Mh& vdZddlZddlmZddlZddlZddlZddlZddl Z ddl m Z ddl m Z ddlmZmZmZddlmZmZmZmZmZmZmZmZddlZejrddlmZmZd ZGd d ZeZ d e!d e!de!fdZ"GddZ#GddZ$Gdde$Z%Gdde$Z&GddZ'Gdde'Z(Gdde'Z)Gdde'Z*Gd d!e'Z+Gd"d#e'Z,Gd$d%e'Z-Gd&d'e'Z.Gd(d)e'Z/Gd*d+e'Z0Gd,d-e'Z1Gd.d/e1Z2Gd0d1e'Z3Gd2d3e4Z5Gd4d5Z6Gd6d7Z7d8e!de!fd9Z8 d?d:e7d;e#dZ9dS)@aA simple template system that compiles templates to Python code. Basic usage looks like:: t = template.Template("{{ myvalue }}") print(t.generate(myvalue="XXX")) `Loader` is a class that loads templates from a root directory and caches the compiled templates:: loader = template.Loader("/home/btaylor") print(loader.load("test.html").generate(myvalue="XXX")) We compile all templates to raw Python. Error-reporting is currently... uh, interesting. Syntax for the templates:: ### base.html {% block title %}Default title{% end %} ### bold.html {% extends "base.html" %} {% block title %}A bolder title{% end %} {% block student %}
  • {{ escape(student.name) }}
    • {% end %} Unlike most other template systems, we do not put any restrictions on the expressions you can include in your statements. ``if`` and ``for`` blocks get translated exactly into Python, so you can do complex expressions like:: {% for student in [p for p in people if p.student and p.age > 23] %}
  • {{ escape(student.name) }}
    • {% end %} Translating directly to Python means you can apply functions to expressions easily, like the ``escape()`` function in the examples above. You can pass functions in to your template just like any other variable (In a `.RequestHandler`, override `.RequestHandler.get_template_namespace`):: ### Python code def add(x, y): return x + y template.execute(add=add) ### The template {{ add(1, 2) }} We provide the functions `escape() <.xhtml_escape>`, `.url_escape()`, `.json_encode()`, and `.squeeze()` to all templates by default. Typical applications do not create `Template` or `Loader` instances by hand, but instead use the `~.RequestHandler.render` and `~.RequestHandler.render_string` methods of `tornado.web.RequestHandler`, which load templates automatically based on the ``template_path`` `.Application` setting. Variable names beginning with ``_tt_`` are reserved by the template system and should not be used by application code. Syntax Reference ---------------- Template expressions are surrounded by double curly braces: ``{{ ... }}``. The contents may be any python expression, which will be escaped according to the current autoescape setting and inserted into the output. Other template directives use ``{% %}``. To comment out a section so that it is omitted from the output, surround it with ``{# ... #}``. To include a literal ``{{``, ``{%``, or ``{#`` in the output, escape them as ``{{!``, ``{%!``, and ``{#!``, respectively. ``{% apply *function* %}...{% end %}`` Applies a function to the output of all template code between ``apply`` and ``end``:: {% apply linkify %}{{name}} said: {{message}}{% end %} Note that as an implementation detail apply blocks are implemented as nested functions and thus may interact strangely with variables set via ``{% set %}``, or the use of ``{% break %}`` or ``{% continue %}`` within loops. ``{% autoescape *function* %}`` Sets the autoescape mode for the current file. This does not affect other files, even those referenced by ``{% include %}``. Note that autoescaping can also be configured globally, at the `.Application` or `Loader`.:: {% autoescape xhtml_escape %} {% autoescape None %} ``{% block *name* %}...{% end %}`` Indicates a named, replaceable block for use with ``{% extends %}``. Blocks in the parent template will be replaced with the contents of the same-named block in a child template.:: {% block title %}Default title{% end %} {% extends "base.html" %} {% block title %}My page title{% end %} ``{% comment ... %}`` A comment which will be removed from the template output. Note that there is no ``{% end %}`` tag; the comment goes from the word ``comment`` to the closing ``%}`` tag. ``{% extends *filename* %}`` Inherit from another template. Templates that use ``extends`` should contain one or more ``block`` tags to replace content from the parent template. Anything in the child template not contained in a ``block`` tag will be ignored. For an example, see the ``{% block %}`` tag. ``{% for *var* in *expr* %}...{% end %}`` Same as the python ``for`` statement. ``{% break %}`` and ``{% continue %}`` may be used inside the loop. ``{% from *x* import *y* %}`` Same as the python ``import`` statement. ``{% if *condition* %}...{% elif *condition* %}...{% else %}...{% end %}`` Conditional statement - outputs the first section whose condition is true. (The ``elif`` and ``else`` sections are optional) ``{% import *module* %}`` Same as the python ``import`` statement. ``{% include *filename* %}`` Includes another template file. The included file can see all the local variables as if it were copied directly to the point of the ``include`` directive (the ``{% autoescape %}`` directive is an exception). Alternately, ``{% module Template(filename, **kwargs) %}`` may be used to include another template with an isolated namespace. ``{% module *expr* %}`` Renders a `~tornado.web.UIModule`. The output of the ``UIModule`` is not escaped:: {% module Template("foo.html", arg=42) %} ``UIModules`` are a feature of the `tornado.web.RequestHandler` class (and specifically its ``render`` method) and will not work when the template system is used on its own in other contexts. ``{% raw *expr* %}`` Outputs the result of the given expression without autoescaping. ``{% set *x* = *y* %}`` Sets a local variable. ``{% try %}...{% except %}...{% else %}...{% finally %}...{% end %}`` Same as the python ``try`` statement. ``{% while *condition* %}... {% end %}`` Same as the python ``while`` statement. ``{% break %}`` and ``{% continue %}`` may be used inside the loop. ``{% whitespace *mode* %}`` Sets the whitespace mode for the remainder of the current file (or until the next ``{% whitespace %}`` directive). See `filter_whitespace` for available options. New in Tornado 4.3. N)StringIO)escape)app_log) ObjectDictexec_in unicode_type)AnyUnionCallableListDictIterableOptionalTextIO)TupleContextManager xhtml_escapeceZdZdS) _UnsetMarkerN)__name__ __module__ __qualname__P/var/www/html/test/jupyter/venv/lib/python3.11/site-packages/tornado/template.pyrrsDrrmodetextreturnc|dkr|S|dkr.tjdd|}tjdd|}|S|dkrtjdd|Std |z) aTransform whitespace in ``text`` according to ``mode``. Available modes are: * ``all``: Return all whitespace unmodified. * ``single``: Collapse consecutive whitespace with a single whitespace character, preserving newlines. * ``oneline``: Collapse all runs of whitespace into a single space character, removing all newlines in the process. .. versionadded:: 4.3 allsinglez([\t ]+) z (\s*\n\s*) onelinez(\s+)zinvalid whitespace mode %s)resub Exception)rrs rfilter_whitespacer(s{ u}}   vk3--vmT400   vhT***4t;<<Ntemplate_stringnameloader BaseLoadercompress_whitespace autoescape whitespacerctj||_|tur|t d|rdnd}|@|r|jr|j}n/|ds|drd}nd}|Jt|dt|ts||_ n|r |j |_ n t|_ |r|j ni|_ t|tj||}t|t|||_|||_||_ t)tj|jd|jd d zd d |_dS#t$rCt1|j}t5jd|j|wxYw)aConstruct a Template. :arg str template_string: the contents of the template file. :arg str name: the filename from which the template was loaded (used for error message). :arg tornado.template.BaseLoader loader: the `~tornado.template.BaseLoader` responsible for this template, used to resolve ``{% include %}`` and ``{% extend %}`` directives. :arg bool compress_whitespace: Deprecated since Tornado 4.3. Equivalent to ``whitespace="single"`` if true and ``whitespace="all"`` if false. :arg str autoescape: The name of a function in the template namespace, or ``None`` to disable escaping by default. :arg str whitespace: A string specifying treatment of whitespace; see `filter_whitespace` for options. .. versionchanged:: 4.3 Added ``whitespace`` parameter; deprecated ``compress_whitespace``. Nz2cannot set both whitespace and compress_whitespacer!r z.htmlz.jsz%s.generated.py._execT) dont_inheritz %s code: %s)r native_strr,_UNSETr'r1endswithr( isinstancerr0_DEFAULT_AUTOESCAPE namespace_TemplateReader_File_parsefile_generate_pythoncoder-compile to_unicodereplacecompiled _format_coderstriprerror) selfr+r,r-r/r0r1readerformatted_codes r__init__zTemplate.__init__s6%d++ f , ,% TUUU%8CeJ   '&+ '#. ==))'T]]5-A-A'!)JJ!&J%%%*b)))*l33 2(DOO  2$/DOO1DO-3;)) v'8'I'I:VV$vt 4 455 ))&11    $!$),,!DI$5$5c3$?$??! 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You must use a template loader to use template constructs like ``{% extends %}`` and ``{% include %}``. The loader caches all templates after they are loaded the first time. Nr0r=r1rcr||_|pi|_||_i|_t j|_dS)aConstruct a template loader. :arg str autoescape: The name of a function in the template namespace, such as "xhtml_escape", or ``None`` to disable autoescaping by default. :arg dict namespace: A dictionary to be added to the default template namespace, or ``None``. :arg str whitespace: A string specifying default behavior for whitespace in templates; see `filter_whitespace` for options. Default is "single" for files ending in ".html" and ".js" and "all" for other files. .. versionchanged:: 4.3 Added ``whitespace`` parameter. N)r0r=r1 templates threadingRLocklock)rKr0r=r1s rrNzBaseLoader.__init__s9*%"b$ O%% rcT|j5i|_ddddS#1swxYwYdS)z'Resets the cache of compiled templates.N)rrrKs rresetzBaseLoader.resetsu Y  DN                  s !!r, parent_pathct)z@Converts a possibly-relative path to absolute (used internally).NotImplementedErrorrKr,rs r resolve_pathzBaseLoader.resolve_paths!###rc|||}|j5||jvr|||j|<|j|cdddS#1swxYwYdS)zLoads a template.)rN)rrr_create_templaters rrzzBaseLoader.loads  ; ?? 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