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highlighter.vim
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highlighter.vim
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" MIT License. Copyright (c) 2013-2021 Bailey Ling Christian Brabandt et al.
" vim: et ts=2 sts=2 sw=2 et
scriptencoding utf-8
let s:is_win32term = (has('win32') || has('win64')) &&
\ !has('gui_running') &&
\ (empty($CONEMUBUILD) || &term !=? 'xterm') &&
\ empty($WT_SESSION) &&
\ !(exists("+termguicolors") && &termguicolors)
let s:separators = {}
let s:accents = {}
let s:hl_groups = {}
if !exists(":def") || !airline#util#has_vim9_script()
" Legacy Vimscript implementation
function! s:gui2cui(rgb, fallback) abort
if a:rgb == ''
return a:fallback
elseif match(a:rgb, '^\%(NONE\|[fb]g\)$') > -1
return a:rgb
elseif a:rgb[0] !~ '#'
" a:rgb contains colorname
return a:rgb
endif
let rgb = map(split(a:rgb[1:], '..\zs'), '0 + ("0x".v:val)')
return airline#msdos#round_msdos_colors(rgb)
endfunction
function! s:group_not_done(list, name) abort
if index(a:list, a:name) == -1
call add(a:list, a:name)
return 1
else
if &vbs
echomsg printf("airline: group: %s already done, skipping", a:name)
endif
return 0
endif
endfu
function! s:get_syn(group, what, mode) abort
let color = ''
if hlexists(a:group)
let color = synIDattr(synIDtrans(hlID(a:group)), a:what, a:mode)
endif
if empty(color) || color == -1
" should always exist
let color = synIDattr(synIDtrans(hlID('Normal')), a:what, a:mode)
" however, just in case
if empty(color) || color == -1
let color = 'NONE'
endif
endif
return color
endfunction
function! s:get_array(guifg, guibg, ctermfg, ctermbg, opts) abort
return [ a:guifg, a:guibg, a:ctermfg, a:ctermbg, empty(a:opts) ? '' : join(a:opts, ',') ]
endfunction
function! airline#highlighter#reset_hlcache() abort
let s:hl_groups = {}
endfunction
function! airline#highlighter#get_highlight(group, ...) abort
" only check for the cterm reverse attribute
" TODO: do we need to check all modes (gui, term, as well)?
let reverse = synIDattr(synIDtrans(hlID(a:group)), 'reverse', 'cterm')
if get(g:, 'airline_highlighting_cache', 0) && has_key(s:hl_groups, a:group)
let res = s:hl_groups[a:group]
return reverse ? [ res[1], res[0], res[3], res[2], res[4] ] : res
else
let ctermfg = s:get_syn(a:group, 'fg', 'cterm')
let ctermbg = s:get_syn(a:group, 'bg', 'cterm')
let guifg = s:get_syn(a:group, 'fg', 'gui')
let guibg = s:get_syn(a:group, 'bg', 'gui')
let bold = synIDattr(synIDtrans(hlID(a:group)), 'bold')
if reverse
let res = s:get_array(guibg, guifg, ctermbg, ctermfg, bold ? ['bold'] : a:000)
else
let res = s:get_array(guifg, guibg, ctermfg, ctermbg, bold ? ['bold'] : a:000)
endif
endif
let s:hl_groups[a:group] = res
return res
endfunction
function! airline#highlighter#get_highlight2(fg, bg, ...) abort
let guifg = s:get_syn(a:fg[0], a:fg[1], 'gui')
let guibg = s:get_syn(a:bg[0], a:bg[1], 'gui')
let ctermfg = s:get_syn(a:fg[0], a:fg[1], 'cterm')
let ctermbg = s:get_syn(a:bg[0], a:bg[1], 'cterm')
return s:get_array(guifg, guibg, ctermfg, ctermbg, a:000)
endfunction
function! s:hl_group_exists(group) abort
if !hlexists(a:group)
return 0
elseif empty(synIDattr(synIDtrans(hlID(a:group)), 'fg'))
return 0
endif
return 1
endfunction
function! s:CheckDefined(colors) abort
" Checks, whether the definition of the colors is valid and is not empty or NONE
" e.g. if the colors would expand to this:
" hi airline_c ctermfg=NONE ctermbg=NONE
" that means to clear that highlighting group, therefore, fallback to Normal
" highlighting group for the cterm values
" This only works, if the Normal highlighting group is actually defined, so
" return early, if it has been cleared
if !exists("g:airline#highlighter#normal_fg_hi")
let g:airline#highlighter#normal_fg_hi = synIDattr(synIDtrans(hlID('Normal')), 'fg', 'cterm')
endif
if empty(g:airline#highlighter#normal_fg_hi) || g:airline#highlighter#normal_fg_hi < 0
return a:colors
endif
for val in a:colors
if !empty(val) && val !=# 'NONE'
return a:colors
endif
endfor
" this adds the bold attribute to the term argument of the :hi command,
" but at least this makes sure, the group will be defined
let fg = g:airline#highlighter#normal_fg_hi
let bg = synIDattr(synIDtrans(hlID('Normal')), 'bg', 'cterm')
if empty(bg) || bg < 0
" in case there is no background color defined for Normal
let bg = a:colors[3]
endif
return a:colors[0:1] + [fg, bg] + [a:colors[4]]
endfunction
function! s:GetHiCmd(list) abort
" a:list needs to have 5 items!
let res = ''
let i = -1
while i < 4
let i += 1
let item = get(a:list, i, '')
if item is ''
continue
endif
if i == 0
let res .= ' guifg='.item
elseif i == 1
let res .= ' guibg='.item
elseif i == 2
let res .= ' ctermfg='.item
elseif i == 3
let res .= ' ctermbg='.item
elseif i == 4
let res .= printf(' gui=%s cterm=%s term=%s', item, item, item)
endif
endwhile
return res
endfunction
function! airline#highlighter#load_theme() abort
if pumvisible()
return
endif
for winnr in filter(range(1, winnr('$')), 'v:val != winnr()')
call airline#highlighter#highlight_modified_inactive(winbufnr(winnr))
endfor
call airline#highlighter#highlight(['inactive'])
if getbufvar( bufnr('%'), '&modified' ) && &buftype != 'terminal'
call airline#highlighter#highlight(['normal', 'modified'])
else
call airline#highlighter#highlight(['normal'])
endif
endfunction
function! airline#highlighter#add_accent(accent) abort
let s:accents[a:accent] = 1
endfunction
function! airline#highlighter#add_separator(from, to, inverse) abort
let s:separators[a:from.a:to] = [a:from, a:to, a:inverse]
call <sid>exec_separator({}, a:from, a:to, a:inverse, '')
endfunction
function! s:exec_separator(dict, from, to, inverse, suffix) abort
if pumvisible()
return
endif
let group = a:from.'_to_'.a:to.a:suffix
let l:from = airline#themes#get_highlight(a:from.a:suffix)
let l:to = airline#themes#get_highlight(a:to.a:suffix)
if a:inverse
let colors = [ l:from[1], l:to[1], l:from[3], l:to[3] ]
else
let colors = [ l:to[1], l:from[1], l:to[3], l:from[3] ]
endif
let a:dict[group] = colors
call airline#highlighter#exec(group, colors)
endfunction
function! airline#highlighter#highlight_modified_inactive(bufnr) abort
if getbufvar(a:bufnr, '&modified')
let colors = exists('g:airline#themes#{g:airline_theme}#palette.inactive_modified.airline_c')
\ ? g:airline#themes#{g:airline_theme}#palette.inactive_modified.airline_c : []
else
let colors = exists('g:airline#themes#{g:airline_theme}#palette.inactive.airline_c')
\ ? g:airline#themes#{g:airline_theme}#palette.inactive.airline_c : []
endif
if !empty(colors)
call airline#highlighter#exec('airline_c'.(a:bufnr).'_inactive', colors)
endif
endfunction
function! airline#highlighter#exec(group, colors) abort
if pumvisible()
return
endif
let colors = a:colors
if len(colors) == 4
call add(colors, '')
endif
" colors should always be string values
let colors = map(copy(colors), 'type(v:val) != type("") ? string(v:val) : v:val')
if s:is_win32term
let colors[2] = s:gui2cui(get(colors, 0, ''), get(colors, 2, ''))
let colors[3] = s:gui2cui(get(colors, 1, ''), get(colors, 3, ''))
endif
let old_hi = airline#highlighter#get_highlight(a:group)
let new_hi = [colors[0], colors[1], printf('%s', colors[2]), printf('%s', colors[3]), colors[4]]
let colors = s:CheckDefined(colors)
if old_hi != new_hi || !s:hl_group_exists(a:group)
let cmd = printf('hi %s%s', a:group, s:GetHiCmd(colors))
try
exe cmd
catch /^Vim\%((\a\+)\)\=:E421:/ " color definition not found
let group=matchstr(v:exception, '\w\+\ze=')
let color=matchstr(v:exception, '=\zs\w\+')
let cmd=substitute(cmd, color, 'grey', 'g')
exe cmd
call airline#util#warning('color definition for group ' . a:group . ' not found, using grey as fallback')
catch
call airline#util#warning('Error when running command: '. cmd)
endtry
if has_key(s:hl_groups, a:group)
let s:hl_groups[a:group] = colors
endif
endif
endfunction
function! airline#highlighter#highlight(modes, ...) abort
let bufnr = a:0 ? a:1 : ''
let p = g:airline#themes#{g:airline_theme}#palette
" draw the base mode, followed by any overrides
let mapped = map(a:modes, 'v:val == a:modes[0] ? v:val : a:modes[0]."_".v:val')
let suffix = a:modes[0] == 'inactive' ? '_inactive' : ''
let airline_grouplist = []
let buffers_in_tabpage = sort(tabpagebuflist())
if exists("*uniq")
let buffers_in_tabpage = uniq(buffers_in_tabpage)
endif
" mapped might be something like ['normal', 'normal_modified']
" if a group is in both modes available, only define the second
" that is how this was done previously overwrite the previous definition
for mode in reverse(mapped)
if exists('g:airline#themes#{g:airline_theme}#palette[mode]')
let dict = g:airline#themes#{g:airline_theme}#palette[mode]
for kvp in items(dict)
let mode_colors = kvp[1]
let name = kvp[0]
if name is# 'airline_c' && !empty(bufnr) && suffix is# '_inactive'
let name = 'airline_c'.bufnr
endif
" do not re-create highlighting for buffers that are no longer visible
" in the current tabpage
if name =~# 'airline_c\d\+'
let bnr = matchstr(name, 'airline_c\zs\d\+') + 0
if bnr > 0 && index(buffers_in_tabpage, bnr) == -1
continue
endif
elseif (name =~# '_to_') || (name[0:10] is# 'airline_tab' && !empty(suffix))
" group will be redefined below at exec_separator
" or is not needed for tabline with '_inactive' suffix
" since active flag is 1 for builder)
continue
endif
if s:group_not_done(airline_grouplist, name.suffix)
call airline#highlighter#exec(name.suffix, mode_colors)
endif
if !has_key(p, 'accents')
" work around a broken installation
" shouldn't actually happen, p should always contain accents
continue
endif
for accent in keys(s:accents)
if !has_key(p.accents, accent)
continue
endif
let colors = copy(mode_colors)
if p.accents[accent][0] != ''
let colors[0] = p.accents[accent][0]
endif
if p.accents[accent][2] != ''
let colors[2] = p.accents[accent][2]
endif
if len(colors) >= 5
let colors[4] = get(p.accents[accent], 4, '')
else
call add(colors, get(p.accents[accent], 4, ''))
endif
if s:group_not_done(airline_grouplist, name.suffix.'_'.accent)
call airline#highlighter#exec(name.suffix.'_'.accent, colors)
endif
endfor
endfor
if empty(s:separators)
" nothing to be done
continue
endif
" TODO: optimize this
for sep in items(s:separators)
" we cannot check, that the group already exists, else the separators
" might not be correctly defined. But perhaps we can skip above groups
" that match the '_to_' name, because they would be redefined here...
call <sid>exec_separator(dict, sep[1][0], sep[1][1], sep[1][2], suffix)
endfor
endif
endfor
endfunction
" End legacy VimScript
finish
else
" This is using Vim9 script
def s:gui2cui(rgb: string, fallback: string): string
if empty(rgb)
return fallback
elseif match(rgb, '^\%(NONE\|[fb]g\)$') > -1
return rgb
elseif rgb !~ '#'
# rgb contains colorname
return rgb
endif
var _rgb = []
_rgb = mapnew(split(rgb[1 : ], '..\zs'), (_, v) => ('0x' .. v)->str2nr(16))
return airline#msdos#round_msdos_colors(_rgb)
enddef
def s:group_not_done(list: list<string>, name: string): bool
if index(list, name) == -1
add(list, name)
return true
else
if &vbs
echomsg printf("airline: group: %s already done, skipping", name)
endif
return false
endif
enddef
def s:get_syn(group: string, what: string, mode: string): string
var color = ''
if hlexists(group)
color = hlID(group)->synIDtrans()->synIDattr(what, mode)
endif
if empty(color) || str2nr(color) == -1
# Normal highlighting group should always exist
color = hlID('Normal')->synIDtrans()->synIDattr(what, mode)
# however, just in case
if empty(color) || str2nr(color) == -1
color = 'NONE'
endif
endif
return color
enddef
def s:get_array(guifg: string, guibg: string, ctermfg: string, ctermbg: string, opts: list<string>): list<string>
return [ guifg, guibg, ctermfg, ctermbg, empty(opts) ? '' : join(opts, ',') ]
enddef
def airline#highlighter#reset_hlcache(): void
s:hl_groups = {}
enddef
def airline#highlighter#get_highlight(group: string, rest: list<string> = ['']): list<string>
# only check for the cterm reverse attribute
# TODO: do we need to check all modes (gui, term, as well)?
var reverse = false
var bold = false
var property: string
var res = []
var ctermfg: string
var ctermbg: string
var guifg: string
var guibg: string
property = hlID(group)->synIDtrans()->synIDattr('reverse', 'cterm')
if !empty(property) && property->str2nr()
reverse = true
endif
if get(g:, 'airline_highlighting_cache', 0) && has_key(s:hl_groups, group)
res = s:hl_groups[group]
return reverse ? [ res[1], res[0], res[3], res[2], res[4] ] : res
else
ctermfg = s:get_syn(group, 'fg', 'cterm')
ctermbg = s:get_syn(group, 'bg', 'cterm')
guifg = s:get_syn(group, 'fg', 'gui')
guibg = s:get_syn(group, 'bg', 'gui')
property = hlID(group)->synIDtrans()->synIDattr('bold')
if !empty(property) && property->str2nr()
bold = true
endif
if reverse
res = s:get_array(guibg, guifg, ctermbg, ctermfg, bold ? ['bold'] : rest)
else
res = s:get_array(guifg, guibg, ctermfg, ctermbg, bold ? ['bold'] : rest)
endif
endif
s:hl_groups[group] = res
return res
enddef
def airline#highlighter#get_highlight2(fg: list<string>, bg: list<string>, ...rest: list<string>): list<string>
var guifg = s:get_syn(fg[0], fg[1], 'gui')
var guibg = s:get_syn(bg[0], bg[1], 'gui')
var ctermfg = s:get_syn(fg[0], fg[1], 'cterm')
var ctermbg = s:get_syn(bg[0], bg[1], 'cterm')
return s:get_array(guifg, guibg, ctermfg, ctermbg, filter(rest, (_, v) => !empty(v)))
enddef
def s:hl_group_exists(group: string): bool
if !hlexists(group)
return false
elseif hlID(group)->synIDtrans()->synIDattr('fg')->empty()
return false
endif
return true
enddef
def s:CheckDefined(colors: list<any>): list<any>
# Checks, whether the definition of the colors is valid and is not empty or NONE
# e.g. if the colors would expand to this:
# hi airline_c ctermfg=NONE ctermbg=NONE
# that means to clear that highlighting group, therefore, fallback to Normal
# highlighting group for the cterm values
# This only works, if the Normal highlighting group is actually defined,
# so return early, if it has been cleared
if !exists("g:airline#highlighter#normal_fg_hi")
g:airline#highlighter#normal_fg_hi = hlID('Normal')->synIDtrans()->synIDattr('fg', 'cterm')
endif
if empty(g:airline#highlighter#normal_fg_hi) || str2nr(g:airline#highlighter#normal_fg_hi) < 0
return colors
endif
for val in colors
if !empty(val) && val !=# 'NONE'
return colors
endif
endfor
# this adds the bold attribute to the term argument of the :hi command,
# but at least this makes sure, the group will be defined
var fg = g:airline#highlighter#normal_fg_hi
var bg = hlID('Normal')->synIDtrans()->synIDattr('bg', 'cterm')
if empty(bg) || str2nr(bg) < 0
# in case there is no background color defined for Normal
bg = colors[3]
endif
return colors[ 0 : 1 ] + [fg, bg] + [colors[4]]
enddef
def s:GetHiCmd(list: list<string>): string
# list needs to have 5 items!
var res: string
var i = -1
var item: string
while i < 4
i += 1
item = get(list, i, '')
if item is ''
continue
endif
if i == 0
res ..= ' guifg=' .. item
elseif i == 1
res ..= ' guibg=' .. item
elseif i == 2
res ..= ' ctermfg=' .. item
elseif i == 3
res ..= ' ctermbg=' .. item
elseif i == 4
res ..= printf(' gui=%s cterm=%s term=%s', item, item, item)
endif
endwhile
return res
enddef
def airline#highlighter#load_theme(): void
if pumvisible()
return
endif
for winnr in filter(range(1, winnr('$')), (_, v) => v != winnr())
airline#highlighter#highlight_modified_inactive(winbufnr(winnr))
endfor
airline#highlighter#highlight(['inactive'])
if getbufvar( bufnr('%'), '&modified' ) && &buftype != 'terminal'
airline#highlighter#highlight(['normal', 'modified'])
else
airline#highlighter#highlight(['normal'])
endif
enddef
def airline#highlighter#add_accent(accent: string): void
s:accents[accent] = 1
enddef
def airline#highlighter#add_separator(from: string, to: string, inverse: bool): void
s:separators[from .. to] = [from, to, inverse]
s:exec_separator({}, from, to, inverse, '')
enddef
def s:exec_separator(dict: dict<any>, from_arg: string, to_arg: string, inverse: bool, suffix: string): void
if pumvisible()
return
endif
var group = from_arg .. '_to_' .. to_arg .. suffix
var from = mapnew(airline#themes#get_highlight(from_arg .. suffix), (_, v) => type(v) != type('') ? string(v) : v)
var colors = []
var to = mapnew(airline#themes#get_highlight(to_arg .. suffix), (_, v) => type(v) != type('') ? string(v) : v)
if inverse
colors = [ from[1], to[1], from[3], to[3] ]
else
colors = [ to[1], from[1], to[3], from[3] ]
endif
dict[group] = colors
airline#highlighter#exec(group, colors)
enddef
def airline#highlighter#highlight_modified_inactive(bufnr: number): void
var colors: list<any>
var dict1 = eval('g:airline#themes#' .. g:airline_theme .. '#palette')->get('inactive_modified', {})
var dict2 = eval('g:airline#themes#' .. g:airline_theme .. '#palette')->get('inactive', {})
if empty(dict2)
return
endif
if getbufvar(bufnr, '&modified')
colors = get(dict1, 'airline_c', [])
else
colors = get(dict2, 'airline_c', [])
endif
if !empty(colors)
airline#highlighter#exec('airline_c' .. bufnr .. '_inactive', colors)
endif
enddef
def airline#highlighter#exec(group: string, clrs: list<any>): void
if pumvisible()
return
endif
var colors: list<string> = mapnew(copy(clrs), (_, v) => type(v) != type('') ? string(v) : v)
if len(colors) == 4
add(colors, '')
endif
if s:is_win32term
colors[2] = s:gui2cui(get(colors, 0, ''), get(colors, 2, ''))
colors[3] = s:gui2cui(get(colors, 1, ''), get(colors, 3, ''))
endif
var old_hi: list<string> = airline#highlighter#get_highlight(group)
var new_hi: list<string> = colors
if old_hi != new_hi || !s:hl_group_exists(group)
var cmd = printf('hi %s%s', group, s:GetHiCmd(colors))
try
:exe cmd
catch /^Vim\%((\a\+)\)\=:E421:/
var grp = matchstr(v:exception, '\w\+\ze=')
var clr = matchstr(v:exception, '=\zs\w\+')
cmd = substitute(cmd, clr, 'grey', 'g')
:exe cmd
airline#util#warning('color ' .. clr .. ' definition for group ' .. grp .. ' not found, using grey as fallback')
catch
airline#util#warning('Error when running command: ' .. cmd)
endtry
if has_key(s:hl_groups, group)
s:hl_groups[group] = colors
endif
endif
enddef
def airline#highlighter#highlight(modes: list<string>, bufnr: string = ''): void
var p: dict<any> = eval('g:airline#themes#' .. g:airline_theme .. '#palette')
# draw the base mode, followed by any overrides
var mapped = map(modes, (_, v) => v == modes[0] ? v : modes[0] .. "_" .. v)
var suffix = ''
if modes[0] == 'inactive'
suffix = '_inactive'
endif
var airline_grouplist = []
var dict: dict<any>
var bnr: number = 0
var buffers_in_tabpage: list<number> = uniq(sort(tabpagebuflist()))
# mapped might be something like ['normal', 'normal_modified']
# if a group is in both modes available, only define the second
# that is how this was done previously overwrite the previous definition
for mode in reverse(mapped)
if exists('g:airline#themes#' .. g:airline_theme .. '#palette.' .. mode)
dict = eval('g:airline#themes#' .. g:airline_theme .. '#palette.' .. mode)
for kvp in items(dict)
var mode_colors = kvp[1]
var name = kvp[0]
if name == 'airline_c' && !empty(bufnr) && suffix == '_inactive'
name = 'airline_c' .. bufnr
endif
# do not re-create highlighting for buffers that are no longer visible
# in the current tabpage
if name =~# 'airline_c\d\+'
bnr = matchstr(name, 'airline_c\zs\d\+')->str2nr()
if bnr > 0 && index(buffers_in_tabpage, bnr) == -1
continue
endif
elseif (name =~ '_to_') || (name[ 0 : 10 ] == 'airline_tab' && !empty(suffix))
# group will be redefined below at exec_separator
# or is not needed for tabline with '_inactive' suffix
# since active flag is 1 for builder)
continue
endif
if s:group_not_done(airline_grouplist, name .. suffix)
airline#highlighter#exec(name .. suffix, mode_colors)
endif
if !has_key(p, 'accents')
# shouldn't actually happen, p should always contain accents
continue
endif
for accent in keys(s:accents)
if !has_key(p.accents, accent)
continue
endif
var colors = copy(mode_colors)
if p.accents[accent][0] != ''
colors[0] = p.accents[accent][0]
endif
if type(get(p.accents[accent], 2, '')) == type('')
colors[2] = get(p.accents[accent], 2, '')
else
colors[2] = string(p.accents[accent][2])
endif
if len(colors) >= 5
colors[4] = get(p.accents[accent], 4, '')
else
add(colors, get(p.accents[accent], 4, ''))
endif
if s:group_not_done(airline_grouplist, name .. suffix .. '_' .. accent)
airline#highlighter#exec(name .. suffix .. '_' .. accent, colors)
endif
endfor
endfor
if empty(s:separators)
continue
endif
for sep in items(s:separators)
# we cannot check, that the group already exists, else the separators
# might not be correctly defined. But perhaps we can skip above groups
# that match the '_to_' name, because they would be redefined here...
s:exec_separator(dict, sep[1][0], sep[1][1], sep[1][2], suffix)
endfor
endif
endfor
enddef
endif