| John Park | 33858a3 | 2018-09-28 23:05:48 -0700 | [diff] [blame^] | 1 | #include "aos/util/file.h" |
| Brian Silverman | 61175fb | 2016-03-13 15:35:56 -0400 | [diff] [blame] | 2 | |
| 3 | #include <fcntl.h> |
| 4 | #include <unistd.h> |
| 5 | |
| John Park | 33858a3 | 2018-09-28 23:05:48 -0700 | [diff] [blame^] | 6 | #include "aos/scoped/scoped_fd.h" |
| Brian Silverman | 61175fb | 2016-03-13 15:35:56 -0400 | [diff] [blame] | 7 | |
| 8 | namespace aos { |
| 9 | namespace util { |
| 10 | |
| 11 | ::std::string ReadFileToStringOrDie(const ::std::string &filename) { |
| 12 | ::std::string r; |
| 13 | ScopedFD fd(PCHECK(open(filename.c_str(), O_RDONLY))); |
| 14 | while (true) { |
| 15 | char buffer[1024]; |
| 16 | const ssize_t result = read(fd.get(), buffer, sizeof(buffer)); |
| 17 | if (result < 0) { |
| 18 | PLOG(FATAL, "reading from %s", filename.c_str()); |
| 19 | } else if (result == 0) { |
| 20 | break; |
| 21 | } |
| 22 | r.append(buffer, result); |
| 23 | } |
| 24 | return r; |
| 25 | } |
| 26 | |
| 27 | } // namespace util |
| 28 | } // namespace aos |