# Configuration file for the Sphinx documentation builder.
#
# For the full list of built-in configuration values, see the documentation:
# https://www.sphinx-doc.org/en/master/usage/configuration.html

import ast
import datetime
import functools
import io
import os
import sys
import re

sys.path.insert(0, os.path.dirname(os.path.abspath('.')))

from pygments_lexer_pseudocode2.lexers.algpseudocode import AlgPseudocodeLexer


needs_sphinx = '2.1'
"""2.1: - :py:meth:Sphinx.add_lexer` takes a class as argument

"""

today = datetime.date.today().isoformat()

# -- Project information -----------------------------------------------------
# https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information

project = 'Pygments Pseudocode Lexer'
copyright = u'2026 Franz Glasner. © Copyright 2015 Simon Wachter'
author = 'Franz Glasner'
#
# Determine "release" and other release metadata dynamically from the
# package's "__version__" or other VCS data.
#
with io.open("../pygments_lexer_pseudocode2/__init__.py",
             "rt",
             encoding="utf-8") as relfp:
    verfiledata = relfp.read()
    release = ast.literal_eval(
        re.search(r"""^\s*__version__\s*=\s*(("|')[^"']*\2)""",
                  verfiledata,
                  re.MULTILINE).group(1))
    release_date = (
        ast.literal_eval(
            re.search(r"""^\s*__date__\s*=\s*(("|')[^"']*\2)""",
                      verfiledata,
                      re.MULTILINE).group(1))
        or "dev:%s" % (today,)
    )
    release_rev = ast.literal_eval(
        re.search(r"""^\s*__revision__\s*=\s*(("|')[^"']*\2)""",
                  verfiledata,
                  re.MULTILINE).group(1))
    if release_rev.startswith("|") or release_rev.endswith("|"):
        # Assume that make export (hg kwarchive) is not called.
        import subprocess
        try:
            release_rev = subprocess.check_output(
                ["hg", "id", "-i"], stderr=subprocess.STDOUT)
        except Exception:
            release_rev = "<unknown>"
        else:
            if sys.version_info[0] >= 3:
                release_rev = release_rev.decode("ascii")
            release_rev = "dev:%s" % (release_rev.strip(),)
        define_rest_keywords = True
    else:
        #
        # Assume that all keywords are expanded properly everywhere:
        # do not define special VCSxxx keyword below.
        #
        define_rest_keywords = False

version = release
primary_domain = None

# -- General configuration ---------------------------------------------------
# https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration

extensions = [
    "sphinx.ext.todo",
]

templates_path = ['_templates']
exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store', 'lexerlist.rst']

highlight_language = "none"

rst_prolog = """
.. role:: algpseudocode(code)
.. |release_date| replace:: %s
.. |release_rev| replace:: %s
""" % (release_date, release_rev)
if define_rest_keywords:
    rst_prolog += """\
.. |VCSJustDate| replace:: %s
.. |VCSRevision| replace:: %s
""" % (release_date, release_rev)
rst_epilog = """
.. _Pygments: https://pygments.org/
.. _Sphinx: https://www.sphinx-doc.org
.. _Python: https://www.python.org/
.. _Algpseudocodex: https://ctan.org/pkg/algpseudocodex
"""


# --- Options for todo extension ---------------------------------------------
todo_include_todos = True


# -- Options for HTML output -------------------------------------------------
# https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-html-output

html_static_path = ['_static']
html_extra_path = ['../LICENSES', './examples']
html_copy_source = False
html_show_sourcelink = False

#html_theme = 'alabaster'
html_theme = 'haiku'
html_title = 'The %s v%s' % (project, release)
html_short_title = html_title
html_last_updated_fmt = "%s (rv:%s)" % (today, release_rev)
#pygments_style = "sphinx"
pygments_style = "default"


def setup(app):
    #
    # Custom release_date and commit id variables with a custom substitution
    # |release_date| and |release_rev|'.
    #
    app.add_config_value('release_date', '', 'env')
    app.add_config_value('release_rev', '', 'env')

    #
    # Add a custom lexer: AlgPseudocodeLexer with custom init option "no_end"
    # Given lexer must be callable: so use an indirection with "partial".
    #
    # See also:
    # - https://stackoverflow.com/questions/11413203/sphinx-pygments-lexer-filter-extension
    #
    app.add_lexer("NoEndAlgPseudocode",
                  functools.partial(AlgPseudocodeLexer, no_end=True))
    # For developing a lexer with smoother error handling
    app.add_lexer("no-raiseonerror-algpseudocode",
                  functools.partial(AlgPseudocodeLexer,
                                    prohibit_raiseonerror_filter=True))
    #
    # To test with the custom filter that maps
    # Token.Error to Token.Generic.Error
    #
    app.add_lexer("genericerror-algpseudocode",
                  functools.partial(AlgPseudocodeLexer,
                                    filters=["errortogenericerror"]))