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" Mappings for changing the case type of a text object. These mappings are invoked with <C-c>.
"
" This way, to change the case format of a word to snake_case, one can run:
"
" <C-c>siw
"
" the format of this command is
"
" <C-c>[j]<target_casefmt><text_object>
"
" if the j is included the text object is joined using the case format.
"
" valid case formats are
"
" s - snake_case
" S - Upper_Snake_Case
" c - camelCase
" C - UpperCamelCase
" k - KONSTANT_CASE
" K - KONSTANT CASE (toupper(title case))
" t - title case
" T - Title Case
" - - dashed-case
if ! exists('g:casefmt_include_bindings')
let g:casefmt_include_bindings = 1
endif
if ! exists('g:casefmt_leader')
let g:casefmt_leader = '<C-c>'
endif
let s:case_fmts = {
\ 's': 'to_snake',
\ '_': 'to_snake',
\ 'S': 'to_Snake',
\ 'c': 'to_camel',
\ 'C': 'to_Camel',
\ 'k': 'to_CONSTANT',
\ 'K': 'to_CONSTANT_space',
\ 't': 'to_title',
\ 'T': 'to_Title',
\ '-': 'to_dashed'
\ }
function! CaseFmt_AddFormat(key, funcname) abort
exec printf("noremap <silent> <Plug>(casefmt-leader-no-set)%s "
\ . ":\<C-u>let g:CaseFmtFunction=function(\"\<SID>%s\")<cr>"
\ . ":\<C-u>set operatorfunc=\<SID>casefmt_do<cr>g@", a:key, a:funcname)
exec printf("vnoremap <silent> <Plug>(casefmt-leader-no-set)%s "
\ . ":\<C-u>let g:CaseFmtFunction=function(\"\<SID>%s\")<cr>"
\ . ":\<C-u>call \<SID>casefmt_do(visualmode(), 1)<cr>", a:key, a:funcname)
endfunction
nmap <silent> <Plug>(casefmt-leader) :<C-u>let g:CaseFmtProcessor=function("<SID>casefmt_default_processor")<cr><Plug>(casefmt-leader-no-set)
vmap <silent> <Plug>(casefmt-leader) :<C-u>let g:CaseFmtProcessor=function("<SID>casefmt_default_processor")<cr>gv<Plug>(casefmt-leader-no-set)
for [k, v] in items(s:case_fmts)
call CaseFmt_AddFormat(k, v)
endfor
if g:casefmt_include_bindings
exec printf("nmap <silent> %s <Plug>(casefmt-leader)", g:casefmt_leader)
exec printf("vmap <silent> %s <Plug>(casefmt-leader)", g:casefmt_leader)
endif
nmap <silent> <Plug>(casefmt-leader)j :<C-u>let g:CaseFmtProcessor=function("<SID>casefmt_joiner")<cr><Plug>(casefmt-leader-no-set)
vmap <silent> <Plug>(casefmt-leader)j :<C-u>let g:CaseFmtProcessor=function("<SID>casefmt_joiner")<cr>gv<Plug>(casefmt-leader-no-set)
function! s:casefmt_do(type, ...) abort
if a:0
silent exe "norm! gvy"
elseif a:type == 'line'
" yank the text described by the motion
silent exe "norm! '[V']y"
else
silent exe "norm! `[v`]y"
endif
let yanked = getreg('"', 1, v:true)
let yankedtype = getregtype('"')
if !exists('g:CaseFmtProcessor')
let g:CaseFmtProcessor = function("\<SID>casefmt_default_processor")
endif
let changed = g:CaseFmtProcessor(yanked, yankedtype)
call setreg('"', changed, yankedtype)
norm gvp
" Reset the yanked text to what it was originally.
call setreg('"', yanked, yankedtype)
endfunction
" Default processor. Calls change case fmt on each word.
function! s:casefmt_default_processor(yanked, type)
let changed = []
for n in a:yanked
let split = split(n, '\<\|\>') " Split by word boundaries
let new_split = []
for s in split " Iterate by words.
if s =~ "[a-zA-Z_0-9]*" " Is s an identifier?
call add(new_split, g:CaseFmtFunction(s:normalize(s)))
else
call add(new_split, s)
endif
endfor
call add(changed, join(new_split, ''))
endfor
return changed
endfunction
function! s:casefmt_joiner(yanked, type) abort
let changed = []
for n in a:yanked
call add(changed, g:CaseFmtFunction(tolower(substitute(n, '\s\+', '_', 'g'))))
endfor
return changed
endfunction
" snake_case is the platonic form that all other forms build from. This function
" tries to be SmartAboutDetecting_the current case format and converting it
" properly.
function! s:normalize(s) abort
if a:s =~ '[a-z][A-Z]'
" a:s has a camel case boundary in it.
return tolower(substitute(a:s, '\%([a-zA-Z]\)\zs\ze\([A-Z0-9]\)', '_', "g"))
endif
return tolower(a:s)
endfunction
function! s:to_snake(s) abort
return a:s
endfunction
function! s:to_Snake(s) abort
return substitute(a:s, '\%(_\|\<\)\zs\w\ze', '\u\0', 'g')
endfunction
function! s:to_camel(s) abort
return substitute(a:s, '_\([a-z]\)', '\u\1', "g")
endfunction
function! s:to_Camel(s) abort
return substitute(s:to_camel(a:s), '\<\w', '\u\0', 'g')
endfunction
function! s:to_CONSTANT(s) abort
return toupper(a:s)
endfunction
function! s:to_CONSTANT_space(s) abort
return toupper(s:to_title(a:s))
endfunction
function! s:to_title(s) abort
return substitute(a:s, '_', ' ', 'g')
endfunction
function! s:to_Title(s) abort
return substitute(s:to_title(a:s), '\<[a-z]', '\u\0', 'g')
endfunction
function! s:to_dashed(s) abort
return substitute(a:s, '_', '-', 'g')
endfunction
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