1 files changed, 44 insertions, 0 deletions
diff --git a/stdio/tmpfile.c b/stdio/tmpfile.c
new file mode 100644
index 0000000..b2197e4
--- /dev/null
+++ b/stdio/tmpfile.c
@@ -0,0 +1,44 @@
+/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
+│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ Copyright 2020 Justine Alexandra Roberts Tunney                              │
+│                                                                              │
+│ Permission to use, copy, modify, and/or distribute this software for         │
+│ any purpose with or without fee is hereby granted, provided that the         │
+│ above copyright notice and this permission notice appear in all copies.      │
+│                                                                              │
+│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
+│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
+│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
+│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
+│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
+│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
+│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
+│ PERFORMANCE OF THIS SOFTWARE.                                                │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/bits/safemacros.internal.h"
+#include "libc/calls/calls.h"
+#include "libc/fmt/fmt.h"
+#include "libc/macros.internal.h"
+#include "libc/runtime/runtime.h"
+#include "libc/stdio/stdio.h"
+#include "libc/stdio/temp.h"
+#include "libc/str/str.h"
+
+/**
+ * Creates a temporary file.
+ *
+ * @see mkostempsm(), kTmpPath
+ */
+FILE *tmpfile(void) {
+  int fd;
+  char *tmp, *sep, tpl[PATH_MAX];
+  tmp = firstnonnull(getenv("TMPDIR"), kTmpPath);
+  sep = !isempty(tmp) && !endswith(tmp, "/") ? "/" : "";
+  if (snprintf(tpl, PATH_MAX, "%s%stmp.XXXXXX", tmp, sep) < PATH_MAX) {
+    if ((fd = mkostemps(tpl, 0, 0)) != -1) {
+      return fdopen(fd, "w+");
+    }
+  }
+  return NULL;
+}