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Comparing rxvt-unicode/src/misc.C (file contents):
Revision 1.32 by root, Wed Jan 11 00:59:58 2006 UTC vs.
Revision 1.53 by root, Sun Apr 26 01:59:53 2009 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 <pcg@goof.com>
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 2 of the License, or
14 * (at your option) any later version. 14 * (at your option) any later version.
… …
38 while (len--) 38 while (len--)
39 { 39 {
40 ssize_t l = wcrtomb (dst, *str++, mbs); 40 ssize_t l = wcrtomb (dst, *str++, mbs);
41 41
42 if (l < 0) 42 if (l < 0)
43 {
43 *dst++ = '?'; 44 *dst++ = '?';
45 wcrtomb (0, 0, mbs); // reset undefined state
46 }
44 else 47 else
45 dst += l; 48 dst += l;
46 } 49 }
47 50
48 *dst++ = 0; 51 *dst++ = 0;
… …
79 *p++ = w; 82 *p++ = w;
80 else if (w < 0x000800) 83 else if (w < 0x000800)
81 *p++ = 0xc0 | ( w >> 6), 84 *p++ = 0xc0 | ( w >> 6),
82 *p++ = 0x80 | ( w & 0x3f); 85 *p++ = 0x80 | ( w & 0x3f);
83 else if (w < 0x010000) 86 else if (w < 0x010000)
84 *p++ = 0xe0 | ( w >> 12 ), 87 *p++ = 0xe0 | ( w >> 12),
85 *p++ = 0x80 | ((w >> 6) & 0x3f), 88 *p++ = 0x80 | ((w >> 6) & 0x3f),
86 *p++ = 0x80 | ( w & 0x3f); 89 *p++ = 0x80 | ( w & 0x3f);
87 else if (w < 0x110000) 90 else if (w < 0x110000)
88 *p++ = 0xf0 | ( w >> 18), 91 *p++ = 0xf0 | ( w >> 18),
89 *p++ = 0x80 | ((w >> 12) & 0x3f), 92 *p++ = 0x80 | ((w >> 12) & 0x3f),
… …
116 if (len == 0) 119 if (len == 0)
117 break; 120 break;
118 else if (s[0] < 0x80) 121 else if (s[0] < 0x80)
119 *p++ = *s++; 122 *p++ = *s++;
120 else if (len >= 2 123 else if (len >= 2
121 && s[0] >= 0xc2 && s[0] <= 0xdf 124 && s[0] >= 0xc2 && s[0] <= 0xdf
122 && (s[1] & 0xc0) == 0x80) 125 && (s[1] & 0xc0) == 0x80)
123 { 126 {
124 *p++ = ((s[0] & 0x1f) << 6) 127 *p++ = ((s[0] & 0x1f) << 6)
125 | (s[1] & 0x3f); 128 | (s[1] & 0x3f);
126 s += 2; 129 s += 2;
… …
144 || (s[0] == 0xf4 && s[1] >= 0x80 && s[1] <= 0x8f) 147 || (s[0] == 0xf4 && s[1] >= 0x80 && s[1] <= 0x8f)
145 ) 148 )
146 && (s[2] & 0xc0) == 0x80 149 && (s[2] & 0xc0) == 0x80
147 && (s[3] & 0xc0) == 0x80) 150 && (s[3] & 0xc0) == 0x80)
148 { 151 {
149 *p++ = ((s[0] & 0x07) << 18) 152 *p++ = ((s[0] & 0x07) << 18)
150 | ((s[1] & 0x3f) << 12) 153 | ((s[1] & 0x3f) << 12)
151 | ((s[2] & 0x3f) << 6) 154 | ((s[2] & 0x3f) << 6)
152 | (s[3] & 0x3f); 155 | (s[3] & 0x3f);
153 s += 4; 156 s += 4;
154 } 157 }
155 else 158 else
156 { 159 {
… …
162 *p = 0; 165 *p = 0;
163 166
164 return r; 167 return r;
165} 168}
166 169
167char * 170const char *
168rxvt_strdup (const char *str)
169{
170 return str ? strdup (str) : 0;
171}
172
173char *
174rxvt_r_basename (const char *str) 171rxvt_basename (const char *str) NOTHROW
175{ 172{
176 char *base = strrchr (str, '/'); 173 char *base = strrchr (str, '/');
177 174
178 return (char *) (base ? base + 1 : str); 175 return (char *) (base ? base + 1 : str);
179} 176}
180 177
181/* 178/*
182 * Print an error message 179 * Print an error message
183 */ 180 */
184void 181void
185rxvt_vlog (const char *fmt, va_list arg_ptr) 182rxvt_vlog (const char *fmt, va_list arg_ptr) NOTHROW
186{ 183{
187 char msg[1024]; 184 char msg[1024];
188 185
189 vsnprintf (msg, sizeof msg, fmt, arg_ptr); 186 vsnprintf (msg, sizeof msg, fmt, arg_ptr);
190 187
… …
193 else 190 else
194 write (STDOUT_FILENO, msg, strlen (msg)); 191 write (STDOUT_FILENO, msg, strlen (msg));
195} 192}
196 193
197void 194void
198rxvt_log (const char *fmt,...) 195rxvt_log (const char *fmt,...) NOTHROW
199{ 196{
200 va_list arg_ptr; 197 va_list arg_ptr;
201 198
202 va_start (arg_ptr, fmt); 199 va_start (arg_ptr, fmt);
203 rxvt_vlog (fmt, arg_ptr); 200 rxvt_vlog (fmt, arg_ptr);
… …
206 203
207/* 204/*
208 * Print an error message 205 * Print an error message
209 */ 206 */
210void 207void
211rxvt_warn (const char *fmt,...) 208rxvt_warn (const char *fmt,...) NOTHROW
212{ 209{
213 va_list arg_ptr; 210 va_list arg_ptr;
214 211
215 rxvt_log ("%s: ", RESNAME); 212 rxvt_log ("%s: ", RESNAME);
216 213
… …
218 rxvt_vlog (fmt, arg_ptr); 215 rxvt_vlog (fmt, arg_ptr);
219 va_end (arg_ptr); 216 va_end (arg_ptr);
220} 217}
221 218
222void 219void
223rxvt_fatal (const char *fmt,...) 220rxvt_fatal (const char *fmt,...) THROW ((class rxvt_failure_exception))
224{ 221{
225 va_list arg_ptr; 222 va_list arg_ptr;
226 223
227 rxvt_log ("%s: ", RESNAME); 224 rxvt_log ("%s: ", RESNAME);
228 225
… …
231 va_end (arg_ptr); 228 va_end (arg_ptr);
232 229
233 rxvt_exit_failure (); 230 rxvt_exit_failure ();
234} 231}
235 232
233void
234rxvt_exit_failure () THROW ((class rxvt_failure_exception))
235{
236class rxvt_failure_exception rxvt_failure_exception; 236 static class rxvt_failure_exception rxvt_failure_exception;
237
238void
239rxvt_exit_failure ()
240{
241 throw (rxvt_failure_exception); 237 throw (rxvt_failure_exception);
242} 238}
243 239
244/* 240/*
245 * check that the first characters of S1 match S2 241 * remove leading/trailing space in place.
246 *
247 * No Match
248 * return: 0
249 * Match
250 * return: strlen (S2)
251 */ 242 */
252int 243char *
253rxvt_Str_match (const char *s1, const char *s2)
254{
255 int n = strlen (s2);
256
257 return ((strncmp (s1, s2, n) == 0) ? n : 0);
258}
259
260const char *
261rxvt_Str_skip_space (const char *str)
262{
263 if (str)
264 while (*str && isspace (*str))
265 str++;
266
267 return str;
268}
269
270/*
271 * remove leading/trailing space and strip-off leading/trailing quotes.
272 * in place.
273 */
274char *
275rxvt_Str_trim (char *str) 244rxvt_strtrim (char *str) NOTHROW
276{ 245{
277 char *r, *s; 246 char *r, *s;
278 247
279 if (!str || !*str) /* shortcut */ 248 if (!str || !*str) /* shortcut */
280 return str; 249 return str;
… …
287 256
288 /* dump return and other trailing whitespace */ 257 /* dump return and other trailing whitespace */
289 while (r > s && isspace (*r)) 258 while (r > s && isspace (*r))
290 r--; 259 r--;
291 260
292#if 0
293 /* skip matching leading/trailing quotes */
294 if (*s == '"' && *r == '"' && n > 1)
295 {
296 s++;
297 n -= 2;
298 }
299#endif
300
301 memmove (str, s, r + 1 - s); 261 memmove (str, s, r + 1 - s);
302 str[r + 1 - s] = 0; 262 str[r + 1 - s] = 0;
303 263
304 return str; 264 return str;
305}
306
307/*
308 * in-place interpretation of string:
309 *
310 * backslash-escaped: "\a\b\E\e\n\r\t", "\octal"
311 * Ctrl chars: ^@ .. ^_, ^?
312 *
313 * Emacs-style: "M-" prefix
314 *
315 * Also,
316 * "M-x" prefixed strings, append "\r" if needed
317 * "\E]" prefixed strings (XTerm escape sequence) append ST if needed
318 *
319 * returns the converted string length
320 */
321int
322rxvt_Str_escaped (char *str)
323{
324 char ch, *s, *d;
325 int i, num, append = 0;
326
327 if (!str || !*str)
328 return 0;
329
330 d = s = str;
331
332 if (*s == 'M' && s[1] == '-')
333 {
334 /* Emacs convenience, replace leading `M-..' with `\E..' */
335 *d++ = C0_ESC;
336 s += 2;
337 if (toupper (*s) == 'X')
338 /* append carriage-return for `M-xcommand' */
339 for (*d++ = 'x', append = '\r', s++; isspace (*s); s++) ;
340 }
341 for (; (ch = *s++);)
342 {
343 if (ch == '\\')
344 {
345 ch = *s++;
346 if (ch >= '0' && ch <= '7')
347 { /* octal */
348 num = ch - '0';
349 for (i = 0; i < 2; i++, s++)
350 {
351 ch = *s;
352 if (ch < '0' || ch > '7')
353 break;
354 num = num * 8 + ch - '0';
355 }
356 ch = (char)num;
357 }
358 else if (ch == 'a')
359 ch = C0_BEL; /* bell */
360 else if (ch == 'b')
361 ch = C0_BS; /* backspace */
362 else if (ch == 'E' || ch == 'e')
363 ch = C0_ESC; /* escape */
364 else if (ch == 'n')
365 ch = '\n'; /* newline */
366 else if (ch == 'r')
367 ch = '\r'; /* carriage-return */
368 else if (ch == 't')
369 ch = C0_HT; /* tab */
370 }
371 else if (ch == '^')
372 {
373 ch = *s++;
374 ch = toupper (ch);
375 ch = (ch == '?' ? 127 : (ch - '@'));
376 }
377 *d++ = ch;
378 }
379
380 /* ESC] is an XTerm escape sequence, must be terminated */
381 if (*str == '\0' && str[1] == C0_ESC && str[2] == ']')
382 append = CHAR_ST;
383
384 /* add trailing character as required */
385 if (append && d[-1] != append)
386 *d++ = append;
387 *d = '\0';
388
389 return (d - str);
390} 265}
391 266
392/* 267/*
393 * Split a comma-separated string into an array, stripping leading and 268 * Split a comma-separated string into an array, stripping leading and
394 * trailing spaces from each entry. Empty strings are properly returned 269 * trailing spaces from each entry. Empty strings are properly returned
395 * Caller should free each entry and array when done
396 */ 270 */
397char ** 271char **
398rxvt_splitcommastring (const char *cs) 272rxvt_splitcommastring (const char *cs) NOTHROW
399{ 273{
400 int l, n, p; 274 int l, n, p;
401 const char *s, *t; 275 const char *s, *t;
402 char **ret; 276 char **ret;
403 277
… …
414 for (l = 0, t = s; l < n; l++) 288 for (l = 0, t = s; l < n; l++)
415 { 289 {
416 for ( ; *t && *t != ','; t++) ; 290 for ( ; *t && *t != ','; t++) ;
417 p = t - s; 291 p = t - s;
418 ret[l] = (char *)malloc (p + 1); 292 ret[l] = (char *)malloc (p + 1);
419 strncpy (ret[l], s, p); 293 memcpy (ret[l], s, p);
420 ret[l][p] = '\0'; 294 ret[l][p] = '\0';
421 rxvt_Str_trim (ret[l]); 295 rxvt_strtrim (ret[l]);
422 s = ++t; 296 s = ++t;
423 } 297 }
424 298
425 return ret; 299 return ret;
426} 300}
427 301
428void 302void
429rxvt_freecommastring (char **cs) 303rxvt_freecommastring (char **cs) NOTHROW
430{ 304{
431 for (int i = 0; cs[i]; ++i) 305 for (int i = 0; cs[i]; ++i)
432 free (cs[i]); 306 free (cs[i]);
433 307
434 free (cs); 308 free (cs);
435} 309}
436 310
437/*----------------------------------------------------------------------* 311void *
438 * file searching 312rxvt_malloc (size_t size)
439 */
440
441/* #define DEBUG_SEARCH_PATH */
442
443#if defined (XPM_BACKGROUND) || (MENUBAR_MAX)
444/*
445 * search for FILE in the current working directory, and within the
446 * colon-delimited PATHLIST, adding the file extension EXT if required.
447 *
448 * FILE is either semi-colon or zero terminated
449 */
450char *
451rxvt_File_search_path (const char *pathlist, const char *file, const char *ext)
452{ 313{
453 int maxpath, len; 314 void *p = malloc (size);
454 const char *p, *path;
455 char name[256];
456 315
457 if (!access (file, R_OK)) /* found (plain name) in current directory */
458 return strdup (file);
459
460 /* semi-colon delimited */
461 if ((p = strchr (file, ';')))
462 len = (p - file);
463 else
464 len = strlen (file);
465
466#ifdef DEBUG_SEARCH_PATH
467 getcwd (name, sizeof (name));
468 fprintf (stderr, "pwd: \"%s\"\n", name);
469 fprintf (stderr, "find: \"%.*s\"\n", len, file);
470#endif
471
472 /* leave room for an extra '/' and trailing '\0' */
473 maxpath = sizeof (name) - (len + (ext ? strlen (ext) : 0) + 2);
474 if (maxpath <= 0)
475 return NULL;
476
477 /* check if we can find it now */
478 strncpy (name, file, len);
479 name[len] = '\0';
480
481 if (!access (name, R_OK))
482 return strdup (name);
483 if (ext)
484 {
485 strcat (name, ext);
486 if (!access (name, R_OK))
487 return strdup (name);
488 }
489 for (path = pathlist; path != NULL && *path != '\0'; path = p)
490 {
491 int n;
492
493 /* colon delimited */
494 if ((p = strchr (path, ':')) == NULL)
495 p = strchr (path, '\0');
496
497 n = (p - path);
498 if (*p != '\0')
499 p++;
500
501 if (n > 0 && n <= maxpath)
502 {
503 strncpy (name, path, n);
504 if (name[n - 1] != '/')
505 name[n++] = '/';
506 name[n] = '\0';
507 strncat (name, file, len);
508
509 if (!access (name, R_OK))
510 return strdup (name);
511 if (ext)
512 {
513 strcat (name, ext);
514 if (!access (name, R_OK))
515 return strdup (name);
516 }
517 }
518 }
519 return NULL;
520}
521
522char *
523rxvt_File_find (const char *file, const char *ext, const char *path)
524{
525 char *f;
526
527 if (file == NULL || *file == '\0')
528 return NULL;
529
530 f = rxvt_File_search_path (path, file, ext);
531
532#ifdef DEBUG_SEARCH_PATH
533 if (f) 316 if (!p)
534 fprintf (stderr, "found: \"%s\"\n", f); 317 rxvt_fatal ("memory allocation failure. aborting.\n");
535#endif
536 318
537 return f; 319 return p;
538} 320}
539#endif /* defined (XPM_BACKGROUND) || (MENUBAR_MAX) */
540 321
541/*----------------------------------------------------------------------*
542 * miscellaneous drawing routines
543 */
544
545/*
546 * Draw top/left and bottom/right border shadows around windows
547 */
548#if defined(RXVT_SCROLLBAR) || defined(MENUBAR)
549void 322void *
550rxvt_Draw_Shadow (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int h) 323rxvt_calloc (size_t number, size_t size)
551{ 324{
552 int shadow; 325 void *p = calloc (number, size);
553 326
554 shadow = (w == 0 || h == 0) ? 1 : MENU_SHADOW; 327 if (!p)
555 w += x - 1; 328 rxvt_fatal ("memory allocation failure. aborting.\n");
556 h += y - 1;
557 for (; shadow-- > 0; x++, y++, w--, h--)
558 {
559 XDrawLine (display, win, topShadow, x, y, w, y);
560 XDrawLine (display, win, topShadow, x, y, x, h);
561 XDrawLine (display, win, botShadow, w, h, w, y + 1);
562 XDrawLine (display, win, botShadow, w, h, x + 1, h);
563 }
564}
565#endif
566 329
567/* button shapes */ 330 return p;
568#ifdef MENUBAR 331}
332
569void 333void *
570rxvt_Draw_Triangle (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int type) 334rxvt_realloc (void *ptr, size_t size)
571{ 335{
572 switch (type) 336 void *p = realloc (ptr, size);
573 {
574 case 'r': /* right triangle */
575 XDrawLine (display, win, topShadow, x, y, x, y + w);
576 XDrawLine (display, win, topShadow, x, y, x + w, y + w / 2);
577 XDrawLine (display, win, botShadow, x, y + w, x + w, y + w / 2);
578 break;
579 337
580 case 'l': /* left triangle */ 338 if (!p)
581 XDrawLine (display, win, botShadow, x + w, y + w, x + w, y); 339 rxvt_fatal ("memory allocation failure. aborting.\n");
582 XDrawLine (display, win, botShadow, x + w, y + w, x, y + w / 2);
583 XDrawLine (display, win, topShadow, x, y + w / 2, x + w, y);
584 break;
585 340
586 case 'd': /* down triangle */ 341 return p;
587 XDrawLine (display, win, topShadow, x, y, x + w / 2, y + w);
588 XDrawLine (display, win, topShadow, x, y, x + w, y);
589 XDrawLine (display, win, botShadow, x + w, y, x + w / 2, y + w);
590 break;
591
592 case 'u': /* up triangle */
593 XDrawLine (display, win, botShadow, x + w, y + w, x + w / 2, y);
594 XDrawLine (display, win, botShadow, x + w, y + w, x, y + w);
595 XDrawLine (display, win, topShadow, x, y + w, x + w / 2, y);
596 break;
597#if 0
598 case 's': /* square */
599 XDrawLine (display, win, topShadow, x + w, y, x, y);
600 XDrawLine (display, win, topShadow, x, y, x, y + w);
601 XDrawLine (display, win, botShadow, x, y + w, x + w, y + w);
602 XDrawLine (display, win, botShadow, x + w, y + w, x + w, y);
603 break;
604#endif
605
606 }
607} 342}
608#endif
609
610// should not be used in interactive programs, for obvious reasons
611void rxvt_usleep (int usecs)
612{
613#if HAVE_NANOSLEEP
614 struct timespec ts;
615
616 ts.tv_sec = 0;
617 ts.tv_nsec = usecs * 1000;
618 nanosleep (&ts, NULL);
619#else
620 /* use select for timing */
621 struct timeval tv;
622
623 tv.tv_sec = 0;
624 tv.tv_usec = usecs;
625 select (0, NULL, NULL, NULL, &tv);
626#endif
627}
628
629/*----------------------- end-of-file (C source) -----------------------*/
630

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