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* Runner
* Executes the transpiler with the given configuration
*/
import { dirname, resolve } from "node:path";
import { existsSync, statSync, renameSync } from "node:fs";
import InputExpansion from "../transpiler/data/InputExpansion";
import Transpiler from "../transpiler/Transpiler";
import ICliConfig from "./types/ICliConfig";
import ResultPrinter from "./ResultPrinter";
import ITranspilerResult from "../transpiler/types/ITranspilerResult";
/** Result of categorizing inputs into directories and files */
interface ICategorizedInputs {
srcDirs: string[];
explicitFiles: string[];
}
/** Result of determining output path */
interface IOutputPathResult {
outDir: string;
explicitOutputFile: string | null;
}
/**
* Execute the transpiler
*/
class Runner {
/**
* Execute the transpiler with the given configuration
* @param config - CLI configuration
*/
static async execute(config: ICliConfig): Promise<void> {
const { srcDirs, explicitFiles } = this._categorizeInputs(config.inputs);
const files = this._expandInputFiles(config.inputs);
const { outDir, explicitOutputFile } = this._determineOutputPath(
config,
files,
);
const pipeline = new Transpiler({
inputs: [...srcDirs, ...explicitFiles],
includeDirs: config.includeDirs,
outDir,
headerOutDir: config.headerOutDir,
basePath: config.basePath,
preprocess: config.preprocess,
defines: config.defines,
cppRequired: config.cppRequired,
noCache: config.noCache,
parseOnly: config.parseOnly,
target: config.target,
debugMode: config.debugMode,
});
const result = await pipeline.run();
this._renameOutputIfNeeded(result, explicitOutputFile);
ResultPrinter.print(result);
process.exit(result.success ? 0 : 1);
}
/**
* Categorize inputs into directories and explicit files.
*/
private static _categorizeInputs(inputs: string[]): ICategorizedInputs {
const srcDirs: string[] = [];
const explicitFiles: string[] = [];
for (const input of inputs) {
const resolvedPath = resolve(input);
const isDir =
existsSync(resolvedPath) && statSync(resolvedPath).isDirectory();
if (isDir) {
srcDirs.push(resolvedPath);
} else {
explicitFiles.push(resolvedPath);
}
}
return { srcDirs, explicitFiles };
}
/**
* Expand input paths to .cnx files.
*/
private static _expandInputFiles(inputs: string[]): string[] {
let files: string[];
try {
files = InputExpansion.expandInputs(inputs);
} catch (error) {
console.error(`Error: ${error}`);
process.exit(1);
}
if (files.length === 0) {
console.error("Error: No .cnx files found");
process.exit(1);
}
return files;
}
/**
* Determine output directory and explicit filename from config.
*/
private static _determineOutputPath(
config: ICliConfig,
files: string[],
): IOutputPathResult {
if (!config.outputPath) {
return { outDir: dirname(files[0]), explicitOutputFile: null };
}
const isExplicitFile =
/\.(c|cpp)$/.test(config.outputPath) && !config.outputPath.endsWith("/");
const stats = existsSync(config.outputPath)
? statSync(config.outputPath)
: null;
// Directory path
if (stats?.isDirectory() || config.outputPath.endsWith("/")) {
return { outDir: config.outputPath, explicitOutputFile: null };
}
// Explicit output file
Eif (isExplicitFile) {
if (files.length > 1) {
console.error(
"Error: Cannot use explicit output filename with multiple input files",
);
console.error("Use a directory path instead: -o <directory>/");
process.exit(1);
}
return {
outDir: dirname(config.outputPath),
explicitOutputFile: resolve(config.outputPath),
};
}
// Default: treat as directory
return { outDir: config.outputPath, explicitOutputFile: null };
}
/**
* Rename output file if explicit filename was specified.
*/
private static _renameOutputIfNeeded(
result: ITranspilerResult,
explicitOutputFile: string | null,
): void {
if (
!explicitOutputFile ||
!result.success ||
result.outputFiles.length === 0
) {
return;
}
const generatedFile = result.outputFiles[0];
if (generatedFile !== explicitOutputFile) {
renameSync(generatedFile, explicitOutputFile);
result.outputFiles[0] = explicitOutputFile;
}
}
}
export default Runner;
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