Mercurial > p > roundup > code
annotate roundup/cgi/TAL/TALParser.py @ 8386:4e2ffa4151cb
doc: formatting fix. Don't trigger description list.
| author | John Rouillard <rouilj@ieee.org> |
|---|---|
| date | Sat, 12 Jul 2025 17:53:17 -0400 |
| parents | 23b8e6067f7c |
| children |
| rev | line source |
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| 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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2005
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117 elif uri == ZOPE_I18N_NS: |
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beginning getting ZPT up to date: TAL first
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parents:
2005
diff
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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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parents:
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137 from .TALInterpreter import TALInterpreter |
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Joseph Myers <jsm@polyomino.org.uk>
parents:
5377
diff
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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() |