mirror of
https://github.com/libsdl-org/SDL.git
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50ae47af5e
This script supersedes androidbuild.sh, and also supports using a SDL3 prefab archive
218 lines
7.9 KiB
Python
Executable File
218 lines
7.9 KiB
Python
Executable File
#!/usr/bin/env python
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import os
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from argparse import ArgumentParser
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from pathlib import Path
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import re
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import shutil
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import sys
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import textwrap
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SDL_ROOT = Path(__file__).resolve().parents[1]
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def extract_sdl_version():
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"""
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Extract SDL version from SDL3/SDL_version.h
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"""
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with open(SDL_ROOT / "include/SDL3/SDL_version.h") as f:
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data = f.read()
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major = int(next(re.finditer(r"#define\s+SDL_MAJOR_VERSION\s+([0-9]+)", data)).group(1))
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minor = int(next(re.finditer(r"#define\s+SDL_MINOR_VERSION\s+([0-9]+)", data)).group(1))
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micro = int(next(re.finditer(r"#define\s+SDL_MICRO_VERSION\s+([0-9]+)", data)).group(1))
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return f"{major}.{minor}.{micro}"
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def replace_in_file(path, regex_what, replace_with):
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with open(path, "r") as f:
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data = f.read()
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new_data, count = re.subn(regex_what, replace_with, data)
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assert count > 0, f"\"{regex_what}\" did not match anything in \"{path}\""
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with open(path, "w") as f:
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f.write(new_data)
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def android_mk_use_prefab(path):
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"""
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Replace relative SDL inclusion with dependency on prefab package
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"""
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with open(path) as f:
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data = "".join(line for line in f.readlines() if "# SDL" not in line)
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data, _ = re.subn("[\n]{3,}", "\n\n", data)
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newdata = data + textwrap.dedent("""
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# https://google.github.io/prefab/build-systems.html
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# Add the prefab modules to the import path.
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$(call import-add-path,/out)
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# Import SDL3 so we can depend on it.
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$(call import-module,prefab/SDL3)
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""")
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with open(path, "w") as f:
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f.write(newdata)
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def cmake_mk_no_sdl(path):
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"""
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Don't add the source directories of SDL/SDL_image/SDL_mixer/...
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"""
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with open(path) as f:
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lines = f.readlines()
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newlines = []
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for line in lines:
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if "add_subdirectory(SDL" in line:
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while newlines[-1].startswith("#"):
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newlines = newlines[:-1]
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continue
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newlines.append(line)
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newdata, _ = re.subn("[\n]{3,}", "\n\n", "".join(newlines))
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with open(path, "w") as f:
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f.write(newdata)
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def gradle_add_prefab_and_aar(path, aar):
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with open(path) as f:
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data = f.read()
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data, count = re.subn("android {", textwrap.dedent("""
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android {
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buildFeatures {
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prefab true
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}"""), data)
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assert count == 1
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data, count = re.subn("dependencies {", textwrap.dedent(f"""
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dependencies {{
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implementation files('libs/{aar}')"""), data)
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assert count == 1
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with open(path, "w") as f:
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f.write(data)
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def main():
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description = "Create a simple Android gradle project from input sources."
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epilog = "You need to manually copy a prebuilt SDL3 Android archive into the project tree when using the aar variant."
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parser = ArgumentParser(description=description, allow_abbrev=False)
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parser.add_argument("package_name", metavar="PACKAGENAME", help="Android package name e.g. com.yourcompany.yourapp")
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parser.add_argument("sources", metavar="SOURCE", nargs="*", help="Source code of your application. The files are copied to the output directory.")
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parser.add_argument("--variant", choices=["copy", "symlink", "aar"], default="copy", help="Choose variant of SDL project (copy: copy SDL sources, symlink: symlink SDL sources, aar: use Android aar archive)")
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parser.add_argument("--output", "-o", default=SDL_ROOT / "build", type=Path, help="Location where to store the Android project")
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parser.add_argument("--version", default=None, help="SDL3 version to use as aar dependency (only used for aar variant)")
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args = parser.parse_args()
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if not args.sources:
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print("Reading source file paths from stdin (press CTRL+D to stop)")
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args.sources = [path for path in sys.stdin.read().strip().split() if path]
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if not args.sources:
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parser.error("No sources passed")
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if not os.getenv("ANDROID_HOME"):
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print("WARNING: ANDROID_HOME environment variable not set", file=sys.stderr)
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if not os.getenv("ANDROID_NDK_HOME"):
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print("WARNING: ANDROID_NDK_HOME environment variable not set", file=sys.stderr)
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args.sources = [Path(src) for src in args.sources]
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build_path = args.output / args.package_name
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# Remove the destination folder
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shutil.rmtree(build_path, ignore_errors=True)
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# Copy the Android project
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shutil.copytree(SDL_ROOT / "android-project", build_path)
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# Add the source files to the ndk-build and cmake projects
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replace_in_file(build_path / "app/jni/src/Android.mk", r"YourSourceHere\.c", " \\\n ".join(src.name for src in args.sources))
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replace_in_file(build_path / "app/jni/src/CMakeLists.txt", r"YourSourceHere\.c", "\n ".join(src.name for src in args.sources))
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# Remove placeholder source "YourSourceHere.c"
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(build_path / "app/jni/src/YourSourceHere.c").unlink()
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# Copy sources to output folder
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for src in args.sources:
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if not src.is_file():
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parser.error(f"\"{src}\" is not a file")
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shutil.copyfile(src, build_path / "app/jni/src" / src.name)
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sdl_project_files = (
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SDL_ROOT / "src",
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SDL_ROOT / "include",
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SDL_ROOT / "LICENSE.txt",
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SDL_ROOT / "README.md",
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SDL_ROOT / "Android.mk",
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SDL_ROOT / "CMakeLists.txt",
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SDL_ROOT / "cmake",
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)
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if args.variant == "copy":
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(build_path / "app/jni/SDL").mkdir(exist_ok=True, parents=True)
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for sdl_project_file in sdl_project_files:
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# Copy SDL project files and directories
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if sdl_project_file.is_dir():
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shutil.copytree(sdl_project_file, build_path / "app/jni/SDL" / sdl_project_file.name)
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elif sdl_project_file.is_file():
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shutil.copyfile(sdl_project_file, build_path / "app/jni/SDL" / sdl_project_file.name)
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elif args.variant == "symlink":
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(build_path / "app/jni/SDL").mkdir(exist_ok=True, parents=True)
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# Create symbolic links for all SDL project files
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for sdl_project_file in sdl_project_files:
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os.symlink(sdl_project_file, build_path / "app/jni/SDL" / sdl_project_file.name)
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elif args.variant == "aar":
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if not args.version:
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args.version = extract_sdl_version()
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major = args.version.split(".")[0]
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aar = f"SDL{ major }-{ args.version }.aar"
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# Remove all SDL java classes
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shutil.rmtree(build_path / "app/src/main/java")
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# Use prefab to generate include-able files
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gradle_add_prefab_and_aar(build_path / "app/build.gradle", aar=aar)
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# Make sure to use the prefab-generated files and not SDL sources
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android_mk_use_prefab(build_path / "app/jni/src/Android.mk")
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cmake_mk_no_sdl(build_path / "app/jni/CMakeLists.txt")
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aar_libs_folder = build_path / "app/libs"
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aar_libs_folder.mkdir(parents=True)
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with (aar_libs_folder / "copy-sdl-aars-here.txt").open("w") as f:
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f.write(f"Copy {aar} to this folder.\n")
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print(f"WARNING: copy { aar } to { aar_libs_folder }", file=sys.stderr)
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# Create entry activity, subclassing SDLActivity
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activity = args.package_name[args.package_name.rfind(".") + 1:].capitalize() + "Activity"
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activity_path = build_path / "app/src/main/java" / args.package_name.replace(".", "/") / f"{activity}.java"
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activity_path.parent.mkdir(parents=True)
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with activity_path.open("w") as f:
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f.write(textwrap.dedent(f"""
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package {args.package_name};
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import org.libsdl.app.SDLActivity;
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public class {activity} extends SDLActivity
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{{
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}}
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"""))
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# Add the just-generated activity to the Android manifest
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replace_in_file(build_path / "app/src/main/AndroidManifest.xml", "SDLActivity", activity)
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# Update project and build
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print("To build and install to a device for testing, run the following:")
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print(f"cd {build_path}")
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print("./gradlew installDebug")
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if __name__ == "__main__":
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raise SystemExit(main())
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