Manipulating RTF files with GAS (to gdoc, en masse)

Question

Is there a way to programmatically convert RTF files to gdocs, or if you can't convert then just copy the contents? I have hundreds to store in gdrive so I'd prefer to convert them to make them easier to manipulate and merge later.

Answer 1

• You want to convert RTF file to Google Document.
• There are several hundreds of RTF files.

If my understanding is correct, how about this sample script?

As a simple conversion, you can use the script of Drive.Files.copy({mimeType: MimeType.GOOGLE_DOCS}, fileId) using Advanced Google Service. But from your question, I thought that when a lot of files are converted, the execution time might be over 6 minutes. So in this sample script, I conver the files with the files.copy method of Drive API using Batch request.

Sample script:

When you run the script, please set the parameters to the function of main(). And run main().

// Get file IDs of Microsoft Excel files in a specific folder including subfolders.
function getFileIds(folder, fileIds, q) {
  var files = folder.searchFiles(q);
  while (files.hasNext()) {
    fileIds.push(files.next().getId());
  }
  var folders = folder.getFolders();
  while (folders.hasNext()) {
    getFileIds(folders.next(), fileIds, q);
  }
  return fileIds;
}

// Convert Microsoft Docs to Google Docs
function convertToGoogleDocs(fileIds, dest, to) {
  var limit = 100;
  var split = Math.ceil(fileIds.length / limit);
  var reqs = [];
  for (var i = 0; i < split; i++) {
    var boundary = "xxxxxxxxxx";
    var payload = fileIds.splice(0, limit).reduce(function(s, e, i) {
      s += "Content-Type: application/http\r\n" +
        "Content-ID: " + i + "\r\n\r\n" +
        "POST https://www.googleapis.com/drive/v3/files/" + e + "/copy" + "\r\n" +
        "Content-Type: application/json; charset=utf-8\r\n\r\n" +
        JSON.stringify({"parents": [dest], "mimeType": to}) + "\r\n" +
        "--" + boundary + "\r\n";
      return s;
    }, "--" + boundary + "\r\n");
    var params = {
      method: "post",
      contentType: "multipart/mixed; boundary=" + boundary,
      payload: payload,
      headers: {Authorization: "Bearer " + ScriptApp.getOAuthToken()},
      muteHttpExceptions: true,
    };
    var req = UrlFetchApp.getRequest("https://www.googleapis.com/batch/drive/v3", params);
    reqs.push(req);
  }
  return UrlFetchApp.fetchAll(reqs);
}

// Please run this function.
function main() {
  var sourceFolderId = "###"; // Folder ID including source files. Please set this.
  var destinationFolderId = "###"; // Folder ID that the converted files are put. Please set this.

  var from = [MimeType.RTF, MimeType.MICROSOFT_WORD_LEGACY]; // Source mimeType
  var to = MimeType.GOOGLE_DOCS; // Destination mimeType
  var q = from.reduce(function(q, e, i) {return q += "mimeType='" + e + "'" + (i < from.length - 1 ? " or " : "")}, "");
  var fileIds = getFileIds(DriveApp.getFolderById(sourceFolderId), [], q);
  Logger.log(fileIds)
  var res = convertToGoogleDocs(fileIds, destinationFolderId, to);
  Logger.log(res);
}

Note:

• If the file size is large, an error might occur.
• When RTF file is retrieved by Drive API, there was the case that the mimeType becomes application/msword. So I searched both application/rtf and application/msword.
• Unfortunately, in the current stage, the batch request cannot use the media blob. So I used the files.copy method. In this case, the files can be converted without using the media blob.

References:

• Files: copy
• Batch request

If I misunderstood your question and this was not the result you want, I apologize.