1 files changed, 40 insertions, 0 deletions
diff --git a/newlib/libc/argz/envz_strip.c b/newlib/libc/argz/envz_strip.c
new file mode 100644
index 000000000..f190befe8
--- /dev/null
+++ b/newlib/libc/argz/envz_strip.c
@@ -0,0 +1,40 @@
+/* Copyright (C) 2002 by  Red Hat, Incorporated. All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software
+ * is freely granted, provided that this notice is preserved.
+ */
+
+#include <errno.h>
+#include <sys/types.h>
+#include <string.h>
+#include <stdlib.h>
+#include <argz.h>
+#include <envz.h>
+
+void
+envz_strip (char **envz, size_t *envz_len)
+{
+  char *entry = 0;
+  int len = 0;
+  int null_found = 0;
+
+  while((entry = argz_next(*envz, *envz_len, entry)))
+    {
+      if(!strchr(entry, '='))
+        {
+          null_found = 1;
+          len = strlen(entry) + 1;
+          /* Make sure this is not the last entry in envz. If it is, it
+           will be chopped off by the realloc anyway.*/
+          if(*envz + *envz_len != entry + len - 1)
+            {
+              memmove(entry, entry + len, *envz + *envz_len - entry - len);
+            }
+          *envz_len -= len;
+        }
+    }
+  if(null_found)
+    {
+      *envz = (char *)realloc(*envz, *envz_len);
+    }
+}