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937 lines
32 KiB
Python
937 lines
32 KiB
Python
"""
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A directive for including a Matplotlib plot in a Sphinx document
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================================================================
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This is a Sphinx extension providing a reStructuredText directive
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``.. plot::`` for including a plot in a Sphinx document.
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In HTML output, ``.. plot::`` will include a .png file with a link
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to a high-res .png and .pdf. In LaTeX output, it will include a .pdf.
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The plot content may be defined in one of three ways:
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1. **A path to a source file** as the argument to the directive::
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.. plot:: path/to/plot.py
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When a path to a source file is given, the content of the
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directive may optionally contain a caption for the plot::
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.. plot:: path/to/plot.py
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The plot caption.
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Additionally, one may specify the name of a function to call (with
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no arguments) immediately after importing the module::
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.. plot:: path/to/plot.py plot_function1
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2. Included as **inline content** to the directive::
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.. plot::
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import matplotlib.pyplot as plt
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plt.plot([1, 2, 3], [4, 5, 6])
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plt.title("A plotting exammple")
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3. Using **doctest** syntax::
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.. plot::
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A plotting example:
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>>> import matplotlib.pyplot as plt
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>>> plt.plot([1, 2, 3], [4, 5, 6])
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Options
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-------
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The ``.. plot::`` directive supports the following options:
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``:format:`` : {'python', 'doctest'}
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The format of the input. If unset, the format is auto-detected.
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``:include-source:`` : bool
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Whether to display the source code. The default can be changed using
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the ``plot_include_source`` variable in :file:`conf.py` (which itself
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defaults to False).
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``:show-source-link:`` : bool
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Whether to show a link to the source in HTML. The default can be
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changed using the ``plot_html_show_source_link`` variable in
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:file:`conf.py` (which itself defaults to True).
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``:context:`` : bool or str
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If provided, the code will be run in the context of all previous plot
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directives for which the ``:context:`` option was specified. This only
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applies to inline code plot directives, not those run from files. If
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the ``:context: reset`` option is specified, the context is reset
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for this and future plots, and previous figures are closed prior to
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running the code. ``:context: close-figs`` keeps the context but closes
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previous figures before running the code.
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``:nofigs:`` : bool
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If specified, the code block will be run, but no figures will be
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inserted. This is usually useful with the ``:context:`` option.
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``:caption:`` : str
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If specified, the option's argument will be used as a caption for the
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figure. This overwrites the caption given in the content, when the plot
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is generated from a file.
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Additionally, this directive supports all the options of the `image directive
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<https://docutils.sourceforge.io/docs/ref/rst/directives.html#image>`_,
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except for ``:target:`` (since plot will add its own target). These include
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``:alt:``, ``:height:``, ``:width:``, ``:scale:``, ``:align:`` and ``:class:``.
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Configuration options
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---------------------
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The plot directive has the following configuration options:
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plot_include_source
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Default value for the include-source option (default: False).
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plot_html_show_source_link
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Whether to show a link to the source in HTML (default: True).
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plot_pre_code
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Code that should be executed before each plot. If None (the default),
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it will default to a string containing::
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import numpy as np
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from matplotlib import pyplot as plt
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plot_basedir
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Base directory, to which ``plot::`` file names are relative to.
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If None or empty (the default), file names are relative to the
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directory where the file containing the directive is.
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plot_formats
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File formats to generate (default: ['png', 'hires.png', 'pdf']).
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List of tuples or strings::
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[(suffix, dpi), suffix, ...]
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that determine the file format and the DPI. For entries whose
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DPI was omitted, sensible defaults are chosen. When passing from
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the command line through sphinx_build the list should be passed as
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suffix:dpi,suffix:dpi, ...
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plot_html_show_formats
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Whether to show links to the files in HTML (default: True).
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plot_rcparams
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A dictionary containing any non-standard rcParams that should
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be applied before each plot (default: {}).
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plot_apply_rcparams
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By default, rcParams are applied when ``:context:`` option is not used
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in a plot directive. If set, this configuration option overrides this
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behavior and applies rcParams before each plot.
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plot_working_directory
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By default, the working directory will be changed to the directory of
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the example, so the code can get at its data files, if any. Also its
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path will be added to `sys.path` so it can import any helper modules
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sitting beside it. This configuration option can be used to specify
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a central directory (also added to `sys.path`) where data files and
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helper modules for all code are located.
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plot_template
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Provide a customized template for preparing restructured text.
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plot_srcset
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Allow the srcset image option for responsive image resolutions. List of
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strings with the multiplicative factors followed by an "x".
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e.g. ["2.0x", "1.5x"]. "2.0x" will create a png with the default "png"
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resolution from plot_formats, multiplied by 2. If plot_srcset is
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specified, the plot directive uses the
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:doc:`/api/sphinxext_figmpl_directive_api` (instead of the usual figure
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directive) in the intermediary rst file that is generated.
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The plot_srcset option is incompatible with *singlehtml* builds, and an
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error will be raised.
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Notes on how it works
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---------------------
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The plot directive runs the code it is given, either in the source file or the
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code under the directive. The figure created (if any) is saved in the sphinx
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build directory under a subdirectory named ``plot_directive``. It then creates
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an intermediate rst file that calls a ``.. figure:`` directive (or
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``.. figmpl::`` directive if ``plot_srcset`` is being used) and has links to
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the ``*.png`` files in the ``plot_directive`` directory. These translations can
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be customized by changing the *plot_template*. See the source of
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:doc:`/api/sphinxext_plot_directive_api` for the templates defined in *TEMPLATE*
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and *TEMPLATE_SRCSET*.
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"""
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import contextlib
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import doctest
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from io import StringIO
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import itertools
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import os
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from os.path import relpath
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from pathlib import Path
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import re
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import shutil
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import sys
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import textwrap
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import traceback
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from docutils.parsers.rst import directives, Directive
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from docutils.parsers.rst.directives.images import Image
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import jinja2 # Sphinx dependency.
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from sphinx.errors import ExtensionError
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import matplotlib
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from matplotlib.backend_bases import FigureManagerBase
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import matplotlib.pyplot as plt
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from matplotlib import _pylab_helpers, cbook
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matplotlib.use("agg")
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__version__ = 2
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# -----------------------------------------------------------------------------
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# Registration hook
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# -----------------------------------------------------------------------------
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def _option_boolean(arg):
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if not arg or not arg.strip():
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# no argument given, assume used as a flag
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return True
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elif arg.strip().lower() in ('no', '0', 'false'):
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return False
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elif arg.strip().lower() in ('yes', '1', 'true'):
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return True
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else:
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raise ValueError(f'{arg!r} unknown boolean')
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def _option_context(arg):
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if arg in [None, 'reset', 'close-figs']:
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return arg
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raise ValueError("Argument should be None or 'reset' or 'close-figs'")
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def _option_format(arg):
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return directives.choice(arg, ('python', 'doctest'))
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def mark_plot_labels(app, document):
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"""
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To make plots referenceable, we need to move the reference from the
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"htmlonly" (or "latexonly") node to the actual figure node itself.
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"""
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for name, explicit in document.nametypes.items():
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if not explicit:
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continue
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labelid = document.nameids[name]
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if labelid is None:
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continue
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node = document.ids[labelid]
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if node.tagname in ('html_only', 'latex_only'):
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for n in node:
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if n.tagname == 'figure':
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sectname = name
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for c in n:
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if c.tagname == 'caption':
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sectname = c.astext()
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break
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node['ids'].remove(labelid)
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node['names'].remove(name)
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n['ids'].append(labelid)
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n['names'].append(name)
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document.settings.env.labels[name] = \
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document.settings.env.docname, labelid, sectname
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break
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class PlotDirective(Directive):
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"""The ``.. plot::`` directive, as documented in the module's docstring."""
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has_content = True
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required_arguments = 0
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optional_arguments = 2
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final_argument_whitespace = False
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option_spec = {
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'alt': directives.unchanged,
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'height': directives.length_or_unitless,
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'width': directives.length_or_percentage_or_unitless,
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'scale': directives.nonnegative_int,
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'align': Image.align,
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'class': directives.class_option,
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'include-source': _option_boolean,
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'show-source-link': _option_boolean,
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'format': _option_format,
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'context': _option_context,
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'nofigs': directives.flag,
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'caption': directives.unchanged,
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}
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def run(self):
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"""Run the plot directive."""
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try:
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return run(self.arguments, self.content, self.options,
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self.state_machine, self.state, self.lineno)
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except Exception as e:
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raise self.error(str(e))
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def _copy_css_file(app, exc):
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if exc is None and app.builder.format == 'html':
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src = cbook._get_data_path('plot_directive/plot_directive.css')
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dst = app.outdir / Path('_static')
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dst.mkdir(exist_ok=True)
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# Use copyfile because we do not want to copy src's permissions.
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shutil.copyfile(src, dst / Path('plot_directive.css'))
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def setup(app):
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setup.app = app
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setup.config = app.config
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setup.confdir = app.confdir
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app.add_directive('plot', PlotDirective)
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app.add_config_value('plot_pre_code', None, True)
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app.add_config_value('plot_include_source', False, True)
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app.add_config_value('plot_html_show_source_link', True, True)
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app.add_config_value('plot_formats', ['png', 'hires.png', 'pdf'], True)
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app.add_config_value('plot_basedir', None, True)
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app.add_config_value('plot_html_show_formats', True, True)
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app.add_config_value('plot_rcparams', {}, True)
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app.add_config_value('plot_apply_rcparams', False, True)
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app.add_config_value('plot_working_directory', None, True)
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app.add_config_value('plot_template', None, True)
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app.add_config_value('plot_srcset', [], True)
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app.connect('doctree-read', mark_plot_labels)
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app.add_css_file('plot_directive.css')
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app.connect('build-finished', _copy_css_file)
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metadata = {'parallel_read_safe': True, 'parallel_write_safe': True,
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'version': matplotlib.__version__}
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return metadata
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# -----------------------------------------------------------------------------
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# Doctest handling
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# -----------------------------------------------------------------------------
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def contains_doctest(text):
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try:
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# check if it's valid Python as-is
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compile(text, '<string>', 'exec')
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return False
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except SyntaxError:
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pass
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r = re.compile(r'^\s*>>>', re.M)
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m = r.search(text)
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return bool(m)
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def _split_code_at_show(text, function_name):
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"""Split code at plt.show()."""
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is_doctest = contains_doctest(text)
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if function_name is None:
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parts = []
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part = []
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for line in text.split("\n"):
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if ((not is_doctest and line.startswith('plt.show(')) or
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(is_doctest and line.strip() == '>>> plt.show()')):
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part.append(line)
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parts.append("\n".join(part))
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part = []
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else:
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part.append(line)
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if "\n".join(part).strip():
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parts.append("\n".join(part))
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else:
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parts = [text]
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return is_doctest, parts
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# -----------------------------------------------------------------------------
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# Template
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# -----------------------------------------------------------------------------
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_SOURCECODE = """
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{{ source_code }}
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.. only:: html
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{% if src_name or (html_show_formats and not multi_image) %}
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(
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{%- if src_name -%}
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:download:`Source code <{{ build_dir }}/{{ src_name }}>`
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{%- endif -%}
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{%- if html_show_formats and not multi_image -%}
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{%- for img in images -%}
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{%- for fmt in img.formats -%}
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{%- if src_name or not loop.first -%}, {% endif -%}
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:download:`{{ fmt }} <{{ build_dir }}/{{ img.basename }}.{{ fmt }}>`
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{%- endfor -%}
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{%- endfor -%}
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{%- endif -%}
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)
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{% endif %}
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"""
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TEMPLATE_SRCSET = _SOURCECODE + """
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{% for img in images %}
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.. figure-mpl:: {{ build_dir }}/{{ img.basename }}.{{ default_fmt }}
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{% for option in options -%}
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{{ option }}
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{% endfor %}
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{%- if caption -%}
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{{ caption }} {# appropriate leading whitespace added beforehand #}
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{% endif -%}
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{%- if srcset -%}
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:srcset: {{ build_dir }}/{{ img.basename }}.{{ default_fmt }}
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{%- for sr in srcset -%}
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, {{ build_dir }}/{{ img.basename }}.{{ sr }}.{{ default_fmt }} {{sr}}
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{%- endfor -%}
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{% endif %}
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{% if html_show_formats and multi_image %}
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(
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{%- for fmt in img.formats -%}
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{%- if not loop.first -%}, {% endif -%}
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:download:`{{ fmt }} <{{ build_dir }}/{{ img.basename }}.{{ fmt }}>`
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{%- endfor -%}
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)
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{% endif %}
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{% endfor %}
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.. only:: not html
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{% for img in images %}
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.. figure-mpl:: {{ build_dir }}/{{ img.basename }}.*
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{% for option in options -%}
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{{ option }}
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{% endfor -%}
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{{ caption }} {# appropriate leading whitespace added beforehand #}
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{% endfor %}
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"""
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TEMPLATE = _SOURCECODE + """
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{% for img in images %}
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.. figure:: {{ build_dir }}/{{ img.basename }}.{{ default_fmt }}
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{% for option in options -%}
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{{ option }}
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{% endfor %}
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|
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{% if html_show_formats and multi_image -%}
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(
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{%- for fmt in img.formats -%}
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{%- if not loop.first -%}, {% endif -%}
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:download:`{{ fmt }} <{{ build_dir }}/{{ img.basename }}.{{ fmt }}>`
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{%- endfor -%}
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)
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{%- endif -%}
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{{ caption }} {# appropriate leading whitespace added beforehand #}
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{% endfor %}
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.. only:: not html
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{% for img in images %}
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.. figure:: {{ build_dir }}/{{ img.basename }}.*
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{% for option in options -%}
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{{ option }}
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|
{% endfor -%}
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{{ caption }} {# appropriate leading whitespace added beforehand #}
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{% endfor %}
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|
"""
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exception_template = """
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.. only:: html
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[`source code <%(linkdir)s/%(basename)s.py>`__]
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Exception occurred rendering plot.
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"""
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# the context of the plot for all directives specified with the
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# :context: option
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plot_context = dict()
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|
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class ImageFile:
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|
def __init__(self, basename, dirname):
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self.basename = basename
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self.dirname = dirname
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self.formats = []
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def filename(self, format):
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return os.path.join(self.dirname, f"{self.basename}.{format}")
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def filenames(self):
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return [self.filename(fmt) for fmt in self.formats]
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|
|
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def out_of_date(original, derived, includes=None):
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|
"""
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Return whether *derived* is out-of-date relative to *original* or any of
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the RST files included in it using the RST include directive (*includes*).
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|
*derived* and *original* are full paths, and *includes* is optionally a
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|
list of full paths which may have been included in the *original*.
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"""
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if not os.path.exists(derived):
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return True
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if includes is None:
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includes = []
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files_to_check = [original, *includes]
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def out_of_date_one(original, derived_mtime):
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return (os.path.exists(original) and
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derived_mtime < os.stat(original).st_mtime)
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derived_mtime = os.stat(derived).st_mtime
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return any(out_of_date_one(f, derived_mtime) for f in files_to_check)
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|
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class PlotError(RuntimeError):
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pass
|
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|
|
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def _run_code(code, code_path, ns=None, function_name=None):
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"""
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|
Import a Python module from a path, and run the function given by
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name, if function_name is not None.
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|
"""
|
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|
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# Change the working directory to the directory of the example, so
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|
# it can get at its data files, if any. Add its path to sys.path
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|
# so it can import any helper modules sitting beside it.
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|
pwd = os.getcwd()
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|
if setup.config.plot_working_directory is not None:
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|
try:
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|
os.chdir(setup.config.plot_working_directory)
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|
except OSError as err:
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|
raise OSError(f'{err}\n`plot_working_directory` option in '
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|
f'Sphinx configuration file must be a valid '
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|
f'directory path') from err
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|
except TypeError as err:
|
|
raise TypeError(f'{err}\n`plot_working_directory` option in '
|
|
f'Sphinx configuration file must be a string or '
|
|
f'None') from err
|
|
elif code_path is not None:
|
|
dirname = os.path.abspath(os.path.dirname(code_path))
|
|
os.chdir(dirname)
|
|
|
|
with cbook._setattr_cm(
|
|
sys, argv=[code_path], path=[os.getcwd(), *sys.path]), \
|
|
contextlib.redirect_stdout(StringIO()):
|
|
try:
|
|
if ns is None:
|
|
ns = {}
|
|
if not ns:
|
|
if setup.config.plot_pre_code is None:
|
|
exec('import numpy as np\n'
|
|
'from matplotlib import pyplot as plt\n', ns)
|
|
else:
|
|
exec(str(setup.config.plot_pre_code), ns)
|
|
if "__main__" in code:
|
|
ns['__name__'] = '__main__'
|
|
|
|
# Patch out non-interactive show() to avoid triggering a warning.
|
|
with cbook._setattr_cm(FigureManagerBase, show=lambda self: None):
|
|
exec(code, ns)
|
|
if function_name is not None:
|
|
exec(function_name + "()", ns)
|
|
|
|
except (Exception, SystemExit) as err:
|
|
raise PlotError(traceback.format_exc()) from err
|
|
finally:
|
|
os.chdir(pwd)
|
|
return ns
|
|
|
|
|
|
def clear_state(plot_rcparams, close=True):
|
|
if close:
|
|
plt.close('all')
|
|
matplotlib.rc_file_defaults()
|
|
matplotlib.rcParams.update(plot_rcparams)
|
|
|
|
|
|
def get_plot_formats(config):
|
|
default_dpi = {'png': 80, 'hires.png': 200, 'pdf': 200}
|
|
formats = []
|
|
plot_formats = config.plot_formats
|
|
for fmt in plot_formats:
|
|
if isinstance(fmt, str):
|
|
if ':' in fmt:
|
|
suffix, dpi = fmt.split(':')
|
|
formats.append((str(suffix), int(dpi)))
|
|
else:
|
|
formats.append((fmt, default_dpi.get(fmt, 80)))
|
|
elif isinstance(fmt, (tuple, list)) and len(fmt) == 2:
|
|
formats.append((str(fmt[0]), int(fmt[1])))
|
|
else:
|
|
raise PlotError('invalid image format "%r" in plot_formats' % fmt)
|
|
return formats
|
|
|
|
|
|
def _parse_srcset(entries):
|
|
"""
|
|
Parse srcset for multiples...
|
|
"""
|
|
srcset = {}
|
|
for entry in entries:
|
|
entry = entry.strip()
|
|
if len(entry) >= 2:
|
|
mult = entry[:-1]
|
|
srcset[float(mult)] = entry
|
|
else:
|
|
raise ExtensionError(f'srcset argument {entry!r} is invalid.')
|
|
return srcset
|
|
|
|
|
|
def render_figures(code, code_path, output_dir, output_base, context,
|
|
function_name, config, context_reset=False,
|
|
close_figs=False,
|
|
code_includes=None):
|
|
"""
|
|
Run a pyplot script and save the images in *output_dir*.
|
|
|
|
Save the images under *output_dir* with file names derived from
|
|
*output_base*
|
|
"""
|
|
|
|
if function_name is not None:
|
|
output_base = f'{output_base}_{function_name}'
|
|
formats = get_plot_formats(config)
|
|
|
|
# Try to determine if all images already exist
|
|
|
|
is_doctest, code_pieces = _split_code_at_show(code, function_name)
|
|
# Look for single-figure output files first
|
|
img = ImageFile(output_base, output_dir)
|
|
for format, dpi in formats:
|
|
if context or out_of_date(code_path, img.filename(format),
|
|
includes=code_includes):
|
|
all_exists = False
|
|
break
|
|
img.formats.append(format)
|
|
else:
|
|
all_exists = True
|
|
|
|
if all_exists:
|
|
return [(code, [img])]
|
|
|
|
# Then look for multi-figure output files
|
|
results = []
|
|
for i, code_piece in enumerate(code_pieces):
|
|
images = []
|
|
for j in itertools.count():
|
|
if len(code_pieces) > 1:
|
|
img = ImageFile('%s_%02d_%02d' % (output_base, i, j),
|
|
output_dir)
|
|
else:
|
|
img = ImageFile('%s_%02d' % (output_base, j), output_dir)
|
|
for fmt, dpi in formats:
|
|
if context or out_of_date(code_path, img.filename(fmt),
|
|
includes=code_includes):
|
|
all_exists = False
|
|
break
|
|
img.formats.append(fmt)
|
|
|
|
# assume that if we have one, we have them all
|
|
if not all_exists:
|
|
all_exists = (j > 0)
|
|
break
|
|
images.append(img)
|
|
if not all_exists:
|
|
break
|
|
results.append((code_piece, images))
|
|
else:
|
|
all_exists = True
|
|
|
|
if all_exists:
|
|
return results
|
|
|
|
# We didn't find the files, so build them
|
|
|
|
results = []
|
|
ns = plot_context if context else {}
|
|
|
|
if context_reset:
|
|
clear_state(config.plot_rcparams)
|
|
plot_context.clear()
|
|
|
|
close_figs = not context or close_figs
|
|
|
|
for i, code_piece in enumerate(code_pieces):
|
|
|
|
if not context or config.plot_apply_rcparams:
|
|
clear_state(config.plot_rcparams, close_figs)
|
|
elif close_figs:
|
|
plt.close('all')
|
|
|
|
_run_code(doctest.script_from_examples(code_piece) if is_doctest
|
|
else code_piece,
|
|
code_path, ns, function_name)
|
|
|
|
images = []
|
|
fig_managers = _pylab_helpers.Gcf.get_all_fig_managers()
|
|
for j, figman in enumerate(fig_managers):
|
|
if len(fig_managers) == 1 and len(code_pieces) == 1:
|
|
img = ImageFile(output_base, output_dir)
|
|
elif len(code_pieces) == 1:
|
|
img = ImageFile("%s_%02d" % (output_base, j), output_dir)
|
|
else:
|
|
img = ImageFile("%s_%02d_%02d" % (output_base, i, j),
|
|
output_dir)
|
|
images.append(img)
|
|
|
|
for fmt, dpi in formats:
|
|
try:
|
|
figman.canvas.figure.savefig(img.filename(fmt), dpi=dpi)
|
|
if fmt == formats[0][0] and config.plot_srcset:
|
|
# save a 2x, 3x etc version of the default...
|
|
srcset = _parse_srcset(config.plot_srcset)
|
|
for mult, suffix in srcset.items():
|
|
fm = f'{suffix}.{fmt}'
|
|
img.formats.append(fm)
|
|
figman.canvas.figure.savefig(img.filename(fm),
|
|
dpi=int(dpi * mult))
|
|
except Exception as err:
|
|
raise PlotError(traceback.format_exc()) from err
|
|
img.formats.append(fmt)
|
|
|
|
results.append((code_piece, images))
|
|
|
|
if not context or config.plot_apply_rcparams:
|
|
clear_state(config.plot_rcparams, close=not context)
|
|
|
|
return results
|
|
|
|
|
|
def run(arguments, content, options, state_machine, state, lineno):
|
|
document = state_machine.document
|
|
config = document.settings.env.config
|
|
nofigs = 'nofigs' in options
|
|
|
|
if config.plot_srcset and setup.app.builder.name == 'singlehtml':
|
|
raise ExtensionError(
|
|
'plot_srcset option not compatible with single HTML writer')
|
|
|
|
formats = get_plot_formats(config)
|
|
default_fmt = formats[0][0]
|
|
|
|
options.setdefault('include-source', config.plot_include_source)
|
|
options.setdefault('show-source-link', config.plot_html_show_source_link)
|
|
|
|
if 'class' in options:
|
|
# classes are parsed into a list of string, and output by simply
|
|
# printing the list, abusing the fact that RST guarantees to strip
|
|
# non-conforming characters
|
|
options['class'] = ['plot-directive'] + options['class']
|
|
else:
|
|
options.setdefault('class', ['plot-directive'])
|
|
keep_context = 'context' in options
|
|
context_opt = None if not keep_context else options['context']
|
|
|
|
rst_file = document.attributes['source']
|
|
rst_dir = os.path.dirname(rst_file)
|
|
|
|
if len(arguments):
|
|
if not config.plot_basedir:
|
|
source_file_name = os.path.join(setup.app.builder.srcdir,
|
|
directives.uri(arguments[0]))
|
|
else:
|
|
source_file_name = os.path.join(setup.confdir, config.plot_basedir,
|
|
directives.uri(arguments[0]))
|
|
# If there is content, it will be passed as a caption.
|
|
caption = '\n'.join(content)
|
|
|
|
# Enforce unambiguous use of captions.
|
|
if "caption" in options:
|
|
if caption:
|
|
raise ValueError(
|
|
'Caption specified in both content and options.'
|
|
' Please remove ambiguity.'
|
|
)
|
|
# Use caption option
|
|
caption = options["caption"]
|
|
|
|
# If the optional function name is provided, use it
|
|
if len(arguments) == 2:
|
|
function_name = arguments[1]
|
|
else:
|
|
function_name = None
|
|
|
|
code = Path(source_file_name).read_text(encoding='utf-8')
|
|
output_base = os.path.basename(source_file_name)
|
|
else:
|
|
source_file_name = rst_file
|
|
code = textwrap.dedent("\n".join(map(str, content)))
|
|
counter = document.attributes.get('_plot_counter', 0) + 1
|
|
document.attributes['_plot_counter'] = counter
|
|
base, ext = os.path.splitext(os.path.basename(source_file_name))
|
|
output_base = '%s-%d.py' % (base, counter)
|
|
function_name = None
|
|
caption = options.get('caption', '')
|
|
|
|
base, source_ext = os.path.splitext(output_base)
|
|
if source_ext in ('.py', '.rst', '.txt'):
|
|
output_base = base
|
|
else:
|
|
source_ext = ''
|
|
|
|
# ensure that LaTeX includegraphics doesn't choke in foo.bar.pdf filenames
|
|
output_base = output_base.replace('.', '-')
|
|
|
|
# is it in doctest format?
|
|
is_doctest = contains_doctest(code)
|
|
if 'format' in options:
|
|
if options['format'] == 'python':
|
|
is_doctest = False
|
|
else:
|
|
is_doctest = True
|
|
|
|
# determine output directory name fragment
|
|
source_rel_name = relpath(source_file_name, setup.confdir)
|
|
source_rel_dir = os.path.dirname(source_rel_name).lstrip(os.path.sep)
|
|
|
|
# build_dir: where to place output files (temporarily)
|
|
build_dir = os.path.join(os.path.dirname(setup.app.doctreedir),
|
|
'plot_directive',
|
|
source_rel_dir)
|
|
# get rid of .. in paths, also changes pathsep
|
|
# see note in Python docs for warning about symbolic links on Windows.
|
|
# need to compare source and dest paths at end
|
|
build_dir = os.path.normpath(build_dir)
|
|
os.makedirs(build_dir, exist_ok=True)
|
|
|
|
# how to link to files from the RST file
|
|
try:
|
|
build_dir_link = relpath(build_dir, rst_dir).replace(os.path.sep, '/')
|
|
except ValueError:
|
|
# on Windows, relpath raises ValueError when path and start are on
|
|
# different mounts/drives
|
|
build_dir_link = build_dir
|
|
|
|
# get list of included rst files so that the output is updated when any
|
|
# plots in the included files change. These attributes are modified by the
|
|
# include directive (see the docutils.parsers.rst.directives.misc module).
|
|
try:
|
|
source_file_includes = [os.path.join(os.getcwd(), t[0])
|
|
for t in state.document.include_log]
|
|
except AttributeError:
|
|
# the document.include_log attribute only exists in docutils >=0.17,
|
|
# before that we need to inspect the state machine
|
|
possible_sources = {os.path.join(setup.confdir, t[0])
|
|
for t in state_machine.input_lines.items}
|
|
source_file_includes = [f for f in possible_sources
|
|
if os.path.isfile(f)]
|
|
# remove the source file itself from the includes
|
|
try:
|
|
source_file_includes.remove(source_file_name)
|
|
except ValueError:
|
|
pass
|
|
|
|
# save script (if necessary)
|
|
if options['show-source-link']:
|
|
Path(build_dir, output_base + source_ext).write_text(
|
|
doctest.script_from_examples(code)
|
|
if source_file_name == rst_file and is_doctest
|
|
else code,
|
|
encoding='utf-8')
|
|
|
|
# make figures
|
|
try:
|
|
results = render_figures(code=code,
|
|
code_path=source_file_name,
|
|
output_dir=build_dir,
|
|
output_base=output_base,
|
|
context=keep_context,
|
|
function_name=function_name,
|
|
config=config,
|
|
context_reset=context_opt == 'reset',
|
|
close_figs=context_opt == 'close-figs',
|
|
code_includes=source_file_includes)
|
|
errors = []
|
|
except PlotError as err:
|
|
reporter = state.memo.reporter
|
|
sm = reporter.system_message(
|
|
2, "Exception occurred in plotting {}\n from {}:\n{}".format(
|
|
output_base, source_file_name, err),
|
|
line=lineno)
|
|
results = [(code, [])]
|
|
errors = [sm]
|
|
|
|
# Properly indent the caption
|
|
if caption and config.plot_srcset:
|
|
caption = ':caption: ' + caption.replace('\n', ' ')
|
|
elif caption:
|
|
caption = '\n' + '\n'.join(' ' + line.strip()
|
|
for line in caption.split('\n'))
|
|
# generate output restructuredtext
|
|
total_lines = []
|
|
for j, (code_piece, images) in enumerate(results):
|
|
if options['include-source']:
|
|
if is_doctest:
|
|
lines = ['', *code_piece.splitlines()]
|
|
else:
|
|
lines = ['.. code-block:: python', '',
|
|
*textwrap.indent(code_piece, ' ').splitlines()]
|
|
source_code = "\n".join(lines)
|
|
else:
|
|
source_code = ""
|
|
|
|
if nofigs:
|
|
images = []
|
|
|
|
if 'alt' in options:
|
|
options['alt'] = options['alt'].replace('\n', ' ')
|
|
|
|
opts = [
|
|
f':{key}: {val}' for key, val in options.items()
|
|
if key in ('alt', 'height', 'width', 'scale', 'align', 'class')]
|
|
|
|
# Not-None src_name signals the need for a source download in the
|
|
# generated html
|
|
if j == 0 and options['show-source-link']:
|
|
src_name = output_base + source_ext
|
|
else:
|
|
src_name = None
|
|
if config.plot_srcset:
|
|
srcset = [*_parse_srcset(config.plot_srcset).values()]
|
|
template = TEMPLATE_SRCSET
|
|
else:
|
|
srcset = None
|
|
template = TEMPLATE
|
|
|
|
result = jinja2.Template(config.plot_template or template).render(
|
|
default_fmt=default_fmt,
|
|
build_dir=build_dir_link,
|
|
src_name=src_name,
|
|
multi_image=len(images) > 1,
|
|
options=opts,
|
|
srcset=srcset,
|
|
images=images,
|
|
source_code=source_code,
|
|
html_show_formats=config.plot_html_show_formats and len(images),
|
|
caption=caption)
|
|
total_lines.extend(result.split("\n"))
|
|
total_lines.extend("\n")
|
|
|
|
if total_lines:
|
|
state_machine.insert_input(total_lines, source=source_file_name)
|
|
|
|
return errors
|