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/* This file is part of Mailfromd. -*- c -*-
Copyright (C) 2008, 2010-2011, 2015-2017 Sergey Poznyakoff
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, 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 <http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <stdlib.h>
#include <getopt.h>
MF_VAR(optarg, STRING);
MF_VAR(optind, NUMBER);
MF_VAR(opterr, NUMBER);
MF_VAR(optopt, STRING);
MF_DEFUN_VARARGS(getopt, STRING, NUMBER argc, NUMBER argoff)
{
int rc;
int long_idx;
char s[2] = { 0, 0 };
static char xargc;
static char **xargv;
static struct option *option;
static char *optstr;
static char *loptstr;
if (argc) {
size_t i, n;
size_t serial = 256;
xargc = argc + 1;
xargv = mu_calloc(xargc+1, sizeof(xargv[0]));
xargv[0] = script_file;
for (i = 0; i < argc; i++)
xargv[i+1] = MF_VASTRING(argoff + i);
xargv[i+1] = NULL;
n = MF_VA_COUNT();
if (n) {
size_t i, j;
size_t len;
char *str;
size_t size, lsize, lcnt;
MF_VA_START();
size = lsize = lcnt = 0;
for (i = 0; i < n; i++) {
MF_VA_ARG(i, STRING, str);
len = strcspn(str, "|");
size += len;
str += len;
if (*str) {
lcnt++;
lsize += strlen(str);
}
}
optstr = mu_realloc(optstr, size + 1);
loptstr = mu_realloc(loptstr, lsize + 1);
option = mu_realloc(option,
(lcnt + 1) * sizeof(option[0]));
size = 0;
lsize = 0;
for (i = j = 0; i < n; i++) {
size_t len;
int val;
char *flags;
MF_VA_ARG(i, STRING, str);
len = strcspn(str, "|");
if (len > 0) {
flags = str + 1;
if (i == 0 || str[0] != '-') {
memcpy(optstr + size, str,
len);
size += len;
val = str[0];
} else
val = serial++;
} else {
flags = "";
val = serial++;
}
str += len;
if (*str) {
option[j].name = loptstr + lsize;
strcpy(loptstr + lsize, str + 1);
lsize += strlen(str) + 1;
if (flags[0] == ':')
option[j].has_arg =
(flags[1] == ':') ?
optional_argument :
required_argument;
else
option[j].has_arg =
no_argument;
option[j].flag = NULL;
option[j].val = val;
j++;
}
}
MF_VA_END();
optstr[size] = 0;
loptstr[lsize] = 0;
memset(&option[j], 0, sizeof option[0]);
} else
option = NULL;
}
if (xargc == 0 || optstr == NULL || option == 0)
MF_RETURN("");
optind = MF_VAR_REF(optind, int);
opterr = MF_VAR_REF(opterr, int);
rc = getopt_long(xargc, xargv, optstr, option, &long_idx);
MF_VAR_REF(optind, int, optind);
MF_VAR_REF(opterr, int, opterr);
s[0] = optopt;
MF_VAR_SET_STRING(optopt, s);
MF_VAR_SET_STRING(optarg, optarg);
if (rc == EOF)
MF_RETURN("");
if (rc < 256) {
s[0] = rc;
MF_RETURN(s);
}
MF_RETURN(option[long_idx].name);
}
END
MF_INIT(
struct value val;
val.type = dtype_number;
val.v.number = 1;
ensure_initialized_variable("opterr", &val);
)
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