Initial import

libc/testlib/formatstr.c

@@ -0,0 +1,43 @@
+/*-*- 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                              │
+│                                                                              │
+│ This program is free software; you can redistribute it and/or modify         │
+│ it under the terms of the GNU General Public License as published by         │
+│ the Free Software Foundation; version 2 of the License.                      │
+│                                                                              │
+│ This program is distributed in the hope that it will be useful, but          │
+│ WITHOUT ANY WARRANTY; without even the implied warranty of                   │
+│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU             │
+│ General Public License for more details.                                     │
+│                                                                              │
+│ You should have received a copy of the GNU General Public License            │
+│ along with this program; if not, write to the Free Software                  │
+│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA                │
+│ 02110-1301 USA                                                               │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/bits/progn.h"
+#include "libc/bits/safemacros.h"
+#include "libc/str/str.h"
+#include "libc/testlib/testlib.h"
+#include "libc/x/x.h"
+
+/**
+ * Turns string into code.
+ */
+nodiscard testonly char *testlib_formatstr(size_t cw, const void *s, int n) {
+  switch (cw) {
+    case 1:
+      if (n == -1) n = s ? strlen(s) : 0;
+      return xasprintf("%`'.*s", n, s);
+    case 2:
+      if (n == -1) n = s ? strlen16(s) : 0;
+      return xasprintf("%`'.*hs", n, s);
+    case 4:
+      if (n == -1) n = s ? wcslen(s) : 0;
+      return xasprintf("%`'.*ls", n, s);
+    default:
+      abort();
+  }
+}