publicize nccapabilities structure, add ncdirect_capabilities() #1768

include/notcurses/direct.h

@@ -242,6 +242,9 @@ API const char* ncdirect_detected_terminal(const struct ncdirect* n)
 API bool ncdirect_canopen_images(const struct ncdirect* n)
   __attribute__ ((nonnull (1)));
 
+API const nccapabilities* ncdirect_capabilities(const struct ncdirect* n)
+  __attribute__ ((nonnull (1)));
+
 // Is our encoding UTF-8? Requires LANG being set to a UTF8 locale.
 API bool ncdirect_canutf8(const struct ncdirect* n)
   __attribute__ ((nonnull (1)));

include/notcurses/notcurses.h

@@ -1236,6 +1236,12 @@ API bool ncplane_translate_abs(const struct ncplane* n, int* RESTRICT y, int* RE
 API bool ncplane_set_scrolling(struct ncplane* n, bool scrollp);
 
 // Capabilities
+// terminal capabilities exported to the user
+typedef struct nccapabilities {
+  // assigned based off nl_langinfo() in notcurses_core_init()
+  bool utf8;              // are we using utf-8 encoding? from nl_langinfo(3)
+  bool can_change_colors; // can we change the palette? terminfo ccc capability
+} nccapabilities;
 
 // Returns a 16-bit bitmask of supported curses-style attributes
 // (NCSTYLE_UNDERLINE, NCSTYLE_BOLD, etc.) The attribute is only

src/lib/direct.c

@@ -1374,3 +1374,7 @@ unsigned ncdirect_supported_styles(const ncdirect* nc){
 const char* ncdirect_detected_terminal(const ncdirect* nc){
   return nc->tcache.termname;
 }
+
+const nccapabilities* ncdirect_capabilities(const ncdirect* n){
+  return &n->tcache.caps;
+}

src/lib/termdesc.h

@@ -86,13 +86,6 @@ typedef struct ncinputlayer {
   struct esctrie* inputescapes; // trie of input escapes -> ncspecial_keys
 } ncinputlayer;
 
-// terminal capabilities exported to the user
-typedef struct nccapabilities {
-  // assigned based off nl_langinfo() in notcurses_core_init()
-  bool utf8;              // are we using utf-8 encoding? from nl_langinfo(3)
-  bool can_change_colors; // can we change the palette? terminfo ccc capability
-} nccapabilities;
-
 // terminal interface description. most of these are acquired from terminfo(5)
 // (using a database entry specified by TERM). some are determined via
 // heuristics based off terminal interrogation or the TERM environment