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Explaining rationale and pros/cons behind encoding approach.

This commit is contained in:
Offray Vladimir Luna Cárdenas 2022-07-24 09:33:28 -05:00
parent 547bba2c14
commit c984b4768d
1 changed files with 10 additions and 5 deletions
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15
repository/TiddlyWiki/Tiddler.class.st
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@ -126,14 +126,19 @@ Tiddler >> createdAsTWFormat [
]
{ #category : #accessing }
Tiddler >> createdEncoded [
Tiddler >> createdReversableEncoded [
"I encode the tiddler creation date with miliseconds precision in a shorter reversable way
(from 17 characters to 10).
But when tiddlers are created with the same exact date (for example programmatically)
I produce the same encoding (because of reversability).
I recommend to use nanoID instead to get unique visible different identifiers "
| output longDate |
longDate := self createdAsTWFormat.
output := '' writeStream.
output := WriteStream on: ''.
1 to: 14 by: 2 do: [ :i |
output nextPutAll: (longDate copyFrom: i to: i +1 ) asInteger asCharacterDigit asString
output nextPutAll: (longDate copyFrom: i to: i +1) greaseInteger asCharacterDigit greaseString
].
output nextPutAll: ((longDate copyFrom: 15 to: 17)).
output nextPutAll: (longDate copyFrom: 15 to: 17).
^ output contents
]
@ -532,7 +537,7 @@ Tiddler >> uid [
Tiddler >> uidGenerator [
self created ifNil: [ self created: self class nowLocal ].
^ self customFields at: 'uid' put: self createdEncoded.
^ self customFields at: 'uid' put: self createdReversableEncoded.
]