68 lines
2.3 KiB
Python
68 lines
2.3 KiB
Python
from __future__ import absolute_import, unicode_literals
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import os
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import sys
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from abc import ABCMeta, abstractmethod
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from six import add_metaclass
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from virtualenv.util.six import ensure_text
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from .activator import Activator
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if sys.version_info >= (3, 7):
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from importlib.resources import read_binary
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else:
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from importlib_resources import read_binary
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@add_metaclass(ABCMeta)
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class ViaTemplateActivator(Activator):
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@abstractmethod
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def templates(self):
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raise NotImplementedError
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def generate(self, creator):
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dest_folder = creator.bin_dir
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replacements = self.replacements(creator, dest_folder)
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generated = self._generate(replacements, self.templates(), dest_folder, creator)
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if self.flag_prompt is not None:
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creator.pyenv_cfg["prompt"] = self.flag_prompt
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return generated
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def replacements(self, creator, dest_folder):
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return {
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"__VIRTUAL_PROMPT__": "" if self.flag_prompt is None else self.flag_prompt,
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"__VIRTUAL_ENV__": ensure_text(str(creator.dest)),
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"__VIRTUAL_NAME__": creator.env_name,
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"__BIN_NAME__": ensure_text(str(creator.bin_dir.relative_to(creator.dest))),
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"__PATH_SEP__": ensure_text(os.pathsep),
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}
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def _generate(self, replacements, templates, to_folder, creator):
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generated = []
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for template in templates:
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text = self.instantiate_template(replacements, template, creator)
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dest = to_folder / self.as_name(template)
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# use write_bytes to avoid platform specific line normalization (\n -> \r\n)
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dest.write_bytes(text.encode("utf-8"))
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generated.append(dest)
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return generated
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def as_name(self, template):
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return template.name
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def instantiate_template(self, replacements, template, creator):
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# read content as binary to avoid platform specific line normalization (\n -> \r\n)
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binary = read_binary(self.__module__, str(template))
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text = binary.decode("utf-8", errors="strict")
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for key, value in replacements.items():
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value = self._repr_unicode(creator, value)
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text = text.replace(key, value)
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return text
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@staticmethod
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def _repr_unicode(creator, value):
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# by default we just let it be unicode
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return value
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