How to use the bodec.js.slice function in bodec
To help you get started, we’ve selected a few bodec examples, based on popular ways it is used in public projects.
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creationix / tedit / src / js-git / mixins / fs-db.js View on Github 
throw new Error("Only v2 pack indexes supported");
}
// Get the number of hashes in index
// This is the value of the last fan-out entry
var hashOffset = 8 + 255 * 4;
var length = readUint32(buffer, hashOffset);
hashOffset += 4;
var crcOffset = hashOffset + 20 * length;
var lengthOffset = crcOffset + 4 * length;
var largeOffset = lengthOffset + 4 * length;
var checkOffset = largeOffset;
var indexes = new Array(length);
for (var i = 0; i < length; i++) {
var start = hashOffset + i * 20;
var hash = bodec.toHex(bodec.slice(buffer, start, start + 20));
var crc = readUint32(buffer, crcOffset + i * 4);
var offset = readUint32(buffer, lengthOffset + i * 4);
if (offset & 0x80000000) {
offset = largeOffset + (offset &0x7fffffff) * 8;
checkOffset = Math.max(checkOffset, offset + 8);
offset = readUint64(buffer, offset);
}
indexes[i] = {
hash: hash,
offset: offset,
crc: crc
};
}
var packChecksum = bodec.toHex(bodec.slice(buffer, checkOffset, checkOffset + 20));
var checksum = bodec.toHex(bodec.slice(buffer, checkOffset + 20, checkOffset + 40));
if (sha1(bodec.slice(buffer, 0, checkOffset + 20)) !== checksum) {var crc = readUint32(buffer, crcOffset + i * 4);
var offset = readUint32(buffer, lengthOffset + i * 4);
if (offset & 0x80000000) {
offset = largeOffset + (offset &0x7fffffff) * 8;
checkOffset = Math.max(checkOffset, offset + 8);
offset = readUint64(buffer, offset);
}
indexes[i] = {
hash: hash,
offset: offset,
crc: crc
};
}
var packChecksum = bodec.toHex(bodec.slice(buffer, checkOffset, checkOffset + 20));
var checksum = bodec.toHex(bodec.slice(buffer, checkOffset + 20, checkOffset + 40));
if (sha1(bodec.slice(buffer, 0, checkOffset + 20)) !== checksum) {
throw new Error("Checksum mistmatch");
}
var byHash = {};
indexes.sort(function (a, b) {
return a.offset - b.offset;
});
indexes.forEach(function (data) {
byHash[data.hash] = {
offset: data.offset,
crc: data.crc,
};
});
var offsets = indexes.map(function (entry) {
return entry.offset;
}).sort(function (a, b) {var start = hashOffset + i * 20;
var hash = bodec.toHex(bodec.slice(buffer, start, start + 20));
var crc = readUint32(buffer, crcOffset + i * 4);
var offset = readUint32(buffer, lengthOffset + i * 4);
if (offset & 0x80000000) {
offset = largeOffset + (offset &0x7fffffff) * 8;
checkOffset = Math.max(checkOffset, offset + 8);
offset = readUint64(buffer, offset);
}
indexes[i] = {
hash: hash,
offset: offset,
crc: crc
};
}
var packChecksum = bodec.toHex(bodec.slice(buffer, checkOffset, checkOffset + 20));
var checksum = bodec.toHex(bodec.slice(buffer, checkOffset + 20, checkOffset + 40));
if (sha1(bodec.slice(buffer, 0, checkOffset + 20)) !== checksum) {
throw new Error("Checksum mistmatch");
}
var byHash = {};
indexes.sort(function (a, b) {
return a.offset - b.offset;
});
indexes.forEach(function (data) {
byHash[data.hash] = {
offset: data.offset,
crc: data.crc,
};
});
var offsets = indexes.map(function (entry) {var hash = bodec.toHex(bodec.slice(buffer, start, start + 20));
var crc = readUint32(buffer, crcOffset + i * 4);
var offset = readUint32(buffer, lengthOffset + i * 4);
if (offset & 0x80000000) {
offset = largeOffset + (offset &0x7fffffff) * 8;
checkOffset = Math.max(checkOffset, offset + 8);
offset = readUint64(buffer, offset);
}
indexes[i] = {
hash: hash,
offset: offset,
crc: crc
};
}
var packChecksum = bodec.toHex(bodec.slice(buffer, checkOffset, checkOffset + 20));
var checksum = bodec.toHex(bodec.slice(buffer, checkOffset + 20, checkOffset + 40));
if (sha1(bodec.slice(buffer, 0, checkOffset + 20)) !== checksum) {
throw new Error("Checksum mistmatch");
}
var byHash = {};
indexes.sort(function (a, b) {
return a.offset - b.offset;
});
indexes.forEach(function (data) {
byHash[data.hash] = {
offset: data.offset,
crc: data.crc,
};
});
var offsets = indexes.map(function (entry) {
return entry.offset;
