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I really needed to be able to edit a file on the device, and this was
the nearest thing handy, and it turns out to be more or less usable for
basic editing, so...
Support cursor keys.
Support :q (since there's currently no record of whether the file's
modified or not, :q is the same as :q!).
Add 'A' to insert at end of line.
Add 'n' to find next after '/'.
Fix backspace all the way to get out of ex command mode.
Fix escape sequences to not hard-code assumptions about the terminal's
default background and foreground colors.
Fix 'spesial' typo for 'special', and remove explicit array sizes.
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Reimplemented to command mode execution to follow vi cmd pattern.
(REG)[COUNT0]{CMD}[COUNT1]<MOV>(SYM)
Most of the moves can be executed intependently or before command,
some require character after. (possibly with utf8)
Some of the commands do not require move, such as D, J, dd, yy, x...
There is also tons of special cases where move behaves differently
depending on command. For example 1cw and 1ce appear to be the same
but 1dw and 1de are not...
Most of the operations still need reimplementing and lots of cleanup
in order them to behave correctly
refactored word move to work with utf-8
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Reimplemented basic cursor movements and char delete.
In order to work more correctly with utf-8 data.
x,h,j,k,l seems to work now with test data such as
tests/files/utf8/test2.txt
hjkl now accept count parameter so 1000j will scroll file 1000 lines
relative move to bottom
word movements w,e,b... still need to be still reimplemented in order to
step correctly on utf-8 data
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Style cleanups:
Removing whitespaces at end of lines, hopefully reduces git am
warnings
Bug fixes:
fix segfault if file did not exist, now creates one empty line
fix insert mode text not showing on start of line
fix append on empty line
fix cursor move right on empty line
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Now calculates utf-8 rune width properly before trying to print on screen.
works with test1.txt and test2.txt on tests/files/utf8 folder with
0x0300-0x036F combining chars
Uses mbtowc and wcwidth to calculate width of rune. These both should be
implemented on c runtime that conforms POSIX-1.2001. Different c
runtimes might have different level of support to combining char
ranges etc...
I think there is no standard way to calculate utf-8 rune width without
converting it first to widechar. And i think conversion to widechar just
to calculate width is silly, since all write calls can be done with utf8
directly (on utf8 locales ofc), but in order to calculate them yourself
without pointless conversion, one would need to write variable byte lookup
array for binary searching weird ranges and make sure it works with big-endian
systems too...
By the way running ./watch ./cat tests/files/utf8/japan.txt does not print the
text for some reason, but other test data does... I was checking how
well original crunch_str works and noticed it.
-Jarno
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Variable initialization to start of blocks
Space after if,for,while: if() -> if ()
Space after comma on function calls:
write(fd,buf,count); -> write(fd, buf, count);
Spaces surrounding variable initialization
Pointer * binding to variable instead of type: int* i -> int *i
Spaces surrounding compare operators
No spaces surrounding arimetic operators
Some aligntment whitespace fixes
Still messy and needs more cleanup, but there is bigger issues to solve
first.
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Removed for(int i = 0;....) style loop initializers to be consistant
with project style.
Removed few unused global variables
Added 2 empty white space lines back to CONFIG comment section.
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Has beginnings of reading file, saving file, hjkl movement, insert, ex
(only w, wq, q!), search with /, some other normal mode actions (dd, w, b,
e), some utf8 support
Everything is still very unfinished and partly behaves wrongly comparing
to original vi. But simple tasks like modifying short config files
should be possible.
Some things like draw_page needs serious refactor since it now writes
whole screen after every keypress. Didint bother to refactor yet if
linked list needs to be replaced with something else...
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