I would look in src/import-export/log-replay/ If there's no old transaction then the input is either NULL or empty and the log outputs a 'create'.
-derek Quoting Ross Boylan <[EMAIL PROTECTED]>: > > On Sat, 2008-03-29 at 08:54 -0700, Ross Boylan wrote: >> On Sat, 2008-03-29 at 11:40 -0400, Derek Atkins wrote: >> > I'm afraid that really there are no good design docs. Certainly >> > nothing coherent. Many times there are email discussions when a >> > feature is being created, but nothing really gets put down for >> > posterity in the source tree. Unfortunately I have to say the >> > the design doc is the source code. >> > >> > -derek >> Could anyone point me to where I can start to understand the log file >> format? As I said, my main interest is in effecting a repair, possibly >> by using excerpts from a previous log file. >> >> It looks as if the documentation has moved mostly to doxygen, and I've >> discovered http://svn.gnucash.org/docs/HEAD/index.html. However, the >> discussion of backup says "The actual file writing is done by >> xaccWriteAccountGroupFile() in in src/engine/FileIOP.hv" and that file >> doesn't seem to exist (nor does a search on doxygen turn up the >> function). > I found this: > > void > xaccTransWriteLog > ( > Transaction * > trans, > > > char > flag > > > ) > > > > Parameters: > > trans > The transaction to > write out to the log > > flag > The engine currently > uses the log > mechanism with flag > char set as follows: > 'B' for 'begin > edit' (followed by > the transaction as it > looks before any > changes, i.e. the > 'old value') 'D' for > delete (i.e. delete > the previous B; > echoes the data in > the 'old B') 'C' for > commit (i.e. accept a > previous B; data that > follows is the 'new > value') 'R' for > rollback (i.e. revert > to previous B; data > that follows should > be identical to old > B) > > So what if I have a new transaction, i.e., there is no old value? > -- Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory Member, MIT Student Information Processing Board (SIPB) URL: http://web.mit.edu/warlord/ PP-ASEL-IA N1NWH [EMAIL PROTECTED] PGP key available _______________________________________________ gnucash-devel mailing list [email protected] https://lists.gnucash.org/mailman/listinfo/gnucash-devel
