#Regex

[clearlightwired]

having fun with the google vision API tool, i love panopticon world...

[track-maniac]

heartbreaking: girl writes [a-z1-9] in her regex instead of [a-z0-9], spends half an hour debugging the program that mysteriously broke at the 10th element

[nixcraft]

The plural of regex is regrets 😂

[fedora-official]

Who up regularising they expressions

[a-fox-studies]

some kind of day at the codeblr discord server

@orthogonal-slut @b8horpet @moose-mousse

the full series

[utopicwork]

Im going over regex fundamentals and if anyone could help I'm having trouble with this lesson:

I even had the solution it says is correct but it seems to not be accepting it?

[debian-official]

call me .+ the way i go dow- no i shan't say

[astercontrol]

Hey! Question for anyone out there who

is working on archiving stuff in case it gets lost, and

is more familiar with coding than I am.

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I've been backing up my Tumblr regularly for years now. I'm trying very hard to get into the habit of saving everything I create that's of value to me and NOT relying on a website I can't control to keep it saved…

And the problem with Tumblr's innate "download-a-backup" function is that once you've downloaded it, it seems you can't fully access it unless your Tumblr blog still exists and you have an internet connection capable of viewing it.

Which, like, defeats the whole purpose of a backup?

???

And there is no reason that HAS to be the case! The backup does download the text of all your posts, and a copy of every image you've ever posted! You CAN look at all these things individually, on your computer, in the backup folder you downloaded, without accessing the internet at all.

But for some incomprehensible reason, the backup doesn't create real links between them!

At least, not the images.

It does give you a whole lot of individual html documents containing the text of your posts. And it does give you a big "index" html document with links to all of those.

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And as far as I can tell, all of THAT works fine, whether you access it on your own private computer, or upload it all to your own self-hosted html website, or whatever.

But the images embedded in those posts are NOT the copies that you have in the big, huge, giant image folder that you went to all that trouble to download with your backup!

They're the copies that Tumblr still has stored on THEIR website somewhere.

And the images will not show up in your downloaded posts, unless 1. Tumblr still has that content from your Tumblr blog up on their site, and 2. you are connected to the internet to see it.

So… the whole Tumblr download thing feels kinda useless. Unless we can fix that.

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There are apparently other methods of downloading one's Tumblr blog. But from what I've read, the reliable methods that actually produce a usable archive with embedded images?... are methods that require using the command terminal on your computer.

I am not enough of a programmer to feel comfortable with that.

Maybe, if someone could give me good enough instructions that I could trust not to mess up other stuff on my computer in the process, I might try it.

But right now, I'm just focused on trying to fix the archive I already downloaded.

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The closest I get to being a programmer is editing html documents in a code editor. (I have BBEdit for Mac, the full paid version.)

And I've made some progress in learning GREP (regex) commands in there. Because that's basically an extra-specialized version of doing search-and-replace in a document, and the logic of it makes a lot of intuitive sense to me.

Anyway. To illustrate what I'm saying. Here is the link to a post of mine on Tumblr with 2 embedded images.

It is a slightly hornyish post, and LGBTQ-focused, and contains an image from a movie copyrighted by a very litigious corporation.

And I'm not saying any of that, in itself, is enough to fear for its continued existence on Tumblr.

BUT, I'm not saying I 100% trust Tumblr with it, either.

So.... because of that, and the fact that it contains two embedded images with different extensions.... it's a good example to run my tests on.

Here is a screenshot of what it looks like on Tumblr:

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Here is what the post looks like in the folders generated by the backup:

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The "style.css" document in the folder is what it uses for some of the formatting. Which is pretty, but not necessary.

Html documents stored on your computer can be opened in a web browser, same as websites. Here is what that html document looks like if I open it in Firefox-- while it's that same folder-- with my internet connection turned on.

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Here is what it looks like if I open it after moving it to a different folder-- internet connection still on, but no longer able to access that stylesheet document, because it's not in the same folder.

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Either one of those looks would be fine with me. (And the stylesheet doesn't NEED the connection to Tumblr or the internet at all, so it is a valid part of a working backup.)

But here's where the problem starts.

These are the two images that this post uses. They're in another folder within the backup folder I downloaded:

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But the downloaded html document of the post doesn't use them in the same way it uses the stylesheet.

It doesn't use them AT ALL.

Instead it uses whole different copies of them, from Tumblr's goddamn WEBSITE.

This is what the downloaded post looks like when I do NOT have an internet connection.

(First: from the same folder as the css stylesheet. Second: from a different folder without access to the stylesheet.)

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Without internet, it won't show the pictures.

There is NO REASON this has to happen.

And I should be able to fix it!

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This is what the code of that damn HTML page looks like, when I open it in my code editor.

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First, it contains a lot of stuff I don't need at all.

I want to get rid of all the "scrset" stuff, which is just to provide different options for optimizing the displayed size of the images, which is not particularly important to me.

Which I do using the Grep command (.*?) to stand in for all that.

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This, again, is basically just a search and replace. I'm telling the code editing program to find all instances of anything starting with srcset= and ending with a slash and close-caret, and replace each one with just the slash and close-caret.

This removes all the "srcset" nonsense from every image-embed.

Which makes my document easier for me to navigate, as I face the problem that the image-embeds still link to goddamn Tumblr.

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My goal here is to replace those Tumblr links:

img src="https://64.media.tumblr.com/887612a62e9cdc3869edfda8a8758b52/0eeed3a3d2907da3-7c/s640x960/8fe9aea80245956a302ea22e94dfbe2c3506c333.jpg"

and

img src="https://64.media.tumblr.com/67cdeb74e9481b772cfeb53176be9ad8/0eeed3a3d2907da3-c6/s640x960/785c70ca999dc44e4d539f1ad354040fd8ef8911.png"

with links to the actual images I downloaded.

Now, if I were uploading all this backup to my own personally-hosted site, I would want to upload the images into a folder there, and make the links use images from that folder on my website.

But for now, I'm going to try and just make them go to the folder I have on my computer right now.

So, for this document, I'll just manually replace each of those with img src="(the filename of the image)."

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Tumblr did at least do something to make this somewhat convenient:

it gave the images each the same filename as the post itself

except with the image extension instead of .html

(one of the images is a .jpg and the other is a .png)

and with numbers after the name (_0 and _1) to denote what order they're in.

This at least made the images easy to find.

And as long as I keep the images and the html post in the same folder--

and keep that folder within the same folder as a copy of the stylesheet--

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--then all the formatting works, without any need for a connection to Tumblr's website.

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Now.

If only I knew how to do that with ALL the posts in my archive, and ALL their embedded images.

And this is where my search-and-replace expertise has run out.

I know how to search and replace in multiple html documents at once. But I don't know how to do it for this specific task.

What I need, now, is a set of search-and-replace commands that can:

change every image-embed link in each one of those hundreds of html posts-- all that "https://64.media.tumblr.com/(two lines of random characters).(extension)" bullshit--

replacing the (two lines of random characters) with just the same text as the filename of whichever html document it's in.

then, add a number on the end of every filename in every image-embed-- so that within each html document, the first embed has a filename that ends in _0 before the image extension, and the second ends in _1, and so on.

I am fairly sure there ARE automated ways to do this. If not within the search-and-replace commands themselves, then some other option in the code editor.

Anyone have any insights here?

[nikjag]

everyday god tempts me to parse html or xml with regex

[dzamie-oc]

Not my usual fare, but I had to vent a bit. I wrote four of the seven regex strings in this image. If you can guess what I use the last one for, I'll, uh... idk, I'll let you pet a kobold.

[clearlightwired]

some appear to believe that washing dishes is basically a ritual action, i.e. the dish reaches a "washed" state once you have performed the actions of dish washing, involving dish soap and sponge, and that your obligation ceases once you have done this, and not at the point at which the dish is actually clean.

[nixcraft]

Want to validate email addresses "correctly" ?! here's the regex that matches the RFC:

[citg]

learning regex to sort siivagunner albums :3

[just-my-insufferable-existance]

Check out the regex crossword.

[ashtonfei]

Import HTML with Regex in Google Sheets with Chalkline Functions

[miquerinus]

I know it's late, but I couldn't miss the opportunity for the last meme of 2023 - which is true.