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|
--
-- vis-commentary
--
local comment_string = {
actionscript = '//',
ada = '--',
ansi_c = '/*|*/',
antlr = '//',
apdl = '!',
apl = '#',
applescript = '--',
asp = '\'',
autoit = ';',
awk = '#',
b_lang = '//',
bash = '#',
batch = ':',
bibtex = '%',
boo = '#',
chuck = '//',
cmake = '#',
coffeescript = '#',
context = '%',
cpp = '//',
crystal = '#',
csharp = '//',
css = '/*|*/',
cuda = '//',
dart = '//',
desktop = '#',
django = '{#|#}',
dmd = '//',
dockerfile = '#',
dot = '//',
eiffel = '--',
elixir = '#',
erlang = '%',
faust = '//',
fennel = ';;',
fish = '#',
forth = '|\\',
fortran = '!',
fsharp = '//',
gap = '#',
gettext = '#',
gherkin = '#',
glsl = '//',
gnuplot = '#',
go = '//',
groovy = '//',
gtkrc = '#',
haskell = '--',
html = '<!--|-->',
icon = '#',
idl = '//',
inform = '!',
ini = '#',
Io = '#',
java = '//',
javascript = '//',
json = '/*|*/',
jsp = '//',
latex = '%',
ledger = '#',
less = '//',
lilypond = '%',
lisp = ';',
logtalk = '%',
lua = '--',
makefile = '#',
markdown = '<!--|-->',
matlab = '#',
moonscript = '--',
myrddin = '//',
nemerle = '//',
nsis = '#',
objective_c = '//',
pascal = '//',
perl = '#',
php = '//',
pico8 = '//',
pike = '//',
pkgbuild = '#',
prolog = '%',
props = '#',
protobuf = '//',
ps = '%',
pure = '//',
python = '#',
rails = '#',
rc = '#',
rebol = ';',
rest = '.. ',
rexx = '--',
rhtml = '<!--|-->',
rstats = '#',
ruby = '#',
rust = '//',
sass = '//',
scala = '//',
scheme = ';',
smalltalk = '"|"',
sml = '(*)',
snobol4 = '#',
sql = '#',
tcl = '#',
tex = '%',
text = '',
toml = '#',
vala = '//',
vb = '\'',
vbscript = '\'',
verilog = '//',
vhdl = '--',
wsf = '<!--|-->',
xml = '<!--|-->',
yaml = '#',
zig = '//',
nim = '#',
julia = '#',
rpmspec = '#'
}
-- escape all magic characters with a '%'
local function esc(str)
if not str then return "" end
return (str:gsub('%%', '%%%%'):gsub('^%^', '%%^'):gsub('%$$', '%%$'):gsub(
'%(', '%%('):gsub('%)', '%%)'):gsub('%.', '%%.')
:gsub('%[', '%%['):gsub('%]', '%%]'):gsub('%*', '%%*')
:gsub('%+', '%%+'):gsub('%-', '%%-'):gsub('%?', '%%?'))
end
-- escape '%'
local function pesc(str)
if not str then return "" end
return str:gsub('%%', '%%%%')
end
local function rtrim(s)
local n = #s
while n > 0 and s:find("^%s", n) do n = n - 1 end
return s:sub(1, n)
end
local function comment_line(lines, lnum, prefix, suffix)
if suffix ~= "" then suffix = " " .. suffix end
lines[lnum] = string.gsub(lines[lnum], "(%s*)(.*)",
"%1" .. pesc(prefix) .. " %2" .. pesc(suffix))
end
local function uncomment_line(lines, lnum, prefix, suffix)
local match_str = "^(%s*)" .. esc(prefix) .. "%s?(.*)" .. esc(suffix)
local m = table.pack(lines[lnum]:match(match_str))
lines[lnum] = m[1] .. rtrim(m[2])
end
local function is_comment(line, prefix)
return (line:match("^%s*(.+)"):sub(0, #prefix) == prefix)
end
local function toggle_line_comment(lines, lnum, prefix, suffix)
if not lines or not lines[lnum] then return end
if not lines[lnum]:match("^%s*(.+)") then return end -- ignore empty lines
if is_comment(lines[lnum], prefix) then
uncomment_line(lines, lnum, prefix, suffix)
else
comment_line(lines, lnum, prefix, suffix)
end
end
-- if one line inside the block is not a comment, comment the block.
-- only uncomment, if every single line is comment.
local function block_comment(lines, a, b, prefix, suffix)
local uncomment = true
for i = a, b do
if lines[i]:match("^%s*(.+)") and not is_comment(lines[i], prefix) then
uncomment = false
end
end
if uncomment then
for i = a, b do
if lines[i]:match("^%s*(.+)") then
uncomment_line(lines, i, prefix, suffix)
end
end
else
for i = a, b do
if lines[i]:match("^%s*(.+)") then
comment_line(lines, i, prefix, suffix)
end
end
end
end
vis:map(vis.modes.NORMAL, "gcc", function()
local win = vis.win
local lines = win.file.lines
local comment = comment_string[win.syntax]
if not comment then return end
local prefix, suffix = comment:match('^([^|]+)|?([^|]*)$')
if not prefix then return end
for sel in win:selections_iterator() do
local lnum = sel.line
local col = sel.col
toggle_line_comment(lines, lnum, prefix, suffix)
sel:to(lnum, col) -- restore cursor position
end
win:draw()
end, "Toggle comment on a the current line")
local function visual_f(i)
return function()
local win = vis.win
local lines = win.file.lines
local comment = comment_string[win.syntax]
if not comment then return end
local prefix, suffix = comment:match('^([^|]+)|?([^|]*)$')
if not prefix then return end
for sel in win:selections_iterator() do
local r = sel.range
local lnum = sel.line -- line number of cursor
local col = sel.col -- column of cursor
if sel.anchored and r then
sel.pos = r.start
local a = sel.line
sel.pos = r.finish
local b = sel.line - i
block_comment(lines, a, b, prefix, suffix)
sel:to(lnum, col) -- restore cursor position
end
end
win:draw()
vis.mode = vis.modes.NORMAL -- go to normal mode
end
end
vis:map(vis.modes.VISUAL_LINE, "gc", visual_f(1),
"Toggle comment on the selected lines")
vis:map(vis.modes.VISUAL, "gc", visual_f(0),
"Toggle comment on the selected lines")
|
