clean up yesterday's hacks + functions in type system

1 files changed, 22 insertions, 0 deletions

diff --git a/ccc.c b/ccc.c
index ca4eba1..c1b1540 100644
--- a/ccc.c
+++ b/ccc.c
@@ -1,6 +1,7 @@
 #include "ccc.h"
 #include <stdlib.h>
 #include <stdio.h>
+#include <stdarg.h>
 
 void* ccc_alloc(integral_t sz) {
     void* ptr = calloc(1, sz);
@@ -10,3 +11,24 @@ void* ccc_alloc(integral_t sz) {
     }
     return ptr;
 }
+
+char* ccc_sprintf(const char* format, ...) {
+    va_list args;
+
+    va_start(args, format);
+    int req_sz = vsnprintf(NULL, 0, format, args);
+    va_end(args);
+
+    if (req_sz < 0) {
+        fprintf(stderr, "ccc: formatting error\n");
+        exit(1);
+    }
+    req_sz += 1; /* null terminated */
+    char* buffer = ccc_alloc(req_sz);
+
+    va_start(args, format);
+    vsnprintf(buffer, req_sz, format, args);
+    va_end(args);
+
+    return buffer;
+}