js-cfb/bits/65_fat.js

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2017-09-14 21:14:22 +00:00
var chainit = function(w/*:number*/)/*:void*/ {
for(T += w; i<T-1; ++i) o.write_shift(-4, i+1);
if(w) { ++i; o.write_shift(-4, ENDOFCHAIN); }
};
T = i = 0;
for(T+=L[1]; i<T; ++i) o.write_shift(-4, consts.DIFSECT);
for(T+=L[2]; i<T; ++i) o.write_shift(-4, consts.FATSECT);
chainit(L[3]);
chainit(L[4]);
var j/*:number*/ = 0, flen/*:number*/ = 0;
var file/*:CFBEntry*/ = cfb.FileIndex[0];
for(; j < cfb.FileIndex.length; ++j) {
file = cfb.FileIndex[j];
if(!file.content) continue;
/*:: if(file.content == null) throw new Error("unreachable"); */
flen = file.content.length;
if(flen < 0x1000) continue;
file.start = T;
chainit((flen + 0x01FF) >> 9);
}
chainit((L[6] + 7) >> 3);
while(o.l & 0x1FF) o.write_shift(-4, consts.ENDOFCHAIN);
T = i = 0;
for(j = 0; j < cfb.FileIndex.length; ++j) {
file = cfb.FileIndex[j];
if(!file.content) continue;
/*:: if(file.content == null) throw new Error("unreachable"); */
flen = file.content.length;
if(!flen || flen >= 0x1000) continue;
file.start = T;
chainit((flen + 0x3F) >> 6);
}
while(o.l & 0x1FF) o.write_shift(-4, consts.ENDOFCHAIN);