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markdown.lua
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markdown.lua
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-- * code from: https://github.com/jasonrudolph/keyboard/blob/main/hammerspoon/markdown.lua
function delayKeyUpDownLeftArrow(triggerCount)
hs.timer.doAfter(0.01, function()
for i = triggerCount, 1, -1 do
keyUpDown('', 'left')
end
end)
end
function cacheClipboard(fn)
-- Fetch content from the system clipboard
local originalClipboardContents = hs.pasteboard.getContents()
fn(originalClipboardContents)
-- Allow some time for the command+v keystroke to fire asynchronously before
-- we restore the original clipboard
hs.timer.doAfter(0.2, function()
hs.pasteboard.setContents(originalClipboardContents)
end)
end
function inputContent(text)
cacheClipboard(function()
hs.pasteboard.setContents(text)
keyUpDown('cmd', 'v')
end)
end
function createHeading(level)
local focusedElement = hs.uielement.focusedElement()
local selectedText = focusedElement and focusedElement:selectedText() or ''
local numberSign = ''
for i = 1, level, 1 do
numberSign = numberSign .. '#'
end
-- todo: see the todo in wrapSelectedText
if (focusedElement == nil or selectedText == '') then
inputContent(numberSign .. ' ')
else
inputContent(numberSign .. ' ' .. selectedText)
end
end
function wrapSelectedText(wrapCharacters, copy)
if copy == nil then
copy = true -- 默认为 true
end
cacheClipboard(function(originSelectText)
if copy then
-- Copy the selected text to the clipboard
hs.eventtap.keyStroke({"cmd"}, "c")
-- hs.timer.usleep(5000)
end
local selectedText = copy and hs.pasteboard.getContents() or ''
if selectedText and selectedText ~= '' then
-- Insert the wrapped text
inputContent(wrapCharacters .. selectedText .. wrapCharacters)
else
inputContent(wrapCharacters .. '' .. wrapCharacters)
delayKeyUpDownLeftArrow(#wrapCharacters)
end
end)
end
function inlineLink()
local clipboardContent = hs.pasteboard.getContents()
local contentIsUrl = clipboardContent and string.match(clipboardContent, '[a-z]*://[^ >,;]*') or false
local linkUrl = contentIsUrl and clipboardContent or ''
local focusedElement = hs.uielement.focusedElement()
local selectedText = focusedElement and focusedElement:selectedText() or ''
-- todo: see the todo in wrapSelectedText
if (focusedElement == nil or selectedText == '') then
inputContent('[' .. '' .. '](' .. linkUrl .. ')')
delayKeyUpDownLeftArrow(3 + #linkUrl)
else
inputContent('[' .. selectedText .. '](' .. linkUrl .. ')')
if linkUrl == '' then
delayKeyUpDownLeftArrow(1)
end
end
end
--------------------------------------------------------------------------------
-- Define Markdown Mode
--
-- Markdown Mode allows you to perform common Markdown-formatting tasks anywhere
-- that you're editing text. Use Control+m to turn on Markdown mode. Then, use
-- any shortcut below to perform a formatting action. For example, to format the
-- selected text as bold in Markdown, hit Control+m, and then b.
--
-- 1 - 6 => print # befor the selected text (e.g., # H1, ## H2)
-- t => print task list ("t" for "task list")
-- d => print dashes ("d" for "dashes")
-- h => wrap the selected text in double equal sign ("h" for "hightlight")
-- b => wrap the selected text in double asterisks ("b" for "bold")
-- c => wrap the selected text in backticks ("c" for "code")
-- i => wrap the selected text in single asterisks ("i" for "italic")
-- s => wrap the selected text in double tildes ("s" for "strikethrough")
-- l => convert the currently-selected text to an inline link, using a URL from the clipboard ("l" for "link")
--------------------------------------------------------------------------------
markdownMode = hs.hotkey.modal.new({}, 'F20')
local message = require('status-message')
markdownMode.statusMessage = message.new('Markdown Mode (control-m)')
markdownMode.entered = function()
markdownMode.statusMessage:show()
end
markdownMode.exited = function()
markdownMode.statusMessage:hide()
end
-- Bind the given key to call the given function and exit Markdown mode
function markdownMode.bindWithAutomaticExit(mode, key, fn, mods)
if mods == nil then
mods = {}
end
mode:bind(mods, key, function()
mode:exit()
fn()
end)
end
-- 任务
markdownMode:bindWithAutomaticExit('t', function()
inputContent('- [ ] ')
end)
-- 插入图片
markdownMode:bindWithAutomaticExit('p', function()
inputContent('![]()')
delayKeyUpDownLeftArrow(3)
end)
-- 分割线
markdownMode:bindWithAutomaticExit('d', function()
inputContent('---')
end)
-- 链接
markdownMode:bindWithAutomaticExit('l', function()
inlineLink()
end)
-- 加粗
markdownMode:bindWithAutomaticExit('b', function()
wrapSelectedText('**')
end)
markdownMode:bindWithAutomaticExit('b', function()
wrapSelectedText('**', false)
end, {'shift'})
-- 斜体
markdownMode:bindWithAutomaticExit('i', function()
wrapSelectedText('*')
end)
markdownMode:bindWithAutomaticExit('i', function()
wrapSelectedText('*', false)
end, {'shift'})
-- 删除线
markdownMode:bindWithAutomaticExit('s', function()
wrapSelectedText('~~')
end)
markdownMode:bindWithAutomaticExit('s', function()
wrapSelectedText('~~', false)
end, {'shift'})
-- 代码
markdownMode:bindWithAutomaticExit('c', function()
wrapSelectedText('`')
end)
markdownMode:bindWithAutomaticExit('c', function()
wrapSelectedText('`', false)
end, {'shift'})
-- 高亮
markdownMode:bindWithAutomaticExit('h', function()
wrapSelectedText('==')
end)
markdownMode:bindWithAutomaticExit('h', function()
wrapSelectedText('==', false)
end, {'shift'})
-- 标题
for i = 1, 6, 1 do
markdownMode:bindWithAutomaticExit(tostring(i), function()
createHeading(i)
end)
end
-- Use Control+m to toggle Markdown Mode
hs.hotkey.bind({'ctrl'}, 'm', function()
markdownMode:enter()
end)
-- Use Control+m or escape to exit Markdown Mode
markdownMode:bind({'ctrl'}, 'm', function()
markdownMode:exit()
end)
markdownMode:bind({}, 'escape', function()
markdownMode:exit()
end)