233 lines
7.6 KiB
VimL
233 lines
7.6 KiB
VimL
" ======================================================================
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" File: highlight.vim
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" Maintainer: Joshua Potter <jrpotter2112@gmail.com>
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"
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" ======================================================================
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if exists('g:loaded_highlight')
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finish
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endif
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let g:loaded_highlight = 1
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" GLOBAL VARIABLES:
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" ======================================================================
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let g:highlight_register_default_color = 'Yellow'
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" SCRIPT VARIABLES:
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" ======================================================================
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" s:last_seen :: String {{{2
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" ----------------------------------------------------------------------
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" The pattern last appended to a registry list.
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let s:last_seen = @/
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" s:registry_colors :: { String : String } {{{2
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" ----------------------------------------------------------------------
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" Mapping between registry name and color that should be used for
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" highlighting.
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let s:registry_colors = {}
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" s:registry :: { String : { String : Match } } {{{2
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" ----------------------------------------------------------------------
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" Name of register corresponding to a dict of some unique identifier of the
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" word being matched, paired with the actual match object.
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let s:registry = {}
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" FUNCTION: GroupName(reg) {{{1
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" ======================================================================
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" Note group names are not allowed to have special characters; they
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" must be alphanumeric or underscores.
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function! s:GroupName(reg)
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return 'HighlightRegistry_' . char2nr(a:reg)
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endfunction
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" FUNCTION: InitRegister(reg) {{{1
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" ======================================================================
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" Setups the group and highlighting. Matches are added afterward.
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function! s:InitRegister(reg, color)
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call s:ClearRegister(a:reg)
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let s:registry_colors[a:reg] = a:color
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exe 'hi ' . s:GroupName(a:reg) . ' cterm=bold,underline ctermfg=' . a:color
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endfunction
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" FUNCTION: ClearRegister(reg) {{{1
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" ======================================================================
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" Used to clear out the 'registers' that are used to hold which values are
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" highlighted under a certain match group.
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function! s:ClearRegister(reg)
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exe 'hi clear ' . s:GroupName(a:reg)
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if has_key(s:registry_colors, a:reg)
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unlet s:registry_colors[a:reg]
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endif
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if has_key(s:registry, a:reg)
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for key in keys(s:registry[a:reg])
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call matchdelete(s:registry[a:reg][key])
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unlet s:registry[a:reg][key]
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endfor
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unlet s:registry[a:reg]
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endif
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call s:ActivateRegister(a:reg)
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endfunction
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" FUNCTION: CountLastSeen() {{{1
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" ======================================================================
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function! s:CountLastSeen()
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if len(@/) > 0
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let pos = getpos('.')
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let pos[2] = pos[2] - 1
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exe ' %s/' . s:last_seen . '//gne'
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call setpos('.', pos)
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endif
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endfunction
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" FUNCTION: ActivateRegister(reg) {{{1
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" ======================================================================
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" We must actively set the search register to perform searches as expected.
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function! s:ActivateRegister(reg)
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if has_key(s:registry, a:reg) && has_key(s:registry_colors, a:reg)
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let search = ''
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for key in keys(s:registry[a:reg])
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let search = search . key . '\|'
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endfor
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let @/ = search[:-3]
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exe 'hi Search cterm=bold,underline ctermbg=none ctermfg=' . s:registry_colors[a:reg]
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set hlsearch
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else
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let @/ = ''
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endif
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endfunction
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" FUNCTION: AppendToSearch(reg, pattern, ...) {{{1
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" ======================================================================
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function! s:AppendToSearch(reg, pattern)
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let s:last_seen = a:pattern
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if len(a:pattern) > 0
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if !has_key(s:registry_colors, a:reg)
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call s:InitRegister(a:reg, g:highlight_register_default_color)
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endif
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if !has_key(s:registry, a:reg)
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let s:registry[a:reg] = {}
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endif
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" Don't want to add multiple match objects into registry
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if !has_key(s:registry[a:reg], a:pattern)
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let s:registry[a:reg][a:pattern] =
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\ matchadd(s:GroupName(a:reg), a:pattern)
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endif
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call s:ActivateRegister(a:reg)
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endif
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endfunction
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" FUNCTION: GetVisualSelection {{{1
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" ======================================================================
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function! s:GetVisualSelection()
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let [lnum1, col1] = getpos("'<")[1:2]
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let [lnum2, col2] = getpos("'>")[1:2]
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let lines = getline(lnum1, lnum2)
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let lines[-1] = lines[-1][:col2 - (&selection == 'inclusive' ? 1 : 2)]
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let lines[0] = lines[0][col1 - 1:]
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return substitute(escape(join(lines, "\n"), '\\/.*$%~[]'), '\n', '\\n', 'g')
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endfunction
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" FUNCTION: RemoveFromSearch(reg, pattern) {{{1
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" ======================================================================
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function! s:RemoveFromSearch(reg, pattern)
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if has_key(s:registry, a:reg) && has_key(s:registry[a:reg], a:pattern)
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call matchdelete(s:registry[a:reg][a:pattern])
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unlet s:registry[a:reg][a:pattern]
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if len(s:registry[a:reg]) == 0
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unlet s:registry[a:reg]
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endif
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endif
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call s:ActivateRegister(a:reg)
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endfunction
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" PROCEDURE: Initialize {{{1
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" ======================================================================
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exe 'hi Search cterm=bold,underline ctermbg=none ctermfg=' . g:highlight_register_default_color
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call s:InitRegister('0', 'Yellow')
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call s:InitRegister('1', 'Blue')
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call s:InitRegister('2', 'Red')
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call s:InitRegister('3', 'Magenta')
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call s:InitRegister('4', 'Green')
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call s:InitRegister('5', 'Cyan')
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call s:InitRegister('6', 'DarkYellow')
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call s:InitRegister('7', 'White')
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call s:InitRegister('8', 'Gray')
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call s:InitRegister('9', 'Black')
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call s:AppendToSearch(v:register, @/)
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" Word Boundary Search Modifications
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noremap <unique> <silent> <Plug>HighlightRegistry_AppendToSearch
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\ :call <SID>AppendToSearch(v:register, '\<'.expand('<cword>').'\>')<CR>
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\ :call <SID>CountLastSeen()<CR>
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noremap <unique> <silent> <Plug>HighlightRegistry_RemoveFromSearch
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\ :call <SID>RemoveFromSearch(v:register, '\<'.expand('<cword>').'\>')<CR>
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" Arbitrary Search Modifications
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noremap <unique> <silent> <Plug>HighlightRegistry_GlobalAppendToSearch
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\ :call <SID>AppendToSearch(v:register, expand('<cword>'))<CR>
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\ :call <SID>CountLastSeen()<CR>
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noremap <unique> <silent> <Plug>HighlightRegistry_VisualAppendToSearch
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\ :call <SID>AppendToSearch(v:register, <SID>GetVisualSelection())<CR>
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\ :call <SID>CountLastSeen()<CR>
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noremap <unique> <silent> <Plug>HighlightRegistry_VisualRemoveFromSearch
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\ :call <SID>RemoveFromSearch(v:register, <SID>GetVisualSelection())<CR>
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" Register Modifications
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noremap <unique> <silent> <Plug>HighlightRegistry_ClearRegister
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\ :call <SID>ClearRegister(v:register)<CR>
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noremap <unique> <silent> <Plug>HighlightRegistry_ActivateRegister
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\ :call <SID>ActivateRegister(v:register)<CR>
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" Miscellaneous Mappings
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noremap <unique> <silent> <Plug>HighlightRegistry_CountLastSeen
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\ :call <SID>CountLastSeen()<CR>
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" Default Mappings
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nmap & <Plug>HighlightRegistry_AppendToSearch
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nmap * :silent norm! *<CR>&
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nmap # :silent norm! #<CR>&
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nmap g& <Plug>HighlightRegistry_GlobalAppendToSearch
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nmap g* :silent norm! *<CR>g&
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nmap g# :silent norm! #<CR>g&
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nmap y& <Plug>HighlightRegistry_ActivateRegister
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nmap d& <Plug>HighlightRegistry_RemoveFromSearch
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nmap c& <Plug>HighlightRegistry_ClearRegister
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vmap & <Plug>HighlightRegistry_VisualAppendToSearch'<
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vmap * &n<Plug>HighlightRegistry_CountLastSeen
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vmap # &N<Plug>HighlightRegistry_CountLastSeen
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vmap d& <Plug>HighlightRegistry_VisualRemoveFromSearch'<
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