Javascript和正則表達式以導入CSV文件

Question

這是從CSV導入的文本的原始行：

10,"2013-04-17 16:29:36",out,"BTC sold: [tid:0450750450454505] 0.85985758 BTC at 69.88355 € (0.55% fee)",0.85985758,0

我要編輯的代碼非常簡單，來自[本教程頁] [1]（*主要代碼的副本在此頁底部）：

正則表達式的主要代碼部分是：

var objPattern = new RegExp(
  (
    // Delimiters.
    "(\\" + strDelimiter + "|\\r?\\n|\\r|^)" +

    // Quoted fields.
    "(?:\"([^\"]*(?:\"\"[^\"]*)*)\"|" +

    // Standard fields.
    "([^\"\\" + strDelimiter + "\\r\\n]*))"
  ),
  "gi"
);

我想要的是，在開始復制的原始行文本中，我想刪除或忽略括號，括號（）之間的內容，並使“ at”一詞成為新列的定界符。 當我導入CSV時，新列的值應為單詞“ at”之后的值。

等效的正則表達式代碼應為：[（。 ？）] |（（。 ？））和（\\ bat \\ b）

我嘗試了各種選項，例如在定界符部分將（\\ bat \\ b）添加到regexp中，但是它不起作用。

非常感謝您的幫助！

完整代碼：

function onOpen() {
  var ss = SpreadsheetApp.getActiveSpreadsheet();
  var csvMenuEntries = [{name: "Load from CSV file", functionName: "importFromCSV"}];
  ss.addMenu("CSV", csvMenuEntries);
}

function search() {
  // Prompt the user for a search term
  var searchTerm = Browser.inputBox("Enter the string to search for:");

  // Get the active spreadsheet and the active sheet
  var ss = SpreadsheetApp.getActiveSpreadsheet();
  var sheet = ss.getActiveSheet();

  // Set up the spreadsheet to display the results
  var headers = [["File Name", "File Type", "URL"]];
  sheet.clear();
  sheet.getRange("A1:C1").setValues(headers);

  // Search the files in the user's Docs List for the search term
  var files = DocsList.find(searchTerm);

  // Loop through the results and display the file name, file type, and URL
  for (var i = 0; i < files.length; i++) {
    sheet.getRange(i+2, 1, 1, 1).setValue(files[i].getName());
    sheet.getRange(i+2, 2, 1, 1).setValue(files[i].getType());
    if (files[i].getType() == "document") {
      urlBase = "https://docs.google.com/Doc?docid=";
    }
    else if (files[i].getType() == "spreadsheet") {
      urlBase = "https://spreadsheets.google.com/ccc?key=";
    }
    else if (files[i].getType() == "presentation") {
      urlBase = "https://docs.google.com/present/view?id=";
    }
    else {
      urlBase = "https://docs.google.com/fileview?id=";
    }
    sheet.getRange(i+2, 3, 1, 1).setValue(urlBase + files[i].getId());
  }
}

function importFromCSV() {
  var fileName = "history_BTC.csv";


 var files = DocsList.getFiles();
  var csvFile = "";



  for (var i = 0; i < files.length; i++) {
    if (files[i].getName() == fileName) {
      csvFile = files[i].getContentAsString();

      break;
    }
  }

  var csvData = CSVToArray(csvFile, ",");
  var ss = SpreadsheetApp.getActiveSpreadsheet();
  var sheet = ss.getActiveSheet();
  for (var i = 0; i < csvData.length; i++) {
    sheet.getRange(i+1, 1, 1, csvData[i].length).setValues(new Array(csvData[i]));
  }
}

// This will parse a delimited string into an array of
// arrays. The default delimiter is the comma, but this
// can be overriden in the second argument.

function CSVToArray( strData, strDelimiter ){
  // Check to see if the delimiter is defined. If not,
  // then default to comma.
  strDelimiter = (strDelimiter || "," );


  // Create a regular expression to parse the CSV values.
  var objPattern = new RegExp(
    (
      // Delimiters.
      "(\\" + strDelimiter + "|\\r?\\n|\bat\b|\\r|^)" +

      // Quoted fields.
      "(?:\"([^\"]*(?:\"\"[^\"]*)*)\"|" +

      // Standard fields.
      "([^\"\\" + strDelimiter + "\\r\\n]*))"

    ),
    "gi"
  );


  // Create an array to hold our data. Give the array
  // a default empty first row.
  var arrData = [[]];

  // Create an array to hold our individual pattern
  // matching groups.
  var arrMatches = null;


  // Keep looping over the regular expression matches
  // until we can no longer find a match.
  while (arrMatches = objPattern.exec( strData )){

    // Get the delimiter that was found.
    var strMatchedDelimiter = arrMatches[ 1 ];

    // Check to see if the given delimiter has a length
    // (is not the start of string) and if it matches
    // field delimiter. If id does not, then we know
    // that this delimiter is a row delimiter.
    if (
      strMatchedDelimiter.length &&
      (strMatchedDelimiter != strDelimiter)
    ){

      // Since we have reached a new row of data,
      // add an empty row to our data array.
      arrData.push( [] );

    }


    // Now that we have our delimiter out of the way,
    // let's check to see which kind of value we
    // captured (quoted or unquoted).
    if (arrMatches[ 2 ]){

      // We found a quoted value. When we capture
      // this value, unescape any double quotes.
      var strMatchedValue = arrMatches[ 2 ].replace(
        new RegExp( "\"\"", "g" ),
        "\""
      );

    } else {

      // We found a non-quoted value.
      var strMatchedValue = arrMatches[ 3 ];

    }


    // Now that we have our value string, let's add
    // it to the data array.
    arrData[ arrData.length - 1 ].push( strMatchedValue );
  }

  // Return the parsed data.
  return( arrData );
}

Answer 1

首先，將“ at”中的“替換為”，”。 不需要正則表達式。

然后是一個簡單的替換：

a=myString.replace(" at ", ",");
b=a.replace(" at ", ",");
c=b.replace(/(\[[^\]]+\]|\([^)]+\))/gi, "");