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Fix U.S. PROB group handling and trim RMK from remark

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Elara 2023-08-26 10:22:42 -07:00
parent 52fb856f9b
commit 486688e72a
3 changed files with 6 additions and 29 deletions
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2
internal/parser/lexer.go
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@ -6,7 +6,7 @@ import (
var lex = lexer.MustSimple([]lexer.SimpleRule{
{Name: "header", Pattern: `TAF (AMD|COR)? ?`},
{Name: "Remark", Pattern: `RMK .*`},
{Name: "Remark", Pattern: `RMK[^\n]*`},
{Name: "Number", Pattern: `\d+`},
{Name: "Modifier", Pattern: `[+-]|VC`},
{Name: "Prob", Pattern: "PROB"},

4
internal/parser/parser.go
View File

@ -34,8 +34,8 @@ type ValidPair struct {
type Probability struct {
Pos lexer.Position
Value string `Prob @Number`
Time string `(WS @Number)?`
Value string `Prob @Number`
Valid ValidPair `(WS @@)?`
}
type WindSpeed struct {

29
taf.go
View File

@ -322,7 +322,7 @@ func DecodeWithOptions(r io.Reader, opts Options) (*Forecast, error) {
case item.Probability != nil:
// If the time is empty, this probability belongs to the
// next change.
if item.Probability.Time == "" {
if item.Probability.Valid.Start == "" {
prob, err := strconv.Atoi(item.Probability.Value)
if err != nil {
return nil, participle.Errorf(item.Probability.Pos, "prob: %s", err)
@ -332,34 +332,11 @@ func DecodeWithOptions(r io.Reader, opts Options) (*Forecast, error) {
} else {
pr := &Probability{}
// The probability time string must have 4 characters,
// 2 for starting time and 2 for ending time
if len(item.Probability.Time) < 4 {
return nil, participle.Errorf(item.Probability.Pos, "prob: invalid time %q", item.Probability.Time)
}
startStr := item.Probability.Time[:2]
endStr := item.Probability.Time[2:]
start, err := strconv.Atoi(startStr)
pr.Valid, err = parseValid(&item.Probability.Valid, opts.Month, opts.Year)
if err != nil {
return nil, participle.Errorf(item.Probability.Pos, "prob: %s", err)
}
end, err := strconv.Atoi(endStr)
if err != nil {
return nil, participle.Errorf(item.Probability.Pos, "prob: %s", err)
}
t := fc.PublishTime
pr.Valid = ValidPair{
From: time.Date(t.Year(), t.Month(), t.Day(), start, 0, 0, 0, time.UTC),
To: time.Date(t.Year(), t.Month(), t.Day(), end, 0, 0, 0, time.UTC),
}
// Get the duration by subtracting the from time from the to time
pr.Valid.Duration = pr.Valid.To.Sub(pr.Valid.From)
fc.Probabilities = append(fc.Probabilities, pr)
// Set out to the probability value so that future mutations
@ -367,7 +344,7 @@ func DecodeWithOptions(r io.Reader, opts Options) (*Forecast, error) {
out = reflect.ValueOf(pr).Elem()
}
case item.Remark != nil:
fc.Remark = *item.Remark
fc.Remark = strings.TrimSpace(strings.TrimPrefix(*item.Remark, "RMK"))
}
}