1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/templates/native/buffer.c Fri Dec 09 16:22:37 2016 +0100
1.3 @@ -0,0 +1,61 @@
1.4 +/* Native functions for buffer operations.
1.5 +
1.6 +Copyright (C) 2016 Paul Boddie <paul@boddie.org.uk>
1.7 +
1.8 +This program is free software; you can redistribute it and/or modify it under
1.9 +the terms of the GNU General Public License as published by the Free Software
1.10 +Foundation; either version 3 of the License, or (at your option) any later
1.11 +version.
1.12 +
1.13 +This program is distributed in the hope that it will be useful, but WITHOUT
1.14 +ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
1.15 +FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
1.16 +details.
1.17 +
1.18 +You should have received a copy of the GNU General Public License along with
1.19 +this program. If not, see <http://www.gnu.org/licenses/>.
1.20 +*/
1.21 +
1.22 +#include <string.h> /* strcmp, strncpy, strlen */
1.23 +#include "native/common.h"
1.24 +#include "types.h"
1.25 +#include "exceptions.h"
1.26 +#include "ops.h"
1.27 +#include "progconsts.h"
1.28 +#include "progops.h"
1.29 +#include "progtypes.h"
1.30 +#include "main.h"
1.31 +
1.32 +__attr __fn_native_buffer_buffer_str(__attr __args[])
1.33 +{
1.34 + __attr * const _data = &__args[1];
1.35 + /* _data interpreted as buffer */
1.36 + __fragment *data = _data->seqvalue;
1.37 + unsigned int size = 0, i, j, n;
1.38 + char *s, *o;
1.39 +
1.40 + /* Calculate the size of the string. */
1.41 + for (i = 0; i < data->size; i++)
1.42 + size += strlen(__load_via_object(data->attrs[i].value, __pos___data__).strvalue);
1.43 +
1.44 + /* Reserve space for a new string. */
1.45 + s = (char *) __ALLOCATE(size + 1, sizeof(char));
1.46 +
1.47 + /* Build a single string from the buffer contents. */
1.48 + for (i = 0, j = 0; i < data->size; i++)
1.49 + {
1.50 + o = __load_via_object(data->attrs[i].value, __pos___data__).strvalue;
1.51 + n = strlen(o);
1.52 + strncpy(s + j, o, n); /* does not null terminate but final byte should be zero */
1.53 + j += n;
1.54 + }
1.55 +
1.56 + /* Return a new string. */
1.57 + return __new_str(s);
1.58 +}
1.59 +
1.60 +/* Module initialisation. */
1.61 +
1.62 +void __main_native_buffer()
1.63 +{
1.64 +}