php - preg_match_all to javascript -

can converting php regex pattern javascript compatible one?

php

preg_match_all('/(?ims)([a-z0-9\s\.\:#_\-@,]+)\{([^\}]*)\}/', $data, $matches); 

javascript

matches=data.match(/(?ims)([a-z0-9\s\.\:#_\-@,]+)\{([^\}]*)\}/); 

thanks

to mimic php output, need @ more regular expression. single match, javascript match method trick, multiple matches no longer return captured groups. in fact, there no out-of-the-box statement in javascript equivalent preg_match_all.

the method comes closest regex.exec, being method can both return captured groups , multiple matches. not return matches in 1 go. instead need iterate on them, instance this:

for (matches = []; result = regex.exec(data); matches.push(result)); 

now regular expression needs adjustments:

in javascript modifiers (ims) cannot specified have it, must specified @ end, after closing slash. note in php can same.

secondly, javascript has no support s modifier. in case not problem, regular expression not rely on -- same results without modifier.

in order exec method return multiple matches, regular expression must use g modifier, not needed nor allowed in php's preg_match_all -- _all in method name takes care of that.

so, in javascript, regular expression defined this:

var regex = /([a-z0-9\s\.\:#_\-@,]+)\{([^\}]*)\}/gim; 

finally, matches returned in different format in php. let's data "alpha{78} beta{333}", php return:

[["alpha{78}"," beta{333}"],["alpha"," beta"],["78","333"]] 

but above javascript code returns data in transposed way (rows , columns swapped):

[["alpha{78}","alpha","78"],[" beta{333}"," beta","333"]] 

so, if want same, need transpose array. here generic transpose function use that:

function transpose(a) {     return a[0].map(function (val, c) {         return a.map(function (r) {             return r[c];         });     }); } 

so putting together, job:

function transpose(a) {    return a[0].map(function (val, c) {      return a.map(function (r) {        return r[c];      });    });  }    // test data:  var data = "alpha{78} beta{333}";    var regex = /([a-z0-9\s\.\:#_\-@,]+)\{([^\}]*)\}/gim;    // collect matches in array  (var matches = []; result = regex.exec(data); matches.push(result));    // reorganise array mimic php output:  matches = transpose(matches);    console.log(json.stringify(matches));  // snippet only:  document.write(json.stringify(matches));

output:

[["alpha{78}"," beta{333}"],["alpha"," beta"],["78","333"]]