Last change
on this file since bdd6491 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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File size:
1.1 KB
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[6a3a178] | 1 | //boyer-moore?
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| 2 | module.exports = function bm(buf,search,offset){
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| 3 | var m = 0, j = 0
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| 4 | var table = []
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| 5 |
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| 6 | var ret = -1;
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| 7 | for(var i=offset||0;i<buf.length;++i){
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| 8 | console.log('i',i)
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| 9 |
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| 10 | table[i] = [[i,0]]
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| 11 | if(buf[i] === search[0]) {
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| 12 | for(j = search.length-1;j>0;--j){
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| 13 | table[i].push([i+j,j])
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| 14 | console.log('j',j)
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| 15 | if(buf[i+j] !== search[j]) {
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| 16 |
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| 17 | //i += j
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| 18 | j = -1
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| 19 | break
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| 20 | }
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| 21 | }
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| 22 | if(j === 0) {
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| 23 | ret = i
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| 24 | break
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| 25 | }
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| 26 | }
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| 27 | }
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| 28 |
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| 29 | console.log(table)
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| 30 | renderTable(table,buf,search)
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| 31 | return ret
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| 32 | }
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| 33 |
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| 34 |
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| 35 | var chalk = require('chalk')
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| 36 | function renderTable(table,buf,search){
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| 37 | var s = ''
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| 38 |
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| 39 | console.log('-----')
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| 40 | console.log('search:',search)
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| 41 | console.log('-----')
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| 42 | console.log(buf+'')
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| 43 |
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| 44 | table.forEach(function(a){
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| 45 | if(!a) return;// console.log('')
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| 46 | a.forEach(function(v){
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| 47 | if(!v) return;
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| 48 | var pad = ''
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| 49 | while(pad.length < v[0]){
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| 50 | pad += ' '
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| 51 | }
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| 52 | if(search[v[1]] === buf[v[0]]) console.log(pad+chalk.green(search[v[1]]))
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| 53 | else console.log(pad+chalk.red(search[v[1]]))
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| 54 |
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| 55 | })
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| 56 | })
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| 57 | console.log('-----')
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| 58 | }
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