Example #1
0
/*----------------------------------------------------------------------
|   NPT_String::Format
+---------------------------------------------------------------------*/
NPT_String
NPT_String::Format(const char* format, ...)
{
    NPT_String result;
    NPT_Size   buffer_size = NPT_STRING_FORMAT_BUFFER_DEFAULT_SIZE; // default value
    
    va_list  args;

    for(;;) {
        /* try to format (it might not fit) */
        result.Reserve(buffer_size);
        char* buffer = result.UseChars();
        va_start(args, format);
        int f_result = NPT_FormatStringVN(buffer, buffer_size, format, args);
        va_end(args);
        if (f_result >= (int)(buffer_size)) f_result = -1;
        if (f_result >= 0) {
            result.SetLength(f_result);
            break;
        }
        
        /* the buffer was too small, try something bigger         */
        /* (we don't trust the return value of NPT_FormatStringVN */
        /* for the actual size needed)                            */
        buffer_size *= 2;
        if (buffer_size > NPT_STRING_FORMAT_BUFFER_MAX_SIZE) break;
    }
    
    return result;
}
Example #2
0
/*----------------------------------------------------------------------
|   AppendNumber
+---------------------------------------------------------------------*/
static void
AppendNumber(NPT_String& output, NPT_UInt32 number, unsigned int digit_count)
{
    NPT_Size new_length = output.GetLength()+digit_count;
    output.SetLength(new_length);
    char* dest = output.UseChars()+new_length;
    while (digit_count--) {
        *--dest = '0'+(number%10);
        number /= 10;
    }
}
/*----------------------------------------------------------------------
|   NPT_BufferedInputStream::ReadLine
+---------------------------------------------------------------------*/
NPT_Result
NPT_BufferedInputStream::ReadLine(NPT_String& line,
                                  NPT_Size    max_chars,
                                  bool        break_on_cr)
{
    // clear the line
    line.SetLength(0);

    // reserve space for the chars
    line.Reserve(max_chars);

    // read the line
    NPT_Size chars_read = 0;
    NPT_CHECK_NOLOGTIMEOUT(ReadLine(line.UseChars(), max_chars, &chars_read, break_on_cr));

    // adjust the length of the string object
    line.SetLength(chars_read);

    return NPT_SUCCESS;
}
Example #4
0
/*----------------------------------------------------------------------
|   NPT_DateTime::ToString
+---------------------------------------------------------------------*/
NPT_String
NPT_DateTime::ToString(Format format, NPT_Flags flags) const
{
    NPT_String result;
    
    if (NPT_FAILED(CheckDate(*this))) return result;
    
    switch (format) {
        case FORMAT_W3C:
            AppendNumber(result, m_Year, 4);
            result += '-';
            AppendNumber(result, m_Month, 2);
            result += '-';
            AppendNumber(result, m_Day, 2);
            result += 'T';
            AppendNumber(result, m_Hours, 2);
            result += ':';
            AppendNumber(result, m_Minutes, 2);
            result += ':';
            AppendNumber(result, m_Seconds, 2);
            if (flags & FLAG_EMIT_FRACTION) {
                result += '.';
                if (flags & FLAG_EXTENDED_PRECISION) {
                    // nanoseconds precision
                    AppendNumber(result, m_NanoSeconds, 9);
                } else {
                    // only miliseconds precision
                    AppendNumber(result, m_NanoSeconds/1000000, 3);
                }
            }
            if (m_TimeZone) {
                NPT_UInt32 tz;
                if (m_TimeZone > 0) {
                    result += '+';
                    tz = m_TimeZone;
                } else {
                    result += '-';
                    tz = -m_TimeZone;
                }
                AppendNumber(result, tz/60, 2);
                result += ':';
                AppendNumber(result, tz%60, 2);
            } else {
                result += 'Z';
            }
            break;
            
        case FORMAT_ANSI: {
            // compute the number of days elapsed since 1900
            NPT_UInt32 days = ElapsedDaysSince1900(*this);
            
            // format the result
            result.SetLength(24);
            NPT_FormatString(result.UseChars(), result.GetLength()+1, 
                             "%.3s %.3s%3d %.2d:%.2d:%.2d %d",
                             NPT_TIME_DAYS_SHORT[(days+1)%7],
                             NPT_TIME_MONTHS[m_Month-1],
                             m_Day,
                             m_Hours,
                             m_Minutes,
                             m_Seconds,
                             m_Year);
            break;
        }
            
        case FORMAT_RFC_1036:
        case FORMAT_RFC_1123: {
            // compute the number of days elapsed since 1900
            NPT_UInt32 days = ElapsedDaysSince1900(*this);

            if (format == FORMAT_RFC_1036) {
                result += NPT_TIME_DAYS_LONG[(days+1)%7];
                result += ", ";
                AppendNumber(result, m_Day, 2);
                result += '-';
                result += NPT_TIME_MONTHS[m_Month-1];
                result += '-';
                AppendNumber(result, m_Year%100, 2);
            } else {
                result += NPT_TIME_DAYS_SHORT[(days+1)%7];
                result += ", ";
                AppendNumber(result, m_Day, 2);
                result += ' ';
                result += NPT_TIME_MONTHS[m_Month-1];
                result += ' ';
                AppendNumber(result, m_Year, 4);
            }
            result += ' ';
            AppendNumber(result, m_Hours, 2);
            result += ':';
            AppendNumber(result, m_Minutes, 2);
            result += ':';
            AppendNumber(result, m_Seconds, 2);
            if (m_TimeZone) {
                if (m_TimeZone > 0) {
                    result += " +";
                    AppendNumber(result, m_TimeZone/60, 2);
                    AppendNumber(result, m_TimeZone%60, 2);
                } else {
                    result += " -";
                    AppendNumber(result, -m_TimeZone/60, 2);
                    AppendNumber(result, -m_TimeZone%60, 2);
                }
            } else {
                result += " GMT";
            }
            break;
        }
    }

    return result;
}