Remove readline support from d8.

src/d8-readline.cc

Index: src/d8-readline.cc
diff --git a/src/d8-readline.cc b/src/d8-readline.cc
deleted file mode 100644
index e57b7567e3b5dd4a36701a8e62dcbad371ed5cc2..0000000000000000000000000000000000000000
--- a/src/d8-readline.cc
+++ /dev/null
@@ -1,155 +0,0 @@
-// Copyright 2012 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include <stdio.h>  // NOLINT
-#include <string.h> // NOLINT
-#include <readline/readline.h> // NOLINT
-#include <readline/history.h> // NOLINT
-
-// The readline includes leaves RETURN defined which breaks V8 compilation.
-#undef RETURN
-
-#include "src/d8.h"
-
-// There are incompatibilities between different versions and different
-// implementations of readline.  This smooths out one known incompatibility.
-#if RL_READLINE_VERSION >= 0x0500
-#define completion_matches rl_completion_matches
-#endif
-
-
-namespace v8 {
-
-
-class ReadLineEditor: public LineEditor {
- public:
-  ReadLineEditor() : LineEditor(LineEditor::READLINE, "readline") { }
-  virtual Local<String> Prompt(const char* prompt);
-  virtual bool Open(Isolate* isolate);
-  virtual bool Close();
-  virtual void AddHistory(const char* str);
-
-  static const char* kHistoryFileName;
-  static const int kMaxHistoryEntries;
-
- private:
-#ifndef V8_SHARED
-  static char** AttemptedCompletion(const char* text, int start, int end);
-  static char* CompletionGenerator(const char* text, int state);
-#endif  // V8_SHARED
-  static char kWordBreakCharacters[];
-
-  Isolate* isolate_;
-};
-
-
-static ReadLineEditor read_line_editor;
-char ReadLineEditor::kWordBreakCharacters[] = {' ', '\t', '\n', '"',
-    '\\', '\'', '`', '@', '.', '>', '<', '=', ';', '|', '&', '{', '(',
-    '\0'};
-
-
-const char* ReadLineEditor::kHistoryFileName = ".d8_history";
-const int ReadLineEditor::kMaxHistoryEntries = 1000;
-
-
-bool ReadLineEditor::Open(Isolate* isolate) {
-  isolate_ = isolate;
-
-  rl_initialize();
-
-#ifdef V8_SHARED
-  // Don't do completion on shared library mode
-  // http://cnswww.cns.cwru.edu/php/chet/readline/readline.html#SEC24
-  rl_bind_key('\t', rl_insert);
-#else
-  rl_attempted_completion_function = AttemptedCompletion;
-#endif  // V8_SHARED
-
-  rl_completer_word_break_characters = kWordBreakCharacters;
-  rl_bind_key('\t', rl_complete);
-  using_history();
-  stifle_history(kMaxHistoryEntries);
-  return read_history(kHistoryFileName) == 0;
-}
-
-
-bool ReadLineEditor::Close() {
-  return write_history(kHistoryFileName) == 0;
-}
-
-
-Local<String> ReadLineEditor::Prompt(const char* prompt) {
-  char* result = NULL;
-  result = readline(prompt);
-  if (result == NULL) return Local<String>();
-  AddHistory(result);
-  return String::NewFromUtf8(isolate_, result, NewStringType::kNormal)
-      .ToLocalChecked();
-}
-
-
-void ReadLineEditor::AddHistory(const char* str) {
-  // Do not record empty input.
-  if (strlen(str) == 0) return;
-  // Remove duplicate history entry.
-  history_set_pos(history_length-1);
-  if (current_history()) {
-    do {
-      if (strcmp(current_history()->line, str) == 0) {
-        remove_history(where_history());
-        break;
-      }
-    } while (previous_history());
-  }
-  add_history(str);
-}
-
-
-#ifndef V8_SHARED
-char** ReadLineEditor::AttemptedCompletion(const char* text,
-                                           int start,
-                                           int end) {
-  char** result = completion_matches(text, CompletionGenerator);
-  rl_attempted_completion_over = true;
-  return result;
-}
-
-
-char* ReadLineEditor::CompletionGenerator(const char* text, int state) {
-  static unsigned current_index;
-  static Global<Array> current_completions;
-  Isolate* isolate = read_line_editor.isolate_;
-  HandleScope scope(isolate);
-  Local<Array> completions;
-  if (state == 0) {
-    Local<String> full_text =
-        String::NewFromUtf8(isolate, rl_line_buffer, NewStringType::kNormal,
-                            rl_point)
-            .ToLocalChecked();
-    completions = Shell::GetCompletions(
-        isolate, String::NewFromUtf8(isolate, text, NewStringType::kNormal)
-                     .ToLocalChecked(),
-        full_text);
-    current_completions.Reset(isolate, completions);
-    current_index = 0;
-  } else {
-    completions = Local<Array>::New(isolate, current_completions);
-  }
-  if (current_index < completions->Length()) {
-    Local<Context> context(isolate->GetCurrentContext());
-    Local<Integer> index = Integer::New(isolate, current_index);
-    Local<Value> str_obj = completions->Get(context, index).ToLocalChecked();
-    current_index++;
-    String::Utf8Value str(str_obj);
-    return strdup(*str);
-  } else {
-    current_completions.Reset();
-    return NULL;
-  }
-}
-#endif  // V8_SHARED
-
-
-}  // namespace v8