Exposes a C API of omniscale/magnacarto that can be called from other langugages such as Node.js or Python and builds Magnacarto into a shared library.
buildFromFile(file *C.char, options C.Opts) (*C.char)
Expects a file path as well as a struct with options (see below) as input and returns a Mapnik or Mapserver style string.
buildFromString(mmlStr *C.char, options C.Opts) (output, error *C.char)
Expects a MML string in either JSON or YAML format and a struct with options (see below) as input and returns a Mapnik or Mapserver style string.
The options struct has the following C type definition:
typedef struct {
char* builderType;
char* baseDir;
char* sqliteDir;
char* fontDir;
char* shapeDir;
char* imageDir;
_Bool relPaths;
_Bool msNoMapBlock;
} Opts;
All these options are optional.
- Go >= 1.5
- Glide
- C Toolchain
Let's assume you want to develop within the directory libmagnacarto, then do the following (Bash style):
mkdir libmagnacarto
cd libmagnacarto
export $GOPATH=`pwd`
git clone https://github.com/gmgeo/libmagnacarto src/github.com/gmgeo/libmagnacarto
cd src/github.com/gmgeo/libmagnacarto
glide install
make
Make sure that glide is installed, you can either build it from source or obtain binaries at https://github.com/Masterminds/glide.