/usr/include/linbox/util/formats/matrix-market.h is in liblinbox-dev 1.3.2-1.1build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 | /* Copyright (C) 2005 LinBox
* Written by Dan Roche
*
*
*
* ========LICENCE========
* This file is part of the library LinBox.
*
* LinBox is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* ========LICENCE========
*/
#ifndef __LINBOX_format_matrix_market_H
#define __LINBOX_format_matrix_market_H
/* matrix-market-array.h
* MatrixStreamReader specialization for matrices in the MatrixMarket coordinate
* format.
*/
#include <string>
#include <sstream>
#include "linbox/util/matrix-stream.h"
#if 0
namespace LinBox__FORMAT_MATRIX_MARKET_H
{
static const char* name = "Matrix Market Format";
static const char* shortname = "mm";
}
#endif
namespace LinBox
{
#ifndef __LINBOX_integer_H
class integer;
#endif
#if 1 /* Unused */
bool equalCaseInsensitive(const std::string s1, const char* s2)
{
int len = int(s1.size());
int counter = 0;
while( counter < len && s2[counter] != '\0' &&
toupper(s1[(size_t)counter]) == toupper(s2[counter]) ) {
++counter;
}
return( counter == len && s2[counter] == '\0' );
}
#endif
template<class Field>
class MatrixMarketReader : public MatrixStreamReader<Field> {
public:
typedef typename MatrixStreamReader<Field>::Element Element;
private:
int entriesLeft;
size_t currentCol, currentRow;
bool array;
bool pattern;
bool symmetric;
MatrixStreamError readHeader()
{
//Skip comments
this->ms->readWhiteSpace();
while( !this->sin->eof() && this->sin->peek() == '%' ) {
char c;
while( this->sin->get(c) ) {
if( c == '\n' || c == '\r' ) {
this->sin->putback(c);
break;
}
}
this->ms->readWhiteSpace();
}
*(this->sin) >> this->_m;
this->ms->readWhiteSpace();
*(this->sin) >> this->_n;
this->ms->readWhiteSpace();
if( !array ) {
*(this->sin) >> entriesLeft;
this->ms->readWhiteSpace();
}
if( this->sin->eof() ) return END_OF_FILE;
if( !this->sin->good() ) return BAD_FORMAT;
this->knowM = this->knowN = true;
currentCol = currentRow = 1;
if( symmetric && (this->_m != this->_n) ) return BAD_FORMAT;
if( this->_m < 1 || this->_n < 1 ) return BAD_FORMAT;
if( !array && (entriesLeft < 0 ||
(size_t)entriesLeft > this->_m*this->_n ) )
return BAD_FORMAT;
return GOOD;
}
protected:
MatrixStreamError nextTripleImpl( size_t& i, size_t& j, Element& v )
{
if( currentCol == 0 && currentRow == 0 ) {
MatrixStreamError mse = readHeader();
if( mse != GOOD ) return mse;
}
if( array ) {
if( currentCol == this->_n+1 ) return END_OF_MATRIX;
j = currentCol;
i = currentRow;
if( ++currentRow == this->_m+1 ) {
++currentCol;
currentRow = (symmetric ? currentCol : 1);
}
}
else {
if( --entriesLeft < 0 ) return END_OF_MATRIX;
this->ms->readWhiteSpace();
*(this->sin) >> i;
if( this->sin->eof() ) return END_OF_FILE;
if( !this->sin->good() ) return BAD_FORMAT;
this->ms->readWhiteSpace();
*(this->sin) >> j;
if( this->sin->eof() ) return END_OF_FILE;
if( !this->sin->good() ) return BAD_FORMAT;
}
if( pattern ) this->ms->getField().init(v,(integer)1);
else {
this->ms->readWhiteSpace();
this->ms->getField().read(*(this->sin),v);
if( this->sin->eof() ) return END_OF_FILE;
if( !this->sin->good() ) return BAD_FORMAT;
}
--i;
--j;
if( i >= this->_m || j >= this->_n )
return BAD_FORMAT;
if( symmetric && (i != j) ) this->saveTriple(j,i,v);
return GOOD;
}
#if 1 /* Unused */
MatrixStreamError initImpl( const char* firstLine )
{
std::string st(firstLine);
std::stringstream stin(st);
if( stin.get() != '%' || stin.get() != '%' )
return NO_FORMAT;
if( !stin.good() ) return NO_FORMAT;
std::string s;
stin >> s;
if( !stin.good() ) return NO_FORMAT;
if( !equalCaseInsensitive(s,"MatrixMarket") ) return NO_FORMAT;
stin >> s;
if( !stin.good() ) return BAD_FORMAT;
if( !equalCaseInsensitive(s,"matrix") ) return BAD_FORMAT;
stin >> s;
if( !stin.good() ) return BAD_FORMAT;
if( equalCaseInsensitive(s,"array") ) array = true;
else if( equalCaseInsensitive(s,"coordinate") ) array = false;
else return BAD_FORMAT;
stin >> s;
if( !stin.good() ) return BAD_FORMAT;
pattern = equalCaseInsensitive(s,"pattern");
stin >> s;
if( !stin.eof() && !stin.good() ) return BAD_FORMAT;
if( equalCaseInsensitive(s,"symmetric") ) symmetric = true;
else if( equalCaseInsensitive(s,"general") ) symmetric = false;
else return BAD_FORMAT;
stin >> s;
if( !stin.eof() ) return BAD_FORMAT;
if( array && pattern ) return BAD_FORMAT;
currentRow = currentCol = 0;
return GOOD;
}
#endif
public:
MatrixMarketReader()
{
entriesLeft = -1;
currentCol = currentRow = 0;
}
bool isSparse() const
{
return !array;
}
const char* getName() const
{
return "Matrix Market Format";
}// LinBox__FORMAT_MATRIX_MARKET_H::name;
const char* shortName() const
{
return "mm"; // LinBox__FORMAT_MATRIX_MARKET_H::shortname;
}
};
}
#endif //__LINBOX_format_matrix_market_H
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