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POParse CSV string w/ variable enclosure character in Javascript
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  1. POParse CSV string w/ variable enclosure character in Javascript
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    copied!<p>I found this function to parse a csv string into a multi-dim array in javascript, <a href="https://stackoverflow.com/questions/1293147/javascript-code-to-parse-csv-data">here</a>, however I need to update it to also allow single quotes (') to be used as the enclosure in addition to double quotes (") which it already does. i.e. I need it to be able to parse:</p> <pre><code>CSVToArray('"a, comma","2","3"'); // =&gt; [['a, comma', '2', '3']] </code></pre> <p>As well as this</p> <pre><code>CSVToArray("'a, comma','2','3'"); // =&gt; [['a, comma', '2', '3']] </code></pre> <p>The function:</p> <pre><code>// 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|\\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 &amp;&amp; (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 ); } </code></pre>
 

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