mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
/** Compatability for different library versions.
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*
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* @author Steffen Vogel <svogel2@eonerc.rwth-aachen.de>
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* @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
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* @license GNU General Public License (version 3)
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*
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* VILLAScommon
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************************/
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#include <cstring>
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#include <jansson.h>
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#include <unistd.h>
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#include <villas/compat.hpp>
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#if JANSSON_VERSION_HEX < 0x020A00
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size_t json_dumpb(const json_t *json, char *buffer, size_t size, size_t flags)
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{
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char *str;
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size_t len;
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str = json_dumps(json, flags);
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if (!str)
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return 0;
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len = strlen(str); /* not \0 terminated */
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if (buffer && len <= size)
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memcpy(buffer, str, len);
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free(str);
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return len;
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}
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static size_t json_loadfd_callback(void *buffer, size_t buflen, void *data)
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{
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int *fd = (int *) data;
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return (size_t) read(*fd, buffer, buflen);
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}
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json_t *json_loadfd(int input, size_t flags, json_error_t *error)
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{
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return json_load_callback(json_loadfd_callback, (void *) &input, flags, error);
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}
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static int json_dumpfd_callback(const char *buffer, size_t size, void *data)
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{
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#ifdef HAVE_UNISTD_H
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int *dest = (int *)data;
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if (write(*dest, buffer, size) == (ssize_t)size)
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return 0;
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#else
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(void)buffer;
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(void)size;
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(void)data;
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#endif /* HAVE_UNISTD_H */
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return -1;
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}
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int json_dumpfd(const json_t *json, int output, size_t flags)
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{
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return json_dump_callback(json, json_dumpfd_callback, (void *) &output, flags);
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}
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#endif /* JANSSON_VERSION_HEX < 0x020A00 */
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