On pon sty 1 2007, Mikolaj Machowski wrote:
> This won't work: you need a different variable name, see ":help E706".
Yeah, I forgot (not only about that).
This is complete solution::
function! UpdateTags()
call writefile(getline(1, '$'), '.tmp.cc', 'b')
let tags = system('ctags --c++-kinds=+p --fields=+iaS --extra=+q -f
- .tmp.cc')
" Note: whitespaces around expand are tab chars.
let alltags = system('grep -v " '.expand('%').' " tags')
let tagstable = split(alltags, '\n')
call add(tagstable, tags)
call writefile(tagstable, 'tags', 'b')
redraw!
return ';'
endfunction
inoremap <expr> ; UpdateTags()
Note: this is untested in real life, it doesn't return any errors.
In good conditions execution of whole function takes 0.46s on big tags
file (KMail source, tags size over 4MB, 10000 lines). Delay noticeable
on my computer Sempron 2200, 512M RAM, old HD 5400rpm. In worse conditions
it was taking up to 0.75s::
FUNCTION UpdateTags()
Called 1 time
Total time: 0.527128
Self time: 0.401542
count total (s) self (s)
1 0.000551 call writefile(getline(1, '$'),
'.tmp.cc', 'b')
1 0.026373 0.000298 let tags = system('ctags --c++-kinds=+p
--fields=+iaS --extra=+q -f - .tmp.cc')
1 0.000091 let stags = split(tags, '\n')
1 0.130731 0.031220 let alltags = system('grep -v "
'.expand('%').' "
tags')
1 0.128909 let tagstable = split(alltags, '\n')
1 0.000043 call extend(tagstable, stags)
1 0.240341 call writefile(tagstable, 'tags', 'b')
1 0.000033 return ';'
FUNCTIONS SORTED ON TOTAL TIME
count total (s) self (s) function
1 0.527128 0.401542 UpdateTags()
FUNCTIONS SORTED ON SELF TIME
count total (s) self (s) function
1 0.527128 0.401542 UpdateTags()
Note however I've made one fatal mistake. ``ctags fname`` will point to
tags in file .tmp.cc not our real current file! Filtering tags in Vim is
possible and on small sample quite fast but still 0.5s is long. Maybe we
should put that strain to the system::
function! UpdateTags()
call writefile(getline(1, '$'), '.tmp.cc', 'b')
call system('grep -v " '.expand('%').' " tags > tags2 && mv -f
tags2
tags')
let tags = system('ctags --c++-kinds=+p --fields=+iaS --extra=+q -f
- .tmp.cc | sed "s/\t\.tmp\.cc\t/\t'.expand('%').'\t/" >> tags')
return ';'
endfunction
inoremap <expr> ; UpdateTags()
And here we have the winner::
FUNCTION UpdateTags()
Called 1 time
Total time: 0.145700
Self time: 0.001068
count total (s) self (s)
1 0.000523 call writefile(getline(1, '$'),
'.tmp.cc', 'b')
1 0.096118 0.000195 call system('grep -v " '.expand('%').'
" tags >
tags2 && mv -f tags2 tags')
1 0.049003 0.000294 call system('ctags --c++-kinds=+p
--fields=+iaS
--extra=+q -f - .tmp.cc | sed "s/\t\.tmp\.cc\t/\t'.expand('%').'\t/" >>
tags')
1 0.000029 return ';'
FUNCTIONS SORTED ON TOTAL TIME
count total (s) self (s) function
1 0.145700 0.001068 UpdateTags()
FUNCTIONS SORTED ON SELF TIME
count total (s) self (s) function
1 0.145700 0.001068 UpdateTags()
Below 0.15s (and even in worse conditions only up to 0.25s)! This is
less then one keystroke of good touchtyper. This is for the price of
portability but you can find grep/sed/mv for other systems so situation
isn't hopeless.
HTH
m.
