| 1 | "use strict";
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| 2 |
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| 3 | var indexOfc = function(buf, chr, offset, stop) {
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| 4 | for(var i = offset || 0; i < stop; i++) {
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| 5 | if(buf[i] == chr)
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| 6 | return i;
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| 7 | }
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| 8 | return -1;
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| 9 | };
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| 10 |
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| 11 | module.exports = function(buf, search, offset, stop) {
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| 12 | stop = Math.min(stop || buf.length, buf.length);
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| 13 |
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| 14 | if(typeof search == "string")
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| 15 | search = new Buffer(search);
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| 16 | else if(typeof search == "number")
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| 17 | return indexOfc(buf, search, offset, stop);
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| 18 |
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| 19 | offset = offset || 0;
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| 20 |
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| 21 | var m = 0;
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| 22 | var s = -1;
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| 23 |
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| 24 | for(var i = offset; i < stop; ++i) {
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| 25 | if(buf[i] == search[m]) {
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| 26 | if(s == -1) s = i;
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| 27 | ++m;
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| 28 | if(m == search.length)
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| 29 | return s;
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| 30 | } else {
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| 31 | s = -1;
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| 32 | m = 0;
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| 33 | }
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| 34 | }
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| 35 |
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| 36 | return -1;
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| 37 | };
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