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Improve date matching regular expressions #304

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Signed-off-by: Michael Mayer <michael@liquidbytes.net>
This commit is contained in:
Michael Mayer 2020-05-20 21:57:45 +02:00
parent 5f6c2af78e
commit a81fa0c959
2 changed files with 30 additions and 17 deletions
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12
pkg/txt/convert.go
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@ -6,10 +6,10 @@ import (
"time"
)
var DateRegexp = regexp.MustCompile("\\d{4}[\\-_]\\d{2}[\\-_]\\d{2}")
var DateCanonicalRegexp = regexp.MustCompile("\\d{8}_\\d{6}_\\w{8}\\.")
var DatePathRegexp = regexp.MustCompile("\\d{4}\\/\\d{1,2}\\/?\\d{0,2}")
var DateTimeRegexp = regexp.MustCompile("\\d{4}[\\-_]\\d{2}[\\-_]\\d{2}.{1,4}\\d{2}\\D\\d{2}\\D\\d{2}")
var DateRegexp = regexp.MustCompile("\\D\\d{4}[\\-_]\\d{2}[\\-_]\\d{2}\\D")
var DateCanonicalRegexp = regexp.MustCompile("\\D\\d{8}_\\d{6}_\\w+\\.")
var DatePathRegexp = regexp.MustCompile("\\D\\d{4}\\/\\d{1,2}\\/?\\d{0,2}\\D")
var DateTimeRegexp = regexp.MustCompile("\\D\\d{4}[\\-_]\\d{2}[\\-_]\\d{2}.{1,4}\\d{2}\\D\\d{2}\\D\\d{2}\\D")
var DateIntRegexp = regexp.MustCompile("\\d{1,4}")
var (
@ -40,8 +40,8 @@ func Time(s string) (result time.Time) {
b := []byte(s)
if found := DateCanonicalRegexp.Find(b); len(found) == 25 { // Is it a canonical name like "20120727_093920_97425909.jpg"?
if date, err := time.Parse("20060102_150405", string(found[0:15])); err == nil {
if found := DateCanonicalRegexp.Find(b); len(found) > 0 { // Is it a canonical name like "20120727_093920_97425909.jpg"?
if date, err := time.Parse("20060102_150405", string(found[1:16])); err == nil {
result = date.Round(time.Second).UTC()
}
} else if found := DateTimeRegexp.Find(b); len(found) > 0 { // Is it a date with time like "2020-01-30_09-57-18"?

35
pkg/txt/convert_test.go
View file

@ -7,9 +7,9 @@ import (
)
func TestTime(t *testing.T) {
t.Run("/2020_01_30/1212/20130518_142022_3D657EBD.jpg", func(t *testing.T) {
result := Time("/2020_01_30/1212/20130518_142022_3D657EBD.jpg")
assert.False(t, result.IsZero())
t.Run("/2020/1212/20130518_142022_3D657EBD.jpg", func(t *testing.T) {
result := Time("/2020/1212/20130518_142022_3D657EBD.jpg")
//assert.False(t, result.IsZero())
assert.Equal(t, "2013-05-18 14:20:22 +0000 UTC", result.String())
})
@ -49,26 +49,26 @@ func TestTime(t *testing.T) {
assert.Equal(t, "2019-05-21 00:00:00 +0000 UTC", result.String())
})
t.Run("2019-05-21", func(t *testing.T) {
result := Time("2019-05-21")
t.Run("/2019-05-21/file2314.JPG", func(t *testing.T) {
result := Time("/2019-05-21/file2314.JPG")
assert.False(t, result.IsZero())
assert.Equal(t, "2019-05-21 00:00:00 +0000 UTC", result.String())
})
t.Run("2019.05.21", func(t *testing.T) {
result := Time("2019.05.21")
t.Run("/2019.05.21", func(t *testing.T) {
result := Time("/2019.05.21")
assert.True(t, result.IsZero())
assert.Equal(t, "0001-01-01 00:00:00 +0000 UTC", result.String())
})
t.Run("05.21.2019", func(t *testing.T) {
result := Time("05.21.2019")
t.Run("/05.21.2019", func(t *testing.T) {
result := Time("/05.21.2019")
assert.True(t, result.IsZero())
assert.Equal(t, "0001-01-01 00:00:00 +0000 UTC", result.String())
})
t.Run("21.05.2019", func(t *testing.T) {
result := Time("21.05.2019")
t.Run("/21.05.2019", func(t *testing.T) {
result := Time("/21.05.2019")
assert.True(t, result.IsZero())
assert.Equal(t, "0001-01-01 00:00:00 +0000 UTC", result.String())
})
@ -87,6 +87,12 @@ func TestTime(t *testing.T) {
t.Run("2019/05/21", func(t *testing.T) {
result := Time("2019/05/21")
assert.True(t, result.IsZero())
assert.Equal(t, "0001-01-01 00:00:00 +0000 UTC", result.String())
})
t.Run("/2019/05/21/foo.txt", func(t *testing.T) {
result := Time("/2019/05/21/foo.txt")
assert.False(t, result.IsZero())
assert.Equal(t, "2019-05-21 00:00:00 +0000 UTC", result.String())
})
@ -126,6 +132,13 @@ func TestTime(t *testing.T) {
assert.True(t, result.IsZero())
assert.Equal(t, "0001-01-01 00:00:00 +0000 UTC", result.String())
})
t.Run("545452019/1/3/foo.jpg", func(t *testing.T) {
result := Time("/2019/1/3/foo.jpg")
assert.False(t, result.IsZero())
assert.Equal(t, "2019-01-03 00:00:00 +0000 UTC", result.String())
})
}
func TestInt(t *testing.T) {