vim-signify/plugin/signify.vim
2013-03-07 07:50:14 +01:00

347 lines
12 KiB
VimL

if exists('g:loaded_signify') || &cp
finish
endif
let g:loaded_signify = 1
" Default values {{{1
let s:line_highlight = 0
let s:colors_set = 0
let s:last_jump_was_next = -1
let s:active_buffers = {}
let s:id_start = 0x100
let s:id_top = s:id_start
let s:id_jump = s:id_start
" Default mappings {{{1
if exists('g:signify_mapping_next_hunk')
exe 'nnoremap '. g:signify_mapping_next_hunk .' :SignifyJumpToNextHunk<cr>'
else
nnoremap <leader>gn :SignifyJumpToNextHunk<cr>
endif
if exists('g:signify_mapping_prev_hunk')
exe 'nnoremap '. g:signify_mapping_prev_hunk .' :SignifyJumpToPrevHunk<cr>'
else
nnoremap <leader>gp :SignifyJumpToPrevHunk<cr>
endif
if exists('g:signify_mapping_toggle_highlight')
exe 'nnoremap '. g:signify_mapping_toggle_highlight .' :SignifyToggleHighlight<cr>'
else
nnoremap <leader>gh :SignifyToggleHighlight<cr>
endif
if exists('g:signify_mapping_toggle')
exe 'nnoremap '. g:signify_mapping_toggle .' :SignifyToggle<cr>'
else
nnoremap <leader>gt :SignifyToggle<cr>
endif
" Default signs {{{1
if exists('g:signify_sign_add')
exe 'sign define SignifyAdd text='. g:signify_sign_add .' texthl=SignifyAdd linehl=none'
else
sign define SignifyAdd text=+ texthl=SignifyAdd linehl=none
endif
if exists('g:signify_sign_delete')
exe 'sign define SignifyDelete text='. g:signify_sign_delete .' texthl=SignifyDelete linehl=none'
else
sign define SignifyDelete text=_ texthl=SignifyDelete linehl=none
endif
if exists('g:signify_sign_change')
exe 'sign define SignifyChange text='. g:signify_sign_change .' texthl=SignifyChange linehl=none'
else
sign define SignifyChange text=! texthl=SignifyChange linehl=none
endif
" Initial stuff {{{1
aug signify
au!
au ColorScheme * call s:set_colors()
au BufWritePost,FocusGained * call s:start()
au BufEnter * let s:colors_set = 0 | call s:start()
au BufDelete * call s:stop() | call s:remove_from_buffer_list(expand('%:p'))
aug END
com! -nargs=0 -bar SignifyToggle call s:toggle_signify()
com! -nargs=0 -bar SignifyToggleHighlight call s:toggle_line_highlighting()
com! -nargs=0 -bar SignifyJumpToNextHunk call s:jump_to_next_hunk()
com! -nargs=0 -bar SignifyJumpToPrevHunk call s:jump_to_prev_hunk()
" Internal functions {{{1
" Functions -> s:start() {{{2
function! s:start() abort
let l:path = expand('%:p')
if empty(l:path) || &ft == 'help'
return
endif
" Check for exceptions.
if exists('g:signify_exceptions_filetype')
for i in g:signify_exceptions_filetype
if i == &ft
return
endif
endfor
endif
if exists('g:signify_exceptions_filename')
for i in g:signify_exceptions_filename
if i == expand('%')
return
endif
endfor
endif
" New buffer.. add to list.
if !has_key(s:active_buffers, l:path)
let s:active_buffers[l:path] = 1
" Inactive buffer.. bail out.
elseif get(s:active_buffers, l:path) == 0
return
endif
" Is a diff available?
let diff = s:get_diff(l:path)
if empty(diff)
sign unplace *
return
endif
" Set colors only for the first time or when a new colorscheme is set.
if !s:colors_set
call s:set_colors()
let s:colors_set = 1
endif
" Use git's diff cmd to set our signs.
call s:process_diff(diff)
endfunction
" Functions -> s:stop() {{{2
function! s:stop() abort
sign unplace *
aug signify
au! * <buffer>
aug END
endfunction
" Functions -> s:toggle_signify() {{{2
function! s:toggle_signify() abort
let l:path = expand('%:p')
if has_key(s:active_buffers, l:path) && get(s:active_buffers, l:path) == 1
call s:stop()
let s:active_buffers[l:path] = 0
else
let s:active_buffers[l:path] = 1
call s:start()
endif
endfunction
" Functions -> s:set_colors() {{{2
func! s:set_colors() abort
if has('gui_running')
let guifg_add = exists('g:signify_color_sign_guifg_add') ? g:signify_color_sign_guifg_add : '#11ee11'
let guifg_delete = exists('g:signify_color_sign_guifg_delete') ? g:signify_color_sign_guifg_delete : '#ee1111'
let guifg_change = exists('g:signify_color_sign_guifg_change') ? g:signify_color_sign_guifg_change : '#eeee11'
if exists('g:signify_color_sign_guibg')
let guibg = g:signify_color_sign_guibg
endif
if !exists('guibg')
let guibg = synIDattr(hlID('LineNr'), 'bg', 'gui')
endif
if empty(guibg) || guibg < 0
exe 'hi SignifyAdd gui=bold guifg='. guifg_add
exe 'hi SignifyDelete gui=bold guifg='. guifg_delete
exe 'hi SignifyChange gui=bold guifg='. guifg_change
else
exe 'hi SignifyAdd gui=bold guifg='. guifg_add .' guibg='. guibg
exe 'hi SignifyDelete gui=bold guifg='. guifg_delete .' guibg='. guibg
exe 'hi SignifyChange gui=bold guifg='. guifg_change .' guibg='. guibg
endif
else
let ctermfg_add = exists('g:signify_color_sign_ctermfg_add') ? g:signify_color_sign_ctermfg_add : 2
let ctermfg_delete = exists('g:signify_color_sign_ctermfg_delete') ? g:signify_color_sign_ctermfg_delete : 1
let ctermfg_change = exists('g:signify_color_sign_ctermfg_change') ? g:signify_color_sign_ctermfg_change : 3
if exists('g:signify_color_sign_ctermbg')
let ctermbg = g:signify_color_sign_ctermbg
endif
if !exists('ctermbg')
let ctermbg = synIDattr(hlID('LineNr'), 'bg', 'cterm')
endif
if empty(ctermbg) || ctermbg < 0
exe 'hi SignifyAdd cterm=bold ctermfg='. ctermfg_add
exe 'hi SignifyDelete cterm=bold ctermfg='. ctermfg_delete
exe 'hi SignifyChange cterm=bold ctermfg='. ctermfg_change
else
exe 'hi SignifyAdd cterm=bold ctermfg='. ctermfg_add .' ctermbg='. ctermbg
exe 'hi SignifyDelete cterm=bold ctermfg='. ctermfg_delete .' ctermbg='. ctermbg
exe 'hi SignifyChange cterm=bold ctermfg='. ctermfg_change .' ctermbg='. ctermbg
endif
endif
endfunc
" Functions -> s:get_diff() {{{2
function! s:get_diff(path) abort
if !executable('grep')
echoerr "signify: I cannot work without grep!"
finish
endif
if executable('git')
let diff = system('git diff --no-ext-diff -U0 '. fnameescape(a:path) .'| grep "^@@ "')
if !v:shell_error
return diff
endif
endif
if executable('hg')
let diff = system('hg diff --nodates -U0 '. fnameescape(a:path) .'| grep "^@@ "')
if !v:shell_error
return diff
endif
endif
if executable('diff')
if executable('svn')
let diff = system('svn diff --diff-cmd diff -x -U0 '. fnameescape(a:path) .'| grep "^@@ "')
if !v:shell_error
return diff
endif
endif
if executable('bzr')
let diff = system('bzr diff --using diff --diff-options=-U0 '. fnameescape(a:path) .'| grep "^@@ "')
if !v:shell_error
return diff
endif
endif
endif
if executable('cvs')
let diff = system('cvs diff -U0 '. fnameescape(expand('%')) .' 2>&1 | grep "^@@ "')
if !empty(diff)
return diff
endif
endif
return []
endfunction
" Functions -> s:process_diff() {{{2
function! s:process_diff(diff) abort
let s:id_top = s:id_start
let l:path = expand('%:p')
sign unplace *
" Determine where we have to put our signs.
for line in split(a:diff, '\n')
" Parse diff output.
let tokens = matchlist(line, '\v^\@\@ -(\d+),?(\d*) \+(\d+),?(\d*)')
if empty(tokens)
echoerr 'signify: I cannot parse this line "'. line .'"'
endif
let [ old_line, old_count, new_line, new_count ] = [ str2nr(tokens[1]), (tokens[2] == '') ? 1 : str2nr(tokens[2]), str2nr(tokens[3]), (tokens[4] == '') ? 1 : str2nr(tokens[4]) ]
" A new line was added.
if (old_count == 0) && (new_count >= 1)
let offset = 0
while offset < new_count
exe 'sign place '. s:id_top .' line='. (new_line + offset) .' name=SignifyAdd file='. l:path
let [ offset, s:id_top ] += [ 1, 1 ]
endwhile
" An old line was removed.
elseif (old_count >= 1) && (new_count == 0)
exe 'sign place '. s:id_top .' line='. new_line .' name=SignifyDelete file='. l:path
let s:id_top += 1
" A line was changed.
elseif (old_count == new_count)
let offset = 0
while offset < new_count
exe 'sign place '. s:id_top .' line='. (new_line + offset) .' name=SignifyChange file='. l:path
let [ offset, s:id_top ] += [ 1, 1 ]
endwhile
else
" Lines were changed and deleted.
if (old_count > new_count)
let offset = 0
while offset < new_count
exe 'sign place '. s:id_top .' line='. (new_line + offset) .' name=SignifyChange file='. l:path
let [ offset, s:id_top ] += [ 1, 1 ]
endwhile
exe 'sign place '. s:id_top .' line='. (new_line + offset - 1) .' name=SignifyDelete file='. l:path
endif
endif
endfor
endfunction
" Functions -> s:toggle_line_highlighting() {{{2
function! s:toggle_line_highlighting() abort
if s:line_highlight
sign define SignifyAdd text=+ texthl=SignifyAdd linehl=none
sign define SignifyDelete text=_ texthl=SignifyDelete linehl=none
sign define SignifyChange text=! texthl=SignifyChange linehl=none
let s:line_highlight = 0
else
let add = exists('g:signify_color_line_highlight_add') ? g:signify_color_line_highlight_add : 'DiffAdd'
let delete = exists('g:signify_color_line_highlight_delete') ? g:signify_color_line_highlight_delete : 'DiffDelete'
let change = exists('g:signify_color_line_highlight_change') ? g:signify_color_line_highlight_change : 'DiffChange'
exe 'sign define SignifyAdd text=+ texthl=SignifyAdd linehl='. add
exe 'sign define SignifyDelete text=_ texthl=SignifyDelete linehl='. delete
exe 'sign define SignifyChange text=! texthl=SignifyChange linehl='. change
let s:line_highlight = 1
endif
call s:start()
endfunction
" Functions -> s:jump_to_next_hunk() {{{2
function! s:jump_to_next_hunk()
if s:last_jump_was_next == 0
let s:id_jump += 2
endif
exe 'sign jump '. s:id_jump .' file='. expand('%:p')
let s:id_jump = (s:id_jump == (s:id_top - 1)) ? (s:id_start) : (s:id_jump + 1)
let s:last_jump_was_next = 1
endfunction
" Functions -> s:jump_to_prev_hunk() {{{2
function! s:jump_to_prev_hunk()
if s:last_jump_was_next == 1
let s:id_jump -= 2
endif
exe 'sign jump '. s:id_jump .' file='. expand('%:p')
let s:id_jump = (s:id_jump == s:id_start) ? (s:id_top - 1) : (s:id_jump - 1)
let s:last_jump_was_next = 0
endfunction
" Functions -> s:remove_from_buffer_list() {{{2
function! s:remove_from_buffer_list(path) abort
if has_key(s:active_buffers, a:path)
call remove(s:active_buffers, a:path)
endif
endfunction
" Functions -> SignifyListActiveBuffers() {{{2
function! SignifyListActiveBuffers() abort
if len(s:active_buffers) == 0
echo 'No active buffers!'
return
endif
for i in items(s:active_buffers)
echo i
endfor
endfunction