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/cvs/rxvt-unicode/src/rxvtutil.h
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Comparing rxvt-unicode/src/rxvtutil.h (file contents):
Revision 1.19 by root, Sun Jan 22 00:36:59 2006 UTC vs.
Revision 1.32 by ayin, Sun Dec 2 12:31:44 2007 UTC

1#ifndef RXVT_UTIL_H 1#ifndef RXVT_UTIL_H
2#define RXVT_UTIL_H 2#define RXVT_UTIL_H
3 3
4#include <cstdlib> 4#include <cstdlib>
5#include <cstring> 5#include <cstring>
6
7using namespace std;
6 8
7#define PP_CONCAT_(a, b) a ## b 9#define PP_CONCAT_(a, b) a ## b
8#define PP_CONCAT(a, b) PP_CONCAT_(a, b) 10#define PP_CONCAT(a, b) PP_CONCAT_(a, b)
9#define PP_STRINGIFY_(a) #a 11#define PP_STRINGIFY_(a) #a
10#define PP_STRINGIFY(a) PP_STRINGIFY_(a) 12#define PP_STRINGIFY(a) PP_STRINGIFY_(a)
13
14#define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 4))
15
16#if __GNUC__ >= 4
17# define rxvt_attribute(x) __attribute__(x)
18#else
19# define rxvt_attribute(x)
20#endif
21
22#define NORETURN rxvt_attribute ((noreturn))
23#define UNUSED rxvt_attribute ((unused))
24#define CONST rxvt_attribute ((const))
25
26// increases code size unless -fno-enforce-eh-specs
27#if __GNUC__
28# define NOTHROW
29# define THROW(x)
30#else
31# define NOTHROW throw()
32# define THROW(x) throw x
33#endif
11 34
12extern class byteorder { 35extern class byteorder {
13 static unsigned int e; // at least 32 bits 36 static unsigned int e; // at least 32 bits
14public: 37public:
15 byteorder (); 38 byteorder ();
… …
29template<typename T, typename U, typename V> static inline T clamp (T v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; } 52template<typename T, typename U, typename V> static inline T clamp (T v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; }
30template<typename T, typename U, typename V> static inline void clamp_it (T &v, U a, V b) { v = v < (T)a ? a : v >(T)b ? b : v; } 53template<typename T, typename U, typename V> static inline void clamp_it (T &v, U a, V b) { v = v < (T)a ? a : v >(T)b ? b : v; }
31 54
32template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } 55template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; }
33 56
57template<typename T> static inline T squared_diff (T a, T b) { return (a-b)*(a-b); }
58
59// linear interpolation
60template<typename T, typename U, typename P>
61static inline
62T lerp (T a, U b, P p)
63{
64 return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100;
65}
66
67template <typename I, typename T>
68I find (I first, I last, const T& value)
69{
70 while (first != last && *first != value)
71 ++first;
72
73 return first;
74}
75
76// return a very temporary (and never deallocated) buffer. keep small.
77void *rxvt_temp_buf (int len);
78
79template<typename T>
80static inline T *
81rxvt_temp_buf (int len)
82{
83 return (T *)rxvt_temp_buf (len * sizeof (T));
84}
85
86// some bit functions, xft fuck me plenty
87#if HAVE_GCC_BUILTINS
88static inline int ctz (unsigned int x) { return __builtin_ctz (x); }
89static inline int popcount (unsigned int x) { return __builtin_popcount (x); }
90#else
91// count trailing zero bits and count # of one bits
92int ctz (unsigned int x) CONST;
93int popcount (unsigned int x) CONST;
94#endif
95
34// in range including end 96// in range including end
35#define IN_RANGE_INC(val,beg,end) \ 97#define IN_RANGE_INC(val,beg,end) \
36 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) 98 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg))
37 99
38// in range excluding end 100// in range excluding end
… …
44 void *operator new (size_t s); 106 void *operator new (size_t s);
45 void operator delete (void *p, size_t s); 107 void operator delete (void *p, size_t s);
46}; 108};
47 109
48/* simplevec taken (and heavily modified), from: 110/* simplevec taken (and heavily modified), from:
49 * 111 *
50 * MICO --- a free CORBA implementation 112 * MICO --- a free CORBA implementation
51 * Copyright (C) 1997-98 Kay Roemer & Arno Puder 113 * Copyright (C) 1997-98 Kay Roemer & Arno Puder
52 */ 114 */
53template<class T> 115template<class T>
54struct simplevec { 116struct simplevec {
… …
302 364
303template<typename T> 365template<typename T>
304struct vector : simplevec<T> 366struct vector : simplevec<T>
305{ }; 367{ };
306 368
369struct stringvec : simplevec<char *>
370{
371 ~stringvec ()
372 {
373 for (char **c = begin (); c != end (); c++)
374 free (*c);
375 }
376};
377
307#if 0 378#if 0
308template<typename T> 379template<typename T>
309struct rxvt_vec : simplevec<void *> { 380struct rxvt_vec : simplevec<void *> {
310 typedef T *iterator; 381 typedef T *iterator;
311 382
… …
316 iterator begin () const { return (iterator)simplevec<void *>::begin (); } 387 iterator begin () const { return (iterator)simplevec<void *>::begin (); }
317 iterator end () const { return (iterator)simplevec<void *>::end (); } 388 iterator end () const { return (iterator)simplevec<void *>::end (); }
318 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } 389 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); }
319 const T &operator [] (int i) const { return * (const T *) (& ((* (const simplevec<void *> *)this)[i])); } 390 const T &operator [] (int i) const { return * (const T *) (& ((* (const simplevec<void *> *)this)[i])); }
320}; 391};
321#endif
322
323template <typename I, typename T>
324I find (I first, I last, const T& value)
325{
326 while (first != last && *first != value)
327 ++first;
328
329 return first;
330}
331 392
332template<typename T> 393template<typename T>
333struct auto_ptr { 394struct auto_ptr {
334 T *p; 395 T *p;
335 396
… …
386 return r; 447 return r;
387 } 448 }
388}; 449};
389 450
390typedef auto_ptr<char> auto_str; 451typedef auto_ptr<char> auto_str;
391
392struct stringvec : simplevec<char *>
393{
394 ~stringvec ()
395 {
396 for (char **c = begin (); c != end (); c++)
397 free (*c);
398 }
399};
400
401#endif 452#endif
402 453
454#endif
455

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