187 lines
5.0 KiB
Lua
Raw Normal View History

local M = {}
-- local type_check = require("Trans.util.debug").type_check
-- NOTE :中文字符及占两个字节宽但是在lua里是3个字节长度
-- 为了解决中文字符在lua的长度和neovim显示不一致的问题
function string:width()
return vim.fn.strdisplaywidth(self)
end
-- 各种风格的基础宽度
local style_width = {
-- float = require("Trans.conf.window").float.width, -- NOTE : need window parsed conf
cursor = 60,
}
local s_to_b = true -- 从小到大排列
local m_fields -- 待格式化的字段
local m_indent -- 每行的行首缩进
local m_tot_width -- 所有字段加起来的长度(不包括缩进和间隔)
local m_interval -- 每个字段的间隔
local m_win_width -- 需要被格式化窗口的高度
local m_item_width -- 每个字段的宽度
local m_size
local function caculate_format()
local width = m_win_width - m_item_width[1]
local cols = 0
for i = 2, #m_fields do
width = width - m_item_width[i] - m_interval
if width < 0 then
cols = i - 1
break
else
cols = i
end
end
return math.ceil(#m_fields / cols), cols
end
local function format_to_line()
local line = m_fields[1]
if m_size == 1 then
--- Center Align
local space = math.floor((m_win_width - m_item_width[1]) / 2)
line = (' '):rep(space) .. line
else
local space = math.floor((m_win_width - m_tot_width) / m_size - 1)
for i = 2, m_size do
line = line .. (' '):rep(space) .. m_fields[i]
end
end
return line
end
local function sort_tables()
table.sort(m_item_width, function (a, b)
return a > b
end)
table.sort(m_fields, function (a, b)
return a:width() > b:width()
end)
end
local function format_to_multilines()
local lines = {}
sort_tables()
--- NOTE 计算应该格式化成多少行和列
local rows, cols = caculate_format()
local rest = #m_fields % cols
if rest == 0 then
rest = cols
end
local s_width = m_item_width[1] -- 列中最宽的字符串宽度
-- NOTE : 第一列不需要加空格
for i = 1, rows do
local idx = s_to_b and rows - i + 1 or i
local space = (' '):rep(s_width - m_item_width[i])
lines[idx] = m_fields[i] .. space -- NOTE 由大到小
end
local index = rows + 1 -- 最宽字符的下标
local interval = (' '):rep(m_interval) -- 每个字符串间的间隙
for j = 2, cols do -- 以列为单位遍历
s_width = m_item_width[index]
local stop = (j > rest and rows - 1 or rows)
for i = 1, stop do
local idx = s_to_b and stop - i + 1 or i -- 当前操作的行数
local item = index + i - 1 -- 当前操作的字段数
local space = (' '):rep(s_width - m_item_width[item]) -- 对齐空格
lines[idx] = lines[idx] .. interval .. m_fields[item] .. space -- NOTE 从大到小
end
index = index + stop -- 更新最宽字符的下标
end
return lines
end
local function get_formatted_lines()
local lines = {}
-- NOTE : 判断能否格式化成一行
local line_size = m_tot_width + (#m_fields * m_interval)
if line_size > m_win_width then
lines = format_to_multilines()
else
lines[1] = format_to_line()
end
-- NOTE :进行缩进
if m_indent > 0 then
for i, v in ipairs(lines) do
lines[i] = (' '):rep(m_indent) .. v
end
end
return lines
end
---将组件格式化成相应的vim支持的lines格式
---@param style string 窗口的风格
---@param fields string[] 需要格式化的字段
---@param indent? number 缩进的长度
---@return string[] lines 便于vim.api.nvim_buf_set_lines
M.to_lines = function(style, fields, indent)
local length = 0
local width = 0
local item_size = {}
for i, v in ipairs(fields) do
width = v:width()
item_size[i] = width
length = length + width
end
m_indent = indent or 0
m_win_width = style_width[style] - m_indent
m_fields = fields
m_tot_width = length
m_item_width = item_size
m_interval = m_win_width > 50 and 6 or 4
m_size = #fields
return get_formatted_lines()
end
local test = {
'isjlk测试dj',
'测试一下..',
}
local lines = M.to_lines('cursor', test)
-- print('===========================================')
-- for _, v in ipairs(test) do
-- print(v .. ' width:', v:width())
-- end
-- print('===========================================')
-- print('===========================================')
-- print('===========================================')
-- print('type is :' .. type(lines) .. ' size is :' .. #lines[1])
for _, v in ipairs(test) do
print(v:width())
end
-- lines = M.to_lines('cursor', {
-- 'ajlkasj',
-- 'jklasjldajjnn测试',
-- '测试将安得拉蓝色',
-- 'cool this',
-- }, 4)
-- for _, v in ipairs(lines) do
-- print(v)
-- end
return M