171 lines
4.1 KiB
Factor
171 lines
4.1 KiB
Factor
! Copyright (C) 2011 Alex Vondrak.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors alien alien.c-types alien.data
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alien.destructors alien.libraries alien.strings alien.syntax
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combinators debugger destructors fry graphviz io
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io.encodings.ascii kernel libc literals locals math memoize
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prettyprint sequences specialized-arrays splitting system ;
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SPECIALIZED-ARRAY: void*
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IN: graphviz.ffi
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<<
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"libgraph" {
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{ [ os macosx? ] [ "libgraph.dylib" ] }
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{ [ os unix? ] [ "libgraph.so" ] }
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{ [ os windows? ] [ "graph.dll" ] }
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} cond cdecl add-library
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"libgvc"
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{
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{ [ os macosx? ] [ "libgvc.dylib" ] }
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{ [ os unix? ] [ "libgvc.so" ] }
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{ [ os windows? ] [ "gvc.dll" ] }
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} cond cdecl add-library
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>>
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LIBRARY: libgraph
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! Types
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C-TYPE: Agraph_t
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C-TYPE: Agnode_t
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C-TYPE: Agedge_t
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! Graphs & subgraphs
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FUNCTION: Agraph_t* agopen ( c-string name, int kind ) ;
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FUNCTION: Agraph_t* agsubg ( Agraph_t* g, c-string name ) ;
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FUNCTION: void agclose ( Agraph_t* g ) ;
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DESTRUCTOR: agclose
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: kind ( graph -- magic-constant )
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[ directed?>> ] [ strict?>> ] bi
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[ 3 2 ? ] [ 1 0 ? ] if ;
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! Nodes
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FUNCTION: Agnode_t* agnode ( Agraph_t* g, c-string name ) ;
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FUNCTION: Agnode_t* agfstnode ( Agraph_t* g ) ;
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FUNCTION: Agnode_t* agnxtnode ( Agraph_t* g, Agnode_t* n ) ;
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<PRIVATE
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: next-node ( g n -- g n' )
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[ dup ] dip agnxtnode ; inline
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: (each-node) ( Agraph_t* Agnode_t* quot -- )
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'[ [ nip @ ] 2keep next-node dup ] loop 2drop ; inline
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PRIVATE>
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: each-node ( Agraph_t* quot -- )
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[ dup agfstnode ] dip
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over [ (each-node) ] [ 3drop ] if ; inline
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! Edges
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FUNCTION: Agedge_t* agedge ( Agraph_t* g,
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Agnode_t* t,
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Agnode_t* h ) ;
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! Attributes
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FUNCTION: Agnode_t* agprotonode ( Agraph_t* g ) ;
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FUNCTION: Agedge_t* agprotoedge ( Agraph_t* g ) ;
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FUNCTION: c-string agget ( void* obj, c-string name ) ;
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FUNCTION: int agsafeset ( void* obj,
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c-string name,
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c-string value,
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c-string default ) ;
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LIBRARY: libgvc
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! Graphviz contexts
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C-TYPE: GVC_t
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FUNCTION: GVC_t* gvContext ( ) ;
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<PRIVATE
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FUNCTION-ALIAS: int-gvFreeContext
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int gvFreeContext ( GVC_t* gvc ) ;
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PRIVATE>
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ERROR: ffi-errors n ;
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M: ffi-errors error.
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"Graphviz FFI indicates that " write
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n>> pprint
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" error(s) occurred while rendering." print
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"(The messages were probably printed to STDERR.)" print ;
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: gvFreeContext ( gvc -- )
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int-gvFreeContext dup zero? [ drop ] [ ffi-errors ] if ;
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DESTRUCTOR: gvFreeContext
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! Layout
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FUNCTION: int gvLayout ( GVC_t* gvc,
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Agraph_t* g,
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c-string engine ) ;
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FUNCTION: int gvFreeLayout ( GVC_t* gvc, Agraph_t* g ) ;
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! Rendering
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FUNCTION: int gvRenderFilename ( GVC_t* gvc,
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Agraph_t* g,
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c-string format,
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c-string filename ) ;
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! Supported layout engines (dot, neato, etc.) and output
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! formats (png, jpg, etc.)
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<PRIVATE
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ENUM: api_t
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API_render
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API_layout
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API_textlayout
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API_device
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API_loadimage ;
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! This function doesn't exist on the Linux mason in Graphviz 2.28
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FUNCTION: char**
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gvPluginList
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( GVC_t* gvc, c-string kind, int* size, c-string str ) ;
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:: Plugin-list ( kind-string -- seq )
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[
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gvContext &gvFreeContext
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kind-string
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0 int <ref> dup :> size*
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f
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gvPluginList &(free) :> ret
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size* int deref :> size
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ret size void* <c-direct-array> [
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&(free) ascii alien>string
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] { } map-as
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] with-destructors ;
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! This function doesn't exist on the Windows mason in Graphviz 2.28
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FUNCTION: c-string
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gvplugin_list
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( GVC_t* gvc, api_t api, c-string str ) ;
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: plugin-list ( API_t -- seq )
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'[
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gvContext &gvFreeContext _ "" gvplugin_list
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" " split harvest
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] with-destructors ;
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PRIVATE>
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MEMO: supported-engines ( -- seq ) API_layout plugin-list ;
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MEMO: supported-formats ( -- seq ) API_device plugin-list ;
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