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[XForms] NPOTDB Implement XPath functions: days-to-date and seconds-to-dateTime for XForms 1.1. Bug 420224, p=msterlin r=olli+aaronr

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git-svn-id: svn://10.0.0.236/trunk@248718 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
aaronr%us.ibm.com
2008-03-27 20:24:00 +00:00
parent 966d420fab
commit 6c7ce6f80e
2 changed files with 71 additions and 1 deletions
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4
mozilla/extensions/xforms/nsIXFormsXPathFunctions.idl
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@@ -40,7 +40,7 @@
#include "nsISupports.idl"
#include "txIFunctionEvaluationContext.idl"
[scriptable, uuid(5c8e8334-1ec6-42d9-8a15-4aef98ae19fa)]
[scriptable, uuid(c227850e-c326-4458-b436-0c4680fbe0d5)]
interface nsIXFormsXPathFunctions : nsISupports
{
double avg(in txINodeSet aNodeSet);
@@ -65,4 +65,6 @@ interface nsIXFormsXPathFunctions : nsISupports
double random(in boolean aSeed);
double compare(in DOMString aString1, in DOMString aString2);
boolean isCardNumber(in DOMString aNumber);
DOMString daysToDate(in double aDays);
DOMString secondsToDateTime(in double aSeconds);
};

68
mozilla/extensions/xforms/nsXFormsXPathFunctions.cpp
View File

@@ -628,3 +628,71 @@ nsXFormsXPathFunctions::IsCardNumber(const nsAString & aNumber,
return NS_OK;
}
NS_IMETHODIMP
nsXFormsXPathFunctions::DaysToDate(double aDays, nsAString &aResult)
{
// This function returns a string containing a lexical xsd:date that
// corresponds to the number of days passed as the parameter. The aDays
// parameter represents the difference between the desired date and
// 1970-01-01.
aResult.Truncate();
if (TX_DOUBLE_IS_NaN(aDays))
return NS_OK;
// Round total number of days to the nearest whole number.
PRTime t_days;
LL_I2L(t_days, floor(aDays+0.5));
PRTime t_secs, t_secs_per_day, t_usec, usec_per_sec;
// Calculate total number of seconds in aDays.
LL_I2L(t_secs_per_day, 86400UL);
LL_MUL(t_secs, t_days, t_secs_per_day);
// Convert total seconds to usecs.
LL_I2L(usec_per_sec, PR_USEC_PER_SEC);
LL_MUL(t_usec, t_secs, usec_per_sec);
// Convert the time to xsd:date format.
PRExplodedTime et;
PR_ExplodeTime(t_usec, PR_GMTParameters, &et);
char ctime[60];
PR_FormatTime(ctime, sizeof(ctime), "%Y-%m-%d", &et);
aResult.AssignLiteral(ctime);
return NS_OK;
}
NS_IMETHODIMP
nsXFormsXPathFunctions::SecondsToDateTime(double aSeconds, nsAString &aResult)
{
// This function returns a string containing a lexical xsd:dateTime that
// corresponds to the number of seconds passed as the parameter. The aSeconds
// parameter represents the difference between the desired UTC dateTime and
// 1970-01-01T00:00:00Z.
aResult.Truncate();
if (TX_DOUBLE_IS_NaN(aSeconds))
return NS_OK;
// Round total number of seconds to the nearest whole number.
PRTime t_secs;
LL_I2L(t_secs, floor(aSeconds+0.5));
// Convert total seconds to usecs.
PRTime t_usec, usec_per_sec;
LL_I2L(usec_per_sec, PR_USEC_PER_SEC);
LL_MUL(t_usec, t_secs, usec_per_sec);
// Convert the time to xsd:dateTime format.
PRExplodedTime et;
PR_ExplodeTime(t_usec, PR_GMTParameters, &et);
char ctime[60];
PR_FormatTime(ctime, sizeof(ctime), "%Y-%m-%dT%H:%M:%SZ", &et);
aResult.AssignLiteral(ctime);
return NS_OK;
}