Mercurial > p > roundup > code
annotate roundup/cgi/TAL/TALGenerator.py @ 5809:936275dfe1fa
Try to fix:
DeprecationWarning: invalid escape sequence \d
DeprecationWarning: invalid escape sequence \s
DeprecationWarning: invalid escape sequence \)
Strings under python 3 are unicode strings rather then "regular"
strings as under python 2. So all regexps need to be raw strings.
We will see how many I fixed and if I broke any.
| author | John Rouillard <rouilj@ieee.org> |
|---|---|
| date | Wed, 12 Jun 2019 20:34:47 -0400 |
| parents | 1a835db41674 |
| children | 883c9e90b403 |
| 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 Code generator for TALInterpreter intermediate code. |
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16 """ |
| 1049 | 17 |
| 18 import re | |
| 19 import cgi | |
| 20 | |
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21 from . import TALDefs |
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22 |
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23 from .TALDefs import NAME_RE, TAL_VERSION |
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24 from .TALDefs import I18NError, METALError, TALError |
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25 from .TALDefs import parseSubstitution |
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26 from .TranslationContext import TranslationContext, DEFAULT_DOMAIN |
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27 |
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28 try: |
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29 from html import escape as html_escape # python 3 |
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30 except ImportError: |
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31 from cgi import escape as html_escape # python 2 fallback |
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32 |
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33 I18N_REPLACE = 1 |
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34 I18N_CONTENT = 2 |
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35 I18N_EXPRESSION = 3 |
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36 |
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37 _name_rx = re.compile(NAME_RE) |
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38 |
| 1049 | 39 |
| 40 class TALGenerator: | |
| 41 | |
| 42 inMacroUse = 0 | |
| 43 inMacroDef = 0 | |
| 44 source_file = None | |
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45 |
| 1049 | 46 def __init__(self, expressionCompiler=None, xml=1, source_file=None): |
| 47 if not expressionCompiler: | |
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48 from .DummyEngine import DummyEngine |
| 1049 | 49 expressionCompiler = DummyEngine() |
| 50 self.expressionCompiler = expressionCompiler | |
| 51 self.CompilerError = expressionCompiler.getCompilerError() | |
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52 # This holds the emitted opcodes representing the input |
| 1049 | 53 self.program = [] |
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54 # The program stack for when we need to do some sub-evaluation for an |
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55 # intermediate result. E.g. in an i18n:name tag for which the |
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56 # contents describe the ${name} value. |
| 1049 | 57 self.stack = [] |
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58 # Another stack of postponed actions. Elements on this stack are a |
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59 # dictionary; key/values contain useful information that |
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60 # emitEndElement needs to finish its calculations |
| 1049 | 61 self.todoStack = [] |
| 62 self.macros = {} | |
| 63 self.slots = {} | |
| 64 self.slotStack = [] | |
| 65 self.xml = xml | |
| 66 self.emit("version", TAL_VERSION) | |
| 67 self.emit("mode", xml and "xml" or "html") | |
| 68 if source_file is not None: | |
| 69 self.source_file = source_file | |
| 70 self.emit("setSourceFile", source_file) | |
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71 self.i18nContext = TranslationContext() |
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72 self.i18nLevel = 0 |
| 1049 | 73 |
| 74 def getCode(self): | |
| 75 assert not self.stack | |
| 76 assert not self.todoStack | |
| 77 return self.optimize(self.program), self.macros | |
| 78 | |
| 79 def optimize(self, program): | |
| 80 output = [] | |
| 81 collect = [] | |
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82 cursor = 0 |
| 1049 | 83 if self.xml: |
| 84 endsep = "/>" | |
| 85 else: | |
| 86 endsep = " />" | |
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87 for cursor in range(len(program)+1): |
| 1049 | 88 try: |
| 89 item = program[cursor] | |
| 90 except IndexError: | |
| 91 item = (None, None) | |
| 92 opcode = item[0] | |
| 93 if opcode == "rawtext": | |
| 94 collect.append(item[1]) | |
| 95 continue | |
| 96 if opcode == "endTag": | |
| 97 collect.append("</%s>" % item[1]) | |
| 98 continue | |
| 99 if opcode == "startTag": | |
| 100 if self.optimizeStartTag(collect, item[1], item[2], ">"): | |
| 101 continue | |
| 102 if opcode == "startEndTag": | |
| 103 if self.optimizeStartTag(collect, item[1], item[2], endsep): | |
| 104 continue | |
| 105 if opcode in ("beginScope", "endScope"): | |
| 106 # Push *Scope instructions in front of any text instructions; | |
| 107 # this allows text instructions separated only by *Scope | |
| 108 # instructions to be joined together. | |
| 109 output.append(self.optimizeArgsList(item)) | |
| 110 continue | |
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111 if opcode == 'noop': |
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112 # This is a spacer for end tags in the face of i18n:name |
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113 # attributes. We can't let the optimizer collect immediately |
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114 # following end tags into the same rawtextOffset. |
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115 opcode = None |
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116 pass |
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117 text = "".join(collect) |
| 1049 | 118 if text: |
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119 i = text.rfind("\n") |
| 1049 | 120 if i >= 0: |
| 121 i = len(text) - (i + 1) | |
| 122 output.append(("rawtextColumn", (text, i))) | |
| 123 else: | |
| 124 output.append(("rawtextOffset", (text, len(text)))) | |
| 125 if opcode != None: | |
| 126 output.append(self.optimizeArgsList(item)) | |
| 127 collect = [] | |
| 128 return self.optimizeCommonTriple(output) | |
| 129 | |
| 130 def optimizeArgsList(self, item): | |
| 131 if len(item) == 2: | |
| 132 return item | |
| 133 else: | |
| 134 return item[0], tuple(item[1:]) | |
| 135 | |
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136 # These codes are used to indicate what sort of special actions |
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137 # are needed for each special attribute. (Simple attributes don't |
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138 # get action codes.) |
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139 # |
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140 # The special actions (which are modal) are handled by |
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141 # TALInterpreter.attrAction() and .attrAction_tal(). |
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142 # |
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143 # Each attribute is represented by a tuple: |
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144 # |
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145 # (name, value) -- a simple name/value pair, with |
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146 # no special processing |
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147 # |
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148 # (name, value, action, *extra) -- attribute with special |
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149 # processing needs, action is a |
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150 # code that indicates which |
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151 # branch to take, and *extra |
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152 # contains additional, |
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153 # action-specific information |
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154 # needed by the processing |
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155 # |
| 1049 | 156 def optimizeStartTag(self, collect, name, attrlist, end): |
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157 # return true if the tag can be converted to plain text |
| 1049 | 158 if not attrlist: |
| 159 collect.append("<%s%s" % (name, end)) | |
| 160 return 1 | |
| 161 opt = 1 | |
| 162 new = ["<" + name] | |
| 163 for i in range(len(attrlist)): | |
| 164 item = attrlist[i] | |
| 165 if len(item) > 2: | |
| 166 opt = 0 | |
| 167 name, value, action = item[:3] | |
| 168 attrlist[i] = (name, value, action) + item[3:] | |
| 169 else: | |
| 170 if item[1] is None: | |
| 171 s = item[0] | |
| 172 else: | |
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173 s = '%s="%s"' % (item[0], TALDefs.attrEscape(item[1])) |
| 1049 | 174 attrlist[i] = item[0], s |
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175 new.append(" " + s) |
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176 # if no non-optimizable attributes were found, convert to plain text |
| 1049 | 177 if opt: |
| 178 new.append(end) | |
| 179 collect.extend(new) | |
| 180 return opt | |
| 181 | |
| 182 def optimizeCommonTriple(self, program): | |
| 183 if len(program) < 3: | |
| 184 return program | |
| 185 output = program[:2] | |
| 186 prev2, prev1 = output | |
| 187 for item in program[2:]: | |
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188 if ( item[0] == "beginScope" |
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189 and prev1[0] == "setPosition" |
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190 and prev2[0] == "rawtextColumn"): |
| 1049 | 191 position = output.pop()[1] |
| 192 text, column = output.pop()[1] | |
| 193 prev1 = None, None | |
| 194 closeprev = 0 | |
| 195 if output and output[-1][0] == "endScope": | |
| 196 closeprev = 1 | |
| 197 output.pop() | |
| 198 item = ("rawtextBeginScope", | |
| 199 (text, column, position, closeprev, item[1])) | |
| 200 output.append(item) | |
| 201 prev2 = prev1 | |
| 202 prev1 = item | |
| 203 return output | |
| 204 | |
| 205 def todoPush(self, todo): | |
| 206 self.todoStack.append(todo) | |
| 207 | |
| 208 def todoPop(self): | |
| 209 return self.todoStack.pop() | |
| 210 | |
| 211 def compileExpression(self, expr): | |
| 212 try: | |
| 213 return self.expressionCompiler.compile(expr) | |
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214 except self.CompilerError as err: |
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215 raise TALError('%s in expression %s' % (err.args[0], repr(expr)), |
| 1049 | 216 self.position) |
| 217 | |
| 218 def pushProgram(self): | |
| 219 self.stack.append(self.program) | |
| 220 self.program = [] | |
| 221 | |
| 222 def popProgram(self): | |
| 223 program = self.program | |
| 224 self.program = self.stack.pop() | |
| 225 return self.optimize(program) | |
| 226 | |
| 227 def pushSlots(self): | |
| 228 self.slotStack.append(self.slots) | |
| 229 self.slots = {} | |
| 230 | |
| 231 def popSlots(self): | |
| 232 slots = self.slots | |
| 233 self.slots = self.slotStack.pop() | |
| 234 return slots | |
| 235 | |
| 236 def emit(self, *instruction): | |
| 237 self.program.append(instruction) | |
| 238 | |
| 239 def emitStartTag(self, name, attrlist, isend=0): | |
| 240 if isend: | |
| 241 opcode = "startEndTag" | |
| 242 else: | |
| 243 opcode = "startTag" | |
| 244 self.emit(opcode, name, attrlist) | |
| 245 | |
| 246 def emitEndTag(self, name): | |
| 247 if self.xml and self.program and self.program[-1][0] == "startTag": | |
| 248 # Minimize empty element | |
| 249 self.program[-1] = ("startEndTag",) + self.program[-1][1:] | |
| 250 else: | |
| 251 self.emit("endTag", name) | |
| 252 | |
| 253 def emitOptTag(self, name, optTag, isend): | |
| 254 program = self.popProgram() #block | |
| 255 start = self.popProgram() #start tag | |
| 256 if (isend or not program) and self.xml: | |
| 257 # Minimize empty element | |
| 258 start[-1] = ("startEndTag",) + start[-1][1:] | |
| 259 isend = 1 | |
| 260 cexpr = optTag[0] | |
| 261 if cexpr: | |
| 262 cexpr = self.compileExpression(optTag[0]) | |
| 263 self.emit("optTag", name, cexpr, optTag[1], isend, start, program) | |
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264 |
| 1049 | 265 def emitRawText(self, text): |
| 266 self.emit("rawtext", text) | |
| 267 | |
| 268 def emitText(self, text): | |
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269 self.emitRawText(html_escape(text)) |
| 1049 | 270 |
| 271 def emitDefines(self, defines): | |
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272 for part in TALDefs.splitParts(defines): |
| 1049 | 273 m = re.match( |
| 274 r"(?s)\s*(?:(global|local)\s+)?(%s)\s+(.*)\Z" % NAME_RE, part) | |
| 275 if not m: | |
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276 raise TALError("invalid define syntax: " + repr(part), |
| 1049 | 277 self.position) |
| 278 scope, name, expr = m.group(1, 2, 3) | |
| 279 scope = scope or "local" | |
| 280 cexpr = self.compileExpression(expr) | |
| 281 if scope == "local": | |
| 282 self.emit("setLocal", name, cexpr) | |
| 283 else: | |
| 284 self.emit("setGlobal", name, cexpr) | |
| 285 | |
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286 def emitOnError(self, name, onError, TALtag, isend): |
| 1049 | 287 block = self.popProgram() |
| 288 key, expr = parseSubstitution(onError) | |
| 289 cexpr = self.compileExpression(expr) | |
| 290 if key == "text": | |
| 291 self.emit("insertText", cexpr, []) | |
| 292 else: | |
| 293 assert key == "structure" | |
| 294 self.emit("insertStructure", cexpr, {}, []) | |
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295 if TALtag: |
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296 self.emitOptTag(name, (None, 1), isend) |
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297 else: |
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298 self.emitEndTag(name) |
| 1049 | 299 handler = self.popProgram() |
| 300 self.emit("onError", block, handler) | |
| 301 | |
| 302 def emitCondition(self, expr): | |
| 303 cexpr = self.compileExpression(expr) | |
| 304 program = self.popProgram() | |
| 305 self.emit("condition", cexpr, program) | |
| 306 | |
| 307 def emitRepeat(self, arg): | |
| 5809 | 308 m = re.match(r"(?s)\s*(%s)\s+(.*)\Z" % NAME_RE, arg) |
| 1049 | 309 if not m: |
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310 raise TALError("invalid repeat syntax: " + repr(arg), |
| 1049 | 311 self.position) |
| 312 name, expr = m.group(1, 2) | |
| 313 cexpr = self.compileExpression(expr) | |
| 314 program = self.popProgram() | |
| 315 self.emit("loop", name, cexpr, program) | |
| 316 | |
| 317 def emitSubstitution(self, arg, attrDict={}): | |
| 318 key, expr = parseSubstitution(arg) | |
| 319 cexpr = self.compileExpression(expr) | |
| 320 program = self.popProgram() | |
| 321 if key == "text": | |
| 322 self.emit("insertText", cexpr, program) | |
| 323 else: | |
| 324 assert key == "structure" | |
| 325 self.emit("insertStructure", cexpr, attrDict, program) | |
| 326 | |
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327 def emitI18nVariable(self, stuff): |
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328 # Used for i18n:name attributes. arg is extra information describing |
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329 # how the contents of the variable should get filled in, and it will |
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330 # either be a 1-tuple or a 2-tuple. If arg[0] is None, then the |
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331 # i18n:name value is taken implicitly from the contents of the tag, |
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332 # e.g. "I live in <span i18n:name="country">the USA</span>". In this |
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333 # case, arg[1] is the opcode sub-program describing the contents of |
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334 # the tag. |
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335 # |
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336 # When arg[0] is not None, it contains the tal expression used to |
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337 # calculate the contents of the variable, e.g. |
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338 # "I live in <span i18n:name="country" |
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339 # tal:replace="here/countryOfOrigin" />" |
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340 varname, action, expression = stuff |
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341 m = _name_rx.match(varname) |
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342 if m is None or m.group() != varname: |
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343 raise TALError("illegal i18n:name: %r" % varname, self.position) |
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344 key = cexpr = None |
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345 program = self.popProgram() |
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346 if action == I18N_REPLACE: |
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347 # This is a tag with an i18n:name and a tal:replace (implicit or |
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348 # explicit). Get rid of the first and last elements of the |
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349 # program, which are the start and end tag opcodes of the tag. |
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350 program = program[1:-1] |
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351 elif action == I18N_CONTENT: |
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352 # This is a tag with an i18n:name and a tal:content |
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353 # (explicit-only). Keep the first and last elements of the |
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354 # program, so we keep the start and end tag output. |
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355 pass |
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356 else: |
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357 assert action == I18N_EXPRESSION |
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358 key, expr = parseSubstitution(expression) |
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359 cexpr = self.compileExpression(expr) |
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360 # XXX Would key be anything but 'text' or None? |
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361 assert key in ('text', None) |
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362 self.emit('i18nVariable', varname, program, cexpr) |
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363 |
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364 def emitTranslation(self, msgid, i18ndata): |
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365 program = self.popProgram() |
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366 if i18ndata is None: |
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367 self.emit('insertTranslation', msgid, program) |
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368 else: |
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369 key, expr = parseSubstitution(i18ndata) |
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370 cexpr = self.compileExpression(expr) |
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371 assert key == 'text' |
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372 self.emit('insertTranslation', msgid, program, cexpr) |
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373 |
| 1049 | 374 def emitDefineMacro(self, macroName): |
| 375 program = self.popProgram() | |
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376 macroName = macroName.strip() |
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377 if macroName in self.macros: |
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378 raise METALError("duplicate macro definition: %s" % repr(macroName), |
| 1049 | 379 self.position) |
| 380 if not re.match('%s$' % NAME_RE, macroName): | |
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381 raise METALError("invalid macro name: %s" % repr(macroName), |
| 1049 | 382 self.position) |
| 383 self.macros[macroName] = program | |
| 384 self.inMacroDef = self.inMacroDef - 1 | |
| 385 self.emit("defineMacro", macroName, program) | |
| 386 | |
| 387 def emitUseMacro(self, expr): | |
| 388 cexpr = self.compileExpression(expr) | |
| 389 program = self.popProgram() | |
| 390 self.inMacroUse = 0 | |
| 391 self.emit("useMacro", expr, cexpr, self.popSlots(), program) | |
| 392 | |
| 393 def emitDefineSlot(self, slotName): | |
| 394 program = self.popProgram() | |
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395 slotName = slotName.strip() |
| 1049 | 396 if not re.match('%s$' % NAME_RE, slotName): |
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397 raise METALError("invalid slot name: %s" % repr(slotName), |
| 1049 | 398 self.position) |
| 399 self.emit("defineSlot", slotName, program) | |
| 400 | |
| 401 def emitFillSlot(self, slotName): | |
| 402 program = self.popProgram() | |
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403 slotName = slotName.strip() |
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404 if slotName in self.slots: |
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405 raise METALError("duplicate fill-slot name: %s" % repr(slotName), |
| 1049 | 406 self.position) |
| 407 if not re.match('%s$' % NAME_RE, slotName): | |
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408 raise METALError("invalid slot name: %s" % repr(slotName), |
| 1049 | 409 self.position) |
| 410 self.slots[slotName] = program | |
| 411 self.inMacroUse = 1 | |
| 412 self.emit("fillSlot", slotName, program) | |
| 413 | |
| 414 def unEmitWhitespace(self): | |
| 415 collect = [] | |
| 416 i = len(self.program) - 1 | |
| 417 while i >= 0: | |
| 418 item = self.program[i] | |
| 419 if item[0] != "rawtext": | |
| 420 break | |
| 421 text = item[1] | |
| 422 if not re.match(r"\A\s*\Z", text): | |
| 423 break | |
| 424 collect.append(text) | |
| 425 i = i-1 | |
| 426 del self.program[i+1:] | |
| 427 if i >= 0 and self.program[i][0] == "rawtext": | |
| 428 text = self.program[i][1] | |
| 429 m = re.search(r"\s+\Z", text) | |
| 430 if m: | |
| 431 self.program[i] = ("rawtext", text[:m.start()]) | |
| 432 collect.append(m.group()) | |
| 433 collect.reverse() | |
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434 return "".join(collect) |
| 1049 | 435 |
| 436 def unEmitNewlineWhitespace(self): | |
| 437 collect = [] | |
| 438 i = len(self.program) | |
| 439 while i > 0: | |
| 440 i = i-1 | |
| 441 item = self.program[i] | |
| 442 if item[0] != "rawtext": | |
| 443 break | |
| 444 text = item[1] | |
| 445 if re.match(r"\A[ \t]*\Z", text): | |
| 446 collect.append(text) | |
| 447 continue | |
| 448 m = re.match(r"(?s)^(.*)(\n[ \t]*)\Z", text) | |
| 449 if not m: | |
| 450 break | |
| 451 text, rest = m.group(1, 2) | |
| 452 collect.reverse() | |
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453 rest = rest + "".join(collect) |
| 1049 | 454 del self.program[i:] |
| 455 if text: | |
| 456 self.emit("rawtext", text) | |
| 457 return rest | |
| 458 return None | |
| 459 | |
| 460 def replaceAttrs(self, attrlist, repldict): | |
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461 # Each entry in attrlist starts like (name, value). |
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462 # Result is (name, value, action, expr, xlat) if there is a |
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463 # tal:attributes entry for that attribute. Additional attrs |
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464 # defined only by tal:attributes are added here. |
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465 # |
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466 # (name, value, action, expr, xlat) |
| 1049 | 467 if not repldict: |
| 468 return attrlist | |
| 469 newlist = [] | |
| 470 for item in attrlist: | |
| 471 key = item[0] | |
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472 if key in repldict: |
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473 expr, xlat, msgid = repldict[key] |
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474 item = item[:2] + ("replace", expr, xlat, msgid) |
| 1049 | 475 del repldict[key] |
| 476 newlist.append(item) | |
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477 # Add dynamic-only attributes |
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478 for key, (expr, xlat, msgid) in repldict.items(): |
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479 newlist.append((key, None, "insert", expr, xlat, msgid)) |
| 1049 | 480 return newlist |
| 481 | |
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482 def emitStartElement(self, name, attrlist, taldict, metaldict, i18ndict, |
| 1049 | 483 position=(None, None), isend=0): |
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484 if not taldict and not metaldict and not i18ndict: |
| 1049 | 485 # Handle the simple, common case |
| 486 self.emitStartTag(name, attrlist, isend) | |
| 487 self.todoPush({}) | |
| 488 if isend: | |
| 489 self.emitEndElement(name, isend) | |
| 490 return | |
| 491 | |
| 492 self.position = position | |
| 493 for key, value in taldict.items(): | |
|
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494 if key not in TALDefs.KNOWN_TAL_ATTRIBUTES: |
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495 raise TALError("bad TAL attribute: " + repr(key), position) |
| 1049 | 496 if not (value or key == 'omit-tag'): |
| 497 raise TALError("missing value for TAL attribute: " + | |
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498 repr(key), position) |
| 1049 | 499 for key, value in metaldict.items(): |
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500 if key not in TALDefs.KNOWN_METAL_ATTRIBUTES: |
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501 raise METALError("bad METAL attribute: " + repr(key), |
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502 position) |
| 1049 | 503 if not value: |
| 504 raise TALError("missing value for METAL attribute: " + | |
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505 repr(key), position) |
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506 for key, value in i18ndict.items(): |
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507 if key not in TALDefs.KNOWN_I18N_ATTRIBUTES: |
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508 raise I18NError("bad i18n attribute: " + repr(key), position) |
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509 if not value and key in ("attributes", "data", "id"): |
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510 raise I18NError("missing value for i18n attribute: " + |
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511 repr(key), position) |
| 1049 | 512 todo = {} |
| 513 defineMacro = metaldict.get("define-macro") | |
| 514 useMacro = metaldict.get("use-macro") | |
| 515 defineSlot = metaldict.get("define-slot") | |
| 516 fillSlot = metaldict.get("fill-slot") | |
| 517 define = taldict.get("define") | |
| 518 condition = taldict.get("condition") | |
| 519 repeat = taldict.get("repeat") | |
| 520 content = taldict.get("content") | |
| 521 replace = taldict.get("replace") | |
| 522 attrsubst = taldict.get("attributes") | |
| 523 onError = taldict.get("on-error") | |
| 524 omitTag = taldict.get("omit-tag") | |
| 525 TALtag = taldict.get("tal tag") | |
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526 i18nattrs = i18ndict.get("attributes") |
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527 # Preserve empty string if implicit msgids are used. We'll generate |
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528 # code with the msgid='' and calculate the right implicit msgid during |
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529 # interpretation phase. |
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530 msgid = i18ndict.get("translate") |
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531 varname = i18ndict.get('name') |
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532 i18ndata = i18ndict.get('data') |
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533 |
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534 if varname and not self.i18nLevel: |
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535 raise I18NError( |
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536 "i18n:name can only occur inside a translation unit", |
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537 position) |
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538 |
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539 if i18ndata and not msgid: |
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540 raise I18NError("i18n:data must be accompanied by i18n:translate", |
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541 position) |
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542 |
| 1049 | 543 if len(metaldict) > 1 and (defineMacro or useMacro): |
| 544 raise METALError("define-macro and use-macro cannot be used " | |
| 545 "together or with define-slot or fill-slot", | |
| 546 position) | |
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547 if replace: |
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548 if content: |
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549 raise TALError( |
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550 "tal:content and tal:replace are mutually exclusive", |
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551 position) |
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552 if msgid is not None: |
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553 raise I18NError( |
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554 "i18n:translate and tal:replace are mutually exclusive", |
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555 position) |
| 1049 | 556 |
| 557 repeatWhitespace = None | |
| 558 if repeat: | |
| 559 # Hack to include preceding whitespace in the loop program | |
| 560 repeatWhitespace = self.unEmitNewlineWhitespace() | |
| 561 if position != (None, None): | |
| 562 # XXX at some point we should insist on a non-trivial position | |
| 563 self.emit("setPosition", position) | |
| 564 if self.inMacroUse: | |
| 565 if fillSlot: | |
| 566 self.pushProgram() | |
| 567 if self.source_file is not None: | |
| 568 self.emit("setSourceFile", self.source_file) | |
| 569 todo["fillSlot"] = fillSlot | |
| 570 self.inMacroUse = 0 | |
| 571 else: | |
| 572 if fillSlot: | |
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573 raise METALError("fill-slot must be within a use-macro", |
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574 position) |
| 1049 | 575 if not self.inMacroUse: |
| 576 if defineMacro: | |
| 577 self.pushProgram() | |
| 578 self.emit("version", TAL_VERSION) | |
| 579 self.emit("mode", self.xml and "xml" or "html") | |
| 580 if self.source_file is not None: | |
| 581 self.emit("setSourceFile", self.source_file) | |
| 582 todo["defineMacro"] = defineMacro | |
| 583 self.inMacroDef = self.inMacroDef + 1 | |
| 584 if useMacro: | |
| 585 self.pushSlots() | |
| 586 self.pushProgram() | |
| 587 todo["useMacro"] = useMacro | |
| 588 self.inMacroUse = 1 | |
| 589 if defineSlot: | |
| 590 if not self.inMacroDef: | |
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591 raise METALError( |
| 1049 | 592 "define-slot must be within a define-macro", |
| 593 position) | |
| 594 self.pushProgram() | |
| 595 todo["defineSlot"] = defineSlot | |
| 596 | |
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597 if defineSlot or i18ndict: |
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598 |
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599 domain = i18ndict.get("domain") or self.i18nContext.domain |
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600 source = i18ndict.get("source") or self.i18nContext.source |
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601 target = i18ndict.get("target") or self.i18nContext.target |
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602 if ( domain != DEFAULT_DOMAIN |
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603 or source is not None |
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604 or target is not None): |
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605 self.i18nContext = TranslationContext(self.i18nContext, |
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606 domain=domain, |
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607 source=source, |
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608 target=target) |
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609 self.emit("beginI18nContext", |
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610 {"domain": domain, "source": source, |
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611 "target": target}) |
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612 todo["i18ncontext"] = 1 |
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613 if taldict or i18ndict: |
| 1049 | 614 dict = {} |
| 615 for item in attrlist: | |
| 616 key, value = item[:2] | |
| 617 dict[key] = value | |
| 618 self.emit("beginScope", dict) | |
| 619 todo["scope"] = 1 | |
| 620 if onError: | |
| 621 self.pushProgram() # handler | |
|
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622 if TALtag: |
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623 self.pushProgram() # start |
| 1049 | 624 self.emitStartTag(name, list(attrlist)) # Must copy attrlist! |
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625 if TALtag: |
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626 self.pushProgram() # start |
| 1049 | 627 self.pushProgram() # block |
| 628 todo["onError"] = onError | |
| 629 if define: | |
| 630 self.emitDefines(define) | |
| 631 todo["define"] = define | |
| 632 if condition: | |
| 633 self.pushProgram() | |
| 634 todo["condition"] = condition | |
| 635 if repeat: | |
| 636 todo["repeat"] = repeat | |
| 637 self.pushProgram() | |
| 638 if repeatWhitespace: | |
| 639 self.emitText(repeatWhitespace) | |
| 640 if content: | |
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641 if varname: |
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642 todo['i18nvar'] = (varname, I18N_CONTENT, None) |
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643 todo["content"] = content |
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644 self.pushProgram() |
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645 else: |
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646 todo["content"] = content |
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647 elif replace: |
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648 # tal:replace w/ i18n:name has slightly different semantics. What |
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649 # we're actually replacing then is the contents of the ${name} |
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650 # placeholder. |
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651 if varname: |
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652 todo['i18nvar'] = (varname, I18N_EXPRESSION, replace) |
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653 else: |
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654 todo["replace"] = replace |
| 1049 | 655 self.pushProgram() |
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656 # i18n:name w/o tal:replace uses the content as the interpolation |
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657 # dictionary values |
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658 elif varname: |
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659 todo['i18nvar'] = (varname, I18N_REPLACE, None) |
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660 self.pushProgram() |
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661 if msgid is not None: |
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662 self.i18nLevel += 1 |
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663 todo['msgid'] = msgid |
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664 if i18ndata: |
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665 todo['i18ndata'] = i18ndata |
| 1049 | 666 optTag = omitTag is not None or TALtag |
| 667 if optTag: | |
| 668 todo["optional tag"] = omitTag, TALtag | |
| 669 self.pushProgram() | |
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670 if attrsubst or i18nattrs: |
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671 if attrsubst: |
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672 repldict = TALDefs.parseAttributeReplacements(attrsubst, |
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673 self.xml) |
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674 else: |
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675 repldict = {} |
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676 if i18nattrs: |
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677 i18nattrs = _parseI18nAttributes(i18nattrs, attrlist, repldict, |
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678 self.position, self.xml, |
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679 self.source_file) |
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680 else: |
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681 i18nattrs = {} |
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682 # Convert repldict's name-->expr mapping to a |
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683 # name-->(compiled_expr, translate) mapping |
| 1049 | 684 for key, value in repldict.items(): |
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685 if i18nattrs.get(key, None): |
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686 raise I18NError( |
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687 ("attribute [%s] cannot both be part of tal:attributes" + |
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688 " and have a msgid in i18n:attributes") % key, |
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689 position) |
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690 ce = self.compileExpression(value) |
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691 repldict[key] = ce, key in i18nattrs, i18nattrs.get(key) |
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692 for key in i18nattrs: |
|
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693 if key not in repldict: |
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694 repldict[key] = None, 1, i18nattrs.get(key) |
| 1049 | 695 else: |
| 696 repldict = {} | |
| 697 if replace: | |
| 698 todo["repldict"] = repldict | |
| 699 repldict = {} | |
| 700 self.emitStartTag(name, self.replaceAttrs(attrlist, repldict), isend) | |
| 701 if optTag: | |
| 702 self.pushProgram() | |
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703 if content and not varname: |
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704 self.pushProgram() |
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705 if msgid is not None: |
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706 self.pushProgram() |
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707 if content and varname: |
| 1049 | 708 self.pushProgram() |
| 709 if todo and position != (None, None): | |
| 710 todo["position"] = position | |
| 711 self.todoPush(todo) | |
| 712 if isend: | |
| 713 self.emitEndElement(name, isend) | |
| 714 | |
| 715 def emitEndElement(self, name, isend=0, implied=0): | |
| 716 todo = self.todoPop() | |
| 717 if not todo: | |
| 718 # Shortcut | |
| 719 if not isend: | |
| 720 self.emitEndTag(name) | |
| 721 return | |
| 722 | |
| 723 self.position = position = todo.get("position", (None, None)) | |
| 724 defineMacro = todo.get("defineMacro") | |
| 725 useMacro = todo.get("useMacro") | |
| 726 defineSlot = todo.get("defineSlot") | |
| 727 fillSlot = todo.get("fillSlot") | |
| 728 repeat = todo.get("repeat") | |
| 729 content = todo.get("content") | |
| 730 replace = todo.get("replace") | |
| 731 condition = todo.get("condition") | |
| 732 onError = todo.get("onError") | |
| 733 define = todo.get("define") | |
| 734 repldict = todo.get("repldict", {}) | |
| 735 scope = todo.get("scope") | |
| 736 optTag = todo.get("optional tag") | |
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737 msgid = todo.get('msgid') |
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738 i18ncontext = todo.get("i18ncontext") |
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739 varname = todo.get('i18nvar') |
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740 i18ndata = todo.get('i18ndata') |
| 1049 | 741 |
| 742 if implied > 0: | |
| 743 if defineMacro or useMacro or defineSlot or fillSlot: | |
| 744 exc = METALError | |
| 745 what = "METAL" | |
| 746 else: | |
| 747 exc = TALError | |
| 748 what = "TAL" | |
| 749 raise exc("%s attributes on <%s> require explicit </%s>" % | |
| 750 (what, name, name), position) | |
| 751 | |
|
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752 # If there's no tal:content or tal:replace in the tag with the |
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753 # i18n:name, tal:replace is the default. |
| 1049 | 754 if content: |
| 755 self.emitSubstitution(content, {}) | |
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756 # If we're looking at an implicit msgid, emit the insertTranslation |
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757 # opcode now, so that the end tag doesn't become part of the implicit |
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758 # msgid. If we're looking at an explicit msgid, it's better to emit |
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759 # the opcode after the i18nVariable opcode so we can better handle |
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760 # tags with both of them in them (and in the latter case, the contents |
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761 # would be thrown away for msgid purposes). |
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762 # |
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763 # Still, we should emit insertTranslation opcode before i18nVariable |
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764 # in case tal:content, i18n:translate and i18n:name in the same tag |
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765 if msgid is not None: |
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766 if (not varname) or ( |
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767 varname and (varname[1] == I18N_CONTENT)): |
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768 self.emitTranslation(msgid, i18ndata) |
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769 self.i18nLevel -= 1 |
| 1049 | 770 if optTag: |
| 771 self.emitOptTag(name, optTag, isend) | |
| 772 elif not isend: | |
|
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773 # If we're processing the end tag for a tag that contained |
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774 # i18n:name, we need to make sure that optimize() won't collect |
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775 # immediately following end tags into the same rawtextOffset, so |
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776 # put a spacer here that the optimizer will recognize. |
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777 if varname: |
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778 self.emit('noop') |
| 1049 | 779 self.emitEndTag(name) |
|
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780 # If i18n:name appeared in the same tag as tal:replace then we're |
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781 # going to do the substitution a little bit differently. The results |
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782 # of the expression go into the i18n substitution dictionary. |
| 1049 | 783 if replace: |
| 784 self.emitSubstitution(replace, repldict) | |
|
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785 elif varname: |
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786 # o varname[0] is the variable name |
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787 # o varname[1] is either |
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788 # - I18N_REPLACE for implicit tal:replace |
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789 # - I18N_CONTENT for tal:content |
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790 # - I18N_EXPRESSION for explicit tal:replace |
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791 # o varname[2] will be None for the first two actions and the |
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792 # replacement tal expression for the third action. |
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793 assert (varname[1] |
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794 in [I18N_REPLACE, I18N_CONTENT, I18N_EXPRESSION]) |
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795 self.emitI18nVariable(varname) |
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796 # Do not test for "msgid is not None", i.e. we only want to test for |
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797 # explicit msgids here. See comment above. |
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798 if msgid is not None: |
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799 # in case tal:content, i18n:translate and i18n:name in the |
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800 # same tag insertTranslation opcode has already been |
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801 # emitted |
|
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802 if varname and (varname[1] != I18N_CONTENT): |
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803 self.emitTranslation(msgid, i18ndata) |
| 1049 | 804 if repeat: |
| 805 self.emitRepeat(repeat) | |
| 806 if condition: | |
| 807 self.emitCondition(condition) | |
| 808 if onError: | |
|
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809 self.emitOnError(name, onError, optTag and optTag[1], isend) |
| 1049 | 810 if scope: |
| 811 self.emit("endScope") | |
|
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812 if i18ncontext: |
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813 self.emit("endI18nContext") |
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814 assert self.i18nContext.parent is not None |
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815 self.i18nContext = self.i18nContext.parent |
| 1049 | 816 if defineSlot: |
| 817 self.emitDefineSlot(defineSlot) | |
| 818 if fillSlot: | |
| 819 self.emitFillSlot(fillSlot) | |
| 820 if useMacro: | |
| 821 self.emitUseMacro(useMacro) | |
| 822 if defineMacro: | |
| 823 self.emitDefineMacro(defineMacro) | |
| 824 | |
|
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825 |
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826 def _parseI18nAttributes(i18nattrs, attrlist, repldict, position, |
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827 xml, source_file): |
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828 |
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829 def addAttribute(dic, attr, msgid, position, xml): |
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830 if not xml: |
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831 attr = attr.lower() |
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832 if attr in dic: |
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833 raise TALError( |
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834 "attribute may only be specified once in i18n:attributes: " |
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835 + attr, |
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836 position) |
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837 dic[attr] = msgid |
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838 |
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839 d = {} |
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840 if ';' in i18nattrs: |
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841 i18nattrlist = i18nattrs.split(';') |
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842 i18nattrlist = [attr.strip().split() |
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2005
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843 for attr in i18nattrlist if attr.strip()] |
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844 for parts in i18nattrlist: |
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845 if len(parts) > 2: |
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Richard Jones <richard@users.sourceforge.net>
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846 raise TALError("illegal i18n:attributes specification: %r" |
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847 % parts, position) |
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848 if len(parts) == 2: |
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849 attr, msgid = parts |
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850 else: |
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851 # len(parts) == 1 |
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2005
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852 attr = parts[0] |
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853 msgid = None |
|
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Richard Jones <richard@users.sourceforge.net>
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854 addAttribute(d, attr, msgid, position, xml) |
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2005
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|
855 else: |
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8c2402a78bb0
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Richard Jones <richard@users.sourceforge.net>
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2005
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856 i18nattrlist = i18nattrs.split() |
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Richard Jones <richard@users.sourceforge.net>
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857 if len(i18nattrlist) == 2: |
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858 staticattrs = [attr[0] for attr in attrlist if len(attr) == 2] |
|
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2005
diff
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859 if (not i18nattrlist[1] in staticattrs) and ( |
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Richard Jones <richard@users.sourceforge.net>
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860 not i18nattrlist[1] in repldict): |
|
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Richard Jones <richard@users.sourceforge.net>
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861 attr, msgid = i18nattrlist |
|
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862 addAttribute(d, attr, msgid, position, xml) |
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863 else: |
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Richard Jones <richard@users.sourceforge.net>
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864 msgid = None |
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865 for attr in i18nattrlist: |
|
8c2402a78bb0
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866 addAttribute(d, attr, msgid, position, xml) |
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867 else: |
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868 msgid = None |
|
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Richard Jones <richard@users.sourceforge.net>
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|
869 for attr in i18nattrlist: |
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Richard Jones <richard@users.sourceforge.net>
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870 addAttribute(d, attr, msgid, position, xml) |
|
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|
871 return d |
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|
872 |
| 1049 | 873 def test(): |
| 874 t = TALGenerator() | |
| 875 t.pushProgram() | |
| 876 t.emit("bar") | |
| 877 p = t.popProgram() | |
| 878 t.emit("foo", p) | |
| 879 | |
| 880 if __name__ == "__main__": | |
| 881 test() |