Initial import

libc/testlib/showerror_.c

@@ -0,0 +1,90 @@
+/*-*- 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/safemacros.h"
+#include "libc/calls/internal.h"
+#include "libc/errno.h"
+#include "libc/fmt/fmt.h"
+#include "libc/log/internal.h"
+#include "libc/log/log.h"
+#include "libc/math.h"
+#include "libc/nt/runtime.h"
+#include "libc/runtime/runtime.h"
+#include "libc/stdio/stdio.h"
+#include "libc/testlib/testlib.h"
+
+STATIC_YOINK("isfdkind");
+
+const char *testlib_showerror_errno;
+const char *testlib_showerror_file;
+const char *testlib_showerror_func;
+const char *testlib_showerror_isfatal;
+const char *testlib_showerror_macro;
+const char *testlib_showerror_symbol;
+
+testonly void testlib_showerror_(int line, const char *wantcode,
+                                 const char *gotcode, char *FREED_want,
+                                 char *FREED_got, const char *fmt, ...) {
+  va_list va;
+
+  getpid$sysv(); /* make strace easier to read */
+  getpid$sysv();
+
+  fflush(stdout);
+  fflush(stderr);
+
+  /* TODO(jart): Pay off tech debt re duplication */
+
+  fprintf(stderr, "%s%s%s%s:%s:%d%s: %s(%s)\n\t%s(%s", RED2, "error", UNBOLD,
+          BLUE1, testlib_showerror_file, line, RESET, testlib_showerror_func,
+          g_fixturename, testlib_showerror_macro, wantcode);
+
+  if (wantcode) {
+    fprintf(stderr,
+            ", %s)\n"
+            "\t\t%s %s %s\n"
+            "\t\t%s %s\n",
+            gotcode, "want", FREED_want, testlib_showerror_symbol, " got",
+            FREED_got);
+  } else {
+    fprintf(stderr,
+            ", %s)\n"
+            "\t\t→ %s%s\n",
+            gotcode, testlib_showerror_symbol, FREED_want);
+  }
+
+  if (!isempty(fmt)) {
+    fputc('\t', stderr);
+    va_start(va, fmt);
+    vfprintf(stderr, fmt, va);
+    va_end(va);
+    fputc('\n', stderr);
+  }
+
+  fprintf(stderr,
+          "\t%s%s\n"
+          "\t%s%s\n",
+          SUBTLE, strerror(errno), program_invocation_name, RESET);
+
+  free_s(&FREED_want);
+  free_s(&FREED_got);
+
+  ++g_testlib_failed;
+  if (testlib_showerror_isfatal) testlib_abort();
+}