24 lines
1021 B
JavaScript
24 lines
1021 B
JavaScript
var L = (function(cfb/*:CFBContainer*/)/*:Array<number>*/{
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var mini_size = 0, fat_size = 0;
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for(var i = 0; i < cfb.FileIndex.length; ++i) {
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var file = cfb.FileIndex[i];
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if(!file.content) continue;
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var flen = file.content.length;
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if(flen > 0){
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if(flen < 0x1000) mini_size += (flen + 0x3F) >> 6;
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else fat_size += (flen + 0x01FF) >> 9;
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}
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}
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var dir_cnt = (cfb.FullPaths.length +3) >> 2;
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var mini_cnt = (mini_size + 7) >> 3;
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var mfat_cnt = (mini_size + 0x7F) >> 7;
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var fat_base = mini_cnt + fat_size + dir_cnt + mfat_cnt;
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var fat_cnt = (fat_base + 0x7F) >> 7;
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var difat_cnt = fat_cnt <= 109 ? 0 : Math.ceil((fat_cnt-109)/0x7F);
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while(((fat_base + fat_cnt + difat_cnt + 0x7F) >> 7) > fat_cnt) difat_cnt = ++fat_cnt <= 109 ? 0 : Math.ceil((fat_cnt-109)/0x7F);
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var L = [1, difat_cnt, fat_cnt, mfat_cnt, dir_cnt, fat_size, mini_size, 0];
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cfb.FileIndex[0].size = mini_size << 6;
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L[7] = (cfb.FileIndex[0].start=L[0]+L[1]+L[2]+L[3]+L[4]+L[5])+((L[6]+7) >> 3);
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return L;
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})(cfb);
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