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https://git.rwth-aachen.de/acs/public/villas/node/
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95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
/** Bare text values.
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*
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2014-2019, 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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* VILLASnode
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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 <villas/formats/value.hpp>
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#include <villas/sample.h>
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#include <villas/signal.h>
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using namespace villas::node;
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int ValueFormat::sprint(char *buf, size_t len, size_t *wbytes, const struct sample * const smps[], unsigned cnt)
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{
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unsigned i;
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size_t off = 0;
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struct signal *sig;
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const struct sample *smp = smps[0];
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assert(cnt == 1);
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assert(smp->length <= 1);
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buf[0] = '\0';
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for (i = 0; i < smp->length; i++) {
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sig = (struct signal *) vlist_at_safe(smp->signals, i);
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if (!sig)
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return -1;
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off += signal_data_print_str(&smp->data[i], sig->type, buf, len, real_precision);
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off += snprintf(buf + off, len - off, "\n");
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}
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if (wbytes)
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*wbytes = off;
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return i;
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}
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int ValueFormat::sscan(const char *buf, size_t len, size_t *rbytes, struct sample * const smps[], unsigned cnt)
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{
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unsigned i = 0, ret;
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struct sample *smp = smps[0];
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const char *ptr = buf;
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char *end;
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assert(cnt == 1);
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printf("Reading: %s", buf);
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if (smp->capacity >= 1) {
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struct signal *sig = (struct signal *) vlist_at_safe(signals, i);
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if (!sig)
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return -1;
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ret = signal_data_parse_str(&smp->data[i], sig->type, ptr, &end);
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if (ret || end == ptr) /* There are no valid values anymore. */
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goto out;
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i++;
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ptr = end;
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}
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out: smp->flags = 0;
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smp->signals = signals;
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smp->length = i;
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if (smp->length > 0)
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smp->flags |= (int) SampleFlags::HAS_DATA;
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if (rbytes)
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*rbytes = ptr - buf;
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return i;
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}
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static char n[] = "value";
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static char d[] = "A bare text value without any headers";
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static FormatPlugin<ValueFormat, n, d, (int) SampleFlags::HAS_DATA> p;
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