Jan Breuer
2016-04-24 d2af547887e073edf233a436ea169aa7a0186a4e
libscpi/src/parser.c
@@ -219,7 +219,11 @@
                result &= processCommand(context);
                cmd_prev = state->programHeader;
            } else {
                SCPI_ErrorPush(context, SCPI_ERROR_UNDEFINED_HEADER);
                /* test */
                /* place undefined header with error */
                data[r ? (r - 1) : r] = 0;
                SCPI_ErrorPushEx(context, SCPI_ERROR_UNDEFINED_HEADER, data);
                //SCPI_ErrorPush(context, SCPI_ERROR_UNDEFINED_HEADER);
                result = FALSE;
            }
        }
@@ -246,14 +250,15 @@
 * @param buffer
 * @param interface
 */
void SCPI_Init(scpi_t * context,
void SCPI_Init(scpi_t * context,
        const scpi_command_t * commands,
        scpi_interface_t * interface,
        const scpi_unit_def_t * units,
        const char * idn1, const char * idn2, const char * idn3, const char * idn4,
        char * input_buffer, size_t input_buffer_length,
        int16_t * error_queue_data, int16_t error_queue_size) {
    memset(context, 0, sizeof(*context));
        char * input_buffer, size_t input_buffer_length,
        scpi_error_t * error_queue_data, int16_t error_queue_size,
        char * error_info_heap, size_t error_info_heap_length) {
    memset(context, 0, sizeof (*context));
    context->cmdlist = commands;
    context->interface = interface;
    context->units = units;
@@ -264,6 +269,11 @@
    context->buffer.data = input_buffer;
    context->buffer.length = input_buffer_length;
    context->buffer.position = 0;
    context->error_info_heap.data = error_info_heap;
    context->error_info_heap.wr = 0;
    context->error_info_heap.size = error_info_heap_length;
    context->error_info_heap.count = context->error_info_heap.size;
    memset(context->error_info_heap.data, 0, context->error_info_heap.size);
    SCPI_ErrorInit(context, error_queue_data, error_queue_size);
}
@@ -501,6 +511,79 @@
}
/**
 * SCPI-99:21.8 Device-dependent error information.
 * Write error information with the following syntax:
 * <Error/event_number>,"<Error/event_description>[;<Device-dependent_info>]"
 * The maximum string length of <Error/event_description> plus <Device-dependent_info>
 * is SCPI_STD_ERROR_DESC_MAX_STRING_LENGTH (255) characters.
 *
 * @param context
 * @param error
 * @return
 */
size_t SCPI_ResultError(scpi_t * context, scpi_error_t * error) {
    size_t result = 0;
    size_t outputlimit = SCPI_STD_ERROR_DESC_MAX_STRING_LENGTH;
    size_t step = 0;
    const char * quote;
    char * data[SCPIDEFINE_DESCRIPTION_MAX_PARTS];
    size_t len[SCPIDEFINE_DESCRIPTION_MAX_PARTS];
    data[0] = SCPI_ErrorTranslate(error->error_code);
    len[0] = strlen(data[0]);
#if USE_DEVICE_DEPENDENT_ERROR_INFORMATION
    data[1] = error->device_dependent_info;
#if USE_MEMORY_ALLOCATION_FREE
    len[1] = error->device_dependent_info ? strlen(data[1]) : 0;
#else
    SCPIDEFINE_get_parts(&context->error_info_heap, data[1], &len[1], &data[2], &len[2]);
#endif
#endif
    result += SCPI_ResultInt32(context, error->error_code);
    result += writeDelimiter(context);
    result += writeData(context, "\"", 1);
    for (size_t i = 0; data[i] && outputlimit && (i < SCPIDEFINE_DESCRIPTION_MAX_PARTS); i++) {
        if (i == 1) {
            result += writeSemicolon(context);
            outputlimit -= 1;
        }
        if (len[i] > outputlimit) {
            len[i] = outputlimit;
        }
        while ((quote = strnpbrk(data[i], len[i], "\""))) {
            if ((step = quote - data[i] + 1) >= outputlimit) {
                len[i] -= 1;
                outputlimit -= 1;
                break;
            }
            result += writeData(context, data[i], step);
            result += writeData(context, "\"", 1);
            len[i] -= step;
            outputlimit -= step + 1;
            data[i] = quote + 1;
            if (len[i] > outputlimit) {
                len[i] = outputlimit;
            }
        }
        result += writeData(context, data[i], len[i]);
        outputlimit -= len[i];
    }
    result += writeData(context, "\"", 1);
#if USE_DEVICE_DEPENDENT_ERROR_INFORMATION
    SCPIDEFINE_free(&context->error_info_heap, error->device_dependent_info, false);
#endif
    return result;
}
/**
 * Write arbitrary block header with length
 * @param context
 * @param len