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/*
Copyright (C) 2021 Fredrik Johansson
This file is part of Calcium.
Calcium is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version. See <http://www.gnu.org/licenses/>.
*/
#include "fexpr.h"
#include "fexpr_builtin.h"
void
fexpr_set_string(fexpr_t res, const char * s)
{
slong i, len;
len = strlen(s);
if (len <= FEXPR_SMALL_SYMBOL_LEN)
{
ulong data;
data = FEXPR_TYPE_SMALL_STRING;
for (i = 0; i < len; i++)
data |= (((ulong) s[i]) << ((i + 1) * 8));
res->data[0] = data;
}
else
{
slong data_size;
data_size = len + 1;
data_size = (data_size + sizeof(ulong) - 1) / sizeof(ulong);
fexpr_fit_size(res, data_size + 1);
res->data[0] = FEXPR_TYPE_BIG_STRING | ((data_size + 1) << FEXPR_TYPE_BITS);
res->data[data_size] = 0; /* zero pad for consistency */
memcpy((char *) (res->data + 1), s, len + 1);
}
}
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