external/bsd/atf/dist/atf-c++/detail/text.cpp

   1 //
   2 // Automated Testing Framework (atf)
   3 //
   4 // Copyright (c) 2007 The NetBSD Foundation, Inc.
   5 // All rights reserved.
   6 //
   7 // Redistribution and use in source and binary forms, with or without
   8 // modification, are permitted provided that the following conditions
   9 // are met:
  10 // 1. Redistributions of source code must retain the above copyright
  11 //    notice, this list of conditions and the following disclaimer.
  12 // 2. Redistributions in binary form must reproduce the above copyright
  13 //    notice, this list of conditions and the following disclaimer in the
  14 //    documentation and/or other materials provided with the distribution.
  15 //
  16 // THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
  17 // CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  18 // INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  19 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20 // IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
  21 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  23 // GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  25 // IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  26 // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  27 // IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28 //
  29
  30 extern "C" {
  31 #include <regex.h>
  32 }
  33
  34 #include <cctype>
  35 #include <cstring>
  36
  37 extern "C" {
  38 #include "../../atf-c/error.h"
  39
  40 #include "../../atf-c/detail/text.h"
  41 }
  42
  43 #include "exceptions.hpp"
  44 #include "text.hpp"
  45
  46 namespace impl = atf::text;
  47 #define IMPL_NAME "atf::text"
  48
  49 char*
  50 impl::duplicate(const char* str)
  51 {
  52     char* copy = new char[std::strlen(str) + 1];
  53     std::strcpy(copy, str);
  54     return copy;
  55 }
  56
  57 bool
  58 impl::match(const std::string& str, const std::string& regex)
  59 {
  60     bool found;
  61
  62     // Special case: regcomp does not like empty regular expressions.
  63     if (regex.empty()) {
  64         found = str.empty();
  65     } else {
  66         ::regex_t preg;
  67
  68         if (::regcomp(&preg, regex.c_str(), REG_EXTENDED) != 0)
  69             throw std::runtime_error("Invalid regular expression '" + regex +
  70                                      "'");
  71
  72         const int res = ::regexec(&preg, str.c_str(), 0, NULL, 0);
  73         regfree(&preg);
  74         if (res != 0 && res != REG_NOMATCH)
  75             throw std::runtime_error("Invalid regular expression " + regex);
  76
  77         found = res == 0;
  78     }
  79
  80     return found;
  81 }
  82
  83 std::string
  84 impl::to_lower(const std::string& str)
  85 {
  86     std::string lc;
  87     for (std::string::const_iterator iter = str.begin(); iter != str.end();
  88          iter++)
  89         lc += std::tolower(*iter);
  90     return lc;
  91 }
  92
  93 std::vector< std::string >
  94 impl::split(const std::string& str, const std::string& delim)
  95 {
  96     std::vector< std::string > words;
  97
  98     std::string::size_type pos = 0, newpos = 0;
  99     while (pos < str.length() && newpos != std::string::npos) {
 100         newpos = str.find(delim, pos);
 101         if (newpos != pos)
 102             words.push_back(str.substr(pos, newpos - pos));
 103         pos = newpos + delim.length();
 104     }
 105
 106     return words;
 107 }
 108
 109 std::string
 110 impl::trim(const std::string& str)
 111 {
 112     std::string::size_type pos1 = str.find_first_not_of(" \t");
 113     std::string::size_type pos2 = str.find_last_not_of(" \t");
 114
 115     if (pos1 == std::string::npos && pos2 == std::string::npos)
 116         return "";
 117     else if (pos1 == std::string::npos)
 118         return str.substr(0, str.length() - pos2);
 119     else if (pos2 == std::string::npos)
 120         return str.substr(pos1);
 121     else
 122         return str.substr(pos1, pos2 - pos1 + 1);
 123 }
 124
 125 bool
 126 impl::to_bool(const std::string& str)
 127 {
 128     bool b;
 129
 130     atf_error_t err = atf_text_to_bool(str.c_str(), &b);
 131     if (atf_is_error(err))
 132         throw_atf_error(err);
 133
 134     return b;
 135 }
 136
 137 int64_t
 138 impl::to_bytes(std::string str)
 139 {
 140     if (str.empty())
 141         throw std::runtime_error("Empty value");
 142
 143     const char unit = str[str.length() - 1];
 144     int64_t multiplier;
 145     switch (unit) {
 146     case 'k': case 'K': multiplier = 1 << 10; break;
 147     case 'm': case 'M': multiplier = 1 << 20; break;
 148     case 'g': case 'G': multiplier = 1 << 30; break;
 149     case 't': case 'T': multiplier = int64_t(1) << 40; break;
 150     default:
 151         if (!std::isdigit(unit))
 152             throw std::runtime_error(std::string("Unknown size unit '") + unit
 153                                      + "'");
 154         multiplier = 1;
 155     }
 156     if (multiplier != 1)
 157         str.erase(str.length() - 1);
 158
 159     return to_type< int64_t >(str) * multiplier;
 160 }