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git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@890 d0cd1f9f-072b-0410-8dd7-cf729c803f20
76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
/**********************************************************************
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* File: serialis.h (Formerly serialmac.h)
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* Description: Inline routines and macros for serialisation functions
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* Author: Phil Cheatle
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* Created: Tue Oct 08 08:33:12 BST 1991
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*
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* (C) Copyright 1990, Hewlett-Packard Ltd.
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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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*
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**********************************************************************/
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#ifndef SERIALIS_H
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#define SERIALIS_H
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include "genericvector.h"
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/***********************************************************************
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QUOTE_IT MACRO DEFINITION
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===========================
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Replace <parm> with "<parm>". <parm> may be an arbitrary number of tokens
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***********************************************************************/
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#define QUOTE_IT( parm ) #parm
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namespace tesseract {
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// Simple file class. Only does input for now.
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// Allows for portable file input from memory.
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class TFile {
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public:
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TFile();
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// All the Open methods load the whole file into memory.
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// Opens a file with a supplied reader, or NULL to use the default.
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bool Open(const STRING& filename, FileReader reader);
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// From an existing memory buffer.
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bool Open(const char* data, int size);
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// From an open file and an end offset.
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bool Open(FILE* fp, inT64 end_offset);
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// Reads a line like fgets. Returns NULL on EOF, otherwise buffer.
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// Reads at most buffer_size bytes, including '\0' terminator, even if
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// the line is longer. Does nothing if buffer_size <= 0.
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char* FGets(char* buffer, int buffer_size);
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// Replicates fread, returning the number of items read.
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int FRead(void* buffer, int size, int count);
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// To use fscanf use FGets and sscanf.
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// Resets the TFile as if it has been Opened, but nothing read.
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void Rewind() {
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offset_ = 0;
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}
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private:
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// The number of bytes used so far.
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int offset_;
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// The buffered data from the file.
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GenericVector<char> data_;
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};
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} // namespace tesseract.
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#endif
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