textplay: read stdin, play to plane with ncplane_puttext()

src/poc/textplay.c

@@ -0,0 +1,71 @@
+#include <stdlib.h>
+#include <notcurses/notcurses.h>
+
+static const uint32_t LOWCOLOR = 0x004080;
+static const uint32_t HICOLOR = 0x00ff80;
+static const uint32_t NANOSEC = 1000000000ull / 600; // 600 cps
+#define MARGIN 4
+
+static struct notcurses*
+init(void){
+  struct notcurses_options opts = {
+    .margin_t = MARGIN,
+    .margin_r = MARGIN,
+    .margin_b = MARGIN,
+    .margin_l = MARGIN,
+  };
+  struct notcurses* nc = notcurses_init(&opts, stdout);
+  return nc;
+}
+
+static int
+colorize(struct ncplane* n){
+  (void)n;
+  return 0;
+}
+
+static int
+textplay(struct notcurses* nc){
+  char* buf = NULL;
+  size_t buflen = 1;
+  int c;
+  struct ncplane* stdn = notcurses_stdplane(nc);
+  ncplane_set_scrolling(stdn, true);
+  while((c = getc(stdin)) != EOF){
+    char* tmp = realloc(buf, buflen + 1);
+    if(tmp == NULL){
+      free(buf);
+      return -1;
+    }
+    buf = tmp;
+    buf[buflen - 1] = c;
+    buf[buflen++] = '\0';
+    ncplane_home(stdn);
+    int pt = ncplane_puttext(stdn, 0, NCALIGN_LEFT, buf, NULL);
+    if(pt < 0){
+      free(buf);
+      return -1;
+    }
+    if(notcurses_render(nc)){
+      free(buf);
+      return -1;
+    }
+    struct timespec ts = {
+      .tv_sec = 0, .tv_nsec = NANOSEC,
+    };
+    clock_nanosleep(CLOCK_MONOTONIC, 0, &ts, NULL);
+  }
+  return 0;
+}
+
+int main(void){
+  struct notcurses* nc = init();
+  if(nc == NULL){
+    return EXIT_FAILURE;
+  }
+  textplay(nc);
+  if(notcurses_stop(nc)){
+    return EXIT_FAILURE;
+  }
+  return EXIT_SUCCESS;
+}