FreeFOAM The Cross-Platform CFD Toolkit
longLongIO.C
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3  \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
4  \\ / O peration |
5  \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
6  \\/ M anipulation |
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8 License
9  This file is part of OpenFOAM.
10 
11  OpenFOAM is free software: you can redistribute it and/or modify it
12  under the terms of the GNU General Public License as published by
13  the Free Software Foundation, either version 3 of the License, or
14  (at your option) any later version.
15 
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18  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19  for more details.
20 
21  You should have received a copy of the GNU General Public License
22  along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
23 
24 Description
25  Reads a long long from an input stream, for a given version
26  number and File format. If an ascii File is being read, then the line
27  numbers are counted and an erroneous read ised.
28 
29 \*---------------------------------------------------------------------------*/
30 
31 #include <OpenFOAM/error.H>
32 
33 #include "longLong.H"
34 #include <OpenFOAM/IOstreams.H>
35 
36 #include <sstream>
37 
38 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
39 
40 Foam::word Foam::name(long long val)
41 {
42  std::ostringstream buf;
43  buf << val;
44  return buf.str();
45 }
46 
47 // * * * * * * * * * * * * * * * IOstream Operators * * * * * * * * * * * * //
48 
50 {
51  l = readLongLong(is);
52 
53  // Check state of Istream
54  is.check("Istream& operator>>(Istream&, long long&)");
55 
56  return is;
57 }
58 
59 
61 {
62  register long long result = 0;
63 
64  char c = 0;
65 
66  static const label zeroOffset = int('0');
67 
68  // Get next non-whitespace character
69  while (is.read(c) && isspace(c))
70  {}
71 
72  do
73  {
74  if (isspace(c) || c == 0) break;
75 
76  if (!isdigit(c))
77  {
78  FatalIOErrorIn("readLongLong(ISstream& is)", is)
79  << "Illegal digit: \"" << c << "\""
80  << exit(FatalIOError);
81  }
82 
83  result *= 10 + int(c) - zeroOffset;
84  } while (is.read(c));
85 
86  return result;
87 }
88 
89 
90 Foam::Ostream& Foam::operator<<(Ostream& os, const long long l)
91 {
92  long long val = l;
93 
94  long long mask = 1000000000000000000LL;
95 
96  bool printZeroes = false;
97 
98  while (mask > 0)
99  {
100  int d = int(val/mask);
101 
102  if (d == 0)
103  {
104  if (printZeroes)
105  {
106  os.write('0');
107  }
108  }
109  else
110  {
111  printZeroes = true;
112  os.write(char(d+'0'));
113  }
114 
115  val = val % mask;
116  mask /= 10;
117  }
118  os.check("Ostream& operator<<(Ostream&, const long long)");
119  return os;
120 }
121 
122 
123 // ************************ vim: set sw=4 sts=4 et: ************************ //