created October 2, 2001 · complexity basic · author Long Truong · version 6.0
I always wanted a script that would auto-comment the end of a conditional block. So, I wrote one. This function searches for the previous matching "{", grabs the line, and inserts it as a comment after the "}". If there is no previous matching "{", it inserts nothing. So...
if (test){
will generate:
} // if (test)
This is obviously not work if you use a different style. If you use
if (test)
{
then substituting 'getline(".")', use 'getline(line(".") - 1)' should work.
Put the following in your vimrc:
au BufNewFile,BufRead *.c,*.cc,*.C,*.h imap } <Esc>:call CurlyBracket()<CR>a
function CurlyBracket()
let l:my_linenum = line(".")
iunmap }
sil exe "normal i}"
imap } <Esc>:call CurlyBracket()<CR>
let l:result1 = searchpair('{', '', '}', 'bW')
if (result1 > 0)
let l:my_string = substitute(getline("."), '^\s*\(.*\){', '\1', "")
sil exe ":" . l:my_linenum
sil exe "normal a //" . l:my_string
endif
endfunction
Comments[]
Thanks for the cool script. I had some problems getting it working, but I've bodged it for now. Don't know if you're interested, but I've made a few modifications.
[1] Works for
if (x ==1 )
{
.....
}
(the substitution appeared to be going awry for lines with braces on their own)
[2] Won't comment lines that are within 10 lines of each other. I find this script great for big huge functions, but for short if statements it can quickly clog up the code with obvious comments.
[3] Won't copy the entire line, but truncates at 30 characters. Prepended spaces are removed.
[4] I've added the line
au BufNewFile,BufRead *.java,*.c,*.cc,*.C,*.h map <A-F1> :call CurlyBracket()<CR>
to my .vimrc for those times when you started with a small if statement, and ended up with a mammoth one. Simply calls CurleyBracket to comment it.
function! CurlyBracket()
let l:my_linenum=line(".")
iunmap }
sil exe "normal i}"
imap } <Esc>:sil call CurlyBracket()<CR>a
let result1=searchpair('{', '', '}', 'bW')
let goline=""
let appendstr=""
if (result1 > 0)
let l:my_startline=line(".")
if (l:my_linenum - l:my_startline > 10)
let l:my_string=substitute(getline(line(".")-1),"^ *","","g")
let l:shortstring=strpart(l:my_string,0,30)."..."
let appendstr="normal a // ".shortstring
endif
let goline=":".l:my_linenum
endif
sil exe goline
sil exe appendstr
endfunction
Okay. I have changed this script. It takes into account the last note and some other things I noticed.
- This was annoying when I had a short if(){}else{} statement, so I changed the mapping to }<CR>.
- If there is an else statement, the comment inserted is the if statement. followed by an else {
- >10 lines check put in.
- < 30 char check put in
Notes:
- This will not indent correctly unless you're using cindent. For some reason, a friend of mine with smartindent and it didn't work
- If your style is to put the curly bracket on it's own line after the "if", add "-1" to all the getline calls.
au BufNewFile,BufRead *.c,*.cc,*.C,*.h imap }<CR> <Esc>:call CurlyBracket()<CR>a
function CurlyBracket()
let l:startline = line(".")
let l:result1 = searchpair('{', '', '}', 'bW', '')
if (result1 > 0)
let l:linenum = line(".")
let l:string1 = getline(l:linenum)
if (l:string1 =~ ".*}.*{.*")
sil exe "normal 0"
let l:result2 = searchpair('{', '', '}', 'bW', '')
if (l:result2 > 0)
let l:string1 = getline(".") . l:string1
endif
endif
let l:my_string = substitute(l:string1, '^\s*\(.*\){', '\1', "")
let l:my_string = strpart(l:my_string,0,30)."..."
sil exe ":" . l:startline
sil exe "normal i}"
if ((l:startline - l:linenum) > 10)
sil exe "normal a //" . l:my_string
endif
endif
endfunction
Just 3 modifications:
[1]. Now, supports both styles of
if (..) {
..
}
and
if (...)
{
...
} else
{
...
}
but,
if ()
{
}
else
{
}
still does not work!!
[2] The number of lines is taken form the start of the "if" (in case of if-else)
[3] The "..." is added only if the length of the stringis > 30.
=[]
" curlyC.vim
" From Long Truong : Vim Tip #125.
" Automatically comments {} in C/C++/Java.
au BufNewFile,BufRead *.c,*.cc,*.h imap }<CR> <Esc>:call CurlyBracket()<CR>a
au BufNewFile,BufRead *.cpp,*.C imap }<CR> <Esc>:call CurlyBracket()<CR>a
au BufNewFile,BufRead *.java,*.idl imap }<CR> <Esc>:call CurlyBracket()<CR>a
function CurlyBracket()
let l:startline = line(".")
let l:result1 = searchpair('{', '', '}', 'bW')
if (result1 > 0)
let l:linenum = line(".")
let l:string1 = substitute(getline(l:linenum), '^\s*\(.*\)\s*$', '\1', "")
if (l:string1 =~ '^{')
let l:string1 = substitute(getline(l:linenum - 1), '^\s*\(.*\)\s*$', '\1', "") . " " . l:string1
sil exe "normal k"
endif
" get else part if necessary
if (l:string1 =~ "^}")
sil exe "normal 0"
let l:result2 = searchpair('{', '', '}', 'bW')
if (l:result2 > 0)
let l:linenum = line(".")
let l:string2 = substitute(getline(l:linenum), '^\s*\(.*\)\s*$', '\1', "")
if (l:string2 =~ '^{')
let l:string2 = substitute(getline(l:linenum - 1), '^\s*\(.*\)\s*$', '\1', "") . " " . l:string2
endif
let l:string1 = l:string2 . " ... " . l:string1
endif
endif
" remove trailing whitespaces and curly brace
let l:my_string = substitute(l:string1, '\s*{[^{]*$', '', "")
let l:my_strlen = strlen(l:my_string)
if (l:my_strlen > 30)
let l:my_string = strpart(l:my_string,0,30)."..."
endif
sil exe ":" . l:startline
sil exe "normal i}"
if ((l:startline - l:linenum) > 10)
sil exe "normal a /* " . l:my_string . " */"
endif
endif
endfunction
I use: vim6.1.74 - Linux Nice tip but it doesn't work for me!
Error detected while processing function CurlyBracket: line 2: Error detected while processing function CurlyBracket..CurlyBracket: line 2: Error detected while processing function CurlyBracket..CurlyBracket..CurlyBracket: ...
People facing Problems with running this script can try removing the <Space> after "iunmap }" statement.
If you are deciding which script to use, I used curlyC.vim.
Remember that completion is done only if { and } are separated by 10 lines
The 10 lines buffer was deliberate - you don't want the closing comments for small blocks