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Current Directory: /opt/imh-python/lib/python3.9/site-packages/werkzeug
Viewing File: /opt/imh-python/lib/python3.9/site-packages/werkzeug/testapp.py
"""A small application that can be used to test a WSGI server and check
it for WSGI compliance.
"""
import base64
import os
import sys
import typing as t
from html import escape
from textwrap import wrap

from . import __version__ as _werkzeug_version
from .wrappers.request import Request
from .wrappers.response import Response

if t.TYPE_CHECKING:
    from _typeshed.wsgi import StartResponse
    from _typeshed.wsgi import WSGIEnvironment


logo = Response(
    base64.b64decode(
        """
R0lGODlhoACgAOMIAAEDACwpAEpCAGdgAJaKAM28AOnVAP3rAP/////////
//////////////////////yH5BAEKAAgALAAAAACgAKAAAAT+EMlJq704680R+F0ojmRpnuj0rWnrv
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dj78s1Fxnzo6yUCrV6rrDOkluG+QzCAUTbCwf9SrmMLzK6p+OPHx7DF+bsfMRq7Ec61Av9i6GLw23r
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kiIzwKucd0wsEHlLpe5yHXuc6FrNelOl7pY2+11kTWx7VpRu97dXA3DO1vbkhcb4zyvERYajQgAADs
="""
    ),
    mimetype="image/png",
)


TEMPLATE = """\
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
  "http://www.w3.org/TR/html4/loose.dtd">
<title>WSGI Information</title>
<style type="text/css">
  @import url(https://fonts.googleapis.com/css?family=Ubuntu);

  body       { font-family: 'Lucida Grande', 'Lucida Sans Unicode', 'Geneva',
               'Verdana', sans-serif; background-color: white; color: #000;
               font-size: 15px; text-align: center; }
  #logo      { float: right; padding: 0 0 10px 10px; }
  div.box    { text-align: left; width: 45em; margin: auto; padding: 50px 0;
               background-color: white; }
  h1, h2     { font-family: 'Ubuntu', 'Lucida Grande', 'Lucida Sans Unicode',
               'Geneva', 'Verdana', sans-serif; font-weight: normal; }
  h1         { margin: 0 0 30px 0; }
  h2         { font-size: 1.4em; margin: 1em 0 0.5em 0; }
  table      { width: 100%%; border-collapse: collapse; border: 1px solid #AFC5C9 }
  table th   { background-color: #AFC1C4; color: white; font-size: 0.72em;
               font-weight: normal; width: 18em; vertical-align: top;
               padding: 0.5em 0 0.1em 0.5em; }
  table td   { border: 1px solid #AFC5C9; padding: 0.1em 0 0.1em 0.5em; }
  code       { font-family: 'Consolas', 'Monaco', 'Bitstream Vera Sans Mono',
               monospace; font-size: 0.7em; }
  ul li      { line-height: 1.5em; }
  ul.path    { font-size: 0.7em; margin: 0 -30px; padding: 8px 30px;
               list-style: none; background: #E8EFF0; }
  ul.path li { line-height: 1.6em; }
  li.virtual { color: #999; text-decoration: underline; }
  li.exp     { background: white; }
</style>
<div class="box">
  <img src="?resource=logo" id="logo" alt="[The Werkzeug Logo]" />
  <h1>WSGI Information</h1>
  <p>
    This page displays all available information about the WSGI server and
    the underlying Python interpreter.
  <h2 id="python-interpreter">Python Interpreter</h2>
  <table>
    <tr>
      <th>Python Version
      <td>%(python_version)s
    <tr>
      <th>Platform
      <td>%(platform)s [%(os)s]
    <tr>
      <th>API Version
      <td>%(api_version)s
    <tr>
      <th>Byteorder
      <td>%(byteorder)s
    <tr>
      <th>Werkzeug Version
      <td>%(werkzeug_version)s
  </table>
  <h2 id="wsgi-environment">WSGI Environment</h2>
  <table>%(wsgi_env)s</table>
  <h2 id="installed-eggs">Installed Eggs</h2>
  <p>
    The following python packages were installed on the system as
    Python eggs:
  <ul>%(python_eggs)s</ul>
  <h2 id="sys-path">System Path</h2>
  <p>
    The following paths are the current contents of the load path.  The
    following entries are looked up for Python packages.  Note that not
    all items in this path are folders.  Gray and underlined items are
    entries pointing to invalid resources or used by custom import hooks
    such as the zip importer.
  <p>
    Items with a bright background were expanded for display from a relative
    path.  If you encounter such paths in the output you might want to check
    your setup as relative paths are usually problematic in multithreaded
    environments.
  <ul class="path">%(sys_path)s</ul>
</div>
"""


def iter_sys_path() -> t.Iterator[t.Tuple[str, bool, bool]]:
    if os.name == "posix":

        def strip(x: str) -> str:
            prefix = os.path.expanduser("~")
            if x.startswith(prefix):
                x = f"~{x[len(prefix) :]}"
            return x

    else:

        def strip(x: str) -> str:
            return x

    cwd = os.path.abspath(os.getcwd())
    for item in sys.path:
        path = os.path.join(cwd, item or os.path.curdir)
        yield strip(os.path.normpath(path)), not os.path.isdir(path), path != item


def render_testapp(req: Request) -> bytes:
    try:
        import pkg_resources
    except ImportError:
        eggs: t.Iterable[t.Any] = ()
    else:
        eggs = sorted(
            pkg_resources.working_set,
            key=lambda x: x.project_name.lower(),  # type: ignore
        )
    python_eggs = []
    for egg in eggs:
        try:
            version = egg.version
        except (ValueError, AttributeError):
            version = "unknown"
        python_eggs.append(
            f"<li>{escape(egg.project_name)} <small>[{escape(version)}]</small>"
        )

    wsgi_env = []
    sorted_environ = sorted(req.environ.items(), key=lambda x: repr(x[0]).lower())
    for key, value in sorted_environ:
        value = "".join(wrap(escape(repr(value))))
        wsgi_env.append(f"<tr><th>{escape(str(key))}<td><code>{value}</code>")

    sys_path = []
    for item, virtual, expanded in iter_sys_path():
        class_ = []
        if virtual:
            class_.append("virtual")
        if expanded:
            class_.append("exp")
        class_ = f' class="{" ".join(class_)}"' if class_ else ""
        sys_path.append(f"<li{class_}>{escape(item)}")

    return (
        TEMPLATE
        % {
            "python_version": "<br>".join(escape(sys.version).splitlines()),
            "platform": escape(sys.platform),
            "os": escape(os.name),
            "api_version": sys.api_version,
            "byteorder": sys.byteorder,
            "werkzeug_version": _werkzeug_version,
            "python_eggs": "\n".join(python_eggs),
            "wsgi_env": "\n".join(wsgi_env),
            "sys_path": "\n".join(sys_path),
        }
    ).encode("utf-8")


def test_app(
    environ: "WSGIEnvironment", start_response: "StartResponse"
) -> t.Iterable[bytes]:
    """Simple test application that dumps the environment.  You can use
    it to check if Werkzeug is working properly:

    .. sourcecode:: pycon

        >>> from werkzeug.serving import run_simple
        >>> from werkzeug.testapp import test_app
        >>> run_simple('localhost', 3000, test_app)
         * Running on http://localhost:3000/

    The application displays important information from the WSGI environment,
    the Python interpreter and the installed libraries.
    """
    req = Request(environ, populate_request=False)
    if req.args.get("resource") == "logo":
        response = logo
    else:
        response = Response(render_testapp(req), mimetype="text/html")
    return response(environ, start_response)


if __name__ == "__main__":
    from .serving import run_simple

    run_simple("localhost", 5000, test_app, use_reloader=True)
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