| // Copyright (c) 2012 The WebM project authors. All Rights Reserved. |
| // |
| // Use of this source code is governed by a BSD-style license |
| // that can be found in the LICENSE file in the root of the source |
| // tree. An additional intellectual property rights grant can be found |
| // in the file PATENTS. All contributing project authors may |
| // be found in the AUTHORS file in the root of the source tree. |
| |
| #include "webvtt/vttreader.h" |
| |
| namespace libwebvtt { |
| |
| VttReader::VttReader() : file_(NULL) {} |
| |
| VttReader::~VttReader() { Close(); } |
| |
| int VttReader::Open(const char* filename) { |
| if (filename == NULL || file_ != NULL) |
| return -1; |
| |
| file_ = fopen(filename, "rb"); |
| if (file_ == NULL) |
| return -1; |
| |
| return 0; // success |
| } |
| |
| void VttReader::Close() { |
| if (file_) { |
| fclose(file_); |
| file_ = NULL; |
| } |
| } |
| |
| int VttReader::GetChar(char* c) { |
| if (c == NULL || file_ == NULL) |
| return -1; |
| |
| const int result = fgetc(file_); |
| if (result != EOF) { |
| *c = static_cast<char>(result); |
| return 0; // success |
| } |
| |
| if (ferror(file_)) |
| return -1; // error |
| |
| if (feof(file_)) |
| return 1; // EOF |
| |
| return -1; // weird |
| } |
| |
| } // namespace libwebvtt |
