Initial Commit

src/duration.js

@@ -0,0 +1,41 @@
+/**
+ * allows for minutes, hh:mm, 1h 1m formats
+ * @type {RegExp}
+ */
+export const durationRe = /(^\d+|^([012]?\d:\d{2})|((?:^|\s)\d+(?:\.\d+)?[hm])+)$/i;
+
+export function convertDuration(value) {
+    if (!value) {
+        return value;
+    }
+
+    if (/^\d+$/.test(value)) {
+        return parseInt(value, 10);
+    }
+
+    const timeMatch = /^(?<hour>[012]?\d):(?<min>\d{2}$)/.exec(value);
+    if (timeMatch != null) {
+        const hours = parseInt(timeMatch.groups.hour, 10);
+        const mins = parseInt(timeMatch.groups.min, 10);
+        return (hours * 60) + mins;
+    }
+
+    if (/((?:^|\s)\d+(?:\.\d+)?[hm])+$/i.test(value)) {
+        let mins = 0;
+        const parts = value.split(/\s+/);
+        for (const part of parts) {
+            const {groups: {amount, spec}} = /^(?<amount>\d+(?:\.\d+)?)(?<spec>[hm])$/i.exec(part);
+            switch (spec.toLowerCase()) {
+                case 'h':
+                    mins += parseFloat(amount) * 60;
+                    break;
+                case 'm':
+                    mins += parseFloat(amount);
+                    break;
+            }
+        }
+        return mins;
+    }
+
+    return 0;
+}