/* Test the gnulib dirname module.
   Copyright (C) 2005-2007, 2009-2026 Free Software Foundation, Inc.

   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, either version 3 of the License, or
   (at your option) any later version.

   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, see <https://www.gnu.org/licenses/>.  */

#include <config.h>

#include "dirname.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct test {
  const char *name;     /* Name under test.  */
  const char *dir;      /* dir_name (name).  */
  const char *last;     /* last_component (name).  */
  const char *base;     /* base_name (name).  */
  const char *stripped; /* name after strip_trailing_slashes (name).  */
  bool modified;        /* result of strip_trailing_slashes (name).  */
  bool absolute;        /* IS_ABSOLUTE_FILE_NAME (name).  */
};

static struct test tests[] = {
  {"d/f",       "d",    "f",    "f",    "d/f",  false,  false},
  {"/d/f",      "/d",   "f",    "f",    "/d/f", false,  true},
  {"d/f/",      "d",    "f/",   "f/",   "d/f",  true,   false},
  {"d/f//",     "d",    "f//",  "f/",   "d/f",  true,   false},
  {"f",         ".",    "f",    "f",    "f",    false,  false},
  {"/",         "/",    "",     "/",    "/",    false,  true},
#if DOUBLE_SLASH_IS_DISTINCT_ROOT
  {"//",        "//",   "",     "//",   "//",   false,  true},
  {"//d",       "//",   "d",    "d",    "//d",  false,  true},
#else
  {"//",        "/",    "",     "/",    "/",    true,   true},
  {"//d",       "/",    "d",    "d",    "//d",  false,  true},
#endif
  {"///",       "/",    "",     "/",    "/",    true,   true},
  {"///a///",   "/",    "a///", "a/",   "///a", true,   true},
  /* POSIX requires dirname("") and basename("") to both return ".",
     but dir_name and base_name are defined differently.  */
  {"",          ".",    "",     "",     "",     false,  false},
  {".",         ".",    ".",    ".",    ".",    false,  false},
  {"..",        ".",    "..",   "..",   "..",   false,  false},
#if ISSLASH ('\\')
  {"a\\",       ".",    "a\\",  "a\\",  "a",    true,   false},
  {"a\\b",      "a",    "b",    "b",    "a\\b", false,  false},
  {"\\",        "\\",   "",     "\\",   "\\",   false,  true},
  {"\\/\\",     "\\",   "",     "\\",   "\\",   true,   true},
  {"\\\\/",     "\\",   "",     "\\",   "\\",   true,   true},
  {"\\//",      "\\",   "",     "\\",   "\\",   true,   true},
  {"//\\",      "/",    "",     "/",    "/",    true,   true},
#else
  {"a\\",       ".",    "a\\",  "a\\",  "a\\",  false,  false},
  {"a\\b",      ".",    "a\\b", "a\\b", "a\\b", false,  false},
  {"\\",        ".",    "\\",   "\\",   "\\",   false,  false},
  {"\\/\\",     "\\",   "\\",   "\\",   "\\/\\",false,  false},
  {"\\\\/",     ".",    "\\\\/","\\\\/","\\\\", true,   false},
  {"\\//",      ".",    "\\//", "\\/",  "\\",   true,   false},
# if DOUBLE_SLASH_IS_DISTINCT_ROOT
  {"//\\",      "//",   "\\",   "\\",   "//\\", false,  true},
# else
  {"//\\",      "/",    "\\",   "\\",   "//\\", false,  true},
# endif
#endif
#if ISSLASH ('\\')
# if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
  {"c:",        "c:",   "",     "c:",   "c:",   false,  false},
  {"c:/",       "c:/",  "",     "c:/",  "c:/",  false,  true},
  {"c://",      "c:/",  "",     "c:/",  "c:/",  true,   true},
  {"c:/d",      "c:/",  "d",    "d",    "c:/d", false,  true},
  {"c://d",     "c:/",  "d",    "d",    "c://d",false,  true},
  {"c:/d/",     "c:/",  "d/",   "d/",   "c:/d", true,   true},
  {"c:/d/f",    "c:/d", "f",    "f",    "c:/d/f",false, true},
  {"c:d",       "c:.",  "d",    "d",    "c:d",  false,  false},
  {"c:d/",      "c:.",  "d/",   "d/",   "c:d",  true,   false},
  {"c:d/f",     "c:d",  "f",    "f",    "c:d/f",false,  false},
  {"a:b:c",     "a:.",  "b:c",  "./b:c","a:b:c",false,  false},
  {"a/b:c",     "a",    "b:c",  "./b:c","a/b:c",false,  false},
  {"a/b:c/",    "a",    "b:c/", "./b:c/","a/b:c",true,  false},
# else /* ! FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE */
  {"c:",        "c:",   "",     "c:",   "c:",   false,  true},
  {"c:/",       "c:",   "",     "c:",   "c:",   true,   true},
  {"c://",      "c:",   "",     "c:",   "c:",   true,   true},
  {"c:/d",      "c:",   "d",    "d",    "c:/d", false,  true},
  {"c://d",     "c:",   "d",    "d",    "c://d",false,  true},
  {"c:/d/",     "c:",   "d/",   "d/",   "c:/d", true,   true},
  {"c:/d/f",    "c:/d", "f",    "f",    "c:/d/f",false, true},
  {"c:d",       "c:",   "d",    "d",    "c:d",  false,  true},
  {"c:d/",      "c:",   "d/",   "d/",   "c:d",  true,   true},
  {"c:d/f",     "c:d",  "f",    "f",    "c:d/f",false,  true},
  {"a:b:c",     "a:",   "b:c",  "./b:c","a:b:c",false,  true},
  {"a/b:c",     "a",    "b:c",  "./b:c","a/b:c",false,  false},
  {"a/b:c/",    "a",    "b:c/", "./b:c/","a/b:c",true,  false},
# endif
#else /* ! ISSLASH ('\\') */
  {"c:",        ".",    "c:",   "c:",   "c:",   false,  false},
  {"c:/",       ".",    "c:/",  "c:/",  "c:",   true,   false},
  {"c://",      ".",    "c://", "c:/",  "c:",   true,   false},
  {"c:/d",      "c:",   "d",    "d",    "c:/d", false,  false},
  {"c://d",     "c:",   "d",    "d",    "c://d",false,  false},
  {"c:/d/",     "c:",   "d/",   "d/",   "c:/d", true,   false},
  {"c:/d/f",    "c:/d", "f",    "f",    "c:/d/f",false, false},
  {"c:d",       ".",    "c:d",  "c:d",  "c:d",  false,  false},
  {"c:d/",      ".",    "c:d/", "c:d/", "c:d",  true,   false},
  {"c:d/f",     "c:d",  "f",    "f",    "c:d/f",false,  false},
  {"a:b:c",     ".",    "a:b:c","a:b:c","a:b:c",false,  false},
  {"a/b:c",     "a",    "b:c",  "b:c",  "a/b:c",false,  false},
  {"a/b:c/",    "a",    "b:c/", "b:c/", "a/b:c",true,   false},
#endif
  {"1:",        ".",    "1:",   "1:",   "1:",   false,  false},
  {"1:/",       ".",    "1:/",  "1:/",  "1:",   true,   false},
  {"/:",        "/",    ":",    ":",    "/:",   false,  true},
  {"/:/",       "/",    ":/",   ":/",   "/:",   true,   true},
  /* End sentinel.  */
  {NULL,        NULL,   NULL,   NULL,   NULL,   false,  false}
};

int
main (void)
{
  bool ok = true;

  for (struct test *t = tests; t->name; t++)
    {
      char *dir = dir_name (t->name);
      int dirlen = dir_len (t->name);
      char *last = last_component (t->name);
      char *base = base_name (t->name);
      int baselen = base_len (base);
      char *stripped = strdup (t->name);
      bool modified = strip_trailing_slashes (stripped);
      bool absolute = IS_ABSOLUTE_FILE_NAME (t->name);
      if (! (strcmp (dir, t->dir) == 0
             && (dirlen == strlen (dir)
                 || (dirlen + 1 == strlen (dir) && dir[dirlen] == '.'))))
        {
          ok = false;
          printf ("dir_name '%s': got '%s' len %d,"
                  " expected '%s' len %lu\n",
                  t->name, dir, dirlen,
                  t->dir, (unsigned long) strlen (t->dir));
        }
      if (strcmp (last, t->last))
        {
          ok = false;
          printf ("last_component '%s': got '%s', expected '%s'\n",
                  t->name, last, t->last);
        }
      if (! (strcmp (base, t->base) == 0
             && (baselen == strlen (base)
                 || (baselen + 1 == strlen (base)
                     && ISSLASH (base[baselen])))))
        {
          ok = false;
          printf ("base_name '%s': got '%s' len %d,"
                  " expected '%s' len %lu\n",
                  t->name, base, baselen,
                  t->base, (unsigned long) strlen (t->base));
        }
      if (strcmp (stripped, t->stripped) || modified != t->modified)
        {
          ok = false;
          printf ("strip_trailing_slashes '%s': got %s %s, expected %s %s\n",
                  t->name, stripped, modified ? "changed" : "unchanged",
                  t->stripped, t->modified ? "changed" : "unchanged");
        }
      if (t->absolute != absolute)
        {
          ok = false;
          printf ("'%s': got %s, expected %s\n", t->name,
                  absolute ? "absolute" : "relative",
                  t->absolute ? "absolute" : "relative");
        }
      free (dir);
      free (base);
      free (stripped);
    }
  return ok ? 0 : 1;
}
