Mercurial > p > roundup > code
annotate roundup/cgi/TAL/TALParser.py @ 7037:22183e7d1443
flake8 whitepace, indents, var names
address:
B007 Loop control variable 'id' not used within the loop body. If this is intended, start the name with an underscore.
E122 continuation line missing indentation or outdented
E127 continuation line over-indented for visual indent
E128 continuation line under-indented for visual indent
E129 visually indented line with same indent as next logical line
E701 multiple statements on one line (colon)
E703 statement ends with a semicolon
E741 ambiguous variable name 'l'
| author | John Rouillard <rouilj@ieee.org> |
|---|---|
| date | Mon, 10 Oct 2022 15:43:13 -0400 |
| parents | 23b8e6067f7c |
| children |
| rev | line source |
|---|---|
| 1049 | 1 ############################################################################## |
| 2 # | |
| 3 # Copyright (c) 2001, 2002 Zope Corporation and Contributors. | |
| 4 # All Rights Reserved. | |
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5 # |
| 1049 | 6 # This software is subject to the provisions of the Zope Public License, |
| 7 # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution. | |
| 8 # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED | |
| 9 # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 10 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS | |
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11 # FOR A PARTICULAR PURPOSE. |
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12 # |
| 1049 | 13 ############################################################################## |
| 14 """ | |
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15 Parse XML and compile to TALInterpreter intermediate code. |
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16 """ |
| 1049 | 17 |
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18 from .XMLParser import XMLParser |
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19 from .TALDefs import XML_NS, ZOPE_I18N_NS, ZOPE_METAL_NS, ZOPE_TAL_NS |
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20 from .TALGenerator import TALGenerator |
| 1049 | 21 |
| 22 class TALParser(XMLParser): | |
| 23 | |
| 24 ordered_attributes = 1 | |
| 25 | |
| 26 def __init__(self, gen=None): # Override | |
| 27 XMLParser.__init__(self) | |
| 28 if gen is None: | |
| 29 gen = TALGenerator() | |
| 30 self.gen = gen | |
| 31 self.nsStack = [] | |
| 32 self.nsDict = {XML_NS: 'xml'} | |
| 33 self.nsNew = [] | |
| 34 | |
| 35 def getCode(self): | |
| 36 return self.gen.getCode() | |
| 37 | |
| 38 def getWarnings(self): | |
| 39 return () | |
| 40 | |
| 41 def StartNamespaceDeclHandler(self, prefix, uri): | |
| 42 self.nsStack.append(self.nsDict.copy()) | |
| 43 self.nsDict[uri] = prefix | |
| 44 self.nsNew.append((prefix, uri)) | |
| 45 | |
| 46 def EndNamespaceDeclHandler(self, prefix): | |
| 47 self.nsDict = self.nsStack.pop() | |
| 48 | |
| 49 def StartElementHandler(self, name, attrs): | |
| 50 if self.ordered_attributes: | |
| 51 # attrs is a list of alternating names and values | |
| 52 attrlist = [] | |
| 53 for i in range(0, len(attrs), 2): | |
| 54 key = attrs[i] | |
| 55 value = attrs[i+1] | |
| 56 attrlist.append((key, value)) | |
| 57 else: | |
| 58 # attrs is a dict of {name: value} | |
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59 attrlist = sorted(attrs.items()) # Sorted for definiteness |
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60 name, attrlist, taldict, metaldict, i18ndict \ |
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61 = self.process_ns(name, attrlist) |
| 1049 | 62 attrlist = self.xmlnsattrs() + attrlist |
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63 self.gen.emitStartElement(name, attrlist, taldict, metaldict, i18ndict) |
| 1049 | 64 |
| 65 def process_ns(self, name, attrlist): | |
| 66 taldict = {} | |
| 67 metaldict = {} | |
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68 i18ndict = {} |
| 1049 | 69 fixedattrlist = [] |
| 70 name, namebase, namens = self.fixname(name) | |
| 71 for key, value in attrlist: | |
| 72 key, keybase, keyns = self.fixname(key) | |
| 73 ns = keyns or namens # default to tag namespace | |
| 74 item = key, value | |
| 75 if ns == 'metal': | |
| 76 metaldict[keybase] = value | |
| 77 item = item + ("metal",) | |
| 78 elif ns == 'tal': | |
| 79 taldict[keybase] = value | |
| 80 item = item + ("tal",) | |
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81 elif ns == 'i18n': |
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82 assert 0, "dealing with i18n: " + repr((keybase, value)) |
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83 i18ndict[keybase] = value |
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84 item = item + ('i18n',) |
| 1049 | 85 fixedattrlist.append(item) |
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86 if namens in ('metal', 'tal', 'i18n'): |
| 1049 | 87 taldict['tal tag'] = namens |
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88 return name, fixedattrlist, taldict, metaldict, i18ndict |
| 1049 | 89 |
| 90 def xmlnsattrs(self): | |
| 91 newlist = [] | |
| 92 for prefix, uri in self.nsNew: | |
| 93 if prefix: | |
| 94 key = "xmlns:" + prefix | |
| 95 else: | |
| 96 key = "xmlns" | |
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97 if uri in (ZOPE_METAL_NS, ZOPE_TAL_NS, ZOPE_I18N_NS): |
| 1049 | 98 item = (key, uri, "xmlns") |
| 99 else: | |
| 100 item = (key, uri) | |
| 101 newlist.append(item) | |
| 102 self.nsNew = [] | |
| 103 return newlist | |
| 104 | |
| 105 def fixname(self, name): | |
| 106 if ' ' in name: | |
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107 uri, name = name.split(' ') |
| 1049 | 108 prefix = self.nsDict[uri] |
| 109 prefixed = name | |
| 110 if prefix: | |
| 111 prefixed = "%s:%s" % (prefix, name) | |
| 112 ns = 'x' | |
| 113 if uri == ZOPE_TAL_NS: | |
| 114 ns = 'tal' | |
| 115 elif uri == ZOPE_METAL_NS: | |
| 116 ns = 'metal' | |
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117 elif uri == ZOPE_I18N_NS: |
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parents:
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118 ns = 'i18n' |
| 1049 | 119 return (prefixed, name, ns) |
| 120 return (name, name, None) | |
| 121 | |
| 122 def EndElementHandler(self, name): | |
| 123 name = self.fixname(name)[0] | |
| 124 self.gen.emitEndElement(name) | |
| 125 | |
| 126 def DefaultHandler(self, text): | |
| 127 self.gen.emitRawText(text) | |
| 128 | |
| 129 def test(): | |
| 130 import sys | |
| 131 p = TALParser() | |
| 132 file = "tests/input/test01.xml" | |
| 133 if sys.argv[1:]: | |
| 134 file = sys.argv[1] | |
| 135 p.parseFile(file) | |
| 136 program, macros = p.getCode() | |
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137 from .TALInterpreter import TALInterpreter |
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138 from .DummyEngine import DummyEngine |
| 1049 | 139 engine = DummyEngine(macros) |
| 140 TALInterpreter(program, macros, engine, sys.stdout, wrap=0)() | |
| 141 | |
| 142 if __name__ == "__main__": | |
| 143 test() |