allow tyui to format text

1 files changed, 25 insertions, 0 deletions

diff --git a/teensy/teensy_context.c b/teensy/teensy_context.c
index 91b9b90..ad7c79e 100644
--- a/teensy/teensy_context.c
+++ b/teensy/teensy_context.c
@@ -1,6 +1,7 @@
 #include "teensy_context.h"
 
 #include <math.h>
+#include <stdarg.h>
 #include <time.h>
 
 #include "teensy_platform.h"
@@ -99,3 +100,27 @@ void ty_sleep(uint64_t ms)
     ts.tv_nsec = (ms % 1000) * 1000000;
     nanosleep(&ts, NULL);
 }
+
+char *ty_format_args(const char *fmt, va_list list)
+{
+    va_list args;
+    va_copy(args, list);
+    int len = vsnprintf(NULL, 0, fmt, args);
+    char *text = ty_talloc(sizeof(char) * (len + 1));
+    va_end(args);
+
+    va_copy(args, list);
+    vsnprintf(text, len + 1, fmt, args);
+    va_end(args);
+
+    return text;
+}
+
+char *ty_format(const char *fmt, ...)
+{
+    va_list args;
+    va_start(args, fmt);
+    char *text = ty_format_args(fmt, args);
+    va_end(args);
+    return text;
+}