rxvt-unicode/src/misc.C

/*----------------------------------------------------------------------*
 * File:        misc.C
 *----------------------------------------------------------------------*
 *
 * All portions of code are copyright by their respective author/s.
 * Copyright (c) 1996      mj olesen <olesen@me.QueensU.CA> Queen's Univ at Kingston
 * Copyright (c) 1997,1998 Oezguer Kesim <kesim@math.fu-berlin.de>
 * Copyright (c) 1998-2000 Geoff Wing <gcw@pobox.com>
 * Copyright (c) 2003-2006 Marc Lehmann <pcg@goof.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *----------------------------------------------------------------------*/

#include "../config.h"          /* NECESSARY */
#include "rxvt.h"               /* NECESSARY */

char *
rxvt_wcstombs (const wchar_t *str, int len)
{
  if (len < 0) len = wcslen (str);

  mbstate mbs;
  char *r = (char *)rxvt_malloc (len * MB_CUR_MAX + 1);

  char *dst = r;
  while (len--)
    {
      ssize_t l = wcrtomb (dst, *str++, mbs);

      if (l < 0)
        {
          *dst++ = '?';
          wcrtomb (0, 0, mbs); // reset undefined state
        }
      else
        dst += l;
    }

  *dst++ = 0;

  return (char *)rxvt_realloc (r, dst - r);
}

wchar_t *
rxvt_mbstowcs (const char *str, int len)
{
  if (len < 0) len = strlen (str);

  wchar_t *r = (wchar_t *)rxvt_malloc ((len + 1) * sizeof (wchar_t));

  if ((ssize_t)mbstowcs (r, str, len + 1) < 0)
    *r = 0;

  return r;
}

char *
rxvt_wcstoutf8 (const wchar_t *str, int len)
{
  if (len < 0) len = wcslen (str);

  char *r = (char *)rxvt_malloc (len * 4 + 1);
  char *p = r;

  while (len--)
    {
      unicode_t w = *str++ & UNICODE_MASK;

      if      (w < 0x000080)
        *p++ = w;
      else if (w < 0x000800)
        *p++ = 0xc0 | ( w >>  6),
        *p++ = 0x80 | ( w        & 0x3f);
      else if (w < 0x010000)
        *p++ = 0xe0 | ( w >> 12),
        *p++ = 0x80 | ((w >>  6) & 0x3f),
        *p++ = 0x80 | ( w        & 0x3f);
      else if (w < 0x110000)
        *p++ = 0xf0 | ( w >> 18),
        *p++ = 0x80 | ((w >> 12) & 0x3f),
        *p++ = 0x80 | ((w >>  6) & 0x3f),
        *p++ = 0x80 | ( w        & 0x3f);
      else
        *p++ = '?';
    }

  *p++ = 0;

  return (char *)rxvt_realloc (r, p - r);
}

wchar_t *
rxvt_utf8towcs (const char *str, int len)
{
  if (len < 0) len = strlen (str);

  wchar_t *r = (wchar_t *)rxvt_malloc ((len + 1) * sizeof (wchar_t)),
          *p = r;

  unsigned char *s = (unsigned char *)str,
                *e = s + len;

  for (;;)
    {
      len = e - s;

      if (len == 0)
        break;
      else if (s[0] < 0x80)
        *p++ = *s++;
      else if (len >= 2
               && s[0] >= 0xc2 && s[0] <= 0xdf
               && (s[1] & 0xc0) == 0x80)
        {
          *p++ = ((s[0] & 0x1f) << 6)
               |  (s[1] & 0x3f);
          s += 2;
        }
      else if (len >= 3
               && (   (s[0] == 0xe0                 && s[1] >= 0xa0 && s[1] <= 0xbf)
                   || (s[0] >= 0xe1 && s[0] <= 0xec && s[1] >= 0x80 && s[1] <= 0xbf)
                   || (s[0] == 0xed                 && s[1] >= 0x80 && s[1] <= 0x9f)
                   || (s[0] >= 0xee && s[0] <= 0xef && s[1] >= 0x80 && s[1] <= 0xbf)
                  )
               && (s[2] & 0xc0) == 0x80)
        {
          *p++ = ((s[0] & 0x0f) << 12)
               | ((s[1] & 0x3f) <<  6)
               |  (s[2] & 0x3f);
          s += 3;
        }
      else if (len >= 4
               && (   (s[0] == 0xf0                 && s[1] >= 0x90 && s[1] <= 0xbf)
                   || (s[0] >= 0xf1 && s[0] <= 0xf3 && s[1] >= 0x80 && s[1] <= 0xbf)
                   || (s[0] == 0xf4                 && s[1] >= 0x80 && s[1] <= 0x8f)
                  )
               && (s[2] & 0xc0) == 0x80
               && (s[3] & 0xc0) == 0x80)
        {
          *p++ = ((s[0] & 0x07) << 18)
               | ((s[1] & 0x3f) << 12)
               | ((s[2] & 0x3f) <<  6)
               |  (s[3] & 0x3f);
          s += 4;
        }
      else
        {
          *p++ = 0xfffd;
          s++;
        }
    }

  *p = 0;

  return r;
}

const char *
rxvt_basename (const char *str) NOTHROW
{
  const char *base = strrchr (str, '/');

  return base ? base + 1 : str;
}

/*
 * Print an error message
 */
void
rxvt_vlog (const char *fmt, va_list arg_ptr) NOTHROW
{
  char msg[1024];

  vsnprintf (msg, sizeof msg, fmt, arg_ptr);

  if (GET_R && GET_R->log_hook)
    (*GET_R->log_hook) (msg);
  else
    write (STDOUT_FILENO, msg, strlen (msg));
}

void
rxvt_log (const char *fmt,...) NOTHROW
{
  va_list arg_ptr;

  va_start (arg_ptr, fmt);
  rxvt_vlog (fmt, arg_ptr);
  va_end (arg_ptr);
}

/*
 * Print an error message
 */
void
rxvt_warn (const char *fmt,...) NOTHROW
{
  va_list arg_ptr;

  rxvt_log ("%s: ", RESNAME);

  va_start (arg_ptr, fmt);
  rxvt_vlog (fmt, arg_ptr);
  va_end (arg_ptr);
}

void
rxvt_fatal (const char *fmt,...) THROW ((class rxvt_failure_exception))
{
  va_list arg_ptr;

  rxvt_log ("%s: ", RESNAME);

  va_start (arg_ptr, fmt);
  rxvt_vlog (fmt, arg_ptr);
  va_end (arg_ptr);

  rxvt_exit_failure ();
}

void
rxvt_exit_failure () THROW ((class rxvt_failure_exception))
{
  static class rxvt_failure_exception rxvt_failure_exception;
  throw (rxvt_failure_exception);
}

/*
 * remove leading/trailing space in place.
 */
char *
rxvt_strtrim (char *str) NOTHROW
{
  char *r, *s;

  if (!str || !*str)            /* shortcut */
    return str;

  /* skip leading spaces */
  for (s = str; *s && isspace (*s); s++) ;

  /* goto end of string */
  r = s + strlen (s) - 1;

  /* dump return and other trailing whitespace */
  while (r > s && isspace (*r))
    r--;

  memmove (str, s, r + 1 - s);
  str[r + 1 - s] = 0;

  return str;
}

/*
 * Split a comma-separated string into an array, stripping leading and
 * trailing spaces from each entry.  Empty strings are properly returned
 */
char **
rxvt_splitcommastring (const char *cs) NOTHROW
{
  int             l, n, p;
  const char     *s, *t;
  char          **ret;

  if ((s = cs) == NULL)
    s = "";

  for (n = 1, t = s; *t; t++)
    if (*t == ',')
      n++;

  ret = (char **)malloc ((n + 1) * sizeof (char *));
  ret[n] = NULL;

  for (l = 0, t = s; l < n; l++)
    {
      for ( ; *t && *t != ','; t++) ;
      p = t - s;
      ret[l] = (char *)malloc (p + 1);
      memcpy (ret[l], s, p);
      ret[l][p] = '\0';
      rxvt_strtrim (ret[l]);
      s = ++t;
    }

  return ret;
}

void
rxvt_freecommastring (char **cs) NOTHROW
{
  for (int i = 0; cs[i]; ++i)
    free (cs[i]);

  free (cs);
}

void *
rxvt_malloc (size_t size)
{
  void *p = malloc (size);

  if (!p)
    rxvt_fatal ("memory allocation failure. aborting.\n");

  return p;
}

void *
rxvt_calloc (size_t number, size_t size)
{
  void *p = calloc (number, size);

  if (!p)
    rxvt_fatal ("memory allocation failure. aborting.\n");

  return p;
}

void *
rxvt_realloc (void *ptr, size_t size)
{
  void *p = realloc (ptr, size);

  if (!p)
    rxvt_fatal ("memory allocation failure. aborting.\n");

  return p;
}
Revision:	1.54
Committed:	Sat May 30 06:56:20 2009 UTC (14 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	before_dynamic_fontidx, rel-9_10, dynamic_fontidx, rel-9_09, rel-9_07
Changes since 1.53:	+2 -2 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.40	/----------------------------------------------------------------------
2	pcg	1.13	* File: misc.C
3	pcg	1.1	----------------------------------------------------------------------
4			*
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
7			* Copyright (c) 1997,1998 Oezguer Kesim <kesim@math.fu-berlin.de>
8			* Copyright (c) 1998-2000 Geoff Wing <gcw@pobox.com>
9	root	1.39	* Copyright (c) 2003-2006 Marc Lehmann <pcg@goof.com>
10	pcg	1.1	*
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
13			* the Free Software Foundation; either version 2 of the License, or
14			* (at your option) any later version.
15			*
16			* This program is distributed in the hope that it will be useful,
17			* but WITHOUT ANY WARRANTY; without even the implied warranty of
18			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19			* GNU General Public License for more details.
20			*
21			* You should have received a copy of the GNU General Public License
22			* along with this program; if not, write to the Free Software
23			* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24			----------------------------------------------------------------------/
25
26			#include "../config.h" /* NECESSARY */
27			#include "rxvt.h" /* NECESSARY */
28
29	pcg	1.3	char *
30	pcg	1.10	rxvt_wcstombs (const wchar_t *str, int len)
31			{
32	root	1.19	if (len < 0) len = wcslen (str);
33
34	pcg	1.10	mbstate mbs;
35			char r = (char )rxvt_malloc (len * MB_CUR_MAX + 1);
36
37			char *dst = r;
38			while (len--)
39			{
40	root	1.24	ssize_t l = wcrtomb (dst, *str++, mbs);
41	root	1.31
42	pcg	1.10	if (l < 0)
43	root	1.52	{
44			*dst++ = '?';
45			wcrtomb (0, 0, mbs); // reset undefined state
46			}
47	pcg	1.10	else
48			dst += l;
49			}
50
51			*dst++ = 0;
52
53	root	1.24	return (char *)rxvt_realloc (r, dst - r);
54	pcg	1.10	}
55
56	root	1.19	wchar_t *
57			rxvt_mbstowcs (const char *str, int len)
58			{
59			if (len < 0) len = strlen (str);
60
61			wchar_t r = (wchar_t )rxvt_malloc ((len + 1) * sizeof (wchar_t));
62
63	root	1.24	if ((ssize_t)mbstowcs (r, str, len + 1) < 0)
64	root	1.19	*r = 0;
65
66			return r;
67			}
68
69			char *
70			rxvt_wcstoutf8 (const wchar_t *str, int len)
71			{
72			if (len < 0) len = wcslen (str);
73
74			char r = (char )rxvt_malloc (len * 4 + 1);
75			char *p = r;
76
77			while (len--)
78			{
79	root	1.22	unicode_t w = *str++ & UNICODE_MASK;
80	root	1.19
81			if (w < 0x000080)
82			*p++ = w;
83			else if (w < 0x000800)
84			*p++ = 0xc0 \| ( w >> 6),
85			*p++ = 0x80 \| ( w & 0x3f);
86			else if (w < 0x010000)
87	ayin	1.48	*p++ = 0xe0 \| ( w >> 12),
88	root	1.19	*p++ = 0x80 \| ((w >> 6) & 0x3f),
89			*p++ = 0x80 \| ( w & 0x3f);
90			else if (w < 0x110000)
91			*p++ = 0xf0 \| ( w >> 18),
92			*p++ = 0x80 \| ((w >> 12) & 0x3f),
93			*p++ = 0x80 \| ((w >> 6) & 0x3f),
94			*p++ = 0x80 \| ( w & 0x3f);
95			else
96			*p++ = '?';
97			}
98
99	root	1.24	*p++ = 0;
100	root	1.19
101	root	1.24	return (char *)rxvt_realloc (r, p - r);
102	root	1.19	}
103
104			wchar_t *
105			rxvt_utf8towcs (const char *str, int len)
106			{
107			if (len < 0) len = strlen (str);
108
109	root	1.21	wchar_t r = (wchar_t )rxvt_malloc ((len + 1) * sizeof (wchar_t)),
110			*p = r;
111	root	1.19
112	root	1.21	unsigned char s = (unsigned char )str,
113			*e = s + len;
114	root	1.19
115	root	1.21	for (;;)
116	root	1.19	{
117	root	1.21	len = e - s;
118
119			if (len == 0)
120			break;
121			else if (s[0] < 0x80)
122			p++ = s++;
123			else if (len >= 2
124	ayin	1.49	&& s[0] >= 0xc2 && s[0] <= 0xdf
125	root	1.19	&& (s[1] & 0xc0) == 0x80)
126			{
127			*p++ = ((s[0] & 0x1f) << 6)
128			\| (s[1] & 0x3f);
129	root	1.21	s += 2;
130	root	1.19	}
131	root	1.21	else if (len >= 3
132	root	1.19	&& ( (s[0] == 0xe0 && s[1] >= 0xa0 && s[1] <= 0xbf)
133			\|\| (s[0] >= 0xe1 && s[0] <= 0xec && s[1] >= 0x80 && s[1] <= 0xbf)
134			\|\| (s[0] == 0xed && s[1] >= 0x80 && s[1] <= 0x9f)
135			\|\| (s[0] >= 0xee && s[0] <= 0xef && s[1] >= 0x80 && s[1] <= 0xbf)
136			)
137			&& (s[2] & 0xc0) == 0x80)
138			{
139			*p++ = ((s[0] & 0x0f) << 12)
140			\| ((s[1] & 0x3f) << 6)
141			\| (s[2] & 0x3f);
142	root	1.21	s += 3;
143	root	1.19	}
144	root	1.21	else if (len >= 4
145	root	1.19	&& ( (s[0] == 0xf0 && s[1] >= 0x90 && s[1] <= 0xbf)
146			\|\| (s[0] >= 0xf1 && s[0] <= 0xf3 && s[1] >= 0x80 && s[1] <= 0xbf)
147			\|\| (s[0] == 0xf4 && s[1] >= 0x80 && s[1] <= 0x8f)
148			)
149			&& (s[2] & 0xc0) == 0x80
150			&& (s[3] & 0xc0) == 0x80)
151			{
152	ayin	1.49	*p++ = ((s[0] & 0x07) << 18)
153			\| ((s[1] & 0x3f) << 12)
154			\| ((s[2] & 0x3f) << 6)
155	root	1.19	\| (s[3] & 0x3f);
156	root	1.21	s += 4;
157	root	1.19	}
158			else
159			{
160			*p++ = 0xfffd;
161	root	1.21	s++;
162	root	1.19	}
163			}
164
165			*p = 0;
166
167			return r;
168			}
169
170	root	1.53	const char *
171	ayin	1.46	rxvt_basename (const char *str) NOTHROW
172	pcg	1.1	{
173	root	1.54	const char *base = strrchr (str, '/');
174	pcg	1.1
175	root	1.54	return base ? base + 1 : str;
176	pcg	1.1	}
177
178			/*
179			* Print an error message
180			*/
181			void
182	root	1.36	rxvt_vlog (const char *fmt, va_list arg_ptr) NOTHROW
183	pcg	1.12	{
184			char msg[1024];
185
186			vsnprintf (msg, sizeof msg, fmt, arg_ptr);
187
188			if (GET_R && GET_R->log_hook)
189			(*GET_R->log_hook) (msg);
190			else
191			write (STDOUT_FILENO, msg, strlen (msg));
192			}
193
194			void
195	root	1.36	rxvt_log (const char *fmt,...) NOTHROW
196	pcg	1.1	{
197	pcg	1.8	va_list arg_ptr;
198	pcg	1.1
199	pcg	1.7	va_start (arg_ptr, fmt);
200	pcg	1.12	rxvt_vlog (fmt, arg_ptr);
201	pcg	1.7	va_end (arg_ptr);
202	pcg	1.1	}
203
204			/*
205	pcg	1.12	* Print an error message
206			*/
207			void
208	root	1.36	rxvt_warn (const char *fmt,...) NOTHROW
209	pcg	1.12	{
210			va_list arg_ptr;
211
212			rxvt_log ("%s: ", RESNAME);
213
214			va_start (arg_ptr, fmt);
215			rxvt_vlog (fmt, arg_ptr);
216			va_end (arg_ptr);
217			}
218
219			void
220	root	1.36	rxvt_fatal (const char *fmt,...) THROW ((class rxvt_failure_exception))
221	pcg	1.12	{
222			va_list arg_ptr;
223
224			rxvt_log ("%s: ", RESNAME);
225
226			va_start (arg_ptr, fmt);
227			rxvt_vlog (fmt, arg_ptr);
228			va_end (arg_ptr);
229
230			rxvt_exit_failure ();
231			}
232
233			void
234	root	1.36	rxvt_exit_failure () THROW ((class rxvt_failure_exception))
235	pcg	1.12	{
236	root	1.36	static class rxvt_failure_exception rxvt_failure_exception;
237	pcg	1.12	throw (rxvt_failure_exception);
238			}
239
240			/*
241	ayin	1.44	* remove leading/trailing space in place.
242	pcg	1.1	*/
243	ayin	1.47	char *
244	ayin	1.46	rxvt_strtrim (char *str) NOTHROW
245	pcg	1.1	{
246	pcg	1.8	char r, s;
247	pcg	1.1
248	pcg	1.5	if (!str \|\| !str) / shortcut */
249			return str;
250	pcg	1.1
251	pcg	1.5	/* skip leading spaces */
252	pcg	1.7	for (s = str; s && isspace (s); s++) ;
253	root	1.25
254	pcg	1.5	/* goto end of string */
255	root	1.25	r = s + strlen (s) - 1;
256
257			/* dump return and other trailing whitespace */
258			while (r > s && isspace (*r))
259			r--;
260
261			memmove (str, s, r + 1 - s);
262			str[r + 1 - s] = 0;
263	pcg	1.1
264	pcg	1.5	return str;
265	pcg	1.1	}
266
267			/*
268			* Split a comma-separated string into an array, stripping leading and
269	root	1.25	* trailing spaces from each entry. Empty strings are properly returned
270	pcg	1.1	*/
271	ayin	1.47	char **
272	root	1.36	rxvt_splitcommastring (const char *cs) NOTHROW
273	pcg	1.1	{
274	pcg	1.5	int l, n, p;
275			const char s, t;
276			char **ret;
277
278			if ((s = cs) == NULL)
279			s = "";
280
281			for (n = 1, t = s; *t; t++)
282			if (*t == ',')
283			n++;
284	root	1.25
285	pcg	1.7	ret = (char *)malloc ((n + 1) sizeof (char *));
286	pcg	1.5	ret[n] = NULL;
287
288			for (l = 0, t = s; l < n; l++)
289			{
290			for ( ; t && t != ','; t++) ;
291			p = t - s;
292	pcg	1.7	ret[l] = (char *)malloc (p + 1);
293	ayin	1.51	memcpy (ret[l], s, p);
294	pcg	1.5	ret[l][p] = '\0';
295	ayin	1.46	rxvt_strtrim (ret[l]);
296	pcg	1.5	s = ++t;
297	pcg	1.1	}
298	root	1.25
299	pcg	1.5	return ret;
300	pcg	1.1	}
301
302	root	1.16	void
303	root	1.36	rxvt_freecommastring (char **cs) NOTHROW
304	root	1.16	{
305			for (int i = 0; cs[i]; ++i)
306			free (cs[i]);
307
308			free (cs);
309			}
310
311	ayin	1.50	void *
312			rxvt_malloc (size_t size)
313			{
314			void *p = malloc (size);
315	pcg	1.1
316	ayin	1.50	if (!p)
317			rxvt_fatal ("memory allocation failure. aborting.\n");
318	root	1.28
319	ayin	1.50	return p;
320			}
321
322			void *
323			rxvt_calloc (size_t number, size_t size)
324			{
325			void *p = calloc (number, size);
326
327			if (!p)
328			rxvt_fatal ("memory allocation failure. aborting.\n");
329
330			return p;
331			}
332
333			void *
334			rxvt_realloc (void *ptr, size_t size)
335			{
336			void *p = realloc (ptr, size);
337
338			if (!p)
339			rxvt_fatal ("memory allocation failure. aborting.\n");
340
341			return p;
342			}