00001 /*---------------------------------------------------------------------------*\ 00002 ========= | 00003 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox 00004 \\ / O peration | 00005 \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd. 00006 \\/ M anipulation | 00007 ------------------------------------------------------------------------------- 00008 License 00009 This file is part of OpenFOAM. 00010 00011 OpenFOAM is free software: you can redistribute it and/or modify it 00012 under the terms of the GNU General Public License as published by 00013 the Free Software Foundation, either version 3 of the License, or 00014 (at your option) any later version. 00015 00016 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00018 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 00019 for more details. 00020 00021 You should have received a copy of the GNU General Public License 00022 along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>. 00023 00024 Description 00025 Read of a non-delimited hex label 00026 00027 \*---------------------------------------------------------------------------*/ 00028 00029 #include <OpenFOAM/readHexLabel.H> 00030 00031 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // 00032 00033 Foam::label Foam::readHexLabel(ISstream& is) 00034 { 00035 // Takes into account that 'a' (or 'A') is 10 00036 static const label alphaOffset = toupper('A') - 10; 00037 // Takes into account that '0' is 0 00038 static const label zeroOffset = int('0'); 00039 00040 char c = 0; 00041 00042 // Get next non-whitespace character 00043 while (is.get(c) && isspace(c)) 00044 {} 00045 00046 register label result = 0; 00047 do 00048 { 00049 if (isspace(c) || c == 0) break; 00050 00051 if (!isxdigit(c)) 00052 { 00053 FatalIOErrorIn("readHexLabel(ISstream&)", is) 00054 << "Illegal hex digit: '" << c << "'" 00055 << exit(FatalIOError); 00056 } 00057 00058 result *= 16; 00059 00060 if (isdigit(c)) 00061 { 00062 result += int(c) - zeroOffset; 00063 } 00064 else 00065 { 00066 result += toupper(c) - alphaOffset; 00067 } 00068 } while (is.get(c)); 00069 00070 return result; 00071 } 00072 00073 00074 // ************************ vim: set sw=4 sts=4 et: ************************ //
