1 files changed, 122 insertions, 0 deletions
diff --git a/PC/layout/support/options.py b/PC/layout/support/options.py
new file mode 100644
index 0000000..76d9e34
--- /dev/null
+++ b/PC/layout/support/options.py
@@ -0,0 +1,122 @@
+"""
+List of optional components.
+"""
+
+__author__ = "Steve Dower <steve.dower@python.org>"
+__version__ = "3.8"
+
+
+__all__ = []
+
+
+def public(f):
+    __all__.append(f.__name__)
+    return f
+
+
+OPTIONS = {
+    "stable": {"help": "stable ABI stub"},
+    "pip": {"help": "pip"},
+    "distutils": {"help": "distutils"},
+    "tcltk": {"help": "Tcl, Tk and tkinter"},
+    "idle": {"help": "Idle"},
+    "tests": {"help": "test suite"},
+    "tools": {"help": "tools"},
+    "venv": {"help": "venv"},
+    "dev": {"help": "headers and libs"},
+    "symbols": {"help": "symbols"},
+    "bdist-wininst": {"help": "bdist_wininst support"},
+    "underpth": {"help": "a python._pth file", "not-in-all": True},
+    "launchers": {"help": "specific launchers"},
+    "appxmanifest": {"help": "an appxmanifest"},
+    "props": {"help": "a python.props file"},
+    "chm": {"help": "the CHM documentation"},
+    "html-doc": {"help": "the HTML documentation"},
+}
+
+
+PRESETS = {
+    "appx": {
+        "help": "APPX package",
+        "options": [
+            "stable",
+            "pip",
+            "distutils",
+            "tcltk",
+            "idle",
+            "venv",
+            "dev",
+            "launchers",
+            "appxmanifest",
+            # XXX: Disabled for now "precompile",
+        ],
+    },
+    "nuget": {
+        "help": "nuget package",
+        "options": ["stable", "pip", "distutils", "dev", "props"],
+    },
+    "default": {
+        "help": "development kit package",
+        "options": [
+            "stable",
+            "pip",
+            "distutils",
+            "tcltk",
+            "idle",
+            "tests",
+            "tools",
+            "venv",
+            "dev",
+            "symbols",
+            "bdist-wininst",
+            "chm",
+        ],
+    },
+    "embed": {
+        "help": "embeddable package",
+        "options": ["stable", "zip-lib", "flat-dlls", "underpth", "precompile"],
+    },
+}
+
+
+@public
+def get_argparse_options():
+    for opt, info in OPTIONS.items():
+        help = "When specified, includes {}".format(info["help"])
+        if info.get("not-in-all"):
+            help = "{}. Not affected by --include-all".format(help)
+
+        yield "--include-{}".format(opt), help
+
+    for opt, info in PRESETS.items():
+        help = "When specified, includes default options for {}".format(info["help"])
+        yield "--preset-{}".format(opt), help
+
+
+def ns_get(ns, key, default=False):
+    return getattr(ns, key.replace("-", "_"), default)
+
+
+def ns_set(ns, key, value=True):
+    k1 = key.replace("-", "_")
+    k2 = "include_{}".format(k1)
+    if hasattr(ns, k2):
+        setattr(ns, k2, value)
+    elif hasattr(ns, k1):
+        setattr(ns, k1, value)
+    else:
+        raise AttributeError("no argument named '{}'".format(k1))
+
+
+@public
+def update_presets(ns):
+    for preset, info in PRESETS.items():
+        if ns_get(ns, "preset-{}".format(preset)):
+            for opt in info["options"]:
+                ns_set(ns, opt)
+
+    if ns.include_all:
+        for opt in OPTIONS:
+            if OPTIONS[opt].get("not-in-all"):
+                continue
+            ns_set(ns, opt)