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condition-util.go
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condition-util.go
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/*
* Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
// Package conditions provides implementation of basic condition rules to enable building elaborated policies.
package conditions
import (
"strconv"
"strings"
"time"
)
const (
timeLayout = "2006-01-02T15:04-0700"
officeHoursLayout = "Monday-Tuesday/15:04-0700/18:04"
)
var (
// Ease implementation by defining this map
daysMap = map[string]uint{
time.Sunday.String(): 0,
time.Monday.String(): 1,
time.Tuesday.String(): 2,
time.Wednesday.String(): 3,
time.Thursday.String(): 4,
time.Friday.String(): 5,
time.Saturday.String(): 6,
}
)
func isWeekdayValid(validDays uint, day time.Weekday) bool {
return validDays&(1<<uint(day)) > 0
}
// Warning only check time, we assume we are in the same time zone and that the day has been priorly checked
func isWithinValidHours(minuteBegin int, minuteEnd int, time time.Time) bool {
toCheck := time.Hour()*60 + time.Minute()
return toCheck >= minuteBegin && toCheck <= minuteEnd
}
func parseOfficeHours(pattern string) (days uint, minuteBegin int, minuteEnd int, err error) {
tokens := strings.Split(pattern, "/")
// manage days of week: transform valid days to a bitwise flag unsigned integer
days = 0
cleaned := strings.Replace(tokens[0], " ", "", -1) // clean by removing all spaces
if strings.Contains(cleaned, "-") {
ds := strings.Split(cleaned, "-")
dayBegin := daysMap[ds[0]]
dayEnd := daysMap[ds[1]]
var i uint
for i = dayBegin; i <= dayEnd; i++ {
days += 1 << i
}
} else if strings.Contains(cleaned, ",") {
dayStrs := strings.Split(cleaned, ",")
for _, val := range dayStrs {
days += 1 << daysMap[val]
}
} else {
days += 1 << daysMap[cleaned]
}
// Then transforms hours that have a 15:04 format to minutes from midnight
// TODO manage time zone
minuteBegin = timeStringToMinutes(tokens[1])
minuteEnd = timeStringToMinutes(tokens[2])
return
}
// timeStringToMinutes assumes a correctly formatted string
func timeStringToMinutes(str string) int {
tokens := strings.Split(str, ":")
hours, _ := strconv.Atoi(tokens[0])
minutes, _ := strconv.Atoi(tokens[1])
return hours*60 + minutes
}