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Comparing rxvt-unicode/src/rxvtutil.h (file contents):
Revision 1.29 by ayin, Wed Oct 31 09:55:24 2007 UTC vs.
Revision 1.45 by sf-exg, Mon May 30 18:39:04 2011 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#include <inttypes.h>
7#include "ecb.h"
6 8
7using namespace std; 9using namespace std;
8
9#define PP_CONCAT_(a, b) a ## b
10#define PP_CONCAT(a, b) PP_CONCAT_(a, b)
11#define PP_STRINGIFY_(a) #a
12#define PP_STRINGIFY(a) PP_STRINGIFY_(a)
13
14#define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 4))
15
16#ifndef __attribute__
17# if __GNUC__
18# if (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || (__GNUC__ < 2)
19# define __attribute__(x)
20# endif
21# endif
22# define __attribute__(x)
23#endif
24
25#define NORETURN __attribute__ ((noreturn))
26#define UNUSED __attribute__ ((unused))
27#define CONST __attribute__ ((const))
28 10
29// increases code size unless -fno-enforce-eh-specs 11// increases code size unless -fno-enforce-eh-specs
30#if __GNUC__ 12#if __GNUC__
31# define NOTHROW 13# define NOTHROW
32# define THROW(x) 14# define THROW(x)
33#else 15#else
34# define NOTHROW throw() 16# define NOTHROW throw()
35# define THROW(x) throw x 17# define THROW(x) throw x
36#endif 18#endif
37 19
38extern class byteorder {
39 static unsigned int e; // at least 32 bits
40public:
41 byteorder ();
42
43 static bool big_endian () { return e == 0x11223344; };
44 static bool network () { return e == 0x11223344; };
45 static bool little_endian () { return e == 0x44332211; };
46 static bool vax () { return e == 0x44332211; };
47} byteorder;
48
49// various utility functions 20// various utility functions
50template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; } 21template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; }
51template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; } 22template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; }
52template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; } 23template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; }
53template<typename T, typename U> static inline void max_it (T &a, U b) { a = a > (T)b ? a : (T)b; } 24template<typename T, typename U> static inline void max_it (T &a, U b) { a = a > (T)b ? a : (T)b; }
… …
65T lerp (T a, U b, P p) 36T lerp (T a, U b, P p)
66{ 37{
67 return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100; 38 return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100;
68} 39}
69 40
70// some bit functions, xft fuck me plenty 41template <typename I, typename T>
71#if HAVE_GCC_BUILTINS 42I find (I first, I last, const T& value)
72static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); } 43{
73static inline int popcount (unsigned int x) CONST { return __builtin_popcount (x); } 44 while (first != last && *first != value)
74#else 45 ++first;
75// count trailing zero bits and count # of one bits 46
76int ctz (unsigned int x) CONST; 47 return first;
77int popcount (unsigned int x) CONST; 48}
78#endif 49
50// return a very temporary (and never deallocated) buffer. keep small.
51void *rxvt_temp_buf (int len);
52
53template<typename T>
54static inline T *
55rxvt_temp_buf (int len)
56{
57 return (T *)rxvt_temp_buf (len * sizeof (T));
58}
79 59
80// in range including end 60// in range including end
81#define IN_RANGE_INC(val,beg,end) \ 61#define IN_RANGE_INC(val,beg,end) \
82 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) 62 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg))
83 63
84// in range excluding end 64// in range excluding end
85#define IN_RANGE_EXC(val,beg,end) \ 65#define IN_RANGE_EXC(val,beg,end) \
86 ((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg)) 66 ((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg))
87 67
68// for m >= -n, ensure remainder lies between 0..n-1
69#define MOD(m,n) (((m) + (n)) % (n))
70
88// makes dynamically allocated objects zero-initialised 71// makes dynamically allocated objects zero-initialised
89struct zero_initialized { 72struct zero_initialized
73{
90 void *operator new (size_t s); 74 void *operator new (size_t s);
91 void operator delete (void *p, size_t s); 75 void operator delete (void *p, size_t s);
92}; 76};
93 77
94/* simplevec taken (and heavily modified), from: 78/* simplevec taken (and heavily modified), from:
95 * 79 *
96 * MICO --- a free CORBA implementation 80 * MICO --- a free CORBA implementation
97 * Copyright (C) 1997-98 Kay Roemer & Arno Puder 81 * Copyright (C) 1997-98 Kay Roemer & Arno Puder
98 */ 82 */
99template<class T> 83template<class T>
100struct simplevec { 84struct simplevec
85{
101 typedef T* iterator; 86 typedef T* iterator;
102 typedef const T* const_iterator; 87 typedef const T* const_iterator;
103 typedef unsigned long size_type; 88 typedef unsigned long size_type;
104 89
105private: 90private:
… …
346} 331}
347 332
348 333
349template<typename T> 334template<typename T>
350struct vector : simplevec<T> 335struct vector : simplevec<T>
351{ }; 336{
337};
338
339struct stringvec : simplevec<char *>
340{
341 ~stringvec ()
342 {
343 for (char **c = begin (); c != end (); c++)
344 free (*c);
345 }
346};
352 347
353#if 0 348#if 0
354template<typename T> 349template<typename T>
355struct rxvt_vec : simplevec<void *> { 350struct rxvt_vec : simplevec<void *>
351{
356 typedef T *iterator; 352 typedef T *iterator;
357 353
358 void push_back (T d) { simplevec<void *>::push_back ((void *)d); } 354 void push_back (T d) { simplevec<void *>::push_back ((void *)d); }
359 T pop_back () { return (T*)simplevec<void *>::pop_back (); } 355 T pop_back () { return (T*)simplevec<void *>::pop_back (); }
360 void erase (int i) { erase (begin () + i); } 356 void erase (int i) { erase (begin () + i); }
… …
364 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } 360 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); }
365 const T &operator [] (int i) const { return * (const T *) (& ((* (const simplevec<void *> *)this)[i])); } 361 const T &operator [] (int i) const { return * (const T *) (& ((* (const simplevec<void *> *)this)[i])); }
366}; 362};
367#endif 363#endif
368 364
369template <typename I, typename T>
370I find (I first, I last, const T& value)
371{
372 while (first != last && *first != value)
373 ++first;
374
375 return first;
376}
377
378template<typename T> 365template<typename T>
379struct auto_ptr { 366struct auto_ptr
367{
380 T *p; 368 T *p;
381 369
382 auto_ptr () : p (0) { } 370 auto_ptr () : p (0) { }
383 auto_ptr (T *a) : p (a) { } 371 auto_ptr (T *a) : p (a) { }
384 372
… …
433 } 421 }
434}; 422};
435 423
436typedef auto_ptr<char> auto_str; 424typedef auto_ptr<char> auto_str;
437 425
438struct stringvec : simplevec<char *>
439{
440 ~stringvec ()
441 {
442 for (char **c = begin (); c != end (); c++)
443 free (*c);
444 }
445};
446
447// return a very temporary (and never deallocated) buffer. keep small.
448void *rxvt_temp_buf (int len);
449
450template<typename T>
451static inline T *
452rxvt_temp_buf (int len)
453{
454 return (T *)rxvt_temp_buf (len * sizeof (T));
455}
456
457#endif 426#endif
458 427

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