mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-12-19 11:58:15 +08:00
46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
// Copyright 2008 Google Inc.
|
|
// All Rights Reserved.
|
|
// Author: ahmadab@google.com (Ahmad Abdulkader)
|
|
//
|
|
// input_file_buffer.h: Declarations of a class for an object that
|
|
// represents an input file buffer.
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include <string>
|
|
#include "input_file_buffer.h"
|
|
|
|
namespace tesseract {
|
|
// default and only contsructor
|
|
InputFileBuffer::InputFileBuffer(const string &file_name)
|
|
: file_name_(file_name) {
|
|
fp_ = NULL;
|
|
}
|
|
|
|
// virtual destructor
|
|
InputFileBuffer::~InputFileBuffer() {
|
|
if (fp_ != NULL) {
|
|
fclose(fp_);
|
|
}
|
|
}
|
|
|
|
// Read the specified number of bytes to the specified input buffer
|
|
int InputFileBuffer::Read(void *buffer, int bytes_to_read) {
|
|
// open the file if necessary
|
|
if (fp_ == NULL) {
|
|
fp_ = fopen(file_name_.c_str(), "rb");
|
|
if (fp_ == NULL) {
|
|
return 0;
|
|
}
|
|
}
|
|
return fread(buffer, 1, bytes_to_read, fp_);
|
|
}
|
|
}
|