1  function escapeRegExp(string) {
 2      return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string
 3  }
 4  
 5  /**
 6   * Removes excluded text from a Node.
 7   *
 8   * @param {Node} target Node to filter.
 9   * @param {string} exclude CSS selector of nodes to exclude.
10   * @returns {DOMString} Text from `target` with text removed.
11   */
12  export function filterText(target, exclude) {
13      const clone = target.cloneNode(true);  // clone as to not modify the live DOM
14      if (exclude) {
15          // remove excluded nodes
16          clone.querySelectorAll(exclude).forEach(node => node.remove());
17      }
18      return clone.innerText;
19  }
20  
21  // Callback when a copy button is clicked. Will be passed the node that was clicked
22  // should then grab the text and replace pieces of text that shouldn't be used in output
23  export function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") {
24      var regexp;
25      var match;
26  
27      // Do we check for line continuation characters and "HERE-documents"?
28      var useLineCont = !!lineContinuationChar
29      var useHereDoc = !!hereDocDelim
30  
31      // create regexp to capture prompt and remaining line
32      if (isRegexp) {
33          regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)')
34      } else {
35          regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)')
36      }
37  
38      const outputLines = [];
39      var promptFound = false;
40      var gotLineCont = false;
41      var gotHereDoc = false;
42      const lineGotPrompt = [];
43      for (const line of textContent.split('\n')) {
44          match = line.match(regexp)
45          if (match || gotLineCont || gotHereDoc) {
46              promptFound = regexp.test(line)
47              lineGotPrompt.push(promptFound)
48              if (removePrompts && promptFound) {
49                  outputLines.push(match[2])
50              } else {
51                  outputLines.push(line)
52              }
53              gotLineCont = line.endsWith(lineContinuationChar) & useLineCont
54              if (line.includes(hereDocDelim) & useHereDoc)
55                  gotHereDoc = !gotHereDoc
56          } else if (!onlyCopyPromptLines) {
57              outputLines.push(line)
58          } else if (copyEmptyLines && line.trim() === '') {
59              outputLines.push(line)
60          }
61      }
62  
63      // If no lines with the prompt were found then just use original lines
64      if (lineGotPrompt.some(v => v === true)) {
65          textContent = outputLines.join('\n');
66      }
67  
68      // Remove a trailing newline to avoid auto-running when pasting
69      if (textContent.endsWith("\n")) {
70          textContent = textContent.slice(0, -1)
71      }
72      return textContent
73  }