| --- Log opened Sat Mar 27 00:00:47 2010 |
| 00:25 | | AnnoDomini [annodomini@Nightstar-4a48ec6d.adsl.tpnet.pl] has quit [[NS] Quit: DEATH.] |
| 01:07 | | You're now known as TheWatcher[T-2] |
| 01:11 | | You're now known as TheWatcher[zZzZ] |
| 01:45 | | Thaqui [Thaqui@27B34E.D54D49.F53FA1.6A113C] has joined #code |
| 02:06 | < Orthia> | hm. |
| 02:07 | | * Orthia continues to battle against the evils of file IO. |
| 02:07 | <@Vornicus> | FileInputStream, FileOutputStream |
| 02:07 | <@Vornicus> | They're byte streams. |
| 02:07 | <@Vornicus> | You should be able to just open one and use it. |
| 02:22 | <@Vornicus> | If that's hard there's something wrong. |
| 02:24 | < Orthia> | Oh, cool. |
| 02:28 | | Attilla [Attilla@FBC920.482E2D.82B33A.EBFF0B] has quit [[NS] Quit: ] |
| 02:35 | < Orthia> | hmmm |
| 02:35 | < Orthia> | Every example of InputStreams has them read the stuff in, Do Something With It, then move on |
| 02:36 | < Orthia> | I am actually iterating through the input stream via the LZW class itself? |
| 02:38 | <@Vornicus> | Yes. |
| 02:39 | <@Vornicus> | (btw your "pipe" ability will be to, if no input file is specified, use system.in instead) |
| 02:40 | < Orthia> | (hm, that would sit in the main, I presume, not the FileLoader) |
| 02:41 | <@Vornicus> | FileLoader? what the hell are you doing? |
| 02:42 | < Orthia> | making a class to handle file IO. |
| 02:42 | | gnolam [lenin@Nightstar-38637aa0.priv.bahnhof.se] has quit [[NS] Quit: Z?] |
| 02:44 | < celticminstrel> | Are you sure it's not System.stdin? |
| 02:44 | < celticminstrel> | And what's wrong with the InputStream class(es) for handling file IO? |
| 02:45 | < Orthia> | I have no idea? >_> |
| 02:45 | < celticminstrel> | If you do want to make file IO class(es), though, the logical route would be to create InLZWStream extends InputStream and OutLZWStream extends OutputStream. |
| 02:46 | < celticminstrel> | (or some such thing) |
| 02:46 | < celticminstrel> | What does your FileLoader class actually do? |
| 02:48 | < Orthia> | Er. Well, it's actually called FileHandler |
| 02:48 | < Orthia> | And it reads and writes files. |
| 02:48 | < celticminstrel> | Is it big? |
| 02:49 | < celticminstrel> | What's the interface (public methods)? |
| 02:49 | < celticminstrel> | (By the way, is there such a thing as InputOutputStream?) |
| 02:50 | < celticminstrel> | (Or something like that?) |
| 02:50 | <@Vornicus> | celmin: not that I'm aware of. |
| 02:50 | <@Vornicus> | Orthia: the LZW encoder and decoder we built are designed to take files directly. |
| 02:50 | < celticminstrel> | That's silly. C++ has it. Python has it... |
| 02:50 | <@Vornicus> | You pass a file object in, and it will do the reading and writing. |
| 02:51 | < celticminstrel> | A file object? Is that the same as a stream object? |
| 02:51 | <@Vornicus> | celmin: yeah, same thing. |
| 02:52 | <@Vornicus> | oh, there is RandomAccessFile |
| 03:20 | | * Orthia considers. This ... probably didn't need a whole class, did it. |
| 03:20 | < Orthia> | public FileInputStream loadRaw() throws FileNotFoundException { |
| 03:20 | < Orthia> | FileInputStream in = new FileInputStream(filename); |
| 03:20 | < Orthia> | return in; |
| 03:20 | < Orthia> | } |
| 03:20 | < Orthia> | (Most times in Java, this ends up Leeging Huge as it includes all the parsing and stuff. |
| 03:30 | <@Vornicus> | Yeah, no, don't need that. |
| 03:30 | <@Vornicus> | Just do it in main. |
| 03:30 | <@Vornicus> | and catch the FNF and whatever |
| 03:35 | < Orthia> | OK |
| 03:37 | < Orthia> | So, am I able to have two Main? |
| 03:37 | < Orthia> | One for packing, one for unpacking? |
| 03:37 | < celticminstrel> | Um. What? |
| 03:37 | < celticminstrel> | You mean two main functions? |
| 03:37 | < Orthia> | No, but I'm supposed to have the pack and unpack routines able to be called seperately. |
| 03:38 | < celticminstrel> | Any class can have a main function. |
| 03:38 | < celticminstrel> | So, if you were to put a main in the packing class and a main in the unpacking class, you could run either class from the command-line... |
| 03:39 | < celticminstrel> | ...but I've no idea if that's what you mean. |
| 03:39 | <@McMartin> | That's true |
| 03:39 | <@McMartin> | a .jar file, however, still TMK requires a unique "main class" which you specify as metadata |
| 03:40 | <@McMartin> | (It's actually traditional to have your data/support classes have main methods that run unit tests or demos in some disciplines) |
| 03:40 | <@Vornicus> | Orthia: I'd make it so you have two classes with main in them, both of which talk to your LZW class. If you need two programs. |
| 03:40 | <@Vornicus> | Honestly I'd make it one program with a flag. |
| 03:40 | < jerith> | -c and -x or whatever. |
| 03:43 | < Orthia> | Vorn: OK, we will see how I go |
| 03:44 | < Orthia> | Wasn't sure how the static main method interfered between classes. |
| 03:44 | < celticminstrel> | It doesn't. |
| 03:44 | < celticminstrel> | It's just an ordinary method, really. |
| 03:45 | < celticminstrel> | Except that in the ... um ... initially-loaded class? ... it becomes the main entry point. |
| 03:49 | <@Vornicus> | What celmin said. |
| 03:50 | <@Vornicus> | If you do java foo.class you'll end up running the main for that class. |
| 03:50 | <@Vornicus> | jars have a manifest which tells it which class to run. |
| 03:51 | <@McMartin> | And you can override that on the command line if you awnt. |
| 03:51 | <@McMartin> | *want |
| 03:52 | <@Vornicus> | Indeed |
| 03:57 | < Orthia> | OK, that's handy. Cheers. |
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| 04:14 | | * Orthia haaaate try/catch |
| 04:15 | < Orthia> | http://pastebin.starforge.co.uk/198 |
| 04:17 | < Orthia> | Error in the comment line. |
| 04:17 | | * celticminstrel clicks... |
| 04:21 | < celticminstrel> | Line 29? |
| 04:22 | < Orthia> | 29-32 all come up as invalid, but I think it's line 29 doing it, yeah |
| 04:22 | < celticminstrel> | Well, that "return in" statement should not be there. |
| 04:23 | <@Vornicus> | FileInputStream |
| 04:23 | <@Vornicus> | InputStream is abstract. |
| 04:23 | < celticminstrel> | Ah yes. That too. |
| 04:23 | <@Vornicus> | FileInputStream is a concrete subclass. |
| 04:24 | < celticminstrel> | I forgot about that. It's been a while since I used Java... |
| 04:24 | < celticminstrel> | You don't need that throws clause either. |
| 04:25 | < celticminstrel> | As for try...catch...finally... |
| 04:26 | < celticminstrel> | http://pastebin.starforge.co.uk/199 |
| 04:27 | < celticminstrel> | Though that might be problematic actually... |
| 04:28 | < celticminstrel> | I guess it depends how Java handles an attempt to close a stream that is already closed. If it just ignores it, then that change I made should be fine. |
| 04:29 | < Namegduf> | I believe it forces you to catch IOException on close() |
| 04:29 | < celticminstrel> | If not, the close should go both in the main try block (and possibly the catch block if the exception is something other than file not found) and omit the finally block. |
| 04:29 | < celticminstrel> | ^scratch the "both" |
| 04:36 | < Orthia> | GOTCHA |
| 04:36 | < Orthia> | } catch (FileNotFoundException e) { |
| 04:36 | < Orthia> | Silly syntax error. |
| 04:36 | < celticminstrel> | What did you have? |
| 04:36 | < Orthia> | I lacked the brackets. |
| 04:37 | < Orthia> | Vorn: Would closing the input stream break my code? |
| 04:37 | < celticminstrel> | Oh! Wow. |
| 04:37 | < celticminstrel> | Only if you close it before you do whatever you're doing with it. |
| 04:41 | <@Vornicus> | shouldn't, but make sure you're done with the file. |
| 04:41 | <@Vornicus> | http://java.sun.com/j2se/1.5.0/docs/api/java/io/Closeable.html#close() "if the stream is already closed then invoking this method has no effect." |
| 04:42 | < celticminstrel> | Then it is best invoked in the finally clause. |
| 04:42 | < Orthia> | nein |
| 04:42 | < celticminstrel> | (As far as I'm aware, the "finally" clause is roughly equivalent to C++ destructors in terms of what to use it for.) |
| 04:43 | < celticminstrel> | No what? |
| 04:43 | < Orthia> | Finally is a bad place for it. |
| 04:43 | < celticminstrel> | Why? |
| 04:43 | < Orthia> | Demands it be surrounded ... by a try/catch for FileNotFound. :) |
| 04:43 | < celticminstrel> | Um, what? |
| 04:43 | < Orthia> | The exception we just caught? |
| 04:44 | < Orthia> | http://pastebin.starforge.co.uk/201 - VICTOLY |
| 04:44 | < Orthia> | I think. |
| 04:44 | < celticminstrel> | What about the exception we caught? |
| 04:44 | | * Orthia laughs. |
| 04:44 | <@Vornicus> | IOExceptions can happen with close but damned if I know why. |
| 04:44 | < celticminstrel> | The close() call should really go in the finally clause. |
| 04:45 | < Orthia> | OK: in.close(); is a command that requires it be surrounded by a try/catch block for FileNotFoundException. Which was the try/catch block we've added the 'finally' to. |
| 04:45 | < celticminstrel> | If that causes an error, put it in the throws clause. |
| 04:45 | <@Vornicus> | not FNF, IOException |
| 04:45 | < Orthia> | Aha, okay. Still. |
| 04:45 | < celticminstrel> | int main( ... ) throws IOException |
| 04:45 | < Orthia> | I already have a catch block for that one too. |
| 04:45 | < celticminstrel> | Then you won't need the try-catch block around close(). |
| 04:45 | <@Vornicus> | works |
| 04:46 | < Orthia> | Anyway: Code above. Vorn: Is it terrible? |
| 04:46 | < celticminstrel> | But the thing with close is that you want it to run if an exception was caught. |
| 04:46 | < celticminstrel> | (Except if the exception was an IOException, it doesn't matter.) |
| 04:47 | < celticminstrel> | You don't really need to initialize in to null, though I guess it doesn't hurt. |
| 04:47 | < celticminstrel> | But apart from close(), I can't see anything to change. |
| 04:48 | < Orthia> | I can, kinda. Would be nice if my encoder actually wrote any damn thing out the other end, eh? |
| 04:48 | | * Orthia ponders how best to do that. Apparently he's meant to make this thing able to pipe as well. |
| 04:48 | < celticminstrel> | Huh? |
| 04:48 | < celticminstrel> | Making it able to pipe is easy. |
| 04:48 | < celticminstrel> | First, declare "in" as an InputStream instead of a FileInputStream. |
| 04:49 | < celticminstrel> | Then, if no file is specified, set "in = System.stdin" or whatever Java calls the standard input. |
| 04:49 | < celticminstrel> | Otherwise, do exactly what you're doing now. |
| 04:50 | < celticminstrel> | ...does that make sense? |
| 04:51 | < Orthia> | Sure does! |
| 04:51 | < celticminstrel> | As long as it reads from stdin and writes to stdout, you can pipe to and from it. |
| 04:52 | < celticminstrel> | In fact, it would probably be sufficient to always read from stdin and write to stdout, since you can use redirections if you need to read or write from a file... |
| 04:53 | < Orthia> | so, uh |
| 04:53 | < Orthia> | hm |
| 04:54 | < Orthia> | Which Input model would I want to be doing that with? |
| 04:54 | < celticminstrel> | Doing what which where now? |
| 04:54 | < Orthia> | Well, I clearly don't want FileInputStream, do I. |
| 04:54 | < celticminstrel> | Just declare in as an InputStream, and you can assign any type of input stream to it. |
| 04:55 | < celticminstrel> | I'm not really sure what the type of System.stdin (or is it System.in?) is, but it doesn't really matter. |
| 04:59 | < Orthia> | OK, so |
| 04:59 | < Orthia> | How do I get my program to tell if it is being fed standard input instead of a filename? Is there a trick for my commandline reader? |
| 05:02 | <@Vornicus> | system.in and system.out |
| 05:02 | <@Vornicus> | That's a trick for your command line reader. |
| 05:02 | <@Vornicus> | If you don't get a filename, get system.in (or system.out) instead. |
| 05:04 | < celticminstrel> | System, not system. |
| 05:05 | < celticminstrel> | And your program doesn't particularly care whether it is being fed standard input or a file, as long as all relevant functions take InputStream as a parameter. |
| 05:05 | <@Vornicus> | indeed. |
| 05:05 | < Orthia> | So the commandline thing will be "lzwencoder system.in -b 14" ? |
| 05:06 | < celticminstrel> | No. |
| 05:06 | < celticminstrel> | It won't receive a file parameter at all. |
| 05:06 | < celticminstrel> | When it doesn't receive a file parameter, it should default to System.in. |
| 05:06 | < Orthia> | ahh, so if filename == null, proceed with system input? |
| 05:06 | < Orthia> | hm |
| 05:06 | < Orthia> | In that case, I could easily enough set in to /default/ to system input, and only change when told to? |
| 05:07 | < celticminstrel> | Not quite, more like "if args.length < 2" or something similar. |
| 05:07 | < celticminstrel> | Yes, you could do that. |
| 05:09 | < Orthia> | hm |
| 05:10 | < Orthia> | So how do I write to standard output? |
| 05:10 | <@McMartin> | System.out.println("lolpwnt"); |
| 05:10 | < celticminstrel> | Much the same way; instead of opening a new FileInputStream, set your out variable (declared as an OutputStream) to System.out. |
| 05:10 | < Orthia> | aha |
| 05:11 | < Orthia> | ... aha, I think I see how one does this then. |
| 05:11 | < celticminstrel> | You might not want println though; there's also printf and write at your disposal if I recall correctly. |
| 05:11 | < Orthia> | I come to think that perhaps I should have had a read/writer class afterall; this function is going to be pretty standardised. OTOH, that could just mean I want an extra arguement. Hmm. Will fiddle with that once it Works. |
| 05:16 | < Orthia> | http://pastebin.starforge.co.uk/202 - 1) So far so good? 2) Do I want to put the file /output/ in 48 or 56? |
| 05:17 | < Orthia> | 48 has the convinience of a million catch blocks to begin with. But I'm not sure that's actually an advantage. >_> |
| 05:19 | < celticminstrel> | I feel like you'll get an out of bounds exception if you try to run that with no input file. |
| 05:24 | | * Orthia wonders why? |
| 05:28 | < celticminstrel> | Oh wait. |
| 05:28 | < celticminstrel> | I'm wrong. |
| 05:29 | < celticminstrel> | Though, your maxTrieSize bit could, if they passed the -b flag but didn't actually specify a number after it. |
| 05:30 | < Orthia> | A point. |
| 05:31 | < Orthia> | I don't think I care enough about that bit though, sloppy as it may be~ |
| 05:31 | < celticminstrel> | Always assume your users are morons. ;) |
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| 05:38 | < Orthia> | I will worry about the users being morons once the programmer is not being one himself~ |
| 05:38 | < Orthia> | Which line should I be putting the output? In the middle of the try/catch, or creating a new one? |
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| 05:41 | < celticminstrel> | I think I'd put it in the same try block. |
| 05:42 | < Alek> | augh. |
| 05:42 | < Alek> | this is annoying. |
| 05:42 | < Alek> | half the web is erratic. sometimes available sometimes not. |
| 05:43 | < Alek> | especially google. |
| 05:43 | < celticminstrel> | Bleh. Bedtime. |
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| 05:50 | < Orthia> | How do I get the integers back out of the ArrayList<Integer> structure? Does this specifically demand a for loop or is there a cheaters way? |
| 05:52 | <@Vornicus> | All of them? |
| 05:52 | <@Vornicus> | use a for loop on it; it's iterable. |
| 05:52 | < Orthia> | OK. |
| 05:52 | <@Vornicus> | foreach, etc |
| 05:54 | < Orthia> | foreach? |
| 05:54 | <@Vornicus> | see the for loop in the decoder. |
| 05:54 | < Namegduf> | for (Integer i : yourList) { ... } |
| 05:55 | < Namegduf> | It's a quite nice construct. |
| 05:55 | < Orthia> | Got it. RIGHT, YER BITCHES |
| 05:57 | < Orthia> | ... whut |
| 05:57 | <@Vornicus> | Have you figured out packing and unpacking? |
| 05:58 | < Orthia> | Haven't even looked at it yes |
| 05:58 | < Orthia> | yet |
| 05:58 | < Orthia> | I figured I would panic about that once I have tested encode and decode. |
| 05:59 | <@Vornicus> | ok. |
| 06:00 | <@Vornicus> | (pack and unpack are relatively simple, but I can't show it to you in python because most of the tricks are type stuff that Python nicely ignores.) |
| 06:01 | < Orthia> | http://pastebin.starforge.co.uk/204 - line 50, error in comment |
| 06:01 | < Orthia> | http://pastebin.starforge.co.uk/203 - the class it is calling. |
| 06:01 | < Orthia> | Pretty sure encode bloody well /does/ accept an InputStream, no? |
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| 06:02 | <@Vornicus> | wtf |
| 06:03 | | * Orthia ;_; |
| 06:03 | <@Vornicus> | I don't know, that should work. |
| 06:04 | < Orthia> | gnah |
| 06:05 | < Orthia> | Vorn: You doing much tomorrow? AKA 12-14 hours? |
| 06:10 | <@Vornicus> | well, I'm half-packing, but not really other than that. |
| 06:10 | < Orthia> | ...packing? |
| 06:10 | <@Vornicus> | got a new apartment |
| 06:10 | < Orthia> | Woo! |
| 06:10 | < Orthia> | Crats, vorny! |
| 06:11 | < Orthia> | hrn. Am tempted to just get the decoder doing the same thing, bugs be damned, tonight. Then try and get pack/unpack and the trie size-limiter sorted. |
| 06:15 | | * Alek also passes Vorn some crates. |
| 06:15 | <@Vornicus> | The size limiter is actually not all that hard; you do need to change all four of encode, decode, pack, and unpack, but that's not that big a deal. |
| 06:20 | <@Vornicus> | (encode and decode need to 1. limit and 2. start over when the clear code comes; pack and unpack need to start over when the clear code comes.) |
| 06:25 | < Orthia> | hrn |
| 06:26 | < Orthia> | so hey |
| 06:26 | < Orthia> | My decoder |
| 06:27 | < Orthia> | Is pretty much identical to my encoder, both in commandline arguements and in file IO? |
| 06:27 | <@Vornicus> | Pretty much. |
| 06:27 | < Orthia> | Should I just have a flag, or c+p the methods, or turn these into functions, or...? |
| 06:29 | <@Vornicus> | I'd do a CL flag. |
| 06:29 | <@Vornicus> | Did you get the thing to stop bitching? |
| 06:31 | <@Vornicus> | (the 204 problem, that is) |
| 06:37 | < Orthia> | nope |
| 06:37 | < Orthia> | wait, haha, got it |
| 06:37 | < Orthia> | The project hadn't updated the type for LZW. |
| 06:52 | <@Vornicus> | aha |
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| 07:00 | < Orthia> | OK, question |
| 07:01 | < Orthia> | I have an inputstream that is theoretically a series of, at the moment, bytes |
| 07:01 | < Orthia> | How do I change/typecast those to an Iterable<Integer>? |
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| 07:03 | <@Vornicus> | you pack or unpack them. |
| 07:04 | <@Vornicus> | er, unpack them, in this case. |
| 07:07 | < Orthia> | OK? I presume this uses a for loop of some variety? |
| 07:08 | <@Vornicus> | What's /in/ the input stream? |
| 07:09 | | * Orthia coffs. Whatever the encoder output to a file. A series of integers? Not entirely sure how they get stored. |
| 07:10 | <@Vornicus> | I don't know how they got stored either! |
| 07:10 | <@Vornicus> | Looks like you need to define how to store these things. |
| 07:11 | < Orthia> | Yeah |
| 07:11 | <@Vornicus> | Time to write pack() |
| 07:18 | <@Vornicus> | In order to write pack() and unpack() the first thing you need is a way to tell, by the index of a thing, how many codes have been generated, and thus how many bits you need to distinguish them. |
| 07:19 | <@Vornicus> | At index 0, there's only 257 possible codes, and each additional index adds one. You will need to increase the number of bits each time you pass a power of two. |
| 07:19 | < Orthia> | hm, a point |
| 07:20 | < Orthia> | Oh, minor point of order - we want the encoder/decoder to work regardless of whether things were packed or not. |
| 07:20 | <@Vornicus> | If you /really/ want to test your encoder/decoder, though, you can round trip stuff. |
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| 07:22 | <@Vornicus> | Find a largish text file - War and Peace - and stuff it through the encoder, then the results of that through the decoder, and then compare that result to your original. |
| 07:22 | < Orthia> | OK |
| 07:22 | < Orthia> | Hence why I am trying to get it to behave. |
| 07:23 | <@Vornicus> | Don't bother storing off the encode results. |
| 07:24 | < Orthia> | I'm trying to get it to encode a file at all; I think I have the 'telling it where to find the file' bit written wrong. |
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| 07:24 | <@Vornicus> | what's it doing? |
| 07:25 | < Orthia> | Giving me 'file not found' errors |
| 07:25 | < Orthia> | Even when I specify, eg, "C:\test.txt" and have a file placed there. |
| 07:25 | < Orthia> | It may be getting confused about relative vs absolutes, but damned if I know how to tell it to recognise one over the other. |
| 07:26 | <@Vornicus> | wtf |
| 07:26 | < Orthia> | Yeah |
| 07:27 | <@Vornicus> | wait |
| 07:27 | <@Vornicus> | you're specifying it with a single backslash? |
| 07:28 | < Orthia> | heh~ |
| 07:28 | <@Vornicus> | \\ |
| 07:28 | < Orthia> | Still nothing. |
| 07:28 | <@Vornicus> | what |
| 07:28 | < Orthia> | http://pastebin.starforge.co.uk/205 |
| 07:28 | <@Vornicus> | arg, where's McM, I can't do the vagaries here. |
| 07:29 | < Orthia> | Arguments in question: C:\\Test.txt -c |
| 07:29 | <@Vornicus> | Oh, that's coming in from the outside world. |
| 07:29 | <@Vornicus> | ...okay, what's going on there. |
| 07:29 | < Orthia> | Yeah, need to work out how to get it to parse right. |
| 07:30 | < Orthia> | And unfortunately I need to dissapear to sort out dinner, as I promised to do so "In an hour" an hour ago. Will have to BBL. >.< |
| 07:30 | | * Orthia is very sorry, and also extremely appreciative of the help, Vorny |
| 07:30 | | * Orthia must, however, depart. |
| 07:31 | <@Vornicus> | This is stuff I can't help with, unfortunately. You're going to need o poke McM and others, because I don't know how to deal with this. |
| 07:31 | < Orthia> | No problem, thank you Vorn |
| 07:31 | < Orthia> | I shall resume this stuff in the morning. Mucho appreciated. |
| 07:31 | < Orthia> | Also, if I can get the code cleaned up (comments, etc), and bugfixed tomorrow, it's 75% of the grade right there. |
| 07:31 | < Orthia> | All else failing, I am happy with that. |
| 07:31 | < Orthia> | So thank you! |
| 07:32 | | * Orthia goes. Nini, Vorn (in all likelyhood anyway~) |
| 07:32 | <@Vornicus> | I'm headed to bed, yes |
| 07:32 | <@Vornicus> | nini |
| 07:32 | <@Vornicus> | If we can get this stupid shit working then the rest should not be hard. |
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| 14:09 | <@Vornicus> | Orthia: stupid thought, I think possibly your first thing in the command line is the name of the command! |
| 14:21 | <@Vornicus> | So you'll want to skip the first item in the args. |
| 14:21 | <@Vornicus> | 0th, rather |
| 14:22 | < celticminstrel> | Yes. |
| 14:22 | < celticminstrel> | Command line arguments start at index 1. |
| 14:25 | <@Vornicus> | So, correction from 205: line 32, "int i = 1" |
| 14:25 | <@Vornicus> | I completely forgot that bit till this morning. |
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| 17:00 | | * AnnoDomini requires some sort of improved screenshot software for Linux. |
| 17:01 | <@AnnoDomini> | Something that'd let me make screenshots of the currently active window. |
| 17:01 | < Tarinaky> | AnnoDomini: Give me a second. |
| 17:02 | < Tarinaky> | AnnoDomini: 'import'. |
| 17:02 | < Tarinaky> | "import - saves any visible window on an X server and outputs it as an image file. You can capture a single window, the entire screen, or any rectangular portion of the screen." |
| 17:05 | <@AnnoDomini> | How exactly do I use it? |
| 17:08 | <@AnnoDomini> | Seems to me that if I launch it from terminal, it'll capture the terminal. |
| 17:08 | <@AnnoDomini> | Or something. |
| 17:08 | | You're now known as TheWatcher |
| 17:10 | < jerith> | When you launch it, it gives you a capture cursor or something. |
| 17:10 | < jerith> | Check the manpage. |
| 17:12 | < Tarinaky> | You get a cursor to select the window you want to screenshot. |
| 17:12 | <@AnnoDomini> | I've found that the manpages are fairly useless at teaching basic usage. They're more like a reference for someone who already knows how to use something, but needs exact details. |
| 17:13 | < Tarinaky> | AnnoDomini: Try using it? |
| 17:13 | <@AnnoDomini> | I did. |
| 17:13 | < Tarinaky> | And? |
| 17:13 | <@AnnoDomini> | It appears to be very slow. |
| 17:13 | < Tarinaky> | Did you select a target after running it? |
| 17:13 | <@AnnoDomini> | Yes. |
| 17:13 | < Tarinaky> | (Look at your cursor, is it a cursor or a crosshair?) |
| 17:14 | <@AnnoDomini> | Yes, it was a crosshair, I'm not stupid. |
| 17:14 | < Tarinaky> | It should run instantly. |
| 17:14 | <@AnnoDomini> | I ran it. The cursor turned into a crosshair. I selected stuff. It went to churn for several seconds. |
| 17:19 | <@AnnoDomini> | This isn't exactly what I'm looking for. I need to be able to just press a button and obtain an automatically generated image file at a preset location. Otherwise, my task will be rather tedious. |
| 17:19 | < Bobsentme> | I take it "alt" vs "ctrl" and print screen does not do what you want? |
| 17:20 | < Bobsentme> | I'm not sure which capture software CAINE (Forensic version of Ubuntu) uses, but it was awfully easy, and captured things quite nicely. |
| 17:21 | <@AnnoDomini> | What is alt/ctrl plus printscreen supposed to be doing? |
| 17:21 | < Tarinaky> | AnnoDomini: There're switches available for Import. |
| 17:21 | < Tarinaky> | Personally I use the following shell script: |
| 17:21 | < Tarinaky> | import /tmp/screenshot.png; |
| 17:21 | < Tarinaky> | gimp /tmp/screenshot.png |
| 17:21 | <@AnnoDomini> | But that's not what I want. |
| 17:23 | < Tarinaky> | Then you need to experiment with import's switches. |
| 17:23 | < Bobsentme> | AnnoDomini: Alt+PrintScreen grabs a screen capture of entire screen. Ctrl+Alt+PrintScreen grabs only the current window. |
| 17:24 | < Bobsentme> | (course, that's windows and CAINE, other flavors of linux results may vary) |
| 17:24 | <@AnnoDomini> | Bobsentme: To the clipboard? |
| 17:24 | < Bobsentme> | Usually. |
| 17:24 | <@AnnoDomini> | That's not acceptable, I'm afraid. I really need this to be as toil-free as possible. |
| 17:47 | <@AnnoDomini> | Ah. I was using the wrong Alt. It's LAlt+Printscreen to save a window image to disk. It retains the destination folder and manages filenames automagically. |
| 17:47 | <@AnnoDomini> | This is good. |
| 17:49 | <@AnnoDomini> | God damn it. It won't work with Virtual Box. |
| 17:54 | <@AnnoDomini> | Okay, it works, but I have to first press the host key. |
| 18:03 | <@Vornicus> | in Windows, printscreen is whole screen, alt-printscreen is window only, both to clipboard. |
| 18:08 | < Zed> | Oh, you want something that can grab to a folder? |
| 18:08 | < Zed> | What's your video card? |
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| 18:09 | | * Zed found that EVGA's Precision tool allows for fullscreen captures to a folder with a hotkey, and was very pleased |
| 18:10 | < Zed> | Also... what's that framerate... FRAPS. FRAPS does stuff like that. Unfortunately, I've found it seems to be more application-oriented, and as such gets tetchy about just wanting to grab the desktop/applications/whatever outside of a render environment. |
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| 18:38 | | * gnolam points Zed to the fact that Anno is using Linux. |
| 18:39 | | * Zed points to his lack of proper relevance and embarassment |
| 18:39 | < Zed> | thanks, tho |
| 18:39 | < Zed> | I wasn't paying attention. No wonder everyone was like "just script it!" |
| 18:39 | <@AnnoDomini> | Alt+Printscreen fits my criteria. |
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| 18:57 | < gnolam> | IIRC though, grabbing the current desktop is a single WinAPI call. So making your own hotkeyed, autosaving printscreen program should be trivial. |
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| 20:37 | < gnolam> | http://aturingmachine.com/ |
| 20:37 | < gnolam> | Awesome. |
| 20:41 | <@McMartin> | Nice! |
| 20:42 | <@Vornicus> | seeet. |
| 20:43 | <@Vornicus> | with a w in there somewhere. |
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| 23:38 | | * Derakon eyes his computer, wonders how he could possibly get a "permission denied" when trying to delete a file that he owns and that is world-writable (r-xr-xrwx). |
| 23:38 | < Namegduf> | Because it isn't quite world writable. |
| 23:38 | < Namegduf> | For some reason, you have user and group set to not writable |
| 23:38 | < Namegduf> | But other set to writable |
| 23:39 | <@Derakon> | I didn't set the permissions on this file originally, I note. |
| 23:39 | <@Derakon> | (Anyway, nothing a chmod -R can't fix...still, weird) |
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| 23:49 | | * Derakon realizes he hasn't seen Friday's QC yet, goes to look. "...yep, that's Joch all right." |
| 23:49 | <@Derakon> | Mischan. |
| 23:50 | < celticminstrel> | Questionable Content? |
| 23:51 | <@Derakon> | Aye. |
| 23:51 | <@Derakon> | And it's Jeph, not Joch, as I have been reminded elsewhere. |
| 23:52 | < celticminstrel> | I actually have no idea who/what this Jeph/Joch is... |
| 23:52 | <@Derakon> | Creator of QC. |
| 23:52 | < celticminstrel> | Oh, alright then. |
| --- Log closed Sun Mar 28 00:00:48 2010 |