mathtext PoC: loop properly

doc/man/man3/notcurses_plot.3.md

@@ -104,8 +104,8 @@ ignored.
 
 The **label** is printed in the upper left, immediately to the right of the
 topmost axis tick (if **NCPLOT_OPTION_LABELTICKSD** was used). The most
-recent sample is printed diagonally opposite from the label (if
-**NCPLOT_OPTION_PRINTSAMPLE** was used).
+recent sample is printed opposite from the label along the independent axis
+(if **NCPLOT_OPTION_PRINTSAMPLE** was used).
 
 # NOTES
 

src/poc/mathtext.cpp

@@ -1,4 +1,3 @@
-#define NCPP_EXCEPTIONS_PLEASE
 #include <cstdlib>
 #include <clocale>
 #include <memory>
@@ -64,14 +63,23 @@ auto main() -> int {
 "ᐊᓕᒍᖅᓂᕆᔭᕌᖓᒃᑯᓱᕋᙱᑦᑐᓐᓇᖅᑐ"
 ;
   std::unique_ptr<Plane> nstd(nc.get_stdplane());
-  int y, dimy, dimx;
+  int y = 0, dimy, dimx, x = 0;
   nc.get_term_dim(&dimy, &dimx);
-  nstd->set_scrolling(true);
+  const char* cptr = c;
   do{
-    if(nstd->putstr(c) <= 0){
-      return EXIT_FAILURE;
+    nstd->cursor_move(y, x);
+    int xmove = nstd->putstr(cptr);
+    nstd->get_cursor_yx(&y, &x);
+    xmove = xmove < 0 ? -xmove : xmove;
+    cptr += xmove;
+fprintf(stderr, "XM: %d diff: %ju %d/%d\n", xmove, (uintmax_t)(cptr - c), y, x);
+    if(cptr - c >= (ptrdiff_t)strlen(c)){
+      cptr = c;
+    }
+    if(x >= dimx - 1){
+      ++y;
+      x = 0;
     }
-    nstd->get_cursor_yx(&y, nullptr);
   }while(y < dimy - 1);
   const int HEIGHT = 9;
   const int WIDTH = dimx;

src/poc/wcwidth.c

@@ -12,6 +12,8 @@ int main(int argc, char **argv){
   if(argc > 1){
     while(*++argv){
       const char* arg = *argv;
+      int totalcols = 0;
+      int i = 0;
       while(*arg){
         mbstate_t mbs = {};
         wchar_t w;
@@ -21,9 +23,16 @@ int main(int argc, char **argv){
           return EXIT_FAILURE;
         }
         int width = wcwidth(w);
-        printf("w(0x%05lx): %d %lc\n", (long)w, width, w);
+        printf("w(0x%05lx): %d %lc\t", (long)w, width, w);
+        if(i++ % 4 == 3){
+          printf("\n");
+        }
+        if(width > 0){
+          totalcols += width;
+        }
         arg += conv;
       }
+      printf("\n Total width: %d\n\n", totalcols);
     }
     return EXIT_SUCCESS;
   }