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from enum import Enum
# Used for the --wrap-mode command-line argument
#
# Special wrap modes:
# nofallback: Don't download wraps for dependency() fallbacks
# nodownload: Don't download wraps for all subproject() calls
#
# subprojects are used for two purposes:
# 1. To download and build dependencies by using .wrap
# files if they are not provided by the system. This is
# usually expressed via dependency(..., fallback: ...).
# 2. To download and build 'copylibs' which are meant to be
# used by copying into your project. This is always done
# with an explicit subproject() call.
#
# --wrap-mode=nofallback will never do (1)
# --wrap-mode=nodownload will do neither (1) nor (2)
#
# If you are building from a release tarball, you should be
# able to safely use 'nodownload' since upstream is
# expected to ship all required sources with the tarball.
#
# If you are building from a git repository, you will want
# to use 'nofallback' so that any 'copylib' wraps will be
# download as subprojects.
#
# --wrap-mode=forcefallback will ignore external dependencies,
# even if they match the version requirements, and automatically
# use the fallback if one was provided. This is useful for example
# to make sure a project builds when using the fallbacks.
#
# Note that these options do not affect subprojects that
# are git submodules since those are only usable in git
# repositories, and you almost always want to download them.
# This did _not_ work when inside the WrapMode class.
# I don't know why. If you can fix this, patches welcome.
string_to_value = {'default': 1,
'nofallback': 2,
'nodownload': 3,
'forcefallback': 4,
'nopromote': 5,
}
class WrapMode(Enum):
default = 1
nofallback = 2
nodownload = 3
forcefallback = 4
nopromote = 5
def __str__(self) -> str:
return self.name
@staticmethod
def from_string(mode_name: str) -> 'WrapMode':
g = string_to_value[mode_name]
return WrapMode(g)
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