genshi/mirror: genshi/template/base.py annotate

annotate genshi/template/base.py @ 717:0e8b92905741 experimental-match-fastpaths

a performance breakthrough - bring this branch inline with the bigtable benchmark by lazily creating ctxt._match_set in a way that doesn't barf

author	aflett
date	Tue, 08 Apr 2008 23:36:20 +0000
parents	0cc3f1eabe13
children	d143dd73789b

rev	line source
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	1 # -- coding: utf-8 --
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	2 #
407 f37d8e6acdf2 Move string interpolation code into separate module (`genshi.template.interpolation`). cmlenz parents: 405 diff changeset	3 # Copyright (C) 2006-2007 Edgewall Software
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	4 # All rights reserved.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	5 #
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	6 # This software is licensed as described in the file COPYING, which
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	7 # you should have received as part of this distribution. The terms
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	8 # are also available at http://genshi.edgewall.org/wiki/License.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	9 #
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	10 # This software consists of voluntary contributions made by many
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	11 # individuals. For the exact contribution history, see the revision
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	12 # history and logs, available at http://genshi.edgewall.org/log/.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	13
427 55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	14 """Basic templating functionality."""
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	15
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	16 try:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	17 from collections import deque
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	18 except ImportError:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	19 class deque(list):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	20 def appendleft(self, x): self.insert(0, x)
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	21 def popleft(self): return self.pop(0)
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	22 import os
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	23 from StringIO import StringIO
609 6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	24 import sys
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	25
636 699601cce3cc Follow-up to [751]: applying the optimization to text templates was actually slowing them down, so only do it for markup templates. cmlenz parents: 635 diff changeset	26 from genshi.core import Attrs, Stream, StreamEventKind, START, TEXT, _ensure
434 5692bc32ba5f * Better method to propogate the full path to the template file on parse errors. Supersedes r513. cmlenz parents: 427 diff changeset	27 from genshi.input import ParseError
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	28
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	29 __all__ = ['Context', 'Template', 'TemplateError', 'TemplateRuntimeError',
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	30 'TemplateSyntaxError', 'BadDirectiveError']
425 073640758a42 Try to use proper reStructuredText for docstrings throughout. cmlenz parents: 420 diff changeset	31 __docformat__ = 'restructuredtext en'
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	32
609 6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	33 if sys.version_info < (2, 4):
6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	34 _ctxt2dict = lambda ctxt: ctxt.frames[0]
6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	35 else:
6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	36 _ctxt2dict = lambda ctxt: ctxt
6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	37
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	38
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	39 class TemplateError(Exception):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	40 """Base exception class for errors related to template processing."""
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	41
610 5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101). cmlenz parents: 609 diff changeset	42 def __init__(self, message, filename=None, lineno=-1, offset=-1):
438 2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	43 """Create the exception.
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	44
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	45 :param message: the error message
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	46 :param filename: the filename of the template
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	47 :param lineno: the number of line in the template at which the error
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	48 occurred
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	49 :param offset: the column number at which the error occurred
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	50 """
610 5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101). cmlenz parents: 609 diff changeset	51 if filename is None:
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101). cmlenz parents: 609 diff changeset	52 filename = '<string>'
438 2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	53 self.msg = message #: the error message string
407 f37d8e6acdf2 Move string interpolation code into separate module (`genshi.template.interpolation`). cmlenz parents: 405 diff changeset	54 if filename != '<string>' or lineno >= 0:
f37d8e6acdf2 Move string interpolation code into separate module (`genshi.template.interpolation`). cmlenz parents: 405 diff changeset	55 message = '%s (%s, line %d)' % (self.msg, filename, lineno)
438 2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	56 Exception.__init__(self, message)
2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	57 self.filename = filename #: the name of the template file
2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	58 self.lineno = lineno #: the number of the line containing the error
2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	59 self.offset = offset #: the offset on the line
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	60
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	61
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	62 class TemplateSyntaxError(TemplateError):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	63 """Exception raised when an expression in a template causes a Python syntax
438 2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	64 error, or the template is not well-formed.
2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	65 """
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	66
610 5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101). cmlenz parents: 609 diff changeset	67 def __init__(self, message, filename=None, lineno=-1, offset=-1):
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	68 """Create the exception
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	69
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	70 :param message: the error message
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	71 :param filename: the filename of the template
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	72 :param lineno: the number of line in the template at which the error
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	73 occurred
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	74 :param offset: the column number at which the error occurred
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	75 """
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	76 if isinstance(message, SyntaxError) and message.lineno is not None:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	77 message = str(message).replace(' (line %d)' % message.lineno, '')
438 2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	78 TemplateError.__init__(self, message, filename, lineno)
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	79
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	80
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	81 class BadDirectiveError(TemplateSyntaxError):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	82 """Exception raised when an unknown directive is encountered when parsing
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	83 a template.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	84
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	85 An unknown directive is any attribute using the namespace for directives,
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	86 with a local name that doesn't match any registered directive.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	87 """
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	88
610 5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101). cmlenz parents: 609 diff changeset	89 def __init__(self, name, filename=None, lineno=-1):
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	90 """Create the exception
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	91
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	92 :param name: the name of the directive
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	93 :param filename: the filename of the template
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	94 :param lineno: the number of line in the template at which the error
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	95 occurred
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	96 """
438 2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	97 TemplateSyntaxError.__init__(self, 'bad directive "%s"' % name,
2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	98 filename, lineno)
2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	99
2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	100
2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	101 class TemplateRuntimeError(TemplateError):
2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	102 """Exception raised when an the evaluation of a Python expression in a
2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	103 template causes an error.
2c38ec4e2dff Added documentation page on the builtin stream filters. cmlenz parents: 435 diff changeset	104 """
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	105
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	106
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	107 class Context(object):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	108 """Container for template input data.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	109
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	110 A context provides a stack of scopes (represented by dictionaries).
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	111
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	112 Template directives such as loops can push a new scope on the stack with
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	113 data that should only be available inside the loop. When the loop
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	114 terminates, that scope can get popped off the stack again.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	115
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	116 >>> ctxt = Context(one='foo', other=1)
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	117 >>> ctxt.get('one')
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	118 'foo'
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	119 >>> ctxt.get('other')
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	120 1
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	121 >>> ctxt.push(dict(one='frost'))
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	122 >>> ctxt.get('one')
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	123 'frost'
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	124 >>> ctxt.get('other')
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	125 1
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	126 >>> ctxt.pop()
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	127 {'one': 'frost'}
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	128 >>> ctxt.get('one')
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	129 'foo'
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	130 """
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	131
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	132 def __init__(self, **data):
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	133 """Initialize the template context with the given keyword arguments as
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	134 data.
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	135 """
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	136 self.frames = deque([data])
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	137 self.pop = self.frames.popleft
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	138 self.push = self.frames.appendleft
717 0e8b92905741 a performance breakthrough - bring this branch inline with the bigtable benchmark by lazily creating ctxt._match_set in a way that doesn't barf aflett parents: 711 diff changeset	139 self._match_set = None
553 489a47873950 Store state information for py:choose outside of the regular context data. cmlenz parents: 548 diff changeset	140 self._choice_stack = []
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	141
442 97544725bb7f Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option. cmlenz parents: 438 diff changeset	142 # Helper functions for use in expressions
97544725bb7f Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option. cmlenz parents: 438 diff changeset	143 def defined(name):
97544725bb7f Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option. cmlenz parents: 438 diff changeset	144 """Return whether a variable with the specified name exists in the
97544725bb7f Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option. cmlenz parents: 438 diff changeset	145 expression scope."""
97544725bb7f Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option. cmlenz parents: 438 diff changeset	146 return name in self
97544725bb7f Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option. cmlenz parents: 438 diff changeset	147 def value_of(name, default=None):
97544725bb7f Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option. cmlenz parents: 438 diff changeset	148 """If a variable of the specified name is defined, return its value.
97544725bb7f Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option. cmlenz parents: 438 diff changeset	149 Otherwise, return the provided default value, or ``None``."""
97544725bb7f Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option. cmlenz parents: 438 diff changeset	150 return self.get(name, default)
97544725bb7f Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option. cmlenz parents: 438 diff changeset	151 data.setdefault('defined', defined)
97544725bb7f Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option. cmlenz parents: 438 diff changeset	152 data.setdefault('value_of', value_of)
97544725bb7f Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option. cmlenz parents: 438 diff changeset	153
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	154 def __repr__(self):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	155 return repr(list(self.frames))
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	156
405 5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	157 def __contains__(self, key):
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	158 """Return whether a variable exists in any of the scopes.
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	159
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	160 :param key: the name of the variable
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	161 """
405 5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	162 return self._find(key)[1] is not None
564 aeb89e9730df Alias `__contains__` to `has_key` in `Context` class for code outside of Genshi that may expect that for some wild reason. cmlenz parents: 553 diff changeset	163 has_key = __contains__
405 5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	164
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	165 def __delitem__(self, key):
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	166 """Remove a variable from all scopes.
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	167
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	168 :param key: the name of the variable
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	169 """
405 5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	170 for frame in self.frames:
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	171 if key in frame:
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	172 del frame[key]
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	173
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	174 def __getitem__(self, key):
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	175 """Get a variables's value, starting at the current scope and going
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	176 upward.
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	177
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	178 :param key: the name of the variable
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	179 :return: the variable value
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	180 :raises KeyError: if the requested variable wasn't found in any scope
405 5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	181 """
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	182 value, frame = self._find(key)
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	183 if frame is None:
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	184 raise KeyError(key)
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	185 return value
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	186
420 91556138dae5 Add support for `len()` to the `Context` class. cmlenz parents: 407 diff changeset	187 def __len__(self):
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	188 """Return the number of distinctly named variables in the context.
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	189
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	190 :return: the number of variables in the context
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	191 """
420 91556138dae5 Add support for `len()` to the `Context` class. cmlenz parents: 407 diff changeset	192 return len(self.items())
91556138dae5 Add support for `len()` to the `Context` class. cmlenz parents: 407 diff changeset	193
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	194 def __setitem__(self, key, value):
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	195 """Set a variable in the current scope.
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	196
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	197 :param key: the name of the variable
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	198 :param value: the variable value
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	199 """
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	200 self.frames[0][key] = value
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	201
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	202 def _find(self, key, default=None):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	203 """Retrieve a given variable's value and the frame it was found in.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	204
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	205 Intended primarily for internal use by directives.
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	206
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	207 :param key: the name of the variable
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	208 :param default: the default value to return when the variable is not
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	209 found
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	210 """
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	211 for frame in self.frames:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	212 if key in frame:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	213 return frame[key], frame
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	214 return default, None
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	215
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	216 def get(self, key, default=None):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	217 """Get a variable's value, starting at the current scope and going
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	218 upward.
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	219
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	220 :param key: the name of the variable
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	221 :param default: the default value to return when the variable is not
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	222 found
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	223 """
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	224 for frame in self.frames:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	225 if key in frame:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	226 return frame[key]
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	227 return default
405 5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	228
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	229 def keys(self):
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	230 """Return the name of all variables in the context.
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	231
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	232 :return: a list of variable names
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	233 """
405 5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	234 keys = []
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	235 for frame in self.frames:
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	236 keys += [key for key in frame if key not in keys]
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	237 return keys
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	238
5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	239 def items(self):
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	240 """Return a list of ``(name, value)`` tuples for all variables in the
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	241 context.
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	242
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	243 :return: a list of variables
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	244 """
405 5340931530e2 Support for Python code blocks using the `<?python ?>` processing instruction. Closes #84. cmlenz parents: 400 diff changeset	245 return [(key, self.get(key)) for key in self.keys()]
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	246
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	247 def push(self, data):
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	248 """Push a new scope on the stack.
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	249
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	250 :param data: the data dictionary to push on the context stack.
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	251 """
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	252
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	253 def pop(self):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	254 """Pop the top-most scope from the stack."""
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	255
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	256
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	257 def _apply_directives(stream, directives, ctxt, **vars):
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	258 """Apply the given directives to the stream.
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	259
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	260 :param stream: the stream the directives should be applied to
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	261 :param directives: the list of directives to apply
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	262 :param ctxt: the `Context`
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	263 :param vars: additional variables that should be available when Python
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	264 code is executed
435 be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	265 :return: the stream with the given directives applied
be39660919a5 More API doc enhancements. cmlenz parents: 434 diff changeset	266 """
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	267 if directives:
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	268 stream = directives[0](iter(stream), directives[1:], ctxt, **vars)
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	269 return stream
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	270
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	271 def _eval_expr(expr, ctxt, **vars):
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	272 """Evaluate the given `Expression` object.
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	273
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	274 :param expr: the expression to evaluate
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	275 :param ctxt: the `Context`
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	276 :param vars: additional variables that should be available to the
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	277 expression
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	278 :return: the result of the evaluation
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	279 """
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	280 if vars:
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	281 ctxt.push(vars)
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	282 retval = expr.evaluate(ctxt)
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	283 if vars:
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	284 ctxt.pop()
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	285 return retval
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	286
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	287 def _exec_suite(suite, ctxt, **vars):
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	288 """Execute the given `Suite` object.
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	289
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	290 :param suite: the code suite to execute
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	291 :param ctxt: the `Context`
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	292 :param vars: additional variables that should be available to the
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	293 code
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	294 """
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	295 if vars:
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	296 ctxt.push(vars)
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	297 ctxt.push({})
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	298 suite.execute(_ctxt2dict(ctxt))
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	299 if vars:
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	300 top = ctxt.pop()
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	301 ctxt.pop()
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	302 ctxt.frames[0].update(top)
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	303
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	304
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	305 class TemplateMeta(type):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	306 """Meta class for templates."""
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	307
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	308 def __new__(cls, name, bases, d):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	309 if 'directives' in d:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	310 d['_dir_by_name'] = dict(d['directives'])
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	311 d['_dir_order'] = [directive[1] for directive in d['directives']]
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	312
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	313 return type.__new__(cls, name, bases, d)
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	314
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	315
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	316 class Template(object):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	317 """Abstract template base class.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	318
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	319 This class implements most of the template processing model, but does not
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	320 specify the syntax of templates.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	321 """
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	322 __metaclass__ = TemplateMeta
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	323
609 6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	324 EXEC = StreamEventKind('EXEC')
6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	325 """Stream event kind representing a Python code suite to execute."""
6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	326
427 55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	327 EXPR = StreamEventKind('EXPR')
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	328 """Stream event kind representing a Python expression."""
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	329
475 b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	330 INCLUDE = StreamEventKind('INCLUDE')
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	331 """Stream event kind representing the inclusion of another template."""
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	332
427 55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	333 SUB = StreamEventKind('SUB')
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	334 """Stream event kind representing a nested stream to which one or more
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	335 directives should be applied.
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	336 """
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	337
605 d0345c64da65 Text templates now default to rendering as plain text; it is no longer necessary to explicitly specify the "text" method to the `render()` or `serialize()` method of the generated markup stream. See tickets #62 and #118. cmlenz parents: 590 diff changeset	338 serializer = None
636 699601cce3cc Follow-up to [751]: applying the optimization to text templates was actually slowing them down, so only do it for markup templates. cmlenz parents: 635 diff changeset	339 _number_conv = unicode # function used to convert numbers to event data
605 d0345c64da65 Text templates now default to rendering as plain text; it is no longer necessary to explicitly specify the "text" method to the `render()` or `serialize()` method of the generated markup stream. See tickets #62 and #118. cmlenz parents: 590 diff changeset	340
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	341 def __init__(self, source, basedir=None, filename=None, loader=None,
606 37ff75bb4301 Changed the default error handling mode to "strict". cmlenz parents: 605 diff changeset	342 encoding=None, lookup='strict', allow_exec=True):
427 55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	343 """Initialize a template from either a string, a file-like object, or
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	344 an already parsed markup stream.
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	345
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	346 :param source: a string, file-like object, or markup stream to read the
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	347 template from
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	348 :param basedir: the base directory containing the template file; when
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	349 loaded from a `TemplateLoader`, this will be the
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	350 directory on the template search path in which the
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	351 template was found
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	352 :param filename: the name of the template file, relative to the given
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	353 base directory
492 fd10321bb1ba Fix docstring typo. cmlenz parents: 475 diff changeset	354 :param loader: the `TemplateLoader` to use for loading included
fd10321bb1ba Fix docstring typo. cmlenz parents: 475 diff changeset	355 templates
427 55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	356 :param encoding: the encoding of the `source`
606 37ff75bb4301 Changed the default error handling mode to "strict". cmlenz parents: 605 diff changeset	357 :param lookup: the variable lookup mechanism; either "strict" (the
37ff75bb4301 Changed the default error handling mode to "strict". cmlenz parents: 605 diff changeset	358 default), "lenient", or a custom lookup class
545 619340e2d805 Support for Python code blocks in templates can now be disabled. Closes #123. cmlenz parents: 492 diff changeset	359 :param allow_exec: whether Python code blocks in templates should be
619340e2d805 Support for Python code blocks in templates can now be disabled. Closes #123. cmlenz parents: 492 diff changeset	360 allowed
619340e2d805 Support for Python code blocks in templates can now be disabled. Closes #123. cmlenz parents: 492 diff changeset	361
619340e2d805 Support for Python code blocks in templates can now be disabled. Closes #123. cmlenz parents: 492 diff changeset	362 :note: Changed in 0.5: Added the `allow_exec` argument
427 55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	363 """
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	364 self.basedir = basedir
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	365 self.filename = filename
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	366 if basedir and filename:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	367 self.filepath = os.path.join(basedir, filename)
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	368 else:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	369 self.filepath = filename
363 37e4b4bb0b53 Parse template includes at parse time to avoid some runtime overhead. cmlenz parents: 362 diff changeset	370 self.loader = loader
442 97544725bb7f Back out [510] and instead implement configurable error handling modes. The default is the old 0.3.x behaviour, but more strict error handling is available as an option. cmlenz parents: 438 diff changeset	371 self.lookup = lookup
545 619340e2d805 Support for Python code blocks in templates can now be disabled. Closes #123. cmlenz parents: 492 diff changeset	372 self.allow_exec = allow_exec
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	373
610 5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101). cmlenz parents: 609 diff changeset	374 self.filters = [self._flatten, self._eval, self._exec]
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101). cmlenz parents: 609 diff changeset	375 if loader:
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101). cmlenz parents: 609 diff changeset	376 self.filters.append(self._include)
5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101). cmlenz parents: 609 diff changeset	377
374 b146277eb54a `MarkupTemplate`s can now be instantiated from markup streams, in addition to strings and file-like objects. Thanks to David Fraser for the patch. Closes #69. cmlenz parents: 363 diff changeset	378 if isinstance(source, basestring):
b146277eb54a `MarkupTemplate`s can now be instantiated from markup streams, in addition to strings and file-like objects. Thanks to David Fraser for the patch. Closes #69. cmlenz parents: 363 diff changeset	379 source = StringIO(source)
b146277eb54a `MarkupTemplate`s can now be instantiated from markup streams, in addition to strings and file-like objects. Thanks to David Fraser for the patch. Closes #69. cmlenz parents: 363 diff changeset	380 else:
b146277eb54a `MarkupTemplate`s can now be instantiated from markup streams, in addition to strings and file-like objects. Thanks to David Fraser for the patch. Closes #69. cmlenz parents: 363 diff changeset	381 source = source
434 5692bc32ba5f * Better method to propogate the full path to the template file on parse errors. Supersedes r513. cmlenz parents: 427 diff changeset	382 try:
5692bc32ba5f * Better method to propogate the full path to the template file on parse errors. Supersedes r513. cmlenz parents: 427 diff changeset	383 self.stream = list(self._prepare(self._parse(source, encoding)))
5692bc32ba5f * Better method to propogate the full path to the template file on parse errors. Supersedes r513. cmlenz parents: 427 diff changeset	384 except ParseError, e:
5692bc32ba5f * Better method to propogate the full path to the template file on parse errors. Supersedes r513. cmlenz parents: 427 diff changeset	385 raise TemplateSyntaxError(e.msg, self.filepath, e.lineno, e.offset)
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	386
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	387 def __repr__(self):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	388 return '<%s "%s">' % (self.__class__.__name__, self.filename)
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	389
374 b146277eb54a `MarkupTemplate`s can now be instantiated from markup streams, in addition to strings and file-like objects. Thanks to David Fraser for the patch. Closes #69. cmlenz parents: 363 diff changeset	390 def _parse(self, source, encoding):
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	391 """Parse the template.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	392
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	393 The parsing stage parses the template and constructs a list of
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	394 directives that will be executed in the render stage. The input is
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	395 split up into literal output (text that does not depend on the context
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	396 data) and directives or expressions.
427 55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	397
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	398 :param source: a file-like object containing the XML source of the
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	399 template, or an XML event stream
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	400 :param encoding: the encoding of the `source`
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	401 """
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	402 raise NotImplementedError
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	403
351 0cc031745884 The `py:content`, `py:replace`, and `py:strip=""` directives are now expanded when the template is loaded (as opposed to when it's rendered). cmlenz parents: 345 diff changeset	404 def _prepare(self, stream):
427 55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	405 """Call the `attach` method of every directive found in the template.
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	406
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	407 :param stream: the event stream of the template
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	408 """
548 1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	409 from genshi.template.loader import TemplateNotFound
1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	410
351 0cc031745884 The `py:content`, `py:replace`, and `py:strip=""` directives are now expanded when the template is loaded (as opposed to when it's rendered). cmlenz parents: 345 diff changeset	411 for kind, data, pos in stream:
0cc031745884 The `py:content`, `py:replace`, and `py:strip=""` directives are now expanded when the template is loaded (as opposed to when it's rendered). cmlenz parents: 345 diff changeset	412 if kind is SUB:
362 fe40d34fb71d Follow-up to [431]: directives are no longer instantiated directly at parse time, but instead by the `attach()` method of the directive class (which replaces the `prepare()` method). cmlenz parents: 361 diff changeset	413 directives = []
fe40d34fb71d Follow-up to [431]: directives are no longer instantiated directly at parse time, but instead by the `attach()` method of the directive class (which replaces the `prepare()` method). cmlenz parents: 361 diff changeset	414 substream = data[1]
fe40d34fb71d Follow-up to [431]: directives are no longer instantiated directly at parse time, but instead by the `attach()` method of the directive class (which replaces the `prepare()` method). cmlenz parents: 361 diff changeset	415 for cls, value, namespaces, pos in data[0]:
fe40d34fb71d Follow-up to [431]: directives are no longer instantiated directly at parse time, but instead by the `attach()` method of the directive class (which replaces the `prepare()` method). cmlenz parents: 361 diff changeset	416 directive, substream = cls.attach(self, substream, value,
fe40d34fb71d Follow-up to [431]: directives are no longer instantiated directly at parse time, but instead by the `attach()` method of the directive class (which replaces the `prepare()` method). cmlenz parents: 361 diff changeset	417 namespaces, pos)
fe40d34fb71d Follow-up to [431]: directives are no longer instantiated directly at parse time, but instead by the `attach()` method of the directive class (which replaces the `prepare()` method). cmlenz parents: 361 diff changeset	418 if directive:
fe40d34fb71d Follow-up to [431]: directives are no longer instantiated directly at parse time, but instead by the `attach()` method of the directive class (which replaces the `prepare()` method). cmlenz parents: 361 diff changeset	419 directives.append(directive)
351 0cc031745884 The `py:content`, `py:replace`, and `py:strip=""` directives are now expanded when the template is loaded (as opposed to when it's rendered). cmlenz parents: 345 diff changeset	420 substream = self._prepare(substream)
0cc031745884 The `py:content`, `py:replace`, and `py:strip=""` directives are now expanded when the template is loaded (as opposed to when it's rendered). cmlenz parents: 345 diff changeset	421 if directives:
0cc031745884 The `py:content`, `py:replace`, and `py:strip=""` directives are now expanded when the template is loaded (as opposed to when it's rendered). cmlenz parents: 345 diff changeset	422 yield kind, (directives, list(substream)), pos
0cc031745884 The `py:content`, `py:replace`, and `py:strip=""` directives are now expanded when the template is loaded (as opposed to when it's rendered). cmlenz parents: 345 diff changeset	423 else:
0cc031745884 The `py:content`, `py:replace`, and `py:strip=""` directives are now expanded when the template is loaded (as opposed to when it's rendered). cmlenz parents: 345 diff changeset	424 for event in substream:
0cc031745884 The `py:content`, `py:replace`, and `py:strip=""` directives are now expanded when the template is loaded (as opposed to when it's rendered). cmlenz parents: 345 diff changeset	425 yield event
0cc031745884 The `py:content`, `py:replace`, and `py:strip=""` directives are now expanded when the template is loaded (as opposed to when it's rendered). cmlenz parents: 345 diff changeset	426 else:
475 b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	427 if kind is INCLUDE:
610 5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101). cmlenz parents: 609 diff changeset	428 href, cls, fallback = data
548 1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	429 if isinstance(href, basestring) and \
1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	430 not getattr(self.loader, 'auto_reload', True):
1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	431 # If the path to the included template is static, and
1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	432 # auto-reloading is disabled on the template loader,
1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	433 # the template is inlined into the stream
1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	434 try:
1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	435 tmpl = self.loader.load(href, relative_to=pos[0],
610 5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101). cmlenz parents: 609 diff changeset	436 cls=cls or self.__class__)
548 1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	437 for event in tmpl.stream:
1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	438 yield event
1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	439 except TemplateNotFound:
1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	440 if fallback is None:
1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	441 raise
1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	442 for event in self._prepare(fallback):
1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	443 yield event
1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	444 continue
590 36b5a03534a0 Fix includes so that they again raise an exception when the included template is not found and no fallback has been provided. cmlenz parents: 564 diff changeset	445 elif fallback:
548 1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	446 # Otherwise the include is performed at run time
639 8e11a6693bb3 Fix for XInclude fallbacks when auto-reloading is enabled. Closes #147. Thanks to rintaro@cpan.org for reporting the issue and providing a patch and test case! cmlenz parents: 636 diff changeset	447 data = href, cls, list(self._prepare(fallback))
548 1cc1afc39176 Implement static includes, which improves performance a bit when auto reloading is disabled. cmlenz parents: 545 diff changeset	448
351 0cc031745884 The `py:content`, `py:replace`, and `py:strip=""` directives are now expanded when the template is loaded (as opposed to when it's rendered). cmlenz parents: 345 diff changeset	449 yield kind, data, pos
0cc031745884 The `py:content`, `py:replace`, and `py:strip=""` directives are now expanded when the template is loaded (as opposed to when it's rendered). cmlenz parents: 345 diff changeset	450
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	451 def generate(self, args, *kwargs):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	452 """Apply the template to the given context data.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	453
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	454 Any keyword arguments are made available to the template as context
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	455 data.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	456
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	457 Only one positional argument is accepted: if it is provided, it must be
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	458 an instance of the `Context` class, and keyword arguments are ignored.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	459 This calling style is used for internal processing.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	460
427 55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	461 :return: a markup event stream representing the result of applying
55c574767df2 More API documentation. cmlenz parents: 425 diff changeset	462 the template to the context data.
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	463 """
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	464 vars = {}
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	465 if args:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	466 assert len(args) == 1
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	467 ctxt = args[0]
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	468 if ctxt is None:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	469 ctxt = Context(**kwargs)
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	470 else:
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	471 vars = kwargs
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	472 assert isinstance(ctxt, Context)
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	473 else:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	474 ctxt = Context(**kwargs)
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	475
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	476 stream = self.stream
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	477 for filter_ in self.filters:
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	478 stream = filter_(iter(stream), ctxt, **vars)
605 d0345c64da65 Text templates now default to rendering as plain text; it is no longer necessary to explicitly specify the "text" method to the `render()` or `serialize()` method of the generated markup stream. See tickets #62 and #118. cmlenz parents: 590 diff changeset	479 return Stream(stream, self.serializer)
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	480
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	481 def _eval(self, stream, ctxt, **vars):
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	482 """Internal stream filter that evaluates any expressions in `START` and
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	483 `TEXT` events.
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	484 """
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	485 filters = (self._flatten, self._eval)
636 699601cce3cc Follow-up to [751]: applying the optimization to text templates was actually slowing them down, so only do it for markup templates. cmlenz parents: 635 diff changeset	486 number_conv = self._number_conv
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	487
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	488 for kind, data, pos in stream:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	489
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	490 if kind is START and data[1]:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	491 # Attributes may still contain expressions in start tags at
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	492 # this point, so do some evaluation
345 2aa7ca37ae6a Make `Attrs` instances immutable. cmlenz parents: 336 diff changeset	493 tag, attrs = data
2aa7ca37ae6a Make `Attrs` instances immutable. cmlenz parents: 336 diff changeset	494 new_attrs = []
2aa7ca37ae6a Make `Attrs` instances immutable. cmlenz parents: 336 diff changeset	495 for name, substream in attrs:
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	496 if isinstance(substream, basestring):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	497 value = substream
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	498 else:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	499 values = []
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	500 for subkind, subdata, subpos in self._eval(substream,
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	501 ctxt,
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	502 **vars):
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	503 if subkind is TEXT:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	504 values.append(subdata)
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	505 value = [x for x in values if x is not None]
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	506 if not value:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	507 continue
345 2aa7ca37ae6a Make `Attrs` instances immutable. cmlenz parents: 336 diff changeset	508 new_attrs.append((name, u''.join(value)))
2aa7ca37ae6a Make `Attrs` instances immutable. cmlenz parents: 336 diff changeset	509 yield kind, (tag, Attrs(new_attrs)), pos
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	510
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	511 elif kind is EXPR:
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	512 result = _eval_expr(data, ctxt, **vars)
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	513 if result is not None:
635 7e666e3e4f1b Minor performance improvement for expressions that evaluate to numbers: the result is wrapped in a `Markup` object, meaning we'll not have to escape the string in the serialization stage. cmlenz parents: 610 diff changeset	514 # First check for a string, otherwise the iterable test
7e666e3e4f1b Minor performance improvement for expressions that evaluate to numbers: the result is wrapped in a `Markup` object, meaning we'll not have to escape the string in the serialization stage. cmlenz parents: 610 diff changeset	515 # below succeeds, and the string will be chopped up into
7e666e3e4f1b Minor performance improvement for expressions that evaluate to numbers: the result is wrapped in a `Markup` object, meaning we'll not have to escape the string in the serialization stage. cmlenz parents: 610 diff changeset	516 # individual characters
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	517 if isinstance(result, basestring):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	518 yield TEXT, result, pos
635 7e666e3e4f1b Minor performance improvement for expressions that evaluate to numbers: the result is wrapped in a `Markup` object, meaning we'll not have to escape the string in the serialization stage. cmlenz parents: 610 diff changeset	519 elif isinstance(result, (int, float, long)):
636 699601cce3cc Follow-up to [751]: applying the optimization to text templates was actually slowing them down, so only do it for markup templates. cmlenz parents: 635 diff changeset	520 yield TEXT, number_conv(result), pos
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	521 elif hasattr(result, '__iter__'):
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	522 substream = _ensure(result)
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	523 for filter_ in filters:
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	524 substream = filter_(substream, ctxt, **vars)
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	525 for event in substream:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	526 yield event
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	527 else:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	528 yield TEXT, unicode(result), pos
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	529
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	530 else:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	531 yield kind, data, pos
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	532
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	533 def _exec(self, stream, ctxt, **vars):
609 6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	534 """Internal stream filter that executes Python code blocks."""
6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	535 for event in stream:
6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	536 if event[0] is EXEC:
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	537 _exec_suite(event[1], ctxt, **vars)
609 6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	538 else:
6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	539 yield event
6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	540
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	541 def _flatten(self, stream, ctxt, **vars):
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	542 """Internal stream filter that expands `SUB` events in the stream."""
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	543 for event in stream:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	544 if event[0] is SUB:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	545 # This event is a list of directives and a list of nested
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	546 # events to which those directives should be applied
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	547 directives, substream = event[1]
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	548 substream = _apply_directives(substream, directives, ctxt,
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	549 **vars)
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	550 for event in self._flatten(substream, ctxt, **vars):
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	551 yield event
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	552 else:
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	553 yield event
7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	554
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	555 def _include(self, stream, ctxt, **vars):
475 b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	556 """Internal stream filter that performs inclusion of external
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	557 template files.
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	558 """
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	559 from genshi.template.loader import TemplateNotFound
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	560
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	561 for event in stream:
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	562 if event[0] is INCLUDE:
610 5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101). cmlenz parents: 609 diff changeset	563 href, cls, fallback = event[1]
475 b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	564 if not isinstance(href, basestring):
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	565 parts = []
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	566 for subkind, subdata, subpos in self._eval(href, ctxt,
af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	567 **vars):
475 b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	568 if subkind is TEXT:
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	569 parts.append(subdata)
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	570 href = u''.join([x for x in parts if x is not None])
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	571 try:
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	572 tmpl = self.loader.load(href, relative_to=event[2][0],
610 5e358de79e4c * XInclude elements in markup templates now support the `parse` attribute; when set to "xml" (the default), the include is processed as before, but when set to "text", the included template is parsed as a text template using the new syntax (ticket #101). cmlenz parents: 609 diff changeset	573 cls=cls or self.__class__)
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	574 for event in tmpl.generate(ctxt, **vars):
475 b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	575 yield event
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	576 except TemplateNotFound:
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	577 if fallback is None:
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	578 raise
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	579 for filter_ in self.filters:
703 af57b12e3dd2 merge in trunk up through r818 - fundamentally changed the way MatchSet works, but actually is more consistent now aflett parents: 687 diff changeset	580 fallback = filter_(iter(fallback), ctxt, **vars)
475 b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	581 for event in fallback:
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	582 yield event
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	583 else:
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	584 yield event
b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	585
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	586
609 6d4877844e28 Add support for Python code blocks in text templates using the new syntax. cmlenz parents: 606 diff changeset	587 EXEC = Template.EXEC
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	588 EXPR = Template.EXPR
475 b373f80f7763 Added include directive for text templates (#115). Thanks to Alastair for the original patch. cmlenz parents: 442 diff changeset	589 INCLUDE = Template.INCLUDE
336 7763f7aec949 Refactoring: `genshi.template` is now a package, it was getting way to crowded in that file. cmlenz parents: diff changeset	590 SUB = Template.SUB

Mercurial > genshi > mirror

annotate genshi/template/base.py @ 717:0e8b92905741 experimental-match-fastpaths