1 | #ifndef RXVT_UTIL_H |
1 | #ifndef RXVT_UTIL_H |
2 | #define RXVT_UTIL_H |
2 | #define RXVT_UTIL_H |
3 | |
3 | |
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4 | #include <new> |
4 | #include <stdlib.h> |
5 | #include <stdlib.h> |
5 | #include <string.h> |
6 | #include <string.h> |
6 | #include "ecb.h" |
7 | #include "ecb.h" |
7 | #include "estl.h" |
8 | #include "estl.h" |
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9 | |
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10 | #include "emman.h" |
8 | |
11 | |
9 | // increases code size unless -fno-enforce-eh-specs |
12 | // increases code size unless -fno-enforce-eh-specs |
10 | #if __GNUC__ |
13 | #if __GNUC__ |
11 | # define NOTHROW |
14 | # define NOTHROW |
12 | # define THROW(x) |
15 | # define THROW(x) |
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24 | |
27 | |
25 | template<typename T> static inline T squared_diff (T a, T b) { return (a - b) * (a - b); } |
28 | template<typename T> static inline T squared_diff (T a, T b) { return (a - b) * (a - b); } |
26 | |
29 | |
27 | // linear interpolation |
30 | // linear interpolation |
28 | template<typename T, typename U, typename P> |
31 | template<typename T, typename U, typename P> |
29 | static inline |
32 | static inline T |
30 | T lerp (T a, U b, P p) |
33 | lerp (T a, U b, P p) |
31 | { |
34 | { |
32 | return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100; |
35 | return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100; |
33 | } |
36 | } |
34 | |
37 | |
35 | // return a very temporary (and never deallocated) buffer. keep small. |
38 | // return a very temporary (and never deallocated) buffer. keep small. |
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58 | { |
61 | { |
59 | void *operator new (size_t s); |
62 | void *operator new (size_t s); |
60 | void operator delete (void *p, size_t s); |
63 | void operator delete (void *p, size_t s); |
61 | }; |
64 | }; |
62 | |
65 | |
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66 | // alas new/delete cannot be specified as inline in C++11 (see 17.6.4.6) |
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67 | void *operator new (size_t s) throw (std::bad_alloc); |
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68 | void operator delete (void *p) throw (); |
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69 | |
63 | struct stringvec : simplevec<char *> |
70 | struct stringvec : simplevec<char *> |
64 | { |
71 | { |
65 | ~stringvec () |
72 | ~stringvec () |
66 | { |
73 | { |
67 | for (char **c = begin (); c != end (); c++) |
74 | for (char **c = begin (); c != end (); c++) |
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84 | T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } |
91 | T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } |
85 | const T &operator [] (int i) const { return * (const T *) (& ((* (const simplevec<void *> *)this)[i])); } |
92 | const T &operator [] (int i) const { return * (const T *) (& ((* (const simplevec<void *> *)this)[i])); } |
86 | }; |
93 | }; |
87 | #endif |
94 | #endif |
88 | |
95 | |
89 | template<typename T> |
96 | typedef estl::scoped_array<char> auto_str; |
90 | struct auto_ptr |
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91 | { |
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92 | T *p; |
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93 | |
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94 | auto_ptr () : p (0) { } |
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95 | auto_ptr (T *a) : p (a) { } |
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96 | |
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97 | auto_ptr (auto_ptr<T> &a) |
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98 | { |
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99 | p = a.p; |
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100 | a.p = 0; |
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101 | } |
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102 | |
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103 | template<typename A> |
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104 | auto_ptr (auto_ptr<A> &a) |
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105 | { |
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106 | p = a.p; |
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107 | a.p = 0; |
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108 | } |
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109 | |
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110 | ~auto_ptr () |
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111 | { |
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112 | free (p); |
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113 | } |
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114 | |
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115 | void reset (T *a) |
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116 | { |
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117 | free (p); |
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118 | p = a; |
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119 | } |
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120 | |
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121 | // void because it makes sense in our context |
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122 | void operator = (auto_ptr &a) |
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123 | { |
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124 | *this = a.p; |
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125 | a.p = 0; |
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126 | } |
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127 | |
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128 | template<typename A> |
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129 | void operator = (auto_ptr<A> &a) |
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130 | { |
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131 | *this = a.p; |
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132 | a.p = 0; |
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133 | } |
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134 | |
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135 | operator T * () const { return p; } |
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136 | |
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137 | T *operator -> () const { return p; } |
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138 | T &operator * () const { return *p; } |
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139 | |
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140 | T *get () |
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141 | { |
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142 | T *r = p; |
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143 | p = 0; |
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144 | return r; |
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145 | } |
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146 | }; |
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147 | |
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148 | typedef auto_ptr<char> auto_str; |
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149 | |
97 | |
150 | #endif |
98 | #endif |
151 | |
99 | |