1 | #ifndef RXVT_UTIL_H |
1 | #ifndef RXVT_UTIL_H |
2 | #define RXVT_UTIL_H |
2 | #define RXVT_UTIL_H |
3 | |
3 | |
|
|
4 | #include <stdlib.h> |
4 | #include <cstring> |
5 | #include <string.h> |
|
|
6 | #include "ecb.h" |
|
|
7 | #include "estl.h" |
5 | |
8 | |
6 | #define PP_CONCAT_(a, b) a ## b |
9 | // increases code size unless -fno-enforce-eh-specs |
7 | #define PP_CONCAT(a, b) PP_CONCAT_(a, b) |
10 | #if __GNUC__ |
8 | #define PP_STRINGIFY_(a) #a |
11 | # define NOTHROW |
9 | #define PP_STRINGIFY(a) PP_STRINGIFY_(a) |
12 | # define THROW(x) |
10 | |
13 | #else |
11 | extern class byteorder { |
14 | # define NOTHROW throw() |
12 | static unsigned int e; // at least 32 bits |
15 | # define THROW(x) throw x |
13 | public: |
16 | #endif |
14 | byteorder (); |
|
|
15 | |
|
|
16 | static bool big_endian () { return e == 0x11223344; }; |
|
|
17 | static bool network () { return e == 0x11223344; }; |
|
|
18 | static bool little_endian () { return e == 0x44332211; }; |
|
|
19 | static bool vax () { return e == 0x44332211; }; |
|
|
20 | } byteorder; |
|
|
21 | |
17 | |
22 | // various utility functions |
18 | // various utility functions |
23 | template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; } |
|
|
24 | template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; } |
19 | template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; } |
25 | template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; } |
|
|
26 | template<typename T, typename U> static inline void max_it (T &a, U b) { a = a > (T)b ? a : (T)b; } |
20 | template<typename T, typename U> static inline void max_it (T &a, U b) { a = a > (T)b ? a : (T)b; } |
27 | |
21 | |
28 | template<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; } |
22 | template<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; } |
29 | template<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; } |
23 | template<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 | |
24 | |
31 | template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } |
25 | template<typename T> static inline T squared_diff (T a, T b) { return (a - b) * (a - b); } |
|
|
26 | |
|
|
27 | // linear interpolation |
|
|
28 | template<typename T, typename U, typename P> |
|
|
29 | static inline |
|
|
30 | T lerp (T a, U b, P p) |
|
|
31 | { |
|
|
32 | return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100; |
|
|
33 | } |
|
|
34 | |
|
|
35 | // return a very temporary (and never deallocated) buffer. keep small. |
|
|
36 | void *rxvt_temp_buf (int len); |
|
|
37 | |
|
|
38 | template<typename T> |
|
|
39 | static inline T * |
|
|
40 | rxvt_temp_buf (int len) |
|
|
41 | { |
|
|
42 | return (T *)rxvt_temp_buf (len * sizeof (T)); |
|
|
43 | } |
32 | |
44 | |
33 | // in range including end |
45 | // in range including end |
34 | #define IN_RANGE_INC(val,beg,end) \ |
46 | #define IN_RANGE_INC(val,beg,end) \ |
35 | ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) |
47 | ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) |
36 | |
48 | |
37 | // in range excluding end |
49 | // in range excluding end |
38 | #define IN_RANGE_EXC(val,beg,end) \ |
50 | #define IN_RANGE_EXC(val,beg,end) \ |
39 | ((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg)) |
51 | ((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg)) |
40 | |
52 | |
|
|
53 | // for m >= -n, ensure remainder lies between 0..n-1 |
|
|
54 | #define MOD(m,n) (((m) + (n)) % (n)) |
|
|
55 | |
41 | // makes dynamically allocated objects zero-initialised |
56 | // makes dynamically allocated objects zero-initialised |
42 | struct zero_initialized { |
57 | struct zero_initialized |
|
|
58 | { |
43 | void *operator new (size_t s); |
59 | void *operator new (size_t s); |
44 | void operator delete (void *p, size_t s); |
60 | void operator delete (void *p, size_t s); |
45 | }; |
61 | }; |
46 | |
62 | |
47 | /* simplevec taken (and heavily modified), from: |
63 | struct stringvec : simplevec<char *> |
48 | * |
64 | { |
49 | * MICO --- a free CORBA implementation |
65 | ~stringvec () |
50 | * Copyright (C) 1997-98 Kay Roemer & Arno Puder |
|
|
51 | */ |
|
|
52 | template<class T> |
|
|
53 | struct simplevec { |
|
|
54 | typedef T* iterator; |
|
|
55 | typedef const T* const_iterator; |
|
|
56 | typedef unsigned long size_type; |
|
|
57 | |
|
|
58 | private: |
|
|
59 | size_type _last, _size; |
|
|
60 | T *_buf; |
|
|
61 | |
|
|
62 | public: |
|
|
63 | const_iterator begin () const |
|
|
64 | { |
66 | { |
65 | return &_buf[0]; |
67 | for (char **c = begin (); c != end (); c++) |
|
|
68 | free (*c); |
66 | } |
69 | } |
67 | iterator begin () |
|
|
68 | { |
|
|
69 | return &_buf[0]; |
|
|
70 | } |
|
|
71 | const_iterator end () const |
|
|
72 | { |
|
|
73 | return &_buf[_last]; |
|
|
74 | } |
|
|
75 | iterator end () |
|
|
76 | { |
|
|
77 | return &_buf[_last]; |
|
|
78 | } |
|
|
79 | size_type capacity () const |
|
|
80 | { |
|
|
81 | return _size; |
|
|
82 | } |
|
|
83 | size_type size () const |
|
|
84 | { |
|
|
85 | return _last; |
|
|
86 | } |
|
|
87 | |
|
|
88 | private: |
|
|
89 | static T *alloc (size_type n) |
|
|
90 | { |
|
|
91 | return (T *)::operator new ((size_t) (n * sizeof (T))); |
|
|
92 | } |
|
|
93 | static void dealloc (T *buf) |
|
|
94 | { |
|
|
95 | if (buf) |
|
|
96 | ::operator delete (buf); |
|
|
97 | } |
|
|
98 | |
|
|
99 | void reserve (iterator where, size_type n) |
|
|
100 | { |
|
|
101 | if (_last + n <= _size) { |
|
|
102 | memmove (where+n, where, (end ()-where)*sizeof (T)); |
|
|
103 | } else { |
|
|
104 | size_type sz = _last+n; |
|
|
105 | sz = (_size == 0) ? max (sz, 5) : max (sz, 2*_size); |
|
|
106 | T *nbuf = alloc (sz); |
|
|
107 | if (_buf) { |
|
|
108 | memcpy (nbuf, begin (), (where-begin ())*sizeof (T)); |
|
|
109 | memcpy (nbuf + (where-begin ()) + n, where, |
|
|
110 | (end ()-where)*sizeof (T)); |
|
|
111 | dealloc (_buf); |
|
|
112 | } |
|
|
113 | _buf = nbuf; |
|
|
114 | _size = sz; |
|
|
115 | } |
|
|
116 | } |
|
|
117 | |
|
|
118 | public: |
|
|
119 | void reserve (size_type sz) |
|
|
120 | { |
|
|
121 | if (_size < sz) { |
|
|
122 | sz = (_size == 0) ? max (sz, 5) : max (sz, 2*_size); |
|
|
123 | T *nbuf = alloc (sz); |
|
|
124 | if (_buf) { |
|
|
125 | memcpy (nbuf, begin (), size ()*sizeof (T)); |
|
|
126 | dealloc (_buf); |
|
|
127 | } |
|
|
128 | _buf = nbuf; |
|
|
129 | _size = sz; |
|
|
130 | } |
|
|
131 | } |
|
|
132 | simplevec () |
|
|
133 | : _last(0), _size(0), _buf(0) |
|
|
134 | { |
|
|
135 | } |
|
|
136 | simplevec (size_type n, const T& t = T ()) |
|
|
137 | : _last(0), _size(0), _buf(0) |
|
|
138 | { |
|
|
139 | insert (begin (), n, t); |
|
|
140 | } |
|
|
141 | simplevec (const_iterator first, const_iterator last) |
|
|
142 | : _last(0), _size(0), _buf(0) |
|
|
143 | { |
|
|
144 | insert (begin (), first, last); |
|
|
145 | } |
|
|
146 | simplevec (const simplevec<T> &v) |
|
|
147 | : _last(0), _size(0), _buf(0) |
|
|
148 | { |
|
|
149 | reserve (v._last); |
|
|
150 | memcpy (_buf, v.begin (), v.size ()*sizeof (T)); |
|
|
151 | _last = v._last; |
|
|
152 | } |
|
|
153 | simplevec<T> &operator= (const simplevec<T> &v) |
|
|
154 | { |
|
|
155 | if (this != &v) { |
|
|
156 | _last = 0; |
|
|
157 | reserve (v._last); |
|
|
158 | memcpy (_buf, v.begin (), v.size ()*sizeof (T)); |
|
|
159 | _last = v._last; |
|
|
160 | } |
|
|
161 | return *this; |
|
|
162 | } |
|
|
163 | ~simplevec () |
|
|
164 | { |
|
|
165 | dealloc (_buf); |
|
|
166 | } |
|
|
167 | const T &front () const |
|
|
168 | { |
|
|
169 | //ministl_assert (size () > 0); |
|
|
170 | return _buf[0]; |
|
|
171 | } |
|
|
172 | T &front () |
|
|
173 | { |
|
|
174 | //ministl_assert (size () > 0); |
|
|
175 | return _buf[0]; |
|
|
176 | } |
|
|
177 | const T &back () const |
|
|
178 | { |
|
|
179 | //ministl_assert (size () > 0); |
|
|
180 | return _buf[_last-1]; |
|
|
181 | } |
|
|
182 | T &back () |
|
|
183 | { |
|
|
184 | //ministl_assert (size () > 0); |
|
|
185 | return _buf[_last-1]; |
|
|
186 | } |
|
|
187 | bool empty () const |
|
|
188 | { |
|
|
189 | return _last == 0; |
|
|
190 | } |
|
|
191 | void clear () |
|
|
192 | { |
|
|
193 | _last = 0; |
|
|
194 | } |
|
|
195 | void push_back (const T &t) |
|
|
196 | { |
|
|
197 | reserve (_last+1); |
|
|
198 | *end () = t; |
|
|
199 | ++_last; |
|
|
200 | } |
|
|
201 | void push_back (T &t) |
|
|
202 | { |
|
|
203 | reserve (_last+1); |
|
|
204 | *end () = t; |
|
|
205 | ++_last; |
|
|
206 | } |
|
|
207 | void pop_back () |
|
|
208 | { |
|
|
209 | //ministl_assert (size () > 0); |
|
|
210 | --_last; |
|
|
211 | } |
|
|
212 | const T &operator[] (size_type idx) const |
|
|
213 | { |
|
|
214 | //ministl_assert (idx < size ()); |
|
|
215 | return _buf[idx]; |
|
|
216 | } |
|
|
217 | T &operator[] (size_type idx) |
|
|
218 | { |
|
|
219 | //ministl_assert (idx < size ()); |
|
|
220 | return _buf[idx]; |
|
|
221 | } |
|
|
222 | iterator insert (iterator pos, const T &t) |
|
|
223 | { |
|
|
224 | //ministl_assert (pos <= end ()); |
|
|
225 | long at = pos - begin (); |
|
|
226 | reserve (pos, 1); |
|
|
227 | pos = begin ()+at; |
|
|
228 | *pos = t; |
|
|
229 | ++_last; |
|
|
230 | return pos; |
|
|
231 | } |
|
|
232 | iterator insert (iterator pos, const_iterator first, const_iterator last) |
|
|
233 | { |
|
|
234 | //ministl_assert (pos <= end ()); |
|
|
235 | long n = last - first; |
|
|
236 | long at = pos - begin (); |
|
|
237 | if (n > 0) { |
|
|
238 | reserve (pos, n); |
|
|
239 | pos = begin ()+at; |
|
|
240 | memcpy (pos, first, (last-first)*sizeof (T)); |
|
|
241 | _last += n; |
|
|
242 | } |
|
|
243 | return pos; |
|
|
244 | } |
|
|
245 | iterator insert (iterator pos, size_type n, const T &t) |
|
|
246 | { |
|
|
247 | //ministl_assert (pos <= end ()); |
|
|
248 | long at = pos - begin (); |
|
|
249 | if (n > 0) { |
|
|
250 | reserve (pos, n); |
|
|
251 | pos = begin ()+at; |
|
|
252 | for (int i = 0; i < n; ++i) |
|
|
253 | pos[i] = t; |
|
|
254 | _last += n; |
|
|
255 | } |
|
|
256 | return pos; |
|
|
257 | } |
|
|
258 | void erase (iterator first, iterator last) |
|
|
259 | { |
|
|
260 | if (last != first) { |
|
|
261 | memmove (first, last, (end ()-last)*sizeof (T)); |
|
|
262 | _last -= last - first; |
|
|
263 | } |
|
|
264 | } |
|
|
265 | void erase (iterator pos) |
|
|
266 | { |
|
|
267 | if (pos != end ()) { |
|
|
268 | memmove (pos, pos+1, (end ()- (pos+1))*sizeof (T)); |
|
|
269 | --_last; |
|
|
270 | } |
|
|
271 | } |
|
|
272 | void swap (simplevec<T> &t) |
|
|
273 | { |
|
|
274 | ::swap(_last, t._last); |
|
|
275 | ::swap(_size, t._size); |
|
|
276 | ::swap(_buf, t._buf); |
|
|
277 | } |
|
|
278 | }; |
70 | }; |
279 | |
|
|
280 | template<class T> |
|
|
281 | bool operator== (const simplevec<T> &v1, const simplevec<T> &v2) |
|
|
282 | { |
|
|
283 | if (v1.size () != v2.size ()) |
|
|
284 | return false; |
|
|
285 | return !v1.size () || !memcmp (&v1[0], &v2[0], v1.size ()*sizeof (T)); |
|
|
286 | } |
|
|
287 | |
|
|
288 | template<class T> |
|
|
289 | bool operator< (const simplevec<T> &v1, const simplevec<T> &v2) |
|
|
290 | { |
|
|
291 | unsigned long minlast = min (v1.size (), v2.size ()); |
|
|
292 | for (unsigned long i = 0; i < minlast; ++i) { |
|
|
293 | if (v1[i] < v2[i]) |
|
|
294 | return true; |
|
|
295 | if (v2[i] < v1[i]) |
|
|
296 | return false; |
|
|
297 | } |
|
|
298 | return v1.size () < v2.size (); |
|
|
299 | } |
|
|
300 | |
|
|
301 | |
|
|
302 | template<typename T> |
|
|
303 | struct vector : simplevec<T> |
|
|
304 | { }; |
|
|
305 | |
71 | |
306 | #if 0 |
72 | #if 0 |
307 | template<typename T> |
73 | template<typename T> |
308 | struct rxvt_vec : simplevec<void *> { |
74 | struct rxvt_vec : simplevec<void *> |
|
|
75 | { |
309 | typedef T *iterator; |
76 | typedef T *iterator; |
310 | |
77 | |
311 | void push_back (T d) { simplevec<void *>::push_back ((void *)d); } |
78 | void push_back (T d) { simplevec<void *>::push_back ((void *)d); } |
312 | T pop_back () { return (T*)simplevec<void *>::pop_back (); } |
79 | T pop_back () { return (T*)simplevec<void *>::pop_back (); } |
313 | void erase (int i) { erase (begin () + i); } |
80 | void erase (int i) { erase (begin () + i); } |
… | |
… | |
317 | T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } |
84 | 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])); } |
85 | const T &operator [] (int i) const { return * (const T *) (& ((* (const simplevec<void *> *)this)[i])); } |
319 | }; |
86 | }; |
320 | #endif |
87 | #endif |
321 | |
88 | |
322 | template <typename I, typename T> |
89 | template<typename T> |
323 | I find (I first, I last, const T& value) |
90 | struct auto_ptr |
324 | { |
91 | { |
325 | while (first != last && *first != value) |
|
|
326 | ++first; |
|
|
327 | |
|
|
328 | return first; |
|
|
329 | } |
|
|
330 | |
|
|
331 | template<typename T> |
|
|
332 | struct auto_ptr { |
|
|
333 | T *p; |
92 | T *p; |
334 | |
93 | |
335 | auto_ptr () : p (0) { } |
94 | auto_ptr () : p (0) { } |
336 | auto_ptr (T *a) : p (a) { } |
95 | auto_ptr (T *a) : p (a) { } |
337 | |
96 | |
… | |
… | |
348 | a.p = 0; |
107 | a.p = 0; |
349 | } |
108 | } |
350 | |
109 | |
351 | ~auto_ptr () |
110 | ~auto_ptr () |
352 | { |
111 | { |
353 | delete p; |
112 | free (p); |
|
|
113 | } |
|
|
114 | |
|
|
115 | void reset (T *a) |
|
|
116 | { |
|
|
117 | free (p); |
|
|
118 | p = a; |
354 | } |
119 | } |
355 | |
120 | |
356 | // void because it makes sense in our context |
121 | // void because it makes sense in our context |
357 | void operator = (T *a) |
|
|
358 | { |
|
|
359 | delete p; |
|
|
360 | p = a; |
|
|
361 | } |
|
|
362 | |
|
|
363 | void operator = (auto_ptr &a) |
122 | void operator = (auto_ptr &a) |
364 | { |
123 | { |
365 | *this = a.p; |
124 | *this = a.p; |
366 | a.p = 0; |
125 | a.p = 0; |
367 | } |
126 | } |
… | |
… | |
386 | } |
145 | } |
387 | }; |
146 | }; |
388 | |
147 | |
389 | typedef auto_ptr<char> auto_str; |
148 | typedef auto_ptr<char> auto_str; |
390 | |
149 | |
391 | struct stringvec : simplevec<char *> |
|
|
392 | { |
|
|
393 | ~stringvec () |
|
|
394 | { |
|
|
395 | for (char **c = begin (); c != end (); c++) |
|
|
396 | delete [] *c; |
|
|
397 | } |
|
|
398 | }; |
|
|
399 | |
|
|
400 | #endif |
150 | #endif |
401 | |
151 | |