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--
-- melisma - extensible and scriptable audio engine
-- Copyright (C) 2026 Ludvig Gunne Lindström
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 3 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program. If not, see <https://www.gnu.org/licenses/>.
--
local M = {}
function M.deepstring(value,visited,depth,is_key)
if not is_key and type(value) == 'string' then return '\'' .. value .. '\'' end
if type(value) ~= 'table' then return tostring(value) end
if next(value) == nil then return '{}' end
visited = visited or {}
visited[value] = true
depth = depth or 0
local indent = string.rep(' ',depth)
local str = {}
local function append(...) table.insert(str,string.format(...)) end
append('{ ')
for k,v in pairs(value) do
if visited[k] then k='{...}' else k=M.deepstring(k,visited,depth+1,true) end
if visited[v] then v='{...}' else v=M.deepstring(v,visited,depth+1) end
append(indent .. ' ' .. '%s = %s, ',k,v)
end
append(indent .. '}')
return table.concat(str,'\n')
end
function M.deepcopy(x)
if type(x) ~= 'table' then return x end
local copy = {}
for k,v in pairs(x) do copy[k] = M.deepcopy(v) end
return copy
end
function M.size(x)
local s = 0
for _,_ in pairs(x) do
s = s + 1
end
return s
end
function M.image(a,b,c,d,x) return (x - a)/(b - a)*(d - c) + c end
function M.select(list,prompt)
for i,entry in ipairs(list) do
print(i,entry)
end
while true do
io.write(prompt .. '> ')
io.flush()
local input = io.read('*l')
local i = tonumber(input)
if i == nil then
print()
error()
end
if i >= 1 and i <= #list then
return list[i]
end
end
end
function M.splitcmd(str)
local words = {}
local word = ''
local state = 'skip'
for i = 1,#str do
local c = string.sub(str,i,i)
if state == 'skip' then
if c == '"' then
state = 'string'
elseif c ~= ' ' then
state = 'take'
word = word .. c
end
elseif state == 'take' then
if c == ' ' then
state = 'skip'
table.insert(words,word)
word = ''
elseif c == '"' then
state = 'string'
else
word = word .. c
end
elseif state == 'string' then
if c == '"' then
state = 'take'
else
word = word .. c
end
end
end
if state ~= 'skip' then
table.insert(words,word)
end
return words
end
function M.openmodule(module)
if module.lazy_require_getmodule ~= nil then
module = module.lazy_require_getmodule()
end
for k,v in pairs(module) do
if string.sub(k,1,2) ~= '__' then
_G[k] = v
end
end
end
return M
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