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Improve CLI tool for example usage
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Aaron Raddon
parent
882d5c810b
commit
82e967717c
@ -32,6 +32,12 @@ t, err := dateparse.ParseLocal("3/1/2014")
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```
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cli tool for testing dateformats
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----------------------------------
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[Date Parse CLI](https://github.com/araddon/dateparse/blob/master/dateparse)
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Extended example https://github.com/araddon/dateparse/blob/master/example/main.go
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```go
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package main
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@ -1,17 +1,45 @@
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DateParse CLI
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----------------------
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Simple CLI to test out dateparse.
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```sh
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# Since this date string has no timezone/offset so is more effected by
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# which method you use to parse
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$ dateparse --timezone="America/Denver" "2017-07-19 03:21:00"
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+------------+---------------------+---------------+----------+-------------------------------+
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| method | Input | Zone Source | Timezone | Parsed, and Output as %v |
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+------------+---------------------+---------------+----------+-------------------------------+
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| ParseAny | 2017-07-19 03:21:00 | Local Default | PDT | 2017-07-19 03:21:00 +0000 UTC |
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| ParseAny | 2017-07-19 03:21:00 | timezone arg | PDT | 2017-07-19 03:21:00 +0000 UTC |
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| ParseAny | 2017-07-19 03:21:00 | UTC | UTC | 2017-07-19 03:21:00 +0000 UTC |
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| ParseIn | 2017-07-19 03:21:00 | Local Default | PDT | 2017-07-19 03:21:00 +0000 UTC |
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| ParseIn | 2017-07-19 03:21:00 | timezone arg | PDT | 2017-07-19 03:21:00 -0600 MDT |
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| ParseIn | 2017-07-19 03:21:00 | UTC | UTC | 2017-07-19 03:21:00 +0000 UTC |
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| ParseLocal | 2017-07-19 03:21:00 | Local Default | PDT | 2017-07-19 03:21:00 +0000 UTC |
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| ParseLocal | 2017-07-19 03:21:00 | timezone arg | PDT | 2017-07-19 03:21:00 -0600 MDT |
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| ParseLocal | 2017-07-19 03:21:00 | UTC | UTC | 2017-07-19 03:21:00 +0000 UTC |
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+------------+---------------------+---------------+----------+-------------------------------+
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# Note on this one that the outputed zone is always UTC/0 offset as opposed to above
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$ dateparse --timezone="America/Denver" "2017-07-19 03:21:51+00:00"
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+---------------------------+---------------+----------------+---------------------------------+
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| Input | Zone Source | Timezone | Parsed, and Output as %v |
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+---------------------------+---------------+----------------+---------------------------------+
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| 2017-07-19 03:21:51+00:00 | Local Default | PDT | 2017-07-19 03:21:51 +0000 +0000 |
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| 2017-07-19 03:21:51+00:00 | timezone arg | America/Denver | 2017-07-19 03:21:51 +0000 +0000 |
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| 2017-07-19 03:21:51+00:00 | UTC | UTC | 2017-07-19 03:21:51 +0000 UTC |
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+---------------------------+---------------+----------------+---------------------------------+
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+------------+---------------------------+---------------+----------+---------------------------------+
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| method | Input | Zone Source | Timezone | Parsed, and Output as %v |
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+------------+---------------------------+---------------+----------+---------------------------------+
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| ParseAny | 2017-07-19 03:21:51+00:00 | Local Default | PDT | 2017-07-19 03:21:51 +0000 UTC |
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| ParseAny | 2017-07-19 03:21:51+00:00 | timezone arg | PDT | 2017-07-19 03:21:51 +0000 UTC |
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| ParseAny | 2017-07-19 03:21:51+00:00 | UTC | UTC | 2017-07-19 03:21:51 +0000 UTC |
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| ParseIn | 2017-07-19 03:21:51+00:00 | Local Default | PDT | 2017-07-19 03:21:51 +0000 UTC |
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| ParseIn | 2017-07-19 03:21:51+00:00 | timezone arg | PDT | 2017-07-19 03:21:51 +0000 +0000 |
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| ParseIn | 2017-07-19 03:21:51+00:00 | UTC | UTC | 2017-07-19 03:21:51 +0000 UTC |
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| ParseLocal | 2017-07-19 03:21:51+00:00 | Local Default | PDT | 2017-07-19 03:21:51 +0000 UTC |
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| ParseLocal | 2017-07-19 03:21:51+00:00 | timezone arg | PDT | 2017-07-19 03:21:51 +0000 +0000 |
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| ParseLocal | 2017-07-19 03:21:51+00:00 | UTC | UTC | 2017-07-19 03:21:51 +0000 UTC |
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+------------+---------------------------+---------------+----------+---------------------------------+
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```
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@ -19,32 +19,66 @@ func main() {
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flag.Parse()
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if len(flag.Args()) == 0 {
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fmt.Println(`Must pass ./dateparse "2009-08-12T22:15:09.99Z"`)
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fmt.Println(`Must pass a time, and optional location:
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./dateparse "2009-08-12T22:15:09.99Z"
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./dateparse --timezone="America/Denver" "2017-07-19 03:21:51+00:00"
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`)
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return
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}
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datestr = flag.Args()[0]
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table := termtables.CreateTable()
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table.AddHeaders("Input", "Zone Source", "Timezone", "Parsed, and Output as %v")
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zonename, _ := time.Now().In(time.Local).Zone()
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table.AddRow(datestr, "Local Default", fmt.Sprintf("%v", zonename), fmt.Sprintf("%v", dateparse.MustParse(datestr)))
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var loc *time.Location
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if timezone != "" {
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// NOTE: This is very, very important to understand
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// time-parsing in go
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loc, err := time.LoadLocation(timezone)
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l, err := time.LoadLocation(timezone)
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if err != nil {
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panic(err.Error())
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}
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time.Local = loc
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table.AddRow(datestr, "timezone arg", fmt.Sprintf("%v", timezone), fmt.Sprintf("%v", dateparse.MustParse(datestr)))
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loc = l
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}
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table := termtables.CreateTable()
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table.AddHeaders("method", "Input", "Zone Source", "Timezone", "Parsed, and Output as %v")
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parsers := map[string]parser{
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"ParseAny": parseAny,
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"ParseIn": parseIn,
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"ParseLocal": parseLocal,
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}
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zonename, _ := time.Now().In(time.Local).Zone()
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for name, parser := range parsers {
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time.Local = nil
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table.AddRow(name, datestr, "Local Default", zonename, parser(datestr, nil))
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if timezone != "" {
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table.AddRow(name, datestr, "timezone arg", zonename, parser(datestr, loc))
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}
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time.Local = time.UTC
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table.AddRow(datestr, "UTC", "UTC", fmt.Sprintf("%v", dateparse.MustParse(datestr)))
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table.AddRow(name, datestr, "UTC", "UTC", parser(datestr, time.UTC))
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}
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fmt.Println(table.Render())
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}
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type parser func(datestr string, loc *time.Location) string
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func parseLocal(datestr string, loc *time.Location) string {
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time.Local = loc
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t, _ := dateparse.ParseLocal(datestr)
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return t.String()
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}
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func parseIn(datestr string, loc *time.Location) string {
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t, _ := dateparse.ParseIn(datestr, loc)
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return t.String()
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}
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func parseAny(datestr string, loc *time.Location) string {
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t, _ := dateparse.ParseAny(datestr)
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return t.String()
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}
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