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annotate m-toolbox/classes/@time/strftime.m @ 41:6def6533cb16 database-connection-manager

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author Daniele Nicolodi <nicolodi@science.unitn.it>
date Mon, 05 Dec 2011 18:04:34 +0100
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1 % STRFTIME Formats a time expressed as msec since the epoch into a string
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2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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3 %
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4 % DESCRIPTION: STRFTIME(MSEC, FRMT, TIMEZONE) Formats the time MSEC, expressed
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5 % as milliseconds since the unix epoch, 1970-01-01 00:00:00.000 UTC, into a
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6 % string, accordingly to the format descrption FRMT and the timezone TIMEZONE.
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7 %
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8 % The FRMT format description can be a format number or a free form date format
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9 % string, as accepted by the datestr() MATLAB function. The FRMT and TIMEZONE
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10 % arguments are optional, if they are not specified or empty, the ones stored in
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11 % the toolbox user preferences are used.
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12 %
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13 % EXAMPLES:
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14 %
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15 % >> msec = time.now();
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16 % >> str = time.strftime(msec);
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17 % >> str = time.strftime(msec, 'yyyy-mm-dd HH:MM:SS.FFF z');
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18 % >> str = time.strftime(msec, 'yyyy-mm-dd HH:MM:SS.FFF z', 'UTC');
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19 %
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20 % SEE ALSO: datestr
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21 %
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22 % VERSION: $Id: strftime.m,v 1.2 2011/03/24 14:49:37 mauro Exp $
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23 %
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24 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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25
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26 function str = strftime(msec, frmt, timezone)
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27
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28 % check input arguments
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29 error(nargchk(1, 3, nargin, 'struct'));
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30
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31 % second and third arguments are optional
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32 if nargin < 3
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33 timezone = '';
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34 end
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35 if nargin < 2
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36 frmt = '';
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37 end
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38
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39 % In the case of NaN, just set the output to 'NaN'
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40 if isnan(msec)
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41 str = 'NaN';
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42 return
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43 end
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44
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45 % check timezone
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46 if isempty(timezone)
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47 timezone = time.timezone;
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48 end
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49 % convert string timezone into java object
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50 if ischar(timezone)
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51 timezone = java.util.TimeZone.getTimeZone(timezone);
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52 end
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53
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54 % check frmt
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55 if isempty(frmt)
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56 frmt = time.timeformat;
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57 end
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58 % convert matlab time formatting specification string into a java one
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59 frmt = time.matfrmt2javafrmt(frmt);
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60
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61 % format
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62 tformat = java.text.SimpleDateFormat(frmt);
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63 tformat.setTimeZone(timezone);
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64 str = char(tformat.format(msec));
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65
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66 end
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