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support modifiers for julianday()

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This commit is contained in:
meteorgan 2025-04-12 19:29:20 +08:00
parent 508df42075
commit 8200b328d8
5 changed files with 44 additions and 57 deletions
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32
core/functions/datetime.rs
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@ -46,20 +46,13 @@ enum DateTimeOutput {
DateTime,
// Holds the format string
StrfTime(String),
JuliaDay,
}
fn exec_datetime(values: &[Register], output_type: DateTimeOutput) -> OwnedValue {
if values.is_empty() {
let now = parse_naive_date_time(&OwnedValue::build_text("now")).unwrap();
let formatted_str = match output_type {
DateTimeOutput::DateTime => now.format("%Y-%m-%d %H:%M:%S").to_string(),
DateTimeOutput::Time => now.format("%H:%M:%S").to_string(),
DateTimeOutput::Date => now.format("%Y-%m-%d").to_string(),
DateTimeOutput::StrfTime(ref format_str) => strftime_format(&now, format_str),
};
// Parse here
let formatted_str = format_dt(now, output_type, false);
return OwnedValue::build_text(&formatted_str);
}
if let Some(mut dt) = parse_naive_date_time(values[0].get_owned_value()) {
@ -113,6 +106,7 @@ fn format_dt(dt: NaiveDateTime, output_type: DateTimeOutput, subsec: bool) -> St
}
}
DateTimeOutput::StrfTime(format_str) => strftime_format(&dt, &format_str),
DateTimeOutput::JuliaDay => format_julian_day(to_julian_day_exact(&dt)),
}
}
@ -325,14 +319,8 @@ fn last_day_in_month(year: i32, month: u32) -> u32 {
28
}
pub fn exec_julianday(time_value: &OwnedValue) -> Result<String> {
let dt = parse_naive_date_time(time_value);
match dt {
// if we did something heinous like: parse::<f64>().unwrap().to_string()
// that would solve the precision issue, but dear lord...
Some(dt) => Ok(format!("{:.1$}", to_julian_day_exact(&dt), 8)),
None => Ok(String::new()),
}
pub fn exec_julianday(values: &[Register]) -> OwnedValue {
exec_datetime(values, DateTimeOutput::JuliaDay)
}
fn to_julian_day_exact(dt: &NaiveDateTime) -> f64 {
@ -362,6 +350,16 @@ fn to_julian_day_exact(dt: &NaiveDateTime) -> f64 {
jd_days + jd_fraction
}
fn format_julian_day(days: f64) -> String {
let t = (days * 100_000_000.0).round() / 100_000_000.0;
let mut ret = format!("{}", t);
if !ret.contains('.') {
ret += ".0";
}
ret
}
pub fn exec_unixepoch(time_value: &OwnedValue) -> Result<String> {
let dt = parse_naive_date_time(time_value);
match dt {