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package todolist
import (
"fmt"
"regexp"
"strings"
"time"
"github.com/jinzhu/now"
)
type Parser struct{}
func (p *Parser) ParseNewTodo(input string) *Todo {
todo := NewTodo()
todo.Subject = p.Subject(input)
todo.Projects = p.Projects(input)
todo.Contexts = p.Contexts(input)
if p.hasDue(input) {
todo.Due = p.Due(input, time.Now())
}
return todo
}
func (p *Parser) Subject(input string) string {
r, _ := regexp.Compile(`^(add|a) `)
input = r.ReplaceAllString(input, "")
if strings.Contains(input, " due") {
index := strings.LastIndex(input, " due")
return input[0:index]
} else {
return input
}
}
func (p *Parser) Projects(input string) []string {
r, _ := regexp.Compile(`\+\w+`)
return p.matchWords(input, r)
}
func (p *Parser) Contexts(input string) []string {
r, err := regexp.Compile(`\@\w+`)
if err != nil {
fmt.Println("regex error", err)
}
return p.matchWords(input, r)
}
func (p *Parser) hasDue(input string) bool {
r, _ := regexp.Compile(`due \w+$`)
return r.MatchString(input)
}
func (p *Parser) Due(input string, day time.Time) string {
r, _ := regexp.Compile(`due .*$`)
res := r.FindString(input)
res = res[4:len(res)]
switch {
case res == "none":
return ""
case res == "today":
return now.BeginningOfDay().Format("2006-01-02")
case res == "tomorrow" || res == "tom":
return now.BeginningOfDay().AddDate(0, 0, 1).Format("2006-01-02")
case res == "monday" || res == "mon":
return p.monday(day)
case res == "tuesday" || res == "tue":
return p.tuesday(day)
case res == "wednesday" || res == "wed":
return p.wednesday(day)
case res == "thursday" || res == "thu":
return p.thursday(day)
case res == "friday" || res == "fri":
return p.friday(day)
case res == "saturday" || res == "sat":
return p.saturday(day)
case res == "sunday" || res == "sun":
return p.sunday(day)
case res == "next week":
n := now.BeginningOfDay()
return now.New(n).Monday().AddDate(0, 0, 7).Format("2006-01-02")
}
return time.Now().Format("2006-01-02")
}
func (p *Parser) monday(day time.Time) string {
mon := now.New(day).Monday()
return p.thisOrNextWeek(mon, day)
}
func (p *Parser) tuesday(day time.Time) string {
tue := now.New(day).Monday().AddDate(0, 0, 1)
return p.thisOrNextWeek(tue, day)
}
func (p *Parser) wednesday(day time.Time) string {
tue := now.New(day).Monday().AddDate(0, 0, 2)
return p.thisOrNextWeek(tue, day)
}
func (p *Parser) thursday(day time.Time) string {
tue := now.New(day).Monday().AddDate(0, 0, 3)
return p.thisOrNextWeek(tue, day)
}
func (p *Parser) friday(day time.Time) string {
tue := now.New(day).Monday().AddDate(0, 0, 4)
return p.thisOrNextWeek(tue, day)
}
func (p *Parser) saturday(day time.Time) string {
tue := now.New(day).Monday().AddDate(0, 0, 5)
return p.thisOrNextWeek(tue, day)
}
func (p *Parser) sunday(day time.Time) string {
tue := now.New(day).Monday().AddDate(0, 0, 6)
return p.thisOrNextWeek(tue, day)
}
func (p *Parser) thisOrNextWeek(day time.Time, pivotDay time.Time) string {
if day.Before(pivotDay) {
return day.AddDate(0, 0, 7).Format("2006-01-02")
} else {
return day.Format("2006-01-02")
}
}
func (p *Parser) matchWords(input string, r *regexp.Regexp) []string {
results := r.FindAllString(input, -1)
ret := []string{}
for _, val := range results {
ret = append(ret, val[1:len(val)])
}
return ret
}
|
