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hypr/default/helpers.lua

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+-- Shared helpers for Hyprland Lua configuration.
+
+o = o or {}
+
+local function shell_quote(value)
+  return "'" .. tostring(value):gsub("'", "'\\''") .. "'"
+end
+
+o.shell_quote = shell_quote
+
+local function file_exists(path)
+  local file = io.open(path, "r")
+  if file then
+    file:close()
+    return true
+  end
+
+  return false
+end
+
+-- Hyprland reaps its own children, so os.execute() can't retrieve an exit status
+-- from inside the compositor. Read a marker off stdout instead.
+function o.shell_succeeds(command)
+  -- Subshell, so the redirection covers every command rather than binding to
+  -- the last one and letting an earlier one write its own OK into the pipe.
+  local pipe = io.popen("( " .. command .. " ) >/dev/null 2>&1 && echo OK")
+  if not pipe then
+    return false
+  end
+
+  local output = pipe:read("*a") or ""
+  pipe:close()
+
+  return output:find("OK", 1, true) ~= nil
+end
+
+function o.cmd_present(command)
+  if command:find("/", 1, true) then
+    return file_exists(command)
+  end
+
+  local path = os.getenv("PATH") or "/usr/local/bin:/usr/bin"
+  for directory in (path .. ":"):gmatch("([^:]*):") do
+    if file_exists((directory ~= "" and directory or ".") .. "/" .. command) then
+      return true
+    end
+  end
+
+  return false
+end
+
+function o.cmd_missing(command)
+  return not o.cmd_present(command)
+end
+
+local function command_from(value, description)
+  if type(value) ~= "table" then
+    return value
+  end
+
+  if value.blob then
+    return "blob-launch-" .. value.blob
+  elseif value.focus and value.launch then
+    return o.launch_sole(value.focus, value.launch)
+  elseif value.launch then
+    return o.launch(value.launch)
+  elseif value.webapp then
+    if value.focus then
+      return o.launch_webapp_sole(description, value.webapp)
+    else
+      return o.launch_webapp(value.webapp)
+    end
+  elseif value.tui then
+    if value.focus then
+      return "blob-launch-or-focus-tui " .. shell_quote(value.tui)
+    else
+      return "blob-launch-tui " .. shell_quote(value.tui)
+    end
+  end
+
+  return value
+end
+
+function o.preinstalled_bindings_enabled()
+  if _G.blob_preinstalled_bindings ~= nil then
+    return _G.blob_preinstalled_bindings == true
+  end
+
+  return not file_exists((os.getenv("HOME") or "") .. "/.local/state/blob/preinstalls-removed")
+end
+
+function o.bind(keys, description, dispatcher, options)
+  local opts = options or {}
+
+  if description then
+    opts.description = description
+  end
+
+  dispatcher = command_from(dispatcher, description)
+
+  if type(dispatcher) == "string" then
+    dispatcher = hl.dsp.exec_cmd(dispatcher)
+  end
+
+  hl.bind(keys, dispatcher, opts)
+end
+
+function o.launch(command)
+  return "uwsm-app -- " .. command
+end
+
+function o.exec_on_start(command)
+  hl.on("hyprland.start", function()
+    hl.exec_cmd(command)
+  end)
+end
+
+function o.launch_on_start(command)
+  o.exec_on_start(o.launch(command))
+end
+
+function o.launch_webapp(url)
+  return "blob-launch-webapp " .. shell_quote(url)
+end
+
+function o.launch_webapp_sole(name, url)
+  return "blob-launch-or-focus-webapp " .. shell_quote(name) .. " " .. shell_quote(url)
+end
+
+function o.launch_sole(match, command)
+  return "blob-launch-or-focus " .. shell_quote(match) .. " " .. shell_quote(o.launch(command))
+end
+
+function o.bind_toggle(keys, description, toggle, options)
+  o.bind(keys, description, "blob-toggle-" .. toggle, options)
+end
+
+function o.notify(message)
+  return "blob-notify-send -u low " .. shell_quote(message)
+end
+
+function o.window(match, rules)
+  rules.match = rules.match or {}
+
+  if type(match) == "string" then
+    rules.match.class = match
+  else
+    for key, value in pairs(match) do
+      rules.match[key] = value
+    end
+  end
+
+  hl.window_rule(rules)
+end