This commit adds a new plugin for creating recipes for crates (rust based
applications).
TODO: add more description here on final version of the patch
Signed-off-by: Julien Stephan <jstep...@baylibre.com>
---
scripts/lib/recipetool/create_cargo.py | 125 +++++++++++++++++++++++++
1 file changed, 125 insertions(+)
create mode 100644 scripts/lib/recipetool/create_cargo.py
diff --git a/scripts/lib/recipetool/create_cargo.py
b/scripts/lib/recipetool/create_cargo.py
new file mode 100644
index 00000000000..d24ce63509c
--- /dev/null
+++ b/scripts/lib/recipetool/create_cargo.py
@@ -0,0 +1,125 @@
+# Recipe creation tool - cargo support plugin
+#
+# Copyright (c) 2023 BayLibre, SAS
+# Author: Julien Stephan <jstep...@baylibre.com>
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
+
+import logging
+import os
+from recipetool.create import RecipeHandler
+
+logger = logging.getLogger("recipetool")
+
+tinfoil = None
+
+
+def tinfoil_init(instance):
+ global tinfoil
+ tinfoil = instance
+
+
+class CargoRecipeHandler(RecipeHandler):
+ """
+ Base class to support rust crate
+ """
+
+ # The supported metadata list
+ # Exaustive list available here:
https://doc.rust-lang.org/cargo/reference/manifest.html#the-manifest-format
+ manifest_package_table = [
+ "name",
+ "version",
+ "homepage",
+ "description",
+ "license",
+ "license-file",
+ "dependencies",
+ ]
+
+ bbvar_map = {
+ "name": "PN",
+ "version": "PV",
+ "homepage": "HOMEPAGE",
+ "description": "SUMMARY",
+ "license": "LICENSE",
+ }
+
+ def __init__(self):
+ pass
+
+ def process(
+ self, srctree, classes, lines_before, lines_after, handled, extravalues
+ ):
+ if "buildsystem" in handled:
+ return False
+
+ # Check for non-zero size Cargo.toml file
+ manifestfiles = RecipeHandler.checkfiles(srctree, ["Cargo.toml"])
+ for fn in manifestfiles:
+ if os.path.getsize(fn):
+ break
+ else:
+ return False
+
+ manifest = os.path.join(srctree, "Cargo.toml")
+
+ lockfile = RecipeHandler.checkfiles(srctree, ["Cargo.lock"])
+ if lockfile == []:
+ logger.error(
+ "No cargo lock found, this is not yet supported, falling back
to another method"
+ )
+ return False
+
+ try:
+ import tomllib
+ except ImportError:
+ try:
+ import tomli as tomllib
+ except ImportError:
+ logger.exception(
+ "Neither 'tomllib' nor 'tomli' could be imported. Please
use python3.11 or above or install tomli module"
+ )
+ return False
+ except Exception:
+ logger.exception("Failed to parse pyproject.toml")
+ return False
+
+ try:
+ with open(manifest, "rb") as f:
+ config = tomllib.load(f)
+
+ metadata = config["package"]
+
+ if metadata:
+ for field, value in metadata.items():
+ if field in self.manifest_package_table:
+ if field == "license":
+ # license field is an SPDX 2.1 license expression
+ #
https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields
+ value = value.replace("AND", "&")
+ value = value.replace("OR", "|")
+ # even if deprecated we can still find some old
crate using "/" to separate mulitple licenses
+ value = value.replace("/", " & ")
+ elif field == "license-file":
+ # TODO: handle this properly
+ continue
+
+ extravalues[self.bbvar_map[field]] = value
+
+ if "dependencies" in extravalues:
+ lines_after.append("include ${BPN}-crates.inc")
+ extravalues.pop("dependencies")
+ classes.append("cargo")
+ classes.append("cargo-update-recipe-crates")
+ handled.append("buildsystem")
+ except Exception:
+ logger.exception(
+ "Failed to correctly handle Cargo.toml, falling back to
another method"
+ )
+ return False
+
+
+def register_recipe_handlers(handlers):
+ # We need to make sure these are ahead of the makefile fallback handler
+ handlers.append((CargoRecipeHandler(), 80))
--
2.42.0
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