mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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81 lines
1.8 KiB
C++
81 lines
1.8 KiB
C++
/* Bare text values.
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*
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* Author: Steffen Vogel <post@steffenvogel.de>
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* SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <villas/formats/value.hpp>
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#include <villas/sample.hpp>
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#include <villas/signal.hpp>
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using namespace villas::node;
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int ValueFormat::sprint(char *buf, size_t len, size_t *wbytes,
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const struct Sample *const smps[], unsigned cnt) {
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unsigned i;
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size_t off = 0;
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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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auto sig = smp->signals->getByIndex(i);
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if (!sig)
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return -1;
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off += smp->data[i].printString(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,
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struct Sample *const smps[], unsigned cnt) {
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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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auto sig = signals->getByIndex(i);
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if (!sig)
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return -1;
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ret = smp->data[i].parseString(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:
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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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// Register format
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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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