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Add function to convert Date time from a dictionary to Epoch

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- Also changed get_time_from_unix_time to get_date_time_from_unix_time to be
  consistent.

Ticket:
https://github.com/godotengine/godot/issues/4038
This commit is contained in:
Kyle Luce 2016-03-15 21:17:10 -07:00
parent cb065b961c
commit 674c6f2f2d
4 changed files with 189 additions and 29 deletions
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181
core/bind/core_bind.cpp
View file

@ -14,6 +14,20 @@
#define SECS_DAY (24L * 60L * 60L)
#define LEAPYEAR(year) (!((year) % 4) && (((year) % 100) || !((year) % 400)))
#define YEARSIZE(year) (LEAPYEAR(year) ? 366 : 365)
#define SECOND_KEY "second"
#define MINUTE_KEY "minute"
#define HOUR_KEY "hour"
#define DAY_KEY "day"
#define MONTH_KEY "month"
#define YEAR_KEY "year"
#define WEEKDAY_KEY "weekday"
#define DST_KEY "dst"
/// Table of number of days in each month (for regular year and leap year)
static const unsigned int MONTH_DAYS_TABLE[2][12] = {
{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
};
_ResourceLoader *_ResourceLoader::singleton=NULL;
@ -485,15 +499,34 @@ void _OS::set_icon(const Image& p_icon) {
OS::get_singleton()->set_icon(p_icon);
}
/**
* Get current datetime with consideration for utc and
* dst
*/
Dictionary _OS::get_datetime(bool utc) const {
Dictionary dated = get_date(utc);
Dictionary timed = get_time(utc);
List<Variant> keys;
timed.get_key_list(&keys);
for(int i = 0; i < keys.size(); i++) {
dated[keys[i]] = timed[keys[i]];
}
return dated;
}
Dictionary _OS::get_date(bool utc) const {
OS::Date date = OS::get_singleton()->get_date(utc);
Dictionary dated;
dated["year"]=date.year;
dated["month"]=date.month;
dated["day"]=date.day;
dated["weekday"]=date.weekday;
dated["dst"]=date.dst;
dated[YEAR_KEY]=date.year;
dated[MONTH_KEY]=date.month;
dated[DAY_KEY]=date.day;
dated[WEEKDAY_KEY]=date.weekday;
dated[DST_KEY]=date.dst;
return dated;
}
@ -501,20 +534,117 @@ Dictionary _OS::get_time(bool utc) const {
OS::Time time = OS::get_singleton()->get_time(utc);
Dictionary timed;
timed["hour"]=time.hour;
timed["minute"]=time.min;
timed["second"]=time.sec;
timed[HOUR_KEY]=time.hour;
timed[MINUTE_KEY]=time.min;
timed[SECOND_KEY]=time.sec;
return timed;
}
/**
* Get a epoch time value from a dictionary of time values
* @p datetime must be populated with the following keys:
* day, hour, minute, month, second, year. (dst is ignored).
*
* You can pass the output from
* get_datetime_from_unix_time directly into this function
*
* @param datetime dictionary of date and time values to convert
*
* @return epoch calculated
*/
uint64_t _OS::get_unix_time_from_datetime(Dictionary datetime) const {
// Bunch of conversion constants
static const unsigned int SECONDS_PER_MINUTE = 60;
static const unsigned int MINUTES_PER_HOUR = 60;
static const unsigned int HOURS_PER_DAY = 24;
static const unsigned int SECONDS_PER_HOUR = MINUTES_PER_HOUR *
SECONDS_PER_MINUTE;
static const unsigned int SECONDS_PER_DAY = SECONDS_PER_HOUR * HOURS_PER_DAY;
// Get all time values from the dictionary, set to zero if it doesn't exist.
// Risk incorrect calculation over throwing errors
unsigned int second = ((datetime.has(SECOND_KEY))?
static_cast<unsigned int>(datetime[SECOND_KEY]): 0);
unsigned int minute = ((datetime.has(MINUTE_KEY))?
static_cast<unsigned int>(datetime[MINUTE_KEY]): 0);
unsigned int hour = ((datetime.has(HOUR_KEY))?
static_cast<unsigned int>(datetime[HOUR_KEY]): 0);
unsigned int day = ((datetime.has(DAY_KEY))?
static_cast<unsigned int>(datetime[DAY_KEY]): 0);
unsigned int month = ((datetime.has(MONTH_KEY))?
static_cast<unsigned int>(datetime[MONTH_KEY]) -1: 0);
unsigned int year = ((datetime.has(YEAR_KEY))?
static_cast<unsigned int>(datetime[YEAR_KEY]):0);
/// How many days come before each month (0-12)
static const unsigned short int DAYS_PAST_THIS_YEAR_TABLE[2][13] =
{
/* Normal years. */
{ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
/* Leap years. */
{ 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
};
ERR_EXPLAIN("Invalid second value of: " + itos(second));
ERR_FAIL_COND_V( second > 59, 0);
ERR_EXPLAIN("Invalid minute value of: " + itos(minute));
ERR_FAIL_COND_V( minute > 59, 0);
ERR_EXPLAIN("Invalid hour value of: " + itos(hour));
ERR_FAIL_COND_V( hour > 23, 0);
ERR_EXPLAIN("Invalid month value of: " + itos(month+1));
ERR_FAIL_COND_V( month+1 > 12, 0);
// Do this check after month is tested as valid
ERR_EXPLAIN("Invalid day value of: " + itos(day) + " which is larger "
"than "+ itos(MONTH_DAYS_TABLE[LEAPYEAR(year)][month]));
ERR_FAIL_COND_V( day > MONTH_DAYS_TABLE[LEAPYEAR(year)][month], 0);
// Calculate all the seconds from months past in this year
uint64_t SECONDS_FROM_MONTHS_PAST_THIS_YEAR =
DAYS_PAST_THIS_YEAR_TABLE[LEAPYEAR(year)][month] * SECONDS_PER_DAY;
uint64_t SECONDS_FROM_YEARS_PAST = 0;
for(unsigned int iyear = EPOCH_YR; iyear < year; iyear++) {
SECONDS_FROM_YEARS_PAST += YEARSIZE(iyear) *
SECONDS_PER_DAY;
}
uint64_t epoch =
second +
minute * SECONDS_PER_MINUTE +
hour * SECONDS_PER_HOUR +
// Subtract 1 from day, since the current day isn't over yet
// and we cannot count all 24 hours.
(day-1) * SECONDS_PER_DAY +
SECONDS_FROM_MONTHS_PAST_THIS_YEAR +
SECONDS_FROM_YEARS_PAST;
return epoch;
}
/**
* Get a dictionary of time values when given epoch time
*
* Dictionary Time values will be a union if values from #get_time
* and #get_date dictionaries (with the exception of dst =
* day light standard time, as it cannot be determined from epoch)
*
* @param unix_time_val epoch time to convert
*
* @return dictionary of date and time values
*/
Dictionary _OS::get_time_from_unix_time( uint64_t unix_time_val) const {
Dictionary _OS::get_datetime_from_unix_time( uint64_t unix_time_val) const {
// Just fail if unix time is negative (when interpreted as an int).
// This means the user passed in a negative value by accident
ERR_EXPLAIN("unix_time_val was really huge!"+ itos(unix_time_val) +
" You probably passed in a negative value!");
ERR_FAIL_COND_V( (int64_t)unix_time_val < 0, Dictionary());
OS::Date date;
OS::Time time;
@ -539,16 +669,10 @@ Dictionary _OS::get_time_from_unix_time( uint64_t unix_time_val) const {
date.year = year;
// Table of number of days in each month (for regular year and leap year)
const unsigned int _ytab[2][12] = {
{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
};
size_t imonth = 0;
while (dayno >= _ytab[LEAPYEAR(year)][imonth]) {
dayno -= _ytab[LEAPYEAR(year)][imonth];
while (dayno >= MONTH_DAYS_TABLE[LEAPYEAR(year)][imonth]) {
dayno -= MONTH_DAYS_TABLE[LEAPYEAR(year)][imonth];
imonth++;
}
@ -558,13 +682,13 @@ Dictionary _OS::get_time_from_unix_time( uint64_t unix_time_val) const {
date.day = dayno + 1;
Dictionary timed;
timed["hour"]=time.hour;
timed["minute"]=time.min;
timed["second"]=time.sec;
timed["year"]=date.year;
timed["month"]=date.month;
timed["day"]=date.day;
timed["weekday"]=date.weekday;
timed[HOUR_KEY]=time.hour;
timed[MINUTE_KEY]=time.min;
timed[SECOND_KEY]=time.sec;
timed[YEAR_KEY]=date.year;
timed[MONTH_KEY]=date.month;
timed[DAY_KEY]=date.day;
timed[WEEKDAY_KEY]=date.weekday;
return timed;
}
@ -580,7 +704,7 @@ Dictionary _OS::get_time_zone_info() const {
uint64_t _OS::get_unix_time() const {
return OS::get_singleton()->get_unix_time();
};
}
uint64_t _OS::get_system_time_secs() const {
return OS::get_singleton()->get_system_time_secs();
@ -912,12 +1036,15 @@ void _OS::_bind_methods() {
ObjectTypeDB::bind_method(_MD("get_cmdline_args"),&_OS::get_cmdline_args);
ObjectTypeDB::bind_method(_MD("get_main_loop"),&_OS::get_main_loop);
ObjectTypeDB::bind_method(_MD("get_datetime","utc"),&_OS::get_datetime,DEFVAL(false));
ObjectTypeDB::bind_method(_MD("get_date","utc"),&_OS::get_date,DEFVAL(false));
ObjectTypeDB::bind_method(_MD("get_time","utc"),&_OS::get_time,DEFVAL(false));
ObjectTypeDB::bind_method(_MD("get_time_zone_info"),&_OS::get_time_zone_info);
ObjectTypeDB::bind_method(_MD("get_unix_time"),&_OS::get_unix_time);
ObjectTypeDB::bind_method(_MD("get_time_from_unix_time", "unix_time_val"),
&_OS::get_time_from_unix_time);
ObjectTypeDB::bind_method(_MD("get_datetime_from_unix_time", "unix_time_val"),
&_OS::get_datetime_from_unix_time);
ObjectTypeDB::bind_method(_MD("get_unix_time_from_datetime", "datetime"),
&_OS::get_unix_time_from_datetime);
ObjectTypeDB::bind_method(_MD("get_system_time_secs"), &_OS::get_system_time_secs);
ObjectTypeDB::bind_method(_MD("set_icon","icon"),&_OS::set_icon);

4
core/bind/core_bind.h
View file

@ -212,7 +212,9 @@ public:
void set_icon(const Image& p_icon);
Dictionary get_date(bool utc) const;
Dictionary get_time(bool utc) const;
Dictionary get_time_from_unix_time(uint64_t unix_time_val) const;
Dictionary get_datetime(bool utc) const;
Dictionary get_datetime_from_unix_time(uint64_t unix_time_val) const;
uint64_t get_unix_time_from_datetime(Dictionary datetime) const;
Dictionary get_time_zone_info() const;
uint64_t get_unix_time() const;
uint64_t get_system_time_secs() const;

32
doc/base/classes.xml
View file

@ -20629,6 +20629,18 @@ Example: (content-length:12), (Content-Type:application/json; charset=UTF-8)
<argument index="0" name="utc" type="bool" default="false">
</argument>
<description>
Returns current date in a dictionary of keys: year, month,
day, weekday, dst (daylight savings time).
</description>
</method>
<method name="get_datetime" qualifiers="const">
<return type="Dictionary">
</return>
<argument index="0" name="utc" type="bool" default="false">
</argument>
<description>
Returns current datetime in a dictionary of keys: year,
month, day, weekday, dst (daylight savings time), hour, minute, second
</description>
</method>
<method name="get_time" qualifiers="const">
@ -20637,9 +20649,11 @@ Example: (content-length:12), (Content-Type:application/json; charset=UTF-8)
<argument index="0" name="utc" type="bool" default="false">
</argument>
<description>
Returns current time in a dictionary of keys:
hour, minute, second
</description>
</method>
<method name="get_time_from_unix_time" qualifiers="const">
<method name="get_datetime_from_unix_time" qualifiers="const">
<return type="Dictionary">
</return>
<argument index="0" name="unix_time_val" type="int">
@ -20651,6 +20665,22 @@ Example: (content-length:12), (Content-Type:application/json; charset=UTF-8)
day light standard time, as it cannot be determined from epoc)
</description>
</method>
<method name="get_unix_time_from_datetime" qualifiers="const">
<return type="int">
</return>
<argument index="0" name="datetime" type="Dictionary">
</argument>
<description>
Get an epoch time value from a dictionary of time values
datetime must be populated with the following keys:
day, hour, minute, month, second, year. You can pass the output from
[method get_datetime_from_unix_time] directly into this function. Day
light savings time (dst), if present, is ignored.
To be accurate, datetime dictionary must have keys for: year, month, day,
hour, minute, second
</description>
</method>
<method name="get_time_zone_info" qualifiers="const">
<return type="Dictionary">
</return>

1
drivers/unix/os_unix.cpp
View file

@ -261,6 +261,7 @@ OS::Date OS_Unix::get_date(bool utc) const {
return ret;
}
OS::Time OS_Unix::get_time(bool utc) const {
time_t t=time(NULL);
struct tm *lt;