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)),
          *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;
  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:	1.21
Committed:	Mon Dec 13 07:26:18 2004 UTC (19 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-4_6
Changes since 1.20:	+18 -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	#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	*p = r;
108
109	unsigned char s = (unsigned char )str,
110	*e = s + len;
111
112	for (;;)
113	{
114	len = e - s;
115
116	if (len == 0)
117	break;
118	else if (s[0] < 0x80)
119	p++ = s++;
120	else if (len >= 2
121	&& s[0] >= 0xc2 && s[0] <= 0xdf
122	&& (s[1] & 0xc0) == 0x80)
123	{
124	*p++ = ((s[0] & 0x1f) << 6)
125	\| (s[1] & 0x3f);
126	s += 2;
127	}
128	else if (len >= 3
129	&& ( (s[0] == 0xe0 && s[1] >= 0xa0 && s[1] <= 0xbf)
130	\|\| (s[0] >= 0xe1 && s[0] <= 0xec && s[1] >= 0x80 && s[1] <= 0xbf)
131	\|\| (s[0] == 0xed && s[1] >= 0x80 && s[1] <= 0x9f)
132	\|\| (s[0] >= 0xee && s[0] <= 0xef && s[1] >= 0x80 && s[1] <= 0xbf)
133	)
134	&& (s[2] & 0xc0) == 0x80)
135	{
136	*p++ = ((s[0] & 0x0f) << 12)
137	\| ((s[1] & 0x3f) << 6)
138	\| (s[2] & 0x3f);
139	s += 3;
140	}
141	else if (len >= 4
142	&& ( (s[0] == 0xf0 && s[1] >= 0x90 && s[1] <= 0xbf)
143	\|\| (s[0] >= 0xf1 && s[0] <= 0xf3 && s[1] >= 0x80 && s[1] <= 0xbf)
144	\|\| (s[0] == 0xf4 && s[1] >= 0x80 && s[1] <= 0x8f)
145	)
146	&& (s[2] & 0xc0) == 0x80
147	&& (s[3] & 0xc0) == 0x80)
148	{
149	*p++ = ((s[0] & 0x07) << 18)
150	\| ((s[1] & 0x3f) << 12)
151	\| ((s[2] & 0x3f) << 6)
152	\| (s[3] & 0x3f);
153	s += 4;
154	}
155	else
156	{
157	*p++ = 0xfffd;
158	s++;
159	}
160	}
161
162	*p = 0;
163
164	return r;
165	}
166
167	char *
168	rxvt_strdup (const char *str)
169	{
170	return str ? strdup (str) : 0;
171	}
172
173	/* INTPROTO */
174	char *
175	rxvt_r_basename (const char *str)
176	{
177	char *base = strrchr (str, '/');
178
179	return (char *) (base ? base + 1 : str);
180	}
181
182	/*
183	* Print an error message
184	*/
185	/* INTPROTO */
186	void
187	rxvt_vlog (const char *fmt, va_list arg_ptr)
188	{
189	char msg[1024];
190
191	vsnprintf (msg, sizeof msg, fmt, arg_ptr);
192
193	if (GET_R && GET_R->log_hook)
194	(*GET_R->log_hook) (msg);
195	else
196	write (STDOUT_FILENO, msg, strlen (msg));
197	}
198
199	/* INTPROTO */
200	void
201	rxvt_log (const char *fmt,...)
202	{
203	va_list arg_ptr;
204
205	va_start (arg_ptr, fmt);
206	rxvt_vlog (fmt, arg_ptr);
207	va_end (arg_ptr);
208	}
209
210	/*
211	* Print an error message
212	*/
213	/* INTPROTO */
214	void
215	rxvt_warn (const char *fmt,...)
216	{
217	va_list arg_ptr;
218
219	rxvt_log ("%s: ", RESNAME);
220
221	va_start (arg_ptr, fmt);
222	rxvt_vlog (fmt, arg_ptr);
223	va_end (arg_ptr);
224	}
225
226	/* INTPROTO */
227	void
228	rxvt_fatal (const char *fmt,...)
229	{
230	va_list arg_ptr;
231
232	rxvt_log ("%s: ", RESNAME);
233
234	va_start (arg_ptr, fmt);
235	rxvt_vlog (fmt, arg_ptr);
236	va_end (arg_ptr);
237
238	rxvt_exit_failure ();
239	}
240
241	class rxvt_failure_exception rxvt_failure_exception;
242
243	/* INTPROTO */
244	void
245	rxvt_exit_failure ()
246	{
247	throw (rxvt_failure_exception);
248	}
249
250	/*
251	* check that the first characters of S1 match S2
252	*
253	* No Match
254	* return: 0
255	* Match
256	* return: strlen (S2)
257	*/
258	/* INTPROTO */
259	int
260	rxvt_Str_match (const char s1, const char s2)
261	{
262	int n = strlen (s2);
263
264	return ((strncmp (s1, s2, n) == 0) ? n : 0);
265	}
266
267	/* INTPROTO */
268	const char *
269	rxvt_Str_skip_space (const char *str)
270	{
271	if (str)
272	while (str && isspace (str))
273	str++;
274
275	return str;
276	}
277
278	/*
279	* remove leading/trailing space and strip-off leading/trailing quotes.
280	* in place.
281	*/
282	/* INTPROTO */
283	char *
284	rxvt_Str_trim (char *str)
285	{
286	char r, s;
287	int n;
288
289	if (!str \|\| !str) / shortcut */
290	return str;
291
292	/* skip leading spaces */
293	for (s = str; s && isspace (s); s++) ;
294	/* goto end of string */
295	for (n = 0, r = s; *r++; n++) ;
296	r -= 2;
297	/* dump return */
298	if (n > 0 && *r == '\n')
299	n--, r--;
300	/* backtrack along trailing spaces */
301	for (; n > 0 && isspace (*r); r--, n--) ;
302	/* skip matching leading/trailing quotes */
303	if (s == '"' && r == '"' && n > 1)
304	{
305	s++;
306	n -= 2;
307	}
308
309	/* copy back over: forwards copy */
310	for (r = str; n; n--)
311	r++ = s++;
312	*r = '\0';
313
314	return str;
315	}
316
317	/*
318	* in-place interpretation of string:
319	*
320	* backslash-escaped: "\a\b\E\e\n\r\t", "\octal"
321	* Ctrl chars: ^@ .. ^_, ^?
322	*
323	* Emacs-style: "M-" prefix
324	*
325	* Also,
326	* "M-x" prefixed strings, append "\r" if needed
327	* "\E]" prefixed strings (XTerm escape sequence) append ST if needed
328	*
329	* returns the converted string length
330	*/
331	/* INTPROTO */
332	int
333	rxvt_Str_escaped (char *str)
334	{
335	char ch, s, d;
336	int i, num, append = 0;
337
338	if (!str \|\| !*str)
339	return 0;
340
341	d = s = str;
342
343	if (*s == 'M' && s[1] == '-')
344	{
345	/* Emacs convenience, replace leading `M-..' with `\E..' */
346	*d++ = C0_ESC;
347	s += 2;
348	if (toupper (*s) == 'X')
349	/* append carriage-return for `M-xcommand' */
350	for (d++ = 'x', append = '\r', s++; isspace (s); s++) ;
351	}
352	for (; (ch = *s++);)
353	{
354	if (ch == '\\')
355	{
356	ch = *s++;
357	if (ch >= '0' && ch <= '7')
358	{ /* octal */
359	num = ch - '0';
360	for (i = 0; i < 2; i++, s++)
361	{
362	ch = *s;
363	if (ch < '0' \|\| ch > '7')
364	break;
365	num = num * 8 + ch - '0';
366	}
367	ch = (char)num;
368	}
369	else if (ch == 'a')
370	ch = C0_BEL; /* bell */
371	else if (ch == 'b')
372	ch = C0_BS; /* backspace */
373	else if (ch == 'E' \|\| ch == 'e')
374	ch = C0_ESC; /* escape */
375	else if (ch == 'n')
376	ch = '\n'; /* newline */
377	else if (ch == 'r')
378	ch = '\r'; /* carriage-return */
379	else if (ch == 't')
380	ch = C0_HT; /* tab */
381	}
382	else if (ch == '^')
383	{
384	ch = *s++;
385	ch = toupper (ch);
386	ch = (ch == '?' ? 127 : (ch - '@'));
387	}
388	*d++ = ch;
389	}
390
391	/* ESC] is an XTerm escape sequence, must be terminated */
392	if (*str == '\0' && str[1] == C0_ESC && str[2] == ']')
393	append = CHAR_ST;
394
395	/* add trailing character as required */
396	if (append && d[-1] != append)
397	*d++ = append;
398	*d = '\0';
399
400	return (d - str);
401	}
402
403	/*
404	* Split a comma-separated string into an array, stripping leading and
405	* trailing spaces (and paired quotes) from each entry. Empty strings
406	* are properly returned
407	* Caller should free each entry and array when done
408	*/
409	/* INTPROTO */
410	char **
411	rxvt_splitcommastring (const char *cs)
412	{
413	int l, n, p;
414	const char s, t;
415	char **ret;
416
417	if ((s = cs) == NULL)
418	s = "";
419
420	for (n = 1, t = s; *t; t++)
421	if (*t == ',')
422	n++;
423	ret = (char *)malloc ((n + 1) sizeof (char *));
424	ret[n] = NULL;
425
426	for (l = 0, t = s; l < n; l++)
427	{
428	for ( ; t && t != ','; t++) ;
429	p = t - s;
430	ret[l] = (char *)malloc (p + 1);
431	strncpy (ret[l], s, p);
432	ret[l][p] = '\0';
433	rxvt_Str_trim (ret[l]);
434	s = ++t;
435	}
436	return ret;
437	}
438
439	void
440	rxvt_freecommastring (char **cs)
441	{
442	for (int i = 0; cs[i]; ++i)
443	free (cs[i]);
444
445	free (cs);
446	}
447
448	/----------------------------------------------------------------------
449	* file searching
450	*/
451
452	/* #define DEBUG_SEARCH_PATH */
453
454	#if defined (XPM_BACKGROUND) \|\| (MENUBAR_MAX)
455	/*
456	* search for FILE in the current working directory, and within the
457	* colon-delimited PATHLIST, adding the file extension EXT if required.
458	*
459	* FILE is either semi-colon or zero terminated
460	*/
461	/* INTPROTO */
462	char *
463	rxvt_File_search_path (const char pathlist, const char file, const char *ext)
464	{
465	int maxpath, len;
466	const char p, path;
467	char name[256];
468
469	if (!access (file, R_OK)) /* found (plain name) in current directory */
470	return strdup (file);
471
472	/* semi-colon delimited */
473	if ((p = strchr (file, ';')))
474	len = (p - file);
475	else
476	len = strlen (file);
477
478	#ifdef DEBUG_SEARCH_PATH
479	getcwd (name, sizeof (name));
480	fprintf (stderr, "pwd: \"%s\"\n", name);
481	fprintf (stderr, "find: \"%.*s\"\n", len, file);
482	#endif
483
484	/* leave room for an extra '/' and trailing '\0' */
485	maxpath = sizeof (name) - (len + (ext ? strlen (ext) : 0) + 2);
486	if (maxpath <= 0)
487	return NULL;
488
489	/* check if we can find it now */
490	strncpy (name, file, len);
491	name[len] = '\0';
492
493	if (!access (name, R_OK))
494	return strdup (name);
495	if (ext)
496	{
497	strcat (name, ext);
498	if (!access (name, R_OK))
499	return strdup (name);
500	}
501	for (path = pathlist; path != NULL && *path != '\0'; path = p)
502	{
503	int n;
504
505	/* colon delimited */
506	if ((p = strchr (path, ':')) == NULL)
507	p = strchr (path, '\0');
508
509	n = (p - path);
510	if (*p != '\0')
511	p++;
512
513	if (n > 0 && n <= maxpath)
514	{
515	strncpy (name, path, n);
516	if (name[n - 1] != '/')
517	name[n++] = '/';
518	name[n] = '\0';
519	strncat (name, file, len);
520
521	if (!access (name, R_OK))
522	return strdup (name);
523	if (ext)
524	{
525	strcat (name, ext);
526	if (!access (name, R_OK))
527	return strdup (name);
528	}
529	}
530	}
531	return NULL;
532	}
533
534	/* INTPROTO */
535	char *
536	rxvt_File_find (const char file, const char ext, const char *path)
537	{
538	char *f;
539
540	if (file == NULL \|\| *file == '\0')
541	return NULL;
542
543	/* search environment variables here too */
544	if ((f = rxvt_File_search_path (path, file, ext)) == NULL)
545	#ifdef PATH_ENV
546	if ((f = rxvt_File_search_path (getenv (PATH_ENV), file, ext)) == NULL)
547	#endif
548	f = rxvt_File_search_path (getenv ("PATH"), file, ext);
549
550	#ifdef DEBUG_SEARCH_PATH
551	if (f)
552	fprintf (stderr, "found: \"%s\"\n", f);
553	#endif
554
555	return f;
556	}
557	#endif /* defined (XPM_BACKGROUND) \|\| (MENUBAR_MAX) */
558
559	/----------------------------------------------------------------------
560	* miscellaneous drawing routines
561	*/
562
563	/*
564	* Draw top/left and bottom/right border shadows around windows
565	*/
566	#if defined(RXVT_SCROLLBAR) \|\| defined(MENUBAR)
567	/* INTPROTO */
568	void
569	rxvt_Draw_Shadow (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int h)
570	{
571	int shadow;
572
573	shadow = (w == 0 \|\| h == 0) ? 1 : SHADOW;
574	w += x - 1;
575	h += y - 1;
576	for (; shadow-- > 0; x++, y++, w--, h--)
577	{
578	XDrawLine (display, win, topShadow, x, y, w, y);
579	XDrawLine (display, win, topShadow, x, y, x, h);
580	XDrawLine (display, win, botShadow, w, h, w, y + 1);
581	XDrawLine (display, win, botShadow, w, h, x + 1, h);
582	}
583	}
584	#endif
585
586	/* button shapes */
587	#ifdef MENUBAR
588	/* INTPROTO */
589	void
590	rxvt_Draw_Triangle (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int type)
591	{
592	switch (type)
593	{
594	case 'r': /* right triangle */
595	XDrawLine (display, win, topShadow, x, y, x, y + w);
596	XDrawLine (display, win, topShadow, x, y, x + w, y + w / 2);
597	XDrawLine (display, win, botShadow, x, y + w, x + w, y + w / 2);
598	break;
599
600	case 'l': /* left triangle */
601	XDrawLine (display, win, botShadow, x + w, y + w, x + w, y);
602	XDrawLine (display, win, botShadow, x + w, y + w, x, y + w / 2);
603	XDrawLine (display, win, topShadow, x, y + w / 2, x + w, y);
604	break;
605
606	case 'd': /* down triangle */
607	XDrawLine (display, win, topShadow, x, y, x + w / 2, y + w);
608	XDrawLine (display, win, topShadow, x, y, x + w, y);
609	XDrawLine (display, win, botShadow, x + w, y, x + w / 2, y + w);
610	break;
611
612	case 'u': /* up triangle */
613	XDrawLine (display, win, botShadow, x + w, y + w, x + w / 2, y);
614	XDrawLine (display, win, botShadow, x + w, y + w, x, y + w);
615	XDrawLine (display, win, topShadow, x, y + w, x + w / 2, y);
616	break;
617	#if 0
618	case 's': /* square */
619	XDrawLine (display, win, topShadow, x + w, y, x, y);
620	XDrawLine (display, win, topShadow, x, y, x, y + w);
621	XDrawLine (display, win, botShadow, x, y + w, x + w, y + w);
622	XDrawLine (display, win, botShadow, x + w, y + w, x + w, y);
623	break;
624	#endif
625
626	}
627	}
628	#endif
629	/----------------------- end-of-file (C source) -----------------------/