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-rw-r--r--tests/envtest.c209
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diff --git a/tests/envtest.c b/tests/envtest.c
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+/* Environment test program for GNU Pies.
+ Copyright (C) 2019 Sergey Poznyakoff
+
+ GNU Pies 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, or (at your option)
+ any later version.
+
+ GNU Pies 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 GNU Pies. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <ctype.h>
+#include <envop.h>
+#include <wordsplit.h>
+
+static int
+envcmp (void const *a, void const *b)
+{
+ char const *as = *(char const **)a;
+ char const *bs = *(char const **)b;
+ int c;
+
+ while (*as && *bs)
+ {
+ c = *as - *bs;
+ if (c || *as == '=' || *bs == '=')
+ break;
+ as++;
+ bs++;
+ }
+ return c;
+}
+
+static void
+sortenv (char **env)
+{
+ size_t n;
+ for (n = 0; env[n]; n++)
+ ;
+ qsort (env, n, sizeof (env[0]), envcmp);
+}
+
+static void
+printenv (char **env)
+{
+ size_t i;
+ for (i = 0; env[i]; i++)
+ {
+ char *p = env[i];
+ while (*p)
+ {
+ fputc (*p, stdout);
+ if (*p++ == '=')
+ break;
+ }
+ if (*p)
+ {
+ int c;
+ fputc ('"', stdout);
+ while ((c = *p++) != 0)
+ {
+ int c1;
+ if (isascii (c) && isprint (c) && c != '\\' && c != '"')
+ fputc (c, stdout);
+ else if ((c1 = wordsplit_c_quote_char (c)))
+ {
+ fputc ('\\', stdout);
+ fputc (c1, stdout);
+ }
+ }
+ fputc ('"', stdout);
+ }
+ fputc ('\n', stdout);
+ }
+}
+
+char *defenv[] = {
+ "PATH=/usr/local/bin:/usr/bin:/bin",
+ "HOME=/home/user",
+ "USER=user",
+ "LOGIN=user",
+ "PWD=/home",
+ "LC_ALL=C",
+ "LC_CTYPE=C",
+ "LC_MESSAGES=C",
+ "LC_NUMERIC=C",
+ NULL
+};
+
+extern char **environ;
+
+int
+main (int argc, char **argv)
+{
+ envop_t *envop = NULL;
+ int opcode = envop_set;
+ environ_t *env = NULL;
+
+ if (argc > 1)
+ {
+ if (strcmp (argv[1], "-clone") == 0)
+ {
+ env = environ_create (environ);
+ argc--;
+ argv++;
+ }
+ else if (strcmp (argv[1], "-null") == 0)
+ {
+ env = environ_create (NULL);
+ argc--;
+ argv++;
+ }
+ }
+
+ if (!env)
+ env = environ_create (defenv);
+
+ if (!env)
+ {
+ perror ("environ_create");
+ abort ();
+ }
+
+ while (--argc)
+ {
+ char *a = *++argv;
+
+ if (strcmp (a, "-set") == 0)
+ opcode = envop_set;
+ else if (strcmp (a, "-unset") == 0)
+ opcode = envop_unset;
+ else if (strcmp (a, "-keep") == 0)
+ opcode = envop_keep;
+ else if (strcmp (a, "-clear") == 0)
+ {
+ int rc = envop_entry_add (&envop, envop_clear, NULL, NULL);
+ if (rc)
+ {
+ perror ("envop_entry_add");
+ return 1;
+ }
+ }
+ else if (strcmp (a, "-exec") == 0)
+ {
+ --argc;
+ ++argv;
+ if (argc == 0)
+ {
+ fprintf (stderr, "program name required after -exec\n");
+ return 1;
+ }
+ break;
+ }
+ else if (a[0] == '-')
+ {
+ fprintf (stderr, "unrecognized option: %s\n", a);
+ return 1;
+ }
+ else
+ {
+ int rc;
+ char *p = strchr (a, '=');
+
+ if (p)
+ *p++ = 0;
+ rc = envop_entry_add (&envop, opcode, a, p);
+
+ if (rc)
+ {
+ perror ("envop_entry_add");
+ return 1;
+ }
+ }
+ }
+
+ if (envop_exec (envop, env))
+ {
+ perror ("envop_exec");
+ return 1;
+ }
+
+ if (argc)
+ {
+ environ = environ_ptr (env);
+ execvp (argv[0], argv);
+ perror ("execvp");
+ abort ();
+ }
+
+ sortenv (env->env_base);
+ printenv (env->env_base);
+ return 0;
+}
+
+
+

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