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* Copyright 2026 nodearchive
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import tarStream from 'tar-stream'
import type { ArchiveManifest } from '../../.types/ArchiveManifest/type.js'
import { NodearchiveError } from '../../.errors/class.js'
import { toNodearchiveError } from '../../.helpers/toNodearchiveError/index.js'
export async function writeTarArchive(
manifest: ArchiveManifest
): Promise<Uint8Array> {
try {
const pack = tarStream.pack()
const chunks: Buffer[] = []
const output = new Promise<Uint8Array>((resolve, reject) => {
pack.on('data', (chunk) => {
chunks.push(Buffer.from(chunk))
})
pack.on('error', reject)
pack.on('end', () => resolve(Uint8Array.from(Buffer.concat(chunks))))
})
for (const entry of manifest.entries) {
await writeEntry(pack, entry)
}
pack.finalize()
return output
} catch (error) {
throw toNodearchiveError(
error,
'ARCHIVE_SERIALIZATION_FAILED',
'Failed to encode tar archive'
)
}
}
function writeEntry(
pack: tarStream.Pack,
entry: ArchiveManifest['entries'][number]
): Promise<void> {
return new Promise((resolve, reject) => {
if (entry.kind === 'directory') {
pack.entry(
{
mode: entry.mode ?? 0o755,
name: `${entry.path}/`,
type: 'directory',
},
onComplete
)
return
}
if (!entry.data) {
reject(
new NodearchiveError(
'ARCHIVE_SERIALIZATION_FAILED',
`Missing file data: ${entry.path}`
)
)
return
}
pack.entry(
{
mode: entry.mode ?? 0o644,
name: entry.path,
type: 'file',
},
Buffer.from(entry.data, 'base64'),
onComplete
)
function onComplete(error?: Error | null) {
if (error) {
reject(error)
return
}
resolve()
}
})
}
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