1 | // |
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2 | // Lol Engine |
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3 | // |
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4 | // Copyright: (c) 2010-2013 Sam Hocevar <sam@hocevar.net> |
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5 | // This program is free software; you can redistribute it and/or |
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6 | // modify it under the terms of the Do What The Fuck You Want To |
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7 | // Public License, Version 2, as published by Sam Hocevar. See |
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8 | // http://www.wtfpl.net/ for more details. |
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9 | // |
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10 | |
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11 | // |
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12 | // The String class |
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13 | // ---------------- |
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14 | // A very simple String class, based on Array. |
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15 | // |
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16 | |
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17 | #if !defined __LOL_BASE_STRING_H__ |
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18 | #define __LOL_BASE_STRING_H__ |
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19 | |
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20 | #include <lol/base/assert.h> |
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21 | #include <lol/base/array.h> |
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22 | |
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23 | #include <cstring> |
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24 | #include <cstdarg> |
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25 | |
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26 | namespace lol |
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27 | { |
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28 | |
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29 | class String : protected Array<char> |
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30 | { |
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31 | private: |
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32 | typedef Array<char> Super; |
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33 | |
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34 | public: |
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35 | inline String() |
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36 | : Super() |
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37 | { |
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38 | Push('\0'); |
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39 | } |
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40 | |
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41 | inline String(char const *str) |
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42 | : Super() |
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43 | { |
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44 | using namespace std; |
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45 | ASSERT(str); |
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46 | Resize((int)strlen(str)); |
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47 | memcpy(&(*this)[0], str, Count() + 1); |
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48 | } |
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49 | |
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50 | inline String(char const *str, int count) |
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51 | : Super() |
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52 | { |
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53 | using namespace std; |
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54 | ASSERT(str); |
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55 | Resize(count); |
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56 | memcpy(&(*this)[0], str, count); |
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57 | ((Super &)*this)[count] = '\0'; |
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58 | } |
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59 | |
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60 | inline String(String const &s) |
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61 | : Super((Super const &)s) |
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62 | { |
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63 | } |
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64 | |
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65 | inline char &operator [](int n) |
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66 | { |
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67 | /* Allow n == Count() because we might have reasonable reasons |
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68 | * to access that hidden null character. */ |
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69 | ASSERT(n >= 0); |
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70 | ASSERT((unsigned)n <= (unsigned)Count()); |
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71 | return ((Super &)*this)[n]; |
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72 | } |
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73 | |
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74 | inline char const &operator [](int n) const |
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75 | { |
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76 | ASSERT(n >= 0); |
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77 | ASSERT(n <= Count()); |
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78 | return ((Super const &)*this)[n]; |
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79 | } |
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80 | |
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81 | inline char &Last() |
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82 | { |
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83 | ASSERT(Count() > 0); |
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84 | return (*this)[Count() - 1]; |
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85 | } |
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86 | |
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87 | inline char const &Last() const |
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88 | { |
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89 | ASSERT(Count() > 0); |
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90 | return (*this)[Count() - 1]; |
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91 | } |
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92 | |
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93 | inline int Count() const |
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94 | { |
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95 | return ((Super const &)*this).Count() - 1; |
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96 | } |
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97 | |
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98 | /* Return a C string */ |
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99 | inline char const *C() const |
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100 | { |
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101 | return &(*this)[0]; |
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102 | } |
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103 | |
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104 | /* Does not initialise the newly allocated characters */ |
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105 | void Resize(int count) |
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106 | { |
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107 | ASSERT(count >= 0); |
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108 | ((Super &)*this).Resize(count + 1); |
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109 | ((Super &)*this).Last() = '\0'; |
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110 | } |
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111 | |
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112 | String Sub(int start, int count) const |
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113 | { |
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114 | ASSERT(start >= 0); |
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115 | ASSERT(count >= 0); |
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116 | ASSERT(start + count <= Count()); |
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117 | return String(&(*this)[start], count); |
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118 | } |
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119 | |
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120 | inline String operator +(String const &s) const |
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121 | { |
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122 | String ret(*this); |
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123 | return ret += s; |
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124 | } |
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125 | |
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126 | inline String& operator +=(String const &s) |
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127 | { |
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128 | using namespace std; |
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129 | int old_count = Count(); |
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130 | Resize(Count() + s.Count()); |
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131 | memcpy(&(*this)[old_count], &s[0], Count() - old_count); |
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132 | return *this; |
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133 | } |
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134 | |
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135 | inline String operator +(char c) const |
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136 | { |
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137 | String ret(*this); |
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138 | return ret += c; |
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139 | } |
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140 | |
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141 | inline String& operator +=(char c) |
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142 | { |
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143 | ((Super &)*this).Last() = c; |
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144 | ((Super &)*this).Push('\0'); |
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145 | return *this; |
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146 | } |
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147 | |
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148 | inline bool operator ==(String const &s) const |
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149 | { |
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150 | if (this->m_count != s.m_count) |
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151 | return false; |
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152 | |
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153 | for (int i = 0; i < this->m_count; ++i) |
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154 | if ((*this)[i] != s[i]) |
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155 | return false; |
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156 | |
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157 | return true; |
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158 | } |
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159 | |
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160 | inline bool operator !=(String const &s) const |
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161 | { |
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162 | return !(*this == s); |
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163 | } |
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164 | |
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165 | #ifdef __GNUC__ |
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166 | # define LOL_FMT_ATTR(n, p) __attribute__((format(printf, n, p))) |
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167 | #else |
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168 | # define LOL_FMT_ATTR(n, p) |
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169 | #endif |
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170 | static String Printf(char const *format, ...) LOL_FMT_ATTR(1, 2); |
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171 | #undef LOL_FMT_ATTR |
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172 | static String Printf(char const *format, va_list ap); |
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173 | }; |
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174 | |
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175 | } /* namespace lol */ |
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176 | |
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177 | #endif // __LOL_BASE_STRING_H__ |
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178 | |
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