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LIBGVC(3) FreeBSD Library Functions Manual LIBGVC(3) NAME libgvc - Graphviz context library SYNOPSIS #include <graphviz/gvc.h> /* set up a graphviz context */ extern GVC_t *gvNEWcontext(char **info, char *user); extern char *gvUsername(void); /* set up a graphviz context - alternative */ /* (wraps the above two functions using info built into libgvc) */ extern GVC_t *gvContext(void); /* parse command line args - minimally argv[0] sets layout engine */ extern int gvParseArgs(GVC_t *gvc, int argc, char **argv); extern graph_t *gvNextInputGraph(GVC_t *gvc); /* Compute a layout using a specified engine */ extern int gvLayout(GVC_t *gvc, graph_t *g, char *engine); /* Compute a layout using layout engine from command line args */ extern int gvLayoutJobs(GVC_t *gvc, graph_t *g); /* Render layout into string attributes of the graph */ extern void attach_attrs(graph_t *g); /* Parse an html string */ extern char *agstrdup_html(char *s); extern int aghtmlstr(char *s); /* Render layout in a specified format to an open FILE */ extern int gvRender(GVC_t *gvc, graph_t *g, char *format, FILE *out); /* Render layout in a specified format to an open FILE */ extern int gvRenderFilename(GVC_t *gvc, graph_t *g, char *format, char *filename); /* Render layout according to -T and -o options found by gvParseArgs */ extern int gvRenderJobs(GVC_t *gvc, graph_t *g); /* Clean up layout data structures - layouts are not nestable (yet) */ extern int gvFreeLayout(GVC_t *gvc, graph_t *g); /* Clean up graphviz context */ extern int gvFreeContext(GVC_t *gvc); /* Inquire about available plugins */ /* See comment in gvc.h */ extern char** gvPluginList(GVC_t *gvc, char* kind, int* cnt, char*); DESCRIPTION libgvc provides a context for applications wishing to manipulate and render graphs. It provides a command line parsing, common rendering code, and a plugin mechanism for renderers. John Ellson (ellson@research.att.com), AT&T LIBGVC(3)