47 lines
1.5 KiB
TypeScript
47 lines
1.5 KiB
TypeScript
import * as fs from "fs";
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import * as path from "path";
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import { crawl } from "./crawl";
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import { id } from "tsafe/id";
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type TransformSourceCode = (params: { sourceCode: Buffer; filePath: string }) =>
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| {
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modifiedSourceCode: Buffer;
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newFileName?: string;
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}
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| undefined;
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/** Apply a transformation function to every file of directory */
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export function transformCodebase(params: { srcDirPath: string; destDirPath: string; transformSourceCode?: TransformSourceCode }) {
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const {
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srcDirPath,
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destDirPath,
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transformSourceCode = id<TransformSourceCode>(({ sourceCode }) => ({
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"modifiedSourceCode": sourceCode
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}))
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} = params;
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for (const file_relative_path of crawl({ "dirPath": srcDirPath, "returnedPathsType": "relative to dirPath" })) {
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const filePath = path.join(srcDirPath, file_relative_path);
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const transformSourceCodeResult = transformSourceCode({
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"sourceCode": fs.readFileSync(filePath),
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filePath
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});
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if (transformSourceCodeResult === undefined) {
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continue;
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}
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fs.mkdirSync(path.dirname(path.join(destDirPath, file_relative_path)), {
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"recursive": true
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});
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const { newFileName, modifiedSourceCode } = transformSourceCodeResult;
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fs.writeFileSync(
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path.join(path.dirname(path.join(destDirPath, file_relative_path)), newFileName ?? path.basename(file_relative_path)),
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modifiedSourceCode
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);
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}
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}
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