File api.py has 895 lines of code (exceeds 250 allowed). Consider refactoring.

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2004-2023 Edgewall Software
# Copyright (C) 2004 Daniel Lundin <daniel@edgewall.com>
# Copyright (C) 2005-2006 Christopher Lenz <cmlenz@gmx.de>

Function render has a Cognitive Complexity of 50 (exceeds 5 allowed). Consider refactoring.

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    def render(self, context, mimetype, content, filename=None, url=None,
               annotations=None, force_source=False):
        """Render an XHTML preview of the given `content`.

        `content` is the same as an `IHTMLPreviewRenderer.render`'s

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Function convert_content has a Cognitive Complexity of 28 (exceeds 5 allowed). Consider refactoring.

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    def convert_content(self, req, mimetype, content, key, filename=None,
                        url=None, iterable=False):
        """Convert the given content to the target MIME type represented by
        `key`, which can be either a MIME type or a key. Returns a tuple of
        (content, output_mime_type, extension)."""

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Function get_mimetype has a Cognitive Complexity of 25 (exceeds 5 allowed). Consider refactoring.

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def get_mimetype(filename, content=None, mime_map=MIME_MAP,
                 mime_map_patterns={}):
    """Guess the most probable MIME type of a file with the given name.

    `filename` is either a filename (the lookup will then use the suffix)

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Function mime_map has a Cognitive Complexity of 24 (exceeds 5 allowed). Consider refactoring.

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    def mime_map(self):
        # Extend default extension to MIME type mappings with configured ones
        if not self._mime_map:
            self._mime_map = MIME_MAP.copy()
            # augment mime_map from `IHTMLPreviewRenderer`s

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Function _render_source has a Cognitive Complexity of 17 (exceeds 5 allowed). Consider refactoring.

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    def _render_source(self, context, lines, annotations):
        from trac.web.chrome import add_warning
        annotators, labels, titles = {}, {}, {}
        for annotator in self.annotators:
            atype, alabel, atitle = annotator.get_annotation_type()

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Function send_converted has a Cognitive Complexity of 13 (exceeds 5 allowed). Consider refactoring.

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    def send_converted(self, req, in_type, content, selector, filename='file'):
        """Helper method for converting `content` and sending it directly.

        `selector` can be either a key or a MIME Type."""
        from trac.web.chrome import Chrome

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Function preview_data has 8 arguments (exceeds 4 allowed). Consider refactoring.

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    def preview_data(self, context, content, length, mimetype, filename,

Function mime_map_patterns has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring.

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    def mime_map_patterns(self):
        if not self._mime_map_patterns:
            self._mime_map_patterns = {}
            for mapping in self.config['mimeviewer'] \
                    .getlist('mime_map_patterns'):

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Function render has 7 arguments (exceeds 4 allowed). Consider refactoring.

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    def render(self, context, mimetype, content, filename=None, url=None,

Function convert_content has 7 arguments (exceeds 4 allowed). Consider refactoring.

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    def convert_content(self, req, mimetype, content, key, filename=None,

Avoid deeply nested control flow statements.

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                        for keyword in kwds:
                            self._mime_map[keyword] = mimetype
            # augment/override mime_map from trac.ini
            for mapping in self.config['mimeviewer'].getlist('mime_map'):

Function get_supported_conversions has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.

Open

    def get_supported_conversions(self, mimetype):
        """Return a list of target MIME types as instances of the `namedtuple`
        `MimeConversion`. Output is ordered from best to worst quality.

        The `MimeConversion` `namedtuple` has fields: key, name, extension,

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Function annotate_row has 5 arguments (exceeds 4 allowed). Consider refactoring.

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    def annotate_row(self, context, row, lineno, line, data):

Function render has 5 arguments (exceeds 4 allowed). Consider refactoring.

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    def render(self, context, mimetype, content, filename=None, url=None):

Function render has 5 arguments (exceeds 4 allowed). Consider refactoring.

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    def render(self, context, mimetype, content, filename=None, url=None):

Function send_converted has 5 arguments (exceeds 4 allowed). Consider refactoring.

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    def send_converted(self, req, in_type, content, selector, filename='file'):

Function render has 5 arguments (exceeds 4 allowed). Consider refactoring.

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    def render(self, context, mimetype, content, filename=None, url=None):

Avoid too many return statements within this function.

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                    return self._render_source(context, result, annotations)

Avoid too many return statements within this function.

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        return mimetype

Avoid too many return statements within this function.

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                    return tag.div(class_='code')(tag.pre(result))

Function is_binary has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

    def is_binary(self, mimetype=None, filename=None, content=None):
        """Check if a file must be considered as binary."""
        if not mimetype and filename:
            mimetype = self.get_mimetype(filename, content)
        if mimetype:

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Function get_charset has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

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    def get_charset(self, content='', mimetype=None):
        """Infer the character encoding from the `content` or the `mimetype`.

        `content` is either a `bytes` or a `str` object.

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