DGtal  1.0.0
TableReader.ih
1 /**
2  * This program is free software: you can redistribute it and/or modify
3  * it under the terms of the GNU Lesser General Public License as
4  * published by the Free Software Foundation, either version 3 of the
5  * License, or (at your option) any later version.
6  *
7  * This program is distributed in the hope that it will be useful,
8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10  * GNU General Public License for more details.
11  *
12  * You should have received a copy of the GNU General Public License
13  * along with this program. If not, see <http://www.gnu.org/licenses/>.
14  *
15  **/
16 
17 /**
18  * @file TableReader.ih
19  * @author Bertrand Kerautret (\c kerautre@loria.fr )
20  * LORIA (CNRS, UMR 7503), University of Nancy, France
21  *
22  * @date 2013/11/30
23  *
24  * Implementation of inline methods defined in TableReader.h
25  *
26  * This file is part of the DGtal library.
27  */
28 
29 ///////////////////////////////////////////////////////////////////////////////
30 // IMPLEMENTATION of inline methods.
31 ///////////////////////////////////////////////////////////////////////////////
32 
33 //////////////////////////////////////////////////////////////////////////////
34 #include <cstdlib>
35 #include <sstream>
36 #include <fstream>
37 //////////////////////////////////////////////////////////////////////////////
38 
39 
40 
41 ///////////////////////////////////////////////////////////////////////////////
42 // Implementation of inline methods //
43 
44 
45 
46 
47 template<typename TQuantity>
48 inline
49 std::vector<TQuantity>
50 DGtal::TableReader<TQuantity>::getColumnElementsFromFile (const std::string &aFilename, unsigned int aPosition)
51 {
52  std::ifstream infile;
53  infile.open (aFilename.c_str(), std::ifstream::in);
54  return TableReader<TQuantity>::getColumnElementsFromInputStream(infile, aPosition);
55 }
56 
57 template <typename TQuantity>
58 inline std::vector<TQuantity>
59 DGtal::TableReader<TQuantity>::getColumnElementsFromInputStream(
60 std::istream & in, unsigned int aPosition )
61 {
62  std::vector<TQuantity> vectResult;
63  std::string str;
64  getline(in, str );
65  while ( in.good() )
66  {
67  if ( ( str != "" ) && ( str[ 0 ] != '#' ) )
68  {
69  std::istringstream in_str( str );
70  std::string wordVal;
71  TQuantity val;
72  bool found = false;
73  unsigned int idx = 0;
74  while ( in_str.good() && !found )
75  {
76  std::operator>>( in_str, wordVal );
77  std::istringstream word_str( wordVal );
78  word_str >> val;
79  bool isOK = !word_str.fail();
80  if ( isOK && idx == aPosition )
81  {
82  found = true;
83  vectResult.push_back( val );
84  }
85  idx++;
86  }
87  }
88  getline( in, str );
89  }
90  return vectResult;
91 }
92 
93 template <typename TQuantity>
94 inline std::vector<std::vector<TQuantity>>
95 DGtal::TableReader<TQuantity>::getLinesElementsFromFile(
96 const std::string & aFilename )
97 {
98  std::ifstream infile;
99  infile.open( aFilename.c_str(), std::ifstream::in );
100  return DGtal::TableReader<TQuantity>::getLinesElementsFromInputStream(
101  infile );
102 }
103 
104 template <typename TQuantity>
105 inline std::vector<std::vector<TQuantity>>
106 DGtal::TableReader<TQuantity>::getLinesElementsFromInputStream(
107 std::istream & in )
108 {
109  std::vector<std::vector<TQuantity>> vectResult;
110  std::string str;
111  getline( in, str );
112  while ( in.good() )
113  {
114  std::vector<TQuantity> aLine;
115  if ( ( str != "" ) && ( str[ 0 ] != '#' ) )
116  {
117  std::istringstream in_str( str );
118  std::string wordVal;
119  TQuantity val;
120  while ( in_str.good() )
121  {
122  std::operator>>( in_str, wordVal );
123  std::istringstream word_str( wordVal );
124  word_str >> val;
125  if ( !word_str.fail() )
126  {
127  aLine.push_back( val );
128  }
129  }
130  vectResult.push_back( aLine );
131  }
132  getline( in, str );
133  }
134  return vectResult;
135 }
136 
137 // //
138 ///////////////////////////////////////////////////////////////////////////////