Is there a size limit to a blob for Utilities.unzip(blob) in Google Apps Script?

问题

I have a google script which accesses a website, finds a .zip file, unzips it, and extracts the relevant data from the relevant files.

I want to do the same thing, but for a different, larger .zip file on the same site.

I've accessed the .zip (using almost identical code), but it throws an error: "Could not unzip."

My code:

  var dir = UrlFetchApp.fetch(url);
  var b = dir.getBlob();
  var files = Utilities.unzip(b);

The only difference between the two files are these:

• File A ends with "Update%201.8.5.zip" and contains 9 files (5.46MB, 5.15MB zipped)
• File B ends with "260_185.zip" and contains 407 files (384MB, 280MB zipped)

This makes me think that there is a limit (size or number of files) to the Utilities.unzip() method. Can anyone confirm this, or is there something with the format of the filenames that is messing things up?

回答1:

Quotas for Google Services include the restriction

URL Fetch data received: 100MB / day

so it seems your URL request could not actually produce a valid zip file.

回答2:

Besides the URL Fetch limits, Utilities.unzip(blob) has its own undisclosed limits.

I just tried to unzip a >200MB file that I get by using DriveApp.getFileById(id) and it returned

El archivo contratacionesabiertas_bulk.csv.zip supera el tamaño de archivo máximo permitido.

(Translation by Google Translate)

The contratacionesabiertas_bulk.csv.zip file exceeds the maximum file size allowed.

来源：https://stackoverflow.com/questions/45830261/is-there-a-size-limit-to-a-blob-for-utilities-unzipblob-in-google-apps-script