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a _�h:� � @ sH d Z ddlZddlmZ ddlZddlZddlZddlZddl Z ddl m Z ddl m Z ddlmZmZmZ ddlmZmZmZmZmZmZmZmZ ddlZejr�ddlm Z m Z d Z G d d � d �Z e � Z e!e!e!d �d d�Z"G dd� de#�Z$G dd� de#�Z%G dd� de%�Z&G dd� de%�Z'G dd� de#�Z(G dd� de(�Z)G dd � d e(�Z*G d d � d e(�Z+G d d � d e(�Z,G d!d"� d"e(�Z-G d#d$� d$e(�Z.G d%d&� d&e(�Z/G d'd(� d(e(�Z0G d)d*� d*e(�Z1G d+d,� d,e(�Z2G d-d.� d.e2�Z3G d/d0� d0e(�Z4G d1d2� d2e5�Z6G d3d4� d4e#�Z7G d5d6� d6e#�Z8e!e!d7�d8d9�Z9d=e8e$e!e!e*d:�d;d<�Z:dS )>a� A simple template system that compiles templates to Python code. Basic usage looks like:: t = template.Template("<html>{{ myvalue }}</html>") 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 <html> <head> <title>{% block title %}Default title{% end %}</title> </head> <body> <ul> {% for student in students %} {% block student %} <li>{{ escape(student.name) }}</li> {% end %} {% end %} </ul> </body> </html> ### bold.html {% extends "base.html" %} {% block title %}A bolder title{% end %} {% block student %} <li><span style="bold">{{ escape(student.name) }}</span></li> {% 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] %} <li>{{ escape(student.name) }}</li> {% 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 ``{# ... #}``. These tags may be escaped as ``{{!``, ``{%!``, and ``{#!`` if you need to include a literal ``{{``, ``{%``, or ``{#`` in the output. ``{% 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.:: <!-- base.html --> <title>{% block title %}Default title{% end %}</title> <!-- mypage.html --> {% 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)� ObjectDict�exec_in� unicode_type)�Any�Union�Callable�List�Dict�Iterable�Optional�TextIO)�Tuple�ContextManager� xhtml_escapec @ s e Zd ZdS )� _UnsetMarkerN)�__name__� __module__� __qualname__� r r ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/tornado/template.pyr � s r )�mode�text�returnc C sZ | dkr |S | dkr4t �dd|�}t �dd|�}|S | dkrJt �dd|�S td | ��d S ) a� Transform 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 �all�singlez([\t ]+)� z (\s*\n\s*)� Zonelinez(\s+)zinvalid whitespace mode %sN)�re�sub� Exception)r r r r r �filter_whitespace� s r# c @ s� e Zd ZdZddeedfeeef edeee f eee f edd�dd�Z e ed�d d �Z e d ed �d d �Ze d ed d �dd�ZdS )�Templatez�A compiled template. We compile into Python from the given template_string. You can generate the template from variables with generate(). z<string>N� BaseLoader)�template_string�name�loader�compress_whitespace� autoescape� whitespacer c C sP t �|�| _|tur0|dur$td��|r,dnd}|du rh|rJ|jrJ|j}n |�d�s^|�d�rdd}nd}|dustJ �t|d� t|t �s�|| _ n|r�|j | _ nt | _ |r�|j ni | _ t |t �|�|�}t| t|| ��| _| �|�| _|| _z,tt �| j�d| j�d d � d d d �| _W n4 t�yJ t| j��� }t�d| j|� � Y n0 dS )a� Construct a Template. :arg str template_string: the contents of the template file. :arg str name: the filename from which the template was loaded (used for error message). :arg tornado.template.BaseLoader loader: the `~tornado.template.BaseLoader` responsible for this template, used to resolve ``{% include %}`` and ``{% extend %}`` directives. :arg bool compress_whitespace: Deprecated since Tornado 4.3. Equivalent to ``whitespace="single"`` if true and ``whitespace="all"`` if false. :arg str autoescape: The name of a function in the template namespace, or ``None`` to disable escaping by default. :arg str whitespace: A string specifying treatment of whitespace; see `filter_whitespace` for options. .. versionchanged:: 4.3 Added ``whitespace`` parameter; deprecated ``compress_whitespace``. Nz2cannot set both whitespace and compress_whitespacer r z.htmlz.js� z%s.generated.py�.�_�execT)� dont_inheritz %s code: %s) r Z native_strr' �_UNSETr" r+ �endswithr# � isinstancer r* �_DEFAULT_AUTOESCAPE� namespace�_TemplateReader�_File�_parse�file�_generate_python�coder( �compileZ to_unicode�replace�compiled� _format_code�rstripr �error) �selfr& r' r( r) r* r+ �readerZformatted_coder r r �__init__ sD � zTemplate.__init__)�kwargsr c s� t jt jt jt jt jt jtt jtt f� j � dd�t � fdd�d�d� }|� � j� |� |� t� j|� t�tg t f |d �}t�� |� S )z0Generate this template with the given arguments.r- r. c s � j S �N)r; �r' �rB r r �<lambda>_ � z#Template.generate.<locals>.<lambda>)� get_source) r r � url_escape� json_encode�squeeze�linkify�datetimeZ_tt_utf8Z_tt_string_typesr � __loader__Z _tt_execute)r r rL rM rN rO rP �utf8r �bytesr' r= r �updater5 r r> �typing�castr � linecache� clearcache)rB rE r5 �executer rH r �generateP s$ � zTemplate.generate)r( r c C sv t � }z`i }| �|�}|�� |D ]}|�||� q"t||||d j�}|d �|� |�� W |�� S |�� 0 d S �Nr ) r �_get_ancestors�reverse�find_named_blocks� _CodeWriter�templaterZ �getvalue�close)rB r( �buffer� named_blocks� ancestorsZancestor�writerr r r r: k s �zTemplate._generate_pythonr7 c C sR | j g}| j jjD ]:}t|t�r|s,td��|�|j| j�}|�|� |�� q|S )Nz1{% extends %} block found, but no template loader) r9 �body�chunksr3 � _ExtendsBlock� ParseError�loadr' �extendr\ )rB r( re �chunkr` r r r r\ z s �zTemplate._get_ancestors)r r r �__doc__r1 r �strrS �boolr rD r rZ r r: r r\ r r r r r$ � s$ � � Kr$ c @ sz e Zd ZdZeddfeeeef edd�dd�Zdd�dd�Z deeed �d d �Z deee d �d d �Z ee d�dd�Z dS )r% z�Base class for template loaders. 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. N)r* r5 r+ r c C s* || _ |p i | _|| _i | _t�� | _dS )a� Construct 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. 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