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CommandStation-EX/Stash.cpp
2025-03-12 11:14:49 +00:00

90 lines
2.4 KiB
C++

/*
* © 2024 Chris Harlow
* All rights reserved.
*
* This file is part of DCC-EX
*
* This is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* It is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
*/
#include "Stash.h"
#include "StringFormatter.h"
Stash::Stash(int16_t stash_id, int16_t loco_id) {
this->stashId = stash_id;
this->locoId = loco_id;
this->next = first;
first = this;
}
void Stash::clearAll() {
for (auto s=first;s;s=s->next) {
s->locoId = 0;
s->stashId =0;
}
}
void Stash::clearAny(int16_t loco_id) {
auto lid=abs(loco_id);
for (auto s=first;s;s=s->next)
if (abs(s->locoId) == lid) {
s->locoId = 0;
s->stashId =0;
}
}
void Stash::clear(int16_t stash_id) {
set(stash_id,0);
}
int16_t Stash::get(int16_t stash_id) {
for (auto s=first;s;s=s->next)
if (s->stashId == stash_id) return s->locoId;
return 0;
}
void Stash::set(int16_t stash_id, int16_t loco_id) {
// replace any existing stash
for (auto s=first;s;s=s->next)
if (s->stashId == stash_id) {
s->locoId=loco_id;
if (loco_id==0) s->stashId=0; // recycle
return;
}
if (loco_id==0) return; // no need to create a zero entry.
// replace any empty stash
for (auto s=first;s;s=s->next)
if (s->locoId == 0) {
s->locoId=loco_id;
s->stashId=stash_id;
return;
}
// create a new stash
new Stash(stash_id, loco_id);
}
void Stash::list(Print * stream, int16_t stash_id) {
bool sent=false;
for (auto s=first;s;s=s->next)
if ((s->locoId) && (stash_id==0 || s->stashId==stash_id)) {
StringFormatter::send(stream,F("<jM %d %d>\n"),
s->stashId,s->locoId);
sent=true;
}
if (!sent) StringFormatter::send(stream,F("<jM %d 0>\n"),
stash_id);
}
Stash* Stash::first=nullptr;