static DocParseErr_t extractParameter()

in source/ota.c [1659:1720]
52 lines of code
9 McCabe index (conditional complexity)

static DocParseErr_t extractParameter( JsonDocParam_t docParam,
                                       void * pContextBase,
                                       const char * pValueInJson,
                                       size_t valueLength )
{
    DocParseErr_t err = DocParseErrNone;
    void * pParamAdd;
    uint32_t * pParamSizeAdd;

    /* Get destination offset to parameter storage location.*/
    pParamAdd = ( uint8_t * ) pContextBase + docParam.pDestOffset;

    if( ( ModelParamTypeStringCopy == docParam.modelParamType ) || ( ModelParamTypeArrayCopy == docParam.modelParamType ) )
    {
        /* Get destination buffer size to parameter storage location. */
        pParamSizeAdd = ( void * ) ( ( uint8_t * ) pContextBase + docParam.pDestSizeOffset );

        err = extractAndStoreArray( docParam.pSrcKey, pValueInJson, valueLength, pParamAdd, pParamSizeAdd );
    }
    else if( ModelParamTypeUInt32 == docParam.modelParamType )
    {
        uint32_t * pUint32 = pParamAdd;
        char * pEnd;
        const char * pStart = pValueInJson;
        errno = 0;

        *pUint32 = ( uint32_t ) strtoul( pStart, &pEnd, 0 );

        if( ( errno == 0 ) && ( pEnd == &pValueInJson[ valueLength ] ) )
        {
            LogInfo( ( "Extracted parameter: [key: value]=[%s: %u]",
                       docParam.pSrcKey, *pUint32 ) );
        }
        else
        {
            err = DocParseErrInvalidNumChar;
        }
    }
    else if( ModelParamTypeSigBase64 == docParam.modelParamType )
    {
        err = decodeAndStoreKey( pValueInJson, valueLength, pParamAdd );
    }
    else if( ModelParamTypeIdent == docParam.modelParamType )
    {
        LogDebug( ( "Identified parameter: [ %s ]",
                    docParam.pSrcKey ) );

        *( bool * ) pParamAdd = true;
    }
    else
    {
        LogWarn( ( "Invalid parameter type: %d", docParam.modelParamType ) );
    }

    if( err != DocParseErrNone )
    {
        LogDebug( ( "Failed to extract document parameter: error=%d, paramter key=%s",
                    err, docParam.pSrcKey ) );
    }

    return err;
}