converting date format

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dtsearchvaliddatestring

DtSearchValidDateString(library call)									     DtSearchValidDateString(library call)

NAME

       DtSearchValidDateString -- Validate and convert a user date string

SYNOPSIS

       #include <Dt/Search.h>
       DtSrObjdate DtSearchValidDateString(
       char *date_string);

DESCRIPTION

       DtSearchValidDateString	validates  a DtSearch date string, as might have been entered by a user in a free form text field, and converts it
       into a valid DtSrObjdate.

       Since an invalid date string format returns a distinctive DtSrObjdate, this function may also be used as a boolean test for  string  valid-
       ity.

ARGUMENTS

       date_string
		 Specifies the date string to be validated and converted.

		 The  format for a valid date string is "[yyyy [mm [dd]]", one, two, or three ASCII numeric tokens separated by one or more nonnu-
		 meric chars (whitespace, slashes, etc). The integer yyyy represents a Gregorian calendar year number in the range  1990  to  5995
		 inclusive.  If yyyy is less than 1900, 1900 is added to it. The integer mm is a Gregorian calendar month number in the range 1 to
		 12 inclusive. The integer dd is a Gregorian calendar day number in the range 1 to 31 inclusive.

		 If only two tokens are in the string, they are presumed to be yyyy and mm, and dd is presumed to be to 1.

		 If only one token is in the string, it is presumed to be yyyy, and both mm and dd are presumed to be 1.

RETURN VALUE

       DtSearchValidDateString returns zero (a valid DtSrObjdate) if date_string is NULL or empty.

       It returns a correctly formatted DtSrObjdate on successful parse and conversion.

       It returns -1 and a message on the MessageList if date_string is invalid.

SEE ALSO

       DtSrAPI(3), DtSearchQuery(3), dtsrfzkfiles(4), DtSearch(5)

													     DtSearchValidDateString(library call)

Shell Programming and Scripting