/usr/include/shogun/io/File.h is in libshogun-dev 3.2.0-7.3build4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Written (W) 1999-2009 Soeren Sonnenburg
* Copyright (C) 1999-2009 Fraunhofer Institute FIRST and Max-Planck-Society
* Copyright (C) 2010 Berlin Institute of Technology
*/
#ifndef __FILE_H__
#define __FILE_H__
#include <stdio.h>
#include <shogun/base/SGObject.h>
#include <shogun/lib/DataType.h>
namespace shogun
{
template <class ST> class SGString;
template <class ST> class SGSparseVector;
template <class ST> struct SGSparseVectorEntry;
/** @brief A File access base class.
*
* A file is assumed to be a seekable raw data stream.
*
* \sa CCSVFile
* \sa CBinaryFile
* \sa CHDF5File
*
*/
class CFile : public CSGObject
{
public:
/** default constructor */
CFile();
/** constructor
*
* @param f already opened file
* @param name variable name (e.g. "x" or "/path/to/x")
*/
CFile(FILE* f, const char* name=NULL);
/** constructor
*
* @param fd already opened file descriptor
* @param mode mode, 'r' or 'w'
* @param name variable name (e.g. "x" or "/path/to/x")
*/
CFile(int fd, const char* mode, const char* name=NULL);
/** constructor
*
* @param fname filename to open
* @param rw mode, 'r' or 'w'
* @param name variable name (e.g. "x" or "/path/to/x")
*/
CFile(const char* fname, char rw='r', const char* name=NULL);
/** default destructor */
virtual ~CFile();
/** close */
void close()
{
SG_FREE(variable_name);
SG_FREE(filename);
if (file)
fclose(file);
variable_name=NULL;
filename=NULL;
file=NULL;
}
/** get the file descriptor
*
* @return FILE ptr
*/
FILE* get_file_descriptor()
{
return file;
}
/** set the path to the variable to be accessed
*
* only supported by some file interfaces like CHDF5File
*
* @param name variable path & name
*/
void set_variable_name(const char* name);
/** get the path to the variable to be accessed
*
* only supported by some file interfaces like CHDF5File
*
* @return name variable path & name
*/
char* get_variable_name();
/** get data type of current element */
/*virtual DataType get_data_type()=0;*/
/** vector access functions */
/*virtual void get_vector(void*& vector, int32_t& len, DataType& dtype);*/
/** @name Vector Access Functions
*
* Functions to access vectors of one of the several base data types.
* These functions are used when loading vectors from e.g. file
* and return the vector and its length len by reference
*/
//@{
virtual void get_vector(bool*& vector, int32_t& len);
virtual void get_vector(int8_t*& vector, int32_t& len)=0;
virtual void get_vector(uint8_t*& vector, int32_t& len)=0;
virtual void get_vector(char*& vector, int32_t& len)=0;
virtual void get_vector(int32_t*& vector, int32_t& len)=0;
virtual void get_vector(uint32_t*& vector, int32_t& len)=0;
virtual void get_vector(float64_t*& vector, int32_t& len)=0;
virtual void get_vector(float32_t*& vector, int32_t& len)=0;
virtual void get_vector(floatmax_t*& vector, int32_t& len)=0;
virtual void get_vector(int16_t*& vector, int32_t& len)=0;
virtual void get_vector(uint16_t*& vector, int32_t& len)=0;
virtual void get_vector(int64_t*& vector, int32_t& len)=0;
virtual void get_vector(uint64_t*& vector, int32_t& len)=0;
//@}
/** matrix access functions */
/*virtual void get_matrix(
void*& matrix, int32_t& num_feat, int32_t& num_vec, DataType& dtype);*/
/** @name Matrix Access Functions
*
* Functions to access matrices of one of the several base data types.
* These functions are used when loading matrices from e.g. file
* and return the matrices and its dimensions num_feat and num_vec
* by reference
*/
//@{
virtual void get_matrix(
bool*& matrix, int32_t& num_feat, int32_t& num_vec);
virtual void get_matrix(
uint8_t*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_matrix(
int8_t*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_matrix(
char*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_matrix(
int32_t*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_matrix(
uint32_t*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_matrix(
int64_t*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_matrix(
uint64_t*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_matrix(
float32_t*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_matrix(
float64_t*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_matrix(
floatmax_t*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_matrix(
int16_t*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_matrix(
uint16_t*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
//@}
/** nd-array access functions */
/*virtual void get_ndarray(
void*& array, int32_t*& dims, int32_t& num_dims, DataType& dtype);*/
/** @name N-Dimensional Array Access Functions
*
* Functions to access n-dimensional arrays of one of the several base
* data types. These functions are used when loading n-dimensional arrays
* from e.g. file and return the them and its dimensions dims and num_dims
* by reference
*/
//@{
virtual void get_ndarray(
uint8_t*& array, int32_t*& dims, int32_t& num_dims)=0;
virtual void get_ndarray(
char*& array, int32_t*& dims, int32_t& num_dims)=0;
virtual void get_ndarray(
int32_t*& array, int32_t*& dims, int32_t& num_dims)=0;
virtual void get_ndarray(
float32_t*& array, int32_t*& dims, int32_t& num_dims)=0;
virtual void get_ndarray(
float64_t*& array, int32_t*& dims, int32_t& num_dims)=0;
virtual void get_ndarray(
int16_t*& array, int32_t*& dims, int32_t& num_dims)=0;
virtual void get_ndarray(
uint16_t*& array, int32_t*& dims, int32_t& num_dims)=0;
//@}
//
/** @name Sparse Vector Access Functions
*
* Functions to access sparse matrices of one of the several base data types.
* These functions are used when loading sparse vectors from e.g. file
* and return the sparse vectors and its length num_feat by reference
*/
//@{
virtual void get_sparse_vector(
SGSparseVectorEntry<bool>*& entries, int32_t& num_feat);
virtual void get_sparse_vector(
SGSparseVectorEntry<uint8_t>*& entries, int32_t& num_feat);
virtual void get_sparse_vector(
SGSparseVectorEntry<int8_t>*& entries, int32_t& num_feat);
virtual void get_sparse_vector(
SGSparseVectorEntry<char>*& entries, int32_t& num_feat);
virtual void get_sparse_vector(
SGSparseVectorEntry<int32_t>*& entries, int32_t& num_feat);
virtual void get_sparse_vector(
SGSparseVectorEntry<uint32_t>*& entries, int32_t& num_feat);
virtual void get_sparse_vector(
SGSparseVectorEntry<int64_t>*& entries, int32_t& num_feat);
virtual void get_sparse_vector(
SGSparseVectorEntry<uint64_t>*& entries, int32_t& num_feat);
virtual void get_sparse_vector(
SGSparseVectorEntry<int16_t>*& entries, int32_t& num_feat);
virtual void get_sparse_vector(
SGSparseVectorEntry<uint16_t>*& entries, int32_t& num_feat);
virtual void get_sparse_vector(
SGSparseVectorEntry<float32_t>*& entries, int32_t& num_feat);
virtual void get_sparse_vector(
SGSparseVectorEntry<float64_t>*& entries, int32_t& num_feat);
virtual void get_sparse_vector(
SGSparseVectorEntry<floatmax_t>*& entries, int32_t& num_feat);
//@}
/** @name Sparse Matrix Access Functions
*
* Functions to access sparse matrices of one of the several base data types.
* These functions are used when loading sparse matrices from e.g. file
* and return the sparse matrices and its dimensions num_feat and num_vec
* by reference
*/
//@{
virtual void get_sparse_matrix(
SGSparseVector<bool>*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_sparse_matrix(
SGSparseVector<uint8_t>*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_sparse_matrix(
SGSparseVector<int8_t>*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_sparse_matrix(
SGSparseVector<char>*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_sparse_matrix(
SGSparseVector<int32_t>*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_sparse_matrix(
SGSparseVector<uint32_t>*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_sparse_matrix(
SGSparseVector<int64_t>*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_sparse_matrix(
SGSparseVector<uint64_t>*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_sparse_matrix(
SGSparseVector<int16_t>*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_sparse_matrix(
SGSparseVector<uint16_t>*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_sparse_matrix(
SGSparseVector<float32_t>*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_sparse_matrix(
SGSparseVector<float64_t>*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
virtual void get_sparse_matrix(
SGSparseVector<floatmax_t>*& matrix, int32_t& num_feat, int32_t& num_vec)=0;
//@}
/** @name String Access Functions
*
* Functions to access strings of one of the several base data types.
* These functions are used when loading variable length datatypes
* from e.g. file and return the strings and their number
* by reference
*/
//@{
virtual void get_string_list(
SGString<bool>*& strings, int32_t& num_str,
int32_t& max_string_len);
virtual void get_string_list(
SGString<uint8_t>*& strings, int32_t& num_str,
int32_t& max_string_len)=0;
virtual void get_string_list(
SGString<int8_t>*& strings, int32_t& num_str,
int32_t& max_string_len)=0;
virtual void get_string_list(
SGString<char>*& strings, int32_t& num_str,
int32_t& max_string_len)=0;
virtual void get_string_list(
SGString<int32_t>*& strings, int32_t& num_str,
int32_t& max_string_len)=0;
virtual void get_string_list(
SGString<uint32_t>*& strings, int32_t& num_str,
int32_t& max_string_len)=0;
virtual void get_string_list(
SGString<int16_t>*& strings, int32_t& num_str,
int32_t& max_string_len)=0;
virtual void get_string_list(
SGString<uint16_t>*& strings, int32_t& num_str,
int32_t& max_string_len)=0;
virtual void get_string_list(
SGString<int64_t>*& strings, int32_t& num_str,
int32_t& max_string_len)=0;
virtual void get_string_list(
SGString<uint64_t>*& strings, int32_t& num_str,
int32_t& max_string_len)=0;
virtual void get_string_list(
SGString<float32_t>*& strings, int32_t& num_str,
int32_t& max_string_len)=0;
virtual void get_string_list(
SGString<float64_t>*& strings, int32_t& num_str,
int32_t& max_string_len)=0;
virtual void get_string_list(
SGString<floatmax_t>*& strings, int32_t& num_str,
int32_t& max_string_len)=0;
//@}
/** vector access functions */
/*virtual void get_vector(void*& vector, int32_t& len, DataType& dtype);*/
/** @name Vector Access Functions
*
* Functions to access vectors of one of the several base data types.
* These functions are used when writing vectors of length len
* to e.g. a file
*/
//@{
virtual void set_vector(const bool* vector, int32_t len);
virtual void set_vector(const int8_t* vector, int32_t len)=0;
virtual void set_vector(const uint8_t* vector, int32_t len)=0;
virtual void set_vector(const char* vector, int32_t len)=0;
virtual void set_vector(const int32_t* vector, int32_t len)=0;
virtual void set_vector(const uint32_t* vector, int32_t len)=0;
virtual void set_vector(const float32_t* vector, int32_t len)=0;
virtual void set_vector(const float64_t* vector, int32_t len)=0;
virtual void set_vector(const floatmax_t* vector, int32_t len)=0;
virtual void set_vector(const int16_t* vector, int32_t len)=0;
virtual void set_vector(const uint16_t* vector, int32_t len)=0;
virtual void set_vector(const int64_t* vector, int32_t len)=0;
virtual void set_vector(const uint64_t* vector, int32_t len)=0;
//@}
/** @name Matrix Access Functions
*
* Functions to access matrices of one of the several base data types.
* These functions are used when writing matrices of num_feat rows and
* num_vec columns to e.g. a file
*/
//@{
virtual void set_matrix(
const bool* matrix, int32_t num_feat, int32_t num_vec);
virtual void set_matrix(
const uint8_t* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_matrix(
const int8_t* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_matrix(
const char* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_matrix(
const int32_t* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_matrix(
const uint32_t* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_matrix(
const int64_t* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_matrix(
const uint64_t* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_matrix(
const float32_t* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_matrix(
const float64_t* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_matrix(
const floatmax_t* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_matrix(
const int16_t* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_matrix(
const uint16_t* matrix, int32_t num_feat, int32_t num_vec)=0;
//@}
//
/** @name Sparse Vector Access Functions
*
* Functions to access sparse vectors of one of the several base data types.
* These functions are used when writing sparse vectors of num_feat entries
* to e.g. a file
*/
//@{
virtual void set_sparse_vector(
const SGSparseVectorEntry<bool>* entries, int32_t num_feat);
virtual void set_sparse_vector(
const SGSparseVectorEntry<uint8_t>* entries, int32_t num_feat);
virtual void set_sparse_vector(
const SGSparseVectorEntry<int8_t>* entries, int32_t num_feat);
virtual void set_sparse_vector(
const SGSparseVectorEntry<char>* entries, int32_t num_feat);
virtual void set_sparse_vector(
const SGSparseVectorEntry<int32_t>* entries, int32_t num_feat);
virtual void set_sparse_vector(
const SGSparseVectorEntry<uint32_t>* entries, int32_t num_feat);
virtual void set_sparse_vector(
const SGSparseVectorEntry<int64_t>* entries, int32_t num_feat);
virtual void set_sparse_vector(
const SGSparseVectorEntry<uint64_t>* entries, int32_t num_feat);
virtual void set_sparse_vector(
const SGSparseVectorEntry<int16_t>* entries, int32_t num_feat);
virtual void set_sparse_vector(
const SGSparseVectorEntry<uint16_t>* entries, int32_t num_feat);
virtual void set_sparse_vector(
const SGSparseVectorEntry<float32_t>* entries, int32_t num_feat);
virtual void set_sparse_vector(
const SGSparseVectorEntry<float64_t>* entries, int32_t num_feat);
virtual void set_sparse_vector(
const SGSparseVectorEntry<floatmax_t>* entries, int32_t num_feat);
//@}
/** @name Sparse Matrix Access Functions
*
* Functions to access sparse matrices of one of the several base data types.
* These functions are used when writing sparse matrices of num_feat rows and
* num_vec columns to e.g. a file
*/
//@{
virtual void set_sparse_matrix(
const SGSparseVector<bool>* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_sparse_matrix(
const SGSparseVector<uint8_t>* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_sparse_matrix(
const SGSparseVector<int8_t>* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_sparse_matrix(
const SGSparseVector<char>* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_sparse_matrix(
const SGSparseVector<int32_t>* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_sparse_matrix(
const SGSparseVector<uint32_t>* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_sparse_matrix(
const SGSparseVector<int64_t>* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_sparse_matrix(
const SGSparseVector<uint64_t>* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_sparse_matrix(
const SGSparseVector<int16_t>* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_sparse_matrix(
const SGSparseVector<uint16_t>* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_sparse_matrix(
const SGSparseVector<float32_t>* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_sparse_matrix(
const SGSparseVector<float64_t>* matrix, int32_t num_feat, int32_t num_vec)=0;
virtual void set_sparse_matrix(
const SGSparseVector<floatmax_t>* matrix, int32_t num_feat, int32_t num_vec)=0;
//@}
/** @name String Access Functions
*
* Functions to access strings of one of the several base data types.
* These functions are used when writing variable length datatypes
* like strings to a file. Here num_str denotes the number of strings
* and strings is a pointer to a string structure.
*/
//@{
virtual void set_string_list(
const SGString<bool>* strings, int32_t num_str);
virtual void set_string_list(
const SGString<uint8_t>* strings, int32_t num_str)=0;
virtual void set_string_list(
const SGString<int8_t>* strings, int32_t num_str)=0;
virtual void set_string_list(
const SGString<char>* strings, int32_t num_str)=0;
virtual void set_string_list(
const SGString<int32_t>* strings, int32_t num_str)=0;
virtual void set_string_list(
const SGString<uint32_t>* strings, int32_t num_str)=0;
virtual void set_string_list(
const SGString<int16_t>* strings, int32_t num_str)=0;
virtual void set_string_list(
const SGString<uint16_t>* strings, int32_t num_str)=0;
virtual void set_string_list(
const SGString<int64_t>* strings, int32_t num_str)=0;
virtual void set_string_list(
const SGString<uint64_t>* strings, int32_t num_str)=0;
virtual void set_string_list(
const SGString<float32_t>* strings, int32_t num_str)=0;
virtual void set_string_list(
const SGString<float64_t>* strings, int32_t num_str)=0;
virtual void set_string_list(
const SGString<floatmax_t>* strings, int32_t num_str)=0;
//@}
/** @return object name */
virtual const char* get_name() const { return "File"; }
/** read whole file in memory
*
* @param fname - file name
* @param len - length of file (returned by reference)
* @return buffer to read file - needs to be freed with SG_FREE
*/
static char* read_whole_file(char* fname, size_t& len);
protected:
/** file object */
FILE* file;
/** task */
char task;
/** name of the handled file */
char* filename;
/** variable name / path to variable */
char* variable_name;
};
}
#endif // __FILE_H__
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