2026-01-25 09:38:17 +01:00

941 lines
33 KiB
VimL

" spotdiff.vim : A range and area selectable :diffthis to compare partially
"
" Last Change: 2025/10/23
" Version: 6.0
" Author: Rick Howe (Takumi Ohtani) <rdcxy754@ybb.ne.jp>
" Copyright: (c) 2014-2025 by Rick Howe
" License: MIT
let s:save_cpo = &cpoptions
set cpo&vim
" --------------------------------------
" a range of lines selectable spotdiff
" --------------------------------------
let s:RSD = 'r_spotdiff'
function! spotdiff#Diffthis(sl, el) abort
let rn = !exists('t:RSDiff') ? 0 : len(t:RSDiff)
if rn != len(filter(gettabinfo(tabpagenr())[0].windows,
\'getwinvar(v:val, "&diff")'))
call s:EchoWarning('More/less diff mode windows exist in this tab page!')
return
elseif rn == 2
call s:EchoWarning('2 pairs of range already selected in this tab page!')
return
endif
let cw = win_getid() | let cb = winbufnr(cw)
for tn in filter(range(1, tabpagenr('$')), 'v:val != tabpagenr()')
let sd = gettabvar(tn, 'RSDiff')
if !empty(sd) && index(map(values(sd), 'v:val.bnr'), cb) != -1
call s:EchoWarning('This buffer already selected in tab page ' . tn .
\'!')
return
endif
endfor
if rn == 0 | let t:RSDiff = {} | endif
let [k, j] = has_key(t:RSDiff, 1) ? [2, 1] : [1, 2]
if empty(t:RSDiff) || t:RSDiff[j].bnr != cb
" diffthis on the 1st or the 2nd different buffer
let t:RSDiff[k] = #{wid: cw, bnr: cb, sel: [a:sl, a:el]}
else
" diffthis on the 2nd same buffer
" save winfix options and set them in all non-RSDiff windows
for w in gettabinfo(tabpagenr())[0].windows
if w != t:RSDiff[j].wid
let wf = {}
for hw in ['winfixheight', 'winfixwidth']
let wf[hw] = getwinvar(w, '&' . hw)
call setwinvar(w, '&' . hw, 1)
endfor
call setwinvar(w, 'RSDiffWFX', wf)
endif
endfor
let tx = getline(a:sl, a:el)
let wo = getwinvar(cw, '&', {})
let bo = getbufvar(cb, '&', {})
" get width or height of a clone window, create it, copy the selected text
let vt = (&diffopt =~ 'vertical')
if vt
let mw = (winwidth(0) - 1) / 2
else
let mh = (winheight(0) - 1) / 2
let lc = [line('.'), col('.')]
call cursor([a:sl, 1]) | let ch = winline()
call cursor([a:el, col([a:el, '$'])]) | let ch = winline() - ch + 1
call cursor(lc)
let ch = max([ch, a:el - a:sl + 1])
endif
if t:RSDiff[j].wid != cw
" move to the original split window
let cw = t:RSDiff[j].wid
noautocmd call win_gotoid(t:RSDiff[j].wid)
endif
let ab = (vt && &splitright || !vt && &splitbelow ||
\t:RSDiff[j].sel[0] <= a:sl) ? 'belowright' : 'aboveleft'
call execute(ab . ' ' . (vt ? mw . 'vnew' : min([ch, mh]) . 'new'))
call setline(1, tx)
let t:RSDiff[k] = #{wid: win_getid(), bnr: bufnr('%'),
\sel: [1, a:el - a:sl + 1], cln: cw}
endif
call s:RS_ToggleDiffexpr(1)
call execute('diffthis')
call s:RS_DrawClearSel(1, k)
if has_key(t:RSDiff[k], 'cln')
silent! call map(wo, 'setwinvar(t:RSDiff[k].wid, "&" . v:key, v:val)')
silent! call map(bo, 'setbufvar(t:RSDiff[k].bnr, "&" . v:key, v:val)')
" set some specific local options
let &l:modifiable = 0
let &l:buftype = 'nofile'
let &l:bufhidden = 'wipe'
let &l:buflisted = 0
let &l:swapfile = 0
if !vt
" adjust height of clone window with foldclosed and diff filler lines
let xh = 0 | let l = 1
while l <= line('$') + 1
let fe = foldclosedend(l)
if fe != -1 | let xh -= fe - l | let l = fe
else | let xh += diff_filler(l)
endif
let l += 1
endwhile
if xh != 0 | call execute('resize ' . min([ch + xh, mh])) | endif
endif
endif
call s:RS_ToggleEvent(1)
endfunction
function! spotdiff#Diffoff(all) abort
if !exists('t:RSDiff') | return | endif
let cw = win_getid()
let sk = keys(t:RSDiff)
if !a:all
call filter(sk, 't:RSDiff[v:val].wid == cw')
if empty(sk) | return | endif
if len(t:RSDiff) == 2 && has_key(t:RSDiff[(sk[0] == 1) ? 2 : 1], 'cln')
let sk = [1, 2]
endif
endif
for k in sk
if win_id2win(t:RSDiff[k].wid) != 0
noautocmd call win_gotoid(t:RSDiff[k].wid)
call s:RS_DrawClearSel(0, k)
call execute('diffoff')
call s:RS_ToggleDiffexpr(0)
if has_key(t:RSDiff[k], 'cln')
let [cw, qw] = [t:RSDiff[k].wid == cw ? t:RSDiff[k].cln : cw,
\win_id2win(t:RSDiff[k].wid)]
endif
else
call s:RS_ToggleDiffexpr(0)
if has_key(t:RSDiff[k], 'cln')
let [cw, qw] = [t:RSDiff[k].cln, 0]
else
call s:RS_DrawClearSel(0, k)
endif
endif
unlet t:RSDiff[k]
endfor
if empty(t:RSDiff) | unlet t:RSDiff | endif
noautocmd call win_gotoid(cw)
if a:all | call execute('diffoff!') | endif
if exists('qw')
" finally quit clone window and then restore winfix options
if qw != 0
call execute((exists('#diffchar#CursorHold') ? '' : 'noautocmd ') . qw .
\'quit!')
endif
for w in gettabinfo(tabpagenr())[0].windows
let wv = getwinvar(w, '')
if has_key(wv, 'RSDiffWFX')
for [hw, vl] in items(wv.RSDiffWFX)
call setwinvar(w, '&' . hw, vl)
endfor
unlet wv.RSDiffWFX
endif
endfor
endif
call s:RS_ToggleEvent(0)
endfunction
function! spotdiff#Diffupdate() abort
if !exists('t:RSDiff') || len(t:RSDiff) != 2 | return | endif
let rd = deepcopy(t:RSDiff)
for k in [1, 2]
if has_key(rd[k], 'cln') | call remove(t:RSDiff[k], 'cln') | endif
endfor
call spotdiff#Diffoff(1)
let cw = win_getid()
for k in [1, 2]
noautocmd call win_gotoid(rd[k].wid)
call spotdiff#Diffthis(rd[k].sel[0], rd[k].sel[-1])
if has_key(rd[k], 'cln') | let t:RSDiff[k].cln = rd[k].cln | endif
endfor
noautocmd call win_gotoid(cw)
endfunction
function! s:RS_ToggleDiffexpr(on) abort
let rd = exists('t:RSDiff') && len(t:RSDiff) == 2
if a:on == 1 && rd || a:on == -1 && rd
if !exists('s:save_dex')
let s:save_dex = &diffexpr | let &diffexpr = 'spotdiff#Diffexpr()'
endif
elseif a:on == 0 && rd || a:on == -1 && !rd
if exists('s:save_dex')
let &diffexpr = s:save_dex | unlet s:save_dex
endif
endif
endfunction
function! spotdiff#Diffexpr() abort
let fn = #{0: [], 1: readfile(v:fname_in), 2: readfile(v:fname_new)}
if [fn.1, fn.2] == [['line1'], ['line2']]
let fn.0 += ['1c1']
else
for k in [1, 2]
let fn[k] = fn[k][t:RSDiff[k].sel[0] - 1 : t:RSDiff[k].sel[1] - 1]
endfor
for [p1, q1, p2, q2] in diffutil#DiffFunc(fn.1, fn.2, diffutil#DiffOpt())
let [p1, p2] += [t:RSDiff[1].sel[0], t:RSDiff[2].sel[0]]
let fn.0 += [((1 < q1) ? p1 . ',' : '') . (p1 + q1 - 1) .
\((q1 == 0) ? 'a' : (q2 == 0) ? 'd' : 'c') .
\((1 < q2) ? p2 . ',' : '') . (p2 + q2 - 1)]
endfor
endif
call writefile(fn.0, v:fname_out)
endfunction
function! s:RS_ClearDiff(key) abort
let cw = win_getid()
noautocmd call win_gotoid(str2nr(expand('<amatch>')))
call spotdiff#Diffoff(len(t:RSDiff) == 2 && &diffopt =~ 'closeoff')
noautocmd call win_gotoid(cw)
endfunction
function! s:RS_RedrawDiff(key) abort
" when text is changed, diffexpr is not called (why?) and then DiffUpdated
" is not triggered, 'diffupdte' on TextChanged/InsertLeave instead
call timer_start(0, {-> spotdiff#Diffupdate()})
endfunction
function! s:RS_ToggleEvent(on) abort
let tv = filter(map(range(1, tabpagenr('$')),
\'gettabvar(v:val, "RSDiff")'), '!empty(v:val)')
let ac = []
if !empty(tv)
for tb in tv
for k in keys(tb)
let bs = '<buffer=' . tb[k].bnr . '>'
let ac += [['WinClosed', bs, 's:RS_ClearDiff(' . k . ')']]
if len(tb) == 2
let ac += [['TextChanged,InsertLeave', bs,
\'s:RS_RedrawDiff(' . k . ')']]
endif
endfor
endfor
let ac += [['TabEnter', '*', 's:RS_ToggleDiffexpr(-1)']]
call map(ac, 'join(["autocmd", v:val[0], v:val[1], "call", v:val[2]])')
endif
let ac = ['augroup ' . s:RSD, 'autocmd!'] + ac + ['augroup END'] +
\(empty(ac) ? ['augroup! ' . s:RSD] : [])
call execute(ac)
endfunction
function! s:RS_DrawClearSel(on, key) abort
let rd = t:RSDiff[a:key]
if a:on
let hl = 'CursorColumn'
if has('signs') && empty(sign_getplaced(rd.bnr, #{group: '*'})[0].signs)
let rd.scl = getwinvar(rd.wid, '&signcolumn')
call setwinvar(rd.wid, '&signcolumn', 'no')
if empty(sign_getdefined(s:RSD))
call sign_define(s:RSD, #{linehl: hl})
endif
for ln in range(rd.sel[0], rd.sel[-1])
call sign_place(0, s:RSD, s:RSD, rd.bnr, #{lnum: ln})
endfor
elseif has('textprop')
if empty(prop_type_get(s:RSD))
call prop_type_add(s:RSD, #{highlight: hl})
endif
let rd.txp = []
for ln in range(rd.sel[0], rd.sel[-1])
let ec = has('patch-9.0.1728') ? virtcol([ln, '$'], 0, rd.wid) :
\virtcol([ln, '$'], 0)
let rd.txp += [prop_add(ln, 1, #{type: s:RSD, bufnr: rd.bnr,
\end_col: ec})]
if has('patch-9.0.0067')
let rd.txp += [prop_add(ln, 0, #{type: s:RSD, bufnr: rd.bnr,
\text: repeat(' ', &columns - ec)})]
endif
endfor
elseif has('nvim-0.7.0')
let rd.ext = #{ns: nvim_create_namespace(s:RSD), id: []}
for ln in range(rd.sel[0], rd.sel[-1])
let rd.ext.id += [nvim_buf_set_extmark(rd.bnr, rd.ext.ns, ln - 1, 0,
\#{line_hl_group: hl})]
endfor
else
let dc89 = !exists('g:loaded_diffchar') ||
\type(g:loaded_diffchar) != type(0.0) || g:loaded_diffchar >= 8.9
let rd.lid = s:Matchaddpos(hl, range(rd.sel[0], rd.sel[-1]),
\dc89 ? -10 : max(rd.sel) * -20, rd.wid)
endif
else
if has_key(rd, 'scl')
call sign_unplace(s:RSD, #{buffer: rd.bnr})
if empty(filter(range(1, bufnr('$')), 'bufnr(v:val) != -1 &&
\!empty(sign_getplaced(v:val, #{group: s:RSD})[0].signs)'))
call sign_undefine(s:RSD)
endif
call setwinvar(rd.wid, '&signcolumn', rd.scl)
unlet rd.scl
elseif has_key(rd, 'txp')
for id in rd.txp
call prop_remove(#{type: s:RSD, id: id, both: 1, bufnr: rd.bnr,
\all: 1})
endfor
if empty(filter(range(1, bufnr('$')), 'bufnr(v:val) != -1 &&
\!empty(prop_find(#{type: s:RSD, bufnr: v:val, lnum: 1}))'))
call prop_type_delete(s:RSD)
endif
unlet rd.txp
elseif has_key(rd, 'ext')
for id in rd.ext.id
call nvim_buf_del_extmark(rd.bnr, rd.ext.ns, id)
endfor
unlet rd.ext
elseif has_key(rd, 'lid')
call s:Matchdelete(rd.lid, rd.wid)
unlet rd.lid
endif
endif
endfunction
" --------------------------------------
" a visual area selectable spotdiff
" --------------------------------------
let s:VSD = 'v_spotdiff'
function! spotdiff#VDiffthis(sl, el, ll) abort
if !exists('t:VSDiff') | let t:VSDiff = {}
elseif 2 <= len(t:VSDiff)
call s:EchoWarning('2 area already selected in this tab page!')
return
endif
let cw = win_getid() | let cb = winbufnr(cw)
" get selected start and end columns per line
let vm = ([a:sl, a:el] == [line("'<"), line("'>")]) ? visualmode() : ''
let tc = 0
let se = []
for ln in filter(range(a:sl, a:el), '1 <= v:val && v:val <= line("$")')
let st = getbufline(cb, ln)[0]
if empty(st)
let [sc, ec] = [0, 0]
"elseif empty(vm) || vm ==# 'V'
elseif empty(vm)
let [sc, ec] = [1, len(st)]
else
"if vm ==# 'v'
"let [sc, ec] = [(ln == a:sl) ? col("'<") : 1,
"\(ln == a:el) ? col("'>") : len(st)]
"else
let vp = '\%' . ln . 'l\%V.*\%V.'
let so = 'cnw' . ((line('.') <= ln) ? '' : 'b')
let [sc, ec] = map(['', 'e'], 'searchpos(vp, so . v:val)[1]')
"endif
if sc != 0 && ec != 0
let ec += len(strcharpart(st[ec - 1 :], 0, 1)) - 1
endif
endif
let se += [[ln, sc, ec]]
if [sc, ec] != [0, 0] | let tc += 1 | endif
endfor
if tc == 0
call s:EchoWarning('No text exists in this area!')
return
endif
" check if the 2nd area is overwraped with the 1st one
let [k, j] = has_key(t:VSDiff, 1) ? [2, 1] : [1, 2]
if len(t:VSDiff) == 1 && t:VSDiff[j].wid == cw
let lj = map(copy(t:VSDiff[j].sel), 'v:val[0]')
for [ln, sc, ec] in se
if [sc, ec] != [0, 0]
let ix = index(lj, ln)
if ix != -1
if sc <= t:VSDiff[j].sel[ix][2] && t:VSDiff[j].sel[ix][1] <= ec
call s:EchoWarning('A part of this area already selected in this
\ window!')
return
endif
endif
endif
endfor
endif
" do diffthis
let t:VSDiff[k] = #{wid: cw, bnr: cb, sel: se, vmd: vm, lbl: a:ll}
call s:VS_DrawClearSel(1, k)
if len(t:VSDiff) == 2 | call s:VS_DoDiff() | endif
call s:VS_ToggleMap(1)
call s:VS_ToggleEvent(1)
endfunction
function! s:VS_DoDiff() abort
let op = diffutil#DiffOpt()
let iw = has('nvim') ? ['ignore_whitespace', 'ignore_whitespace_change',
\'ignore_whitespace_change_at_eol'] :
\['iwhiteall', 'iwhite', 'iwhiteeol']
let igw = 0
for ix in range(len(iw))
if has_key(op, iw[ix]) | let igw = ix + 1 | break | endif
endfor
" set regular expression to split diff unit
let du = get(t:, 'DiffUnit', get(g:, 'DiffUnit', 'Word1'))
if du == 'Char'
let sre = (igw == 1 || igw == 2) ? '\%(\s\+\|.\)\zs' : '\zs'
elseif du == 'Word2' || du ==# 'WORD'
let sre = '\%(\s\+\|\S\+\)\zs'
elseif du == 'Word3' || du ==# 'word'
let sre = '\<\|\>'
elseif du =~ '^\[.\+\]$'
let s = escape(du[1 : -2], ']^-\')
let sre = '\%([^' . s . ']\+\|[' . s . ']\)\zs'
elseif du =~ '^\([/?]\).\+\1$'
let sre = du[1 : -2]
else
let sre = (igw == 1 || igw == 2) ? '\%(\s\+\|\w\+\|\W\)\zs' :
\'\%(\w\+\|\W\)\zs'
endif
" set highlight colors for changed units
let vhl = ['DiffAdd', 'DiffChange', 'DiffDelete', 'DiffText', 'Normal',
\has('nvim') ? 'TermCursor' : has('gui_running') ? 'Cursor' : 'IncSearch']
let hcu = ['DiffText']
let dc = get(t:, 'DiffColors', get(g:, 'DiffColors', 0))
if type(dc) == type([])
let hcu += filter(copy(dc),
\'0 < hlID(v:val) && !empty(synIDattr(hlID(v:val), "bg#"))')
if 1 < len(hcu) | unlet hcu[0] | endif
elseif 1 <= dc && dc <= 3
let lv = dc - 1
let bx = []
for nm in vhl
let [fc, bc] = map(['fg#', 'bg#'],
\'s:ColorClass(synIDattr(hlID(nm), v:val), lv)')
if !empty(bc) | let bx += [bc] | endif
if nm == 'Normal' | let fn = fc | endif
endfor
let hl = {} | let id = 1
while 1
let nm = synIDattr(id, 'name')
if empty(nm) | break | endif
if id == synIDtrans(id) && empty(filter(['underline', 'undercurl',
\'strikethrough', 'reverse', 'inverse', 'standout'],
\'!empty(synIDattr(id, v:val))'))
let [fc, bc] = map(['fg#', 'bg#'],
\'s:ColorClass(synIDattr(id, v:val), lv)')
if !empty(bc) && index(bx + [!empty(fc) ? fc : fn], bc) == -1
let wt = !empty(fc) + (!empty(filter(['bold', 'italic'],
\'!empty(synIDattr(id, v:val))'))) * 2
if !has_key(hl, bc) || hl[bc][0] < wt
let hl[bc] = [wt, nm]
endif
endif
endif
let id += 1
endwhile
let hcu += map(values(hl), 'v:val[1]')
elseif dc == 100
let bx = map(vhl, 'synIDattr(hlID(v:val), "bg#")')
let hl = {} | let id = 1
while 1
let nm = synIDattr(id, 'name')
if empty(nm) | break | endif
if id == synIDtrans(id)
let bg = synIDattr(id, 'bg#')
if !empty(bg) && index(bx, bg) == -1
let hl[reltimestr(reltime())[-2 :] . id] = nm
let bx += [bg]
endif
endif
let id += 1
endwhile
let hcu += values(hl)
elseif -3 <= dc && dc <= -1
let hcu += ['SpecialKey', 'Search', 'CursorLineNr',
\'Visual', 'WarningMsg', 'StatusLineNC', 'MoreMsg',
\'ErrorMsg', 'LineNr', 'Conceal', 'NonText',
\'ColorColumn', 'ModeMsg', 'PmenuSel', 'Title']
\[: ((dc == -1) ? 2 : (dc == -2) ? 6 : -1)]
endif
" compare combined line or line-by-line
let lm = (t:VSDiff[1].lbl && t:VSDiff[2].lbl) ?
\min([t:VSDiff[1].sel[-1][0] - t:VSDiff[1].sel[0][0] + 1,
\t:VSDiff[2].sel[-1][0] - t:VSDiff[2].sel[0][0] + 1]) : 1
let hp = #{1: {}, 2: {}}
for k in [1, 2] | let t:VSDiff[k].pos = [] | endfor
for ic in range(lm)
let lct = #{1: [], 2: []}
for k in [1, 2]
let lb = t:VSDiff[k].lbl ? '' : nr2char(0xff)
" split line and set its position
for [ln, sc, ec] in (t:VSDiff[k].lbl) ? [t:VSDiff[k].sel[ic]] :
\t:VSDiff[k].sel
let st = getbufline(t:VSDiff[k].bnr, ln)[0][sc - 1 : ec - 1]
if empty(st)
let lct[k] += [[[ln, 0, 0], '']]
else
for tx in split(st, sre)
let tl = len(tx)
let lct[k] += [[[ln, sc, tl], tx]]
let sc += tl
endfor
endif
" insert a linebreak between actual lines
if !empty(lb) && ln < t:VSDiff[k].sel[-1][0]
let lct[k] += [[[ln, sc, 1], lb]]
endif
endfor
" delete linebreak if prev/next is splitable, or change to space
if !empty(lb)
for ix in filter(range(len(lct[k]) - 1, 0, -1),
\'lct[k][v:val][1] == lb')
let [pt, nt] = [lct[k][ix - 1][1], lct[k][ix + 1][1]]
if empty(pt) || empty(nt) || 1 < len(split(pt . nt, sre))
unlet lct[k][ix]
else
let lct[k][ix][1] = ' '
endif
endfor
endif
" adjust spaces based on iwhite
if igw != 0
for ix in range(len(lct[k]) - 1, 0, -1)
if lct[k][ix][1] =~ '^\s\+$'
unlet lct[k][ix]
else
if igw != 1 | break | endif
endif
endfor
endif
if igw == 2
for ix in range(len(lct[k]))
let lct[k][ix][1] = substitute(lct[k][ix][1], '\s\+', ' ', 'g')
endfor
endif
endfor
" compare both diff units
let cn = 0
for pq in diffutil#DiffFunc(map(copy(lct[1]), 'v:val[1]'),
\map(copy(lct[2]), 'v:val[1]'), op)
let [p, q] = [#{1: pq[0], 2: pq[2]}, #{1: pq[1], 2: pq[3]}]
if 0 < q.1 && 0 < q.2
let hl = hcu[cn % len(hcu)] | let cn += 1
else
let hl = 'DiffAdd'
endif
let h = #{1: hl, 2: hl}
for k in [1, 2]
let mx = []
if 0 < q[k] " add or change
for ix in range(p[k], p[k] + q[k] - 1)
let mx += [lct[k][ix][0]]
endfor
else " delete
let h[k] = 'vsDiffChangeBU'
if 0 < p[k]
let po = lct[k][p[k] - 1][0]
let bl = len(matchstr(lct[k][p[k] - 1][1], '.$'))
let mx += [[po[0], po[1] + po[2] - bl, bl]]
endif
if p[k] < len(lct[k])
let po = lct[k][p[k]][0]
let bl = len(matchstr(lct[k][p[k]][1], '^.'))
let mx += [[po[0], po[1], bl]]
endif
endif
" join continueous positions per line and then per hl
let lc = {}
for [ln, sc, nc] in mx
if !has_key(lc, ln)
let lc[ln] = [sc, nc]
else
let lc[ln][1] = sc + nc - lc[ln][0]
endif
endfor
let lx = map(items(lc), '[eval(v:val[0])] + v:val[1]')
if !has_key(hp[k], h[k]) | let hp[k][h[k]] = [] | endif
let hp[k][h[k]] += lx
" set highlighted positions to show diff pair
if 1 < len(lx) | call sort(lx, {i, j -> i[0] - j[0]}) | endif
let t:VSDiff[k].pos += [lx]
endfor
endfor
endfor
" draw diff highlights
for k in [1, 2]
let t:VSDiff[k].uid = []
for [hl, po] in items(hp[k])
let t:VSDiff[k].uid += s:Matchaddpos(hl, po, -3, t:VSDiff[k].wid)
endfor
if t:VSDiff[k].lbl
" strike uncompared extra lines for line-by-line
let el = map(map(range(lm, len(t:VSDiff[k].sel) - 1, 1),
\'t:VSDiff[k].sel[v:val]'),
\'[v:val[0], v:val[1], v:val[2] - v:val[1] + 1]')
if !empty(el)
let t:VSDiff[k].uid += s:Matchaddpos('vsDiffChangeS', el, -3,
\t:VSDiff[k].wid)
endif
endif
endfor
endfunction
function! spotdiff#VDiffoff(all) abort
if !exists('t:VSDiff') | return | endif
let sk = keys(t:VSDiff)
if !a:all
call filter(sk, 't:VSDiff[v:val].wid == win_getid()')
if len(sk) == 2
" select k in which the cursor is if both are in same window
let [cl, cc] = [line('.'), col('.')]
for k in sk
if !empty(filter(copy(t:VSDiff[k].sel), 'v:val[0] == cl &&
\v:val[1] <= cc && cc <= v:val[2]'))
let sk = [k]
break
endif
endfor
endif
endif
if empty(sk) | return | endif
call s:VS_ToggleMap(0)
for k in sk
call s:VS_DrawClearSel(0, k)
for id in ['uid', 'pid']
if has_key(t:VSDiff[k], id)
call s:Matchdelete(t:VSDiff[k][id], t:VSDiff[k].wid)
endif
endfor
unlet t:VSDiff[k]
endfor
if len(t:VSDiff) == 1
" resume back to the initial state
let k = has_key(t:VSDiff, 1) ? 1 : 2
for id in ['uid', 'pid']
if has_key(t:VSDiff[k], id)
call s:Matchdelete(t:VSDiff[k][id], t:VSDiff[k].wid)
unlet t:VSDiff[k][id]
endif
endfor
for id in ['pos', 'pvn']
if has_key(t:VSDiff[k], id) | unlet t:VSDiff[k][id] | endif
endfor
elseif len(t:VSDiff) == 0
unlet t:VSDiff
endif
call s:VS_ToggleEvent(0)
endfunction
function! spotdiff#VDiffupdate() abort
if !exists('t:VSDiff') || len(t:VSDiff) != 2 | return | endif
let vd = copy(t:VSDiff)
call spotdiff#VDiffoff(1)
let cw = win_getid()
for k in [1, 2]
noautocmd call win_gotoid(vd[k].wid)
let [sl, sc] = [vd[k].sel[0][0], vd[k].sel[0][1]]
let [el, ec] = [vd[k].sel[-1][0], vd[k].sel[-1][2]]
if !empty(vd[k].vmd)
call execute('normal ' . vd[k].vmd . "\<Esc>")
call setpos("'<", [0, sl, sc, 0])
call setpos("'>", [0, el, ec, 0])
endif
call spotdiff#VDiffthis(sl, el, vd[k].lbl)
endfor
noautocmd call win_gotoid(cw)
endfunction
function! spotdiff#VDiffOpFunc(vm, lbl) abort
call execute('normal ' . ((a:vm == 'char') ? 'v' : (a:vm == 'line') ? 'V' :
\"\<C-V>") . "\<Esc>")
call setpos("'<", getpos("'["))
call setpos("'>", getpos("']"))
call spotdiff#VDiffthis(line("'<"), line("'>"), a:lbl)
endfunction
function! s:VS_ClearDiff() abort
let ew = eval(expand('<amatch>'))
let tn = win_id2tabwin(ew)[0]
if 0 < tn
let vs = gettabvar(tn, 'VSDiff', {})
let kn = filter([1, 2], 'has_key(vs, v:val) && vs[v:val].wid == ew')
if 0 < len(kn)
let cw = win_getid()
noautocmd call win_gotoid(ew)
call spotdiff#VDiffoff(len(kn) == 2)
noautocmd call win_gotoid(cw)
endif
endif
endfunction
function! s:VS_RedrawDiff() abort
call spotdiff#VDiffupdate()
endfunction
let s:vsmap = map({'[b': ['JumpDiffCharPrevStart', 'VS_JumpDiff(0)'],
\']b': ['JumpDiffCharNextStart', 'VS_JumpDiff(1)'],
\'[e': ['JumpDiffCharPrevEnd', 'VS_JumpDiff(2)'],
\']e': ['JumpDiffCharNextEnd', 'VS_JumpDiff(3)']},
\'["<Plug>" . v:val[0], ":<C-U>call <SID>" . v:val[1] . "<CR>"]')
if exists('g:loaded_diffchar')
for s:key in keys(s:vsmap)
let [s:plg, s:cmd] = s:vsmap[s:key]
let s:vsmap[s:plg] = [maparg(s:plg, 'n'), s:cmd]
unlet s:vsmap[s:key]
endfor
function! s:VS_ToggleMap(on) abort
let vd = exists('t:VSDiff') && len(t:VSDiff) == 2
let rn = (a:on == 0 && vd || a:on == -1 && !vd) ? 0 :
\(a:on == 1 && vd || a:on == -1 && vd) ? 1 : -1
if rn != -1
call execute(map(items(s:vsmap),
\'"nnoremap <silent> " . v:val[0] . " " . v:val[1][rn]'))
endif
endfunction
else
for s:key in keys(s:vsmap)
let [s:plg, s:cmd] = s:vsmap[s:key]
if !hasmapto(s:plg, 'n') && maparg(s:key, 'n') =~ '^$\|_defaults.lua'
if get(g:, 'DiffCharDoMapping', 1) && get(g:, 'VDiffDoMapping', 1)
call execute('nmap <silent> ' . s:key . ' ' . s:plg)
endif
endif
call execute('nnoremap <silent> ' . s:plg . ' ' . s:cmd)
endfor
unlet s:vsmap
function! s:VS_ToggleMap(on) abort
endfunction
endif
function! s:VS_JumpDiff(dp) abort
" a:dp : 0=backward/start, 1=forward/start, 2=backward/end, 3=forward/end
if !exists('t:VSDiff') || len(t:VSDiff) != 2 | return | endif
let sk = filter(#{1: [], 2: []}, 't:VSDiff[v:key].wid == win_getid()')
if empty(sk) | return | endif
let [dir, pos] = (a:dp == 0) ? [0, 0] : (a:dp == 1) ? [1, 0] :
\(a:dp == 2) ? [0, 1] : [1, 1]
let [cl, cc] = [line('.'), col('.')]
if cc == col('$') " empty line
if !dir | let cc = 0 | endif
else
if pos
let cc += len(strcharpart(getline(cl)[cc - 1 :], 0, 1)) - 1
endif
endif
for k in keys(sk)
for ix in dir ? range(len(t:VSDiff[k].sel)) :
\range(len(t:VSDiff[k].sel) - 1, 0, -1)
let sl = t:VSDiff[k].sel[ix]
if dir ? (cl < sl[0] || cl == sl[0] && cc <= sl[2]) :
\(cl > sl[0] || cl == sl[0] && cc >= sl[1])
let sk[k] = sl
break
endif
endfor
if empty(sk[k]) | unlet sk[k] | endif
endfor
for k in (len(keys(sk)) < 2) ? keys(sk) :
\(dir ? (sk.1[0] < sk.2[0] || sk.1[0] == sk.2[0] && sk.1[1] < sk.2[1]) :
\(sk.1[0] > sk.2[0] || sk.1[0] == sk.2[0] && sk.1[1] > sk.2[1])) ?
\[1, 2] : [2, 1]
for pn in dir ? (range(has_key(t:VSDiff[k], 'pvn') ?
\t:VSDiff[k].pvn + (pos ? 0 : 1) : 0, len(t:VSDiff[k].pos) - 1, 1)) :
\(range(has_key(t:VSDiff[k], 'pvn') ?
\t:VSDiff[k].pvn + (pos ? -1 : 0) : len(t:VSDiff[k].pos) - 1, 0, -1))
let ps = t:VSDiff[k].pos[pn][pos ? -1 : 0]
let [nl, nc] = [ps[0], pos ? ps[1] + ps[2] - 1 : ps[1]]
let nc = min([nc, col([nl, '$']) - 1])
if dir ? (cl < nl || cl == nl && cc < nc) :
\(cl > nl || cl == nl && cc > nc)
call cursor(nl, nc)
return
endif
endfor
endfor
endfunction
function! s:VS_DiffPair(event) abort
" a:event : 0 = WinLeave, 1 = CursorMoved
if !exists('t:VSDiff') || len(t:VSDiff) != 2 | return | endif
let [cl, cc] = [line('.'), col('.')]
for ak in filter([1, 2], 't:VSDiff[v:val].wid == win_getid()')
let bk = (ak == 1) ? 2 : 1
if has_key(t:VSDiff[ak], 'pvn')
if a:event
for ps in t:VSDiff[ak].pos[t:VSDiff[ak].pvn]
if cl == ps[0] && ps[1] <= cc && cc <= ps[1] + ps[2] - 1
return
endif
endfor
endif
unlet t:VSDiff[ak].pvn
call s:Matchdelete(t:VSDiff[bk].pid, t:VSDiff[bk].wid)
unlet t:VSDiff[bk].pid
endif
if a:event
if t:VSDiff[ak].sel[0][0] <= cl && cl <= t:VSDiff[ak].sel[-1][0]
let pn = len(t:VSDiff[ak].pos) - 1
while 0 <= pn
for ps in t:VSDiff[ak].pos[pn]
if cl == ps[0] && ps[1] <= cc && cc <= ps[1] + ps[2] - 1
let t:VSDiff[ak].pvn = pn
let t:VSDiff[bk].pid = s:Matchaddpos(has('nvim') ?
\'TermCursor' : has('gui_running') ? 'Cursor' : 'IncSearch',
\t:VSDiff[bk].pos[pn], -1, t:VSDiff[bk].wid)
let pn = 0
break
endif
endfor
let pn -= 1
endwhile
endif
endif
endfor
endfunction
function! s:VS_ToggleEvent(on) abort
let tv = filter(map(range(1, tabpagenr('$')),
\'gettabvar(v:val, "VSDiff")'), '!empty(v:val)')
let ac = []
if !empty(tv)
for tb in tv
let bn = 0
for k in keys(tb)
if bn != tb[k].bnr
let bn = tb[k].bnr
let bs = '<buffer=' . bn . '>'
let ac += [['WinClosed', bs, 's:VS_ClearDiff()']]
if len(tb) == 2
let ac += [['TextChanged,InsertLeave', bs, 's:VS_RedrawDiff()']]
if get(t:, 'DiffPairVisible', get(g:, 'DiffPairVisible', 1))
let ac += [['CursorMoved', bs, 's:VS_DiffPair(1)']]
let ac += [['WinLeave', bs, 's:VS_DiffPair(0)']]
endif
endif
endif
endfor
endfor
let ac += [['ColorScheme', '*', 's:VS_ToggleHL(1)']]
let ac += [['TabEnter', '*', 's:VS_ToggleMap(-1)']]
call map(ac, 'join(["autocmd", v:val[0], v:val[1], "call", v:val[2]])')
endif
let ac = ['augroup ' . s:VSD, 'autocmd!'] + ac + ['augroup END'] +
\(empty(ac) ? ['augroup! ' . s:VSD] : [])
call execute(ac)
endfunction
function! s:VS_DrawClearSel(on, key) abort
let tv = filter(map(range(1, tabpagenr('$')),
\'gettabvar(v:val, "VSDiff")'), '!empty(v:val)')
if len(tv) == 1 && len(tv[0]) == 1 | call s:VS_ToggleHL(a:on) | endif
if a:on
let t:VSDiff[a:key].lid =
\s:Matchaddpos(t:VSDiff[a:key].lbl ? 'DiffChange' : 'vsDiffChangeI',
\map(filter(copy(t:VSDiff[a:key].sel), 'v:val[1] != 0'),
\'[v:val[0], v:val[1], v:val[2] - v:val[1] + 1]'),
\-5, t:VSDiff[a:key].wid)
else
if has_key(t:VSDiff[a:key], 'lid')
call s:Matchdelete(t:VSDiff[a:key].lid, t:VSDiff[a:key].wid)
unlet t:VSDiff[a:key].lid
endif
endif
endfunction
function! s:VS_ToggleHL(on) abort
for [fh, th, ta] in [
\['DiffChange', 'vsDiffChangeBU', ['bold', 'underline']],
\['DiffChange', 'vsDiffChangeI', ['italic']],
\['DiffChange', 'vsDiffChangeS', ['strikethrough']]]
call execute('highlight clear ' . th)
if a:on
let at = {}
let id = synIDtrans(hlID(fh))
for hm in ['cterm', 'gui']
for hc in ['fg', 'bg']
let at[hm . hc] = synIDattr(id, hc, hm)
endfor
let at[hm] = join(filter(['bold', 'underline', 'undercurl',
\'strikethrough', 'reverse', 'inverse', 'italic', 'standout'],
\'!empty(synIDattr(id, v:val))') + ta, ',')
endfor
call map(at, '!empty(v:val) ? v:val : "NONE"')
call execute('highlight ' . th . ' ' .
\join(map(items(at), 'join(v:val, "=")')))
endif
endfor
endfunction
function! s:ColorClass(cn, lv) abort
if empty(a:cn) | return a:cn | endif
if a:cn[0] != '#'
let cn = a:cn % 256
if cn < 16
let cv = [[0, 0, 0], [128, 0, 0], [0, 128, 0], [128, 128, 0],
\[0, 0, 128], [128, 0, 128], [0, 128, 128], [192, 192, 192],
\[128, 128, 128], [255, 0, 0], [0, 255, 0], [255, 255, 0],
\[0, 0, 255], [255, 0, 255], [0, 255, 255], [255, 255, 255]]
if &t_Co < 256
let [cv[9], cv[12], cv[11], cv[14]] = [cv[12], cv[9], cv[14], cv[11]]
endif
let rgb = cv[cn]
elseif cn < 232
let cv = [0, 95, 135, 175, 215, 255]
let cn -= 16
let rgb = [cv[(cn / 36) % 6], cv[(cn / 6) % 6], cv[cn % 6]]
else
let cn = 10 * (cn - 232) + 8
let rgb = [cn, cn, cn]
endif
else
let rgb = map(split(a:cn[1:], '..\zs'), 'str2nr(v:val, 16)')
endif
let cl = [[0, 0, 0, 0, 1, 1, 1, 1], [0, 0, 0, 0, 1, 1, 2, 2],
\[0, 1, 2, 3, 4, 5, 6, 7]][a:lv]
call map(rgb, 'v:val / 32')
if max(rgb) == min(rgb)
return '99' . cl[(rgb[0] + rgb[1] + rgb[2]) / 3]
else
return join(map(rgb, 'cl[v:val]'), '')
endif
endfunction
" --------------------------------------
" common
" --------------------------------------
function! s:Matchaddpos(grp, pos, pri, wid) abort
return map(range(0, len(a:pos) - 1, 8), 'matchaddpos(a:grp,
\a:pos[v:val : v:val + 7], a:pri, -1, #{window: a:wid})')
endfunction
function! s:Matchdelete(id, wid) abort
let gm = map(getmatches(a:wid), 'v:val.id')
for id in a:id
if index(gm, id) != -1 | call matchdelete(id, a:wid) | endif
endfor
endfunction
function! s:EchoWarning(msg) abort
call execute(['echohl WarningMsg', 'echo a:msg', 'echohl None'], '')
endfunction
let &cpoptions = s:save_cpo
unlet s:save_cpo
" vim: ts=2 sw=0 sts=-1 et