Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/rdflib/plugins/serializers/xmlwriter.py @ 3:758bc20232e8 draft

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
"planemo upload commit 2a0fe2cc28b09e101d37293e53e82f61762262ec"
author shellac
date Thu, 14 May 2020 16:20:52 -0400
parents 26e78fe6e8c4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0
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1 import codecs
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2 from xml.sax.saxutils import quoteattr, escape
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3
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4 __all__ = ['XMLWriter']
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5
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6 ESCAPE_ENTITIES = {
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7 '\r': '
'
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8 }
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9
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10
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11 class XMLWriter(object):
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12 def __init__(self, stream, namespace_manager, encoding=None,
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13 decl=1, extra_ns=None):
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14 encoding = encoding or 'utf-8'
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15 encoder, decoder, stream_reader, stream_writer = \
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16 codecs.lookup(encoding)
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17 self.stream = stream = stream_writer(stream)
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18 if decl:
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19 stream.write('<?xml version="1.0" encoding="%s"?>' % encoding)
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20 self.element_stack = []
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21 self.nm = namespace_manager
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22 self.extra_ns = extra_ns or {}
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23 self.closed = True
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24
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25 def __get_indent(self):
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26 return " " * len(self.element_stack)
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27 indent = property(__get_indent)
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28
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29 def __close_start_tag(self):
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30 if not self.closed: # TODO:
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31 self.closed = True
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32 self.stream.write(">")
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33
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34 def push(self, uri):
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35 self.__close_start_tag()
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36 write = self.stream.write
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37 write("\n")
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38 write(self.indent)
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39 write("<%s" % self.qname(uri))
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40 self.element_stack.append(uri)
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41 self.closed = False
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42 self.parent = False
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43
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44 def pop(self, uri=None):
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45 top = self.element_stack.pop()
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46 if uri:
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47 assert uri == top
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48 write = self.stream.write
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49 if not self.closed:
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50 self.closed = True
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51 write("/>")
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52 else:
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53 if self.parent:
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54 write("\n")
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55 write(self.indent)
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56 write("</%s>" % self.qname(top))
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57 self.parent = True
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58
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59 def element(self, uri, content, attributes={}):
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60 """Utility method for adding a complete simple element"""
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61 self.push(uri)
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62 for k, v in attributes.items():
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63 self.attribute(k, v)
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64 self.text(content)
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65 self.pop()
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66
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67 def namespaces(self, namespaces=None):
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68 if not namespaces:
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69 namespaces = self.nm.namespaces()
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70
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71 write = self.stream.write
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72 write("\n")
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73 for prefix, namespace in namespaces:
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74 if prefix:
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75 write(' xmlns:%s="%s"\n' % (prefix, namespace))
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76 # Allow user-provided namespace bindings to prevail
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77 elif prefix not in self.extra_ns:
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78 write(' xmlns="%s"\n' % namespace)
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79
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80 for prefix, namespace in list(self.extra_ns.items()):
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81 if prefix:
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82 write(' xmlns:%s="%s"\n' % (prefix, namespace))
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83 else:
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84 write(' xmlns="%s"\n' % namespace)
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85
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86 def attribute(self, uri, value):
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87 write = self.stream.write
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88 write(" %s=%s" % (self.qname(uri), quoteattr(value)))
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89
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90 def text(self, text):
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91 self.__close_start_tag()
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92 if "<" in text and ">" in text and not "]]>" in text:
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93 self.stream.write("<![CDATA[")
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94 self.stream.write(text)
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95 self.stream.write("]]>")
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96 else:
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97 self.stream.write(escape(text, ESCAPE_ENTITIES))
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98
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99 def qname(self, uri):
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100 """Compute qname for a uri using our extra namespaces,
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101 or the given namespace manager"""
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102
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103 for pre, ns in list(self.extra_ns.items()):
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104 if uri.startswith(ns):
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105 if pre != "":
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106 return ":".join(pre, uri[len(ns):])
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107 else:
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108 return uri[len(ns):]
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109
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110 return self.nm.qname(uri)