refactor: rename the atom directory to shell

shell/app/command_line_args.cc

@@ -0,0 +1,53 @@
+// Copyright (c) 2018 GitHub, Inc.
+// Use of this source code is governed by the MIT license that can be
+// found in the LICENSE file.
+
+#include "atom/app/command_line_args.h"
+
+namespace {
+
+bool IsUrlArg(const base::CommandLine::CharType* arg) {
+  // the first character must be a letter for this to be a URL
+  auto c = *arg;
+  if (('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z')) {
+    for (auto* p = arg + 1; *p; ++p) {
+      c = *p;
+
+      // colon indicates that the argument starts with a URI scheme
+      if (c == ':') {
+        // it could also be a Windows filesystem path
+        if (p == arg + 1)
+          break;
+
+        return true;
+      }
+
+      // white-space before a colon means it's not a URL
+      if (c == ' ' || (0x9 <= c && c <= 0xD))
+        break;
+    }
+  }
+
+  return false;
+}
+
+}  // namespace
+
+namespace atom {
+
+bool CheckCommandLineArguments(int argc, base::CommandLine::CharType** argv) {
+  const base::CommandLine::StringType dashdash(2, '-');
+  bool block_args = false;
+  for (int i = 0; i < argc; ++i) {
+    if (argv[i] == dashdash)
+      break;
+    if (block_args) {
+      return false;
+    } else if (IsUrlArg(argv[i])) {
+      block_args = true;
+    }
+  }
+  return true;
+}
+
+}  // namespace atom