1 files changed, 51 insertions, 0 deletions
diff --git a/extract/src/mem.c b/extract/src/mem.c
new file mode 100644
index 00000000..83b5032c
--- /dev/null
+++ b/extract/src/mem.c
@@ -0,0 +1,51 @@
+#include "../include/extract_alloc.h"
+
+#include "mem.h"
+
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+
+#ifdef _MSC_VER
+    #include "compat_va_copy.h"
+#endif
+
+
+void extract_bzero(void *b, size_t len)
+{
+    memset(b, 0, len);
+}
+
+int extract_vasprintf(extract_alloc_t* alloc, char** out, const char* format, va_list va)
+{
+    int n;
+    int n2;
+    va_list va2;
+    va_copy(va2, va);
+    n = vsnprintf(NULL, 0, format, va);
+    if (n < 0) return n;
+    if (extract_malloc(alloc, out, n + 1)) return -1;
+    n2 = vsnprintf(*out, n + 1, format, va2);
+    va_end(va2);
+    assert(n2 == n);
+    return n2;
+}
+
+
+int extract_asprintf(extract_alloc_t* alloc, char** out, const char* format, ...)
+{
+    va_list va;
+    int     ret;
+    va_start(va, format);
+    ret = extract_vasprintf(alloc, out, format, va);
+    va_end(va);
+    return ret;
+}
+
+int extract_strdup(extract_alloc_t* alloc, const char* s, char** o_out)
+{
+    size_t l = strlen(s) + 1;
+    if (extract_malloc(alloc, o_out, l)) return -1;
+    memcpy(*o_out, s, l);
+    return 0;
+}