Added plugin `exec`

1 files changed, 40 insertions, 0 deletions

diff --git a/plugins/exec.lua b/plugins/exec.lua
new file mode 100644
index 0000000..e3decfd
--- /dev/null
+++ b/plugins/exec.lua
@@ -0,0 +1,40 @@
+local core = require "core"
+local command = require "core.command"
+
+
+local function exec(cmd, keep_newline)
+  local fp = io.popen(cmd, "r")
+  local res = fp:read("*a")
+  fp:close()
+  return keep_newline and res or res:gsub("%\n$", "")
+end
+
+
+local function printfb_quote(str)
+  local sub = {
+    ["\\"] = "\\\\",
+    [string.char(0)] = "\\0000",
+    ["'"] = "'\\''",
+  }
+  return "'" .. str:gsub(".", sub) .. "'"
+end
+
+
+command.add("core.docview", {
+  ["exec:insert"] = function()
+    core.command_view:enter("Insert Result Of Command", function(cmd)
+      core.active_view.doc:text_input(exec(cmd))
+    end)
+  end,
+
+  ["exec:replace"] = function()
+    core.command_view:enter("Replace With Result Of Command", function(cmd)
+      core.active_view.doc:replace(function(str)
+        return exec(
+          "printf %b " .. printfb_quote(str:gsub("%\n$", "") .. "\n") .. " | " .. cmd,
+          str:find("%\n$")
+        )
+      end)
+    end)
+  end,
+})