Mercurial > p > roundup > code
annotate roundup/cgi/TAL/TALParser.py @ 2467:76ead526113d
client instances may be used as translation engines.
any backend translator may be passed as constructor
argument or via setTranslator() method. by default,
templating.translationService is used.
use this engine to translate client messages.
| author | Alexander Smishlajev <a1s@users.sourceforge.net> |
|---|---|
| date | Tue, 15 Jun 2004 09:19:49 +0000 |
| parents | 8c2402a78bb0 |
| children | 12fe83f90f0d |
| 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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parents:
2005
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16 """ |
| 1049 | 17 |
| 18 from XMLParser import XMLParser | |
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19 from TALDefs import XML_NS, ZOPE_I18N_NS, ZOPE_METAL_NS, ZOPE_TAL_NS |
| 1049 | 20 from TALGenerator import TALGenerator |
| 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} | |
| 59 attrlist = attrs.items() | |
| 60 attrlist.sort() # For definiteness | |
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61 name, attrlist, taldict, metaldict, i18ndict \ |
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62 = self.process_ns(name, attrlist) |
| 1049 | 63 attrlist = self.xmlnsattrs() + attrlist |
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64 self.gen.emitStartElement(name, attrlist, taldict, metaldict, i18ndict) |
| 1049 | 65 |
| 66 def process_ns(self, name, attrlist): | |
| 67 taldict = {} | |
| 68 metaldict = {} | |
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69 i18ndict = {} |
| 1049 | 70 fixedattrlist = [] |
| 71 name, namebase, namens = self.fixname(name) | |
| 72 for key, value in attrlist: | |
| 73 key, keybase, keyns = self.fixname(key) | |
| 74 ns = keyns or namens # default to tag namespace | |
| 75 item = key, value | |
| 76 if ns == 'metal': | |
| 77 metaldict[keybase] = value | |
| 78 item = item + ("metal",) | |
| 79 elif ns == 'tal': | |
| 80 taldict[keybase] = value | |
| 81 item = item + ("tal",) | |
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82 elif ns == 'i18n': |
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8c2402a78bb0
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parents:
2005
diff
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83 assert 0, "dealing with i18n: " + `(keybase, value)` |
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8c2402a78bb0
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parents:
2005
diff
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84 i18ndict[keybase] = value |
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8c2402a78bb0
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parents:
2005
diff
changeset
|
85 item = item + ('i18n',) |
| 1049 | 86 fixedattrlist.append(item) |
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parents:
2005
diff
changeset
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87 if namens in ('metal', 'tal', 'i18n'): |
| 1049 | 88 taldict['tal tag'] = namens |
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parents:
2005
diff
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89 return name, fixedattrlist, taldict, metaldict, i18ndict |
| 1049 | 90 |
| 91 def xmlnsattrs(self): | |
| 92 newlist = [] | |
| 93 for prefix, uri in self.nsNew: | |
| 94 if prefix: | |
| 95 key = "xmlns:" + prefix | |
| 96 else: | |
| 97 key = "xmlns" | |
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parents:
2005
diff
changeset
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98 if uri in (ZOPE_METAL_NS, ZOPE_TAL_NS, ZOPE_I18N_NS): |
| 1049 | 99 item = (key, uri, "xmlns") |
| 100 else: | |
| 101 item = (key, uri) | |
| 102 newlist.append(item) | |
| 103 self.nsNew = [] | |
| 104 return newlist | |
| 105 | |
| 106 def fixname(self, name): | |
| 107 if ' ' in name: | |
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parents:
2005
diff
changeset
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108 uri, name = name.split(' ') |
| 1049 | 109 prefix = self.nsDict[uri] |
| 110 prefixed = name | |
| 111 if prefix: | |
| 112 prefixed = "%s:%s" % (prefix, name) | |
| 113 ns = 'x' | |
| 114 if uri == ZOPE_TAL_NS: | |
| 115 ns = 'tal' | |
| 116 elif uri == ZOPE_METAL_NS: | |
| 117 ns = 'metal' | |
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beginning getting ZPT up to date: TAL first
Richard Jones <richard@users.sourceforge.net>
parents:
2005
diff
changeset
|
118 elif uri == ZOPE_I18N_NS: |
|
8c2402a78bb0
beginning getting ZPT up to date: TAL first
Richard Jones <richard@users.sourceforge.net>
parents:
2005
diff
changeset
|
119 ns = 'i18n' |
| 1049 | 120 return (prefixed, name, ns) |
| 121 return (name, name, None) | |
| 122 | |
| 123 def EndElementHandler(self, name): | |
| 124 name = self.fixname(name)[0] | |
| 125 self.gen.emitEndElement(name) | |
| 126 | |
| 127 def DefaultHandler(self, text): | |
| 128 self.gen.emitRawText(text) | |
| 129 | |
| 130 def test(): | |
| 131 import sys | |
| 132 p = TALParser() | |
| 133 file = "tests/input/test01.xml" | |
| 134 if sys.argv[1:]: | |
| 135 file = sys.argv[1] | |
| 136 p.parseFile(file) | |
| 137 program, macros = p.getCode() | |
| 138 from TALInterpreter import TALInterpreter | |
| 139 from DummyEngine import DummyEngine | |
| 140 engine = DummyEngine(macros) | |
| 141 TALInterpreter(program, macros, engine, sys.stdout, wrap=0)() | |
| 142 | |
| 143 if __name__ == "__main__": | |
| 144 test() |