ChameleonMini/Firmware/Chameleon-Mini/Map.c

#include "Map.h"

bool MapIdToText(const MapEntryType *MapPtr, uint8_t MapSize, MapIdType Id, char *Text, uint16_t MaxBufferSize) {
    while (MapSize--) {
        if (pgm_read_byte(&MapPtr->Id) == Id) {
            strncpy_P(Text, MapPtr->Text, MaxBufferSize);
            return true;
        }

        MapPtr++;
    }

    return false;
}

bool MapTextToId(const MapEntryType *MapPtr, uint8_t MapSize, MapTextPtrType Text, MapIdType *IdPtr) {
    while (MapSize--) {
        if (strcmp_P(Text, MapPtr->Text) == 0) {
            if (sizeof(MapIdType) == 1) {
                *IdPtr = pgm_read_byte(&MapPtr->Id);
            } else if (sizeof(MapIdType) == 2) {
                *IdPtr = pgm_read_word(&MapPtr->Id);
            }
            return true;
        }

        MapPtr++;
    }

    return false;
}

void MapToString(MapEntryType *MapPtr, uint8_t MapSize, char *String, uint16_t MaxBufferSize) {
    uint8_t EntriesLeft = MapSize;
    uint16_t BytesLeft = MaxBufferSize;

    while (EntriesLeft > 0) {
        const char *Text = MapPtr->Text;
        char c;

        while ((c = pgm_read_byte(Text)) != '\0') {
            if (BytesLeft == 0) {
                return;
            }

            *String++ = c;
            Text++;
            BytesLeft--;
        }

        if (EntriesLeft > 1) {
            /* More than one map entries left */
            if (BytesLeft == 0) {
                return;
            }

            *String++ = ',';
        }

        MapPtr++;
        EntriesLeft--;
    }

    /* Terminate string */
    if (BytesLeft > 0) {
        *String++ = '\0';
        BytesLeft--;
    }
}