mirror of
https://github.com/rembo10/headphones.git
synced 2026-07-22 08:53:59 +01:00
Upgraded beets to 1.3.10, including patches
This commit is contained in:
Bas Stottelaar
+476
-95
@@ -21,6 +21,8 @@ import pkgutil
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import sys
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import yaml
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import types
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import collections
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import re
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try:
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from collections import OrderedDict
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except ImportError:
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@@ -47,6 +49,7 @@ BASESTRING = str if PY3 else basestring
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NUMERIC_TYPES = (int, float) if PY3 else (int, float, long)
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TYPE_TYPES = (type,) if PY3 else (type, types.ClassType)
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def iter_first(sequence):
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"""Get the first element from an iterable or raise a ValueError if
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the iterator generates no values.
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@@ -67,16 +70,25 @@ class ConfigError(Exception):
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"""Base class for exceptions raised when querying a configuration.
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"""
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class NotFoundError(ConfigError):
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"""A requested value could not be found in the configuration trees.
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"""
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class ConfigTypeError(ConfigError, TypeError):
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class ConfigValueError(ConfigError):
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"""The value in the configuration is illegal."""
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class ConfigTypeError(ConfigValueError):
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"""The value in the configuration did not match the expected type.
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"""
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class ConfigValueError(ConfigError, ValueError):
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"""The value in the configuration is illegal."""
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class ConfigTemplateError(ConfigError):
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"""Base class for exceptions raised because of an invalid template.
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"""
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class ConfigReadError(ConfigError):
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"""A configuration file could not be read."""
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@@ -132,6 +144,7 @@ class ConfigSource(dict):
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else:
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raise TypeError('source value must be a dict')
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class ConfigView(object):
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"""A configuration "view" is a query into a program's configuration
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data. A view represents a hypothetical location in the configuration
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@@ -207,6 +220,9 @@ class ConfigView(object):
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"""
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self.set({key: value})
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def __contains__(self, key):
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return self[key].exists()
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def set_args(self, namespace):
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"""Overlay parsed command-line arguments, generated by a library
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like argparse or optparse, onto this view's value.
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@@ -310,98 +326,6 @@ class ConfigView(object):
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# Validation and conversion.
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def get(self, typ=None):
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"""Returns the canonical value for the view, checked against the
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passed-in type. If the value is not an instance of the given
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type, a ConfigTypeError is raised. May also raise a
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NotFoundError.
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"""
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value, _ = self.first()
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if typ is not None:
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if not isinstance(typ, TYPE_TYPES):
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raise TypeError('argument to get() must be a type')
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if not isinstance(value, typ):
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raise ConfigTypeError(
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"{0} must be of type {1}, not {2}".format(
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self.name, typ.__name__, type(value).__name__
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)
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)
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return value
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def as_filename(self):
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"""Get a string as a normalized as an absolute, tilde-free path.
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Relative paths are relative to the configuration directory (see
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the `config_dir` method) if they come from a file. Otherwise,
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they are relative to the current working directory. This helps
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attain the expected behavior when using command-line options.
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"""
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path, source = self.first()
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if not isinstance(path, BASESTRING):
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raise ConfigTypeError('{0} must be a filename, not {1}'.format(
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self.name, type(path).__name__
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))
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path = os.path.expanduser(STRING(path))
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if not os.path.isabs(path) and source.filename:
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# From defaults: relative to the app's directory.
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path = os.path.join(self.root().config_dir(), path)
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return os.path.abspath(path)
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def as_choice(self, choices):
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"""Ensure that the value is among a collection of choices and
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return it. If `choices` is a dictionary, then return the
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corresponding value rather than the value itself (the key).
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"""
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value = self.get()
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if value not in choices:
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raise ConfigValueError(
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'{0} must be one of {1}, not {2}'.format(
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self.name, repr(list(choices)), repr(value)
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)
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)
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if isinstance(choices, dict):
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return choices[value]
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else:
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return value
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def as_number(self):
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"""Ensure that a value is of numeric type."""
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value = self.get()
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if isinstance(value, NUMERIC_TYPES):
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return value
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raise ConfigTypeError(
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'{0} must be numeric, not {1}'.format(
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self.name, type(value).__name__
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)
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)
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def as_str_seq(self):
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"""Get the value as a list of strings. The underlying configured
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value can be a sequence or a single string. In the latter case,
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the string is treated as a white-space separated list of words.
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"""
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value = self.get()
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if isinstance(value, bytes):
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value = value.decode('utf8', 'ignore')
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if isinstance(value, STRING):
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return value.split()
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else:
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try:
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return list(value)
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except TypeError:
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raise ConfigTypeError(
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'{0} must be a whitespace-separated string or '
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'a list'.format(self.name)
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)
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def flatten(self):
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"""Create a hierarchy of OrderedDicts containing the data from
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this view, recursively reifying all views to get their
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@@ -415,6 +339,35 @@ class ConfigView(object):
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od[key] = view.get()
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return od
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def get(self, template=None):
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"""Retrieve the value for this view according to the template.
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The `template` against which the values are checked can be
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anything convertible to a `Template` using `as_template`. This
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means you can pass in a default integer or string value, for
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example, or a type to just check that something matches the type
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you expect.
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May raise a `ConfigValueError` (or its subclass,
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`ConfigTypeError`) or a `NotFoundError` when the configuration
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doesn't satisfy the template.
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"""
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return as_template(template).value(self, template)
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# Old validation methods (deprecated).
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def as_filename(self):
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return self.get(Filename())
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def as_choice(self, choices):
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return self.get(Choice(choices))
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def as_number(self):
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return self.get(Number())
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def as_str_seq(self):
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return self.get(StrSeq())
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class RootView(ConfigView):
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"""The base of a view hierarchy. This view keeps track of the
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@@ -518,6 +471,7 @@ def _package_path(name):
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return os.path.dirname(os.path.abspath(filepath))
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def config_dirs():
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"""Return a platform-specific list of candidates for user
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configuration directories on the system.
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@@ -606,10 +560,12 @@ class Loader(yaml.SafeLoader):
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plain = super(Loader, self).check_plain()
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return plain or self.peek() == '%'
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Loader.add_constructor('tag:yaml.org,2002:str', Loader._construct_unicode)
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Loader.add_constructor('tag:yaml.org,2002:map', Loader.construct_yaml_map)
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Loader.add_constructor('tag:yaml.org,2002:omap', Loader.construct_yaml_map)
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def load_yaml(filename):
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"""Read a YAML document from a file. If the file cannot be read or
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parsed, a ConfigReadError is raised.
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@@ -679,11 +635,13 @@ class Dumper(yaml.SafeDumper):
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"""
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return self.represent_scalar('tag:yaml.org,2002:null', '')
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Dumper.add_representer(OrderedDict, Dumper.represent_dict)
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Dumper.add_representer(bool, Dumper.represent_bool)
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Dumper.add_representer(type(None), Dumper.represent_none)
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Dumper.add_representer(list, Dumper.represent_list)
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def restore_yaml_comments(data, default_data):
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"""Scan default_data for comments (we include empty lines in our
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definition of comments) and place them before the same keys in data.
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@@ -898,3 +856,426 @@ class LazyConfig(Configuration):
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del self.sources[:]
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self._lazy_suffix = []
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self._lazy_prefix = []
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# "Validated" configuration views: experimental!
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REQUIRED = object()
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"""A sentinel indicating that there is no default value and an exception
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should be raised when the value is missing.
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"""
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class Template(object):
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"""A value template for configuration fields.
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The template works like a type and instructs Confit about how to
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interpret a deserialized YAML value. This includes type conversions,
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providing a default value, and validating for errors. For example, a
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filepath type might expand tildes and check that the file exists.
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"""
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def __init__(self, default=REQUIRED):
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"""Create a template with a given default value.
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If `default` is the sentinel `REQUIRED` (as it is by default),
|
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then an error will be raised when a value is missing. Otherwise,
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missing values will instead return `default`.
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"""
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self.default = default
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def __call__(self, view):
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"""Invoking a template on a view gets the view's value according
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to the template.
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"""
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return self.value(view, self)
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def value(self, view, template=None):
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"""Get the value for a `ConfigView`.
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May raise a `NotFoundError` if the value is missing (and the
|
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template requires it) or a `ConfigValueError` for invalid values.
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"""
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if view.exists():
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value, _ = view.first()
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return self.convert(value, view)
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elif self.default is REQUIRED:
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# Missing required value. This is an error.
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raise NotFoundError("{0} not found".format(view.name))
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else:
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# Missing value, but not required.
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return self.default
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def convert(self, value, view):
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"""Convert the YAML-deserialized value to a value of the desired
|
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type.
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Subclasses should override this to provide useful conversions.
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May raise a `ConfigValueError` when the configuration is wrong.
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"""
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# Default implementation does no conversion.
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return value
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def fail(self, message, view, type_error=False):
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"""Raise an exception indicating that a value cannot be
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accepted.
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|
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`type_error` indicates whether the error is due to a type
|
||||
mismatch rather than a malformed value. In this case, a more
|
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specific exception is raised.
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"""
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exc_class = ConfigTypeError if type_error else ConfigValueError
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raise exc_class(
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'{0}: {1}'.format(view.name, message)
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)
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def __repr__(self):
|
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return '{0}({1})'.format(
|
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type(self).__name__,
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'' if self.default is REQUIRED else repr(self.default),
|
||||
)
|
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|
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|
||||
class Integer(Template):
|
||||
"""An integer configuration value template.
|
||||
"""
|
||||
def convert(self, value, view):
|
||||
"""Check that the value is an integer. Floats are rounded.
|
||||
"""
|
||||
if isinstance(value, int):
|
||||
return value
|
||||
elif isinstance(value, float):
|
||||
return int(value)
|
||||
else:
|
||||
self.fail('must be a number', view, True)
|
||||
|
||||
|
||||
class Number(Template):
|
||||
"""A numeric type: either an integer or a floating-point number.
|
||||
"""
|
||||
def convert(self, value, view):
|
||||
"""Check that the value is an int or a float.
|
||||
"""
|
||||
if isinstance(value, NUMERIC_TYPES):
|
||||
return value
|
||||
else:
|
||||
self.fail(
|
||||
'must be numeric, not {0}'.format(type(value).__name__),
|
||||
view,
|
||||
True
|
||||
)
|
||||
|
||||
|
||||
class MappingTemplate(Template):
|
||||
"""A template that uses a dictionary to specify other types for the
|
||||
values for a set of keys and produce a validated `AttrDict`.
|
||||
"""
|
||||
def __init__(self, mapping):
|
||||
"""Create a template according to a dict (mapping). The
|
||||
mapping's values should themselves either be Types or
|
||||
convertible to Types.
|
||||
"""
|
||||
subtemplates = {}
|
||||
for key, typ in mapping.items():
|
||||
subtemplates[key] = as_template(typ)
|
||||
self.subtemplates = subtemplates
|
||||
|
||||
def value(self, view, template=None):
|
||||
"""Get a dict with the same keys as the template and values
|
||||
validated according to the value types.
|
||||
"""
|
||||
out = AttrDict()
|
||||
for key, typ in self.subtemplates.items():
|
||||
out[key] = typ.value(view[key], self)
|
||||
return out
|
||||
|
||||
def __repr__(self):
|
||||
return 'MappingTemplate({0})'.format(repr(self.subtemplates))
|
||||
|
||||
|
||||
class String(Template):
|
||||
"""A string configuration value template.
|
||||
"""
|
||||
def __init__(self, default=REQUIRED, pattern=None):
|
||||
"""Create a template with the added optional `pattern` argument,
|
||||
a regular expression string that the value should match.
|
||||
"""
|
||||
super(String, self).__init__(default)
|
||||
self.pattern = pattern
|
||||
if pattern:
|
||||
self.regex = re.compile(pattern)
|
||||
|
||||
def convert(self, value, view):
|
||||
"""Check that the value is a string and matches the pattern.
|
||||
"""
|
||||
if isinstance(value, BASESTRING):
|
||||
if self.pattern and not self.regex.match(value):
|
||||
self.fail(
|
||||
"must match the pattern {0}".format(self.pattern),
|
||||
view
|
||||
)
|
||||
return value
|
||||
else:
|
||||
self.fail('must be a string', view, True)
|
||||
|
||||
|
||||
class Choice(Template):
|
||||
"""A template that permits values from a sequence of choices.
|
||||
"""
|
||||
def __init__(self, choices):
|
||||
"""Create a template that validates any of the values from the
|
||||
iterable `choices`.
|
||||
|
||||
If `choices` is a map, then the corresponding value is emitted.
|
||||
Otherwise, the value itself is emitted.
|
||||
"""
|
||||
self.choices = choices
|
||||
|
||||
def convert(self, value, view):
|
||||
"""Ensure that the value is among the choices (and remap if the
|
||||
choices are a mapping).
|
||||
"""
|
||||
if value not in self.choices:
|
||||
self.fail(
|
||||
'must be one of {0}, not {1}'.format(
|
||||
repr(list(self.choices)), repr(value)
|
||||
),
|
||||
view
|
||||
)
|
||||
|
||||
if isinstance(self.choices, collections.Mapping):
|
||||
return self.choices[value]
|
||||
else:
|
||||
return value
|
||||
|
||||
def __repr__(self):
|
||||
return 'Choice({0!r})'.format(self.choices)
|
||||
|
||||
|
||||
class StrSeq(Template):
|
||||
"""A template for values that are lists of strings.
|
||||
|
||||
Validates both actual YAML string lists and single strings. Strings
|
||||
can optionally be split on whitespace.
|
||||
"""
|
||||
def __init__(self, split=True):
|
||||
"""Create a new template.
|
||||
|
||||
`split` indicates whether, when the underlying value is a single
|
||||
string, it should be split on whitespace. Otherwise, the
|
||||
resulting value is a list containing a single string.
|
||||
"""
|
||||
super(StrSeq, self).__init__()
|
||||
self.split = split
|
||||
|
||||
def convert(self, value, view):
|
||||
if isinstance(value, bytes):
|
||||
value = value.decode('utf8', 'ignore')
|
||||
|
||||
if isinstance(value, STRING):
|
||||
if self.split:
|
||||
return value.split()
|
||||
else:
|
||||
return [value]
|
||||
|
||||
try:
|
||||
value = list(value)
|
||||
except TypeError:
|
||||
self.fail('must be a whitespace-separated string or a list',
|
||||
view, True)
|
||||
|
||||
def convert(x):
|
||||
if isinstance(x, unicode):
|
||||
return x
|
||||
elif isinstance(x, BASESTRING):
|
||||
return x.decode('utf8', 'ignore')
|
||||
else:
|
||||
self.fail('must be a list of strings', view, True)
|
||||
return map(convert, value)
|
||||
|
||||
|
||||
class Filename(Template):
|
||||
"""A template that validates strings as filenames.
|
||||
|
||||
Filenames are returned as absolute, tilde-free paths.
|
||||
|
||||
Relative paths are relative to the template's `cwd` argument
|
||||
when it is specified, then the configuration directory (see
|
||||
the `config_dir` method) if they come from a file. Otherwise,
|
||||
they are relative to the current working directory. This helps
|
||||
attain the expected behavior when using command-line options.
|
||||
"""
|
||||
def __init__(self, default=REQUIRED, cwd=None, relative_to=None,
|
||||
in_app_dir=False):
|
||||
""" `relative_to` is the name of a sibling value that is
|
||||
being validated at the same time.
|
||||
|
||||
`in_app_dir` indicates whether the path should be resolved
|
||||
inside the application's config directory (even when the setting
|
||||
does not come from a file).
|
||||
"""
|
||||
super(Filename, self).__init__(default)
|
||||
self.cwd = cwd
|
||||
self.relative_to = relative_to
|
||||
self.in_app_dir = in_app_dir
|
||||
|
||||
def __repr__(self):
|
||||
args = []
|
||||
|
||||
if self.default is not REQUIRED:
|
||||
args.append(repr(self.default))
|
||||
|
||||
if self.cwd is not None:
|
||||
args.append('cwd=' + repr(self.cwd))
|
||||
|
||||
if self.relative_to is not None:
|
||||
args.append('relative_to=' + repr(self.relative_to))
|
||||
|
||||
if self.in_app_dir:
|
||||
args.append('in_app_dir=True')
|
||||
|
||||
return 'Filename({0})'.format(', '.join(args))
|
||||
|
||||
def resolve_relative_to(self, view, template):
|
||||
if not isinstance(template, (collections.Mapping, MappingTemplate)):
|
||||
# disallow config.get(Filename(relative_to='foo'))
|
||||
raise ConfigTemplateError(
|
||||
'relative_to may only be used when getting multiple values.'
|
||||
)
|
||||
|
||||
elif self.relative_to == view.key:
|
||||
raise ConfigTemplateError(
|
||||
'{0} is relative to itself'.format(view.name)
|
||||
)
|
||||
|
||||
elif self.relative_to not in view.parent.keys():
|
||||
# self.relative_to is not in the config
|
||||
self.fail(
|
||||
(
|
||||
'needs sibling value "{0}" to expand relative path'
|
||||
).format(self.relative_to),
|
||||
view
|
||||
)
|
||||
|
||||
old_template = {}
|
||||
old_template.update(template.subtemplates)
|
||||
|
||||
# save time by skipping MappingTemplate's init loop
|
||||
next_template = MappingTemplate({})
|
||||
next_relative = self.relative_to
|
||||
|
||||
# gather all the needed templates and nothing else
|
||||
while next_relative is not None:
|
||||
try:
|
||||
# pop to avoid infinite loop because of recursive
|
||||
# relative paths
|
||||
rel_to_template = old_template.pop(next_relative)
|
||||
except KeyError:
|
||||
if next_relative in template.subtemplates:
|
||||
# we encountered this config key previously
|
||||
raise ConfigTemplateError((
|
||||
'{0} and {1} are recursively relative'
|
||||
).format(view.name, self.relative_to))
|
||||
else:
|
||||
raise ConfigTemplateError((
|
||||
'missing template for {0}, needed to expand {1}\'s' +
|
||||
'relative path'
|
||||
).format(self.relative_to, view.name))
|
||||
|
||||
next_template.subtemplates[next_relative] = rel_to_template
|
||||
next_relative = rel_to_template.relative_to
|
||||
|
||||
return view.parent.get(next_template)[self.relative_to]
|
||||
|
||||
def value(self, view, template=None):
|
||||
path, source = view.first()
|
||||
if not isinstance(path, BASESTRING):
|
||||
self.fail(
|
||||
'must be a filename, not {0}'.format(type(path).__name__),
|
||||
view,
|
||||
True
|
||||
)
|
||||
path = os.path.expanduser(STRING(path))
|
||||
|
||||
if not os.path.isabs(path):
|
||||
if self.cwd is not None:
|
||||
# relative to the template's argument
|
||||
path = os.path.join(self.cwd, path)
|
||||
|
||||
elif self.relative_to is not None:
|
||||
path = os.path.join(
|
||||
self.resolve_relative_to(view, template),
|
||||
path,
|
||||
)
|
||||
|
||||
elif source.filename or self.in_app_dir:
|
||||
# From defaults: relative to the app's directory.
|
||||
path = os.path.join(view.root().config_dir(), path)
|
||||
|
||||
return os.path.abspath(path)
|
||||
|
||||
|
||||
class TypeTemplate(Template):
|
||||
"""A simple template that checks that a value is an instance of a
|
||||
desired Python type.
|
||||
"""
|
||||
def __init__(self, typ, default=REQUIRED):
|
||||
"""Create a template that checks that the value is an instance
|
||||
of `typ`.
|
||||
"""
|
||||
super(TypeTemplate, self).__init__(default)
|
||||
self.typ = typ
|
||||
|
||||
def convert(self, value, view):
|
||||
if not isinstance(value, self.typ):
|
||||
self.fail(
|
||||
'must be a {0}, not {1}'.format(
|
||||
self.typ.__name__,
|
||||
type(value).__name__,
|
||||
),
|
||||
view,
|
||||
True
|
||||
)
|
||||
return value
|
||||
|
||||
|
||||
class AttrDict(dict):
|
||||
"""A `dict` subclass that can be accessed via attributes (dot
|
||||
notation) for convenience.
|
||||
"""
|
||||
def __getattr__(self, key):
|
||||
if key in self:
|
||||
return self[key]
|
||||
else:
|
||||
raise AttributeError(key)
|
||||
|
||||
|
||||
def as_template(value):
|
||||
"""Convert a simple "shorthand" Python value to a `Template`.
|
||||
"""
|
||||
if isinstance(value, Template):
|
||||
# If it's already a Template, pass it through.
|
||||
return value
|
||||
elif isinstance(value, collections.Mapping):
|
||||
# Dictionaries work as templates.
|
||||
return MappingTemplate(value)
|
||||
elif value is int:
|
||||
return Integer()
|
||||
elif isinstance(value, int):
|
||||
return Integer(value)
|
||||
elif isinstance(value, type) and issubclass(value, BASESTRING):
|
||||
return String()
|
||||
elif isinstance(value, BASESTRING):
|
||||
return String(value)
|
||||
elif value is float:
|
||||
return Number()
|
||||
elif value is None:
|
||||
return Template()
|
||||
elif value is dict:
|
||||
return TypeTemplate(collections.Mapping)
|
||||
elif value is list:
|
||||
return TypeTemplate(collections.Sequence)
|
||||
elif isinstance(value, type):
|
||||
return TypeTemplate(value)
|
||||
else:
|
||||
raise ValueError('cannot convert to template: {0!r}'.format(value))
|
||||
|
||||
Reference in New Issue
Block a user