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"""
:copyright: 2010-2015 by Ronny Pfannschmidt
:license: MIT
"""
import os
import warnings
from .config import Configuration
from .utils import function_has_arg, string_types
from .version import format_version, meta
from .discover import iter_matching_entrypoints
PRETEND_KEY = "SETUPTOOLS_SCM_PRETEND_VERSION"
TEMPLATES = {
".py": """\
# coding: utf-8
# file generated by setuptools_scm
# don't change, don't track in version control
version = {version!r}
""",
".txt": "{version}",
}
def version_from_scm(root):
warnings.warn(
"version_from_scm is deprecated please use get_version",
category=DeprecationWarning,
)
config = Configuration()
config.root = root
# TODO: Is it API?
return _version_from_entrypoint(config, "setuptools_scm.parse_scm")
def _call_entrypoint_fn(config, fn):
if function_has_arg(fn, "config"):
return fn(config.absolute_root, config=config)
else:
warnings.warn(
"parse functions are required to provide a named argument"
" 'config' in the future.",
category=PendingDeprecationWarning,
stacklevel=2,
)
return fn(config.absolute_root)
def _version_from_entrypoint(config, entrypoint):
for ep in iter_matching_entrypoints(config.absolute_root, entrypoint):
version = _call_entrypoint_fn(config, ep.load())
if version:
return version
def dump_version(root, version, write_to, template=None):
assert isinstance(version, string_types)
if not write_to:
return
target = os.path.normpath(os.path.join(root, write_to))
ext = os.path.splitext(target)[1]
template = template or TEMPLATES.get(ext)
if template is None:
raise ValueError(
"bad file format: '{}' (of {}) \nonly *.txt and *.py are supported".format(
os.path.splitext(target)[1], target
)
)
with open(target, "w") as fp:
fp.write(template.format(version=version))
def _do_parse(config):
pretended = os.environ.get(PRETEND_KEY)
if pretended:
# we use meta here since the pretended version
# must adhere to the pep to begin with
return meta(tag=pretended, preformatted=True, config=config)
if config.parse:
parse_result = _call_entrypoint_fn(config, config.parse)
if isinstance(parse_result, string_types):
raise TypeError(
"version parse result was a string\nplease return a parsed version"
)
version = parse_result or _version_from_entrypoint(
config, "setuptools_scm.parse_scm_fallback"
)
else:
# include fallbacks after dropping them from the main entrypoint
version = _version_from_entrypoint(
config, "setuptools_scm.parse_scm"
) or _version_from_entrypoint(
config, "setuptools_scm.parse_scm_fallback"
)
if version:
return version
raise LookupError(
"setuptools-scm was unable to detect version for %r.\n\n"
"Make sure you're either building from a fully intact git repository "
"or PyPI tarballs. Most other sources (such as GitHub's tarballs, a "
"git checkout without the .git folder) don't contain the necessary "
"metadata and will not work.\n\n"
"For example, if you're using pip, instead of "
"https://github.com/user/proj/archive/master.zip "
"use git+https://github.com/user/proj.git#egg=proj" % config.absolute_root
)
def get_version(
root=".",
version_scheme="guess-next-dev",
local_scheme="node-and-date",
write_to=None,
write_to_template=None,
relative_to=None,
tag_regex=None,
parse=None,
git_describe_command=None,
):
"""
If supplied, relative_to should be a file from which root may
be resolved. Typically called by a script or module that is not
in the root of the repository to direct setuptools_scm to the
root of the repository by supplying ``__file__``.
"""
config = Configuration()
config.root = root
config.version_scheme = version_scheme
config.local_scheme = local_scheme
config.write_to = write_to
config.write_to_template = write_to_template
config.relative_to = relative_to
config.tag_regex = tag_regex
config.parse = parse
config.git_describe_command = git_describe_command
parsed_version = _do_parse(config)
if parsed_version:
version_string = format_version(
parsed_version, version_scheme=version_scheme, local_scheme=local_scheme
)
dump_version(
root=root,
version=version_string,
write_to=write_to,
template=write_to_template,
)
return version_string