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/*
* Wiki - A wiki with editor
* Copyright (c) 2021 Peter Stuifzand
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package main
import (
"time"
)
func combine(x, y Change) Change {
x.Count++
if x.Body == "" {
x.Body = y.Body
} else {
x.Body += " " + y.Body
}
x.EndDate = y.Date
return x
}
func changeEqual(x, y Change) bool {
return x.Page == y.Page && x.Date.Truncate(24*time.Hour) == y.Date.Truncate(24*time.Hour)
}
func groupRecentChanges(changes []Change) int {
if len(changes) <= 1 {
return 0
}
f := len(changes) - 1
i := f - 1
for {
if changeEqual(changes[f], changes[i]) {
changes[f] = combine(changes[f], changes[i])
} else {
f--
changes[f] = changes[i]
}
if i <= 0 {
break
}
i--
}
return f
}