mirror of https://github.com/explosion/spaCy.git
78 lines
3.1 KiB
Python
78 lines
3.1 KiB
Python
# coding: utf8
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from __future__ import unicode_literals
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import plac
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from pathlib import Path
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from wasabi import msg
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from ..compat import symlink_to, path2str
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from .. import util
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@plac.annotations(
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origin=("package name or local path to model", "positional", None, str),
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link_name=("name of shortuct link to create", "positional", None, str),
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force=("force overwriting of existing link", "flag", "f", bool),
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)
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def link(origin, link_name, force=False, model_path=None):
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"""
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Create a symlink for models within the spacy/data directory. Accepts
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either the name of a pip package, or the local path to the model data
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directory. Linking models allows loading them via spacy.load(link_name).
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"""
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if util.is_package(origin):
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model_path = util.get_package_path(origin)
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else:
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model_path = Path(origin) if model_path is None else Path(model_path)
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if not model_path.exists():
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msg.fail(
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"Can't locate model data",
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"The data should be located in {}".format(path2str(model_path)),
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exits=1,
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)
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data_path = util.get_data_path()
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if not data_path or not data_path.exists():
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spacy_loc = Path(__file__).parent.parent
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msg.fail(
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"Can't find the spaCy data path to create model symlink",
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"Make sure a directory `/data` exists within your spaCy "
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"installation and try again. The data directory should be located "
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"here:".format(path=spacy_loc),
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exits=1,
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)
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link_path = util.get_data_path() / link_name
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if link_path.is_symlink() and not force:
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msg.fail(
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"Link '{}' already exists".format(link_name),
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"To overwrite an existing link, use the --force flag",
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exits=1,
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)
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elif link_path.is_symlink(): # does a symlink exist?
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# NB: It's important to check for is_symlink here and not for exists,
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# because invalid/outdated symlinks would return False otherwise.
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link_path.unlink()
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elif link_path.exists(): # does it exist otherwise?
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# NB: Check this last because valid symlinks also "exist".
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msg.fail(
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"Can't overwrite symlink '{}'".format(link_name),
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"This can happen if your data directory contains a directory or "
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"file of the same name.",
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exits=1,
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)
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details = "%s --> %s" % (path2str(model_path), path2str(link_path))
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try:
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symlink_to(link_path, model_path)
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except: # noqa: E722
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# This is quite dirty, but just making sure other errors are caught.
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msg.fail(
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"Couldn't link model to '{}'".format(link_name),
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"Creating a symlink in spacy/data failed. Make sure you have the "
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"required permissions and try re-running the command as admin, or "
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"use a virtualenv. You can still import the model as a module and "
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"call its load() method, or create the symlink manually.",
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)
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msg.text(details)
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raise
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msg.good("Linking successful", details)
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msg.text("You can now load the model via spacy.load('{}')".format(link_name))
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