OK, this is a DRAFT!! It only outlines the barest bones of the future code. I'm posting it now because I've got another few days of other work that will mean this will go quiet until the weekend.
However, it does outline how I want to provide rule definitions as templates and to generate those templates from existing .c struct definitions. It's worth getting things sorted at this stage - things like naming conventions and frameworks are difficult to correct later. I won't put it all in the email - I'm v.fond of docbook and instead of wasting paper writing plans on paper, I compose my frameworks and notes in docbook. It means I can have my own documentation at my fingertips - always open in a nearby window. It also means that it's easy to convert into lots of formats. http://www.codehelp.co.uk/code/index.html The manpages for g_merge, qofbook and gncinvoice are more for my own reference than anything else, although I have put some comments in some files. // The Primitives #define GMCHAR 1 #define GMINT 2 #define GMFLOAT 3 #define GMDOUBLE 4 // First level compound / customised #define GMSTRING 10 // char* #define GMGBOOLEAN 11 #define GMGINT 12 #define GMGINT16 13 #define GMGINT64 14 // Second level compound - objects that can still be resolved to a single primitive #define GMGNC_QUOTE_SOURCE 100 .... // Third level - objects that contain more than one primitive. #define GMGNC_COMMODITY 1000 Compound objects are then further defined in terms of their component primitives. Note that gnc_commodity is not complete in this example - it has been shortened to allow easier testing. The create_rule adds the details of each field in the compound object to the rule set for that object. #define GMGNC_COMMODITY_FIELDS(x) { \ create_rule(x, "fullname", GMSTRING); \ create_rule(x, "namespace", GMSTRING); \ create_rule(x, "mnemonic", GMSTRING); \ create_rule(x, "printname", GMSTRING); \ create_rule(x, "exchange_code", GMSTRING); \ create_rule(x, "fraction", GMINT); \ create_rule(x, "unique_name", GMSTRING); \ create_rule(x, "mark", GMGINT16); \ create_rule(x, "quote_flag", GMGBOOLEAN); \ create_rule(x, "quote_source", GMGNC_QUOTE_SOURCE); } So far, a routine is working to assemble these rule sets into a workable structure. Next stage is to get the data into the same structures as the rules, then the comparison functions can start. -- Neil Williams ============= http://www.codehelp.co.uk/ http://www.dclug.org.uk/ http://www.isbn.org.uk/ http://sourceforge.net/projects/isbnsearch/ http://www.biglumber.com/x/web?qs=0x8801094A28BCB3E3
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