code-b975da59cd11/roundup/cgi/.cvsignore0000644000000000000000000000002407640246271016200 0ustar 00000000000000*.pyc *.pyo *.cover code-b975da59cd11/roundup/cgi/MultiMapping.py0000644000000000000000000000132207640246271017162 0ustar 00000000000000import operator class MultiMapping: def __init__(self, *stores): self.stores = list(stores) def __getitem__(self, key): for store in self.stores: if store.has_key(key): return store[key] raise KeyError, key _marker = [] def get(self, key, default=_marker): for store in self.stores: if store.has_key(key): return store[key] if default is self._marker: raise KeyError, key return default def __len__(self): return reduce(operator.add, [len(x) for x in stores], 0) def push(self, store): self.stores.append(store) def pop(self): return self.stores.pop() code-b975da59cd11/roundup/cgi/PageTemplates/.cvsignore0000644000000000000000000000001407640246271020732 0ustar 00000000000000*.pyc *.pyo code-b975da59cd11/roundup/cgi/PageTemplates/ComputedAttribute.py0000644000000000000000000000053707640246271022762 0ustar 00000000000000class ComputedAttribute: def __init__(self, callable, level): self.callable = callable self.level = level def __of__(self, *args): if self.level > 0: return self.callable if isinstance(self.callable, type('')): return getattr(args[0], self.callable) return self.callable(*args) code-b975da59cd11/roundup/cgi/PageTemplates/Expressions.py0000644000000000000000000002457507640246271021650 0ustar 00000000000000############################################################################## # # Copyright (c) 2001 Zope Corporation and Contributors. All Rights Reserved. # # This software is subject to the provisions of the Zope Public License, # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution. # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS # FOR A PARTICULAR PURPOSE # ############################################################################## """Page Template Expression Engine Page Template-specific implementation of TALES, with handlers for Python expressions, string literals, and paths. Modified for Roundup 0.5 release: - Removed all Zope-specific code (doesn't even try to import that stuff now) - Removed all Acquisition - Made traceback info more informative """ __version__='$Revision: 1.8 $'[11:-2] import re, sys from TALES import Engine, CompilerError, _valid_name, NAME_RE, \ Undefined, Default, _parse_expr from string import strip, split, join, replace, lstrip _engine = None def getEngine(): global _engine if _engine is None: from PathIterator import Iterator _engine = Engine(Iterator) installHandlers(_engine) return _engine def installHandlers(engine): reg = engine.registerType pe = PathExpr for pt in ('standard', 'path', 'exists', 'nocall'): reg(pt, pe) reg('string', StringExpr) reg('python', PythonExpr) reg('not', NotExpr) reg('defer', DeferExpr) from PythonExpr import getSecurityManager, PythonExpr try: from zExceptions import Unauthorized except ImportError: Unauthorized = "Unauthorized" def call_with_ns(f, ns, arg=1): if arg==2: return f(None, ns) else: return f(ns) class _SecureModuleImporter: """Simple version of the importer for use with trusted code.""" __allow_access_to_unprotected_subobjects__ = 1 def __getitem__(self, module): __import__(module) return sys.modules[module] Undefs = (Undefined, AttributeError, KeyError, TypeError, IndexError, Unauthorized) def render(ob, ns): """ Calls the object, possibly a document template, or just returns it if not callable. (From DT_Util.py) """ if hasattr(ob, '__render_with_namespace__'): ob = call_with_ns(ob.__render_with_namespace__, ns) else: base = ob if callable(base): try: if getattr(base, 'isDocTemp', 0): ob = call_with_ns(ob, ns, 2) else: ob = ob() except AttributeError, n: if str(n) != '__call__': raise return ob class SubPathExpr: def __init__(self, path): self._path = path = split(strip(path), '/') self._base = base = path.pop(0) if not _valid_name(base): raise CompilerError, 'Invalid variable name "%s"' % base # Parse path self._dp = dp = [] for i in range(len(path)): e = path[i] if e[:1] == '?' and _valid_name(e[1:]): dp.append((i, e[1:])) dp.reverse() def _eval(self, econtext, list=list, isinstance=isinstance, StringType=type('')): vars = econtext.vars path = self._path if self._dp: path = list(path) # Copy! for i, varname in self._dp: val = vars[varname] if isinstance(val, StringType): path[i] = val else: # If the value isn't a string, assume it's a sequence # of path names. path[i:i+1] = list(val) base = self._base __traceback_info__ = 'path expression "%s"'%('/'.join(self._path)) if base == 'CONTEXTS': ob = econtext.contexts else: ob = vars[base] if isinstance(ob, DeferWrapper): ob = ob() if path: ob = restrictedTraverse(ob, path, getSecurityManager()) return ob class PathExpr: def __init__(self, name, expr, engine): self._s = expr self._name = name self._hybrid = 0 paths = split(expr, '|') self._subexprs = [] add = self._subexprs.append for i in range(len(paths)): path = lstrip(paths[i]) if _parse_expr(path): # This part is the start of another expression type, # so glue it back together and compile it. add(engine.compile(lstrip(join(paths[i:], '|')))) self._hybrid = 1 break add(SubPathExpr(path)._eval) def _exists(self, econtext): for expr in self._subexprs: try: expr(econtext) except Undefs: pass else: return 1 return 0 def _eval(self, econtext, isinstance=isinstance, StringType=type(''), render=render): for expr in self._subexprs[:-1]: # Try all but the last subexpression, skipping undefined ones. try: ob = expr(econtext) except Undefs: pass else: break else: # On the last subexpression allow exceptions through, and # don't autocall if the expression was not a subpath. ob = self._subexprs[-1](econtext) if self._hybrid: return ob if self._name == 'nocall' or isinstance(ob, StringType): return ob # Return the rendered object return render(ob, econtext.vars) def __call__(self, econtext): if self._name == 'exists': return self._exists(econtext) return self._eval(econtext) def __str__(self): return '%s expression %s' % (self._name, `self._s`) def __repr__(self): return '%s:%s' % (self._name, `self._s`) _interp = re.compile(r'\$(%(n)s)|\${(%(n)s(?:/%(n)s)*)}' % {'n': NAME_RE}) class StringExpr: def __init__(self, name, expr, engine): self._s = expr if '%' in expr: expr = replace(expr, '%', '%%') self._vars = vars = [] if '$' in expr: parts = [] for exp in split(expr, '$$'): if parts: parts.append('$') m = _interp.search(exp) while m is not None: parts.append(exp[:m.start()]) parts.append('%s') vars.append(PathExpr('path', m.group(1) or m.group(2), engine)) exp = exp[m.end():] m = _interp.search(exp) if '$' in exp: raise CompilerError, ( '$ must be doubled or followed by a simple path') parts.append(exp) expr = join(parts, '') self._expr = expr def __call__(self, econtext): vvals = [] for var in self._vars: v = var(econtext) if isinstance(v, Exception): raise v vvals.append(v) return self._expr % tuple(vvals) def __str__(self): return 'string expression %s' % `self._s` def __repr__(self): return 'string:%s' % `self._s` class NotExpr: def __init__(self, name, expr, compiler): self._s = expr = lstrip(expr) self._c = compiler.compile(expr) def __call__(self, econtext): return not econtext.evaluateBoolean(self._c) def __repr__(self): return 'not:%s' % `self._s` class DeferWrapper: def __init__(self, expr, econtext): self._expr = expr self._econtext = econtext def __str__(self): return str(self()) def __call__(self): return self._expr(self._econtext) class DeferExpr: def __init__(self, name, expr, compiler): self._s = expr = lstrip(expr) self._c = compiler.compile(expr) def __call__(self, econtext): return DeferWrapper(self._c, econtext) def __repr__(self): return 'defer:%s' % `self._s` class TraversalError: def __init__(self, path, name): self.path = path self.name = name def restrictedTraverse(self, path, securityManager, get=getattr, has=hasattr, N=None, M=[], TupleType=type(()) ): REQUEST = {'path': path} REQUEST['TraversalRequestNameStack'] = path = path[:] # Copy! if not path[0]: # If the path starts with an empty string, go to the root first. self = self.getPhysicalRoot() path.pop(0) path.reverse() object = self #print 'TRAVERSE', (object, path) done = [] while path: name = path.pop() __traceback_info__ = TraversalError(done, name) # if isinstance(name, TupleType): # object = apply(object, name) # continue # if name[0] == '_': # # Never allowed in a URL. # raise AttributeError, name # Try an attribute. o = get(object, name, M) # print '...', (object, name, M, o) if o is M: # Try an item. # print '... try an item' try: # XXX maybe in Python 2.2 we can just check whether # the object has the attribute "__getitem__" # instead of blindly catching exceptions. o = object[name] except AttributeError, exc: if str(exc).find('__getitem__') >= 0: # The object does not support the item interface. # Try to re-raise the original attribute error. # XXX I think this only happens with # ExtensionClass instances. get(object, name) raise except TypeError, exc: if str(exc).find('unsubscriptable') >= 0: # The object does not support the item interface. # Try to re-raise the original attribute error. # XXX This is sooooo ugly. get(object, name) raise #print '... object is now', `o` object = o done.append((name, o)) return object code-b975da59cd11/roundup/cgi/PageTemplates/MultiMapping.py0000644000000000000000000000151207640246271021716 0ustar 00000000000000import operator class MultiMapping: def __init__(self, *stores): self.stores = list(stores) def __getitem__(self, key): for store in self.stores: if store.has_key(key): return store[key] raise KeyError, key _marker = [] def get(self, key, default=_marker): for store in self.stores: if store.has_key(key): return store[key] if default is self._marker: raise KeyError, key return default def __len__(self): return reduce(operator.add, [len(x) for x in stores], 0) def push(self, store): self.stores.append(store) def pop(self): return self.stores.pop() def items(self): l = [] for store in self.stores: l = l + store.items() return l code-b975da59cd11/roundup/cgi/PageTemplates/PageTemplate.py0000755000000000000000000001475707640246271021702 0ustar 00000000000000############################################################################## # # Copyright (c) 2001 Zope Corporation and Contributors. All Rights Reserved. # # This software is subject to the provisions of the Zope Public License, # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution. # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS # FOR A PARTICULAR PURPOSE # ############################################################################## """Page Template module HTML- and XML-based template objects using TAL, TALES, and METAL. Modified for Roundup 0.5 release: - changed imports to import from roundup.cgi """ __version__='$Revision: 1.3 $'[11:-2] import sys from roundup.cgi.TAL.TALParser import TALParser from roundup.cgi.TAL.HTMLTALParser import HTMLTALParser from roundup.cgi.TAL.TALGenerator import TALGenerator from roundup.cgi.TAL.TALInterpreter import TALInterpreter from Expressions import getEngine from string import join, strip, rstrip, split, replace, lower, find from cStringIO import StringIO class PageTemplate: "Page Templates using TAL, TALES, and METAL" content_type = 'text/html' expand = 0 _v_errors = () _v_warnings = () _v_program = None _v_macros = None _v_cooked = 0 id = '(unknown)' _text = '' _error_start = '') if errend >= 0: text = text[errend + 4:] if self._text != text: self._text = text self._cook() def read(self): if not self._v_cooked: self._cook() if not self._v_errors: if not self.expand: return self._text try: return self.pt_render(source=1) except: return ('%s\n Macro expansion failed\n %s\n-->\n%s' % (self._error_start, "%s: %s" % sys.exc_info()[:2], self._text) ) return ('%s\n %s\n-->\n%s' % (self._error_start, join(self._v_errors, '\n '), self._text)) def _cook(self): """Compile the TAL and METAL statments. Cooking must not fail due to compilation errors in templates. """ source_file = self.pt_source_file() if self.html(): gen = TALGenerator(getEngine(), xml=0, source_file=source_file) parser = HTMLTALParser(gen) else: gen = TALGenerator(getEngine(), source_file=source_file) parser = TALParser(gen) self._v_errors = () try: parser.parseString(self._text) self._v_program, self._v_macros = parser.getCode() except: self._v_errors = ["Compilation failed", "%s: %s" % sys.exc_info()[:2]] self._v_warnings = parser.getWarnings() self._v_cooked = 1 def html(self): if not hasattr(getattr(self, 'aq_base', self), 'is_html'): return self.content_type == 'text/html' return self.is_html class _ModuleImporter: def __getitem__(self, module): mod = __import__(module) path = split(module, '.') for name in path[1:]: mod = getattr(mod, name) return mod ModuleImporter = _ModuleImporter() class PTRuntimeError(RuntimeError): '''The Page Template has template errors that prevent it from rendering.''' pass class PageTemplateTracebackSupplement: #__implements__ = ITracebackSupplement def __init__(self, pt): self.object = pt w = pt.pt_warnings() e = pt.pt_errors() if e: w = list(w) + list(e) self.warnings = w code-b975da59cd11/roundup/cgi/PageTemplates/PathIterator.py0000644000000000000000000000320207640246271021714 0ustar 00000000000000############################################################################## # # Copyright (c) 2001 Zope Corporation and Contributors. All Rights Reserved. # # This software is subject to the provisions of the Zope Public License, # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution. # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS # FOR A PARTICULAR PURPOSE # ############################################################################## """Path Iterator A TALES Iterator with the ability to use first() and last() on subpaths of elements. """ __version__='$Revision: 1.1 $'[11:-2] import TALES from Expressions import restrictedTraverse, Undefs, getSecurityManager from string import split class Iterator(TALES.Iterator): def __bobo_traverse__(self, REQUEST, name): if name in ('first', 'last'): path = REQUEST['TraversalRequestNameStack'] names = list(path) names.reverse() path[:] = [tuple(names)] return getattr(self, name) def same_part(self, name, ob1, ob2): if name is None: return ob1 == ob2 if isinstance(name, type('')): name = split(name, '/') name = filter(None, name) securityManager = getSecurityManager() try: ob1 = restrictedTraverse(ob1, name, securityManager) ob2 = restrictedTraverse(ob2, name, securityManager) except Undefs: return 0 return ob1 == ob2 code-b975da59cd11/roundup/cgi/PageTemplates/PythonExpr.py0000644000000000000000000000554107640246271021436 0ustar 00000000000000############################################################################## # # Copyright (c) 2001 Zope Corporation and Contributors. All Rights Reserved. # # This software is subject to the provisions of the Zope Public License, # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution. # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS # FOR A PARTICULAR PURPOSE # ############################################################################## """Generic Python Expression Handler Modified for Roundup 0.5 release: - more informative traceback info """ __version__='$Revision: 1.4 $'[11:-2] from TALES import CompilerError from string import strip, split, join, replace, lstrip from sys import exc_info class getSecurityManager: '''Null security manager''' def validate(self, *args, **kwargs): return 1 addContext = removeContext = validateValue = validate class PythonExpr: def __init__(self, name, expr, engine): self.expr = expr = replace(strip(expr), '\n', ' ') try: d = {} exec 'def f():\n return %s\n' % strip(expr) in d self._f = d['f'] except: raise CompilerError, ('Python expression error:\n' '%s: %s') % exc_info()[:2] self._get_used_names() def _get_used_names(self): self._f_varnames = vnames = [] for vname in self._f.func_code.co_names: if vname[0] not in '$_': vnames.append(vname) def _bind_used_names(self, econtext): # Bind template variables names = {} vars = econtext.vars getType = econtext.getCompiler().getTypes().get for vname in self._f_varnames: has, val = vars.has_get(vname) if not has: has = val = getType(vname) if has: val = ExprTypeProxy(vname, val, econtext) if has: names[vname] = val return names def __call__(self, econtext): __traceback_info__ = 'python expression "%s"'%self.expr f = self._f f.func_globals.update(self._bind_used_names(econtext)) return f() def __str__(self): return 'Python expression "%s"' % self.expr def __repr__(self): return '' % self.expr class ExprTypeProxy: '''Class that proxies access to an expression type handler''' def __init__(self, name, handler, econtext): self._name = name self._handler = handler self._econtext = econtext def __call__(self, text): return self._handler(self._name, text, self._econtext.getCompiler())(self._econtext) code-b975da59cd11/roundup/cgi/PageTemplates/README.txt0000644000000000000000000000064607640246271020443 0ustar 00000000000000See the ZPT project Wiki for more information about Page Templates, or the download page for installation instructions and the most recent version of the software. This Product requires the TAL and ZTUtils packages to be installed in your Python path (not Products). See the links above for more information. code-b975da59cd11/roundup/cgi/PageTemplates/TALES.py0000644000000000000000000002064307640246271020166 0ustar 00000000000000############################################################################## # # Copyright (c) 2001 Zope Corporation and Contributors. All Rights Reserved. # # This software is subject to the provisions of the Zope Public License, # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution. # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS # FOR A PARTICULAR PURPOSE # ############################################################################## """TALES An implementation of a generic TALES engine Modified for Roundup 0.5 release: - changed imports to import from roundup.cgi """ __version__='$Revision: 1.5 $'[11:-2] import re, sys from roundup.cgi import ZTUtils from MultiMapping import MultiMapping StringType = type('') NAME_RE = r"[a-zA-Z][a-zA-Z0-9_]*" _parse_expr = re.compile(r"(%s):" % NAME_RE).match _valid_name = re.compile('%s$' % NAME_RE).match class TALESError(Exception): """Error during TALES expression evaluation""" class Undefined(TALESError): '''Exception raised on traversal of an undefined path''' class RegistrationError(Exception): '''TALES Type Registration Error''' class CompilerError(Exception): '''TALES Compiler Error''' class Default: '''Retain Default''' Default = Default() _marker = [] class SafeMapping(MultiMapping): '''Mapping with security declarations and limited method exposure. Since it subclasses MultiMapping, this class can be used to wrap one or more mapping objects. Restricted Python code will not be able to mutate the SafeMapping or the wrapped mappings, but will be able to read any value. ''' __allow_access_to_unprotected_subobjects__ = 1 push = pop = None _push = MultiMapping.push _pop = MultiMapping.pop def has_get(self, key, _marker=[]): v = self.get(key, _marker) return v is not _marker, v class Iterator(ZTUtils.Iterator): def __init__(self, name, seq, context): ZTUtils.Iterator.__init__(self, seq) self.name = name self._context = context def next(self): if ZTUtils.Iterator.next(self): self._context.setLocal(self.name, self.item) return 1 return 0 class ErrorInfo: """Information about an exception passed to an on-error handler.""" __allow_access_to_unprotected_subobjects__ = 1 def __init__(self, err, position=(None, None)): if isinstance(err, Exception): self.type = err.__class__ self.value = err else: self.type = err self.value = None self.lineno = position[0] self.offset = position[1] class Engine: '''Expression Engine An instance of this class keeps a mutable collection of expression type handlers. It can compile expression strings by delegating to these handlers. It can provide an expression Context, which is capable of holding state and evaluating compiled expressions. ''' Iterator = Iterator def __init__(self, Iterator=None): self.types = {} if Iterator is not None: self.Iterator = Iterator def registerType(self, name, handler): if not _valid_name(name): raise RegistrationError, 'Invalid Expression type "%s".' % name types = self.types if types.has_key(name): raise RegistrationError, ( 'Multiple registrations for Expression type "%s".' % name) types[name] = handler def getTypes(self): return self.types def compile(self, expression): m = _parse_expr(expression) if m: type = m.group(1) expr = expression[m.end():] else: type = "standard" expr = expression try: handler = self.types[type] except KeyError: raise CompilerError, ( 'Unrecognized expression type "%s".' % type) return handler(type, expr, self) def getContext(self, contexts=None, **kwcontexts): if contexts is not None: if kwcontexts: kwcontexts.update(contexts) else: kwcontexts = contexts return Context(self, kwcontexts) def getCompilerError(self): return CompilerError class Context: '''Expression Context An instance of this class holds context information that it can use to evaluate compiled expressions. ''' _context_class = SafeMapping position = (None, None) source_file = None def __init__(self, compiler, contexts): self._compiler = compiler self.contexts = contexts contexts['nothing'] = None contexts['default'] = Default self.repeat_vars = rv = {} # Wrap this, as it is visible to restricted code contexts['repeat'] = rep = self._context_class(rv) contexts['loop'] = rep # alias self.global_vars = gv = contexts.copy() self.local_vars = lv = {} self.vars = self._context_class(gv, lv) # Keep track of what needs to be popped as each scope ends. self._scope_stack = [] def getCompiler(self): return self._compiler def beginScope(self): self._scope_stack.append([self.local_vars.copy()]) def endScope(self): scope = self._scope_stack.pop() self.local_vars = lv = scope[0] v = self.vars v._pop() v._push(lv) # Pop repeat variables, if any i = len(scope) - 1 while i: name, value = scope[i] if value is None: del self.repeat_vars[name] else: self.repeat_vars[name] = value i = i - 1 def setLocal(self, name, value): self.local_vars[name] = value def setGlobal(self, name, value): self.global_vars[name] = value def setRepeat(self, name, expr): expr = self.evaluate(expr) if not expr: return self._compiler.Iterator(name, (), self) it = self._compiler.Iterator(name, expr, self) old_value = self.repeat_vars.get(name) self._scope_stack[-1].append((name, old_value)) self.repeat_vars[name] = it return it def evaluate(self, expression, isinstance=isinstance, StringType=StringType): if isinstance(expression, StringType): expression = self._compiler.compile(expression) __traceback_supplement__ = ( TALESTracebackSupplement, self, expression) v = expression(self) return v evaluateValue = evaluate evaluateBoolean = evaluate def evaluateText(self, expr): text = self.evaluate(expr) if text is Default or text is None: return text return str(text) def evaluateStructure(self, expr): return self.evaluate(expr) evaluateStructure = evaluate def evaluateMacro(self, expr): # XXX Should return None or a macro definition return self.evaluate(expr) evaluateMacro = evaluate def createErrorInfo(self, err, position): return ErrorInfo(err, position) def getDefault(self): return Default def setSourceFile(self, source_file): self.source_file = source_file def setPosition(self, position): self.position = position class TALESTracebackSupplement: """Implementation of ITracebackSupplement""" def __init__(self, context, expression): self.context = context self.source_url = context.source_file self.line = context.position[0] self.column = context.position[1] self.expression = repr(expression) def getInfo(self, as_html=0): import pprint data = self.context.contexts.copy() s = pprint.pformat(data) if not as_html: return ' - Names:\n %s' % string.replace(s, '\n', '\n ') else: from cgi import escape return 'Names:
%s
' % (escape(s)) return None class SimpleExpr: '''Simple example of an expression type handler''' def __init__(self, name, expr, engine): self._name = name self._expr = expr def __call__(self, econtext): return self._name, self._expr def __repr__(self): return '' % (self._name, `self._expr`) code-b975da59cd11/roundup/cgi/PageTemplates/__init__.py0000644000000000000000000000204207640246271021046 0ustar 00000000000000############################################################################## # # Copyright (c) 2001 Zope Corporation and Contributors. All Rights Reserved. # # This software is subject to the provisions of the Zope Public License, # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution. # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS # FOR A PARTICULAR PURPOSE # ############################################################################## __doc__='''Package wrapper for Page Templates This wrapper allows the Page Template modules to be segregated in a separate package. $Id: __init__.py,v 1.1 2002-09-05 00:37:09 richard Exp $''' __version__='$$'[11:-2] # Placeholder for Zope Product data misc_ = {} def initialize(context): # Import lazily, and defer initialization to the module import ZopePageTemplate ZopePageTemplate.initialize(context) code-b975da59cd11/roundup/cgi/TAL/.cvsignore0000644000000000000000000000002207640246271016616 0ustar 00000000000000.path *.pyc *.pyo code-b975da59cd11/roundup/cgi/TAL/HTMLParser.py0000644000000000000000000003314207640246271017122 0ustar 00000000000000"""A parser for HTML and XHTML.""" # This file is based on sgmllib.py, but the API is slightly different. # XXX There should be a way to distinguish between PCDATA (parsed # character data -- the normal case), RCDATA (replaceable character # data -- only char and entity references and end tags are special) # and CDATA (character data -- only end tags are special). import markupbase import re import string # Regular expressions used for parsing interesting_normal = re.compile('[&<]') interesting_cdata = re.compile(r'<(/|\Z)') incomplete = re.compile('&[a-zA-Z#]') entityref = re.compile('&([a-zA-Z][-.a-zA-Z0-9]*)[^a-zA-Z0-9]') charref = re.compile('&#(?:[0-9]+|[xX][0-9a-fA-F]+)[^0-9a-fA-F]') starttagopen = re.compile('<[a-zA-Z]') piclose = re.compile('>') endtagopen = re.compile('') tagfind = re.compile('[a-zA-Z][-.a-zA-Z0-9:_]*') attrfind = re.compile( r'\s*([a-zA-Z_][-.:a-zA-Z_0-9]*)(\s*=\s*' r'(\'[^\']*\'|"[^"]*"|[-a-zA-Z0-9./:;+*%?!&$\(\)_#=~]*))?') locatestarttagend = re.compile(r""" <[a-zA-Z][-.a-zA-Z0-9:_]* # tag name (?:\s+ # whitespace before attribute name (?:[a-zA-Z_][-.:a-zA-Z0-9_]* # attribute name (?:\s*=\s* # value indicator (?:'[^']*' # LITA-enclosed value |\"[^\"]*\" # LIT-enclosed value |[^'\">\s]+ # bare value ) )? ) )* \s* # trailing whitespace """, re.VERBOSE) endendtag = re.compile('>') endtagfind = re.compile('') class HTMLParseError(Exception): """Exception raised for all parse errors.""" def __init__(self, msg, position=(None, None)): assert msg self.msg = msg self.lineno = position[0] self.offset = position[1] def __str__(self): result = self.msg if self.lineno is not None: result = result + ", at line %d" % self.lineno if self.offset is not None: result = result + ", column %d" % (self.offset + 1) return result def _contains_at(s, sub, pos): return s[pos:pos+len(sub)] == sub class HTMLParser(markupbase.ParserBase): """Find tags and other markup and call handler functions. Usage: p = HTMLParser() p.feed(data) ... p.close() Start tags are handled by calling self.handle_starttag() or self.handle_startendtag(); end tags by self.handle_endtag(). The data between tags is passed from the parser to the derived class by calling self.handle_data() with the data as argument (the data may be split up in arbitrary chunks). Entity references are passed by calling self.handle_entityref() with the entity reference as the argument. Numeric character references are passed to self.handle_charref() with the string containing the reference as the argument. """ CDATA_CONTENT_ELEMENTS = ("script", "style") def __init__(self): """Initialize and reset this instance.""" self.reset() def reset(self): """Reset this instance. Loses all unprocessed data.""" self.rawdata = '' self.stack = [] self.lasttag = '???' self.interesting = interesting_normal markupbase.ParserBase.reset(self) def feed(self, data): """Feed data to the parser. Call this as often as you want, with as little or as much text as you want (may include '\n'). """ self.rawdata = self.rawdata + data self.goahead(0) def close(self): """Handle any buffered data.""" self.goahead(1) def error(self, message): raise HTMLParseError(message, self.getpos()) __starttag_text = None def get_starttag_text(self): """Return full source of start tag: '<...>'.""" return self.__starttag_text cdata_endtag = None def set_cdata_mode(self, endtag=None): self.cdata_endtag = endtag self.interesting = interesting_cdata def clear_cdata_mode(self): self.cdata_endtag = None self.interesting = interesting_normal # Internal -- handle data as far as reasonable. May leave state # and data to be processed by a subsequent call. If 'end' is # true, force handling all data as if followed by EOF marker. def goahead(self, end): rawdata = self.rawdata i = 0 n = len(rawdata) while i < n: match = self.interesting.search(rawdata, i) # < or & if match: j = match.start() else: j = n if i < j: self.handle_data(rawdata[i:j]) i = self.updatepos(i, j) if i == n: break if rawdata[i] == '<': if starttagopen.match(rawdata, i): # < + letter k = self.parse_starttag(i) elif endtagopen.match(rawdata, i): # if not match: return -1 j = match.start() self.handle_pi(rawdata[i+2: j]) j = match.end() return j # Internal -- handle starttag, return end or -1 if not terminated def parse_starttag(self, i): self.__starttag_text = None endpos = self.check_for_whole_start_tag(i) if endpos < 0: return endpos rawdata = self.rawdata self.__starttag_text = rawdata[i:endpos] # Now parse the data between i+1 and j into a tag and attrs attrs = [] match = tagfind.match(rawdata, i+1) assert match, 'unexpected call to parse_starttag()' k = match.end() self.lasttag = tag = string.lower(rawdata[i+1:k]) while k < endpos: m = attrfind.match(rawdata, k) if not m: break attrname, rest, attrvalue = m.group(1, 2, 3) if not rest: attrvalue = None elif attrvalue[:1] == '\'' == attrvalue[-1:] or \ attrvalue[:1] == '"' == attrvalue[-1:]: attrvalue = attrvalue[1:-1] attrvalue = self.unescape(attrvalue) attrs.append((string.lower(attrname), attrvalue)) k = m.end() end = string.strip(rawdata[k:endpos]) if end not in (">", "/>"): lineno, offset = self.getpos() if "\n" in self.__starttag_text: lineno = lineno + string.count(self.__starttag_text, "\n") offset = len(self.__starttag_text) \ - string.rfind(self.__starttag_text, "\n") else: offset = offset + len(self.__starttag_text) self.error("junk characters in start tag: %s" % `rawdata[k:endpos][:20]`) if end[-2:] == '/>': # XHTML-style empty tag: self.handle_startendtag(tag, attrs) else: self.handle_starttag(tag, attrs) if tag in self.CDATA_CONTENT_ELEMENTS: self.set_cdata_mode(tag) return endpos # Internal -- check to see if we have a complete starttag; return end # or -1 if incomplete. def check_for_whole_start_tag(self, i): rawdata = self.rawdata m = locatestarttagend.match(rawdata, i) if m: j = m.end() next = rawdata[j:j+1] if next == ">": return j + 1 if next == "/": s = rawdata[j:j+2] if s == "/>": return j + 2 if s == "/": # buffer boundary return -1 # else bogus input self.updatepos(i, j + 1) self.error("malformed empty start tag") if next == "": # end of input return -1 if next in ("abcdefghijklmnopqrstuvwxyz=/" "ABCDEFGHIJKLMNOPQRSTUVWXYZ"): # end of input in or before attribute value, or we have the # '/' from a '/>' ending return -1 self.updatepos(i, j) self.error("malformed start tag") raise AssertionError("we should not get here!") # Internal -- parse endtag, return end or -1 if incomplete def parse_endtag(self, i): rawdata = self.rawdata assert rawdata[i:i+2] == " if not match: return -1 j = match.end() match = endtagfind.match(rawdata, i) # if not match: self.error("bad end tag: %s" % `rawdata[i:j]`) tag = string.lower(match.group(1)) if ( self.cdata_endtag is not None and tag != self.cdata_endtag): # Should be a mismatched end tag, but we'll treat it # as text anyway, since most HTML authors aren't # interested in the finer points of syntax. self.handle_data(match.group(0)) else: self.handle_endtag(tag) self.clear_cdata_mode() return j # Overridable -- finish processing of start+end tag: def handle_startendtag(self, tag, attrs): self.handle_starttag(tag, attrs) self.handle_endtag(tag) # Overridable -- handle start tag def handle_starttag(self, tag, attrs): pass # Overridable -- handle end tag def handle_endtag(self, tag): pass # Overridable -- handle character reference def handle_charref(self, name): pass # Overridable -- handle entity reference def handle_entityref(self, name): pass # Overridable -- handle data def handle_data(self, data): pass # Overridable -- handle comment def handle_comment(self, data): pass # Overridable -- handle declaration def handle_decl(self, decl): pass # Overridable -- handle processing instruction def handle_pi(self, data): pass def unknown_decl(self, data): self.error("unknown declaration: " + `data`) # Internal -- helper to remove special character quoting def unescape(self, s): if '&' not in s: return s s = string.replace(s, "<", "<") s = string.replace(s, ">", ">") s = string.replace(s, "'", "'") s = string.replace(s, """, '"') s = string.replace(s, "&", "&") # Must be last return s code-b975da59cd11/roundup/cgi/TAL/HTMLTALParser.py0000644000000000000000000002366407640246271017473 0ustar 00000000000000############################################################################## # # Copyright (c) 2001, 2002 Zope Corporation and Contributors. # All Rights Reserved. # # This software is subject to the provisions of the Zope Public License, # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution. # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS # FOR A PARTICULAR PURPOSE # ############################################################################## """ Parse HTML and compile to TALInterpreter intermediate code. """ import sys import string from TALGenerator import TALGenerator from TALDefs import ZOPE_METAL_NS, ZOPE_TAL_NS, METALError, TALError from HTMLParser import HTMLParser, HTMLParseError BOOLEAN_HTML_ATTRS = [ # List of Boolean attributes in HTML that may be given in # minimized form (e.g. rather than ) # From http://www.w3.org/TR/xhtml1/#guidelines (C.10) "compact", "nowrap", "ismap", "declare", "noshade", "checked", "disabled", "readonly", "multiple", "selected", "noresize", "defer" ] EMPTY_HTML_TAGS = [ # List of HTML tags with an empty content model; these are # rendered in minimized form, e.g. . # From http://www.w3.org/TR/xhtml1/#dtds "base", "meta", "link", "hr", "br", "param", "img", "area", "input", "col", "basefont", "isindex", "frame", ] PARA_LEVEL_HTML_TAGS = [ # List of HTML elements that close open paragraph-level elements # and are themselves paragraph-level. "h1", "h2", "h3", "h4", "h5", "h6", "p", ] BLOCK_CLOSING_TAG_MAP = { "tr": ("tr", "td", "th"), "td": ("td", "th"), "th": ("td", "th"), "li": ("li",), "dd": ("dd", "dt"), "dt": ("dd", "dt"), } BLOCK_LEVEL_HTML_TAGS = [ # List of HTML tags that denote larger sections than paragraphs. "blockquote", "table", "tr", "th", "td", "thead", "tfoot", "tbody", "noframe", "ul", "ol", "li", "dl", "dt", "dd", "div", ] TIGHTEN_IMPLICIT_CLOSE_TAGS = (PARA_LEVEL_HTML_TAGS + BLOCK_CLOSING_TAG_MAP.keys()) class NestingError(HTMLParseError): """Exception raised when elements aren't properly nested.""" def __init__(self, tagstack, endtag, position=(None, None)): self.endtag = endtag if tagstack: if len(tagstack) == 1: msg = ('Open tag <%s> does not match close tag ' % (tagstack[0], endtag)) else: msg = ('Open tags <%s> do not match close tag ' % (string.join(tagstack, '>, <'), endtag)) else: msg = 'No tags are open to match ' % endtag HTMLParseError.__init__(self, msg, position) class EmptyTagError(NestingError): """Exception raised when empty elements have an end tag.""" def __init__(self, tag, position=(None, None)): self.tag = tag msg = 'Close tag should be removed' % tag HTMLParseError.__init__(self, msg, position) class OpenTagError(NestingError): """Exception raised when a tag is not allowed in another tag.""" def __init__(self, tagstack, tag, position=(None, None)): self.tag = tag msg = 'Tag <%s> is not allowed in <%s>' % (tag, tagstack[-1]) HTMLParseError.__init__(self, msg, position) class HTMLTALParser(HTMLParser): # External API def __init__(self, gen=None): HTMLParser.__init__(self) if gen is None: gen = TALGenerator(xml=0) self.gen = gen self.tagstack = [] self.nsstack = [] self.nsdict = {'tal': ZOPE_TAL_NS, 'metal': ZOPE_METAL_NS} def parseFile(self, file): f = open(file) data = f.read() f.close() self.parseString(data) def parseString(self, data): self.feed(data) self.close() while self.tagstack: self.implied_endtag(self.tagstack[-1], 2) assert self.nsstack == [], self.nsstack def getCode(self): return self.gen.getCode() def getWarnings(self): return () # Overriding HTMLParser methods def handle_starttag(self, tag, attrs): self.close_para_tags(tag) self.scan_xmlns(attrs) tag, attrlist, taldict, metaldict = self.process_ns(tag, attrs) self.tagstack.append(tag) self.gen.emitStartElement(tag, attrlist, taldict, metaldict, self.getpos()) if tag in EMPTY_HTML_TAGS: self.implied_endtag(tag, -1) def handle_startendtag(self, tag, attrs): self.close_para_tags(tag) self.scan_xmlns(attrs) tag, attrlist, taldict, metaldict = self.process_ns(tag, attrs) if taldict.get("content"): self.gen.emitStartElement(tag, attrlist, taldict, metaldict, self.getpos()) self.gen.emitEndElement(tag, implied=-1) else: self.gen.emitStartElement(tag, attrlist, taldict, metaldict, self.getpos(), isend=1) self.pop_xmlns() def handle_endtag(self, tag): if tag in EMPTY_HTML_TAGS: # etc. in the source is an error raise EmptyTagError(tag, self.getpos()) self.close_enclosed_tags(tag) self.gen.emitEndElement(tag) self.pop_xmlns() self.tagstack.pop() def close_para_tags(self, tag): if tag in EMPTY_HTML_TAGS: return close_to = -1 if BLOCK_CLOSING_TAG_MAP.has_key(tag): blocks_to_close = BLOCK_CLOSING_TAG_MAP[tag] for i in range(len(self.tagstack)): t = self.tagstack[i] if t in blocks_to_close: if close_to == -1: close_to = i elif t in BLOCK_LEVEL_HTML_TAGS: close_to = -1 elif tag in PARA_LEVEL_HTML_TAGS + BLOCK_LEVEL_HTML_TAGS: i = len(self.tagstack) - 1 while i >= 0: closetag = self.tagstack[i] if closetag in BLOCK_LEVEL_HTML_TAGS: break if closetag in PARA_LEVEL_HTML_TAGS: if closetag != "p": raise OpenTagError(self.tagstack, tag, self.getpos()) close_to = i i = i - 1 if close_to >= 0: while len(self.tagstack) > close_to: self.implied_endtag(self.tagstack[-1], 1) def close_enclosed_tags(self, tag): if tag not in self.tagstack: raise NestingError(self.tagstack, tag, self.getpos()) while tag != self.tagstack[-1]: self.implied_endtag(self.tagstack[-1], 1) assert self.tagstack[-1] == tag def implied_endtag(self, tag, implied): assert tag == self.tagstack[-1] assert implied in (-1, 1, 2) isend = (implied < 0) if tag in TIGHTEN_IMPLICIT_CLOSE_TAGS: # Pick out trailing whitespace from the program, and # insert the close tag before the whitespace. white = self.gen.unEmitWhitespace() else: white = None self.gen.emitEndElement(tag, isend=isend, implied=implied) if white: self.gen.emitRawText(white) self.tagstack.pop() self.pop_xmlns() def handle_charref(self, name): self.gen.emitRawText("&#%s;" % name) def handle_entityref(self, name): self.gen.emitRawText("&%s;" % name) def handle_data(self, data): self.gen.emitRawText(data) def handle_comment(self, data): self.gen.emitRawText("" % data) def handle_decl(self, data): self.gen.emitRawText("" % data) def handle_pi(self, data): self.gen.emitRawText("" % data) # Internal thingies def scan_xmlns(self, attrs): nsnew = {} for key, value in attrs: if key[:6] == "xmlns:": nsnew[key[6:]] = value if nsnew: self.nsstack.append(self.nsdict) self.nsdict = self.nsdict.copy() self.nsdict.update(nsnew) else: self.nsstack.append(self.nsdict) def pop_xmlns(self): self.nsdict = self.nsstack.pop() def fixname(self, name): if ':' in name: prefix, suffix = string.split(name, ':', 1) if prefix == 'xmlns': nsuri = self.nsdict.get(suffix) if nsuri in (ZOPE_TAL_NS, ZOPE_METAL_NS): return name, name, prefix else: nsuri = self.nsdict.get(prefix) if nsuri == ZOPE_TAL_NS: return name, suffix, 'tal' elif nsuri == ZOPE_METAL_NS: return name, suffix, 'metal' return name, name, 0 def process_ns(self, name, attrs): attrlist = [] taldict = {} metaldict = {} name, namebase, namens = self.fixname(name) for item in attrs: key, value = item key, keybase, keyns = self.fixname(key) ns = keyns or namens # default to tag namespace if ns and ns != 'unknown': item = (key, value, ns) if ns == 'tal': if taldict.has_key(keybase): raise TALError("duplicate TAL attribute " + `keybase`, self.getpos()) taldict[keybase] = value elif ns == 'metal': if metaldict.has_key(keybase): raise METALError("duplicate METAL attribute " + `keybase`, self.getpos()) metaldict[keybase] = value attrlist.append(item) if namens in ('metal', 'tal'): taldict['tal tag'] = namens return name, attrlist, taldict, metaldict code-b975da59cd11/roundup/cgi/TAL/README.txt0000644000000000000000000000673607640246271016336 0ustar 00000000000000TAL - Template Attribute Language --------------------------------- This is an implementation of TAL, the Zope Template Attribute Language. For TAL, see the Zope Presentation Templates ZWiki: http://dev.zope.org/Wikis/DevSite/Projects/ZPT/FrontPage It is not a Zope product nor is it designed exclusively to run inside of Zope, but if you have a Zope checkout that includes Products/ParsedXML, its Expat parser will be used. Prerequisites ------------- You need: - A recent checkout of Zope2; don't forget to run the wo_pcgi.py script to compile everything. (See above -- this is now optional.) - A recent checkout of the Zope2 product ParsedXML, accessible throught /lib/python/Products/ParsedXML; don't forget to run the setup.py script to compiles Expat. (Again, optional.) - Python 1.5.2; the driver script refuses to work with other versions unless you specify the -n option; this is done so that I don't accidentally use Python 2.x features. - Create a .path file containing proper module search path; it should point the /lib/python directory that you want to use. How To Play ----------- (Don't forget to edit .path, see above!) The script driver.py takes an XML file with TAL markup as argument and writes the expanded version to standard output. The filename argument defaults to tests/input/test01.xml. Regression test --------------- There are unit test suites in the 'tests' subdirectory; these can be run with tests/run.py. This should print the testcase names plus progress info, followed by a final line saying "OK". It requires that ../unittest.py exists. There are a number of test files in the 'tests' subdirectory, named tests/input/test.xml and tests/input/test.html. The Python script ./runtest.py calls driver.main() for each test file, and should print " OK" for each one. These tests are also run as part of the unit test suites, so tests/run.py is all you need. What's Here ----------- DummyEngine.py simple-minded TALES execution engine TALInterpreter.py class to interpret intermediate code TALGenerator.py class to generate intermediate code XMLParser.py base class to parse XML, avoiding DOM TALParser.py class to parse XML with TAL into intermediate code HTMLTALParser.py class to parse HTML with TAL into intermediate code HTMLParser.py HTML-parsing base class driver.py script to demonstrate TAL expansion timer.py script to time various processing phases setpath.py hack to set sys.path and import ZODB __init__.py empty file that makes this directory a package runtest.py Python script to run file-comparison tests ndiff.py helper for runtest.py to produce diffs tests/ drectory with test files and output tests/run.py Python script to run all tests Author and License ------------------ This code is written by Guido van Rossum (project lead), Fred Drake, and Tim Peters. It is owned by Digital Creations and can be redistributed under the Zope Public License. TO DO ----- (See also http://www.zope.org/Members/jim/ZPTIssueTracker .) - Need to remove leading whitespace and newline when omitting an element (either through tal:replace with a value of nothing or tal:condition with a false condition). - Empty TAL/METAL attributes are ignored: tal:replace="" is ignored rather than causing an error. - HTMLTALParser.py and TALParser.py are silly names. Should be HTMLTALCompiler.py and XMLTALCompiler.py (or maybe shortened, without "TAL"?) - Should we preserve case of tags and attribute names in HTML? code-b975da59cd11/roundup/cgi/TAL/TALDefs.py0000644000000000000000000001004507640246271016420 0ustar 00000000000000############################################################################## # # Copyright (c) 2001, 2002 Zope Corporation and Contributors. # All Rights Reserved. # # This software is subject to the provisions of the Zope Public License, # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution. # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS # FOR A PARTICULAR PURPOSE # ############################################################################## """ Common definitions used by TAL and METAL compilation an transformation. """ from types import ListType, TupleType TAL_VERSION = "1.3.2" XML_NS = "http://www.w3.org/XML/1998/namespace" # URI for XML namespace XMLNS_NS = "http://www.w3.org/2000/xmlns/" # URI for XML NS declarations ZOPE_TAL_NS = "http://xml.zope.org/namespaces/tal" ZOPE_METAL_NS = "http://xml.zope.org/namespaces/metal" NAME_RE = "[a-zA-Z_][a-zA-Z0-9_]*" KNOWN_METAL_ATTRIBUTES = [ "define-macro", "use-macro", "define-slot", "fill-slot", "slot" ] KNOWN_TAL_ATTRIBUTES = [ "define", "condition", "content", "replace", "repeat", "attributes", "on-error", "omit-tag", "tal tag", ] class TALError(Exception): def __init__(self, msg, position=(None, None)): assert msg != "" self.msg = msg self.lineno = position[0] self.offset = position[1] def __str__(self): result = self.msg if self.lineno is not None: result = result + ", at line %d" % self.lineno if self.offset is not None: result = result + ", column %d" % (self.offset + 1) return result class METALError(TALError): pass class TALESError(TALError): pass class ErrorInfo: def __init__(self, err, position=(None, None)): if isinstance(err, Exception): self.type = err.__class__ self.value = err else: self.type = err self.value = None self.lineno = position[0] self.offset = position[1] import re _attr_re = re.compile(r"\s*([^\s]+)\s+([^\s].*)\Z", re.S) _subst_re = re.compile(r"\s*(?:(text|structure)\s+)?(.*)\Z", re.S) del re def parseAttributeReplacements(arg): dict = {} for part in splitParts(arg): m = _attr_re.match(part) if not m: raise TALError("Bad syntax in attributes:" + `part`) name, expr = m.group(1, 2) if dict.has_key(name): raise TALError("Duplicate attribute name in attributes:" + `part`) dict[name] = expr return dict def parseSubstitution(arg, position=(None, None)): m = _subst_re.match(arg) if not m: raise TALError("Bad syntax in substitution text: " + `arg`, position) key, expr = m.group(1, 2) if not key: key = "text" return key, expr def splitParts(arg): # Break in pieces at undoubled semicolons and # change double semicolons to singles: import string arg = string.replace(arg, ";;", "\0") parts = string.split(arg, ';') parts = map(lambda s, repl=string.replace: repl(s, "\0", ";"), parts) if len(parts) > 1 and not string.strip(parts[-1]): del parts[-1] # It ended in a semicolon return parts def isCurrentVersion(program): version = getProgramVersion(program) return version == TAL_VERSION def getProgramMode(program): version = getProgramVersion(program) if (version == TAL_VERSION and isinstance(program[1], TupleType) and len(program[1]) == 2): opcode, mode = program[1] if opcode == "mode": return mode return None def getProgramVersion(program): if (len(program) >= 2 and isinstance(program[0], TupleType) and len(program[0]) == 2): opcode, version = program[0] if opcode == "version": return version return None import cgi def quote(s, escape=cgi.escape): return '"%s"' % escape(s, 1) del cgi code-b975da59cd11/roundup/cgi/TAL/TALGenerator.py0000644000000000000000000005101107640246271017463 0ustar 00000000000000############################################################################## # # Copyright (c) 2001, 2002 Zope Corporation and Contributors. # All Rights Reserved. # # This software is subject to the provisions of the Zope Public License, # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution. # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS # FOR A PARTICULAR PURPOSE # ############################################################################## """ Code generator for TALInterpreter intermediate code. """ import string import re import cgi from TALDefs import * class TALGenerator: inMacroUse = 0 inMacroDef = 0 source_file = None def __init__(self, expressionCompiler=None, xml=1, source_file=None): if not expressionCompiler: from DummyEngine import DummyEngine expressionCompiler = DummyEngine() self.expressionCompiler = expressionCompiler self.CompilerError = expressionCompiler.getCompilerError() self.program = [] self.stack = [] self.todoStack = [] self.macros = {} self.slots = {} self.slotStack = [] self.xml = xml self.emit("version", TAL_VERSION) self.emit("mode", xml and "xml" or "html") if source_file is not None: self.source_file = source_file self.emit("setSourceFile", source_file) def getCode(self): assert not self.stack assert not self.todoStack return self.optimize(self.program), self.macros def optimize(self, program): output = [] collect = [] rawseen = cursor = 0 if self.xml: endsep = "/>" else: endsep = " />" for cursor in xrange(len(program)+1): try: item = program[cursor] except IndexError: item = (None, None) opcode = item[0] if opcode == "rawtext": collect.append(item[1]) continue if opcode == "endTag": collect.append("" % item[1]) continue if opcode == "startTag": if self.optimizeStartTag(collect, item[1], item[2], ">"): continue if opcode == "startEndTag": if self.optimizeStartTag(collect, item[1], item[2], endsep): continue if opcode in ("beginScope", "endScope"): # Push *Scope instructions in front of any text instructions; # this allows text instructions separated only by *Scope # instructions to be joined together. output.append(self.optimizeArgsList(item)) continue text = string.join(collect, "") if text: i = string.rfind(text, "\n") if i >= 0: i = len(text) - (i + 1) output.append(("rawtextColumn", (text, i))) else: output.append(("rawtextOffset", (text, len(text)))) if opcode != None: output.append(self.optimizeArgsList(item)) rawseen = cursor+1 collect = [] return self.optimizeCommonTriple(output) def optimizeArgsList(self, item): if len(item) == 2: return item else: return item[0], tuple(item[1:]) actionIndex = {"replace":0, "insert":1, "metal":2, "tal":3, "xmlns":4, 0: 0, 1: 1, 2: 2, 3: 3, 4: 4} def optimizeStartTag(self, collect, name, attrlist, end): if not attrlist: collect.append("<%s%s" % (name, end)) return 1 opt = 1 new = ["<" + name] for i in range(len(attrlist)): item = attrlist[i] if len(item) > 2: opt = 0 name, value, action = item[:3] action = self.actionIndex[action] attrlist[i] = (name, value, action) + item[3:] else: if item[1] is None: s = item[0] else: s = "%s=%s" % (item[0], quote(item[1])) attrlist[i] = item[0], s if item[1] is None: new.append(" " + item[0]) else: new.append(" %s=%s" % (item[0], quote(item[1]))) if opt: new.append(end) collect.extend(new) return opt def optimizeCommonTriple(self, program): if len(program) < 3: return program output = program[:2] prev2, prev1 = output for item in program[2:]: if ( item[0] == "beginScope" and prev1[0] == "setPosition" and prev2[0] == "rawtextColumn"): position = output.pop()[1] text, column = output.pop()[1] prev1 = None, None closeprev = 0 if output and output[-1][0] == "endScope": closeprev = 1 output.pop() item = ("rawtextBeginScope", (text, column, position, closeprev, item[1])) output.append(item) prev2 = prev1 prev1 = item return output def todoPush(self, todo): self.todoStack.append(todo) def todoPop(self): return self.todoStack.pop() def compileExpression(self, expr): try: return self.expressionCompiler.compile(expr) except self.CompilerError, err: raise TALError('%s in expression %s' % (err.args[0], `expr`), self.position) def pushProgram(self): self.stack.append(self.program) self.program = [] def popProgram(self): program = self.program self.program = self.stack.pop() return self.optimize(program) def pushSlots(self): self.slotStack.append(self.slots) self.slots = {} def popSlots(self): slots = self.slots self.slots = self.slotStack.pop() return slots def emit(self, *instruction): self.program.append(instruction) def emitStartTag(self, name, attrlist, isend=0): if isend: opcode = "startEndTag" else: opcode = "startTag" self.emit(opcode, name, attrlist) def emitEndTag(self, name): if self.xml and self.program and self.program[-1][0] == "startTag": # Minimize empty element self.program[-1] = ("startEndTag",) + self.program[-1][1:] else: self.emit("endTag", name) def emitOptTag(self, name, optTag, isend): program = self.popProgram() #block start = self.popProgram() #start tag if (isend or not program) and self.xml: # Minimize empty element start[-1] = ("startEndTag",) + start[-1][1:] isend = 1 cexpr = optTag[0] if cexpr: cexpr = self.compileExpression(optTag[0]) self.emit("optTag", name, cexpr, optTag[1], isend, start, program) def emitRawText(self, text): self.emit("rawtext", text) def emitText(self, text): self.emitRawText(cgi.escape(text)) def emitDefines(self, defines): for part in splitParts(defines): m = re.match( r"(?s)\s*(?:(global|local)\s+)?(%s)\s+(.*)\Z" % NAME_RE, part) if not m: raise TALError("invalid define syntax: " + `part`, self.position) scope, name, expr = m.group(1, 2, 3) scope = scope or "local" cexpr = self.compileExpression(expr) if scope == "local": self.emit("setLocal", name, cexpr) else: self.emit("setGlobal", name, cexpr) def emitOnError(self, name, onError, TALtag, isend): block = self.popProgram() key, expr = parseSubstitution(onError) cexpr = self.compileExpression(expr) if key == "text": self.emit("insertText", cexpr, []) else: assert key == "structure" self.emit("insertStructure", cexpr, {}, []) if TALtag: self.emitOptTag(name, (None, 1), isend) else: self.emitEndTag(name) handler = self.popProgram() self.emit("onError", block, handler) def emitCondition(self, expr): cexpr = self.compileExpression(expr) program = self.popProgram() self.emit("condition", cexpr, program) def emitRepeat(self, arg): m = re.match("(?s)\s*(%s)\s+(.*)\Z" % NAME_RE, arg) if not m: raise TALError("invalid repeat syntax: " + `arg`, self.position) name, expr = m.group(1, 2) cexpr = self.compileExpression(expr) program = self.popProgram() self.emit("loop", name, cexpr, program) def emitSubstitution(self, arg, attrDict={}): key, expr = parseSubstitution(arg) cexpr = self.compileExpression(expr) program = self.popProgram() if key == "text": self.emit("insertText", cexpr, program) else: assert key == "structure" self.emit("insertStructure", cexpr, attrDict, program) def emitDefineMacro(self, macroName): program = self.popProgram() macroName = string.strip(macroName) if self.macros.has_key(macroName): raise METALError("duplicate macro definition: %s" % `macroName`, self.position) if not re.match('%s$' % NAME_RE, macroName): raise METALError("invalid macro name: %s" % `macroName`, self.position) self.macros[macroName] = program self.inMacroDef = self.inMacroDef - 1 self.emit("defineMacro", macroName, program) def emitUseMacro(self, expr): cexpr = self.compileExpression(expr) program = self.popProgram() self.inMacroUse = 0 self.emit("useMacro", expr, cexpr, self.popSlots(), program) def emitDefineSlot(self, slotName): program = self.popProgram() slotName = string.strip(slotName) if not re.match('%s$' % NAME_RE, slotName): raise METALError("invalid slot name: %s" % `slotName`, self.position) self.emit("defineSlot", slotName, program) def emitFillSlot(self, slotName): program = self.popProgram() slotName = string.strip(slotName) if self.slots.has_key(slotName): raise METALError("duplicate fill-slot name: %s" % `slotName`, self.position) if not re.match('%s$' % NAME_RE, slotName): raise METALError("invalid slot name: %s" % `slotName`, self.position) self.slots[slotName] = program self.inMacroUse = 1 self.emit("fillSlot", slotName, program) def unEmitWhitespace(self): collect = [] i = len(self.program) - 1 while i >= 0: item = self.program[i] if item[0] != "rawtext": break text = item[1] if not re.match(r"\A\s*\Z", text): break collect.append(text) i = i-1 del self.program[i+1:] if i >= 0 and self.program[i][0] == "rawtext": text = self.program[i][1] m = re.search(r"\s+\Z", text) if m: self.program[i] = ("rawtext", text[:m.start()]) collect.append(m.group()) collect.reverse() return string.join(collect, "") def unEmitNewlineWhitespace(self): collect = [] i = len(self.program) while i > 0: i = i-1 item = self.program[i] if item[0] != "rawtext": break text = item[1] if re.match(r"\A[ \t]*\Z", text): collect.append(text) continue m = re.match(r"(?s)^(.*)(\n[ \t]*)\Z", text) if not m: break text, rest = m.group(1, 2) collect.reverse() rest = rest + string.join(collect, "") del self.program[i:] if text: self.emit("rawtext", text) return rest return None def replaceAttrs(self, attrlist, repldict): if not repldict: return attrlist newlist = [] for item in attrlist: key = item[0] if repldict.has_key(key): item = item[:2] + ("replace", repldict[key]) del repldict[key] newlist.append(item) for key, value in repldict.items(): # Add dynamic-only attributes item = (key, None, "insert", value) newlist.append(item) return newlist def emitStartElement(self, name, attrlist, taldict, metaldict, position=(None, None), isend=0): if not taldict and not metaldict: # Handle the simple, common case self.emitStartTag(name, attrlist, isend) self.todoPush({}) if isend: self.emitEndElement(name, isend) return self.position = position for key, value in taldict.items(): if key not in KNOWN_TAL_ATTRIBUTES: raise TALError("bad TAL attribute: " + `key`, position) if not (value or key == 'omit-tag'): raise TALError("missing value for TAL attribute: " + `key`, position) for key, value in metaldict.items(): if key not in KNOWN_METAL_ATTRIBUTES: raise METALError("bad METAL attribute: " + `key`, position) if not value: raise TALError("missing value for METAL attribute: " + `key`, position) todo = {} defineMacro = metaldict.get("define-macro") useMacro = metaldict.get("use-macro") defineSlot = metaldict.get("define-slot") fillSlot = metaldict.get("fill-slot") define = taldict.get("define") condition = taldict.get("condition") repeat = taldict.get("repeat") content = taldict.get("content") replace = taldict.get("replace") attrsubst = taldict.get("attributes") onError = taldict.get("on-error") omitTag = taldict.get("omit-tag") TALtag = taldict.get("tal tag") if len(metaldict) > 1 and (defineMacro or useMacro): raise METALError("define-macro and use-macro cannot be used " "together or with define-slot or fill-slot", position) if content and replace: raise TALError("content and replace are mutually exclusive", position) repeatWhitespace = None if repeat: # Hack to include preceding whitespace in the loop program repeatWhitespace = self.unEmitNewlineWhitespace() if position != (None, None): # XXX at some point we should insist on a non-trivial position self.emit("setPosition", position) if self.inMacroUse: if fillSlot: self.pushProgram() if self.source_file is not None: self.emit("setSourceFile", self.source_file) todo["fillSlot"] = fillSlot self.inMacroUse = 0 else: if fillSlot: raise METALError, ("fill-slot must be within a use-macro", position) if not self.inMacroUse: if defineMacro: self.pushProgram() self.emit("version", TAL_VERSION) self.emit("mode", self.xml and "xml" or "html") if self.source_file is not None: self.emit("setSourceFile", self.source_file) todo["defineMacro"] = defineMacro self.inMacroDef = self.inMacroDef + 1 if useMacro: self.pushSlots() self.pushProgram() todo["useMacro"] = useMacro self.inMacroUse = 1 if defineSlot: if not self.inMacroDef: raise METALError, ( "define-slot must be within a define-macro", position) self.pushProgram() todo["defineSlot"] = defineSlot if taldict: dict = {} for item in attrlist: key, value = item[:2] dict[key] = value self.emit("beginScope", dict) todo["scope"] = 1 if onError: self.pushProgram() # handler if TALtag: self.pushProgram() # start self.emitStartTag(name, list(attrlist)) # Must copy attrlist! if TALtag: self.pushProgram() # start self.pushProgram() # block todo["onError"] = onError if define: self.emitDefines(define) todo["define"] = define if condition: self.pushProgram() todo["condition"] = condition if repeat: todo["repeat"] = repeat self.pushProgram() if repeatWhitespace: self.emitText(repeatWhitespace) if content: todo["content"] = content if replace: todo["replace"] = replace self.pushProgram() optTag = omitTag is not None or TALtag if optTag: todo["optional tag"] = omitTag, TALtag self.pushProgram() if attrsubst: repldict = parseAttributeReplacements(attrsubst) for key, value in repldict.items(): repldict[key] = self.compileExpression(value) else: repldict = {} if replace: todo["repldict"] = repldict repldict = {} self.emitStartTag(name, self.replaceAttrs(attrlist, repldict), isend) if optTag: self.pushProgram() if content: self.pushProgram() if todo and position != (None, None): todo["position"] = position self.todoPush(todo) if isend: self.emitEndElement(name, isend) def emitEndElement(self, name, isend=0, implied=0): todo = self.todoPop() if not todo: # Shortcut if not isend: self.emitEndTag(name) return self.position = position = todo.get("position", (None, None)) defineMacro = todo.get("defineMacro") useMacro = todo.get("useMacro") defineSlot = todo.get("defineSlot") fillSlot = todo.get("fillSlot") repeat = todo.get("repeat") content = todo.get("content") replace = todo.get("replace") condition = todo.get("condition") onError = todo.get("onError") define = todo.get("define") repldict = todo.get("repldict", {}) scope = todo.get("scope") optTag = todo.get("optional tag") if implied > 0: if defineMacro or useMacro or defineSlot or fillSlot: exc = METALError what = "METAL" else: exc = TALError what = "TAL" raise exc("%s attributes on <%s> require explicit " % (what, name, name), position) if content: self.emitSubstitution(content, {}) if optTag: self.emitOptTag(name, optTag, isend) elif not isend: self.emitEndTag(name) if replace: self.emitSubstitution(replace, repldict) if repeat: self.emitRepeat(repeat) if condition: self.emitCondition(condition) if onError: self.emitOnError(name, onError, optTag and optTag[1], isend) if scope: self.emit("endScope") if defineSlot: self.emitDefineSlot(defineSlot) if fillSlot: self.emitFillSlot(fillSlot) if useMacro: self.emitUseMacro(useMacro) if defineMacro: self.emitDefineMacro(defineMacro) def test(): t = TALGenerator() t.pushProgram() t.emit("bar") p = t.popProgram() t.emit("foo", p) if __name__ == "__main__": test() code-b975da59cd11/roundup/cgi/TAL/TALInterpreter.py0000644000000000000000000005216007640246271020046 0ustar 00000000000000############################################################################## # # Copyright (c) 2001, 2002 Zope Corporation and Contributors. # All Rights Reserved. # # This software is subject to the provisions of the Zope Public License, # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution. # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS # FOR A PARTICULAR PURPOSE # ############################################################################## """ Interpreter for a pre-compiled TAL program. """ import sys import getopt from cgi import escape try: from cStringIO import StringIO except ImportError: from StringIO import StringIO from TALDefs import quote, TAL_VERSION, TALError, METALError from TALDefs import isCurrentVersion, getProgramVersion, getProgramMode from TALGenerator import TALGenerator BOOLEAN_HTML_ATTRS = [ # List of Boolean attributes in HTML that should be rendered in # minimized form (e.g. rather than ) # From http://www.w3.org/TR/xhtml1/#guidelines (C.10) # XXX The problem with this is that this is not valid XML and # can't be parsed back! "compact", "nowrap", "ismap", "declare", "noshade", "checked", "disabled", "readonly", "multiple", "selected", "noresize", "defer" ] EMPTY_HTML_TAGS = [ # List of HTML tags with an empty content model; these are # rendered in minimized form, e.g. . # From http://www.w3.org/TR/xhtml1/#dtds "base", "meta", "link", "hr", "br", "param", "img", "area", "input", "col", "basefont", "isindex", "frame", ] class AltTALGenerator(TALGenerator): def __init__(self, repldict, expressionCompiler=None, xml=0): self.repldict = repldict self.enabled = 1 TALGenerator.__init__(self, expressionCompiler, xml) def enable(self, enabled): self.enabled = enabled def emit(self, *args): if self.enabled: apply(TALGenerator.emit, (self,) + args) def emitStartElement(self, name, attrlist, taldict, metaldict, position=(None, None), isend=0): metaldict = {} taldict = {} if self.enabled and self.repldict: taldict["attributes"] = "x x" TALGenerator.emitStartElement(self, name, attrlist, taldict, metaldict, position, isend) def replaceAttrs(self, attrlist, repldict): if self.enabled and self.repldict: repldict = self.repldict self.repldict = None return TALGenerator.replaceAttrs(self, attrlist, repldict) class TALInterpreter: def __init__(self, program, macros, engine, stream=None, debug=0, wrap=60, metal=1, tal=1, showtal=-1, strictinsert=1, stackLimit=100): self.program = program self.macros = macros self.engine = engine self.Default = engine.getDefault() self.stream = stream or sys.stdout self._stream_write = self.stream.write self.debug = debug self.wrap = wrap self.metal = metal self.tal = tal if tal: self.dispatch = self.bytecode_handlers_tal else: self.dispatch = self.bytecode_handlers assert showtal in (-1, 0, 1) if showtal == -1: showtal = (not tal) self.showtal = showtal self.strictinsert = strictinsert self.stackLimit = stackLimit self.html = 0 self.endsep = "/>" self.endlen = len(self.endsep) self.macroStack = [] self.popMacro = self.macroStack.pop self.position = None, None # (lineno, offset) self.col = 0 self.level = 0 self.scopeLevel = 0 self.sourceFile = None def saveState(self): return (self.position, self.col, self.stream, self.scopeLevel, self.level) def restoreState(self, state): (self.position, self.col, self.stream, scopeLevel, level) = state self._stream_write = self.stream.write assert self.level == level while self.scopeLevel > scopeLevel: self.engine.endScope() self.scopeLevel = self.scopeLevel - 1 self.engine.setPosition(self.position) def restoreOutputState(self, state): (dummy, self.col, self.stream, scopeLevel, level) = state self._stream_write = self.stream.write assert self.level == level assert self.scopeLevel == scopeLevel def pushMacro(self, macroName, slots, entering=1): if len(self.macroStack) >= self.stackLimit: raise METALError("macro nesting limit (%d) exceeded " "by %s" % (self.stackLimit, `macroName`)) self.macroStack.append([macroName, slots, entering]) def macroContext(self, what): macroStack = self.macroStack i = len(macroStack) while i > 0: i = i-1 if macroStack[i][0] == what: return i return -1 def __call__(self): assert self.level == 0 assert self.scopeLevel == 0 self.interpret(self.program) assert self.level == 0 assert self.scopeLevel == 0 if self.col > 0: self._stream_write("\n") self.col = 0 def stream_write(self, s, len=len): self._stream_write(s) i = s.rfind('\n') if i < 0: self.col = self.col + len(s) else: self.col = len(s) - (i + 1) bytecode_handlers = {} def interpret(self, program): oldlevel = self.level self.level = oldlevel + 1 handlers = self.dispatch try: if self.debug: for (opcode, args) in program: s = "%sdo_%s%s\n" % (" "*self.level, opcode, repr(args)) if len(s) > 80: s = s[:76] + "...\n" sys.stderr.write(s) handlers[opcode](self, args) else: for (opcode, args) in program: handlers[opcode](self, args) finally: self.level = oldlevel def do_version(self, version): assert version == TAL_VERSION bytecode_handlers["version"] = do_version def do_mode(self, mode): assert mode in ("html", "xml") self.html = (mode == "html") if self.html: self.endsep = " />" else: self.endsep = "/>" self.endlen = len(self.endsep) bytecode_handlers["mode"] = do_mode def do_setSourceFile(self, source_file): self.sourceFile = source_file self.engine.setSourceFile(source_file) bytecode_handlers["setSourceFile"] = do_setSourceFile def do_setPosition(self, position): self.position = position self.engine.setPosition(position) bytecode_handlers["setPosition"] = do_setPosition def do_startEndTag(self, stuff): self.do_startTag(stuff, self.endsep, self.endlen) bytecode_handlers["startEndTag"] = do_startEndTag def do_startTag(self, (name, attrList), end=">", endlen=1, _len=len): # The bytecode generator does not cause calls to this method # for start tags with no attributes; those are optimized down # to rawtext events. Hence, there is no special "fast path" # for that case. _stream_write = self._stream_write _stream_write("<" + name) namelen = _len(name) col = self.col + namelen + 1 wrap = self.wrap align = col + 1 if align >= wrap/2: align = 4 # Avoid a narrow column far to the right attrAction = self.dispatch[""] try: for item in attrList: if _len(item) == 2: name, s = item else: ok, name, s = attrAction(self, item) if not ok: continue slen = _len(s) if (wrap and col >= align and col + 1 + slen > wrap): _stream_write("\n" + " "*align) col = align + slen else: s = " " + s col = col + 1 + slen _stream_write(s) _stream_write(end) col = col + endlen finally: self.col = col bytecode_handlers["startTag"] = do_startTag def attrAction(self, item): name, value, action = item[:3] if action == 1 or (action > 1 and not self.showtal): return 0, name, value macs = self.macroStack if action == 2 and self.metal and macs: if len(macs) > 1 or not macs[-1][2]: # Drop all METAL attributes at a use-depth above one. return 0, name, value # Clear 'entering' flag macs[-1][2] = 0 # Convert or drop depth-one METAL attributes. i = name.rfind(":") + 1 prefix, suffix = name[:i], name[i:] if suffix == "define-macro": # Convert define-macro as we enter depth one. name = prefix + "use-macro" value = macs[-1][0] # Macro name elif suffix == "define-slot": name = prefix + "slot" elif suffix == "fill-slot": pass else: return 0, name, value if value is None: value = name else: value = "%s=%s" % (name, quote(value)) return 1, name, value def attrAction_tal(self, item): name, value, action = item[:3] if action > 1: return self.attrAction(item) ok = 1 if self.html and name.lower() in BOOLEAN_HTML_ATTRS: evalue = self.engine.evaluateBoolean(item[3]) if evalue is self.Default: if action == 1: # Cancelled insert ok = 0 elif evalue: value = None else: ok = 0 else: evalue = self.engine.evaluateText(item[3]) if evalue is self.Default: if action == 1: # Cancelled insert ok = 0 else: if evalue is None: ok = 0 value = evalue if ok: if value is None: value = name value = "%s=%s" % (name, quote(value)) return ok, name, value bytecode_handlers[""] = attrAction def no_tag(self, start, program): state = self.saveState() self.stream = stream = StringIO() self._stream_write = stream.write self.interpret(start) self.restoreOutputState(state) self.interpret(program) def do_optTag(self, (name, cexpr, tag_ns, isend, start, program), omit=0): if tag_ns and not self.showtal: return self.no_tag(start, program) self.interpret(start) if not isend: self.interpret(program) s = '' % name self._stream_write(s) self.col = self.col + len(s) def do_optTag_tal(self, stuff): cexpr = stuff[1] if cexpr is not None and (cexpr == '' or self.engine.evaluateBoolean(cexpr)): self.no_tag(stuff[-2], stuff[-1]) else: self.do_optTag(stuff) bytecode_handlers["optTag"] = do_optTag def dumpMacroStack(self, prefix, suffix, value): sys.stderr.write("+---- %s%s = %s\n" % (prefix, suffix, value)) for i in range(len(self.macroStack)): what, macroName, slots = self.macroStack[i] sys.stderr.write("| %2d. %-12s %-12s %s\n" % (i, what, macroName, slots and slots.keys())) sys.stderr.write("+--------------------------------------\n") def do_rawtextBeginScope(self, (s, col, position, closeprev, dict)): self._stream_write(s) self.col = col self.do_setPosition(position) if closeprev: engine = self.engine engine.endScope() engine.beginScope() else: self.engine.beginScope() self.scopeLevel = self.scopeLevel + 1 def do_rawtextBeginScope_tal(self, (s, col, position, closeprev, dict)): self._stream_write(s) self.col = col self.do_setPosition(position) engine = self.engine if closeprev: engine.endScope() engine.beginScope() else: engine.beginScope() self.scopeLevel = self.scopeLevel + 1 engine.setLocal("attrs", dict) bytecode_handlers["rawtextBeginScope"] = do_rawtextBeginScope def do_beginScope(self, dict): self.engine.beginScope() self.scopeLevel = self.scopeLevel + 1 def do_beginScope_tal(self, dict): engine = self.engine engine.beginScope() engine.setLocal("attrs", dict) self.scopeLevel = self.scopeLevel + 1 bytecode_handlers["beginScope"] = do_beginScope def do_endScope(self, notused=None): self.engine.endScope() self.scopeLevel = self.scopeLevel - 1 bytecode_handlers["endScope"] = do_endScope def do_setLocal(self, notused): pass def do_setLocal_tal(self, (name, expr)): self.engine.setLocal(name, self.engine.evaluateValue(expr)) bytecode_handlers["setLocal"] = do_setLocal def do_setGlobal_tal(self, (name, expr)): self.engine.setGlobal(name, self.engine.evaluateValue(expr)) bytecode_handlers["setGlobal"] = do_setLocal def do_insertText(self, stuff): self.interpret(stuff[1]) def do_insertText_tal(self, stuff): text = self.engine.evaluateText(stuff[0]) if text is None: return if text is self.Default: self.interpret(stuff[1]) return s = escape(text) self._stream_write(s) i = s.rfind('\n') if i < 0: self.col = self.col + len(s) else: self.col = len(s) - (i + 1) bytecode_handlers["insertText"] = do_insertText def do_insertStructure(self, stuff): self.interpret(stuff[2]) def do_insertStructure_tal(self, (expr, repldict, block)): structure = self.engine.evaluateStructure(expr) if structure is None: return if structure is self.Default: self.interpret(block) return text = str(structure) if not (repldict or self.strictinsert): # Take a shortcut, no error checking self.stream_write(text) return if self.html: self.insertHTMLStructure(text, repldict) else: self.insertXMLStructure(text, repldict) bytecode_handlers["insertStructure"] = do_insertStructure def insertHTMLStructure(self, text, repldict): from HTMLTALParser import HTMLTALParser gen = AltTALGenerator(repldict, self.engine, 0) p = HTMLTALParser(gen) # Raises an exception if text is invalid p.parseString(text) program, macros = p.getCode() self.interpret(program) def insertXMLStructure(self, text, repldict): from TALParser import TALParser gen = AltTALGenerator(repldict, self.engine, 0) p = TALParser(gen) gen.enable(0) p.parseFragment('') gen.enable(1) p.parseFragment(text) # Raises an exception if text is invalid gen.enable(0) p.parseFragment('', 1) program, macros = gen.getCode() self.interpret(program) def do_loop(self, (name, expr, block)): self.interpret(block) def do_loop_tal(self, (name, expr, block)): iterator = self.engine.setRepeat(name, expr) while iterator.next(): self.interpret(block) bytecode_handlers["loop"] = do_loop def do_rawtextColumn(self, (s, col)): self._stream_write(s) self.col = col bytecode_handlers["rawtextColumn"] = do_rawtextColumn def do_rawtextOffset(self, (s, offset)): self._stream_write(s) self.col = self.col + offset bytecode_handlers["rawtextOffset"] = do_rawtextOffset def do_condition(self, (condition, block)): if not self.tal or self.engine.evaluateBoolean(condition): self.interpret(block) bytecode_handlers["condition"] = do_condition def do_defineMacro(self, (macroName, macro)): macs = self.macroStack if len(macs) == 1: entering = macs[-1][2] if not entering: macs.append(None) self.interpret(macro) macs.pop() return self.interpret(macro) bytecode_handlers["defineMacro"] = do_defineMacro def do_useMacro(self, (macroName, macroExpr, compiledSlots, block)): if not self.metal: self.interpret(block) return macro = self.engine.evaluateMacro(macroExpr) if macro is self.Default: macro = block else: if not isCurrentVersion(macro): raise METALError("macro %s has incompatible version %s" % (`macroName`, `getProgramVersion(macro)`), self.position) mode = getProgramMode(macro) if mode != (self.html and "html" or "xml"): raise METALError("macro %s has incompatible mode %s" % (`macroName`, `mode`), self.position) self.pushMacro(macroName, compiledSlots) saved_source = self.sourceFile saved_position = self.position # Used by Boa Constructor self.interpret(macro) if self.sourceFile != saved_source: self.engine.setSourceFile(saved_source) self.sourceFile = saved_source self.popMacro() bytecode_handlers["useMacro"] = do_useMacro def do_fillSlot(self, (slotName, block)): # This is only executed if the enclosing 'use-macro' evaluates # to 'default'. self.interpret(block) bytecode_handlers["fillSlot"] = do_fillSlot def do_defineSlot(self, (slotName, block)): if not self.metal: self.interpret(block) return macs = self.macroStack if macs and macs[-1] is not None: saved_source = self.sourceFile saved_position = self.position # Used by Boa Constructor macroName, slots = self.popMacro()[:2] slot = slots.get(slotName) if slot is not None: self.interpret(slot) if self.sourceFile != saved_source: self.engine.setSourceFile(saved_source) self.sourceFile = saved_source self.pushMacro(macroName, slots, entering=0) return self.pushMacro(macroName, slots) if len(macs) == 1: self.interpret(block) return self.interpret(block) bytecode_handlers["defineSlot"] = do_defineSlot def do_onError(self, (block, handler)): self.interpret(block) def do_onError_tal(self, (block, handler)): state = self.saveState() self.stream = stream = StringIO() self._stream_write = stream.write try: self.interpret(block) except: exc = sys.exc_info()[1] self.restoreState(state) engine = self.engine engine.beginScope() error = engine.createErrorInfo(exc, self.position) engine.setLocal('error', error) try: self.interpret(handler) finally: engine.endScope() else: self.restoreOutputState(state) self.stream_write(stream.getvalue()) bytecode_handlers["onError"] = do_onError bytecode_handlers_tal = bytecode_handlers.copy() bytecode_handlers_tal["rawtextBeginScope"] = do_rawtextBeginScope_tal bytecode_handlers_tal["beginScope"] = do_beginScope_tal bytecode_handlers_tal["setLocal"] = do_setLocal_tal bytecode_handlers_tal["setGlobal"] = do_setGlobal_tal bytecode_handlers_tal["insertStructure"] = do_insertStructure_tal bytecode_handlers_tal["insertText"] = do_insertText_tal bytecode_handlers_tal["loop"] = do_loop_tal bytecode_handlers_tal["onError"] = do_onError_tal bytecode_handlers_tal[""] = attrAction_tal bytecode_handlers_tal["optTag"] = do_optTag_tal def test(): from driver import FILE, parsefile from DummyEngine import DummyEngine try: opts, args = getopt.getopt(sys.argv[1:], "") except getopt.error, msg: print msg sys.exit(2) if args: file = args[0] else: file = FILE doc = parsefile(file) compiler = TALCompiler(doc) program, macros = compiler() engine = DummyEngine() interpreter = TALInterpreter(program, macros, engine) interpreter() if __name__ == "__main__": test() code-b975da59cd11/roundup/cgi/TAL/TALParser.py0000644000000000000000000001045507640246271017000 0ustar 00000000000000############################################################################## # # Copyright (c) 2001, 2002 Zope Corporation and Contributors. # All Rights Reserved. # # This software is subject to the provisions of the Zope Public License, # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution. # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS # FOR A PARTICULAR PURPOSE # ############################################################################## """ Parse XML and compile to TALInterpreter intermediate code. """ import string from XMLParser import XMLParser from TALDefs import * from TALGenerator import TALGenerator class TALParser(XMLParser): ordered_attributes = 1 def __init__(self, gen=None): # Override XMLParser.__init__(self) if gen is None: gen = TALGenerator() self.gen = gen self.nsStack = [] self.nsDict = {XML_NS: 'xml'} self.nsNew = [] def getCode(self): return self.gen.getCode() def getWarnings(self): return () def StartNamespaceDeclHandler(self, prefix, uri): self.nsStack.append(self.nsDict.copy()) self.nsDict[uri] = prefix self.nsNew.append((prefix, uri)) def EndNamespaceDeclHandler(self, prefix): self.nsDict = self.nsStack.pop() def StartElementHandler(self, name, attrs): if self.ordered_attributes: # attrs is a list of alternating names and values attrlist = [] for i in range(0, len(attrs), 2): key = attrs[i] value = attrs[i+1] attrlist.append((key, value)) else: # attrs is a dict of {name: value} attrlist = attrs.items() attrlist.sort() # For definiteness name, attrlist, taldict, metaldict = self.process_ns(name, attrlist) attrlist = self.xmlnsattrs() + attrlist self.gen.emitStartElement(name, attrlist, taldict, metaldict) def process_ns(self, name, attrlist): taldict = {} metaldict = {} fixedattrlist = [] name, namebase, namens = self.fixname(name) for key, value in attrlist: key, keybase, keyns = self.fixname(key) ns = keyns or namens # default to tag namespace item = key, value if ns == 'metal': metaldict[keybase] = value item = item + ("metal",) elif ns == 'tal': taldict[keybase] = value item = item + ("tal",) fixedattrlist.append(item) if namens in ('metal', 'tal'): taldict['tal tag'] = namens return name, fixedattrlist, taldict, metaldict def xmlnsattrs(self): newlist = [] for prefix, uri in self.nsNew: if prefix: key = "xmlns:" + prefix else: key = "xmlns" if uri in (ZOPE_METAL_NS, ZOPE_TAL_NS): item = (key, uri, "xmlns") else: item = (key, uri) newlist.append(item) self.nsNew = [] return newlist def fixname(self, name): if ' ' in name: uri, name = string.split(name, ' ') prefix = self.nsDict[uri] prefixed = name if prefix: prefixed = "%s:%s" % (prefix, name) ns = 'x' if uri == ZOPE_TAL_NS: ns = 'tal' elif uri == ZOPE_METAL_NS: ns = 'metal' return (prefixed, name, ns) return (name, name, None) def EndElementHandler(self, name): name = self.fixname(name)[0] self.gen.emitEndElement(name) def DefaultHandler(self, text): self.gen.emitRawText(text) def test(): import sys p = TALParser() file = "tests/input/test01.xml" if sys.argv[1:]: file = sys.argv[1] p.parseFile(file) program, macros = p.getCode() from TALInterpreter import TALInterpreter from DummyEngine import DummyEngine engine = DummyEngine(macros) TALInterpreter(program, macros, engine, sys.stdout, wrap=0)() if __name__ == "__main__": test() code-b975da59cd11/roundup/cgi/TAL/XMLParser.py0000644000000000000000000000577607640246271017032 0ustar 00000000000000############################################################################## # # Copyright (c) 2001, 2002 Zope Corporation and Contributors. # All Rights Reserved. # # This software is subject to the provisions of the Zope Public License, # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution. # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS # FOR A PARTICULAR PURPOSE # ############################################################################## """ Generic expat-based XML parser base class. Modified for Roundup 0.5 release: - removed dependency on zLOG """ class XMLParser: ordered_attributes = 0 handler_names = [ "StartElementHandler", "EndElementHandler", "ProcessingInstructionHandler", "CharacterDataHandler", "UnparsedEntityDeclHandler", "NotationDeclHandler", "StartNamespaceDeclHandler", "EndNamespaceDeclHandler", "CommentHandler", "StartCdataSectionHandler", "EndCdataSectionHandler", "DefaultHandler", "DefaultHandlerExpand", "NotStandaloneHandler", "ExternalEntityRefHandler", "XmlDeclHandler", "StartDoctypeDeclHandler", "EndDoctypeDeclHandler", "ElementDeclHandler", "AttlistDeclHandler" ] def __init__(self, encoding=None): self.parser = p = self.createParser() if self.ordered_attributes: try: self.parser.ordered_attributes = self.ordered_attributes except AttributeError: #zLOG.LOG("TAL.XMLParser", zLOG.INFO, # "Can't set ordered_attributes") self.ordered_attributes = 0 for name in self.handler_names: method = getattr(self, name, None) if method is not None: try: setattr(p, name, method) except AttributeError: #zLOG.LOG("TAL.XMLParser", zLOG.PROBLEM, # "Can't set expat handler %s" % name) pass def createParser(self, encoding=None): global XMLParseError try: from Products.ParsedXML.Expat import pyexpat XMLParseError = pyexpat.ExpatError return pyexpat.ParserCreate(encoding, ' ') except ImportError: from xml.parsers import expat XMLParseError = expat.ExpatError return expat.ParserCreate(encoding, ' ') def parseFile(self, filename): self.parseStream(open(filename)) def parseString(self, s): self.parser.Parse(s, 1) def parseURL(self, url): import urllib self.parseStream(urllib.urlopen(url)) def parseStream(self, stream): self.parser.ParseFile(stream) def parseFragment(self, s, end=0): self.parser.Parse(s, end) code-b975da59cd11/roundup/cgi/TAL/__init__.py0000644000000000000000000000126007640246271016734 0ustar 00000000000000############################################################################## # # Copyright (c) 2001, 2002 Zope Corporation and Contributors. # All Rights Reserved. # # This software is subject to the provisions of the Zope Public License, # Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution. # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS # FOR A PARTICULAR PURPOSE # ############################################################################## """ Template Attribute Language package """ code-b975da59cd11/roundup/cgi/TAL/markupbase.py0000644000000000000000000002460507640246271017337 0ustar 00000000000000"""Shared support for scanning document type declarations in HTML and XHTML.""" import re import string _declname_match = re.compile(r'[a-zA-Z][-_.a-zA-Z0-9]*\s*').match _declstringlit_match = re.compile(r'(\'[^\']*\'|"[^"]*")\s*').match del re class ParserBase: """Parser base class which provides some common support methods used by the SGML/HTML and XHTML parsers.""" def reset(self): self.lineno = 1 self.offset = 0 def getpos(self): """Return current line number and offset.""" return self.lineno, self.offset # Internal -- update line number and offset. This should be # called for each piece of data exactly once, in order -- in other # words the concatenation of all the input strings to this # function should be exactly the entire input. def updatepos(self, i, j): if i >= j: return j rawdata = self.rawdata nlines = string.count(rawdata, "\n", i, j) if nlines: self.lineno = self.lineno + nlines pos = string.rindex(rawdata, "\n", i, j) # Should not fail self.offset = j-(pos+1) else: self.offset = self.offset + j-i return j _decl_otherchars = '' # Internal -- parse declaration (for use by subclasses). def parse_declaration(self, i): # This is some sort of declaration; in "HTML as # deployed," this should only be the document type # declaration (""). rawdata = self.rawdata import sys j = i + 2 assert rawdata[i:j] == "' n = len(rawdata) decltype, j = self._scan_name(j, i) if j < 0: return j if decltype == "doctype": self._decl_otherchars = '' while j < n: c = rawdata[j] if c == ">": # end of declaration syntax data = rawdata[i+2:j] if decltype == "doctype": self.handle_decl(data) else: self.unknown_decl(data) return j + 1 if c in "\"'": m = _declstringlit_match(rawdata, j) if not m: return -1 # incomplete j = m.end() elif c in "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ": name, j = self._scan_name(j, i) elif c in self._decl_otherchars: j = j + 1 elif c == "[": if decltype == "doctype": j = self._parse_doctype_subset(j + 1, i) else: self.error("unexpected '[' char in declaration") else: self.error( "unexpected %s char in declaration" % `rawdata[j]`) if j < 0: return j return -1 # incomplete # Internal -- scan past the internal subset in a n: # end of buffer; incomplete return -1 if rawdata[j:j+4] == "