Moment

UPDATE: Moved to its own Repo to be used with multiple languages at MomentLib

Natural Language Date/Time Parser Using Lex/Yacc/C

Moment handles simple and complex expressions. Because it's written in C, it can easily be transferred to many other languages.

To use it:
Add the 4 files to your project.
Include "TimeParser.h"
Then call the method parseDateTimeString(StringToParse), which returns a time_t type.  
You can then turn it into struct tm * with the localtime function. 

Here is what it looks like in objective c:
NSString *when = @"2 days from now at 3pm";
char *whenstr = (char *)[when UTF8String];
time_t finalTime = parseDateTimeString(whenstr);
str_time= localtime(&finalTime);


To get it to work in x-code all you have to do is add the files. X code automatically generates the C files for you.

Example Expressions:

Simple

• thursday
• november
• friday 13:00
• mon 2:35
• 4pm
• 6 in the morning
• friday 1pm
• sat 7 in the evening
• yesterday
• today
• tomorrow
• this tuesday
• next month
• this morning
• last night
• this second
• yesterday at 4:00
• last friday at 20:00
• last week tuesday
• tomorrow at 6:45pm
• afternoon yesterday
• thursday last week

Complex

• 3 years ago
• 5 months before now
• 7 hours ago
• 7 days from now
• 1 week hence
• in 3 hours
• 1 year ago tomorrow
• 3 months ago saturday at 5:00 pm
• 7 hours before tomorrow at noon
• 3rd wednesday in november
• 3rd month next year
• 3rd thursday this september
• 4th day last week

Specific Dates

• January 5
• dec 25
• may 27th
• October 2006
• jan 3 2010
• March 14, 2004
• March 14th, 2004
• 3 jan 2000
• 17 april 85
• 5/27/1979
• 27/5/1979
• 1979-05-27
• Friday
• 5
• 4:00
• 17:00
• 0800