ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/rxvt-unicode/src/rxvtutil.h
(Generate patch)

Comparing rxvt-unicode/src/rxvtutil.h (file contents):
Revision 1.17 by root, Thu Jan 12 00:35:39 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 <cstring> 5#include <cstring>
6
7using namespace std;
5 8
6#define PP_CONCAT_(a, b) a ## b 9#define PP_CONCAT_(a, b) a ## b
7#define PP_CONCAT(a, b) PP_CONCAT_(a, b) 10#define PP_CONCAT(a, b) PP_CONCAT_(a, b)
8#define PP_STRINGIFY_(a) #a 11#define PP_STRINGIFY_(a) #a
9#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
10 34
11extern class byteorder { 35extern class byteorder {
12 static unsigned int e; // at least 32 bits 36 static unsigned int e; // at least 32 bits
13public: 37public:
14 byteorder (); 38 byteorder ();
… …
28template<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; }
29template<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; }
30 54
31template<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; }
32 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
33// in range including end 96// in range including end
34#define IN_RANGE_INC(val,beg,end) \ 97#define IN_RANGE_INC(val,beg,end) \
35 ((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))
36 99
37// in range excluding end 100// in range excluding end
… …
43 void *operator new (size_t s); 106 void *operator new (size_t s);
44 void operator delete (void *p, size_t s); 107 void operator delete (void *p, size_t s);
45}; 108};
46 109
47/* simplevec taken (and heavily modified), from: 110/* simplevec taken (and heavily modified), from:
48 * 111 *
49 * MICO --- a free CORBA implementation 112 * MICO --- a free CORBA implementation
50 * Copyright (C) 1997-98 Kay Roemer & Arno Puder 113 * Copyright (C) 1997-98 Kay Roemer & Arno Puder
51 */ 114 */
52template<class T> 115template<class T>
53struct simplevec { 116struct simplevec {
… …
256 return pos; 319 return pos;
257 } 320 }
258 void erase (iterator first, iterator last) 321 void erase (iterator first, iterator last)
259 { 322 {
260 if (last != first) { 323 if (last != first) {
261 memmove (first, last, (end ()-last)*sizeof (T)); 324 memmove (first, last, (end () - last) * sizeof (T));
262 _last -= last - first; 325 _last -= last - first;
263 } 326 }
264 } 327 }
265 void erase (iterator pos) 328 void erase (iterator pos)
266 { 329 {
267 if (pos != end ()) { 330 if (pos != end ()) {
268 memmove (pos, pos+1, (end ()- (pos+1))*sizeof (T)); 331 memmove (pos, pos+1, (end () - (pos+1)) * sizeof (T));
269 --_last; 332 --_last;
270 } 333 }
271 } 334 }
272 void swap (simplevec<T> &t) 335 void swap (simplevec<T> &t)
273 { 336 {
… …
300 363
301 364
302template<typename T> 365template<typename T>
303struct vector : simplevec<T> 366struct vector : simplevec<T>
304{ }; 367{ };
368
369struct stringvec : simplevec<char *>
370{
371 ~stringvec ()
372 {
373 for (char **c = begin (); c != end (); c++)
374 free (*c);
375 }
376};
305 377
306#if 0 378#if 0
307template<typename T> 379template<typename T>
308struct rxvt_vec : simplevec<void *> { 380struct rxvt_vec : simplevec<void *> {
309 typedef T *iterator; 381 typedef T *iterator;
… …
315 iterator begin () const { return (iterator)simplevec<void *>::begin (); } 387 iterator begin () const { return (iterator)simplevec<void *>::begin (); }
316 iterator end () const { return (iterator)simplevec<void *>::end (); } 388 iterator end () const { return (iterator)simplevec<void *>::end (); }
317 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } 389 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); }
318 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])); }
319}; 391};
320#endif
321
322template <typename I, typename T>
323I find (I first, I last, const T& value)
324{
325 while (first != last && *first != value)
326 ++first;
327
328 return first;
329}
330 392
331template<typename T> 393template<typename T>
332struct auto_ptr { 394struct auto_ptr {
333 T *p; 395 T *p;
334 396
… …
385 return r; 447 return r;
386 } 448 }
387}; 449};
388 450
389typedef auto_ptr<char> auto_str; 451typedef auto_ptr<char> auto_str;
390
391struct stringvec : simplevec<char *>
392{
393 ~stringvec ()
394 {
395 for (char **c = begin (); c != end (); c++)
396 delete [] *c;
397 }
398};
399
400#endif 452#endif
401 453
454#endif
455

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines