src/snapshot-common.cc

// Copyright 2006-2008 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
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// The common functionality when building with or without snapshots.

#include "v8.h"

#include "api.h"
#include "serialize.h"
#include "snapshot.h"
#include "platform.h"

namespace v8 {
namespace internal {

bool Snapshot::Deserialize(const byte* content, int len) {
  SnapshotByteSource source(content, len);
  Deserializer deserializer(&source);
  return V8::Initialize(&deserializer);
}


bool Snapshot::Initialize(const char* snapshot_file) {
  if (snapshot_file) {
    int len;
    byte* str = ReadBytes(snapshot_file, &len);
    if (!str) return false;
    Deserialize(str, len);
    DeleteArray(str);
    return true;
  } else if (size_ > 0) {
    Deserialize(data_, size_);
    return true;
  }
  return false;
}


class FileByteSink : public SnapshotByteSink {
 public:
  explicit FileByteSink(const char* snapshot_file) {
    fp_ = OS::FOpen(snapshot_file, "wb");
    if (fp_ == NULL) {
      PrintF("Unable to write to snapshot file \"%s\"\n", snapshot_file);
      exit(1);
    }
  }
  virtual ~FileByteSink() {
    if (fp_ != NULL) {
      fclose(fp_);
    }
  }
  virtual void Put(int byte, const char* description) {
    if (fp_ != NULL) {
      fputc(byte, fp_);
    }
  }

 private:
  FILE* fp_;
};


bool Snapshot::WriteToFile(const char* snapshot_file) {
  FileByteSink file(snapshot_file);
  Serializer ser(&file);
  ser.Serialize();
  return true;
}



} }  // namespace v8::internal