/usr/include/shogun/io/LibSVMFile.h is in libshogun-dev 3.2.0-7.5.
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) 2013 Evgeniy Andreev (gsomix)
* Written (W) 2010 Soeren Sonnenburg
*/
#ifndef __LIBSVMFILE_H__
#define __LIBSVMFILE_H__
#include <shogun/io/File.h>
#include <shogun/io/LineReader.h>
#include <shogun/io/Parser.h>
#include <shogun/lib/DelimiterTokenizer.h>
namespace shogun
{
/** @brief read sparse real valued features in svm light format
* e.g. -1 1:10.0 2:100.2 1000:1.3
* with -1 == (optional) label
* and dim 1 - value 10.0
* dim 2 - value 100.2
* dim 1000 - value 1.3
*/
class CLibSVMFile : public CFile
{
public:
/** default constructor */
CLibSVMFile();
/** constructor
*
* @param f already opened file
* @param name variable name (e.g. "x" or "/path/to/x")
*/
CLibSVMFile(FILE* f, 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")
*/
CLibSVMFile(const char* fname, char rw='r', const char* name=NULL);
/** destructor */
virtual ~CLibSVMFile();
/** @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(int8_t*& vector, int32_t& len) { };
virtual void get_vector(uint8_t*& vector, int32_t& len) { };
virtual void get_vector(char*& vector, int32_t& len) { };
virtual void get_vector(int32_t*& vector, int32_t& len) { };
virtual void get_vector(uint32_t*& vector, int32_t& len) { };
virtual void get_vector(float64_t*& vector, int32_t& len) { };
virtual void get_vector(float32_t*& vector, int32_t& len) { };
virtual void get_vector(floatmax_t*& vector, int32_t& len) { };
virtual void get_vector(int16_t*& vector, int32_t& len) { };
virtual void get_vector(uint16_t*& vector, int32_t& len) { };
virtual void get_vector(int64_t*& vector, int32_t& len) { };
virtual void get_vector(uint64_t*& vector, int32_t& len) { };
//@}
/** @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(
uint8_t*& matrix, int32_t& num_feat, int32_t& num_vec) { };
virtual void get_matrix(
int8_t*& matrix, int32_t& num_feat, int32_t& num_vec) { };
virtual void get_matrix(
char*& matrix, int32_t& num_feat, int32_t& num_vec) { };
virtual void get_matrix(
int32_t*& matrix, int32_t& num_feat, int32_t& num_vec) { };
virtual void get_matrix(
uint32_t*& matrix, int32_t& num_feat, int32_t& num_vec) { };
virtual void get_matrix(
int64_t*& matrix, int32_t& num_feat, int32_t& num_vec) { };
virtual void get_matrix(
uint64_t*& matrix, int32_t& num_feat, int32_t& num_vec) { };
virtual void get_matrix(
float32_t*& matrix, int32_t& num_feat, int32_t& num_vec) { };
virtual void get_matrix(
float64_t*& matrix, int32_t& num_feat, int32_t& num_vec) { };
virtual void get_matrix(
floatmax_t*& matrix, int32_t& num_feat, int32_t& num_vec) { };
virtual void get_matrix(
int16_t*& matrix, int32_t& num_feat, int32_t& num_vec) { };
virtual void get_matrix(
uint16_t*& matrix, int32_t& num_feat, int32_t& num_vec) { };
//@}
/** @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) { };
virtual void get_ndarray(
char*& array, int32_t*& dims, int32_t& num_dims) { };
virtual void get_ndarray(
int32_t*& array, int32_t*& dims, int32_t& num_dims) { };
virtual void get_ndarray(
float32_t*& array, int32_t*& dims, int32_t& num_dims) { };
virtual void get_ndarray(
float64_t*& array, int32_t*& dims, int32_t& num_dims){ };
virtual void get_ndarray(
int16_t*& array, int32_t*& dims, int32_t& num_dims){ };
virtual void get_ndarray(
uint16_t*& array, int32_t*& dims, int32_t& num_dims){ };
//@}
/** @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);
virtual void get_sparse_matrix(
SGSparseVector<uint8_t>*& matrix, int32_t& num_feat, int32_t& num_vec);
virtual void get_sparse_matrix(
SGSparseVector<int8_t>*& matrix, int32_t& num_feat, int32_t& num_vec);
virtual void get_sparse_matrix(
SGSparseVector<char>*& matrix, int32_t& num_feat, int32_t& num_vec);
virtual void get_sparse_matrix(
SGSparseVector<int32_t>*& matrix, int32_t& num_feat, int32_t& num_vec);
virtual void get_sparse_matrix(
SGSparseVector<uint32_t>*& matrix, int32_t& num_feat, int32_t& num_vec);
virtual void get_sparse_matrix(
SGSparseVector<int64_t>*& matrix, int32_t& num_feat, int32_t& num_vec);
virtual void get_sparse_matrix(
SGSparseVector<uint64_t>*& matrix, int32_t& num_feat, int32_t& num_vec);
virtual void get_sparse_matrix(
SGSparseVector<int16_t>*& matrix, int32_t& num_feat, int32_t& num_vec);
virtual void get_sparse_matrix(
SGSparseVector<uint16_t>*& matrix, int32_t& num_feat, int32_t& num_vec);
virtual void get_sparse_matrix(
SGSparseVector<float32_t>*& matrix, int32_t& num_feat, int32_t& num_vec);
virtual void get_sparse_matrix(
SGSparseVector<float64_t>*& matrix, int32_t& num_feat, int32_t& num_vec);
virtual void get_sparse_matrix(
SGSparseVector<floatmax_t>*& matrix, int32_t& num_feat, int32_t& num_vec);
//@}
/** @name Sparse Matrix Access Functions With Labels
*
* 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,
float64_t*& labels, bool load_labels=true);
virtual void get_sparse_matrix(
SGSparseVector<uint8_t>*& matrix, int32_t& num_feat, int32_t& num_vec,
float64_t*& labels, bool load_labels=true);
virtual void get_sparse_matrix(
SGSparseVector<int8_t>*& matrix, int32_t& num_feat, int32_t& num_vec,
float64_t*& labels, bool load_labels=true);
virtual void get_sparse_matrix(
SGSparseVector<char>*& matrix, int32_t& num_feat, int32_t& num_vec,
float64_t*& labels, bool load_labels=true);
virtual void get_sparse_matrix(
SGSparseVector<int32_t>*& matrix, int32_t& num_feat, int32_t& num_vec,
float64_t*& labels, bool load_labels=true);
virtual void get_sparse_matrix(
SGSparseVector<uint32_t>*& matrix, int32_t& num_feat, int32_t& num_vec,
float64_t*& labels, bool load_labels=true);
virtual void get_sparse_matrix(
SGSparseVector<int64_t>*& matrix, int32_t& num_feat, int32_t& num_vec,
float64_t*& labels, bool load_labels=true);
virtual void get_sparse_matrix(
SGSparseVector<uint64_t>*& matrix, int32_t& num_feat, int32_t& num_vec,
float64_t*& labels, bool load_labels=true);
virtual void get_sparse_matrix(
SGSparseVector<int16_t>*& matrix, int32_t& num_feat, int32_t& num_vec,
float64_t*& labels, bool load_labels=true);
virtual void get_sparse_matrix(
SGSparseVector<uint16_t>*& matrix, int32_t& num_feat, int32_t& num_vec,
float64_t*& labels, bool load_labels=true);
virtual void get_sparse_matrix(
SGSparseVector<float32_t>*& matrix, int32_t& num_feat, int32_t& num_vec,
float64_t*& labels, bool load_labels=true);
virtual void get_sparse_matrix(
SGSparseVector<float64_t>*& matrix, int32_t& num_feat, int32_t& num_vec,
float64_t*& labels, bool load_labels=true);
virtual void get_sparse_matrix(
SGSparseVector<floatmax_t>*& matrix, int32_t& num_feat, int32_t& num_vec,
float64_t*& labels, bool load_labels=true);
/** @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<uint8_t>*& strings, int32_t& num_str,
int32_t& max_string_len) { };
virtual void get_string_list(
SGString<int8_t>*& strings, int32_t& num_str,
int32_t& max_string_len) { };
virtual void get_string_list(
SGString<char>*& strings, int32_t& num_str,
int32_t& max_string_len) { };
virtual void get_string_list(
SGString<int32_t>*& strings, int32_t& num_str,
int32_t& max_string_len) { };
virtual void get_string_list(
SGString<uint32_t>*& strings, int32_t& num_str,
int32_t& max_string_len) { };
virtual void get_string_list(
SGString<int16_t>*& strings, int32_t& num_str,
int32_t& max_string_len) { };
virtual void get_string_list(
SGString<uint16_t>*& strings, int32_t& num_str,
int32_t& max_string_len) { };
virtual void get_string_list(
SGString<int64_t>*& strings, int32_t& num_str,
int32_t& max_string_len) { };
virtual void get_string_list(
SGString<uint64_t>*& strings, int32_t& num_str,
int32_t& max_string_len) { };
virtual void get_string_list(
SGString<float32_t>*& strings, int32_t& num_str,
int32_t& max_string_len) { };
virtual void get_string_list(
SGString<float64_t>*& strings, int32_t& num_str,
int32_t& max_string_len) { };
virtual void get_string_list(
SGString<floatmax_t>*& strings, int32_t& num_str,
int32_t& max_string_len) { };
//@}
/** 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 int8_t* vector, int32_t len) { };
virtual void set_vector(const uint8_t* vector, int32_t len) { };
virtual void set_vector(const char* vector, int32_t len) { };
virtual void set_vector(const int32_t* vector, int32_t len) { };
virtual void set_vector(const uint32_t* vector, int32_t len) { };
virtual void set_vector(const float32_t* vector, int32_t len) { };
virtual void set_vector(const float64_t* vector, int32_t len) { };
virtual void set_vector(const floatmax_t* vector, int32_t len) { };
virtual void set_vector(const int16_t* vector, int32_t len) { };
virtual void set_vector(const uint16_t* vector, int32_t len) { };
virtual void set_vector(const int64_t* vector, int32_t len) { };
virtual void set_vector(const uint64_t* vector, int32_t len) { };
//@}
/** @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 uint8_t* matrix, int32_t num_feat, int32_t num_vec) { };
virtual void set_matrix(
const int8_t* matrix, int32_t num_feat, int32_t num_vec) { };
virtual void set_matrix(
const char* matrix, int32_t num_feat, int32_t num_vec) { };
virtual void set_matrix(
const int32_t* matrix, int32_t num_feat, int32_t num_vec) { };
virtual void set_matrix(
const uint32_t* matrix, int32_t num_feat, int32_t num_vec) { };
virtual void set_matrix(
const int64_t* matrix, int32_t num_feat, int32_t num_vec) { };
virtual void set_matrix(
const uint64_t* matrix, int32_t num_feat, int32_t num_vec) { };
virtual void set_matrix(
const float32_t* matrix, int32_t num_feat, int32_t num_vec) { };
virtual void set_matrix(
const float64_t* matrix, int32_t num_feat, int32_t num_vec) { };
virtual void set_matrix(
const floatmax_t* matrix, int32_t num_feat, int32_t num_vec) { };
virtual void set_matrix(
const int16_t* matrix, int32_t num_feat, int32_t num_vec) { };
virtual void set_matrix(
const uint16_t* matrix, int32_t num_feat, int32_t num_vec) { };
//@}
/** @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);
virtual void set_sparse_matrix(
const SGSparseVector<uint8_t>* matrix, int32_t num_feat, int32_t num_vec);
virtual void set_sparse_matrix(
const SGSparseVector<int8_t>* matrix, int32_t num_feat, int32_t num_vec);
virtual void set_sparse_matrix(
const SGSparseVector<char>* matrix, int32_t num_feat, int32_t num_vec);
virtual void set_sparse_matrix(
const SGSparseVector<int32_t>* matrix, int32_t num_feat, int32_t num_vec);
virtual void set_sparse_matrix(
const SGSparseVector<uint32_t>* matrix, int32_t num_feat, int32_t num_vec);
virtual void set_sparse_matrix(
const SGSparseVector<int64_t>* matrix, int32_t num_feat, int32_t num_vec);
virtual void set_sparse_matrix(
const SGSparseVector<uint64_t>* matrix, int32_t num_feat, int32_t num_vec);
virtual void set_sparse_matrix(
const SGSparseVector<int16_t>* matrix, int32_t num_feat, int32_t num_vec);
virtual void set_sparse_matrix(
const SGSparseVector<uint16_t>* matrix, int32_t num_feat, int32_t num_vec);
virtual void set_sparse_matrix(
const SGSparseVector<float32_t>* matrix, int32_t num_feat, int32_t num_vec);
virtual void set_sparse_matrix(
const SGSparseVector<float64_t>* matrix, int32_t num_feat, int32_t num_vec);
virtual void set_sparse_matrix(
const SGSparseVector<floatmax_t>* matrix, int32_t num_feat, int32_t num_vec);
//@}
/** @name Sparse Matrix Access Functions With Labels
*
* 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,
const float64_t* labels);
virtual void set_sparse_matrix(
const SGSparseVector<uint8_t>* matrix, int32_t num_feat, int32_t num_vec,
const float64_t* labels);
virtual void set_sparse_matrix(
const SGSparseVector<int8_t>* matrix, int32_t num_feat, int32_t num_vec,
const float64_t* labels);
virtual void set_sparse_matrix(
const SGSparseVector<char>* matrix, int32_t num_feat, int32_t num_vec,
const float64_t* labels);
virtual void set_sparse_matrix(
const SGSparseVector<int32_t>* matrix, int32_t num_feat, int32_t num_vec,
const float64_t* labels);
virtual void set_sparse_matrix(
const SGSparseVector<uint32_t>* matrix, int32_t num_feat, int32_t num_vec,
const float64_t* labels);
virtual void set_sparse_matrix(
const SGSparseVector<int64_t>* matrix, int32_t num_feat, int32_t num_vec,
const float64_t* labels);
virtual void set_sparse_matrix(
const SGSparseVector<uint64_t>* matrix, int32_t num_feat, int32_t num_vec,
const float64_t* labels);
virtual void set_sparse_matrix(
const SGSparseVector<int16_t>* matrix, int32_t num_feat, int32_t num_vec,
const float64_t* labels);
virtual void set_sparse_matrix(
const SGSparseVector<uint16_t>* matrix, int32_t num_feat, int32_t num_vec,
const float64_t* labels);
virtual void set_sparse_matrix(
const SGSparseVector<float32_t>* matrix, int32_t num_feat, int32_t num_vec,
const float64_t* labels);
virtual void set_sparse_matrix(
const SGSparseVector<float64_t>* matrix, int32_t num_feat, int32_t num_vec,
const float64_t* labels);
virtual void set_sparse_matrix(
const SGSparseVector<floatmax_t>* matrix, int32_t num_feat, int32_t num_vec,
const float64_t* labels);
//@}
/** @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<uint8_t>* strings, int32_t num_str) { };
virtual void set_string_list(
const SGString<int8_t>* strings, int32_t num_str) { };
virtual void set_string_list(
const SGString<char>* strings, int32_t num_str) { };
virtual void set_string_list(
const SGString<int32_t>* strings, int32_t num_str) { };
virtual void set_string_list(
const SGString<uint32_t>* strings, int32_t num_str) { };
virtual void set_string_list(
const SGString<int16_t>* strings, int32_t num_str) { };
virtual void set_string_list(
const SGString<uint16_t>* strings, int32_t num_str) { };
virtual void set_string_list(
const SGString<int64_t>* strings, int32_t num_str) { };
virtual void set_string_list(
const SGString<uint64_t>* strings, int32_t num_str) { };
virtual void set_string_list(
const SGString<float32_t>* strings, int32_t num_str) { };
virtual void set_string_list(
const SGString<float64_t>* strings, int32_t num_str) { };
virtual void set_string_list(
const SGString<floatmax_t>* strings, int32_t num_str) { };
//@}
virtual const char* get_name() const { return "LibSVMFile"; }
private:
/** class initialization */
void init();
/** class initialization */
void init_with_defaults();
/** get number of lines */
int32_t get_num_lines();
private:
/** delimiter for index and data in sparse entries */
char m_delimiter;
/** object for reading lines from file */
CLineReader* m_line_reader;
/** parser of lines */
CParser* m_parser;
/** tokenizer for line_reader */
CDelimiterTokenizer* m_line_tokenizer;
/** delimiter for parsing lines */
CDelimiterTokenizer* m_whitespace_tokenizer;
/** delimiter for parsing sparse entries */
CDelimiterTokenizer* m_delimiter_tokenizer;
};
}
#endif /** __LIBSVMFILE_H__ */
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