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> |
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6 | |
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7 | using 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) |
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14 | |
15 | |
15 | #ifndef __attribute__ |
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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 |
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20 | # endif |
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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) |
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… | |
61 | // linear interpolation |
59 | // linear interpolation |
62 | template<typename T, typename U, typename P> |
60 | template<typename T, typename U, typename P> |
63 | static inline |
61 | static inline |
64 | T lerp (T a, U b, P p) |
62 | T lerp (T a, U b, P p) |
65 | { |
63 | { |
66 | return (int(a) * int(p) + int(b) * int(100 - p)) / 100; |
64 | return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100; |
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65 | } |
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66 | |
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67 | template <typename I, typename T> |
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68 | I find (I first, I last, const T& value) |
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69 | { |
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70 | while (first != last && *first != value) |
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71 | ++first; |
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72 | |
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73 | return first; |
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74 | } |
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75 | |
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76 | // return a very temporary (and never deallocated) buffer. keep small. |
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77 | void *rxvt_temp_buf (int len); |
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78 | |
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79 | template<typename T> |
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80 | static inline T * |
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81 | rxvt_temp_buf (int len) |
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82 | { |
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83 | return (T *)rxvt_temp_buf (len * sizeof (T)); |
67 | } |
84 | } |
68 | |
85 | |
69 | // some bit functions, xft fuck me plenty |
86 | // some bit functions, xft fuck me plenty |
70 | #if HAVE_GCC_BUILTINS |
87 | #if HAVE_GCC_BUILTINS |
71 | static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); } |
88 | static inline int ctz (unsigned int x) { return __builtin_ctz (x); } |
72 | static inline int popcount (unsigned int x) CONST { return __builtin_popcount (x); } |
89 | static inline int popcount (unsigned int x) { return __builtin_popcount (x); } |
73 | #else |
90 | #else |
74 | // count trailing zero bits and count # of one bits |
91 | // count trailing zero bits and count # of one bits |
75 | int ctz (unsigned int x) CONST; |
92 | int ctz (unsigned int x) CONST; |
76 | int popcount (unsigned int x) CONST; |
93 | int popcount (unsigned int x) CONST; |
77 | #endif |
94 | #endif |
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89 | void *operator new (size_t s); |
106 | void *operator new (size_t s); |
90 | void operator delete (void *p, size_t s); |
107 | void operator delete (void *p, size_t s); |
91 | }; |
108 | }; |
92 | |
109 | |
93 | /* simplevec taken (and heavily modified), from: |
110 | /* simplevec taken (and heavily modified), from: |
94 | * |
111 | * |
95 | * MICO --- a free CORBA implementation |
112 | * MICO --- a free CORBA implementation |
96 | * Copyright (C) 1997-98 Kay Roemer & Arno Puder |
113 | * Copyright (C) 1997-98 Kay Roemer & Arno Puder |
97 | */ |
114 | */ |
98 | template<class T> |
115 | template<class T> |
99 | struct simplevec { |
116 | struct simplevec { |
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347 | |
364 | |
348 | template<typename T> |
365 | template<typename T> |
349 | struct vector : simplevec<T> |
366 | struct vector : simplevec<T> |
350 | { }; |
367 | { }; |
351 | |
368 | |
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369 | struct stringvec : simplevec<char *> |
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370 | { |
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371 | ~stringvec () |
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372 | { |
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373 | for (char **c = begin (); c != end (); c++) |
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374 | free (*c); |
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375 | } |
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376 | }; |
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377 | |
352 | #if 0 |
378 | #if 0 |
353 | template<typename T> |
379 | template<typename T> |
354 | struct rxvt_vec : simplevec<void *> { |
380 | struct rxvt_vec : simplevec<void *> { |
355 | typedef T *iterator; |
381 | typedef T *iterator; |
356 | |
382 | |
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363 | T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } |
389 | T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } |
364 | 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])); } |
365 | }; |
391 | }; |
366 | #endif |
392 | #endif |
367 | |
393 | |
368 | template <typename I, typename T> |
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369 | I find (I first, I last, const T& value) |
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370 | { |
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371 | while (first != last && *first != value) |
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372 | ++first; |
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373 | |
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374 | return first; |
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375 | } |
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376 | |
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377 | template<typename T> |
394 | template<typename T> |
378 | struct auto_ptr { |
395 | struct auto_ptr { |
379 | T *p; |
396 | T *p; |
380 | |
397 | |
381 | auto_ptr () : p (0) { } |
398 | auto_ptr () : p (0) { } |
… | |
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432 | } |
449 | } |
433 | }; |
450 | }; |
434 | |
451 | |
435 | typedef auto_ptr<char> auto_str; |
452 | typedef auto_ptr<char> auto_str; |
436 | |
453 | |
437 | struct stringvec : simplevec<char *> |
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438 | { |
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439 | ~stringvec () |
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440 | { |
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441 | for (char **c = begin (); c != end (); c++) |
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442 | free (*c); |
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443 | } |
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444 | }; |
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445 | |
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446 | // return a very temporary (and never deallocated) buffer. keep small. |
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447 | void *rxvt_temp_buf (int len); |
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448 | |
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449 | template<typename T> |
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450 | static inline T * |
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451 | rxvt_temp_buf (int len) |
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452 | { |
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453 | return (T *)rxvt_temp_buf (len * sizeof (T)); |
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454 | } |
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455 | |
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456 | #endif |
454 | #endif |
457 | |
455 | |