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lib
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node_modules
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npm
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node_modules
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balanced-match
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index.js
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'use strict'; module.exports = balanced; function balanced(a, b, str) { if (a instanceof RegExp) a = maybeMatch(a, str); if (b instanceof RegExp) b = maybeMatch(b, str); var r = range(a, b, str); return r && { start: r[0], end: r[1], pre: str.slice(0, r[0]), body: str.slice(r[0] + a.length, r[1]), post: str.slice(r[1] + b.length) }; } function maybeMatch(reg, str) { var m = str.match(reg); return m ? m[0] : null; } balanced.range = range; function range(a, b, str) { var begs, beg, left, right, result; var ai = str.indexOf(a); var bi = str.indexOf(b, ai + 1); var i = ai; if (ai >= 0 && bi > 0) { begs = []; left = str.length; while (i >= 0 && !result) { if (i == ai) { begs.push(i); ai = str.indexOf(a, i + 1); } else if (begs.length == 1) { result = [ begs.pop(), bi ]; } else { beg = begs.pop(); if (beg < left) { left = beg; right = bi; } bi = str.indexOf(b, i + 1); } i = ai < bi && ai >= 0 ? ai : bi; } if (begs.length) { result = [ left, right ]; } } return result; }