1 files changed, 42 insertions, 0 deletions

diff --git a/src/shared.c b/src/shared.c
index 5e58de0..0c7c8e2 100644
--- a/src/shared.c
+++ b/src/shared.c
@@ -1,8 +1,10 @@
 #include "shared.h"
 
+#include <stdarg.h>
 #include <stdlib.h>
 #include <errno.h>
 #include <error.h>
+#include <stdio.h>
 
 void* xcalloc(size_t nmemb, size_t size) {
     void *mem = calloc(nmemb, size);
@@ -17,4 +19,44 @@ void* xcalloc(size_t nmemb, size_t size) {
     
 
     return mem;
+}
+
+void* xreallocarray(void *ptr, size_t nmemb, size_t size) {
+    void *mem = reallocarray(ptr, nmemb, size);
+    if(mem == NULL) {
+        #if defined ___VXGG___XCALLOC_EXIT_ON_ERROR___ && ___VXGG___XCALLOC_EXIT_ON_ERROR___ > 0
+            error(1, errno, "<xreallocarray> Could not allocate memory");
+
+        #endif
+
+        abort();
+    }
+
+    return mem;
+}
+
+int vsaprintf(char **str, const char *format, va_list ap) {
+    va_list ap2;
+    va_copy(ap2, ap);
+
+    int length = vsnprintf(NULL, 0, format, ap2) + 1; // + 1 because sprintf does not count the null byte
+    char *temp = reallocarray(*str, length, sizeof(char));
+    if(temp == NULL)
+        return -1;
+
+    int ret = vsnprintf(temp, length, format, ap);
+    *str = temp;
+
+    va_end(ap2);
+    return ret;
+}
+
+int saprintf(char **str, const char *format, ...) {
+    va_list ap;
+    va_start(ap, format);
+
+    int ret = vsaprintf(str, format, ap);
+
+    va_end(ap);
+    return ret;
 }
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