Method getMainClassName

lib/compilers/java.ts:218–249

(dirPath: string)

    }

    async getMainClassName(dirPath: string) {
        const maxSize = this.env.ceProps('max-asm-size', 64 * 1024 * 1024);
        const files = await fs.readdir(dirPath);
        const results = await Promise.all(
            files
                .filter(f => f.endsWith('.class'))
                .map(async classFile => {
                    const options = {
                        maxOutput: maxSize,
                        customCwd: dirPath,
                    };
                    const objResult = await this.exec(this.compiler.objdumper, [classFile], options);
                    if (objResult.code !== 0) {
                        return null;
                    }

                    if (this.mainRegex.test(objResult.stdout)) {
                        return classFile;
                    }
                    return null;
                }),
        );

        const candidates = results.filter(file => file !== null);
        if (candidates.length > 0) {
            // In case of multiple candidates, we'll just take the first one.
            const fileName = unwrap(candidates[0]);
            return fileName.substring(0, fileName.lastIndexOf('.'));
        }
        // We were unable to find a main method, let's error out assuming "Main"
        return 'Main';
    }

    override getArgumentParserClass() {
        return JavaParser;