const regex = /# Only include if previous char was start of string or delimiter
(?<=^|,)
(?:
# 1st option: empty quoted string (,'',)
'{2}
|
# 2nd option: nothing (,,)
(?:)
|
# 3rd option: all but quoted strings (,123,)
# (included linebreaks to allow multiline matching)
[^,'\r\n]+
|
# 4th option: quoted strings (,'123''321',)
# start pling
'
(?:
# double quote
'{2}
|
# or anything but quotes
[^']+
# at least one occurance - greedy
)+
# end pling
'
)
# Only include if next char is delimiter or end of string
(?=,|$)/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('# Only include if previous char was start of string or delimiter
(?<=^|,)
(?:
# 1st option: empty quoted string (,\'\',)
\'{2}
|
# 2nd option: nothing (,,)
(?:)
|
# 3rd option: all but quoted strings (,123,)
# (included linebreaks to allow multiline matching)
[^,\'\\r\\n]+
|
# 4th option: quoted strings (,\'123\'\'321\',)
# start pling
\'
(?:
# double quote
\'{2}
|
# or anything but quotes
[^\']+
# at least one occurance - greedy
)+
# end pling
\'
)
# Only include if next char is delimiter or end of string
(?=,|$)', 'gm')
const str = `12,'',',''',123
123,2.99,AMO024,Title,'Description, more info',,123987564`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions