mpv/player/lua/console.lua

1204 lines
40 KiB
Lua

-- Copyright (C) 2019 the mpv developers
--
-- Permission to use, copy, modify, and/or distribute this software for any
-- purpose with or without fee is hereby granted, provided that the above
-- copyright notice and this permission notice appear in all copies.
--
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
-- SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
-- OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
local utils = require 'mp.utils'
local assdraw = require 'mp.assdraw'
-- Default options
local opts = {
-- All drawing is scaled by this value, including the text borders and the
-- cursor. Change it if you have a high-DPI display.
scale = 1,
-- Set the font used for the REPL and the console.
-- This has to be a monospaced font.
font = "",
-- Set the font size used for the REPL and the console. This will be
-- multiplied by "scale".
font_size = 16,
border_size = 1,
-- Remove duplicate entries in history as to only keep the latest one.
history_dedup = true,
-- The ratio of font height to font width.
-- Adjusts table width of completion suggestions.
font_hw_ratio = 2.0,
}
function detect_platform()
local platform = mp.get_property_native('platform')
if platform == 'darwin' or platform == 'windows' then
return platform
elseif os.getenv('WAYLAND_DISPLAY') then
return 'wayland'
end
return 'x11'
end
-- Pick a better default font for Windows and macOS
local platform = detect_platform()
if platform == 'windows' then
opts.font = 'Consolas'
elseif platform == 'darwin' then
opts.font = 'Menlo'
else
opts.font = 'monospace'
end
-- Apply user-set options
require 'mp.options'.read_options(opts)
local styles = {
-- Colors are stolen from base16 Eighties by Chris Kempson
-- and converted to BGR as is required by ASS.
-- 2d2d2d 393939 515151 697374
-- 939fa0 c8d0d3 dfe6e8 ecf0f2
-- 7a77f2 5791f9 66ccff 99cc99
-- cccc66 cc9966 cc99cc 537bd2
debug = '{\\1c&Ha09f93&}',
verbose = '{\\1c&H99cc99&}',
warn = '{\\1c&H66ccff&}',
error = '{\\1c&H7a77f2&}',
fatal = '{\\1c&H5791f9&\\b1}',
suggestion = '{\\1c&Hcc99cc&}',
}
local repl_active = false
local insert_mode = false
local pending_update = false
local line = ''
local cursor = 1
local history = {}
local history_pos = 1
local log_buffer = {}
local suggestion_buffer = {}
local key_bindings = {}
local global_margins = { t = 0, b = 0 }
local file_commands = {}
local path_separator = platform == 'windows' and '\\' or '/'
local update_timer = nil
update_timer = mp.add_periodic_timer(0.05, function()
if pending_update then
update()
else
update_timer:kill()
end
end)
update_timer:kill()
mp.observe_property("user-data/osc/margins", "native", function(_, val)
if val then
global_margins = val
else
global_margins = { t = 0, b = 0 }
end
update()
end)
-- Add a line to the log buffer (which is limited to 100 lines)
function log_add(style, text)
log_buffer[#log_buffer + 1] = { style = style, text = text }
if #log_buffer > 100 then
table.remove(log_buffer, 1)
end
if repl_active then
if not update_timer:is_enabled() then
update()
update_timer:resume()
else
pending_update = true
end
end
end
-- Escape a string for verbatim display on the OSD
function ass_escape(str)
-- There is no escape for '\' in ASS (I think?) but '\' is used verbatim if
-- it isn't followed by a recognised character, so add a zero-width
-- non-breaking space
str = str:gsub('\\', '\\\239\187\191')
str = str:gsub('{', '\\{')
str = str:gsub('}', '\\}')
-- Precede newlines with a ZWNBSP to prevent ASS's weird collapsing of
-- consecutive newlines
str = str:gsub('\n', '\239\187\191\\N')
-- Turn leading spaces into hard spaces to prevent ASS from stripping them
str = str:gsub('\\N ', '\\N\\h')
str = str:gsub('^ ', '\\h')
return str
end
-- Takes a list of strings, a max width in characters and
-- optionally a max row count.
-- The result contains at least one column.
-- Rows are cut off from the top if rows_max is specified.
-- returns a string containing the formatted table and the row count
function format_table(list, width_max, rows_max)
if #list == 0 then
return '', 0
end
local spaces_min = 2
local spaces_max = 8
local list_size = #list
local column_count = 1
local row_count = list_size
local column_widths
-- total width without spacing
local width_total = 0
local list_widths = {}
for i, item in ipairs(list) do
list_widths[i] = len_utf8(item)
end
-- use as many columns as possible
for columns = 2, list_size do
local rows_lower_bound = math.min(rows_max, math.ceil(list_size / columns))
local rows_upper_bound = math.min(rows_max, list_size, math.ceil(list_size / (columns - 1) - 1))
for rows = rows_upper_bound, rows_lower_bound, -1 do
cw = {}
width_total = 0
-- find out width of each column
for column = 1, columns do
local width = 0
for row = 1, rows do
local i = row + (column - 1) * rows
local item_width = list_widths[i]
if not item_width then break end
if width < item_width then
width = item_width
end
end
cw[column] = width
width_total = width_total + width
if width_total + (columns - 1) * spaces_min > width_max then
break
end
end
if width_total + (columns - 1) * spaces_min <= width_max then
row_count = rows
column_count = columns
column_widths = cw
else
break
end
end
if width_total + (columns - 1) * spaces_min > width_max then
break
end
end
local spaces = math.floor((width_max - width_total) / (column_count - 1))
spaces = math.max(spaces_min, math.min(spaces_max, spaces))
local spacing = column_count > 1 and string.format('%' .. spaces .. 's', ' ') or ''
local rows = {}
for row = 1, row_count do
local columns = {}
for column = 1, column_count do
local i = row + (column - 1) * row_count
if i > #list then break end
local format_string = column == column_count and '%s'
or '%-' .. column_widths[column] .. 's'
columns[column] = string.format(format_string, list[i])
end
-- first row is at the bottom
rows[row_count - row + 1] = table.concat(columns, spacing)
end
return table.concat(rows, '\n'), row_count
end
local function print_to_terminal()
-- Clear the log after closing the console.
if not repl_active then
mp.osd_message('')
return
end
local log = ''
for _, log_line in ipairs(log_buffer) do
log = log .. log_line.text
end
local suggestions = table.concat(suggestion_buffer, '\t')
if suggestions ~= '' then
suggestions = suggestions .. '\n'
end
local before_cur = line:sub(1, cursor - 1)
local after_cur = line:sub(cursor)
-- Ensure there is a character with inverted colors to print.
if after_cur == '' then
after_cur = ' '
end
mp.osd_message(log .. suggestions .. '> ' .. before_cur .. '\027[7m' ..
after_cur:sub(1, 1) .. '\027[0m' .. after_cur:sub(2), 999)
end
-- Render the REPL and console as an ASS OSD
function update()
pending_update = false
-- Print to the terminal when there is no VO. Check both vo-configured so
-- it works with --force-window --idle and no video tracks, and whether
-- there is a video track so that the condition doesn't become true while
-- switching VO at runtime, making mp.osd_message() print to the VO's OSD.
-- This issue does not happen when switching VO without any video track
-- regardless of the condition used.
if not mp.get_property_native('vo-configured')
and not mp.get_property('current-tracks/video') then
print_to_terminal()
return
end
local dpi_scale = mp.get_property_native("display-hidpi-scale", 1.0)
dpi_scale = dpi_scale * opts.scale
local screenx, screeny, aspect = mp.get_osd_size()
screenx = screenx / dpi_scale
screeny = screeny / dpi_scale
-- Clear the OSD if the REPL is not active
if not repl_active then
mp.set_osd_ass(screenx, screeny, '')
return
end
local coordinate_top = math.floor(global_margins.t * screeny + 0.5)
local clipping_coordinates = '0,' .. coordinate_top .. ',' ..
screenx .. ',' .. screeny
local ass = assdraw.ass_new()
local has_shadow = mp.get_property('osd-back-color'):sub(2, 3) == '00'
local style = '{\\r' ..
'\\1a&H00&\\3a&H00&\\1c&Heeeeee&\\3c&H111111&' ..
(has_shadow and '\\4a&H99&\\4c&H000000&' or '') ..
'\\fn' .. opts.font .. '\\fs' .. opts.font_size ..
'\\bord' .. opts.border_size .. '\\xshad0\\yshad1\\fsp0\\q1' ..
'\\clip(' .. clipping_coordinates .. ')}'
-- Create the cursor glyph as an ASS drawing. ASS will draw the cursor
-- inline with the surrounding text, but it sets the advance to the width
-- of the drawing. So the cursor doesn't affect layout too much, make it as
-- thin as possible and make it appear to be 1px wide by giving it 0.5px
-- horizontal borders.
local cheight = opts.font_size * 8
local cglyph = '{\\r' ..
'\\1a&H44&\\3a&H44&\\4a&H99&' ..
'\\1c&Heeeeee&\\3c&Heeeeee&\\4c&H000000&' ..
'\\xbord0.5\\ybord0\\xshad0\\yshad1\\p4\\pbo24}' ..
'm 0 0 l 1 0 l 1 ' .. cheight .. ' l 0 ' .. cheight ..
'{\\p0}'
local before_cur = ass_escape(line:sub(1, cursor - 1))
local after_cur = ass_escape(line:sub(cursor))
-- Render log messages as ASS.
-- This will render at most screeny / font_size - 1 messages.
-- lines above the prompt
-- subtract 1.5 to account for the input line
local screeny_factor = (1 - global_margins.t - global_margins.b)
local lines_max = math.ceil(screeny * screeny_factor / opts.font_size - 1.5)
-- Estimate how many characters fit in one line
local width_max = math.ceil(screenx / opts.font_size * opts.font_hw_ratio)
local suggestions, rows = format_table(suggestion_buffer, width_max, lines_max)
local suggestion_ass = style .. styles.suggestion .. ass_escape(suggestions)
local log_ass = ''
local log_messages = #log_buffer
local log_max_lines = math.max(0, lines_max - rows)
if log_max_lines < log_messages then
log_messages = log_max_lines
end
for i = #log_buffer - log_messages + 1, #log_buffer do
log_ass = log_ass .. style .. log_buffer[i].style .. ass_escape(log_buffer[i].text)
end
ass:new_event()
ass:an(1)
ass:pos(2, screeny - 2 - global_margins.b * screeny)
ass:append(log_ass .. '\\N')
if #suggestions > 0 then
ass:append(suggestion_ass .. '\\N')
end
ass:append(style .. '> ' .. before_cur)
ass:append(cglyph)
ass:append(style .. after_cur)
-- Redraw the cursor with the REPL text invisible. This will make the
-- cursor appear in front of the text.
ass:new_event()
ass:an(1)
ass:pos(2, screeny - 2 - global_margins.b * screeny)
ass:append(style .. '{\\alpha&HFF&}> ' .. before_cur)
ass:append(cglyph)
ass:append(style .. '{\\alpha&HFF&}' .. after_cur)
mp.set_osd_ass(screenx, screeny, ass.text)
end
-- Set the REPL visibility ("enable", Esc)
function set_active(active)
if active == repl_active then return end
if active then
repl_active = true
insert_mode = false
mp.enable_key_bindings('console-input', 'allow-hide-cursor+allow-vo-dragging')
mp.enable_messages('terminal-default')
define_key_bindings()
else
repl_active = false
undefine_key_bindings()
mp.enable_messages('silent:terminal-default')
collectgarbage()
end
update()
end
-- Show the repl if hidden and replace its contents with 'text'
-- (script-message-to repl type)
function show_and_type(text, cursor_pos)
text = text or ''
cursor_pos = tonumber(cursor_pos)
-- Save the line currently being edited, just in case
if line ~= text and line ~= '' and history[#history] ~= line then
history_add(line)
end
line = text
if cursor_pos ~= nil and cursor_pos >= 1
and cursor_pos <= line:len() + 1 then
cursor = math.floor(cursor_pos)
else
cursor = line:len() + 1
end
history_pos = #history + 1
insert_mode = false
if repl_active then
update()
else
set_active(true)
end
end
-- Naive helper function to find the next UTF-8 character in 'str' after 'pos'
-- by skipping continuation bytes. Assumes 'str' contains valid UTF-8.
function next_utf8(str, pos)
if pos > str:len() then return pos end
repeat
pos = pos + 1
until pos > str:len() or str:byte(pos) < 0x80 or str:byte(pos) > 0xbf
return pos
end
-- As above, but finds the previous UTF-8 character in 'str' before 'pos'
function prev_utf8(str, pos)
if pos <= 1 then return pos end
repeat
pos = pos - 1
until pos <= 1 or str:byte(pos) < 0x80 or str:byte(pos) > 0xbf
return pos
end
function len_utf8(str)
local len = 0
local pos = 1
while pos <= str:len() do
pos = next_utf8(str, pos)
len = len + 1
end
return len
end
-- Insert a character at the current cursor position (any_unicode)
function handle_char_input(c)
if insert_mode then
line = line:sub(1, cursor - 1) .. c .. line:sub(next_utf8(line, cursor))
else
line = line:sub(1, cursor - 1) .. c .. line:sub(cursor)
end
cursor = cursor + #c
suggestion_buffer = {}
update()
end
-- Remove the character behind the cursor (Backspace)
function handle_backspace()
if cursor <= 1 then return end
local prev = prev_utf8(line, cursor)
line = line:sub(1, prev - 1) .. line:sub(cursor)
cursor = prev
suggestion_buffer = {}
update()
end
-- Remove the character in front of the cursor (Del)
function handle_del()
if cursor > line:len() then return end
line = line:sub(1, cursor - 1) .. line:sub(next_utf8(line, cursor))
suggestion_buffer = {}
update()
end
-- Toggle insert mode (Ins)
function handle_ins()
insert_mode = not insert_mode
end
-- Move the cursor to the next character (Right)
function next_char(amount)
cursor = next_utf8(line, cursor)
update()
end
-- Move the cursor to the previous character (Left)
function prev_char(amount)
cursor = prev_utf8(line, cursor)
update()
end
-- Clear the current line (Ctrl+C)
function clear()
line = ''
cursor = 1
insert_mode = false
history_pos = #history + 1
suggestion_buffer = {}
update()
end
-- Close the REPL if the current line is empty, otherwise delete the next
-- character (Ctrl+D)
function maybe_exit()
if line == '' then
set_active(false)
else
handle_del()
end
end
function help_command(param)
local cmdlist = mp.get_property_native('command-list')
table.sort(cmdlist, function(c1, c2)
return c1.name < c2.name
end)
local output = ''
if param == '' then
output = 'Available commands:\n'
for _, cmd in ipairs(cmdlist) do
output = output .. ' ' .. cmd.name
end
output = output .. '\n'
output = output .. 'Use "help command" to show information about a command.\n'
output = output .. "ESC or Ctrl+d exits the console.\n"
else
local cmd = nil
for _, curcmd in ipairs(cmdlist) do
if curcmd.name:find(param, 1, true) then
cmd = curcmd
if curcmd.name == param then
break -- exact match
end
end
end
if not cmd then
log_add(styles.error, 'No command matches "' .. param .. '"!')
return
end
output = output .. 'Command "' .. cmd.name .. '"\n'
for _, arg in ipairs(cmd.args) do
output = output .. ' ' .. arg.name .. ' (' .. arg.type .. ')'
if arg.optional then
output = output .. ' (optional)'
end
output = output .. '\n'
end
if cmd.vararg then
output = output .. 'This command supports variable arguments.\n'
end
end
log_add('', output)
end
-- Add a line to the history and deduplicate
function history_add(text)
if opts.history_dedup then
-- More recent entries are more likely to be repeated
for i = #history, 1, -1 do
if history[i] == text then
table.remove(history, i)
break
end
end
end
history[#history + 1] = text
end
-- Run the current command and clear the line (Enter)
function handle_enter()
if line == '' then
return
end
if history[#history] ~= line then
history_add(line)
end
-- match "help [<text>]", return <text> or "", strip all whitespace
local help = line:match('^%s*help%s+(.-)%s*$') or
(line:match('^%s*help$') and '')
if help then
help_command(help)
else
mp.command(line)
end
clear()
end
-- Go to the specified position in the command history
function go_history(new_pos)
local old_pos = history_pos
history_pos = new_pos
-- Restrict the position to a legal value
if history_pos > #history + 1 then
history_pos = #history + 1
elseif history_pos < 1 then
history_pos = 1
end
-- Do nothing if the history position didn't actually change
if history_pos == old_pos then
return
end
-- If the user was editing a non-history line, save it as the last history
-- entry. This makes it much less frustrating to accidentally hit Up/Down
-- while editing a line.
if old_pos == #history + 1 and line ~= '' and history[#history] ~= line then
history_add(line)
end
-- Now show the history line (or a blank line for #history + 1)
if history_pos <= #history then
line = history[history_pos]
else
line = ''
end
cursor = line:len() + 1
insert_mode = false
update()
end
-- Go to the specified relative position in the command history (Up, Down)
function move_history(amount)
go_history(history_pos + amount)
end
-- Go to the first command in the command history (PgUp)
function handle_pgup()
go_history(1)
end
-- Stop browsing history and start editing a blank line (PgDown)
function handle_pgdown()
go_history(#history + 1)
end
-- Move to the start of the current word, or if already at the start, the start
-- of the previous word. (Ctrl+Left)
function prev_word()
-- This is basically the same as next_word() but backwards, so reverse the
-- string in order to do a "backwards" find. This wouldn't be as annoying
-- to do if Lua didn't insist on 1-based indexing.
cursor = line:len() - select(2, line:reverse():find('%s*[^%s]*', line:len() - cursor + 2)) + 1
update()
end
-- Move to the end of the current word, or if already at the end, the end of
-- the next word. (Ctrl+Right)
function next_word()
cursor = select(2, line:find('%s*[^%s]*', cursor)) + 1
update()
end
local function command_list()
local commands = {}
for i, command in ipairs(mp.get_property_native('command-list')) do
commands[i] = command.name
end
return commands
end
local function command_list_and_help()
local commands = command_list()
commands[#commands + 1] = 'help'
return commands
end
local function property_list()
local option_info = {
'name', 'type', 'set-from-commandline', 'set-locally', 'default-value',
'min', 'max', 'choices',
}
local properties = mp.get_property_native('property-list')
for _, option in ipairs(mp.get_property_native('options')) do
properties[#properties + 1] = 'options/' .. option
properties[#properties + 1] = 'file-local-options/' .. option
properties[#properties + 1] = 'option-info/' .. option
for _, sub_property in ipairs(option_info) do
properties[#properties + 1] = 'option-info/' .. option .. '/' ..
sub_property
end
end
return properties
end
local function profile_list()
local profiles = {}
for i, profile in ipairs(mp.get_property_native('profile-list')) do
profiles[i] = profile.name
end
return profiles
end
local function list_option_list()
local options = {}
-- Don't log errors for renamed and removed properties.
-- (Just mp.enable_messages('fatal') still logs them to the terminal.)
local msg_level_backup = mp.get_property('msg-level')
mp.set_property('msg-level', msg_level_backup == '' and 'cplayer=no'
or msg_level_backup .. ',cplayer=no')
for _, option in pairs(mp.get_property_native('options')) do
if mp.get_property('option-info/' .. option .. '/type', ''):find(' list$') then
options[#options + 1] = option
end
end
mp.set_property('msg-level', msg_level_backup)
return options
end
local function list_option_verb_list(option)
local type = mp.get_property('option-info/' .. option .. '/type')
if type == 'Key/value list' then
return {'add', 'append', 'set', 'remove'}
end
if type == 'String list' or type == 'Object settings list' then
return {'add', 'append', 'clr', 'pre', 'set', 'remove', 'toggle'}
end
return {}
end
local function choice_list(option)
local info = mp.get_property_native('option-info/' .. option, {})
if info.type == 'Flag' then
return { 'no', 'yes' }
end
return info.choices or {}
end
local function find_commands_with_file_argument()
if #file_commands > 0 then
return file_commands
end
for _, command in pairs(mp.get_property_native('command-list')) do
if command.args[1] and
(command.args[1].name == 'filename' or command.args[1].name == 'url') then
file_commands[#file_commands + 1] = command.name
end
end
return file_commands
end
local function file_list(directory)
if directory == '' then
directory = '.'
end
local files = utils.readdir(directory, 'files') or {}
for _, dir in pairs(utils.readdir(directory, 'dirs') or {}) do
files[#files + 1] = dir .. path_separator
end
return files
end
-- List of tab-completions:
-- pattern: A Lua pattern used in string:match. It should return the start
-- position of the word to be completed in the first capture (using
-- the empty parenthesis notation "()"). In patterns with 2
-- captures, the first determines the completions, and the second is
-- the start of the word to be completed.
-- list: A function that returns a list of candidate completion values.
-- append: An extra string to be appended to the end of a successful
-- completion. It is only appended if 'list' contains exactly one
-- match.
function build_completers()
local completers = {
{ pattern = '^%s*()[%w_-]*$', list = command_list_and_help, append = ' ' },
{ pattern = '^%s*help%s+()[%w_-]*$', list = command_list },
{ pattern = '^%s*set%s+"?([%w_-]+)"?%s+()%S*$', list = choice_list },
{ pattern = '^%s*set%s+"?([%w_-]+)"?%s+"()%S*$', list = choice_list, append = '"' },
{ pattern = '^%s*cycle[-_]values%s+"?([%w_-]+)"?.-%s+()%S*$', list = choice_list, append = " " },
{ pattern = '^%s*cycle[-_]values%s+"?([%w_-]+)"?.-%s+"()%S*$', list = choice_list, append = '" ' },
{ pattern = '^%s*apply[-_]profile%s+"()%S*$', list = profile_list, append = '"' },
{ pattern = '^%s*apply[-_]profile%s+()%S*$', list = profile_list },
{ pattern = '^%s*change[-_]list%s+()[%w_-]*$', list = list_option_list, append = ' ' },
{ pattern = '^%s*change[-_]list%s+()"[%w_-]*$', list = list_option_list, append = '" ' },
{ pattern = '^%s*change[-_]list%s+"?([%w_-]+)"?%s+()%a*$', list = list_option_verb_list, append = ' ' },
{ pattern = '^%s*change[-_]list%s+"?([%w_-]+)"?%s+"()%a*$', list = list_option_verb_list, append = '" ' },
{ pattern = '^%s*([av]f)%s+()%a*$', list = list_option_verb_list, append = ' ' },
{ pattern = '^%s*([av]f)%s+"()%a*$', list = list_option_verb_list, append = '" ' },
{ pattern = '${=?()[%w_/-]*$', list = property_list, append = '}' },
}
for _, command in pairs({'set', 'add', 'cycle', 'cycle[-_]values', 'multiply'}) do
completers[#completers + 1] = {
pattern = '^%s*' .. command .. '%s+()[%w_/-]*$',
list = property_list,
append = ' ',
}
completers[#completers + 1] = {
pattern = '^%s*' .. command .. '%s+"()[%w_/-]*$',
list = property_list,
append = '" ',
}
end
for _, command in pairs(find_commands_with_file_argument()) do
completers[#completers + 1] = {
pattern = '^%s*' .. command:gsub('-', '[-_]') ..
'%s+["\']?(.-)()[^' .. path_separator ..']*$',
list = file_list,
-- Unfortunately appending " here would append it everytime a
-- directory is fully completed, even if you intend to browse it
-- afterwards.
}
end
return completers
end
-- Use 'list' to find possible tab-completions for 'part.'
-- Returns a list of all potential completions and the longest
-- common prefix of all the matching list items.
function complete_match(part, list)
local completions = {}
local prefix = nil
for _, candidate in ipairs(list) do
if candidate:sub(1, part:len()) == part then
if prefix and prefix ~= candidate then
local prefix_len = part:len()
while prefix:sub(1, prefix_len + 1)
== candidate:sub(1, prefix_len + 1) do
prefix_len = prefix_len + 1
end
prefix = candidate:sub(1, prefix_len)
else
prefix = candidate
end
completions[#completions + 1] = candidate
end
end
return completions, prefix
end
function common_prefix_length(s1, s2)
local common_count = 0
for i = 1, #s1 do
if s1:byte(i) ~= s2:byte(i) then
break
end
common_count = common_count + 1
end
return common_count
end
function max_overlap_length(s1, s2)
for s1_offset = 0, #s1 - 1 do
local match = true
for i = 1, #s1 - s1_offset do
if s1:byte(s1_offset + i) ~= s2:byte(i) then
match = false
break
end
end
if match then
return #s1 - s1_offset
end
end
return 0
end
-- Complete the option or property at the cursor (TAB)
function complete()
local before_cur = line:sub(1, cursor - 1)
local after_cur = line:sub(cursor)
-- Try the first completer that works
for _, completer in ipairs(build_completers()) do
-- Completer patterns should return the start of the word to be
-- completed as the first capture.
local s, s2 = before_cur:match(completer.pattern)
if not s then
-- Multiple input commands can be separated by semicolons, so all
-- completions that are anchored at the start of the string with
-- '^' can start from a semicolon as well. Replace ^ with ; and try
-- to match again.
s, s2 = before_cur:match(completer.pattern:gsub('^^', ';'))
end
if s then
local hint
if s2 then
hint = s
s = s2
end
-- If the completer's pattern found a word, check the completer's
-- list for possible completions
local part = before_cur:sub(s)
local completions, prefix = complete_match(part, completer.list(hint))
if #completions > 0 then
-- If there was only one full match from the list, add
-- completer.append to the final string. This is normally a
-- space or a quotation mark followed by a space.
local after_cur_index = 1
if #completions == 1 then
local append = completer.append or ''
prefix = prefix .. append
-- calculate offset into after_cur
local prefix_len = common_prefix_length(append, after_cur)
local overlap_size = max_overlap_length(append, after_cur)
after_cur_index = math.max(prefix_len, overlap_size) + 1
else
table.sort(completions)
suggestion_buffer = completions
end
-- Insert the completion and update
before_cur = before_cur:sub(1, s - 1) .. prefix
cursor = before_cur:len() + 1
line = before_cur .. after_cur:sub(after_cur_index)
update()
return
end
end
end
end
-- Move the cursor to the beginning of the line (HOME)
function go_home()
cursor = 1
update()
end
-- Move the cursor to the end of the line (END)
function go_end()
cursor = line:len() + 1
update()
end
-- Delete from the cursor to the beginning of the word (Ctrl+Backspace)
function del_word()
local before_cur = line:sub(1, cursor - 1)
local after_cur = line:sub(cursor)
before_cur = before_cur:gsub('[^%s]+%s*$', '', 1)
line = before_cur .. after_cur
cursor = before_cur:len() + 1
update()
end
-- Delete from the cursor to the end of the word (Ctrl+Del)
function del_next_word()
if cursor > line:len() then return end
local before_cur = line:sub(1, cursor - 1)
local after_cur = line:sub(cursor)
after_cur = after_cur:gsub('^%s*[^%s]+', '', 1)
line = before_cur .. after_cur
update()
end
-- Delete from the cursor to the end of the line (Ctrl+K)
function del_to_eol()
line = line:sub(1, cursor - 1)
update()
end
-- Delete from the cursor back to the start of the line (Ctrl+U)
function del_to_start()
line = line:sub(cursor)
cursor = 1
update()
end
-- Empty the log buffer of all messages (Ctrl+L)
function clear_log_buffer()
log_buffer = {}
update()
end
-- Returns a string of UTF-8 text from the clipboard (or the primary selection)
function get_clipboard(clip)
if platform == 'x11' then
local res = utils.subprocess({
args = { 'xclip', '-selection', clip and 'clipboard' or 'primary', '-out' },
playback_only = false,
})
if not res.error then
return res.stdout
end
elseif platform == 'wayland' then
local res = utils.subprocess({
args = { 'wl-paste', clip and '-n' or '-np' },
playback_only = false,
})
if not res.error then
return res.stdout
end
elseif platform == 'windows' then
local res = utils.subprocess({
args = { 'powershell', '-NoProfile', '-Command', [[& {
Trap {
Write-Error -ErrorRecord $_
Exit 1
}
$clip = ""
if (Get-Command "Get-Clipboard" -errorAction SilentlyContinue) {
$clip = Get-Clipboard -Raw -Format Text -TextFormatType UnicodeText
} else {
Add-Type -AssemblyName PresentationCore
$clip = [Windows.Clipboard]::GetText()
}
$clip = $clip -Replace "`r",""
$u8clip = [System.Text.Encoding]::UTF8.GetBytes($clip)
[Console]::OpenStandardOutput().Write($u8clip, 0, $u8clip.Length)
}]] },
playback_only = false,
})
if not res.error then
return res.stdout
end
elseif platform == 'darwin' then
local res = utils.subprocess({
args = { 'pbpaste' },
playback_only = false,
})
if not res.error then
return res.stdout
end
end
return ''
end
-- Paste text from the window-system's clipboard. 'clip' determines whether the
-- clipboard or the primary selection buffer is used (on X11 and Wayland only.)
function paste(clip)
local text = get_clipboard(clip)
local before_cur = line:sub(1, cursor - 1)
local after_cur = line:sub(cursor)
line = before_cur .. text .. after_cur
cursor = cursor + text:len()
update()
end
-- List of input bindings. This is a weird mashup between common GUI text-input
-- bindings and readline bindings.
function get_bindings()
local bindings = {
{ 'esc', function() set_active(false) end },
{ 'ctrl+[', function() set_active(false) end },
{ 'enter', handle_enter },
{ 'kp_enter', handle_enter },
{ 'shift+enter', function() handle_char_input('\n') end },
{ 'ctrl+j', handle_enter },
{ 'ctrl+m', handle_enter },
{ 'bs', handle_backspace },
{ 'shift+bs', handle_backspace },
{ 'ctrl+h', handle_backspace },
{ 'del', handle_del },
{ 'shift+del', handle_del },
{ 'ins', handle_ins },
{ 'shift+ins', function() paste(false) end },
{ 'mbtn_mid', function() paste(false) end },
{ 'left', function() prev_char() end },
{ 'ctrl+b', function() prev_char() end },
{ 'right', function() next_char() end },
{ 'ctrl+f', function() next_char() end },
{ 'up', function() move_history(-1) end },
{ 'ctrl+p', function() move_history(-1) end },
{ 'wheel_up', function() move_history(-1) end },
{ 'down', function() move_history(1) end },
{ 'ctrl+n', function() move_history(1) end },
{ 'wheel_down', function() move_history(1) end },
{ 'wheel_left', function() end },
{ 'wheel_right', function() end },
{ 'ctrl+left', prev_word },
{ 'alt+b', prev_word },
{ 'ctrl+right', next_word },
{ 'alt+f', next_word },
{ 'tab', complete },
{ 'ctrl+i', complete },
{ 'ctrl+a', go_home },
{ 'home', go_home },
{ 'ctrl+e', go_end },
{ 'end', go_end },
{ 'pgup', handle_pgup },
{ 'pgdwn', handle_pgdown },
{ 'ctrl+c', clear },
{ 'ctrl+d', maybe_exit },
{ 'ctrl+k', del_to_eol },
{ 'ctrl+l', clear_log_buffer },
{ 'ctrl+u', del_to_start },
{ 'ctrl+v', function() paste(true) end },
{ 'meta+v', function() paste(true) end },
{ 'ctrl+bs', del_word },
{ 'ctrl+w', del_word },
{ 'ctrl+del', del_next_word },
{ 'alt+d', del_next_word },
{ 'kp_dec', function() handle_char_input('.') end },
}
for i = 0, 9 do
bindings[#bindings + 1] =
{'kp' .. i, function() handle_char_input('' .. i) end}
end
return bindings
end
local function text_input(info)
if info.key_text and (info.event == "press" or info.event == "down"
or info.event == "repeat")
then
handle_char_input(info.key_text)
end
end
function define_key_bindings()
if #key_bindings > 0 then
return
end
for _, bind in ipairs(get_bindings()) do
-- Generate arbitrary name for removing the bindings later.
local name = "_console_" .. (#key_bindings + 1)
key_bindings[#key_bindings + 1] = name
mp.add_forced_key_binding(bind[1], name, bind[2], {repeatable = true})
end
mp.add_forced_key_binding("any_unicode", "_console_text", text_input,
{repeatable = true, complex = true})
key_bindings[#key_bindings + 1] = "_console_text"
end
function undefine_key_bindings()
for _, name in ipairs(key_bindings) do
mp.remove_key_binding(name)
end
key_bindings = {}
end
-- Add a global binding for enabling the REPL. While it's enabled, its bindings
-- will take over and it can be closed with ESC.
mp.add_key_binding(nil, 'enable', function()
set_active(true)
end)
-- Add a script-message to show the REPL and fill it with the provided text
mp.register_script_message('type', function(text, cursor_pos)
show_and_type(text, cursor_pos)
end)
-- Redraw the REPL when the OSD size changes. This is needed because the
-- PlayRes of the OSD will need to be adjusted.
mp.observe_property('osd-width', 'native', update)
mp.observe_property('osd-height', 'native', update)
mp.observe_property('display-hidpi-scale', 'native', update)
-- Enable log messages. In silent mode, mpv will queue log messages in a buffer
-- until enable_messages is called again without the silent: prefix.
mp.enable_messages('silent:terminal-default')
mp.register_event('log-message', function(e)
-- Ignore log messages from the OSD because of paranoia, since writing them
-- to the OSD could generate more messages in an infinite loop.
if e.prefix:sub(1, 3) == 'osd' then return end
-- Ignore messages output by this script.
if e.prefix == mp.get_script_name() then return end
-- Ignore buffer overflow warning messages. Overflowed log messages would
-- have been offscreen anyway.
if e.prefix == 'overflow' then return end
-- Filter out trace-level log messages, even if the terminal-default log
-- level includes them. These aren't too useful for an on-screen display
-- without scrollback and they include messages that are generated from the
-- OSD display itself.
if e.level == 'trace' then return end
-- Use color for debug/v/warn/error/fatal messages.
local style = ''
if e.level == 'debug' then
style = styles.debug
elseif e.level == 'v' then
style = styles.verbose
elseif e.level == 'warn' then
style = styles.warn
elseif e.level == 'error' then
style = styles.error
elseif e.level == 'fatal' then
style = styles.fatal
end
log_add(style, '[' .. e.prefix .. '] ' .. e.text)
end)
collectgarbage()