Function ReadFdToString

Bcore/src/main/cpp/android-base/file.cpp:51–68

using namespace android_lkchan::base::utf8;

bool ReadFdToString(int fd, std::string* content) {
  content->clear();

  // Although original we had small files in mind, this code gets used for
  // very large files too, where the std::string growth heuristics might not
  // be suitable. https://code.google.com/p/android/issues/detail?id=258500.
  struct stat sb;
  if (fstat(fd, &sb) != -1 && sb.st_size > 0) {
    content->reserve(sb.st_size);
  }

  char buf[BUFSIZ];
  ssize_t n;
  while ((n = TEMP_FAILURE_RETRY(read(fd, &buf[0], sizeof(buf)))) > 0) {
    content->append(buf, n);
  }
  return (n == 0) ? true : false;
}

bool ReadFileToString(const std::string& path, std::string* content, bool follow_symlinks) {
  content->clear();