rxi · qrmoon · Jul 23, 2020 · Jul 23, 2020 · Jul 23, 2020 · Jul 23, 2020
diff --git a/README.md b/README.md
@@ -71,6 +71,7 @@ Plugin | Description
 [`openfilelocation`](plugins/openfilelocation.lua?raw=1) | Opens the parent directory of the current file in the file manager
 [`openselected`](plugins/openselected.lua?raw=1) | Opens the selected filename or url
 [`projectmanager`](plugins/projectmanager.lua?raw=1) | Save projects and load/reload them quickly
+[`runinterminal`](plugins/runinterminal.lua?raw=1) | Runs the currently open file in a terminal window (`f5` or `run:run-doc`)
 [`scale`](plugins/scale.lua?raw=1) | Provides support for dynamically adjusting the scale of the code font / UI (`ctrl+-`, `ctrl+=`)
 [`scalestatus`](plugins/scalestatus.lua?raw=1) | Displays current scale (zoom) in status view (depends on scale plugin)
 [`selectionhighlight`](plugins/selectionhighlight.lua?raw=1) | Highlights regions of code that match the current selection *([screenshot](https://user-images.githubusercontent.com/3920290/80710883-5f597c80-8ae7-11ea-97f0-76dfacc08439.png))*

diff --git a/plugins/runinterminal.lua b/plugins/runinterminal.lua
@@ -0,0 +1,101 @@
+local core = require "core"
+local common = require "core.common"
+local command = require "core.command"
+local config = require "core.config"
+local keymap = require "core.keymap"
+
+local run = {}
+
+-- return a function which will run the current doc
+-- as a script for the given language
+function run.lang(lang)
+  return function()
+    local doc = core.active_view.doc
+    if doc.filename then
+      doc:save()
+    else
+      core.error("Cannot run an unsaved file")
+      return
+    end
+
+    core.log "Running a file..."
+    local cmd = assert(config.run[lang]):format(
+      "\"" .. core.active_view.doc.filename .. "\""
+    )
+
+    os.execute(config.run_cmd:format(cmd))
+  end
+end
+
+-- same as run.lang except it doesn't use the active doc's name
+-- (thus doesn't require a docview to be open)
+function run.build(build)
+  return function()
+    core.log "Running a build..."
+    local cmd = assert(config.run[build])
+
+    os.execute(config.run_cmd:format(cmd))
+  end
+end
+
+-- file extensions and functions
+config.run_files = {
+  ["%.py$"] = run.lang "python",
+  ["%.pyw$"] = run.lang "python",
+  ["%.lua$"] = run.lang "lua",
+  ["%.c$"] = run.lang "c",
+}
+
+-- system commands for running files
+-- the filename is already quoted
+config.run = {
+  python = "python %s",
+  lua = "lua %s",
+  c = "gcc %s && " .. (PLATFORM == "Windows" and "a.exe" or "./a.out"),
+}
+
+-- for systems other than Windows
+if PLATFORM == "Windows" then
+  config.run_cmd = "start cmd /c \"call %s & pause\""
+else
+  config.run_cmd = "xterm -hold -e \"%s\""
+end
+
+local function compare_length(a, b)
+  return a.length > b.length
+end
+
+-- choose the proper function based on filename
+function run.choose()
+  local doc = core.active_view.doc
+  local res = {}
+  for pattern, func in pairs(config.run_files) do
+    local s, e = common.match_pattern(doc.filename, pattern)
+    if s then
+      table.insert(res, { func=func, length=e-s })
+    end
+  end
+  if #res == 0 then return false end
+  table.sort(res, compare_length)
+  return res[1].func
+end
+
+-- run the currently open doc
+function run.run_doc()
+  local func = run.choose()
+  if not func then
+    core.error "No matching run configuration was found"
+    return
+  end
+  func()
+end
+
+command.add("core.docview", {
+  ["run:run-doc"] = run.run_doc,
+})
+
+keymap.add {
+  ["f5"] = "run:run-doc",
+}
+
+return run