Add feature, Customizable [datetime] Format and Timezone for image filename

[w-e-w]

allows the user to customize the Format and Timezone of [datetime]

Syntex [datetime] [datetime<format>] [datetime<format><time zone>] [datetime<><time zone>]

e.g. [datetime] 20221022203816

[datetime<%Y_%m_%d %H-%M-%S><Asia/Tokyo>] 2022_10_22 20-38-16

a demo script can be found hear https://gist.github.com/w-e-w/ba208f745107316e0c084027e0c40a1f

this is a backwards compatible implementation

the original [datetime] behavior is preserved

test to be working, and did not find issue

using this as the pattern [datetime<%Y_%m_%d %H-%M-%S.%f><Asia/Tokyo>]_[steps]=[cfg]=[prompt]=[prompt_no_styles]=[prompt_spaces]=[width]=[height]=[styles]=[sampler]=[seed]=[model_hash]=[prompt_words]=[date]=[datetime]=[job_timestamp] resulting output

01034-2022_10_23 00-22-41.414133_3=7=(1girl),_(sitting)=(1girl), (sitting)=(1girl), (sitting)=64=64=None=Euler a=85172513=925997e9=1girl sitting=2022-10-23=20221023002241=20221023002232.png
01033-2022_10_23 00-22-41.406134_3=7=(1girl),_(sitting)=(1girl), (sitting)=(1girl), (sitting)=64=64=None=Euler a=85172512=925997e9=1girl sitting=2022-10-23=20221023002241=20221023002232.png
01032-2022_10_23 00-22-41.398135_3=7=(1girl),_(sitting)=(1girl), (sitting)=(1girl), (sitting)=64=64=None=Euler a=85172511=925997e9=1girl sitting=2022-10-23=20221023002241=20221023002232.png
01031-2022_10_23 00-22-41.379153_3=7=(1girl),_(sitting)=(1girl), (sitting)=(1girl), (sitting)=64=64=None=Euler a=85172510=925997e9=1girl sitting=2022-10-23=20221023002241=20221023002232.png

I used every pattern in the decorator and the output seems correct

notable changes

due to the formatting of datetime is case sensitive I have to rework apply_filename_pattern() so that it does not require the input pattern lowercase originally due to the use of str.replace() and if "sub str" in "str" being case sensitive the input pattern converted to do case before being input

due to time formatting, there is the need of preserving the Case of the pattern

so I replaced all str.replace() and `if "sub str" to its regular expression case insensitive equivalent

Further for proposal if this code is accepted

this is partially brought about by Feature #3322 I myself and many others might wish to use a time-based file name Prefix system

my reason being it would make sorting of images across different instances of stable-diffusion-webui much easier I use Google Colab and My own computer to run webui due to the way that the current naming system works there's a numbering prefex in the image file name 01234-seed-......png it is derived from the largest image numbering in the output folder this means that images created from different instances of webui will not be related as such it it is very troublesome to store thes images generated from different places together together

if I were to store the image in the same directory, I would get unrelated images interlaced between each other

and due to how currently the webui works the numbering Cannot be disabled by the user

I understand look need of a number system that ensures that file names will not be repeated

this is why I'm wish to propose a time based prefix system so that image is generated from different instances could be chronologically ordered

note: one could use the file creation dates modification date to order the images, but these dates can be unreliable

if you're willing to accept the proposal

I will be willing to work on it my intention is that

The user will have to enable such it, the current behavior is not changed

my current idea is to have some value in the config that user can adjust the padding of the numbering a padding a negative will disable the numbering system

additional file pattern [index<int>] that file decoration pattern this number serves a similar purpose as the current numbering the only difference is that the user can decide the location

if this were implemented, I would use a file pattern like [datetime<%Y_%m_%d %H-%M-%S><Asia/Tokyo>]-[index]=[seed]=[prompt_words] result will be 01046-2022_10_23 00-32-29-1=2287592556=1girl sitting.png

[w-e-w]

unrelated question I have made it PR #3218 fix img2img color correction only applying to the first image of a batch the code was approved by AUTOMATIC1111 but hasn't yet be merged and there's also no comments I'm left hanging wondering what's up am I doing something wrong or are you guys just still validating if it actually works?

what is the best way to have a discussion this repo is too crowded?

[w-e-w]

additional proposal

I don't think using square brackets for file decoration patterns is a good idea as [ ] square brackets are legal characters for windows filename I believe using < > is better

e.g. [seed] <seed>

yes, I am I'm aware tat switching from [] to <> will cause a breaking change to be honest, probably not worth the change so this is just a suggestion

[w-e-w]

in practice a file datetime pattern using %f Microsecond as a decimal number, zero-padded to 6 digits is basically enough to guarantee a file named is unique

[Datetime<%Y_%m_%d %H-%M-%S.%f><Asia/Tokyo>] 01004-2022_10_23 01-46-18.764579.png 01005-2022_10_23 01-46-19.095578.png 01006-2022_10_23 01-46-19.103577.png 01007-2022_10_23 01-46-19.142579.png 01008-2022_10_23 01-46-19.222578.png 01009-2022_10_23 01-46-19.265577.png 01010-2022_10_23 01-46-19.273577.png 01011-2022_10_23 01-46-20.061579.png

these images are generated in a single batch of size 8 using the minimal resolution of 64x64 the UI is able to save the images without issue even under these condition

[w-e-w]

this PR will have a slight merge conflict with PR #3397 add unixtime support on filename due to the modification done to apply_filename_pattern()