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# SplitOpen
# vim-split-open
This vim plugin opens file-pairs in a new split-window tab
## Usage
Use
:SplitOpen filename
with a .cpp or .h file as filename to open a new tab containing a vertical split
with the corresponding header file in the left window and the corresponding
source file in the right window.
Use
:Split
to open the corresponding header or source file to your currently open file in
a vertical split.
## Configuration
You can configure the following settings:
### g:splitopen_extensions
Use this dictionary to define your pairs of left-hand- right-hand-side file
types. E.g.
let g:splitopen_extensions = {"h": "cpp"}
always places a .cpp file on the right-hand side when opening an .h file and
vice versa.
### g:splitopen_set_fzf_keys
Set this option to 1
let g:splitopen_set_fzf_keys = 1
to have SplitOpen overwrite the default fzf keybindings ctrl-t/x/v for opening
files in splits or tabs to add an addional binding ctrl-s to call SplitOpen.
## License
SplitOpen is GPL-3.0 licensed. See LICENSE file for more info.
## Changelog
v1.1.0
* Added Split() command
v1.0.0
* Fixed error when reloading plugin
v0.0.4
* Add filetype configuraton
v0.0.3
* Add fzf.vim keybinding
v0.0.2
* Added delay-loading
* Added documentation
v0.0.1
* Initial release
This is my first vim plugin. It provides a command to open a combination of c++ source and header file in a new tab split side-by-side.

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function s:invert_dict(source_dict)
let result = {}
for [key, value] in items(a:source_dict)
let result[value] = key
endfor
return result
endfunction
let s:extensions = g:splitopen_extensions
let s:extensions_rev = s:invert_dict(s:extensions)
function s:isLeftSideExtension(extension)
return has_key(s:extensions, a:extension)
endfunction
function s:isRightSideExtension(extension)
return has_key(s:extensions_rev, a:extension)
endfunction
function s:getFileExtension(filename)
return fnamemodify(a:filename, ":e")
endfunction
function s:getFileRoot(filename)
return fnamemodify(a:filename, ":r")
endfunction
function s:getSwitchExtension(filename)
let extension = s:getFileExtension(a:filename)
if s:isLeftSideExtension(extension)
return s:extensions[extension]
elseif s:isRightSideExtension(extension)
return s:extensions_rev[extension]
endif
endfunction
function s:getSwitchFile(filename)
return s:getFileRoot(a:filename) . "." . s:getSwitchExtension(a:filename)
endfunction
function s:addLeftSplit(filename)
execute("vsplit " . s:getSwitchFile(a:filename))
execute("wincmd l")
endfunction
function s:addRightSplit(filename)
execute("vsplit " . s:getSwitchFile(a:filename))
execute("wincmd L")
execute("wincmd h")
endfunction
function s:splitOpenFile(filename)
let extension = s:getFileExtension(a:filename)
if s:isLeftSideExtension(extension)
call s:addRightSplit(a:filename)
elseif s:isRightSideExtension(extension)
call s:addLeftSplit(a:filename)
endif
endfunction
function! splitopen#SplitOpenFile(filename)
execute("tabedit " . a:filename)
call s:splitOpenFile(a:filename)
endfunction
function! splitopen#SplitFile()
call s:splitOpenFile(expand("%:p"))
endfunction

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*splitopen.txt* opens file-pairs in a new split-window tab
================================================================================
CONTENTS *SplitOpenContents*
1. Usage ..............................|SplitOpenUsage|
2. Configuration ......................|SlitOpenConfiguraton|
2.1 g:splitopen_extensions.........|SplitOpenConfiguration_extensions|
2.2 g:splitopen_set_fzf_keys.......|SplitOpenConfiguration_set_fzf_keys|
3. License ............................|SplitOpenLicense|
4. Changelog ..........................|SplitOpenChangelog|
================================================================================
1. Usage *SplitOpenUsage*
Use
:SplitOpen filename
with a .cpp or .h file as filename to open a new tab containing a vertical split
with the corresponding header file in the left window and the corresponding
source file in the right window.
Use
:Split
to open the corresponding header or source file to your currently open file in
a vertical split.
================================================================================
2. Configuration *SplitOpenConfiguration*
You can configure the following settings:
--------------------------------------------------------------------------------
2.1 g:splitopen_extensions *SplitOpenConfiguration_extensions*
Use this dictionary to define your pairs of left-hand- right-hand-side file
types. E.g.
let g:splitopen_extensions = {"h": "cpp"}
always places a .cpp file on the right-hand side when opening an .h file and
vice versa.
--------------------------------------------------------------------------------
2.2 g:splitopen_set_fzf_keys *SplitOpenConfiguration_set_fzf_keys*
Set this option to 1
let g:splitopen_set_fzf_keys = 1
to have SplitOpen overwrite the default fzf keybindings ctrl-t/x/v for opening
files in splits or tabs to add an addional binding ctrl-s to call SplitOpen.
================================================================================
3. License *SplitOpenLicense*
SplitOpen is GPL-3.0 licensed. See LICENSE file for more info.
================================================================================
4. Changelog *SplitOpenChangelog*
v1.1.0
* Added Split() command
v1.0.0
* Fixed error when reloading plugin
v0.0.4
* Add filetype configuraton
v0.0.3
* Add fzf.vim keybinding
v0.0.2
* Added delay-loading
* Added documentation
v0.0.1
* Initial release

13
plugin/split-open.vim Normal file
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function! SplitOpenFile(filename)
execute("tabedit " . a:filename)
let l:file_extension = tolower(fnamemodify(a:filename, ":e"))
if l:file_extension == "cpp"
execute("FSSplitLeft")
execute("wincmd l")
elseif l:file_extension == "h"
execute("FSSplitRight")
execute("wincmd h")
endif
endfunction
command! -nargs=1 SplitOpen :call SplitOpenFile("<args>")

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command! -nargs=1 SplitOpen :call splitopen#SplitOpenFile("<args>")
command! Split :call splitopen#SplitFile()
" map left-split / right-split file extensions
if !exists("g:splitopen_extensions")
let g:splitopen_extensions = {
\ "h": "cpp",
\ "H": "CPP",
\ }
endif
if !exists('g:splitopen_set_fzf_keys')
let g:splitopen_set_fzf_keys = 0
endif
if g:splitopen_set_fzf_keys
let g:fzf_action = {
\ 'ctrl-s': 'SplitOpen',
\ 'ctrl-t': 'tab split',
\ 'ctrl-x': 'split',
\ 'ctrl-v': 'vsplit',
\ }
endif