@@ -19,6 +19,45 @@ impl DateTimeType {
}
}
+pub struct FormatDistance {
+ date: DateTimeType,
+ base_date: DateTimeType,
+ include_seconds: bool,
+ add_suffix: bool,
+ hide_prefix: bool,
+}
+
+impl FormatDistance {
+ pub fn new(date: DateTimeType, base_date: DateTimeType) -> Self {
+ Self {
+ date,
+ base_date,
+ include_seconds: false,
+ add_suffix: false,
+ hide_prefix: false,
+ }
+ }
+
+ pub fn from_now(date: DateTimeType) -> Self {
+ Self::new(date, DateTimeType::Local(Local::now()))
+ }
+
+ pub fn include_seconds(mut self, include_seconds: bool) -> Self {
+ self.include_seconds = include_seconds;
+ self
+ }
+
+ pub fn add_suffix(mut self, add_suffix: bool) -> Self {
+ self.add_suffix = add_suffix;
+ self
+ }
+
+ pub fn hide_prefix(mut self, hide_prefix: bool) -> Self {
+ self.hide_prefix = hide_prefix;
+ self
+ }
+}
+
/// Calculates the distance in seconds between two NaiveDateTime objects.
/// It returns a signed integer denoting the difference. If `date` is earlier than `base_date`, the returned value will be negative.
///
@@ -32,7 +71,12 @@ fn distance_in_seconds(date: NaiveDateTime, base_date: NaiveDateTime) -> i64 {
}
/// Generates a string describing the time distance between two dates in a human-readable way.
-fn distance_string(distance: i64, include_seconds: bool, add_suffix: bool) -> String {
+fn distance_string(
+ distance: i64,
+ include_seconds: bool,
+ add_suffix: bool,
+ hide_prefix: bool,
+) -> String {
let suffix = if distance < 0 { " from now" } else { " ago" };
let distance = distance.abs();
@@ -43,53 +87,128 @@ fn distance_string(distance: i64, include_seconds: bool, add_suffix: bool) -> St
let months = distance / 2_592_000;
let string = if distance < 5 && include_seconds {
- "less than 5 seconds".to_string()
+ if hide_prefix {
+ "5 seconds"
+ } else {
+ "less than 5 seconds"
+ }
+ .to_string()
} else if distance < 10 && include_seconds {
- "less than 10 seconds".to_string()
+ if hide_prefix {
+ "10 seconds"
+ } else {
+ "less than 10 seconds"
+ }
+ .to_string()
} else if distance < 20 && include_seconds {
- "less than 20 seconds".to_string()
+ if hide_prefix {
+ "20 seconds"
+ } else {
+ "less than 20 seconds"
+ }
+ .to_string()
} else if distance < 40 && include_seconds {
- "half a minute".to_string()
+ if hide_prefix {
+ "half a minute"
+ } else {
+ "half a minute"
+ }
+ .to_string()
} else if distance < 60 && include_seconds {
- "less than a minute".to_string()
+ if hide_prefix {
+ "a minute"
+ } else {
+ "less than a minute"
+ }
+ .to_string()
} else if distance < 90 && include_seconds {
"1 minute".to_string()
} else if distance < 30 {
- "less than a minute".to_string()
+ if hide_prefix {
+ "a minute"
+ } else {
+ "less than a minute"
+ }
+ .to_string()
} else if distance < 90 {
"1 minute".to_string()
} else if distance < 2_700 {
format!("{} minutes", minutes)
} else if distance < 5_400 {
- "about 1 hour".to_string()
+ if hide_prefix {
+ "1 hour"
+ } else {
+ "about 1 hour"
+ }
+ .to_string()
} else if distance < 86_400 {
- format!("about {} hours", hours)
+ if hide_prefix {
+ format!("{} hours", hours)
+ } else {
+ format!("about {} hours", hours)
+ }
+ .to_string()
} else if distance < 172_800 {
"1 day".to_string()
} else if distance < 2_592_000 {
format!("{} days", days)
} else if distance < 5_184_000 {
- "about 1 month".to_string()
+ if hide_prefix {
+ "1 month"
+ } else {
+ "about 1 month"
+ }
+ .to_string()
} else if distance < 7_776_000 {
- "about 2 months".to_string()
+ if hide_prefix {
+ "2 months"
+ } else {
+ "about 2 months"
+ }
+ .to_string()
} else if distance < 31_540_000 {
format!("{} months", months)
} else if distance < 39_425_000 {
- "about 1 year".to_string()
+ if hide_prefix {
+ "1 year"
+ } else {
+ "about 1 year"
+ }
+ .to_string()
} else if distance < 55_195_000 {
- "over 1 year".to_string()
+ if hide_prefix { "1 year" } else { "over 1 year" }.to_string()
} else if distance < 63_080_000 {
- "almost 2 years".to_string()
+ if hide_prefix {
+ "2 years"
+ } else {
+ "almost 2 years"
+ }
+ .to_string()
} else {
let years = distance / 31_536_000;
let remaining_months = (distance % 31_536_000) / 2_592_000;
if remaining_months < 3 {
- format!("about {} years", years)
+ if hide_prefix {
+ format!("{} years", years)
+ } else {
+ format!("about {} years", years)
+ }
+ .to_string()
} else if remaining_months < 9 {
- format!("over {} years", years)
+ if hide_prefix {
+ format!("{} years", years)
+ } else {
+ format!("over {} years", years)
+ }
+ .to_string()
} else {
- format!("almost {} years", years + 1)
+ if hide_prefix {
+ format!("{} years", years + 1)
+ } else {
+ format!("almost {} years", years + 1)
+ }
+ .to_string()
}
};
@@ -132,10 +251,11 @@ pub fn format_distance(
base_date: NaiveDateTime,
include_seconds: bool,
add_suffix: bool,
+ hide_prefix: bool,
) -> String {
let distance = distance_in_seconds(date.to_naive(), base_date);
- distance_string(distance, include_seconds, add_suffix)
+ distance_string(distance, include_seconds, add_suffix, hide_prefix)
}
/// Get the time difference between a date and now as relative human readable string.
@@ -165,10 +285,11 @@ pub fn format_distance_from_now(
datetime: DateTimeType,
include_seconds: bool,
add_suffix: bool,
+ hide_prefix: bool,
) -> String {
let now = chrono::offset::Local::now().naive_local();
- format_distance(datetime, now, include_seconds, add_suffix)
+ format_distance(datetime, now, include_seconds, add_suffix, hide_prefix)
}
#[cfg(test)]
@@ -187,7 +308,7 @@ mod tests {
assert_eq!(
"about 2 hours",
- format_distance(date, base_date.to_naive(), false, false)
+ format_distance(date, base_date.to_naive(), false, false, false)
);
}
@@ -202,7 +323,7 @@ mod tests {
assert_eq!(
"about 2 hours from now",
- format_distance(date, base_date.to_naive(), false, true)
+ format_distance(date, base_date.to_naive(), false, true, false)
);
}
@@ -215,41 +336,89 @@ mod tests {
assert_eq!(
"over 54 years ago",
- format_distance_from_now(date, false, true)
+ format_distance_from_now(date, false, true, false)
);
}
#[test]
fn test_format_distance_string() {
- assert_eq!(distance_string(3, false, false), "less than a minute");
- assert_eq!(distance_string(7, false, false), "less than a minute");
- assert_eq!(distance_string(13, false, false), "less than a minute");
- assert_eq!(distance_string(21, false, false), "less than a minute");
- assert_eq!(distance_string(45, false, false), "1 minute");
- assert_eq!(distance_string(61, false, false), "1 minute");
- assert_eq!(distance_string(1920, false, false), "32 minutes");
- assert_eq!(distance_string(3902, false, false), "about 1 hour");
- assert_eq!(distance_string(18002, false, false), "about 5 hours");
- assert_eq!(distance_string(86470, false, false), "1 day");
- assert_eq!(distance_string(345880, false, false), "4 days");
- assert_eq!(distance_string(2764800, false, false), "about 1 month");
- assert_eq!(distance_string(5184000, false, false), "about 2 months");
- assert_eq!(distance_string(10368000, false, false), "4 months");
- assert_eq!(distance_string(34694000, false, false), "about 1 year");
- assert_eq!(distance_string(47310000, false, false), "over 1 year");
- assert_eq!(distance_string(61503000, false, false), "almost 2 years");
- assert_eq!(distance_string(160854000, false, false), "about 5 years");
- assert_eq!(distance_string(236550000, false, false), "over 7 years");
- assert_eq!(distance_string(249166000, false, false), "almost 8 years");
+ assert_eq!(
+ distance_string(3, false, false, false),
+ "less than a minute"
+ );
+ assert_eq!(
+ distance_string(7, false, false, false),
+ "less than a minute"
+ );
+ assert_eq!(
+ distance_string(13, false, false, false),
+ "less than a minute"
+ );
+ assert_eq!(
+ distance_string(21, false, false, false),
+ "less than a minute"
+ );
+ assert_eq!(distance_string(45, false, false, false), "1 minute");
+ assert_eq!(distance_string(61, false, false, false), "1 minute");
+ assert_eq!(distance_string(1920, false, false, false), "32 minutes");
+ assert_eq!(distance_string(3902, false, false, false), "about 1 hour");
+ assert_eq!(distance_string(18002, false, false, false), "about 5 hours");
+ assert_eq!(distance_string(86470, false, false, false), "1 day");
+ assert_eq!(distance_string(345880, false, false, false), "4 days");
+ assert_eq!(
+ distance_string(2764800, false, false, false),
+ "about 1 month"
+ );
+ assert_eq!(
+ distance_string(5184000, false, false, false),
+ "about 2 months"
+ );
+ assert_eq!(distance_string(10368000, false, false, false), "4 months");
+ assert_eq!(
+ distance_string(34694000, false, false, false),
+ "about 1 year"
+ );
+ assert_eq!(
+ distance_string(47310000, false, false, false),
+ "over 1 year"
+ );
+ assert_eq!(
+ distance_string(61503000, false, false, false),
+ "almost 2 years"
+ );
+ assert_eq!(
+ distance_string(160854000, false, false, false),
+ "about 5 years"
+ );
+ assert_eq!(
+ distance_string(236550000, false, false, false),
+ "over 7 years"
+ );
+ assert_eq!(
+ distance_string(249166000, false, false, false),
+ "almost 8 years"
+ );
}
#[test]
fn test_format_distance_string_include_seconds() {
- assert_eq!(distance_string(3, true, false), "less than 5 seconds");
- assert_eq!(distance_string(7, true, false), "less than 10 seconds");
- assert_eq!(distance_string(13, true, false), "less than 20 seconds");
- assert_eq!(distance_string(21, true, false), "half a minute");
- assert_eq!(distance_string(45, true, false), "less than a minute");
- assert_eq!(distance_string(61, true, false), "1 minute");
+ assert_eq!(
+ distance_string(3, true, false, false),
+ "less than 5 seconds"
+ );
+ assert_eq!(
+ distance_string(7, true, false, false),
+ "less than 10 seconds"
+ );
+ assert_eq!(
+ distance_string(13, true, false, false),
+ "less than 20 seconds"
+ );
+ assert_eq!(distance_string(21, true, false, false), "half a minute");
+ assert_eq!(
+ distance_string(45, true, false, false),
+ "less than a minute"
+ );
+ assert_eq!(distance_string(61, true, false, false), "1 minute");
}
}