Move V8 to external/v8
Change-Id: If68025d67453785a651c5dfb34fad298c16676a4
diff --git a/src/d8-readline.cc b/src/d8-readline.cc
new file mode 100644
index 0000000..34b7b60
--- /dev/null
+++ b/src/d8-readline.cc
@@ -0,0 +1,128 @@
+// Copyright 2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#include <cstdio> // NOLINT
+#include <readline/readline.h>
+#include <readline/history.h>
+
+
+#include "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 i::SmartPointer<char> Prompt(const char* prompt);
+ virtual bool Open();
+ virtual bool Close();
+ virtual void AddHistory(const char* str);
+ private:
+ static char** AttemptedCompletion(const char* text, int start, int end);
+ static char* CompletionGenerator(const char* text, int state);
+ static char kWordBreakCharacters[];
+};
+
+
+static ReadLineEditor read_line_editor;
+char ReadLineEditor::kWordBreakCharacters[] = {' ', '\t', '\n', '"',
+ '\\', '\'', '`', '@', '.', '>', '<', '=', ';', '|', '&', '{', '(',
+ '\0'};
+
+
+bool ReadLineEditor::Open() {
+ rl_initialize();
+ rl_attempted_completion_function = AttemptedCompletion;
+ rl_completer_word_break_characters = kWordBreakCharacters;
+ rl_bind_key('\t', rl_complete);
+ using_history();
+ return read_history(Shell::kHistoryFileName) == 0;
+}
+
+
+bool ReadLineEditor::Close() {
+ return write_history(Shell::kHistoryFileName) == 0;
+}
+
+
+i::SmartPointer<char> ReadLineEditor::Prompt(const char* prompt) {
+ char* result = readline(prompt);
+ return i::SmartPointer<char>(result);
+}
+
+
+void ReadLineEditor::AddHistory(const char* str) {
+ add_history(str);
+}
+
+
+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 Persistent<Array> current_completions;
+ if (state == 0) {
+ i::SmartPointer<char> full_text(i::StrNDup(rl_line_buffer, rl_point));
+ HandleScope scope;
+ Handle<Array> completions =
+ Shell::GetCompletions(String::New(text), String::New(*full_text));
+ current_completions = Persistent<Array>::New(completions);
+ current_index = 0;
+ }
+ if (current_index < current_completions->Length()) {
+ HandleScope scope;
+ Handle<Integer> index = Integer::New(current_index);
+ Handle<Value> str_obj = current_completions->Get(index);
+ current_index++;
+ String::Utf8Value str(str_obj);
+ return strdup(*str);
+ } else {
+ current_completions.Dispose();
+ current_completions.Clear();
+ return NULL;
+ }
+}
+
+
+} // namespace v8