Adding upstream version 8.32.upstream/8.32upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 190 insertions, 0 deletions

diff --git a/src/basename.c b/src/basename.c
new file mode 100644
index 0000000..d4a2f43
--- /dev/null
+++ b/src/basename.c
@@ -0,0 +1,190 @@
+/* basename -- strip directory and suffix from file names
+   Copyright (C) 1990-2020 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 <getopt.h>
+#include <stdio.h>
+#include <sys/types.h>
+
+#include "system.h"
+#include "error.h"
+#include "quote.h"
+
+/* The official name of this program (e.g., no 'g' prefix).  */
+#define PROGRAM_NAME "basename"
+
+#define AUTHORS proper_name ("David MacKenzie")
+
+static struct option const longopts[] =
+{
+  {"multiple", no_argument, NULL, 'a'},
+  {"suffix", required_argument, NULL, 's'},
+  {"zero", no_argument, NULL, 'z'},
+  {GETOPT_HELP_OPTION_DECL},
+  {GETOPT_VERSION_OPTION_DECL},
+  {NULL, 0, NULL, 0}
+};
+
+void
+usage (int status)
+{
+  if (status != EXIT_SUCCESS)
+    emit_try_help ();
+  else
+    {
+      printf (_("\
+Usage: %s NAME [SUFFIX]\n\
+  or:  %s OPTION... NAME...\n\
+"),
+              program_name, program_name);
+      fputs (_("\
+Print NAME with any leading directory components removed.\n\
+If specified, also remove a trailing SUFFIX.\n\
+"), stdout);
+
+      emit_mandatory_arg_note ();
+
+      fputs (_("\
+  -a, --multiple       support multiple arguments and treat each as a NAME\n\
+  -s, --suffix=SUFFIX  remove a trailing SUFFIX; implies -a\n\
+  -z, --zero           end each output line with NUL, not newline\n\
+"), stdout);
+      fputs (HELP_OPTION_DESCRIPTION, stdout);
+      fputs (VERSION_OPTION_DESCRIPTION, stdout);
+      printf (_("\
+\n\
+Examples:\n\
+  %s /usr/bin/sort          -> \"sort\"\n\
+  %s include/stdio.h .h     -> \"stdio\"\n\
+  %s -s .h include/stdio.h  -> \"stdio\"\n\
+  %s -a any/str1 any/str2   -> \"str1\" followed by \"str2\"\n\
+"),
+              program_name, program_name, program_name, program_name);
+      emit_ancillary_info (PROGRAM_NAME);
+    }
+  exit (status);
+}
+
+/* Remove SUFFIX from the end of NAME if it is there, unless NAME
+   consists entirely of SUFFIX.  */
+
+static void
+remove_suffix (char *name, const char *suffix)
+{
+  char *np;
+  const char *sp;
+
+  np = name + strlen (name);
+  sp = suffix + strlen (suffix);
+
+  while (np > name && sp > suffix)
+    if (*--np != *--sp)
+      return;
+  if (np > name)
+    *np = '\0';
+}
+
+/* Perform the basename operation on STRING.  If SUFFIX is non-NULL, remove
+   the trailing SUFFIX.  Finally, output the result string.  */
+
+static void
+perform_basename (const char *string, const char *suffix, bool use_nuls)
+{
+  char *name = base_name (string);
+  strip_trailing_slashes (name);
+
+  /* Per POSIX, 'basename // /' must return '//' on platforms with
+     distinct //.  On platforms with drive letters, this generalizes
+     to making 'basename c: :' return 'c:'.  This rule is captured by
+     skipping suffix stripping if base_name returned an absolute path
+     or a drive letter (only possible if name is a file-system
+     root).  */
+  if (suffix && IS_RELATIVE_FILE_NAME (name) && ! FILE_SYSTEM_PREFIX_LEN (name))
+    remove_suffix (name, suffix);
+
+  fputs (name, stdout);
+  putchar (use_nuls ? '\0' : '\n');
+  free (name);
+}
+
+int
+main (int argc, char **argv)
+{
+  bool multiple_names = false;
+  bool use_nuls = false;
+  const char *suffix = NULL;
+
+  initialize_main (&argc, &argv);
+  set_program_name (argv[0]);
+  setlocale (LC_ALL, "");
+  bindtextdomain (PACKAGE, LOCALEDIR);
+  textdomain (PACKAGE);
+
+  atexit (close_stdout);
+
+  while (true)
+    {
+      int c = getopt_long (argc, argv, "+as:z", longopts, NULL);
+
+      if (c == -1)
+        break;
+
+      switch (c)
+        {
+        case 's':
+          suffix = optarg;
+          /* -s implies -a, so...  */
+          FALLTHROUGH;
+
+        case 'a':
+          multiple_names = true;
+          break;
+
+        case 'z':
+          use_nuls = true;
+          break;
+
+        case_GETOPT_HELP_CHAR;
+        case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
+
+        default:
+          usage (EXIT_FAILURE);
+        }
+    }
+
+  if (argc < optind + 1)
+    {
+      error (0, 0, _("missing operand"));
+      usage (EXIT_FAILURE);
+    }
+
+  if (!multiple_names && optind + 2 < argc)
+    {
+      error (0, 0, _("extra operand %s"), quote (argv[optind + 2]));
+      usage (EXIT_FAILURE);
+    }
+
+  if (multiple_names)
+    {
+      for (; optind < argc; optind++)
+        perform_basename (argv[optind], suffix, use_nuls);
+    }
+  else
+    perform_basename (argv[optind],
+                      optind + 2 == argc ? argv[optind + 1] : NULL, use_nuls);
+
+  return EXIT_SUCCESS;
+}