Squid internals

Packer (src/Packer.c)
Usage
packerToStoreInit(packer, e)
/* Take the packer and associate it with a storeentry */
packerToMemInit(packer, membuf)
/* take the packer and associate it with a membuf */
packerClean(packer)
/* disassociate the packer */
packerAppend(packer, buf, sz)
/* send the given buf to the relevant target */
packerPrintf(packer, fmt, ...)
/* printf()-style interface to a packer target */