rxvt-unicode/src/misc.C

/*--------------------------------*-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) 2003-2004 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++ = '?';
      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;
}

char *
rxvt_strdup (const char *str)
{
  return str ? strdup (str) : 0;
}

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

  return (char *) (base ? base + 1 : str);
}

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

class rxvt_failure_exception rxvt_failure_exception;

void
rxvt_exit_failure ()
{
  throw (rxvt_failure_exception);
}

/*
 * check that the first characters of S1 match S2
 *
 * No Match
 *      return: 0
 * Match
 *      return: strlen (S2)
 */
int
rxvt_Str_match (const char *s1, const char *s2)
{
  int n = strlen (s2);

  return ((strncmp (s1, s2, n) == 0) ? n : 0);
}

const char *
rxvt_Str_skip_space (const char *str)
{
  if (str)
    while (*str && isspace (*str))
      str++;

  return str;
}

/*
 * remove leading/trailing space and strip-off leading/trailing quotes.
 * in place.
 */
char           *
rxvt_Str_trim (char *str)
{
  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--;

#if 0
  /* skip matching leading/trailing quotes */
  if (*s == '"' && *r == '"' && n > 1)
    {
      s++;
      n -= 2;
    }
#endif

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

  return str;
}

/*
 * in-place interpretation of string:
 *
 *      backslash-escaped:      "\a\b\E\e\n\r\t", "\octal"
 *      Ctrl chars:     ^@ .. ^_, ^?
 *
 *      Emacs-style:    "M-" prefix
 *
 * Also,
 *      "M-x" prefixed strings, append "\r" if needed
 *      "\E]" prefixed strings (XTerm escape sequence) append ST if needed
 *
 * returns the converted string length
 */
int
rxvt_Str_escaped (char *str)
{
  char            ch, *s, *d;
  int             i, num, append = 0;

  if (!str || !*str)
    return 0;

  d = s = str;

  if (*s == 'M' && s[1] == '-')
    {
      /* Emacs convenience, replace leading `M-..' with `\E..' */
      *d++ = C0_ESC;
      s += 2;
      if (toupper (*s) == 'X')
        /* append carriage-return for `M-xcommand' */
        for (*d++ = 'x', append = '\r', s++; isspace (*s); s++) ;
    }
  for (; (ch = *s++);)
    {
      if (ch == '\\')
        {
          ch = *s++;
          if (ch >= '0' && ch <= '7')
            {   /* octal */
              num = ch - '0';
              for (i = 0; i < 2; i++, s++)
                {
                  ch = *s;
                  if (ch < '0' || ch > '7')
                    break;
                  num = num * 8 + ch - '0';
                }
              ch = (char)num;
            }
          else if (ch == 'a')
            ch = C0_BEL;        /* bell */
          else if (ch == 'b')
            ch = C0_BS; /* backspace */
          else if (ch == 'E' || ch == 'e')
            ch = C0_ESC;        /* escape */
          else if (ch == 'n')
            ch = '\n';  /* newline */
          else if (ch == 'r')
            ch = '\r';  /* carriage-return */
          else if (ch == 't')
            ch = C0_HT; /* tab */
        }
      else if (ch == '^')
        {
          ch = *s++;
          ch = toupper (ch);
          ch = (ch == '?' ? 127 : (ch - '@'));
        }
      *d++ = ch;
    }

  /* ESC] is an XTerm escape sequence, must be terminated */
  if (*str == '\0' && str[1] == C0_ESC && str[2] == ']')
    append = CHAR_ST;

  /* add trailing character as required */
  if (append && d[-1] != append)
    *d++ = append;
  *d = '\0';

  return (d - str);
}

/*
 * Split a comma-separated string into an array, stripping leading and
 * trailing spaces from each entry.  Empty strings are properly returned
 * Caller should free each entry and array when done
 */
char          **
rxvt_splitcommastring (const char *cs)
{
  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);
      strncpy (ret[l], s, p);
      ret[l][p] = '\0';
      rxvt_Str_trim (ret[l]);
      s = ++t;
    }

  return ret;
}

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

  free (cs);
}

/*----------------------------------------------------------------------*
 * file searching
 */

/* #define DEBUG_SEARCH_PATH */

#if defined (XPM_BACKGROUND) || (MENUBAR_MAX)
/*
 * search for FILE in the current working directory, and within the
 * colon-delimited PATHLIST, adding the file extension EXT if required.
 *
 * FILE is either semi-colon or zero terminated
 */
char           *
rxvt_File_search_path (const char *pathlist, const char *file, const char *ext)
{
  int             maxpath, len;
  const char     *p, *path;
  char            name[256];

  if (!access (file, R_OK))     /* found (plain name) in current directory */
    return strdup (file);

  /* semi-colon delimited */
  if ((p = strchr (file, ';')))
    len = (p - file);
  else
    len = strlen (file);

#ifdef DEBUG_SEARCH_PATH
  getcwd (name, sizeof (name));
  fprintf (stderr, "pwd: \"%s\"\n", name);
  fprintf (stderr, "find: \"%.*s\"\n", len, file);
#endif

  /* leave room for an extra '/' and trailing '\0' */
  maxpath = sizeof (name) - (len + (ext ? strlen (ext) : 0) + 2);
  if (maxpath <= 0)
    return NULL;

  /* check if we can find it now */
  strncpy (name, file, len);
  name[len] = '\0';

  if (!access (name, R_OK))
    return strdup (name);
  if (ext)
    {
      strcat (name, ext);
      if (!access (name, R_OK))
        return strdup (name);
    }
  for (path = pathlist; path != NULL && *path != '\0'; path = p)
    {
      int             n;

      /* colon delimited */
      if ((p = strchr (path, ':')) == NULL)
        p = strchr (path, '\0');

      n = (p - path);
      if (*p != '\0')
        p++;

      if (n > 0 && n <= maxpath)
        {
          strncpy (name, path, n);
          if (name[n - 1] != '/')
            name[n++] = '/';
          name[n] = '\0';
          strncat (name, file, len);

          if (!access (name, R_OK))
            return strdup (name);
          if (ext)
            {
              strcat (name, ext);
              if (!access (name, R_OK))
                return strdup (name);
            }
        }
    }
  return NULL;
}

char           *
rxvt_File_find (const char *file, const char *ext, const char *path)
{
  char           *f;

  if (file == NULL || *file == '\0')
    return NULL;

  /* search environment variables here too */
  if ((f = rxvt_File_search_path (path, file, ext)) == NULL)
#ifdef PATH_ENV
    if ((f = rxvt_File_search_path (getenv (PATH_ENV), file, ext)) == NULL)
#endif
      f = rxvt_File_search_path (getenv ("PATH"), file, ext);

#ifdef DEBUG_SEARCH_PATH
  if (f)
    fprintf (stderr, "found: \"%s\"\n", f);
#endif

  return f;
}
#endif                          /* defined (XPM_BACKGROUND) || (MENUBAR_MAX) */

/*----------------------------------------------------------------------*
 * miscellaneous drawing routines
 */

/*
 * Draw top/left and bottom/right border shadows around windows
 */
#if defined(RXVT_SCROLLBAR) || defined(MENUBAR)
void
rxvt_Draw_Shadow (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int h)
{
  int             shadow;

  shadow = (w == 0 || h == 0) ? 1 : SHADOW;
  w += x - 1;
  h += y - 1;
  for (; shadow-- > 0; x++, y++, w--, h--)
    {
      XDrawLine (display, win, topShadow, x, y, w, y);
      XDrawLine (display, win, topShadow, x, y, x, h);
      XDrawLine (display, win, botShadow, w, h, w, y + 1);
      XDrawLine (display, win, botShadow, w, h, x + 1, h);
    }
}
#endif

/* button shapes */
#ifdef MENUBAR
void
rxvt_Draw_Triangle (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int type)
{
  switch (type)
    {
      case 'r':                 /* right triangle */
        XDrawLine (display, win, topShadow, x, y, x, y + w);
        XDrawLine (display, win, topShadow, x, y, x + w, y + w / 2);
        XDrawLine (display, win, botShadow, x, y + w, x + w, y + w / 2);
        break;

      case 'l':                 /* left triangle */
        XDrawLine (display, win, botShadow, x + w, y + w, x + w, y);
        XDrawLine (display, win, botShadow, x + w, y + w, x, y + w / 2);
        XDrawLine (display, win, topShadow, x, y + w / 2, x + w, y);
        break;

      case 'd':                 /* down triangle */
        XDrawLine (display, win, topShadow, x, y, x + w / 2, y + w);
        XDrawLine (display, win, topShadow, x, y, x + w, y);
        XDrawLine (display, win, botShadow, x + w, y, x + w / 2, y + w);
        break;

      case 'u':                 /* up triangle */
        XDrawLine (display, win, botShadow, x + w, y + w, x + w / 2, y);
        XDrawLine (display, win, botShadow, x + w, y + w, x, y + w);
        XDrawLine (display, win, topShadow, x, y + w, x + w / 2, y);
        break;
#if 0
      case 's':                 /* square */
        XDrawLine (display, win, topShadow, x + w, y, x, y);
        XDrawLine (display, win, topShadow, x, y, x, y + w);
        XDrawLine (display, win, botShadow, x, y + w, x + w, y + w);
        XDrawLine (display, win, botShadow, x + w, y + w, x + w, y);
        break;
#endif

    }
}
#endif
/*----------------------- end-of-file (C source) -----------------------*/
Revision:	1.27
Committed:	Wed Feb 16 21:37:10 2005 UTC (19 years, 3 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-5_5, rel-5_4, rel-5_7, rel-5_3, rel-5_2
Changes since 1.26:	+0 -15 lines
Log Message:	* empty log message *
#	Content
1	/---------------------------------C----------------------------------
2	* File: misc.C
3	----------------------------------------------------------------------
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	* Copyright (c) 2003-2004 Marc Lehmann <pcg@goof.com>
10	*
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	char *
30	rxvt_wcstombs (const wchar_t *str, int len)
31	{
32	if (len < 0) len = wcslen (str);
33
34	mbstate mbs;
35	char r = (char )rxvt_malloc (len * MB_CUR_MAX + 1);
36
37	char *dst = r;
38	while (len--)
39	{
40	ssize_t l = wcrtomb (dst, *str++, mbs);
41	if (l < 0)
42	*dst++ = '?';
43	else
44	dst += l;
45	}
46
47	*dst++ = 0;
48
49	return (char *)rxvt_realloc (r, dst - r);
50	}
51
52	wchar_t *
53	rxvt_mbstowcs (const char *str, int len)
54	{
55	if (len < 0) len = strlen (str);
56
57	wchar_t r = (wchar_t )rxvt_malloc ((len + 1) * sizeof (wchar_t));
58
59	if ((ssize_t)mbstowcs (r, str, len + 1) < 0)
60	*r = 0;
61
62	return r;
63	}
64
65	char *
66	rxvt_wcstoutf8 (const wchar_t *str, int len)
67	{
68	if (len < 0) len = wcslen (str);
69
70	char r = (char )rxvt_malloc (len * 4 + 1);
71	char *p = r;
72
73	while (len--)
74	{
75	unicode_t w = *str++ & UNICODE_MASK;
76
77	if (w < 0x000080)
78	*p++ = w;
79	else if (w < 0x000800)
80	*p++ = 0xc0 \| ( w >> 6),
81	*p++ = 0x80 \| ( w & 0x3f);
82	else if (w < 0x010000)
83	*p++ = 0xe0 \| ( w >> 12 ),
84	*p++ = 0x80 \| ((w >> 6) & 0x3f),
85	*p++ = 0x80 \| ( w & 0x3f);
86	else if (w < 0x110000)
87	*p++ = 0xf0 \| ( w >> 18),
88	*p++ = 0x80 \| ((w >> 12) & 0x3f),
89	*p++ = 0x80 \| ((w >> 6) & 0x3f),
90	*p++ = 0x80 \| ( w & 0x3f);
91	else
92	*p++ = '?';
93	}
94
95	*p++ = 0;
96
97	return (char *)rxvt_realloc (r, p - r);
98	}
99
100	wchar_t *
101	rxvt_utf8towcs (const char *str, int len)
102	{
103	if (len < 0) len = strlen (str);
104
105	wchar_t r = (wchar_t )rxvt_malloc ((len + 1) * sizeof (wchar_t)),
106	*p = r;
107
108	unsigned char s = (unsigned char )str,
109	*e = s + len;
110
111	for (;;)
112	{
113	len = e - s;
114
115	if (len == 0)
116	break;
117	else if (s[0] < 0x80)
118	p++ = s++;
119	else if (len >= 2
120	&& s[0] >= 0xc2 && s[0] <= 0xdf
121	&& (s[1] & 0xc0) == 0x80)
122	{
123	*p++ = ((s[0] & 0x1f) << 6)
124	\| (s[1] & 0x3f);
125	s += 2;
126	}
127	else if (len >= 3
128	&& ( (s[0] == 0xe0 && s[1] >= 0xa0 && s[1] <= 0xbf)
129	\|\| (s[0] >= 0xe1 && s[0] <= 0xec && s[1] >= 0x80 && s[1] <= 0xbf)
130	\|\| (s[0] == 0xed && s[1] >= 0x80 && s[1] <= 0x9f)
131	\|\| (s[0] >= 0xee && s[0] <= 0xef && s[1] >= 0x80 && s[1] <= 0xbf)
132	)
133	&& (s[2] & 0xc0) == 0x80)
134	{
135	*p++ = ((s[0] & 0x0f) << 12)
136	\| ((s[1] & 0x3f) << 6)
137	\| (s[2] & 0x3f);
138	s += 3;
139	}
140	else if (len >= 4
141	&& ( (s[0] == 0xf0 && s[1] >= 0x90 && s[1] <= 0xbf)
142	\|\| (s[0] >= 0xf1 && s[0] <= 0xf3 && s[1] >= 0x80 && s[1] <= 0xbf)
143	\|\| (s[0] == 0xf4 && s[1] >= 0x80 && s[1] <= 0x8f)
144	)
145	&& (s[2] & 0xc0) == 0x80
146	&& (s[3] & 0xc0) == 0x80)
147	{
148	*p++ = ((s[0] & 0x07) << 18)
149	\| ((s[1] & 0x3f) << 12)
150	\| ((s[2] & 0x3f) << 6)
151	\| (s[3] & 0x3f);
152	s += 4;
153	}
154	else
155	{
156	*p++ = 0xfffd;
157	s++;
158	}
159	}
160
161	*p = 0;
162
163	return r;
164	}
165
166	char *
167	rxvt_strdup (const char *str)
168	{
169	return str ? strdup (str) : 0;
170	}
171
172	char *
173	rxvt_r_basename (const char *str)
174	{
175	char *base = strrchr (str, '/');
176
177	return (char *) (base ? base + 1 : str);
178	}
179
180	/*
181	* Print an error message
182	*/
183	void
184	rxvt_vlog (const char *fmt, va_list arg_ptr)
185	{
186	char msg[1024];
187
188	vsnprintf (msg, sizeof msg, fmt, arg_ptr);
189
190	if (GET_R && GET_R->log_hook)
191	(*GET_R->log_hook) (msg);
192	else
193	write (STDOUT_FILENO, msg, strlen (msg));
194	}
195
196	void
197	rxvt_log (const char *fmt,...)
198	{
199	va_list arg_ptr;
200
201	va_start (arg_ptr, fmt);
202	rxvt_vlog (fmt, arg_ptr);
203	va_end (arg_ptr);
204	}
205
206	/*
207	* Print an error message
208	*/
209	void
210	rxvt_warn (const char *fmt,...)
211	{
212	va_list arg_ptr;
213
214	rxvt_log ("%s: ", RESNAME);
215
216	va_start (arg_ptr, fmt);
217	rxvt_vlog (fmt, arg_ptr);
218	va_end (arg_ptr);
219	}
220
221	void
222	rxvt_fatal (const char *fmt,...)
223	{
224	va_list arg_ptr;
225
226	rxvt_log ("%s: ", RESNAME);
227
228	va_start (arg_ptr, fmt);
229	rxvt_vlog (fmt, arg_ptr);
230	va_end (arg_ptr);
231
232	rxvt_exit_failure ();
233	}
234
235	class rxvt_failure_exception rxvt_failure_exception;
236
237	void
238	rxvt_exit_failure ()
239	{
240	throw (rxvt_failure_exception);
241	}
242
243	/*
244	* check that the first characters of S1 match S2
245	*
246	* No Match
247	* return: 0
248	* Match
249	* return: strlen (S2)
250	*/
251	int
252	rxvt_Str_match (const char s1, const char s2)
253	{
254	int n = strlen (s2);
255
256	return ((strncmp (s1, s2, n) == 0) ? n : 0);
257	}
258
259	const char *
260	rxvt_Str_skip_space (const char *str)
261	{
262	if (str)
263	while (str && isspace (str))
264	str++;
265
266	return str;
267	}
268
269	/*
270	* remove leading/trailing space and strip-off leading/trailing quotes.
271	* in place.
272	*/
273	char *
274	rxvt_Str_trim (char *str)
275	{
276	char r, s;
277
278	if (!str \|\| !str) / shortcut */
279	return str;
280
281	/* skip leading spaces */
282	for (s = str; s && isspace (s); s++) ;
283
284	/* goto end of string */
285	r = s + strlen (s) - 1;
286
287	/* dump return and other trailing whitespace */
288	while (r > s && isspace (*r))
289	r--;
290
291	#if 0
292	/* skip matching leading/trailing quotes */
293	if (s == '"' && r == '"' && n > 1)
294	{
295	s++;
296	n -= 2;
297	}
298	#endif
299
300	memmove (str, s, r + 1 - s);
301	str[r + 1 - s] = 0;
302
303	return str;
304	}
305
306	/*
307	* in-place interpretation of string:
308	*
309	* backslash-escaped: "\a\b\E\e\n\r\t", "\octal"
310	* Ctrl chars: ^@ .. ^_, ^?
311	*
312	* Emacs-style: "M-" prefix
313	*
314	* Also,
315	* "M-x" prefixed strings, append "\r" if needed
316	* "\E]" prefixed strings (XTerm escape sequence) append ST if needed
317	*
318	* returns the converted string length
319	*/
320	int
321	rxvt_Str_escaped (char *str)
322	{
323	char ch, s, d;
324	int i, num, append = 0;
325
326	if (!str \|\| !*str)
327	return 0;
328
329	d = s = str;
330
331	if (*s == 'M' && s[1] == '-')
332	{
333	/* Emacs convenience, replace leading `M-..' with `\E..' */
334	*d++ = C0_ESC;
335	s += 2;
336	if (toupper (*s) == 'X')
337	/* append carriage-return for `M-xcommand' */
338	for (d++ = 'x', append = '\r', s++; isspace (s); s++) ;
339	}
340	for (; (ch = *s++);)
341	{
342	if (ch == '\\')
343	{
344	ch = *s++;
345	if (ch >= '0' && ch <= '7')
346	{ /* octal */
347	num = ch - '0';
348	for (i = 0; i < 2; i++, s++)
349	{
350	ch = *s;
351	if (ch < '0' \|\| ch > '7')
352	break;
353	num = num * 8 + ch - '0';
354	}
355	ch = (char)num;
356	}
357	else if (ch == 'a')
358	ch = C0_BEL; /* bell */
359	else if (ch == 'b')
360	ch = C0_BS; /* backspace */
361	else if (ch == 'E' \|\| ch == 'e')
362	ch = C0_ESC; /* escape */
363	else if (ch == 'n')
364	ch = '\n'; /* newline */
365	else if (ch == 'r')
366	ch = '\r'; /* carriage-return */
367	else if (ch == 't')
368	ch = C0_HT; /* tab */
369	}
370	else if (ch == '^')
371	{
372	ch = *s++;
373	ch = toupper (ch);
374	ch = (ch == '?' ? 127 : (ch - '@'));
375	}
376	*d++ = ch;
377	}
378
379	/* ESC] is an XTerm escape sequence, must be terminated */
380	if (*str == '\0' && str[1] == C0_ESC && str[2] == ']')
381	append = CHAR_ST;
382
383	/* add trailing character as required */
384	if (append && d[-1] != append)
385	*d++ = append;
386	*d = '\0';
387
388	return (d - str);
389	}
390
391	/*
392	* Split a comma-separated string into an array, stripping leading and
393	* trailing spaces from each entry. Empty strings are properly returned
394	* Caller should free each entry and array when done
395	*/
396	char **
397	rxvt_splitcommastring (const char *cs)
398	{
399	int l, n, p;
400	const char s, t;
401	char **ret;
402
403	if ((s = cs) == NULL)
404	s = "";
405
406	for (n = 1, t = s; *t; t++)
407	if (*t == ',')
408	n++;
409
410	ret = (char *)malloc ((n + 1) sizeof (char *));
411	ret[n] = NULL;
412
413	for (l = 0, t = s; l < n; l++)
414	{
415	for ( ; t && t != ','; t++) ;
416	p = t - s;
417	ret[l] = (char *)malloc (p + 1);
418	strncpy (ret[l], s, p);
419	ret[l][p] = '\0';
420	rxvt_Str_trim (ret[l]);
421	s = ++t;
422	}
423
424	return ret;
425	}
426
427	void
428	rxvt_freecommastring (char **cs)
429	{
430	for (int i = 0; cs[i]; ++i)
431	free (cs[i]);
432
433	free (cs);
434	}
435
436	/----------------------------------------------------------------------
437	* file searching
438	*/
439
440	/* #define DEBUG_SEARCH_PATH */
441
442	#if defined (XPM_BACKGROUND) \|\| (MENUBAR_MAX)
443	/*
444	* search for FILE in the current working directory, and within the
445	* colon-delimited PATHLIST, adding the file extension EXT if required.
446	*
447	* FILE is either semi-colon or zero terminated
448	*/
449	char *
450	rxvt_File_search_path (const char pathlist, const char file, const char *ext)
451	{
452	int maxpath, len;
453	const char p, path;
454	char name[256];
455
456	if (!access (file, R_OK)) /* found (plain name) in current directory */
457	return strdup (file);
458
459	/* semi-colon delimited */
460	if ((p = strchr (file, ';')))
461	len = (p - file);
462	else
463	len = strlen (file);
464
465	#ifdef DEBUG_SEARCH_PATH
466	getcwd (name, sizeof (name));
467	fprintf (stderr, "pwd: \"%s\"\n", name);
468	fprintf (stderr, "find: \"%.*s\"\n", len, file);
469	#endif
470
471	/* leave room for an extra '/' and trailing '\0' */
472	maxpath = sizeof (name) - (len + (ext ? strlen (ext) : 0) + 2);
473	if (maxpath <= 0)
474	return NULL;
475
476	/* check if we can find it now */
477	strncpy (name, file, len);
478	name[len] = '\0';
479
480	if (!access (name, R_OK))
481	return strdup (name);
482	if (ext)
483	{
484	strcat (name, ext);
485	if (!access (name, R_OK))
486	return strdup (name);
487	}
488	for (path = pathlist; path != NULL && *path != '\0'; path = p)
489	{
490	int n;
491
492	/* colon delimited */
493	if ((p = strchr (path, ':')) == NULL)
494	p = strchr (path, '\0');
495
496	n = (p - path);
497	if (*p != '\0')
498	p++;
499
500	if (n > 0 && n <= maxpath)
501	{
502	strncpy (name, path, n);
503	if (name[n - 1] != '/')
504	name[n++] = '/';
505	name[n] = '\0';
506	strncat (name, file, len);
507
508	if (!access (name, R_OK))
509	return strdup (name);
510	if (ext)
511	{
512	strcat (name, ext);
513	if (!access (name, R_OK))
514	return strdup (name);
515	}
516	}
517	}
518	return NULL;
519	}
520
521	char *
522	rxvt_File_find (const char file, const char ext, const char *path)
523	{
524	char *f;
525
526	if (file == NULL \|\| *file == '\0')
527	return NULL;
528
529	/* search environment variables here too */
530	if ((f = rxvt_File_search_path (path, file, ext)) == NULL)
531	#ifdef PATH_ENV
532	if ((f = rxvt_File_search_path (getenv (PATH_ENV), file, ext)) == NULL)
533	#endif
534	f = rxvt_File_search_path (getenv ("PATH"), file, ext);
535
536	#ifdef DEBUG_SEARCH_PATH
537	if (f)
538	fprintf (stderr, "found: \"%s\"\n", f);
539	#endif
540
541	return f;
542	}
543	#endif /* defined (XPM_BACKGROUND) \|\| (MENUBAR_MAX) */
544
545	/----------------------------------------------------------------------
546	* miscellaneous drawing routines
547	*/
548
549	/*
550	* Draw top/left and bottom/right border shadows around windows
551	*/
552	#if defined(RXVT_SCROLLBAR) \|\| defined(MENUBAR)
553	void
554	rxvt_Draw_Shadow (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int h)
555	{
556	int shadow;
557
558	shadow = (w == 0 \|\| h == 0) ? 1 : SHADOW;
559	w += x - 1;
560	h += y - 1;
561	for (; shadow-- > 0; x++, y++, w--, h--)
562	{
563	XDrawLine (display, win, topShadow, x, y, w, y);
564	XDrawLine (display, win, topShadow, x, y, x, h);
565	XDrawLine (display, win, botShadow, w, h, w, y + 1);
566	XDrawLine (display, win, botShadow, w, h, x + 1, h);
567	}
568	}
569	#endif
570
571	/* button shapes */
572	#ifdef MENUBAR
573	void
574	rxvt_Draw_Triangle (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int type)
575	{
576	switch (type)
577	{
578	case 'r': /* right triangle */
579	XDrawLine (display, win, topShadow, x, y, x, y + w);
580	XDrawLine (display, win, topShadow, x, y, x + w, y + w / 2);
581	XDrawLine (display, win, botShadow, x, y + w, x + w, y + w / 2);
582	break;
583
584	case 'l': /* left triangle */
585	XDrawLine (display, win, botShadow, x + w, y + w, x + w, y);
586	XDrawLine (display, win, botShadow, x + w, y + w, x, y + w / 2);
587	XDrawLine (display, win, topShadow, x, y + w / 2, x + w, y);
588	break;
589
590	case 'd': /* down triangle */
591	XDrawLine (display, win, topShadow, x, y, x + w / 2, y + w);
592	XDrawLine (display, win, topShadow, x, y, x + w, y);
593	XDrawLine (display, win, botShadow, x + w, y, x + w / 2, y + w);
594	break;
595
596	case 'u': /* up triangle */
597	XDrawLine (display, win, botShadow, x + w, y + w, x + w / 2, y);
598	XDrawLine (display, win, botShadow, x + w, y + w, x, y + w);
599	XDrawLine (display, win, topShadow, x, y + w, x + w / 2, y);
600	break;
601	#if 0
602	case 's': /* square */
603	XDrawLine (display, win, topShadow, x + w, y, x, y);
604	XDrawLine (display, win, topShadow, x, y, x, y + w);
605	XDrawLine (display, win, botShadow, x, y + w, x + w, y + w);
606	XDrawLine (display, win, botShadow, x + w, y + w, x + w, y);
607	break;
608	#endif
609
610	}
611	}
612	#endif
613	/----------------------- end-of-file (C source) -----------------------/