util: Add general subprocess helper

src/blobs/overlays.ts

@@ -3,7 +3,7 @@ import * as path from 'path'
 import * as xml2js from 'xml2js'
 
 import { serializeBlueprint } from '../build/soong'
-import { aapt2 } from '../util/aapt2'
+import { aapt2 } from '../util/process'
 import { exists, listFilesRecursive } from '../util/fs'
 import { XML_HEADER } from '../util/headers'
 import { parseLines } from '../util/parse'

src/blobs/presigned.ts

@@ -2,7 +2,7 @@ import { promises as fs } from 'fs'
 import * as path from 'path'
 
 import { parseSeappContexts } from '../sepolicy/seapp'
-import { aapt2 } from '../util/aapt2'
+import { aapt2 } from '../util/process'
 import { listFilesRecursive } from '../util/fs'
 import { BlobEntry } from './entry'
 

src/util/process.ts

@@ -3,8 +3,12 @@ import { exec as execCb } from 'child_process'
 
 const exec = util.promisify(execCb)
 
-export async function aapt2(path: string, ...args: Array<string>) {
+export async function run(command: string) {
   // TODO: stop using shell
-  let { stdout, stderr } = await exec(`${path} ${args.join(' ')}`)
+  let { stdout } = await exec(command)
   return stdout.trim()
 }
+
+export async function aapt2(path: string, ...args: Array<string>) {
+  return await run(`${path} ${args.join(' ')}`)
+}