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Comparing rxvt-unicode/src/misc.C (file contents):
Revision 1.36 by root, Fri Jan 20 10:27:08 2006 UTC vs.
Revision 1.59 by sf-exg, Wed Nov 12 12:12:02 2014 UTC

1/*--------------------------------*-C-*---------------------------------* 1/*----------------------------------------------------------------------*
2 * File: misc.C 2 * File: misc.C
3 *----------------------------------------------------------------------* 3 *----------------------------------------------------------------------*
4 * 4 *
5 * All portions of code are copyright by their respective author/s. 5 * All portions of code are copyright by their respective author/s.
6 * Copyright (c) 1996 mj olesen <olesen@me.QueensU.CA> Queen's Univ at Kingston 6 * Copyright (c) 1996 mj olesen <olesen@me.QueensU.CA> Queen's Univ at Kingston
7 * Copyright (c) 1997,1998 Oezguer Kesim <kesim@math.fu-berlin.de> 7 * Copyright (c) 1997,1998 Oezguer Kesim <kesim@math.fu-berlin.de>
8 * Copyright (c) 1998-2000 Geoff Wing <gcw@pobox.com> 8 * Copyright (c) 1998-2000 Geoff Wing <gcw@pobox.com>
9 * Copyright (c) 2003-2004 Marc Lehmann <pcg@goof.com> 9 * Copyright (c) 2003-2006 Marc Lehmann <schmorp@schmorp.de>
10 * 10 *
11 * This program is free software; you can redistribute it and/or modify 11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by 12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or 13 * the Free Software Foundation; either version 3 of the License, or
14 * (at your option) any later version. 14 * (at your option) any later version.
15 * 15 *
16 * This program is distributed in the hope that it will be useful, 16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 *----------------------------------------------------------------------*/ 24 *----------------------------------------------------------------------*/
25 25
26#include "../config.h" /* NECESSARY */ 26#include "../config.h" /* NECESSARY */
27#include "rxvt.h" /* NECESSARY */ 27#include "rxvt.h" /* NECESSARY */
28 28
29#include <new>
30
31// alas new/delete cannot be specified as inline in C++11 (see 17.6.4.6)
32void *
33operator new (size_t s)
34#if !ECB_CPP11
35 throw (std::bad_alloc)
36#endif
37{
38 return rxvt_malloc (s);
39}
40
41void
42operator delete (void *p)
43#if ECB_CPP11
44 noexcept
45#else
46 throw ()
47#endif
48{
49 free (p);
50}
51
29char * 52char *
30rxvt_wcstombs (const wchar_t *str, int len) 53rxvt_wcstombs (const wchar_t *str, int len)
31{ 54{
32 if (len < 0) len = wcslen (str); 55 if (len < 0) len = wcslen (str);
33 56
38 while (len--) 61 while (len--)
39 { 62 {
40 ssize_t l = wcrtomb (dst, *str++, mbs); 63 ssize_t l = wcrtomb (dst, *str++, mbs);
41 64
42 if (l < 0) 65 if (l < 0)
66 {
43 *dst++ = '?'; 67 *dst++ = '?';
68 wcrtomb (0, 0, mbs); // reset undefined state
69 }
44 else 70 else
45 dst += l; 71 dst += l;
46 } 72 }
47 73
48 *dst++ = 0; 74 *dst++ = 0;
79 *p++ = w; 105 *p++ = w;
80 else if (w < 0x000800) 106 else if (w < 0x000800)
81 *p++ = 0xc0 | ( w >> 6), 107 *p++ = 0xc0 | ( w >> 6),
82 *p++ = 0x80 | ( w & 0x3f); 108 *p++ = 0x80 | ( w & 0x3f);
83 else if (w < 0x010000) 109 else if (w < 0x010000)
84 *p++ = 0xe0 | ( w >> 12 ), 110 *p++ = 0xe0 | ( w >> 12),
85 *p++ = 0x80 | ((w >> 6) & 0x3f), 111 *p++ = 0x80 | ((w >> 6) & 0x3f),
86 *p++ = 0x80 | ( w & 0x3f); 112 *p++ = 0x80 | ( w & 0x3f);
87 else if (w < 0x110000) 113 else if (w < 0x110000)
88 *p++ = 0xf0 | ( w >> 18), 114 *p++ = 0xf0 | ( w >> 18),
89 *p++ = 0x80 | ((w >> 12) & 0x3f), 115 *p++ = 0x80 | ((w >> 12) & 0x3f),
116 if (len == 0) 142 if (len == 0)
117 break; 143 break;
118 else if (s[0] < 0x80) 144 else if (s[0] < 0x80)
119 *p++ = *s++; 145 *p++ = *s++;
120 else if (len >= 2 146 else if (len >= 2
121 && s[0] >= 0xc2 && s[0] <= 0xdf 147 && s[0] >= 0xc2 && s[0] <= 0xdf
122 && (s[1] & 0xc0) == 0x80) 148 && (s[1] & 0xc0) == 0x80)
123 { 149 {
124 *p++ = ((s[0] & 0x1f) << 6) 150 *p++ = ((s[0] & 0x1f) << 6)
125 | (s[1] & 0x3f); 151 | (s[1] & 0x3f);
126 s += 2; 152 s += 2;
144 || (s[0] == 0xf4 && s[1] >= 0x80 && s[1] <= 0x8f) 170 || (s[0] == 0xf4 && s[1] >= 0x80 && s[1] <= 0x8f)
145 ) 171 )
146 && (s[2] & 0xc0) == 0x80 172 && (s[2] & 0xc0) == 0x80
147 && (s[3] & 0xc0) == 0x80) 173 && (s[3] & 0xc0) == 0x80)
148 { 174 {
149 *p++ = ((s[0] & 0x07) << 18) 175 *p++ = ((s[0] & 0x07) << 18)
150 | ((s[1] & 0x3f) << 12) 176 | ((s[1] & 0x3f) << 12)
151 | ((s[2] & 0x3f) << 6) 177 | ((s[2] & 0x3f) << 6)
152 | (s[3] & 0x3f); 178 | (s[3] & 0x3f);
153 s += 4; 179 s += 4;
154 } 180 }
155 else 181 else
156 { 182 {
162 *p = 0; 188 *p = 0;
163 189
164 return r; 190 return r;
165} 191}
166 192
167char * 193const char *
168rxvt_r_basename (const char *str) NOTHROW 194rxvt_basename (const char *str) NOTHROW
169{ 195{
170 char *base = strrchr (str, '/'); 196 const char *base = strrchr (str, '/');
171 197
172 return (char *) (base ? base + 1 : str); 198 return base ? base + 1 : str;
173} 199}
174 200
175/* 201/*
176 * Print an error message 202 * Print an error message
177 */ 203 */
233 static class rxvt_failure_exception rxvt_failure_exception; 259 static class rxvt_failure_exception rxvt_failure_exception;
234 throw (rxvt_failure_exception); 260 throw (rxvt_failure_exception);
235} 261}
236 262
237/* 263/*
238 * check that the first characters of S1 match S2 264 * remove leading/trailing space in place.
239 *
240 * No Match
241 * return: 0
242 * Match
243 * return: strlen (S2)
244 */ 265 */
245int 266char *
246rxvt_Str_match (const char *s1, const char *s2) NOTHROW
247{
248 int n = strlen (s2);
249
250 return ((strncmp (s1, s2, n) == 0) ? n : 0);
251}
252
253const char *
254rxvt_Str_skip_space (const char *str) NOTHROW
255{
256 if (str)
257 while (*str && isspace (*str))
258 str++;
259
260 return str;
261}
262
263/*
264 * remove leading/trailing space and strip-off leading/trailing quotes.
265 * in place.
266 */
267char *
268rxvt_Str_trim (char *str) NOTHROW 267rxvt_strtrim (char *str) NOTHROW
269{ 268{
270 char *r, *s; 269 char *r, *s;
271 270
272 if (!str || !*str) /* shortcut */ 271 if (!str || !*str) /* shortcut */
273 return str; 272 return str;
280 279
281 /* dump return and other trailing whitespace */ 280 /* dump return and other trailing whitespace */
282 while (r > s && isspace (*r)) 281 while (r > s && isspace (*r))
283 r--; 282 r--;
284 283
285#if 0
286 /* skip matching leading/trailing quotes */
287 if (*s == '"' && *r == '"' && n > 1)
288 {
289 s++;
290 n -= 2;
291 }
292#endif
293
294 memmove (str, s, r + 1 - s); 284 memmove (str, s, r + 1 - s);
295 str[r + 1 - s] = 0; 285 str[r + 1 - s] = 0;
296 286
297 return str; 287 return str;
298} 288}
299 289
300/* 290/*
301 * in-place interpretation of string: 291 * Split a string into an array based on the given delimiter, stripping leading and
302 * 292 * trailing spaces from each entry. Empty strings are properly returned
303 * backslash-escaped: "\a\b\E\e\n\r\t", "\octal"
304 * Ctrl chars: ^@ .. ^_, ^?
305 *
306 * Emacs-style: "M-" prefix
307 *
308 * Also,
309 * "M-x" prefixed strings, append "\r" if needed
310 * "\E]" prefixed strings (XTerm escape sequence) append ST if needed
311 *
312 * returns the converted string length
313 */ 293 */
314int 294char **
315rxvt_Str_escaped (char *str) NOTHROW 295rxvt_strsplit (char delim, const char *str) NOTHROW
316{ 296{
317 char ch, *s, *d; 297 int l, n;
318 int i, num, append = 0; 298 char *s, *t;
299 char **ret;
319 300
320 if (!str || !*str) 301 s = strdup (str ? str : "");
321 return 0;
322
323 d = s = str;
324
325 if (*s == 'M' && s[1] == '-')
326 {
327 /* Emacs convenience, replace leading `M-..' with `\E..' */
328 *d++ = C0_ESC;
329 s += 2;
330 if (toupper (*s) == 'X')
331 /* append carriage-return for `M-xcommand' */
332 for (*d++ = 'x', append = '\r', s++; isspace (*s); s++) ;
333 }
334 for (; (ch = *s++);)
335 {
336 if (ch == '\\')
337 {
338 ch = *s++;
339 if (ch >= '0' && ch <= '7')
340 { /* octal */
341 num = ch - '0';
342 for (i = 0; i < 2; i++, s++)
343 {
344 ch = *s;
345 if (ch < '0' || ch > '7')
346 break;
347 num = num * 8 + ch - '0';
348 }
349 ch = (char)num;
350 }
351 else if (ch == 'a')
352 ch = C0_BEL; /* bell */
353 else if (ch == 'b')
354 ch = C0_BS; /* backspace */
355 else if (ch == 'E' || ch == 'e')
356 ch = C0_ESC; /* escape */
357 else if (ch == 'n')
358 ch = '\n'; /* newline */
359 else if (ch == 'r')
360 ch = '\r'; /* carriage-return */
361 else if (ch == 't')
362 ch = C0_HT; /* tab */
363 }
364 else if (ch == '^')
365 {
366 ch = *s++;
367 ch = toupper (ch);
368 ch = (ch == '?' ? 127 : (ch - '@'));
369 }
370 *d++ = ch;
371 }
372
373 /* ESC] is an XTerm escape sequence, must be terminated */
374 if (*str == '\0' && str[1] == C0_ESC && str[2] == ']')
375 append = CHAR_ST;
376
377 /* add trailing character as required */
378 if (append && d[-1] != append)
379 *d++ = append;
380 *d = '\0';
381
382 return (d - str);
383}
384
385/*
386 * Split a comma-separated string into an array, stripping leading and
387 * trailing spaces from each entry. Empty strings are properly returned
388 * Caller should free each entry and array when done
389 */
390char **
391rxvt_splitcommastring (const char *cs) NOTHROW
392{
393 int l, n, p;
394 const char *s, *t;
395 char **ret;
396
397 if ((s = cs) == NULL)
398 s = "";
399 302
400 for (n = 1, t = s; *t; t++) 303 for (n = 1, t = s; *t; t++)
401 if (*t == ',') 304 if (*t == delim)
402 n++; 305 n++;
403 306
404 ret = (char **)malloc ((n + 1) * sizeof (char *)); 307 ret = (char **)malloc ((n + 1) * sizeof (char *));
405 ret[n] = NULL; 308 ret[n] = NULL;
406 309
407 for (l = 0, t = s; l < n; l++) 310 for (l = 0, t = s; l < n; l++)
408 { 311 {
409 for ( ; *t && *t != ','; t++) ; 312 for (; *t && *t != delim; t++)
410 p = t - s; 313 ;
411 ret[l] = (char *)malloc (p + 1); 314 *t = '\0';
412 strncpy (ret[l], s, p);
413 ret[l][p] = '\0'; 315 ret[l] = s;
414 rxvt_Str_trim (ret[l]); 316 rxvt_strtrim (ret[l]);
415 s = ++t; 317 s = ++t;
416 } 318 }
417 319
418 return ret; 320 return ret;
419} 321}
420 322
421void 323void *
422rxvt_freecommastring (char **cs) NOTHROW 324rxvt_malloc (size_t size)
423{ 325{
424 for (int i = 0; cs[i]; ++i) 326 void *p = malloc (size);
425 free (cs[i]);
426 327
427 free (cs);
428}
429
430/*----------------------------------------------------------------------*
431 * file searching
432 */
433
434/* #define DEBUG_SEARCH_PATH */
435
436#ifdef XPM_BACKGROUND
437/*
438 * search for FILE in the current working directory, and within the
439 * colon-delimited PATHLIST, adding the file extension EXT if required.
440 *
441 * FILE is either semi-colon or zero terminated
442 */
443char *
444rxvt_File_search_path (const char *pathlist, const char *file, const char *ext) NOTHROW
445{
446 int maxpath, len;
447 const char *p, *path;
448 char name[256];
449
450 if (!access (file, R_OK)) /* found (plain name) in current directory */
451 return strdup (file);
452
453 /* semi-colon delimited */
454 if ((p = strchr (file, ';')))
455 len = (p - file);
456 else
457 len = strlen (file);
458
459#ifdef DEBUG_SEARCH_PATH
460 getcwd (name, sizeof (name));
461 fprintf (stderr, "pwd: \"%s\"\n", name);
462 fprintf (stderr, "find: \"%.*s\"\n", len, file);
463#endif
464
465 /* leave room for an extra '/' and trailing '\0' */
466 maxpath = sizeof (name) - (len + (ext ? strlen (ext) : 0) + 2);
467 if (maxpath <= 0)
468 return NULL;
469
470 /* check if we can find it now */
471 strncpy (name, file, len);
472 name[len] = '\0';
473
474 if (!access (name, R_OK))
475 return strdup (name);
476 if (ext)
477 {
478 strcat (name, ext);
479 if (!access (name, R_OK))
480 return strdup (name);
481 }
482 for (path = pathlist; path != NULL && *path != '\0'; path = p)
483 {
484 int n;
485
486 /* colon delimited */
487 if ((p = strchr (path, ':')) == NULL)
488 p = strchr (path, '\0');
489
490 n = (p - path);
491 if (*p != '\0')
492 p++;
493
494 if (n > 0 && n <= maxpath)
495 {
496 strncpy (name, path, n);
497 if (name[n - 1] != '/')
498 name[n++] = '/';
499 name[n] = '\0';
500 strncat (name, file, len);
501
502 if (!access (name, R_OK))
503 return strdup (name);
504 if (ext)
505 {
506 strcat (name, ext);
507 if (!access (name, R_OK))
508 return strdup (name);
509 }
510 }
511 }
512 return NULL;
513}
514
515char *
516rxvt_File_find (const char *file, const char *ext, const char *path) NOTHROW
517{
518 char *f;
519
520 if (file == NULL || *file == '\0')
521 return NULL;
522
523 f = rxvt_File_search_path (path, file, ext);
524
525#ifdef DEBUG_SEARCH_PATH
526 if (f) 328 if (!p)
527 fprintf (stderr, "found: \"%s\"\n", f); 329 rxvt_fatal ("memory allocation failure. aborting.\n");
528#endif
529 330
530 return f; 331 return p;
531} 332}
532#endif
533 333
534// should not be used in interactive programs, for obvious reasons 334void *
535void rxvt_usleep (int usecs) NOTHROW 335rxvt_calloc (size_t number, size_t size)
536{ 336{
537#if HAVE_NANOSLEEP 337 void *p = calloc (number, size);
538 struct timespec ts;
539 338
540 ts.tv_sec = 0; 339 if (!p)
541 ts.tv_nsec = usecs * 1000; 340 rxvt_fatal ("memory allocation failure. aborting.\n");
542 nanosleep (&ts, NULL);
543#else
544 /* use select for timing */
545 struct timeval tv;
546 341
547 tv.tv_sec = 0; 342 return p;
548 tv.tv_usec = usecs;
549 select (0, NULL, NULL, NULL, &tv);
550#endif
551} 343}
552 344
553/*----------------------- end-of-file (C source) -----------------------*/ 345void *
346rxvt_realloc (void *ptr, size_t size)
347{
348 void *p = realloc (ptr, size);
554 349
350 if (!p)
351 rxvt_fatal ("memory allocation failure. aborting.\n");
352
353 return p;
354}
355
356KeySym
357rxvt_XKeycodeToKeysym (Display *dpy, KeyCode code, int index)
358{
359 int size;
360 KeySym *mapping = XGetKeyboardMapping (dpy, code, 1, &size);
361 KeySym keysym = IN_RANGE_EXC (index, 0, size) ? mapping[index] : NoSymbol;
362 XFree (mapping);
363 return keysym;
364}

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