Hex editors

[chrisname]

std::stringstream+std::hex, or sprintf().

Good point.

Load whatever is shown

Oh, THAT's what you mean! Load enough bytes to fill a window; (80*24 for now; until I GUI) then when you scroll down; unload the first row and load the second row?

[helios]

That would be too slow if you're going to open and close the file for each read. Actually, forget what I said earlier. Loading 4K every time the cursor moves outside of the loaded section would be enough.

x - cursor (or visible space)
[_] - loaded data
[0] - not loaded data
[x___][0000]
[_x__][0000]
[__x_][0000]
[___x][0000]
[0000][x___]

[chrisname]

helios wrote:

Loading 4K every time the cursor moves outside of the loaded section would be enough.

I think I understand. I should load the 4KiB of the file the cursor is "on". So you're actually looking for a command line program? That simplifies things.

Funnily enough the max filename size is also 4KiB (4096 characters to be specific) according to stdio.h's FILENAME_MAX. I'm using my own version; same size, though.

Oh and for now I'm only going to have one file open at a time; but in the future I might implement a doubly-linked list so you can have more; probably 16 maximum (because that would still require <= 64KiB just to store the list of filenames, let alone the <= 4KiB for each file buffer, the size of the pointer to the file structure (FILE*), etc...).

Edit: like these:
Cursor at (0,0):
http://i49.tinypic.com/2wcl4lz.jpg
Cursor at (0, 3):
http://i46.tinypic.com/fax47k.jpg
?

[chrisname]

Urgh! I can't get GTK installed. What should I use for the GUI??? Stupid GTK; I did everything I was meant to; set
export GTK_CFLAGS="`pkg-config gtk+-2.0 --cflags`"; export GTK_LIBS="`pkg-config gtk+-2.0 --libs`"... What more does it want?
Ugh... I'll try some other library; I wanted to use GTK because it looks awesome (IMO) but whatever...

[helios]

Qt. Build it complete from source for extra fun (C:\Qt\: 10.1 GiB).

[chrisname]

I tried Qt before. There is no way I'm installing Qt. It took over three hours from ./configure until make install was finished.

I'll try WxWidgets... it's cross platform.

Edit: GTK+ is working now:

build.sh

GTK_CFLAGS=" `pkg-config gtk+-2.0 --cflags` "
GTK_LIBS=" `pkg-config gtk+-2.0 --libs` "
OPTIMIZE=" -O3 -Os -fexpensive-optimizations "
ERRORS_WARNINGS=" -Wall -Wextra "

gcc $GTK_CFLAGS $GTK_LIBS $OPTIMIZE $ERRORS_WARNINGS *.c

Don't ask why I split it into so many variables .That's just how I like to do it.

Haven't got a name yet; can you think of one? I was going to go for "0xVi" temporarily; albeit fairly bad.

I've never been good at coming up with names... :l

This is just irresistible:
http://library.gnome.org/devel/gtk/unstable/ch02.html

Oh and I've almost finished the GUI. I have to finish some stuff for the text box and then I can start on the real code :)