Highlight functinoality
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@ -10,122 +10,182 @@ 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:highlight_register_color :: { String : String } {{{2
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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:highlight_register_color = {}
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let s:registry_colors = {}
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" s:matches :: { String : Match } {{{2
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" s:registry :: { String : { String : Match } } {{{2
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" ----------------------------------------------------------------------
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" List of matches corresponding to the registry.
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let s:matches = {}
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" s:registry :: { String : [String] } {{{2
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" ----------------------------------------------------------------------
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" Name of register corresponding to a list of the keys used in the
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" s:matches corresponding to the match of the word in said register.
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" Used to find the matches that can be deleted later on.
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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: MatchName(reg, word) {{{1
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" ======================================================================
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function! s:MatchName(reg, word)
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return a:reg . '_' . word
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endfunction
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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 'PlugHighlightRegister_' . a:reg
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return 'HighlightRegistry_' . char2nr(a:reg)
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endfunction
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" FUNCTION: ClearHighlightRegister(reg) {{{1
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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:ClearHighlightRegister(reg)
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function! s:ClearRegister(reg)
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exe 'hi clear ' . s:GroupName(a:reg)
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unlet s:highlight_register_color[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 m in s:registry[a:reg]
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matchdelete(s:matches[s:registry[a:reg]])
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unlet s:matches[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: InitHighlightRegister(reg) {{{1
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" FUNCTION: ActivateRegister(reg) {{{1
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" ======================================================================
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" Setups the group and highlighting. Matches are added afterward
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" We must actively set the search register to perform searches as expected.
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function! s:InitHighlightRegister(reg, color)
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call c:ClearHighlightRegister(a:reg)
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let s:highlight_register_color[a:reg] = a:color
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exe 'hi ' . s:GroupName(a:reg) . ' cterm=bold, underline ctermbg=' . a:color
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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, word) {{{1
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" FUNCTION: AppendToSearch(reg, pattern) {{{1
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" ======================================================================
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function! s:AppendToSearch(reg, word)
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let m = matchadd(s:GroupName(a:reg), '\<' . a:word . '\>')
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let s:matches[s:MatchName(a:reg, a:word)] = l:m
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function! s:AppendToSearch(reg, pattern)
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let s:last_seen = a:pattern
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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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let s:registry[a:reg] = {}
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endif
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append(s:registry[a:reg], s:MatchName(a:reg, a:word))
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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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endfunction
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" FUNCTION: RemoveFromSearch(reg, word) {{{1
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" FUNCTION: AppendToSearchForward(reg, pattern) {{{1
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" ======================================================================
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function! s:RemoveFromSearch(reg, word)
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matchdelete(s:matches[s:MatchName(a:reg, a:word)])
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unlet s:matches[s:MatchName(a:reg, a:word)]
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let i = 0
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while i < len(s:registry[a:reg])
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if s:registry[a:reg] == s:MatchName(a:reg, a:word)
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unlet s:registry[a:reg][i]
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break
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endif
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i = i + 1
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endwhile
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function! s:AppendToSearchForward(reg, pattern)
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call s:AppendToSearch(a:reg, a:pattern)
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normal! *
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endfunction
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" FUNCTION: AppendToSearchBackward(reg, pattern) {{{1
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" ======================================================================
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function! s:AppendToSearchBackward(reg, pattern)
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call s:AppendToSearch(a:reg, a:pattern)
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normal! #
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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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" FUNCTION: Initialize {{{1
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" PROCEDURE: Initialize {{{1
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" ======================================================================
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call s:InitHighlightRegister('0', 'Yellow')
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call s:InitHighlightRegister('1', 'DarkYellow')
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call s:InitHighlightRegister('2', 'Red')
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call s:InitHighlightRegister('3', 'DarkRed')
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call s:InitHighlightRegister('4', 'Green')
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call s:InitHighlightRegister('5', 'DarkGreen')
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call s:InitHighlightRegister('6', 'Blue')
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call s:InitHighlightRegister('7', 'DarkBlue')
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call s:InitHighlightRegister('8', 'Magenta')
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call s:InitHighlightRegister('9', 'DarkMagenta')
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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', 'DarkYellow')
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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', 'Blue')
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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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noremap <unique> <silent> <Plug>HighlightRegistry_AppendToSearch
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\ :call <SID>AppendToSearch(v:register, '\<'.expand('<cword>').'\>')<CR>
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noremap <unique> <silent> <Plug>HighlightRegistry_Forward_AppendToSearch
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\ :call <SID>AppendToSearchForward(v:register, '\<'.expand('<cword>').'\>')<CR>
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noremap <unique> <silent> <Plug>HighlightRegistry_Backward_AppendToSearch
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\ :call <SID>AppendToSearchBackward(v:register, '\<'.expand('<cword>').'\>')<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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noremap <unique> <silent> <Plug>HighlightRegistry_ClearRegister
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\ :call <SID>ClearRegister(v:register)<CR>
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" Basic Mappings
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nmap & <Plug>HighlightRegistry_AppendToSearch
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nmap * <Plug>HighlightRegistry_Forward_AppendToSearch
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nmap # <Plug>HighlightRegistry_Backward_AppendToSearch
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" Additional Register Modifiers
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nmap d& <Plug>HighlightRegistry_RemoveFromSearch
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nmap c& <Plug>HighlightRegistry_ClearRegister
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" Other Mappings
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nmap n :norm! nzzzv<CR>
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nmap N :norm! Nzzzv<CR>
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