I would like to extract some data from the text which has following patterns.
text1
text1|text2
text1|text2[text3]
text1|text2[text3] text4
(text1|text2[text3], text4)
text1[text3]
text1[text3], text4
So far I managed to construct two expressions and when the first one fails it falls back on the second.
/\(?([^|[]*)\|?([^[]*)\[?(.*)\],?\s?([^)]*)\)?/
/([^|]*)\|?(.*)/
Perhaps there is better way to parse it.
Is it possible to capture everything above with one regex?
Thanks for help
Example
const items = [
"text1",
"text1|text2",
"text1|text2[text3]",
"text1|text2[text3] text4",
"(text1|text2[text3], text4)",
"text1[text3]",
"text1[text3], text4"
]
const parse = (text) => {
const [_, text1, text2, text3, text4] = /\(?([^|[]*)\|?([^[]*)\[?(.*)\],?\s?([^)]*)\)?/.exec(text)
|| /([^|]*)\|?(.*)/.exec(text)
return {
text1,
text2,
text3,
text4
};
}
for(const text of items) {
console.log(parse(text));
}You can use
const items = [
"text1",
"text1|text2",
"text1|text2[text3]",
"text1|text2[text3] text4",
"(text1|text2[text3], text4)",
"text1[text3]",
"text1[text3], text4"
]
const parse = (text) => {
const [_, text1, text2, text3, text4] = /^\(?([^[|]+)(?:\|([^[]+))?(?:\[([^\][]*)](?:\s*(?:,\s*)?([^\s)].*?))?)?\)?$/.exec(text)
return {
text1,
text2,
text3,
text4
};
}
for(const text of items) {
console.log(text, parse(text));
}See the regex demo. Details:
^ - start of string\(? - an optional )([^[|]+) - Group 1: one or more chars other than [ and |(?:\|([^[]+))? - an optional sequence of | and then Group 2: any one or more chars other than [ as many as possible(?:\[([^\][]*)](?:\s*(?:,\s*)?([^\s)].*?))?)? - an optional sequence of
\[([^\][]*)] - [, zero or more chars other than [ and ] (captured into Group 3) and then a ](?:\s*(?:,\s*)?([^\s)].*?))? - an optional sequence of
\s* - zero or more whitespace chars(?:,\s*)? - an optional sequence of , and zero or more whitespace chars([^\s)].*?) - Group 4: a char other than whitespace and ) and then zero or more chars other than line break chars, as few as possible\)? - an optional )$ - end of string.