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/cvs/rxvt-unicode/src/rxvtutil.h
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Comparing rxvt-unicode/src/rxvtutil.h (file contents):
Revision 1.24 by root, Mon Jan 30 16:12:58 2006 UTC vs.
Revision 1.34 by root, Sun Dec 2 22:37:14 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)
11 13
12// actually, some gcc-3.x versions work, too 14#define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 4))
13#define HAVE_GCC_BUILTINS (__GNUC__ >= 4)
14 15
15#ifndef __attribute__
16# if __GNUC__ 16#if __GNUC__ >= 4
17# if (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || (__GNUC__ < 2) 17# define rxvt_attribute(x) __attribute__(x)
18# define __attribute__(x) 18#else
19# endif
20# endif
21# define __attribute__(x) 19# define rxvt_attribute(x)
22#endif 20#endif
23 21
24#define NORETURN __attribute__ ((noreturn)) 22#define NORETURN rxvt_attribute ((noreturn))
25#define UNUSED __attribute__ ((unused)) 23#define UNUSED rxvt_attribute ((unused))
26#define CONST __attribute__ ((const)) 24#define CONST rxvt_attribute ((const))
27 25
28// increases code size unless -fno-enforce-eh-specs 26// increases code size unless -fno-enforce-eh-specs
29#if __GNUC__ 27#if __GNUC__
30# define NOTHROW 28# define NOTHROW
31# define THROW(x) 29# define THROW(x)
… …
54template<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; }
55template<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; }
56 54
57template<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; }
58 56
57template<typename T> static inline T squared_diff (T a, T b) { return (a-b)*(a-b); }
58
59// linear interpolation 59// linear interpolation
60template<typename T, typename U, typename P> 60template<typename T, typename U, typename P>
61static inline 61static inline
62T lerp (T a, U b, P p) 62T lerp (T a, U b, P p)
63{ 63{
64 return (int(a) * int(p) + int(b) * int(100 - p)) / 100; 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));
65} 84}
66 85
67// some bit functions, xft fuck me plenty 86// some bit functions, xft fuck me plenty
68#if HAVE_GCC_BUILTINS 87#if HAVE_GCC_BUILTINS
69static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); } 88static inline int ctz (unsigned int x) { return __builtin_ctz (x); }
70static inline int popcount (unsigned int x) CONST { return __builtin_popcount (x); } 89static inline int popcount (unsigned int x) { return __builtin_popcount (x); }
71#else 90#else
72// count trailing zero bits and count # of one bits 91// count trailing zero bits and count # of one bits
73int ctz (unsigned int x) CONST; 92int ctz (unsigned int x) CONST;
74int popcount (unsigned int x) CONST; 93int popcount (unsigned int x) CONST;
75#endif 94#endif
… …
87 void *operator new (size_t s); 106 void *operator new (size_t s);
88 void operator delete (void *p, size_t s); 107 void operator delete (void *p, size_t s);
89}; 108};
90 109
91/* simplevec taken (and heavily modified), from: 110/* simplevec taken (and heavily modified), from:
92 * 111 *
93 * MICO --- a free CORBA implementation 112 * MICO --- a free CORBA implementation
94 * Copyright (C) 1997-98 Kay Roemer & Arno Puder 113 * Copyright (C) 1997-98 Kay Roemer & Arno Puder
95 */ 114 */
96template<class T> 115template<class T>
97struct simplevec { 116struct simplevec {
… …
345 364
346template<typename T> 365template<typename T>
347struct vector : simplevec<T> 366struct vector : simplevec<T>
348{ }; 367{ };
349 368
369struct stringvec : simplevec<char *>
370{
371 ~stringvec ()
372 {
373 for (char **c = begin (); c != end (); c++)
374 free (*c);
375 }
376};
377
350#if 0 378#if 0
351template<typename T> 379template<typename T>
352struct rxvt_vec : simplevec<void *> { 380struct rxvt_vec : simplevec<void *> {
353 typedef T *iterator; 381 typedef T *iterator;
354 382
… …
361 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } 389 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); }
362 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])); }
363}; 391};
364#endif 392#endif
365 393
366template <typename I, typename T>
367I find (I first, I last, const T& value)
368{
369 while (first != last && *first != value)
370 ++first;
371
372 return first;
373}
374
375template<typename T> 394template<typename T>
376struct auto_ptr { 395struct auto_ptr {
377 T *p; 396 T *p;
378 397
379 auto_ptr () : p (0) { } 398 auto_ptr () : p (0) { }
… …
430 } 449 }
431}; 450};
432 451
433typedef auto_ptr<char> auto_str; 452typedef auto_ptr<char> auto_str;
434 453
435struct stringvec : simplevec<char *>
436{
437 ~stringvec ()
438 {
439 for (char **c = begin (); c != end (); c++)
440 free (*c);
441 }
442};
443
444// return a very temporary (and never deallocated) buffer. keep small.
445void *rxvt_temp_buf (int len);
446
447template<typename T>
448static inline T *
449rxvt_temp_buf (int len)
450{
451 return (T *)rxvt_temp_buf (len * sizeof (T));
452}
453
454#endif 454#endif
455 455

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