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import re
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from sphinx import addnodes
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from sphinx.domains.std import StandardDomain
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from sphinx.roles import XRefRole
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name_re = re.compile(r"[\w_]+")
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def parse_magic(env, sig, signode):
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m = name_re.match(sig)
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if not m:
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raise Exception("Invalid magic command: %s" % sig)
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name = "%" + sig
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signode += addnodes.desc_name(name, name)
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return m.group(0)
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class LineMagicRole(XRefRole):
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"""Cross reference role displayed with a % prefix"""
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prefix = "%"
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def process_link(self, env, refnode, has_explicit_title, title, target):
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if not has_explicit_title:
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title = self.prefix + title.lstrip("%")
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target = target.lstrip("%")
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return title, target
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def parse_cell_magic(env, sig, signode):
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m = name_re.match(sig)
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if not m:
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raise ValueError("Invalid cell magic: %s" % sig)
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name = "%%" + sig
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signode += addnodes.desc_name(name, name)
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return m.group(0)
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class CellMagicRole(LineMagicRole):
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"""Cross reference role displayed with a %% prefix"""
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prefix = "%%"
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def setup(app):
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app.add_object_type('magic', 'magic', 'pair: %s; magic command', parse_magic)
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StandardDomain.roles['magic'] = LineMagicRole()
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app.add_object_type('cellmagic', 'cellmagic', 'pair: %s; cell magic', parse_cell_magic)
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StandardDomain.roles['cellmagic'] = CellMagicRole()
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metadata = {'parallel_read_safe': True, 'parallel_write_safe': True}
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return metadata
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