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Can generate random new file name

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This commit is contained in:
Pierre HUBERT 2019-11-30 18:34:21 +01:00
parent 6736dec599
commit 72a4ba79f2
1 changed files with 23 additions and 0 deletions
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23
src/utils/UserDataUtils.ts
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@ -1,6 +1,7 @@
import { conf } from "../helpers/ConfigHelper";
import { join } from "path";
import { existsSync, mkdirSync, writeFileSync } from "fs";
import { randomStr } from "./CryptUtils";
/**
* User data utilities
@ -53,3 +54,25 @@ export function prepareFileCreation(userID: number, folderName: string) : string
return subfolder;
}
/**
* Generate a new file name in order to create a new file
*
* @param dir Target directory
* @param ext File extension
* @returns Generated file name (including dir)
*/
export function generateNewUserDataFileName(dir: string, ext: string) : string {
const sys_dir = pathUserData(dir, true);
if(!existsSync(sys_dir))
throw Error("Trying to create file into " + sys_dir + " but this directory does not exists!");
// Generate random file name
let filename : string;
do {
filename = randomStr(25) + "." + ext;
} while(existsSync(join(sys_dir, filename)));
return join(dir, filename);
}