str.hh revision 2
1/* 2 * Copyright (c) 2003 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#ifndef __STR_HH__ 30#define __STR_HH__ 31 32#include <sstream> 33#include <string> 34#include <vector> 35 36#include <ctype.h> 37 38template<class> class Hash; 39template<> 40class Hash<std::string> { 41public: 42 unsigned operator()(const std::string &s) { 43 std::string::const_iterator i = s.begin(); 44 std::string::const_iterator end = s.end(); 45 unsigned hash = 5381; 46 47 while (i < end) 48 hash = ((hash << 5) + hash) + *i++; 49 50 return hash; 51 } 52}; 53 54inline void 55eat_lead_white(std::string &s) 56{ 57 std::string::size_type off = s.find_first_not_of(' '); 58 if (off != std::string::npos) { 59 std::string::iterator begin = s.begin(); 60 s.erase(begin, begin + off); 61 } 62} 63 64inline void 65eat_end_white(std::string &s) 66{ 67 std::string::size_type off = s.find_last_not_of(' '); 68 if (off != std::string::npos) 69 s.erase(s.begin() + off + 1, s.end()); 70} 71 72inline void 73eat_white(std::string &s) 74{ 75 eat_lead_white(s); 76 eat_end_white(s); 77} 78 79inline std::string 80to_lower(const std::string &s) 81{ 82 std::string lower; 83 int len = s.size(); 84 85 lower.reserve(len); 86 87 for (int i = 0; i < len; ++i) 88 lower.push_back(tolower(s[i])); 89 90 return lower; 91} 92 93void 94tokenize(std::vector<std::string> &vector, const std::string &s, 95 char token, bool ign = true); 96 97template <class T> bool 98to_number(const std::string &value, T &retval); 99 100template <class T> 101std::string 102to_string(const T& value) 103{ 104 std::stringstream str; 105 str << value; 106 return str.str(); 107} 108 109// Put quotes around string arg if it contains spaces. 110inline std::string 111quote(const std::string &s) 112{ 113 std::string ret; 114 bool quote = s.find(' ') != std::string::npos; 115 116 if (quote) 117 ret = '"'; 118 119 ret += s; 120 121 if (quote) 122 ret += '"'; 123 124 return ret; 125} 126 127#endif //__STR_HH__ 128