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25 lines
643 B
25 lines
643 B
10 years ago
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'use strict';
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var isCallable = require('../object/is-callable')
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, value = require('../object/valid-value')
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, call = Function.prototype.call;
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module.exports = function (fmap) {
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fmap = Object(value(fmap));
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return function (pattern) {
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var context = value(this);
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pattern = String(pattern);
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return pattern.replace(/%([a-zA-Z]+)|\\([\u0000-\uffff])/g,
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function (match, token, escape) {
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var t, r;
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if (escape) return escape;
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t = token;
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while (t && !(r = fmap[t])) t = t.slice(0, -1);
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if (!r) return match;
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if (isCallable(r)) r = call.call(r, context);
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return r + token.slice(t.length);
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});
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};
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};
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