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