从文档的第二条水平线向下删除所有内容 [英] Deleting all content down from the second horizontal line in a document

问题描述

我正在尝试创建一个脚本，以从页面中向下删除所有文本/内容.您可以在下面看到当前文档.

I'm trying to create a script to delete all text/content downwards from a page. Below you can see the current document.

当前，我具有脚本设置，以便它可以删除所有内容，包括"STARTHERE"文本中的所有内容.但是，我希望它从图像中的第二条水平线中删除，但是不包括该线.

Currently, I have the script set-up so that it deletes everything down and including from a text of, "STARTHERE". However, I want it to delete down from the second horizontal line in the image, however, not including the line.

1. 关于如何从第二条水平线中删除的任何想法?
2. deleteText startOffset和endOffsetInclusive到底是什么意思?是行号还是?

上一个脚本:

function removeText() {
    var body = DocumentApp.getActiveDocument().getBody();
    var rangeElement = body.editAsText();
    var start = "STARTHERE";
    var end = "ENDHERE";
    var rangeElement1 = DocumentApp.getActiveDocument().getBody().findText(start);
    var rangeElement2 = DocumentApp.getActiveDocument().getBody().findText(end);
    if (rangeElement1.isPartial()) {
       var startOffset = rangeElement1.getStartOffset();
       var endOffset = rangeElement2.getEndOffsetInclusive();
       rangeElement1.getElement().asText().deleteText(startOffset,endOffset);
    }
}

推荐答案

您将需要完全改变您的方法，因为findText仅找到文本，而水平线不是文本.这是一种特殊的文档元素， Horizo​​ntalRule .

You'll need to change your approach completely, because findText only finds text, and a horizontal line is not text; it is a special type of document element, HorizontalRule.

(由于您询问:startOffset和endOffsetInclusive是元素内的字符计数；例如，如果在包含大红狗"的段落中找到文本"red"，则startOffset为6，endOffset为9.这些都没有帮助)

(Since you asked: startOffset and endOffsetInclusive are character counts within an element; e.g., if the text "red" is found in a paragraph that consists of "A big red dog", then startOffset is 6 and endOffset is 9. None of this helps here)

这是我的方法:遍历Paragraph元素，寻找包含Horizo​​ntalRule元素的元素(使用

Here is my approach: loop over the Paragraph elements, looking for those that contain a HorizontalRule element (with findElement method). Once we found two such paragraphs, delete all subsequent ones.

有一个问题是，Apps脚本无法删除文档的最后一段；因此，我会提前添加空的段落，并且不要删除它.

There is a catch in that Apps Script can't delete the last paragraph of a document; for this reason I append empty paragraph ahead of time, and do not delete it.

function removeAfterSecondLine() {
  var body = DocumentApp.getActiveDocument().getBody();
  body.appendParagraph('');
  var para = body.getParagraphs();
  var ruleCount = 0;
  for (var i = 0; i < para.length - 1; i++) {
    if (ruleCount >= 2) {
      body.removeChild(para[i]);
    }
    else if (para[i].findElement(DocumentApp.ElementType.HORIZONTAL_RULE)) {
      ruleCount++;
    }
  }
}

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