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Panzer_String_Utilities.cpp
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1// @HEADER
2// ***********************************************************************
3//
4// Panzer: A partial differential equation assembly
5// engine for strongly coupled complex multiphysics systems
6// Copyright (2011) Sandia Corporation
7//
8// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
9// the U.S. Government retains certain rights in this software.
10//
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12// modification, are permitted provided that the following conditions are
13// met:
14//
15// 1. Redistributions of source code must retain the above copyright
16// notice, this list of conditions and the following disclaimer.
17//
18// 2. Redistributions in binary form must reproduce the above copyright
19// notice, this list of conditions and the following disclaimer in the
20// documentation and/or other materials provided with the distribution.
21//
22// 3. Neither the name of the Corporation nor the names of the
23// contributors may be used to endorse or promote products derived from
24// this software without specific prior written permission.
25//
26// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
27// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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40// ***********************************************************************
41// @HEADER
42
44#include <sstream>
45
46namespace panzer {
47
48 void trim(std::string& str)
49 {
50 const std::string whitespace(" \t\n");
51
52 const auto strBegin = str.find_first_not_of(whitespace);
53 if (strBegin == std::string::npos) {
54 str = "";
55 return; // no content
56 }
57
58 const auto strEnd = str.find_last_not_of(whitespace);
59 const auto strRange = strEnd - strBegin + 1;
60
61 str = str.substr(strBegin, strRange);
62 return;
63 }
64
65 void StringTokenizer(std::vector<std::string>& tokens,
66 const std::string& str,
67 const std::string delimiters,bool trim)
68 {
69 using std::string;
70
71 // Skip delimiters at beginning.
72 string::size_type lastPos = str.find_first_not_of(delimiters, 0);
73 // Find first "non-delimiter".
74 string::size_type pos = str.find_first_of(delimiters, lastPos);
75
76 while (string::npos != pos || string::npos != lastPos) {
77
78 // grab token, trim if desired
79 std::string token = str.substr(lastPos,pos-lastPos);
80 if(trim)
81 panzer::trim(token);
82
83 // Found a token, add it to the vector.
84 tokens.push_back(token);
85
86 if(pos==string::npos)
87 break;
88
89 // Skip delimiters. Note the "not_of"
90 lastPos = str.find_first_not_of(delimiters, pos);
91 // Find next "non-delimiter"
92 pos = str.find_first_of(delimiters, lastPos);
93 }
94
95 }
96
97 void TokensToDoubles(std::vector<double> & values,const std::vector<std::string> & tokens)
98 {
99 // turn tokens into doubles (its a miracle!)
100 for(std::size_t i=0;i<tokens.size();i++) {
101 double value = 0.0;
102 std::stringstream ss;
103 ss << tokens[i];
104 ss >> value;
105
106 values.push_back(value);
107 }
108 }
109
110 void TokensToInts(std::vector<int> & values,const std::vector<std::string> & tokens)
111 {
112 // turn tokens into doubles (its a miracle!)
113 for(std::size_t i=0;i<tokens.size();i++) {
114 int value = 0;
115 std::stringstream ss;
116 ss << tokens[i];
117 ss >> value;
118
119 values.push_back(value);
120 }
121 }
122}
void TokensToInts(std::vector< int > &values, const std::vector< std::string > &tokens)
Turn a vector of tokens into a vector of ints.
void StringTokenizer(std::vector< std::string > &tokens, const std::string &str, const std::string delimiters, bool trim)
Tokenize a string, put tokens in a vector.
void trim(std::string &str)
Removes whitespace at beginning and end of string.
void TokensToDoubles(std::vector< double > &values, const std::vector< std::string > &tokens)
Turn a vector of tokens into a vector of doubles.