yaw", 751 784 item.orientation.z, 752 785 {"unit": item.orientation_unit}) 753 786 if written == True: 754 det.appendChild(ori)787 self.reader.append(ori, det) 755 788 756 center = doc.createElement("beam_center")757 written = write_node(doc,center, "x", item.beam_center.x,789 center = self.reader.create_element("beam_center") 790 written = self.write_node(center, "x", item.beam_center.x, 758 791 {"unit": item.beam_center_unit}) 759 written = written | write_node(doc,center, "y",792 written = written | self.write_node(center, "y", 760 793 item.beam_center.y, 761 794 {"unit": item.beam_center_unit}) 762 written = written | write_node(doc,center, "z",795 written = written | self.write_node(center, "z", 763 796 item.beam_center.z, 764 797 {"unit": item.beam_center_unit}) 765 798 if written == True: 766 det.appendChild(center)767 768 pix = doc.createElement("pixel_size")769 written = write_node(doc,pix, "x", item.pixel_size.x,799 self.reader.append(center, det) 800 801 pix = self.reader.create_element("pixel_size") 802 written = self.write_node(pix, "x", item.pixel_size.x, 770 803 {"unit": item.pixel_size_unit}) 771 written = written | write_node(doc,pix, "y", item.pixel_size.y,804 written = written | self.write_node(pix, "y", item.pixel_size.y, 772 805 {"unit": item.pixel_size_unit}) 773 written = written | write_node(doc,pix, "z", item.pixel_size.z,806 written = written | self.write_node(pix, "z", item.pixel_size.z, 774 807 {"unit": item.pixel_size_unit}) 775 if written == True: 776 det.appendChild(pix) 777 written = written | write_node(doc, det, "slit_length", 808 written = written | self.write_node(det, "slit_length", 778 809 item.slit_length, 779 810 {"unit": item.slit_length_unit}) 811 if written == True: 812 self.reader.append(pix, det) 780 813 781 814 # Processes info 782 815 for item in datainfo.process: 783 node = doc.createElement("SASprocess")784 entry_node.appendChild(node)785 786 write_node(doc,node, "name", item.name)787 write_node(doc,node, "date", item.date)788 write_node(doc,node, "description", item.description)816 node = self.reader.create_element("SASprocess") 817 self.reader.append(node, entry_node) 818 819 self.write_node(node, "name", item.name) 820 self.write_node(node, "date", item.date) 821 self.write_node(node, "description", item.description) 789 822 for term in item.term: 790 823 value = term['value'] 791 824 del term['value'] 792 write_node(doc,node, "term", value, term)825 self.write_node(node, "term", value, term) 793 826 for note in item.notes: 794 write_node(doc,node, "SASprocessnote", note)827 self.write_node(node, "SASprocessnote", note) 795 828 if len(item.notes) == 0: 796 write_node(doc,node, "SASprocessnote", "")829 self.write_node(node, "SASprocessnote", "") 797 830 798 831 # Note info 799 832 if len(datainfo.notes) == 0: 800 node = doc.createElement("SASnote") 801 entry_node.appendChild(node) 802 if node.hasChildNodes(): 803 for child in node.childNodes: 804 node.removeChild(child) 833 node = self.reader.create_element("SASnote") 834 self.reader.append(node, entry_node) 805 835 else: 806 836 for item in datainfo.notes: 807 node = doc.createElement("SASnote") 808 entry_node.appendChild(node) 809 node.appendChild(doc.createTextNode(item)) 810 837 node = self.reader.create_element("SASnote") 838 self.reader.write_text(node, item) 839 self.reader.append(node, entry_node) 840 841 811 842 # Return the document, and the SASentry node associated with 812 843 # the data we just wrote 813 844 return doc, entry_node 845 846 847 def write_node(self, parent, name, value, attr={}): 848 """ 849 :param doc: document DOM 850 :param parent: parent node 851 :param name: tag of the element 852 :param value: value of the child text node 853 :param attr: attribute dictionary 854 855 :return: True if something was appended, otherwise False 856 """ 857 if value is not None: 858 parent = self.reader.ebuilder(parent, name, value, attr) 859 return True 860 return False 861 814 862 815 863 def write(self, filename, datainfo): … … 824 872 # Write the file 825 873 fd = open(filename, 'w') 826 fd.write(doc.toprettyxml()) 874 if self.reader.encoding == None: 875 self.reader.encoding = "UTF-8" 876 doc.write(fd, encoding=self.reader.encoding, 877 pretty_print=True, xml_declaration=True) 827 878 fd.close() 828 879 829 ## Once I convert the writer to lxml from minidom830 ## This can be moved into xml_reader831 def setProcessingInstructions(self, minidomObject, dic):832 xmlroot = minidomObject.firstChild833 for item in dic:834 pi = minidomObject.createProcessingInstruction(item, dic[item])835 minidomObject.insertBefore(pi, xmlroot)836 return minidomObject837 -
src/sans/dataloader/readers/xml_reader.py
rf44b076 r2e3b055 1 1 """ 2 Generic XML reader 2 Generic XML read and write utility 3 4 Usage: Either extend xml_reader or add as a class variable. 3 5 """ 4 6 ############################################################################ … … 14 16 15 17 from lxml import etree 18 from lxml.builder import E 16 19 parser = etree.ETCompatXMLParser(remove_comments=True, remove_pis=False) 17 20 … … 23 26 schema = None 24 27 schemadoc = None 28 encoding = None 25 29 processingInstructions = None 26 30 … … 104 108 self.setSchema(self.schema) 105 109 106 def toString(self, etreeElement): 107 """ 108 Converts and etree element into a string 109 """ 110 return etree.tostring(etreeElement) 110 def toString(self, elem, pp=False, encoding=None): 111 """ 112 Converts an etree element into a string 113 """ 114 return etree.tostring(elem, pretty_print = pp, encoding = encoding) 115 116 def break_processing_instructions(self, string, dic): 117 """ 118 Method to break a processing instruction string apart and add to a dict 119 120 :param string: A processing instruction as a string 121 :param dic: The dictionary to save the PIs to 122 """ 123 pi_string = string.replace("<?", "").replace("?>", "") 124 split = pi_string.split(" ", 1) 125 pi_name = split[0] 126 attr = split[1] 127 new_pi_name = self._create_unique_key(dic, pi_name) 128 dic[new_pi_name] = attr 129 return dic 111 130 112 131 def setProcessingInstructions(self): 113 132 """ 114 133 Take out all processing instructions and create a dictionary from them 134 If there is a default encoding, the value is also saved 115 135 """ 116 136 dic = {} 117 137 pi = self.xmlroot.getprevious() 118 138 while pi is not None: 119 attr = {}120 pi_name = ""121 139 pi_string = self.toString(pi) 140 if "?>\n<?" in pi_string: 141 pi_string = pi_string.split("?>\n<?") 122 142 if isinstance(pi_string, str): 123 pi_string = pi_string.replace("<?", "").replace("?>", "") 124 split = pi_string.split(" ", 1) 125 pi_name = split[0] 126 attr = split[1] 127 new_pi_name = self._create_unique_key(dic, pi_name) 128 dic[new_pi_name] = attr 143 dic = self.break_processing_instructions(pi_string, dic) 144 elif isinstance(pi_string, list): 145 for item in pi_string: 146 dic = self.break_processing_instructions(item, dic) 129 147 pi = pi.getprevious() 148 if 'xml' in dic: 149 self.setEncoding(dic['xml']) 150 del dic['xml'] 130 151 self.processingInstructions = dic 152 153 def setEncoding(self, attr_str): 154 """ 155 Find the encoding in the xml declaration and save it as a string 156 157 :param attr_str: All attributes as a string 158 e.g. "foo1="bar1" foo2="bar2" foo3="bar3" ... foo_n="bar_n"" 159 """ 160 attr_str = attr_str.replace(" = ", "=") 161 attr_list = attr_str.split( ) 162 for item in attr_list: 163 name_value = item.split("\"=") 164 name = name_value[0].lower() 165 value = name_value[1] 166 if name == "encoding": 167 self.encoding = value 168 return 169 self.encoding = None 131 170 132 171 def _create_unique_key(self, dictionary, name, i = 0): … … 148 187 def create_tree(self, root): 149 188 """ 150 Create an element tree for processing from an XML string151 152 :param root: XML string189 Create an element tree for processing from an etree element 190 191 :param root: etree Element(s) 153 192 """ 154 193 return etree.ElementTree(root) 155 194 156 def create_element(self, name): 195 def create_element_from_string(self, s): 196 """ 197 Create an element from an XML string 198 199 :param s: A string of xml 200 """ 201 return etree.fromstring(s) 202 203 def create_element(self, name, attrib={}, nsmap=None): 157 204 """ 158 205 Create an XML element for writing to file … … 160 207 :param name: The name of the element to be created 161 208 """ 162 return etree.Element(name )209 return etree.Element(name, attrib, nsmap) 163 210 164 211 def write_text(self, elem, text): … … 183 230 attr[attr_name] = attr_value 184 231 232 def return_processing_instructions(self): 233 """ 234 Get all processing instructions saved when loading the document 235 236 :param tree: etree.ElementTree object to write PIs to 237 """ 238 pi_list = [] 239 for key in self.processingInstructions: 240 value = self.processingInstructions.get(key) 241 pi = etree.ProcessingInstruction(key, value) 242 pi_list.append(pi) 243 return pi_list 244 245 def append(self, element, tree): 246 """ 247 Append an etree Element to an ElementTree. 248 249 :param element: etree Element to append 250 :param tree: ElementTree object to append to 251 """ 252 tree = tree.append(element) 253 return tree 254 255 def ebuilder(self, parent, elementname, text=None, attrib={}): 256 text = str(text) 257 elem = E(elementname, attrib, text) 258 parent = parent.append(elem) 259 return parent 260
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