a6ab121d12
using telescope picker ask if want to change default theme, change value in user_config.lua load it as a telescope extension live preview of themes Co-authored-by: Galen Rowell <growell3@gmail.com>
96 lines
3 KiB
Lua
96 lines
3 KiB
Lua
local M = {}
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-- reload a plugin ( will try to load even if not loaded)
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-- can take a string or list ( table )
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M.reload_plugin = function(plugins)
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local function _reload_plugin(plugin)
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local loaded = package.loaded[plugin]
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if loaded then
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package.loaded[plugin] = nil
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end
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if not pcall(require, plugin) then
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error("Error: Cannot load " .. plugin .. " plugin!")
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end
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end
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if type(plugins) == "string" then
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_reload_plugin(plugins)
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elseif type(plugins) == "table" then
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for _, plugin in ipairs(plugins) do
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_reload_plugin(plugin)
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end
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end
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end
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-- return a table of available themes
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M.list_themes = function(return_type)
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local themes = {}
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-- folder where theme files are stored
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local themes_folder = vim.fn.stdpath("config") .. "/lua/themes"
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-- list all the contents of the folder and filter out files with .lua extension, then append to themes table
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local fd = vim.loop.fs_scandir(themes_folder)
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if fd then
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while true do
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local name, typ = vim.loop.fs_scandir_next(fd)
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if name == nil then
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break
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end
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if typ ~= "directory" and string.find(name, ".lua") then
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-- return the table values as keys if specified
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if return_type == "keys_as_value" then
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themes[vim.fn.fnamemodify(name, ":r")] = true
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else
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table.insert(themes, vim.fn.fnamemodify(name, ":r"))
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end
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end
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end
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end
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return themes
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end
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-- 1st arg - r or w
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-- 2nd arg - file path
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-- 3rd arg - content if 1st arg is w
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-- return file data on read, nothing on write
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M.file = function(mode, filepath, content)
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local data
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local fd = assert(vim.loop.fs_open(filepath, mode, 438))
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local stat = assert(vim.loop.fs_fstat(fd))
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if stat.type ~= "file" then
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data = false
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else
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if mode == "r" then
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data = assert(vim.loop.fs_read(fd, stat.size, 0))
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else
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assert(vim.loop.fs_write(fd, content, 0))
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data = true
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end
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end
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assert(vim.loop.fs_close(fd))
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return data
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end
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-- 1st arg as current theme, 2nd as new theme
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M.change_theme = function(current_theme, new_theme)
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if current_theme == nil or new_theme == nil then
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error "Provide current and new theme name"
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end
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if current_theme == new_theme then
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return
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end
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local file = vim.fn.stdpath("config") .. "/lua/user_config.lua"
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-- store in data variable
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local data = assert(M.file("r", file))
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local find = "theme = .?" .. current_theme .. ".?"
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local replace = 'theme = "' .. new_theme .. '"'
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local content = string.gsub(data, find, replace)
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-- see if the find string exists in file
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if content == data then
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error("Cannot change default theme with " .. new_theme .. ", edit " .. file .. " manually")
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else
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assert(M.file("w", file, content))
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end
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end
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return M
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