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/* This file is part of Eclat.
Copyright (C) 2012-2023 Sergey Poznyakoff.
Eclat 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.
Eclat 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 Eclat. If not, see <http://www.gnu.org/licenses/>. */
#include "libeclat.h"
#include "wordsplit.h"
#include <sysexits.h>
#include <termios.h>
#include <unistd.h>
#include <pwd.h>
char *
eclat_expand_kw(const char *input, const char **ukw)
{
struct wordsplit ws;
char *ret;
static char **defkw;
static size_t defkwsize = 6;
const char **kw;
size_t kwsize;
int i;
if (!defkw) {
uid_t uid = getuid();
struct passwd *pw = getpwuid(uid);
if (!pw)
die(EX_UNAVAILABLE,
"cannot determine user name (uid=%lu)",
(unsigned long) uid);
defkw = grecs_calloc(defkwsize, sizeof(defkw[0]));
defkw[0] = "login";
defkw[1] = grecs_strdup(pw->pw_name);
defkw[2] = "user";
defkw[3] = grecs_strdup(pw->pw_name);
defkw[4] = "home";
defkw[5] = grecs_strdup(pw->pw_dir);
}
if (ukw) {
for (i = 0; ukw[i]; i++);
kwsize = defkwsize + i + 1;
} else
kwsize = defkwsize + 1;
kw = grecs_calloc(kwsize, sizeof(kw[0]));
i = 0;
if (ukw)
for (; ukw[i]; i++)
kw[i] = ukw[i];
for (; i < defkwsize; i++)
kw[i] = defkw[i];
kw[i] = NULL;
ws.ws_env = kw;
ws.ws_error = err;
if (wordsplit(input, &ws,
WRDSF_NOSPLIT | WRDSF_NOCMD |
WRDSF_ENV | WRDSF_ENV_KV | WRDSF_WARNUNDEF | WRDSF_ERROR))
die(EX_SOFTWARE, "error expanding pattern %s: %s",
input, wordsplit_strerror(&ws));
free(kw);
ret = ws.ws_wordv[0];
ws.ws_wordv[0] = NULL;
wordsplit_free(&ws);
return ret;
}
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