[HN Gopher] Regex2fat: Turn your favorite regex into FAT32
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Regex2fat: Turn your favorite regex into FAT32
Author : beefhash
Score : 256 points
Date : 2020-04-15 14:53 UTC (8 hours ago)
(HTM) web link (github.com)
(TXT) w3m dump (github.com)
| bryan_w wrote:
| This reminds me of that Lewis black bit, "If it weren't for my
| horse, I never would have spent that year in college".
|
| I saw the words, but my brain couldn't process them, no matter
| how many times I tried.
|
| If I die of an aneurysm, regex2fat will probably be the reason
| why
| TeMPOraL wrote:
| I don't understand, what's the deal with that Lewis sentence?
|
| It seems pretty straightforward to parse. I read it as:
| if(!somethingAboutMyHorse) { // ? Road not taken.
| } else { //Spend a year in college. }
| projektfu wrote:
| Without being able to process the words in some way, put them
| into context, it can cause an aneurism to rupture in his
| brain.
| ssalazar wrote:
| Never heard this before but despite being grammatically
| sound, I guess the events that would lead to someone
| truthfully saying it are meant to defy reason.
| nathancahill wrote:
| The horse raced past the barn fell.
| superasn wrote:
| What happens if I my regex contains aux.h?
| klodolph wrote:
| It will show up as something like /A/U/X/DOT/H
| the8472 wrote:
| Add the file namespace prefix
|
| https://docs.microsoft.com/en-us/windows/win32/fileio/naming...
| [deleted]
| sunsu wrote:
| All In: "Haha OS-driven regex engine go brrrrr"
| nayuki wrote:
| Indeed, a current meme. https://knowyourmeme.com/memes/money-
| printer-go-brrr
| wmu wrote:
| There's the first issue: "`regex2fat` is nine characters long"
| (https://github.com/8051Enthusiast/regex2fat/issues/1) :)
| Xenograph wrote:
| Could someone explain the joke?
| binarytox1n wrote:
| https://en.wikipedia.org/wiki/8.3_filename
|
| > "A SFN filename can have at most 8 characters before the
| dot. If it has more than that, the first 6 must be written,
| then a tilde '~' as the seventh character and a number
| (usually 1) as the eighth. The number distinguishes it from
| other files with both the same first six letters and the same
| extension."
| why-oh-why wrote:
| It's a fat joke.
| Darkphibre wrote:
| I read this first as "Turning your Registry into FAT32" and
| thought... oh, no. You do _not_ want to do that.
|
| Regex though... this is humorous.
| acheron wrote:
| Now you have... quite a few problems.
| Aloha wrote:
| This strikes me as a project that was created while drunk or
| high, probably high, possibly both.
| asdfman123 wrote:
| I don't know about you, but some of us can generate a rich
| stream of dumb and useless ideas without the aid of substances.
| Aloha wrote:
| I can generate those ideas sober just fine, its the _doing_
| them part that requires the substances.
| [deleted]
| elteto wrote:
| He must have reached Ballmer's Peak (https://xkcd.com/323/)
| [deleted]
| duskwuff wrote:
| This is a horrifying abuse of a filesystem, and I love it.
| a_c wrote:
| Hey thanks for the project! I (thought I) know what regex is, and
| I (thought I) know what FAT32 is. But Bamm! putting the two
| together, the whole sentence makes no sense to me.
|
| This is genius.
| yjftsjthsd-h wrote:
| > Q: Should I use this in production^w^w anywhere?
|
| > A: No, but I can't stop you.
|
| The motto of so many of the best projects:)
| buildbot wrote:
| This is hilarious! I was excited hoping that it was a fuse file
| system that let you mount a view of another file system with
| regex though, something that would be a pretty useful tool.
| fit2rule wrote:
| I also wondered the same .. if it weren't some generalised way
| to apply regex to implement FAT32 (read and write) .. instead I
| think its a mapping of DFA to dentry semantics. Still pretty
| neat.
| codegladiator wrote:
| Can I parse HTML with this ?
| jasonjayr wrote:
| https://stackoverflow.com/questions/1732348/regex-match-open...
| brazzy wrote:
| Only if you are adequately insured against the accidental
| summoning of a Great Old One.
| rwmj wrote:
| If you think this is crazy, check out the VVFAT driver in
| qemu[1]. At first sight it seems simple enough - turn a host
| directory into a virtual FAT filesystem which is presented to the
| guest.
|
| The clever/insane thing is it supports writes. It is able to
| "reverse" those block level operations from the guest to modify
| the source filesystem on the host.
|
| It was written by the ever exceptional Fabrice Bellard. EDIT: No
| it wasn't, it was written by Johannes Schindelin, thanks for the
| clarification in replies.
|
| [1] https://github.com/qemu/qemu/blob/master/block/vvfat.c
| beholder1 wrote:
| I see another name as author and no trace of Fabrice in
| history. Can you elaborate please?
| loeg wrote:
| QEMU itself came from Bellard originally, but I believe you
| are correct that the RO and RW vvfat support came from
| Johannes Schindelin:
|
| https://github.com/qemu/qemu/commit/de167e416fa3d6e4bbdcac90.
| ..
|
| https://github.com/qemu/qemu/commit/a046433a161a1f554be55df8.
| ..
| lifthrasiir wrote:
| > It was written by the ever exceptional Fabrice Bellard.
|
| I think it is rather by Johannes Schindelin [1].
|
| [1]
| https://github.com/qemu/qemu/commit/de167e416fa3d6e4bbdcac90...
| yellowapple wrote:
| On the other hand, I don't think we've ever seen Fabrice
| Bellard and Johannes Schindelin in the same room together.
| lifthrasiir wrote:
| That is... compelling, I admit, as Bellard was known for
| his use of various pseudonyms (e.g. Gerard Lantau for
| FFmpeg). But I guess Schindelin now works for Microsoft
| while Bellard still works for Amarisoft [1], right?
|
| [1] https://www.amarisoft.com/about-us/
| giantrobot wrote:
| But if you rearrange, remove, and then add some letters
| to Amerisoft it spells MicroSoft. The implication is
| clear.
| russtrotter wrote:
| I love these kinds of projects! Any description of it that has me
| cackling by the 2nd sentence is gonna be a gem. Good thing i
| brought my FAT32 driver.
| Rokid wrote:
| What is this? I'm so curious but nothing of this rings a bell
| with me. I mean I know what a regular expression is, and I've
| formatted several USBs to FAT32, but DFAs and everything in
| between have me Googling like crazy, still in the dark though.
| slondr wrote:
| RegExp and DFAs are the same computation class, so it's useful
| sometimes to model them as each other.
| Pmop wrote:
| No idea why you're being downvoted. Also, classical comp. sci
| technique of reducing your problem into another that's
| already been solved (with good enough time/mem bounds).
| nicholaides wrote:
| It converts your regexp into a virtual filesystem and then you
| can test if a string matches the regexp by converting the
| string into a path and testing if that path is contained in the
| filesystem.
| itronitron wrote:
| Presumably this is useful if you can place files into (or
| modify a file at) the location for a particular regexp.
| Someone wrote:
| That wouldn't work. This works by hard linking a lot of
| directories to each other, so if you were to write a file
| there, it ends up in multiple locations (possibly all
| 'directories' in the file system)
|
| The file system could work around that by creating new
| unique directories whenever you write any file to an empty
| directory, but that would require it to keep the regular
| expression it represents around, and would fill up the file
| system quite rapidly.
| adrianmonk wrote:
| This was what made it all make sense for me:
|
| https://perl.plover.com/Regex/article.html
| jimrandomh wrote:
| I think this could also be built out of symlinks in a Linux
| filesystem. This would be slightly more practical (though, of
| course, still not practical at all).
| gumby wrote:
| "Slightly more expressive" as you can create longer filenames
| with most Linux filesystems and more entries too.
|
| I like that phrase as it sounds like "better" when we're
| talking about, as you say, something wonderfully useless.
| Dylan16807 wrote:
| As long as you don't mind the depth limit of 40 symlinks on
| Linux and I think 31 on Windows.
| sonofgod wrote:
| /A/A/A/A/A/A/A/A/A/A/A/A/A/H/H/H/H/MATCH
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(page generated 2020-04-15 23:00 UTC)