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 */
#include "misc.intpro"          /* PROTOS for internal routines */

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--)
    {
      int l = wcrtomb (dst, *str++, mbs);
      if (l < 0)
        *dst++ = '?';
      else
        dst += l;
    }

  *dst++ = 0;

  return 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 (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++;

      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 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));
  wchar_t *p = r;

  unsigned char *s = (unsigned char *)str;

  while (len)
    {
      if (s[0] < 0x80)
        {
          *p++ = *s++; len--;
        }
      else if (len > 0 
               && s[0] >= 0xc2 && s[0] <= 0xdf 
               && (s[1] & 0xc0) == 0x80)
        {
          *p++ = ((s[0] & 0x1f) << 6)
               |  (s[1] & 0x3f);
          s += 2; len -= 2;
        }
      else if (len > 1 
               && (   (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; len -= 3;
        }
      else if (len > 2
               && (   (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; len -= 4;
        }
      else
        {
          *p++ = 0xfffd;
          s++; len--;
        }
    }

  *p = 0;

  return r;
}

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

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

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

/*
 * Print an error message
 */
/* INTPROTO */
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));
}

/* INTPROTO */
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
 */
/* INTPROTO */
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);
}

/* INTPROTO */
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;

/* INTPROTO */
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)
 */
/* INTPROTO */
int
rxvt_Str_match (const char *s1, const char *s2)
{
  int n = strlen (s2);

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

/* INTPROTO */
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.
 */
/* INTPROTO */
char           *
rxvt_Str_trim (char *str)
{
  char *r, *s;
  int n;

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

  /* skip leading spaces */
  for (s = str; *s && isspace (*s); s++) ;
  /* goto end of string */
  for (n = 0, r = s; *r++; n++) ;
  r -= 2;
  /* dump return */
  if (n > 0 && *r == '\n')
    n--, r--;
  /* backtrack along trailing spaces */
  for (; n > 0 && isspace (*r); r--, n--) ;
  /* skip matching leading/trailing quotes */
  if (*s == '"' && *r == '"' && n > 1)
    {
      s++;
      n -= 2;
    }

  /* copy back over: forwards copy */
  for (r = str; n; n--)
    *r++ = *s++;
  *r = '\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
 */
/* INTPROTO */
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 (and paired quotes) from each entry.  Empty strings
 * are properly returned
 * Caller should free each entry and array when done
 */
/* INTPROTO */
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
 */
/* INTPROTO */
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;
}

/* INTPROTO */
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)
/* INTPROTO */
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
/* INTPROTO */
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:	1.20
Committed:	Mon Dec 13 06:44:18 2004 UTC (19 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.19:	+8 -6 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	#include "misc.intpro" /* PROTOS for internal routines */
29
30	char *
31	rxvt_wcstombs (const wchar_t *str, int len)
32	{
33	if (len < 0) len = wcslen (str);
34
35	mbstate mbs;
36	char r = (char )rxvt_malloc (len * MB_CUR_MAX + 1);
37
38	char *dst = r;
39	while (len--)
40	{
41	int l = wcrtomb (dst, *str++, mbs);
42	if (l < 0)
43	*dst++ = '?';
44	else
45	dst += l;
46	}
47
48	*dst++ = 0;
49
50	return r;
51	}
52
53	wchar_t *
54	rxvt_mbstowcs (const char *str, int len)
55	{
56	if (len < 0) len = strlen (str);
57
58	wchar_t r = (wchar_t )rxvt_malloc ((len + 1) * sizeof (wchar_t));
59
60	if (mbstowcs (r, str, len + 1) < 0)
61	*r = 0;
62
63	return r;
64	}
65
66	char *
67	rxvt_wcstoutf8 (const wchar_t *str, int len)
68	{
69	if (len < 0) len = wcslen (str);
70
71	char r = (char )rxvt_malloc (len * 4 + 1);
72	char *p = r;
73
74	while (len--)
75	{
76	unicode_t w = *str++;
77
78	if (w < 0x000080)
79	*p++ = w;
80	else if (w < 0x000800)
81	*p++ = 0xc0 \| ( w >> 6),
82	*p++ = 0x80 \| ( w & 0x3f);
83	else if (w < 0x010000)
84	*p++ = 0xe0 \| ( w >> 12 ),
85	*p++ = 0x80 \| ((w >> 6) & 0x3f),
86	*p++ = 0x80 \| ( w & 0x3f);
87	else if (w < 0x110000)
88	*p++ = 0xf0 \| ( w >> 18),
89	*p++ = 0x80 \| ((w >> 12) & 0x3f),
90	*p++ = 0x80 \| ((w >> 6) & 0x3f),
91	*p++ = 0x80 \| ( w & 0x3f);
92	else
93	*p++ = '?';
94	}
95
96	*p = 0;
97
98	return r;
99	}
100
101	wchar_t *
102	rxvt_utf8towcs (const char *str, int len)
103	{
104	if (len < 0) len = strlen (str);
105
106	wchar_t r = (wchar_t )rxvt_malloc ((len + 1) * sizeof (wchar_t));
107	wchar_t *p = r;
108
109	unsigned char s = (unsigned char )str;
110
111	while (len)
112	{
113	if (s[0] < 0x80)
114	{
115	p++ = s++; len--;
116	}
117	else if (len > 0
118	&& s[0] >= 0xc2 && s[0] <= 0xdf
119	&& (s[1] & 0xc0) == 0x80)
120	{
121	*p++ = ((s[0] & 0x1f) << 6)
122	\| (s[1] & 0x3f);
123	s += 2; len -= 2;
124	}
125	else if (len > 1
126	&& ( (s[0] == 0xe0 && s[1] >= 0xa0 && s[1] <= 0xbf)
127	\|\| (s[0] >= 0xe1 && s[0] <= 0xec && s[1] >= 0x80 && s[1] <= 0xbf)
128	\|\| (s[0] == 0xed && s[1] >= 0x80 && s[1] <= 0x9f)
129	\|\| (s[0] >= 0xee && s[0] <= 0xef && s[1] >= 0x80 && s[1] <= 0xbf)
130	)
131	&& (s[2] & 0xc0) == 0x80)
132	{
133	*p++ = ((s[0] & 0x0f) << 12)
134	\| ((s[1] & 0x3f) << 6)
135	\| (s[2] & 0x3f);
136	s += 3; len -= 3;
137	}
138	else if (len > 2
139	&& ( (s[0] == 0xf0 && s[1] >= 0x90 && s[1] <= 0xbf)
140	\|\| (s[0] >= 0xf1 && s[0] <= 0xf3 && s[1] >= 0x80 && s[1] <= 0xbf)
141	\|\| (s[0] == 0xf4 && s[1] >= 0x80 && s[1] <= 0x8f)
142	)
143	&& (s[2] & 0xc0) == 0x80
144	&& (s[3] & 0xc0) == 0x80)
145	{
146	*p++ = ((s[0] & 0x07) << 18)
147	\| ((s[1] & 0x3f) << 12)
148	\| ((s[2] & 0x3f) << 6)
149	\| (s[3] & 0x3f);
150	s += 4; len -= 4;
151	}
152	else
153	{
154	*p++ = 0xfffd;
155	s++; len--;
156	}
157	}
158
159	*p = 0;
160
161	return r;
162	}
163
164	char *
165	rxvt_strdup (const char *str)
166	{
167	return str ? strdup (str) : 0;
168	}
169
170	/* INTPROTO */
171	char *
172	rxvt_r_basename (const char *str)
173	{
174	char *base = strrchr (str, '/');
175
176	return (char *) (base ? base + 1 : str);
177	}
178
179	/*
180	* Print an error message
181	*/
182	/* INTPROTO */
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	/* INTPROTO */
197	void
198	rxvt_log (const char *fmt,...)
199	{
200	va_list arg_ptr;
201
202	va_start (arg_ptr, fmt);
203	rxvt_vlog (fmt, arg_ptr);
204	va_end (arg_ptr);
205	}
206
207	/*
208	* Print an error message
209	*/
210	/* INTPROTO */
211	void
212	rxvt_warn (const char *fmt,...)
213	{
214	va_list arg_ptr;
215
216	rxvt_log ("%s: ", RESNAME);
217
218	va_start (arg_ptr, fmt);
219	rxvt_vlog (fmt, arg_ptr);
220	va_end (arg_ptr);
221	}
222
223	/* INTPROTO */
224	void
225	rxvt_fatal (const char *fmt,...)
226	{
227	va_list arg_ptr;
228
229	rxvt_log ("%s: ", RESNAME);
230
231	va_start (arg_ptr, fmt);
232	rxvt_vlog (fmt, arg_ptr);
233	va_end (arg_ptr);
234
235	rxvt_exit_failure ();
236	}
237
238	class rxvt_failure_exception rxvt_failure_exception;
239
240	/* INTPROTO */
241	void
242	rxvt_exit_failure ()
243	{
244	throw (rxvt_failure_exception);
245	}
246
247	/*
248	* check that the first characters of S1 match S2
249	*
250	* No Match
251	* return: 0
252	* Match
253	* return: strlen (S2)
254	*/
255	/* INTPROTO */
256	int
257	rxvt_Str_match (const char s1, const char s2)
258	{
259	int n = strlen (s2);
260
261	return ((strncmp (s1, s2, n) == 0) ? n : 0);
262	}
263
264	/* INTPROTO */
265	const char *
266	rxvt_Str_skip_space (const char *str)
267	{
268	if (str)
269	while (str && isspace (str))
270	str++;
271
272	return str;
273	}
274
275	/*
276	* remove leading/trailing space and strip-off leading/trailing quotes.
277	* in place.
278	*/
279	/* INTPROTO */
280	char *
281	rxvt_Str_trim (char *str)
282	{
283	char r, s;
284	int n;
285
286	if (!str \|\| !str) / shortcut */
287	return str;
288
289	/* skip leading spaces */
290	for (s = str; s && isspace (s); s++) ;
291	/* goto end of string */
292	for (n = 0, r = s; *r++; n++) ;
293	r -= 2;
294	/* dump return */
295	if (n > 0 && *r == '\n')
296	n--, r--;
297	/* backtrack along trailing spaces */
298	for (; n > 0 && isspace (*r); r--, n--) ;
299	/* skip matching leading/trailing quotes */
300	if (s == '"' && r == '"' && n > 1)
301	{
302	s++;
303	n -= 2;
304	}
305
306	/* copy back over: forwards copy */
307	for (r = str; n; n--)
308	r++ = s++;
309	*r = '\0';
310
311	return str;
312	}
313
314	/*
315	* in-place interpretation of string:
316	*
317	* backslash-escaped: "\a\b\E\e\n\r\t", "\octal"
318	* Ctrl chars: ^@ .. ^_, ^?
319	*
320	* Emacs-style: "M-" prefix
321	*
322	* Also,
323	* "M-x" prefixed strings, append "\r" if needed
324	* "\E]" prefixed strings (XTerm escape sequence) append ST if needed
325	*
326	* returns the converted string length
327	*/
328	/* INTPROTO */
329	int
330	rxvt_Str_escaped (char *str)
331	{
332	char ch, s, d;
333	int i, num, append = 0;
334
335	if (!str \|\| !*str)
336	return 0;
337
338	d = s = str;
339
340	if (*s == 'M' && s[1] == '-')
341	{
342	/* Emacs convenience, replace leading `M-..' with `\E..' */
343	*d++ = C0_ESC;
344	s += 2;
345	if (toupper (*s) == 'X')
346	/* append carriage-return for `M-xcommand' */
347	for (d++ = 'x', append = '\r', s++; isspace (s); s++) ;
348	}
349	for (; (ch = *s++);)
350	{
351	if (ch == '\\')
352	{
353	ch = *s++;
354	if (ch >= '0' && ch <= '7')
355	{ /* octal */
356	num = ch - '0';
357	for (i = 0; i < 2; i++, s++)
358	{
359	ch = *s;
360	if (ch < '0' \|\| ch > '7')
361	break;
362	num = num * 8 + ch - '0';
363	}
364	ch = (char)num;
365	}
366	else if (ch == 'a')
367	ch = C0_BEL; /* bell */
368	else if (ch == 'b')
369	ch = C0_BS; /* backspace */
370	else if (ch == 'E' \|\| ch == 'e')
371	ch = C0_ESC; /* escape */
372	else if (ch == 'n')
373	ch = '\n'; /* newline */
374	else if (ch == 'r')
375	ch = '\r'; /* carriage-return */
376	else if (ch == 't')
377	ch = C0_HT; /* tab */
378	}
379	else if (ch == '^')
380	{
381	ch = *s++;
382	ch = toupper (ch);
383	ch = (ch == '?' ? 127 : (ch - '@'));
384	}
385	*d++ = ch;
386	}
387
388	/* ESC] is an XTerm escape sequence, must be terminated */
389	if (*str == '\0' && str[1] == C0_ESC && str[2] == ']')
390	append = CHAR_ST;
391
392	/* add trailing character as required */
393	if (append && d[-1] != append)
394	*d++ = append;
395	*d = '\0';
396
397	return (d - str);
398	}
399
400	/*
401	* Split a comma-separated string into an array, stripping leading and
402	* trailing spaces (and paired quotes) from each entry. Empty strings
403	* are properly returned
404	* Caller should free each entry and array when done
405	*/
406	/* INTPROTO */
407	char **
408	rxvt_splitcommastring (const char *cs)
409	{
410	int l, n, p;
411	const char s, t;
412	char **ret;
413
414	if ((s = cs) == NULL)
415	s = "";
416
417	for (n = 1, t = s; *t; t++)
418	if (*t == ',')
419	n++;
420	ret = (char *)malloc ((n + 1) sizeof (char *));
421	ret[n] = NULL;
422
423	for (l = 0, t = s; l < n; l++)
424	{
425	for ( ; t && t != ','; t++) ;
426	p = t - s;
427	ret[l] = (char *)malloc (p + 1);
428	strncpy (ret[l], s, p);
429	ret[l][p] = '\0';
430	rxvt_Str_trim (ret[l]);
431	s = ++t;
432	}
433	return ret;
434	}
435
436	void
437	rxvt_freecommastring (char **cs)
438	{
439	for (int i = 0; cs[i]; ++i)
440	free (cs[i]);
441
442	free (cs);
443	}
444
445	/----------------------------------------------------------------------
446	* file searching
447	*/
448
449	/* #define DEBUG_SEARCH_PATH */
450
451	#if defined (XPM_BACKGROUND) \|\| (MENUBAR_MAX)
452	/*
453	* search for FILE in the current working directory, and within the
454	* colon-delimited PATHLIST, adding the file extension EXT if required.
455	*
456	* FILE is either semi-colon or zero terminated
457	*/
458	/* INTPROTO */
459	char *
460	rxvt_File_search_path (const char pathlist, const char file, const char *ext)
461	{
462	int maxpath, len;
463	const char p, path;
464	char name[256];
465
466	if (!access (file, R_OK)) /* found (plain name) in current directory */
467	return strdup (file);
468
469	/* semi-colon delimited */
470	if ((p = strchr (file, ';')))
471	len = (p - file);
472	else
473	len = strlen (file);
474
475	#ifdef DEBUG_SEARCH_PATH
476	getcwd (name, sizeof (name));
477	fprintf (stderr, "pwd: \"%s\"\n", name);
478	fprintf (stderr, "find: \"%.*s\"\n", len, file);
479	#endif
480
481	/* leave room for an extra '/' and trailing '\0' */
482	maxpath = sizeof (name) - (len + (ext ? strlen (ext) : 0) + 2);
483	if (maxpath <= 0)
484	return NULL;
485
486	/* check if we can find it now */
487	strncpy (name, file, len);
488	name[len] = '\0';
489
490	if (!access (name, R_OK))
491	return strdup (name);
492	if (ext)
493	{
494	strcat (name, ext);
495	if (!access (name, R_OK))
496	return strdup (name);
497	}
498	for (path = pathlist; path != NULL && *path != '\0'; path = p)
499	{
500	int n;
501
502	/* colon delimited */
503	if ((p = strchr (path, ':')) == NULL)
504	p = strchr (path, '\0');
505
506	n = (p - path);
507	if (*p != '\0')
508	p++;
509
510	if (n > 0 && n <= maxpath)
511	{
512	strncpy (name, path, n);
513	if (name[n - 1] != '/')
514	name[n++] = '/';
515	name[n] = '\0';
516	strncat (name, file, len);
517
518	if (!access (name, R_OK))
519	return strdup (name);
520	if (ext)
521	{
522	strcat (name, ext);
523	if (!access (name, R_OK))
524	return strdup (name);
525	}
526	}
527	}
528	return NULL;
529	}
530
531	/* INTPROTO */
532	char *
533	rxvt_File_find (const char file, const char ext, const char *path)
534	{
535	char *f;
536
537	if (file == NULL \|\| *file == '\0')
538	return NULL;
539
540	/* search environment variables here too */
541	if ((f = rxvt_File_search_path (path, file, ext)) == NULL)
542	#ifdef PATH_ENV
543	if ((f = rxvt_File_search_path (getenv (PATH_ENV), file, ext)) == NULL)
544	#endif
545	f = rxvt_File_search_path (getenv ("PATH"), file, ext);
546
547	#ifdef DEBUG_SEARCH_PATH
548	if (f)
549	fprintf (stderr, "found: \"%s\"\n", f);
550	#endif
551
552	return f;
553	}
554	#endif /* defined (XPM_BACKGROUND) \|\| (MENUBAR_MAX) */
555
556	/----------------------------------------------------------------------
557	* miscellaneous drawing routines
558	*/
559
560	/*
561	* Draw top/left and bottom/right border shadows around windows
562	*/
563	#if defined(RXVT_SCROLLBAR) \|\| defined(MENUBAR)
564	/* INTPROTO */
565	void
566	rxvt_Draw_Shadow (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int h)
567	{
568	int shadow;
569
570	shadow = (w == 0 \|\| h == 0) ? 1 : SHADOW;
571	w += x - 1;
572	h += y - 1;
573	for (; shadow-- > 0; x++, y++, w--, h--)
574	{
575	XDrawLine (display, win, topShadow, x, y, w, y);
576	XDrawLine (display, win, topShadow, x, y, x, h);
577	XDrawLine (display, win, botShadow, w, h, w, y + 1);
578	XDrawLine (display, win, botShadow, w, h, x + 1, h);
579	}
580	}
581	#endif
582
583	/* button shapes */
584	#ifdef MENUBAR
585	/* INTPROTO */
586	void
587	rxvt_Draw_Triangle (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int type)
588	{
589	switch (type)
590	{
591	case 'r': /* right triangle */
592	XDrawLine (display, win, topShadow, x, y, x, y + w);
593	XDrawLine (display, win, topShadow, x, y, x + w, y + w / 2);
594	XDrawLine (display, win, botShadow, x, y + w, x + w, y + w / 2);
595	break;
596
597	case 'l': /* left triangle */
598	XDrawLine (display, win, botShadow, x + w, y + w, x + w, y);
599	XDrawLine (display, win, botShadow, x + w, y + w, x, y + w / 2);
600	XDrawLine (display, win, topShadow, x, y + w / 2, x + w, y);
601	break;
602
603	case 'd': /* down triangle */
604	XDrawLine (display, win, topShadow, x, y, x + w / 2, y + w);
605	XDrawLine (display, win, topShadow, x, y, x + w, y);
606	XDrawLine (display, win, botShadow, x + w, y, x + w / 2, y + w);
607	break;
608
609	case 'u': /* up triangle */
610	XDrawLine (display, win, botShadow, x + w, y + w, x + w / 2, y);
611	XDrawLine (display, win, botShadow, x + w, y + w, x, y + w);
612	XDrawLine (display, win, topShadow, x, y + w, x + w / 2, y);
613	break;
614	#if 0
615	case 's': /* square */
616	XDrawLine (display, win, topShadow, x + w, y, x, y);
617	XDrawLine (display, win, topShadow, x, y, x, y + w);
618	XDrawLine (display, win, botShadow, x, y + w, x + w, y + w);
619	XDrawLine (display, win, botShadow, x + w, y + w, x + w, y);
620	break;
621	#endif
622
623	}
624	}
625	#endif
626	/----------------------- end-of-file (C source) -----------------------/