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annotate roundup/cgi/TAL/DummyEngine.py @ 8528:fed0f839c260

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fix: replace except: with except Exception: (by haosenwang1018@github) Remove bare 'except:' statements replace with 'except Exception'. In roundup_xmlrpc_server.py I changed Exception to BaseException so the database gets closed on signals as well. The rest of the changes do not look like they affect data integrity and are commited as supplied.
author John Rouillard <rouilj@ieee.org>
date Thu, 26 Feb 2026 09:46:02 -0500
parents d26921b851c3
children
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1 ##############################################################################
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2 #
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3 # Copyright (c) 2001, 2002 Zope Corporation and Contributors.
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4 # All Rights Reserved.
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5 #
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6 # This software is subject to the provisions of the Zope Public License,
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7 # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
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8 # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
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9 # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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10 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
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11 # FOR A PARTICULAR PURPOSE.
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12 #
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13 ##############################################################################
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14 # Modifications for Roundup:
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15 # 1. commented out ITALES references
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16 # 2. implemented ustr as str
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17 """
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18 Dummy TALES engine so that I can test out the TAL implementation.
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19 """
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20
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21 import re
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22 import sys
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23
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24 from .TALDefs import NAME_RE, TALESError, ErrorInfo
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25 #from ITALES import ITALESCompiler, ITALESEngine
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26 #from DocumentTemplate.DT_Util import ustr
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27 ustr = str
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28
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29 IDomain = None
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30 if 'Zope' in sys.modules:
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31 try:
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32 from Zope.I18n.ITranslationService import ITranslationService
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33 from Zope.I18n.IDomain import IDomain
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34 except ImportError:
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35 pass
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36 if IDomain is None:
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37 # Before 2.7, or not in Zope
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38 class ITranslationService: pass
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39 class IDomain: pass
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40
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41 class _Default:
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42 pass
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43 Default = _Default()
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44
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45 name_match = re.compile(r"(?s)(%s):(.*)\Z" % NAME_RE).match
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46
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47 class CompilerError(BaseException):
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48 pass
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49
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50 class DummyEngine:
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51
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52 position = None
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53 source_file = None
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54
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55 #__implements__ = ITALESCompiler, ITALESEngine
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56
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57 def __init__(self, macros=None):
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58 if macros is None:
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59 macros = {}
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60 self.macros = macros
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61 dict = {'nothing': None, 'default': Default}
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62 self.locals = self.globals = dict
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63 self.stack = [dict]
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64 self.translationService = DummyTranslationService()
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65
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66 def getCompilerError(self):
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67 return CompilerError
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68
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69 def getCompiler(self):
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70 return self
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71
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72 def setSourceFile(self, source_file):
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73 self.source_file = source_file
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74
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75 def setPosition(self, position):
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76 self.position = position
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77
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78 def compile(self, expr):
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79 return "$%s$" % expr
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80
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81 def uncompile(self, expression):
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82 assert expression.startswith("$") and expression.endswith("$"),expression
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83 return expression[1:-1]
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84
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85 def beginScope(self):
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86 self.stack.append(self.locals)
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87
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88 def endScope(self):
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89 assert len(self.stack) > 1, "more endScope() than beginScope() calls"
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90 self.locals = self.stack.pop()
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91
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92 def setLocal(self, name, value):
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93 if self.locals is self.stack[-1]:
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94 # Unmerge this scope's locals from previous scope of first set
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95 self.locals = self.locals.copy()
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96 self.locals[name] = value
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97
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98 def setGlobal(self, name, value):
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99 self.globals[name] = value
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100
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101 def evaluate(self, expression):
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102 assert expression.startswith("$") and expression.endswith("$"), expression
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103 expression = expression[1:-1]
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104 m = name_match(expression)
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105 if m:
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106 type, expr = m.group(1, 2)
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107 else:
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108 type = "path"
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109 expr = expression
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110 if type in ("string", "str"):
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111 return expr
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112 if type in ("path", "var", "global", "local"):
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113 return self.evaluatePathOrVar(expr)
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114 if type == "not":
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115 return not self.evaluate(expr)
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116 if type == "exists":
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117 return expr in self.locals or expr in self.globals
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118 if type == "python":
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119 try:
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120 return eval(expr, self.globals, self.locals)
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121 except Exception:
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122 raise TALESError("evaluation error in %s" % repr(expr))
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123 if type == "position":
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124 # Insert the current source file name, line number,
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125 # and column offset.
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126 if self.position:
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127 lineno, offset = self.position
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128 else:
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129 lineno, offset = None, None
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130 return '%s (%s,%s)' % (self.source_file, lineno, offset)
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131 raise TALESError("unrecognized expression: " + repr(expression))
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132
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133 def evaluatePathOrVar(self, expr):
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134 expr = expr.strip()
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135 if expr in self.locals:
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136 return self.locals[expr]
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137 elif expr in self.globals:
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138 return self.globals[expr]
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139 else:
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140 raise TALESError("unknown variable: %s" % repr(expr))
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141
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142 def evaluateValue(self, expr):
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143 return self.evaluate(expr)
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144
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diff changeset
145 def evaluateBoolean(self, expr):
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146 return self.evaluate(expr)
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147
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148 def evaluateText(self, expr):
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149 text = self.evaluate(expr)
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150 if text is not None and text is not Default:
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diff changeset
151 text = ustr(text)
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152 return text
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153
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154 def evaluateStructure(self, expr):
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155 # XXX Should return None or a DOM tree
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156 return self.evaluate(expr)
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157
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158 def evaluateSequence(self, expr):
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159 # XXX Should return a sequence
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160 return self.evaluate(expr)
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161
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162 def evaluateMacro(self, macroName):
4533
792586cc78a4 issue2550728: remove buggy parentheses in TAL/DummyEngine.py.
Bernhard Reiter <Bernhard.Reiter@intevation.de>
parents: 2348
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163 assert macroName.startswith("$") and macroName.endswith("$"), macroName
2348
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164 macroName = macroName[1:-1]
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165 file, localName = self.findMacroFile(macroName)
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166 if not file:
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167 # Local macro
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168 macro = self.macros[localName]
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169 else:
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170 # External macro
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171 import driver
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172 program, macros = driver.compilefile(file)
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173 macro = macros.get(localName)
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174 if not macro:
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175 raise TALESError("macro %s not found in file %s" %
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176 (localName, file))
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177 return macro
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178
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179 def findMacroDocument(self, macroName):
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180 file, localName = self.findMacroFile(macroName)
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181 if not file:
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182 return file, localName
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183 import driver
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Richard Jones <richard@users.sourceforge.net>
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184 doc = driver.parsefile(file)
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185 return doc, localName
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186
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187 def findMacroFile(self, macroName):
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188 if not macroName:
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189 raise TALESError("empty macro name")
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190 i = macroName.rfind('/')
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Richard Jones <richard@users.sourceforge.net>
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191 if i < 0:
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Richard Jones <richard@users.sourceforge.net>
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192 # No slash -- must be a locally defined macro
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193 return None, macroName
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194 else:
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195 # Up to last slash is the filename
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196 fileName = macroName[:i]
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197 localName = macroName[i+1:]
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198 return fileName, localName
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199
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200 def setRepeat(self, name, expr):
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201 seq = self.evaluateSequence(expr)
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202 return Iterator(name, seq, self)
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203
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204 def createErrorInfo(self, err, position):
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diff changeset
205 return ErrorInfo(err, position)
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206
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207 def getDefault(self):
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208 return Default
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209
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210 def translate(self, domain, msgid, mapping, default=None):
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211 return self.translationService.translate(domain, msgid, mapping,
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diff changeset
212 default=default)
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213
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214
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215 class Iterator:
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216
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217 # This is not an implementation of a Python iterator. The next()
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218 # method returns true or false to indicate whether another item is
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219 # available; if there is another item, the iterator instance calls
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220 # setLocal() on the evaluation engine passed to the constructor.
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221
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222 def __init__(self, name, seq, engine):
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223 self.name = name
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224 self.seq = seq
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225 self.engine = engine
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226 self.nextIndex = 0
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227
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228 def next(self):
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229 i = self.nextIndex
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230 try:
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231 item = self.seq[i]
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232 except IndexError:
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233 return 0
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234 self.nextIndex = i+1
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diff changeset
235 self.engine.setLocal(self.name, item)
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236 return 1
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237
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238 class DummyDomain:
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diff changeset
239 __implements__ = IDomain
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240
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diff changeset
241 def translate(self, msgid, mapping=None, context=None,
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parents:
diff changeset
242 target_language=None, default=None):
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243 # This is a fake translation service which simply uppercases non
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parents:
diff changeset
244 # ${name} placeholder text in the message id.
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245 #
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parents:
diff changeset
246 # First, transform a string with ${name} placeholders into a list of
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Richard Jones <richard@users.sourceforge.net>
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diff changeset
247 # substrings. Then upcase everything but the placeholders, then glue
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diff changeset
248 # things back together.
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249
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250 # simulate an unknown msgid by returning None
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parents:
diff changeset
251 if msgid == "don't translate me":
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252 text = default
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253 else:
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254 text = msgid.upper()
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255
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parents:
diff changeset
256 def repl(m, mapping=mapping):
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diff changeset
257 return ustr(mapping[m.group(m.lastindex).lower()])
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parents:
diff changeset
258 cre = re.compile(r'\$(?:(%s)|\{(%s)\})' % (NAME_RE, NAME_RE))
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parents:
diff changeset
259 return cre.sub(repl, text)
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parents:
diff changeset
260
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261 class DummyTranslationService:
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parents:
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262 __implements__ = ITranslationService
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parents:
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263
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parents:
diff changeset
264 def translate(self, domain, msgid, mapping=None, context=None,
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parents:
diff changeset
265 target_language=None, default=None):
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parents:
diff changeset
266 return self.getDomain(domain).translate(msgid, mapping, context,
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parents:
diff changeset
267 target_language,
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parents:
diff changeset
268 default=default)
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269
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270 def getDomain(self, domain):
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parents:
diff changeset
271 return DummyDomain()
Roundup Issue Tracker: http://roundup-tracker.org/