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;
}

/* 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;

  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
 */
/* 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 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:	1.26
Committed:	Wed Feb 16 20:32:05 2005 UTC (19 years, 3 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.25:	+0 -1 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	/* INTPROTO */
173	char *
174	rxvt_r_basename (const char *str)
175	{
176	char *base = strrchr (str, '/');
177
178	return (char *) (base ? base + 1 : str);
179	}
180
181	/*
182	* Print an error message
183	*/
184	/* INTPROTO */
185	void
186	rxvt_vlog (const char *fmt, va_list arg_ptr)
187	{
188	char msg[1024];
189
190	vsnprintf (msg, sizeof msg, fmt, arg_ptr);
191
192	if (GET_R && GET_R->log_hook)
193	(*GET_R->log_hook) (msg);
194	else
195	write (STDOUT_FILENO, msg, strlen (msg));
196	}
197
198	/* INTPROTO */
199	void
200	rxvt_log (const char *fmt,...)
201	{
202	va_list arg_ptr;
203
204	va_start (arg_ptr, fmt);
205	rxvt_vlog (fmt, arg_ptr);
206	va_end (arg_ptr);
207	}
208
209	/*
210	* Print an error message
211	*/
212	/* INTPROTO */
213	void
214	rxvt_warn (const char *fmt,...)
215	{
216	va_list arg_ptr;
217
218	rxvt_log ("%s: ", RESNAME);
219
220	va_start (arg_ptr, fmt);
221	rxvt_vlog (fmt, arg_ptr);
222	va_end (arg_ptr);
223	}
224
225	/* INTPROTO */
226	void
227	rxvt_fatal (const char *fmt,...)
228	{
229	va_list arg_ptr;
230
231	rxvt_log ("%s: ", RESNAME);
232
233	va_start (arg_ptr, fmt);
234	rxvt_vlog (fmt, arg_ptr);
235	va_end (arg_ptr);
236
237	rxvt_exit_failure ();
238	}
239
240	class rxvt_failure_exception rxvt_failure_exception;
241
242	/* INTPROTO */
243	void
244	rxvt_exit_failure ()
245	{
246	throw (rxvt_failure_exception);
247	}
248
249	/*
250	* check that the first characters of S1 match S2
251	*
252	* No Match
253	* return: 0
254	* Match
255	* return: strlen (S2)
256	*/
257	/* INTPROTO */
258	int
259	rxvt_Str_match (const char s1, const char s2)
260	{
261	int n = strlen (s2);
262
263	return ((strncmp (s1, s2, n) == 0) ? n : 0);
264	}
265
266	/* INTPROTO */
267	const char *
268	rxvt_Str_skip_space (const char *str)
269	{
270	if (str)
271	while (str && isspace (str))
272	str++;
273
274	return str;
275	}
276
277	/*
278	* remove leading/trailing space and strip-off leading/trailing quotes.
279	* in place.
280	*/
281	/* INTPROTO */
282	char *
283	rxvt_Str_trim (char *str)
284	{
285	char r, s;
286
287	if (!str \|\| !str) / shortcut */
288	return str;
289
290	/* skip leading spaces */
291	for (s = str; s && isspace (s); s++) ;
292
293	/* goto end of string */
294	r = s + strlen (s) - 1;
295
296	/* dump return and other trailing whitespace */
297	while (r > s && isspace (*r))
298	r--;
299
300	#if 0
301	/* skip matching leading/trailing quotes */
302	if (s == '"' && r == '"' && n > 1)
303	{
304	s++;
305	n -= 2;
306	}
307	#endif
308
309	memmove (str, s, r + 1 - s);
310	str[r + 1 - s] = 0;
311
312	return str;
313	}
314
315	/*
316	* in-place interpretation of string:
317	*
318	* backslash-escaped: "\a\b\E\e\n\r\t", "\octal"
319	* Ctrl chars: ^@ .. ^_, ^?
320	*
321	* Emacs-style: "M-" prefix
322	*
323	* Also,
324	* "M-x" prefixed strings, append "\r" if needed
325	* "\E]" prefixed strings (XTerm escape sequence) append ST if needed
326	*
327	* returns the converted string length
328	*/
329	/* INTPROTO */
330	int
331	rxvt_Str_escaped (char *str)
332	{
333	char ch, s, d;
334	int i, num, append = 0;
335
336	if (!str \|\| !*str)
337	return 0;
338
339	d = s = str;
340
341	if (*s == 'M' && s[1] == '-')
342	{
343	/* Emacs convenience, replace leading `M-..' with `\E..' */
344	*d++ = C0_ESC;
345	s += 2;
346	if (toupper (*s) == 'X')
347	/* append carriage-return for `M-xcommand' */
348	for (d++ = 'x', append = '\r', s++; isspace (s); s++) ;
349	}
350	for (; (ch = *s++);)
351	{
352	if (ch == '\\')
353	{
354	ch = *s++;
355	if (ch >= '0' && ch <= '7')
356	{ /* octal */
357	num = ch - '0';
358	for (i = 0; i < 2; i++, s++)
359	{
360	ch = *s;
361	if (ch < '0' \|\| ch > '7')
362	break;
363	num = num * 8 + ch - '0';
364	}
365	ch = (char)num;
366	}
367	else if (ch == 'a')
368	ch = C0_BEL; /* bell */
369	else if (ch == 'b')
370	ch = C0_BS; /* backspace */
371	else if (ch == 'E' \|\| ch == 'e')
372	ch = C0_ESC; /* escape */
373	else if (ch == 'n')
374	ch = '\n'; /* newline */
375	else if (ch == 'r')
376	ch = '\r'; /* carriage-return */
377	else if (ch == 't')
378	ch = C0_HT; /* tab */
379	}
380	else if (ch == '^')
381	{
382	ch = *s++;
383	ch = toupper (ch);
384	ch = (ch == '?' ? 127 : (ch - '@'));
385	}
386	*d++ = ch;
387	}
388
389	/* ESC] is an XTerm escape sequence, must be terminated */
390	if (*str == '\0' && str[1] == C0_ESC && str[2] == ']')
391	append = CHAR_ST;
392
393	/* add trailing character as required */
394	if (append && d[-1] != append)
395	*d++ = append;
396	*d = '\0';
397
398	return (d - str);
399	}
400
401	/*
402	* Split a comma-separated string into an array, stripping leading and
403	* trailing spaces from each entry. Empty strings 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
421	ret = (char *)malloc ((n + 1) sizeof (char *));
422	ret[n] = NULL;
423
424	for (l = 0, t = s; l < n; l++)
425	{
426	for ( ; t && t != ','; t++) ;
427	p = t - s;
428	ret[l] = (char *)malloc (p + 1);
429	strncpy (ret[l], s, p);
430	ret[l][p] = '\0';
431	rxvt_Str_trim (ret[l]);
432	s = ++t;
433	}
434
435	return ret;
436	}
437
438	void
439	rxvt_freecommastring (char **cs)
440	{
441	for (int i = 0; cs[i]; ++i)
442	free (cs[i]);
443
444	free (cs);
445	}
446
447	/----------------------------------------------------------------------
448	* file searching
449	*/
450
451	/* #define DEBUG_SEARCH_PATH */
452
453	#if defined (XPM_BACKGROUND) \|\| (MENUBAR_MAX)
454	/*
455	* search for FILE in the current working directory, and within the
456	* colon-delimited PATHLIST, adding the file extension EXT if required.
457	*
458	* FILE is either semi-colon or zero terminated
459	*/
460	/* INTPROTO */
461	char *
462	rxvt_File_search_path (const char pathlist, const char file, const char *ext)
463	{
464	int maxpath, len;
465	const char p, path;
466	char name[256];
467
468	if (!access (file, R_OK)) /* found (plain name) in current directory */
469	return strdup (file);
470
471	/* semi-colon delimited */
472	if ((p = strchr (file, ';')))
473	len = (p - file);
474	else
475	len = strlen (file);
476
477	#ifdef DEBUG_SEARCH_PATH
478	getcwd (name, sizeof (name));
479	fprintf (stderr, "pwd: \"%s\"\n", name);
480	fprintf (stderr, "find: \"%.*s\"\n", len, file);
481	#endif
482
483	/* leave room for an extra '/' and trailing '\0' */
484	maxpath = sizeof (name) - (len + (ext ? strlen (ext) : 0) + 2);
485	if (maxpath <= 0)
486	return NULL;
487
488	/* check if we can find it now */
489	strncpy (name, file, len);
490	name[len] = '\0';
491
492	if (!access (name, R_OK))
493	return strdup (name);
494	if (ext)
495	{
496	strcat (name, ext);
497	if (!access (name, R_OK))
498	return strdup (name);
499	}
500	for (path = pathlist; path != NULL && *path != '\0'; path = p)
501	{
502	int n;
503
504	/* colon delimited */
505	if ((p = strchr (path, ':')) == NULL)
506	p = strchr (path, '\0');
507
508	n = (p - path);
509	if (*p != '\0')
510	p++;
511
512	if (n > 0 && n <= maxpath)
513	{
514	strncpy (name, path, n);
515	if (name[n - 1] != '/')
516	name[n++] = '/';
517	name[n] = '\0';
518	strncat (name, file, len);
519
520	if (!access (name, R_OK))
521	return strdup (name);
522	if (ext)
523	{
524	strcat (name, ext);
525	if (!access (name, R_OK))
526	return strdup (name);
527	}
528	}
529	}
530	return NULL;
531	}
532
533	/* INTPROTO */
534	char *
535	rxvt_File_find (const char file, const char ext, const char *path)
536	{
537	char *f;
538
539	if (file == NULL \|\| *file == '\0')
540	return NULL;
541
542	/* search environment variables here too */
543	if ((f = rxvt_File_search_path (path, file, ext)) == NULL)
544	#ifdef PATH_ENV
545	if ((f = rxvt_File_search_path (getenv (PATH_ENV), file, ext)) == NULL)
546	#endif
547	f = rxvt_File_search_path (getenv ("PATH"), file, ext);
548
549	#ifdef DEBUG_SEARCH_PATH
550	if (f)
551	fprintf (stderr, "found: \"%s\"\n", f);
552	#endif
553
554	return f;
555	}
556	#endif /* defined (XPM_BACKGROUND) \|\| (MENUBAR_MAX) */
557
558	/----------------------------------------------------------------------
559	* miscellaneous drawing routines
560	*/
561
562	/*
563	* Draw top/left and bottom/right border shadows around windows
564	*/
565	#if defined(RXVT_SCROLLBAR) \|\| defined(MENUBAR)
566	/* INTPROTO */
567	void
568	rxvt_Draw_Shadow (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int h)
569	{
570	int shadow;
571
572	shadow = (w == 0 \|\| h == 0) ? 1 : SHADOW;
573	w += x - 1;
574	h += y - 1;
575	for (; shadow-- > 0; x++, y++, w--, h--)
576	{
577	XDrawLine (display, win, topShadow, x, y, w, y);
578	XDrawLine (display, win, topShadow, x, y, x, h);
579	XDrawLine (display, win, botShadow, w, h, w, y + 1);
580	XDrawLine (display, win, botShadow, w, h, x + 1, h);
581	}
582	}
583	#endif
584
585	/* button shapes */
586	#ifdef MENUBAR
587	/* INTPROTO */
588	void
589	rxvt_Draw_Triangle (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int type)
590	{
591	switch (type)
592	{
593	case 'r': /* right triangle */
594	XDrawLine (display, win, topShadow, x, y, x, y + w);
595	XDrawLine (display, win, topShadow, x, y, x + w, y + w / 2);
596	XDrawLine (display, win, botShadow, x, y + w, x + w, y + w / 2);
597	break;
598
599	case 'l': /* left triangle */
600	XDrawLine (display, win, botShadow, x + w, y + w, x + w, y);
601	XDrawLine (display, win, botShadow, x + w, y + w, x, y + w / 2);
602	XDrawLine (display, win, topShadow, x, y + w / 2, x + w, y);
603	break;
604
605	case 'd': /* down triangle */
606	XDrawLine (display, win, topShadow, x, y, x + w / 2, y + w);
607	XDrawLine (display, win, topShadow, x, y, x + w, y);
608	XDrawLine (display, win, botShadow, x + w, y, x + w / 2, y + w);
609	break;
610
611	case 'u': /* up triangle */
612	XDrawLine (display, win, botShadow, x + w, y + w, x + w / 2, y);
613	XDrawLine (display, win, botShadow, x + w, y + w, x, y + w);
614	XDrawLine (display, win, topShadow, x, y + w, x + w / 2, y);
615	break;
616	#if 0
617	case 's': /* square */
618	XDrawLine (display, win, topShadow, x + w, y, x, y);
619	XDrawLine (display, win, topShadow, x, y, x, y + w);
620	XDrawLine (display, win, botShadow, x, y + w, x + w, y + w);
621	XDrawLine (display, win, botShadow, x + w, y + w, x + w, y);
622	break;
623	#endif
624
625	}
626	}
627	#endif
628	/----------------------- end-of-file (C source) -----------------------/