Adding upstream version 9.1.upstream/9.1upstream

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

1 files changed, 154 insertions, 0 deletions

diff --git a/src/printenv.c b/src/printenv.c
new file mode 100644
index 0000000..0b178be
--- /dev/null
+++ b/src/printenv.c
@@ -0,0 +1,154 @@
+/* printenv -- print all or part of environment
+   Copyright (C) 1989-2022 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/>.  */
+
+/* Usage: printenv [variable...]
+
+   If no arguments are given, print the entire environment.
+   If one or more variable names are given, print the value of
+   each one that is set, and nothing for ones that are not set.
+
+   Exit status:
+   0 if all variables specified were found
+   1 if not
+   2 if some other error occurred
+
+   David MacKenzie and Richard Mlynarik */
+
+#include <config.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <getopt.h>
+
+#include "system.h"
+
+/* Exit status for syntax errors, etc.  */
+enum { PRINTENV_FAILURE = 2 };
+
+/* The official name of this program (e.g., no 'g' prefix).  */
+#define PROGRAM_NAME "printenv"
+
+#define AUTHORS \
+  proper_name ("David MacKenzie"), \
+  proper_name ("Richard Mlynarik")
+
+static struct option const longopts[] =
+{
+  {"null", no_argument, NULL, '0'},
+  {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 [OPTION]... [VARIABLE]...\n\
+Print the values of the specified environment VARIABLE(s).\n\
+If no VARIABLE is specified, print name and value pairs for them all.\n\
+\n\
+"),
+              program_name);
+      fputs (_("\
+  -0, --null     end each output line with NUL, not newline\n\
+"), stdout);
+      fputs (HELP_OPTION_DESCRIPTION, stdout);
+      fputs (VERSION_OPTION_DESCRIPTION, stdout);
+      printf (USAGE_BUILTIN_WARNING, PROGRAM_NAME);
+      emit_ancillary_info (PROGRAM_NAME);
+    }
+  exit (status);
+}
+
+int
+main (int argc, char **argv)
+{
+  char **env;
+  char *ep, *ap;
+  int i;
+  bool ok;
+  int optc;
+  bool opt_nul_terminate_output = false;
+
+  initialize_main (&argc, &argv);
+  set_program_name (argv[0]);
+  setlocale (LC_ALL, "");
+  bindtextdomain (PACKAGE, LOCALEDIR);
+  textdomain (PACKAGE);
+
+  initialize_exit_failure (PRINTENV_FAILURE);
+  atexit (close_stdout);
+
+  while ((optc = getopt_long (argc, argv, "+iu:0", longopts, NULL)) != -1)
+    {
+      switch (optc)
+        {
+        case '0':
+          opt_nul_terminate_output = true;
+          break;
+        case_GETOPT_HELP_CHAR;
+        case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
+        default:
+          usage (PRINTENV_FAILURE);
+        }
+    }
+
+  if (optind >= argc)
+    {
+      for (env = environ; *env != NULL; ++env)
+        printf ("%s%c", *env, opt_nul_terminate_output ? '\0' : '\n');
+      ok = true;
+    }
+  else
+    {
+      int matches = 0;
+
+      for (i = optind; i < argc; ++i)
+        {
+          bool matched = false;
+
+          /* 'printenv a=b' is silent, even if 'a=b=c' is in environ.  */
+          if (strchr (argv[i], '='))
+            continue;
+
+          for (env = environ; *env; ++env)
+            {
+              ep = *env;
+              ap = argv[i];
+              while (*ep != '\0' && *ap != '\0' && *ep++ == *ap++)
+                {
+                  if (*ep == '=' && *ap == '\0')
+                    {
+                      printf ("%s%c", ep + 1,
+                              opt_nul_terminate_output ? '\0' : '\n');
+                      matched = true;
+                      break;
+                    }
+                }
+            }
+
+          matches += matched;
+        }
+
+      ok = (matches == argc - optind);
+    }
+
+  return ok ? EXIT_SUCCESS : EXIT_FAILURE;
+}