Remove lineprocessor sample.

samples/lineprocessor.cc

Index: samples/lineprocessor.cc
diff --git a/samples/lineprocessor.cc b/samples/lineprocessor.cc
deleted file mode 100644
index 69bfab49ba64dd8f0f9c84792bad9ffe4124ace9..0000000000000000000000000000000000000000
--- a/samples/lineprocessor.cc
+++ /dev/null
@@ -1,385 +0,0 @@
-// Copyright 2012 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 <include/v8.h>
-
-#include <include/libplatform/libplatform.h>
-#include <include/v8-debug.h>
-
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-/**
- * This sample program should demonstrate certain aspects of debugging
- * standalone V8-based application.
- *
- * The program reads input stream, processes it line by line and print
- * the result to output. The actual processing is done by custom JavaScript
- * script. The script is specified with command line parameters.
- *
- * The main cycle of the program will sequentially read lines from standard
- * input, process them and print to standard output until input closes.
- * There are 2 possible configuration in regard to main cycle.
- *
- * 1. The main cycle is on C++ side. Program should be run with
- * --main-cycle-in-cpp option. Script must declare a function named
- * "ProcessLine". The main cycle in C++ reads lines and calls this function
- * for processing every time. This is a sample script:
-
-function ProcessLine(input_line) {
-  return ">>>" + input_line + "<<<";
-}
-
- *
- * 2. The main cycle is in JavaScript. Program should be run with
- * --main-cycle-in-js option. Script gets run one time at all and gets
- * API of 2 global functions: "read_line" and "print". It should read input
- * and print converted lines to output itself. This a sample script:
-
-while (true) {
-  var line = read_line();
-  if (!line) {
-    break;
-  }
-  var res = line + " | " + line;
-  print(res);
-}
- */
-
-enum MainCycleType {
-  CycleInCpp,
-  CycleInJs
-};
-
-const char* ToCString(const v8::String::Utf8Value& value);
-void ReportException(v8::Isolate* isolate, v8::TryCatch* handler);
-v8::Handle<v8::String> ReadFile(v8::Isolate* isolate, const char* name);
-v8::Handle<v8::String> ReadLine();
-
-void Print(const v8::FunctionCallbackInfo<v8::Value>& args);
-void ReadLine(const v8::FunctionCallbackInfo<v8::Value>& args);
-bool RunCppCycle(v8::Handle<v8::Script> script,
-                 v8::Local<v8::Context> context,
-                 bool report_exceptions);
-
-
-v8::Persistent<v8::Context> debug_message_context;
-
-int RunMain(int argc, char* argv[]) {
-  v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
-  v8::Isolate* isolate = v8::Isolate::New();
-  v8::Isolate::Scope isolate_scope(isolate);
-  v8::HandleScope handle_scope(isolate);
-
-  v8::Handle<v8::String> script_source;
-  v8::Handle<v8::Value> script_name;
-  int script_param_counter = 0;
-
-  MainCycleType cycle_type = CycleInCpp;
-
-  for (int i = 1; i < argc; i++) {
-    const char* str = argv[i];
-    if (strcmp(str, "-f") == 0) {
-      // Ignore any -f flags for compatibility with the other stand-
-      // alone JavaScript engines.
-      continue;
-    } else if (strcmp(str, "--main-cycle-in-cpp") == 0) {
-      cycle_type = CycleInCpp;
-    } else if (strcmp(str, "--main-cycle-in-js") == 0) {
-      cycle_type = CycleInJs;
-    } else if (strncmp(str, "--", 2) == 0) {
-      printf("Warning: unknown flag %s.\nTry --help for options\n", str);
-    } else if (strcmp(str, "-e") == 0 && i + 1 < argc) {
-      script_source = v8::String::NewFromUtf8(isolate, argv[i + 1]);
-      script_name = v8::String::NewFromUtf8(isolate, "unnamed");
-      i++;
-      script_param_counter++;
-    } else {
-      // Use argument as a name of file to load.
-      script_source = ReadFile(isolate, str);
-      script_name = v8::String::NewFromUtf8(isolate, str);
-      if (script_source.IsEmpty()) {
-        printf("Error reading '%s'\n", str);
-        return 1;
-      }
-      script_param_counter++;
-    }
-  }
-
-  if (script_param_counter == 0) {
-    printf("Script is not specified\n");
-    return 1;
-  }
-  if (script_param_counter != 1) {
-    printf("Only one script may be specified\n");
-    return 1;
-  }
-
-  // Create a template for the global object.
-  v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New(isolate);
-
-  // Bind the global 'print' function to the C++ Print callback.
-  global->Set(v8::String::NewFromUtf8(isolate, "print"),
-              v8::FunctionTemplate::New(isolate, Print));
-
-  if (cycle_type == CycleInJs) {
-    // Bind the global 'read_line' function to the C++ Print callback.
-    global->Set(v8::String::NewFromUtf8(isolate, "read_line"),
-                v8::FunctionTemplate::New(isolate, ReadLine));
-  }
-
-  // Create a new execution environment containing the built-in
-  // functions
-  v8::Handle<v8::Context> context = v8::Context::New(isolate, NULL, global);
-  // Enter the newly created execution environment.
-  v8::Context::Scope context_scope(context);
-
-  debug_message_context.Reset(isolate, context);
-
-  bool report_exceptions = true;
-
-  v8::Handle<v8::Script> script;
-  {
-    // Compile script in try/catch context.
-    v8::TryCatch try_catch;
-    v8::ScriptOrigin origin(script_name);
-    script = v8::Script::Compile(script_source, &origin);
-    if (script.IsEmpty()) {
-      // Print errors that happened during compilation.
-      if (report_exceptions)
-        ReportException(isolate, &try_catch);
-      return 1;
-    }
-  }
-
-  {
-    v8::TryCatch try_catch;
-
-    script->Run();
-    if (try_catch.HasCaught()) {
-      if (report_exceptions)
-        ReportException(isolate, &try_catch);
-      return 1;
-    }
-  }
-
-  if (cycle_type == CycleInCpp) {
-    bool res = RunCppCycle(script,
-                           isolate->GetCurrentContext(),
-                           report_exceptions);
-    return !res;
-  } else {
-    // All is already done.
-  }
-  return 0;
-}
-
-
-bool RunCppCycle(v8::Handle<v8::Script> script,
-                 v8::Local<v8::Context> context,
-                 bool report_exceptions) {
-  v8::Isolate* isolate = context->GetIsolate();
-
-  v8::Handle<v8::String> fun_name =
-      v8::String::NewFromUtf8(isolate, "ProcessLine");
-  v8::Handle<v8::Value> process_val = context->Global()->Get(fun_name);
-
-  // If there is no Process function, or if it is not a function,
-  // bail out
-  if (!process_val->IsFunction()) {
-    printf("Error: Script does not declare 'ProcessLine' global function.\n");
-    return 1;
-  }
-
-  // It is a function; cast it to a Function
-  v8::Handle<v8::Function> process_fun =
-      v8::Handle<v8::Function>::Cast(process_val);
-
-
-  while (!feof(stdin)) {
-    v8::HandleScope handle_scope(isolate);
-
-    v8::Handle<v8::String> input_line = ReadLine();
-    if (input_line == v8::Undefined(isolate)) {
-      continue;
-    }
-
-    const int argc = 1;
-    v8::Handle<v8::Value> argv[argc] = { input_line };
-
-    v8::Handle<v8::Value> result;
-    {
-      v8::TryCatch try_catch;
-      result = process_fun->Call(isolate->GetCurrentContext()->Global(),
-                                 argc, argv);
-      if (try_catch.HasCaught()) {
-        if (report_exceptions)
-          ReportException(isolate, &try_catch);
-        return false;
-      }
-    }
-    v8::String::Utf8Value str(result);
-    const char* cstr = ToCString(str);
-    printf("%s\n", cstr);
-  }
-
-  return true;
-}
-
-
-int main(int argc, char* argv[]) {
-  v8::V8::InitializeICU();
-  v8::Platform* platform = v8::platform::CreateDefaultPlatform();
-  v8::V8::InitializePlatform(platform);
-  v8::V8::Initialize();
-  int result = RunMain(argc, argv);
-  v8::V8::Dispose();
-  v8::V8::ShutdownPlatform();
-  delete platform;
-  return result;
-}
-
-
-// Extracts a C string from a V8 Utf8Value.
-const char* ToCString(const v8::String::Utf8Value& value) {
-  return *value ? *value : "<string conversion failed>";
-}
-
-
-// Reads a file into a v8 string.
-v8::Handle<v8::String> ReadFile(v8::Isolate* isolate, const char* name) {
-  FILE* file = fopen(name, "rb");
-  if (file == NULL) return v8::Handle<v8::String>();
-
-  fseek(file, 0, SEEK_END);
-  int size = ftell(file);
-  rewind(file);
-
-  char* chars = new char[size + 1];
-  chars[size] = '\0';
-  for (int i = 0; i < size;) {
-    int read = static_cast<int>(fread(&chars[i], 1, size - i, file));
-    i += read;
-  }
-  fclose(file);
-  v8::Handle<v8::String> result =
-      v8::String::NewFromUtf8(isolate, chars, v8::String::kNormalString, size);
-  delete[] chars;
-  return result;
-}
-
-
-void ReportException(v8::Isolate* isolate, v8::TryCatch* try_catch) {
-  v8::HandleScope handle_scope(isolate);
-  v8::String::Utf8Value exception(try_catch->Exception());
-  const char* exception_string = ToCString(exception);
-  v8::Handle<v8::Message> message = try_catch->Message();
-  if (message.IsEmpty()) {
-    // V8 didn't provide any extra information about this error; just
-    // print the exception.
-    printf("%s\n", exception_string);
-  } else {
-    // Print (filename):(line number): (message).
-    v8::String::Utf8Value filename(message->GetScriptOrigin().ResourceName());
-    const char* filename_string = ToCString(filename);
-    int linenum = message->GetLineNumber();
-    printf("%s:%i: %s\n", filename_string, linenum, exception_string);
-    // Print line of source code.
-    v8::String::Utf8Value sourceline(message->GetSourceLine());
-    const char* sourceline_string = ToCString(sourceline);
-    printf("%s\n", sourceline_string);
-    // Print wavy underline (GetUnderline is deprecated).
-    int start = message->GetStartColumn();
-    for (int i = 0; i < start; i++) {
-      printf(" ");
-    }
-    int end = message->GetEndColumn();
-    for (int i = start; i < end; i++) {
-      printf("^");
-    }
-    printf("\n");
-  }
-}
-
-
-// The callback that is invoked by v8 whenever the JavaScript 'print'
-// function is called.  Prints its arguments on stdout separated by
-// spaces and ending with a newline.
-void Print(const v8::FunctionCallbackInfo<v8::Value>& args) {
-  bool first = true;
-  for (int i = 0; i < args.Length(); i++) {
-    v8::HandleScope handle_scope(args.GetIsolate());
-    if (first) {
-      first = false;
-    } else {
-      printf(" ");
-    }
-    v8::String::Utf8Value str(args[i]);
-    const char* cstr = ToCString(str);
-    printf("%s", cstr);
-  }
-  printf("\n");
-  fflush(stdout);
-}
-
-
-// The callback that is invoked by v8 whenever the JavaScript 'read_line'
-// function is called. Reads a string from standard input and returns.
-void ReadLine(const v8::FunctionCallbackInfo<v8::Value>& args) {
-  if (args.Length() > 0) {
-    args.GetIsolate()->ThrowException(
-        v8::String::NewFromUtf8(args.GetIsolate(), "Unexpected arguments"));
-    return;
-  }
-  args.GetReturnValue().Set(ReadLine());
-}
-
-
-v8::Handle<v8::String> ReadLine() {
-  const int kBufferSize = 1024 + 1;
-  char buffer[kBufferSize];
-
-  char* res;
-  {
-    res = fgets(buffer, kBufferSize, stdin);
-  }
-  v8::Isolate* isolate = v8::Isolate::GetCurrent();
-  if (res == NULL) {
-    v8::Handle<v8::Primitive> t = v8::Undefined(isolate);
-    return v8::Handle<v8::String>::Cast(t);
-  }
-  // Remove newline char
-  for (char* pos = buffer; *pos != '\0'; pos++) {
-    if (*pos == '\n') {
-      *pos = '\0';
-      break;
-    }
-  }
-  return v8::String::NewFromUtf8(isolate, buffer);
-}