feat: implement a wrapper around curl

lua/cord/http/init.lua

@@ -0,0 +1,87 @@
+local M = {}
+
+M.get = function(args, callback)
+  local stdout = vim.loop.new_pipe()
+  local stderr = vim.loop.new_pipe()
+  local chunks = {}
+  local error_output = ''
+
+  local handle
+  handle = vim.loop.spawn('curl', {
+    args = args,
+    stdio = { nil, stdout, stderr },
+    hide = true,
+  }, function(code, _)
+    if code ~= 0 then
+      stdout:close()
+      stderr:close()
+      handle:close()
+      return callback(
+        nil,
+        'curl exited with code: ' .. code .. '\nError: ' .. error_output
+      )
+    end
+
+    stdout:read_start(function(err, chunk)
+      if err then
+        stdout:close()
+        stderr:close()
+        callback(nil, 'Read error: ' .. err)
+      elseif chunk then
+        table.insert(chunks, chunk)
+      else
+        stdout:close()
+        stderr:close()
+        callback(table.concat(chunks))
+      end
+    end)
+    handle:close()
+  end)
+
+  if not handle then
+    stdout:close()
+    stderr:close()
+    callback(nil, 'Failed to spawn curl process')
+    return
+  end
+
+  stderr:read_start(function(err, data)
+    assert(not err, err)
+    if data then error_output = error_output .. data end
+  end)
+end
+
+M.execute = function(args, callback)
+  local stderr = vim.loop.new_pipe(false)
+  local error_output = ''
+
+  local handle
+  handle = vim.loop.spawn('curl', {
+    args = args,
+    stdio = { nil, nil, stderr },
+    hide = true,
+  }, function(code, _)
+    stderr:read_stop()
+    stderr:close()
+    handle:close()
+
+    if code ~= 0 then
+      callback('curl exited with code: ' .. code .. '\nError: ' .. error_output)
+    else
+      callback()
+    end
+  end)
+
+  if not handle then
+    stderr:close()
+    callback 'Failed to spawn curl process'
+    return
+  end
+
+  stderr:read_start(function(err, data)
+    assert(not err, err)
+    if data then error_output = error_output .. data end
+  end)
+end
+
+return M