Commit Graph

2 Commits

Author SHA1 Message Date
Dick Hollenbeck 4011953455 Jettison FP_LIB_TABLE::ConvertFromLegacy() into a static function, where it
was used locally.  Then comment it out in favor of a newer strategy for
filling in nicknames in cvpcb. 

Add MODULE* FootprintLoadWithOptionalNickname( const FPID& aFootprintId )
        throw( IO_ERROR, PARSE_ERROR );
from code found elsewhere.
2014-04-09 08:33:04 -05:00
Dick Hollenbeck 6bf3d7cdc3 Implement "KiCad s-epression" support for boost::property_tree's ptree, the 8
bit string version of property_tree. The ram resident structure of the ptree is
mostly compatible with one created using the xml_parser from
boost::property_tree, with slight differences in the way atoms are stored. The
result is you can use Format() to convert from xml to s-expression, but not the
other way around. You can write a simple s-expression beautifier in just a few
lines of code.

The main value however is the s-expression parser, i.e. Scan(), which is an
alternative to crafting a custom recursive descent parser for a particular
grammar. The tipping point depends on whether you want to read only a small
portion of a much larger document. If so, then using the ptree will likely be a
"faster to code" route. Documentation on how to navigate a ptree can be found on
the boost website and there are a number of examples in the
pcbnew/eagle_plugin.cpp file in this project. Powerful path navigation support
makes it easy to extract a subset of a ptree.
2013-04-08 16:04:45 -05:00