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 *
#	User	Rev	Content
1	pcg	1.1	/---------------------------------C----------------------------------
2	pcg	1.13	* File: misc.C
3	pcg	1.1	----------------------------------------------------------------------
4			*
5			* All portions of code are copyright by their respective author/s.
6			* Copyright (c) 1996 mj olesen <olesen@me.QueensU.CA> Queen's Univ at Kingston
7			* Copyright (c) 1997,1998 Oezguer Kesim <kesim@math.fu-berlin.de>
8			* Copyright (c) 1998-2000 Geoff Wing <gcw@pobox.com>
9	pcg	1.8	* Copyright (c) 2003-2004 Marc Lehmann <pcg@goof.com>
10	pcg	1.1	*
11			* This program is free software; you can redistribute it and/or modify
12			* it under the terms of the GNU General Public License as published by
13			* the Free Software Foundation; either version 2 of the License, or
14			* (at your option) any later version.
15			*
16			* This program is distributed in the hope that it will be useful,
17			* but WITHOUT ANY WARRANTY; without even the implied warranty of
18			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19			* GNU General Public License for more details.
20			*
21			* You should have received a copy of the GNU General Public License
22			* along with this program; if not, write to the Free Software
23			* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24			----------------------------------------------------------------------/
25
26			#include "../config.h" /* NECESSARY */
27			#include "rxvt.h" /* NECESSARY */
28			#include "misc.intpro" /* PROTOS for internal routines */
29
30	pcg	1.3	char *
31	pcg	1.10	rxvt_wcstombs (const wchar_t *str, int len)
32			{
33	root	1.19	if (len < 0) len = wcslen (str);
34
35	pcg	1.10	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	root	1.19	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	root	1.20	while (len)
112	root	1.19	{
113			if (s[0] < 0x80)
114	root	1.20	{
115			p++ = s++; len--;
116			}
117	root	1.19	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	root	1.20	s += 2; len -= 2;
124	root	1.19	}
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	root	1.20	s += 3; len -= 3;
137	root	1.19	}
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	root	1.20	s += 4; len -= 4;
151	root	1.19	}
152			else
153			{
154			*p++ = 0xfffd;
155	root	1.20	s++; len--;
156	root	1.19	}
157			}
158
159			*p = 0;
160
161			return r;
162			}
163
164	pcg	1.10	char *
165	pcg	1.3	rxvt_strdup (const char *str)
166			{
167			return str ? strdup (str) : 0;
168			}
169
170	root	1.15	/* INTPROTO */
171	pcg	1.8	char *
172	pcg	1.7	rxvt_r_basename (const char *str)
173	pcg	1.1	{
174	root	1.15	char *base = strrchr (str, '/');
175	pcg	1.1
176	pcg	1.7	return (char *) (base ? base + 1 : str);
177	pcg	1.1	}
178
179			/*
180			* Print an error message
181			*/
182	root	1.15	/* INTPROTO */
183	pcg	1.1	void
184	pcg	1.12	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	root	1.15	/* INTPROTO */
197	pcg	1.12	void
198			rxvt_log (const char *fmt,...)
199	pcg	1.1	{
200	pcg	1.8	va_list arg_ptr;
201	pcg	1.1
202	pcg	1.7	va_start (arg_ptr, fmt);
203	pcg	1.12	rxvt_vlog (fmt, arg_ptr);
204	pcg	1.7	va_end (arg_ptr);
205	pcg	1.1	}
206
207			/*
208	pcg	1.12	* Print an error message
209			*/
210	root	1.15	/* INTPROTO */
211	pcg	1.12	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	root	1.15	/* INTPROTO */
224	pcg	1.12	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	root	1.15	/* INTPROTO */
241	pcg	1.12	void
242			rxvt_exit_failure ()
243			{
244			throw (rxvt_failure_exception);
245			}
246
247			/*
248	pcg	1.1	* check that the first characters of S1 match S2
249			*
250			* No Match
251			* return: 0
252			* Match
253	root	1.15	* return: strlen (S2)
254	pcg	1.1	*/
255	root	1.15	/* INTPROTO */
256	pcg	1.1	int
257	pcg	1.7	rxvt_Str_match (const char s1, const char s2)
258	pcg	1.1	{
259	root	1.15	int n = strlen (s2);
260	pcg	1.1
261	root	1.15	return ((strncmp (s1, s2, n) == 0) ? n : 0);
262	pcg	1.1	}
263
264	root	1.15	/* INTPROTO */
265	pcg	1.8	const char *
266	pcg	1.7	rxvt_Str_skip_space (const char *str)
267	pcg	1.1	{
268	pcg	1.5	if (str)
269	pcg	1.7	while (str && isspace (str))
270	pcg	1.5	str++;
271	pcg	1.8
272	pcg	1.5	return str;
273	pcg	1.1	}
274
275			/*
276			* remove leading/trailing space and strip-off leading/trailing quotes.
277			* in place.
278			*/
279	root	1.15	/* INTPROTO */
280	pcg	1.1	char *
281	pcg	1.7	rxvt_Str_trim (char *str)
282	pcg	1.1	{
283	pcg	1.8	char r, s;
284			int n;
285	pcg	1.1
286	pcg	1.5	if (!str \|\| !str) / shortcut */
287			return str;
288	pcg	1.1
289	pcg	1.5	/* skip leading spaces */
290	pcg	1.7	for (s = str; s && isspace (s); s++) ;
291	pcg	1.5	/* 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	pcg	1.7	for (; n > 0 && isspace (*r); r--, n--) ;
299	pcg	1.5	/* skip matching leading/trailing quotes */
300			if (s == '"' && r == '"' && n > 1)
301			{
302			s++;
303			n -= 2;
304	pcg	1.1	}
305	pcg	1.8
306	pcg	1.5	/* copy back over: forwards copy */
307			for (r = str; n; n--)
308			r++ = s++;
309			*r = '\0';
310	pcg	1.1
311	pcg	1.5	return str;
312	pcg	1.1	}
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	root	1.15	/* INTPROTO */
329	pcg	1.1	int
330	pcg	1.7	rxvt_Str_escaped (char *str)
331	pcg	1.1	{
332	pcg	1.5	char ch, s, d;
333			int i, num, append = 0;
334	pcg	1.1
335	pcg	1.5	if (!str \|\| !*str)
336			return 0;
337	pcg	1.1
338	pcg	1.5	d = s = str;
339	pcg	1.1
340	pcg	1.5	if (*s == 'M' && s[1] == '-')
341			{
342			/* Emacs convenience, replace leading `M-..' with `\E..' */
343			*d++ = C0_ESC;
344			s += 2;
345	pcg	1.7	if (toupper (*s) == 'X')
346	pcg	1.5	/* append carriage-return for `M-xcommand' */
347	pcg	1.7	for (d++ = 'x', append = '\r', s++; isspace (s); s++) ;
348	pcg	1.1	}
349	pcg	1.5	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	pcg	1.7	ch = toupper (ch);
383	pcg	1.5	ch = (ch == '?' ? 127 : (ch - '@'));
384			}
385			*d++ = ch;
386	pcg	1.1	}
387
388	pcg	1.5	/* 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	pcg	1.1
397	pcg	1.5	return (d - str);
398	pcg	1.1	}
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	root	1.15	/* INTPROTO */
407	pcg	1.1	char **
408	pcg	1.7	rxvt_splitcommastring (const char *cs)
409	pcg	1.1	{
410	pcg	1.5	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	pcg	1.7	ret = (char *)malloc ((n + 1) sizeof (char *));
421	pcg	1.5	ret[n] = NULL;
422
423			for (l = 0, t = s; l < n; l++)
424			{
425			for ( ; t && t != ','; t++) ;
426			p = t - s;
427	pcg	1.7	ret[l] = (char *)malloc (p + 1);
428			strncpy (ret[l], s, p);
429	pcg	1.5	ret[l][p] = '\0';
430	pcg	1.7	rxvt_Str_trim (ret[l]);
431	pcg	1.5	s = ++t;
432	pcg	1.1	}
433	pcg	1.5	return ret;
434	pcg	1.1	}
435
436	root	1.16	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	pcg	1.1	/----------------------------------------------------------------------
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	pcg	1.7	rxvt_File_search_path (const char pathlist, const char file, const char *ext)
461	pcg	1.1	{
462	pcg	1.5	int maxpath, len;
463			const char p, path;
464			char name[256];
465
466	pcg	1.7	if (!access (file, R_OK)) /* found (plain name) in current directory */
467	root	1.15	return strdup (file);
468	pcg	1.5
469			/* semi-colon delimited */
470	root	1.15	if ((p = strchr (file, ';')))
471	pcg	1.5	len = (p - file);
472			else
473	root	1.15	len = strlen (file);
474	pcg	1.1
475			#ifdef DEBUG_SEARCH_PATH
476	pcg	1.7	getcwd (name, sizeof (name));
477			fprintf (stderr, "pwd: \"%s\"\n", name);
478			fprintf (stderr, "find: \"%.*s\"\n", len, file);
479	pcg	1.1	#endif
480
481	pcg	1.5	/* leave room for an extra '/' and trailing '\0' */
482	root	1.15	maxpath = sizeof (name) - (len + (ext ? strlen (ext) : 0) + 2);
483	pcg	1.5	if (maxpath <= 0)
484			return NULL;
485
486			/* check if we can find it now */
487	root	1.15	strncpy (name, file, len);
488	pcg	1.5	name[len] = '\0';
489
490	pcg	1.7	if (!access (name, R_OK))
491	root	1.15	return strdup (name);
492	pcg	1.5	if (ext)
493			{
494	root	1.15	strcat (name, ext);
495	pcg	1.7	if (!access (name, R_OK))
496	root	1.15	return strdup (name);
497	pcg	1.1	}
498	pcg	1.5	for (path = pathlist; path != NULL && *path != '\0'; path = p)
499			{
500			int n;
501
502			/* colon delimited */
503	root	1.15	if ((p = strchr (path, ':')) == NULL)
504			p = strchr (path, '\0');
505	pcg	1.5
506			n = (p - path);
507			if (*p != '\0')
508			p++;
509
510			if (n > 0 && n <= maxpath)
511			{
512	root	1.15	strncpy (name, path, n);
513	pcg	1.5	if (name[n - 1] != '/')
514			name[n++] = '/';
515			name[n] = '\0';
516	root	1.15	strncat (name, file, len);
517	pcg	1.5
518	pcg	1.7	if (!access (name, R_OK))
519	root	1.15	return strdup (name);
520	pcg	1.5	if (ext)
521			{
522	root	1.15	strcat (name, ext);
523	pcg	1.7	if (!access (name, R_OK))
524	root	1.15	return strdup (name);
525	pcg	1.5	}
526			}
527	pcg	1.1	}
528	pcg	1.5	return NULL;
529	pcg	1.1	}
530
531	root	1.15	/* INTPROTO */
532	pcg	1.1	char *
533	pcg	1.7	rxvt_File_find (const char file, const char ext, const char *path)
534	pcg	1.1	{
535	pcg	1.5	char *f;
536	pcg	1.1
537	pcg	1.5	if (file == NULL \|\| *file == '\0')
538			return NULL;
539	pcg	1.1
540	pcg	1.5	/* search environment variables here too */
541	pcg	1.7	if ((f = rxvt_File_search_path (path, file, ext)) == NULL)
542	pcg	1.1	#ifdef PATH_ENV
543	pcg	1.7	if ((f = rxvt_File_search_path (getenv (PATH_ENV), file, ext)) == NULL)
544	pcg	1.1	#endif
545	pcg	1.7	f = rxvt_File_search_path (getenv ("PATH"), file, ext);
546	pcg	1.1
547			#ifdef DEBUG_SEARCH_PATH
548	pcg	1.5	if (f)
549	pcg	1.7	fprintf (stderr, "found: \"%s\"\n", f);
550	pcg	1.1	#endif
551
552	pcg	1.5	return f;
553	pcg	1.1	}
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	root	1.15	/* INTPROTO */
565	pcg	1.1	void
566	pcg	1.7	rxvt_Draw_Shadow (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int h)
567	pcg	1.1	{
568	pcg	1.5	int shadow;
569	pcg	1.1
570	pcg	1.5	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	pcg	1.7	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	pcg	1.1	}
580			}
581			#endif
582
583			/* button shapes */
584			#ifdef MENUBAR
585	root	1.15	/* INTPROTO */
586	pcg	1.1	void
587	pcg	1.7	rxvt_Draw_Triangle (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int type)
588	pcg	1.1	{
589	pcg	1.5	switch (type)
590			{
591			case 'r': /* right triangle */
592	pcg	1.7	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	pcg	1.5	break;
596
597			case 'l': /* left triangle */
598	pcg	1.7	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	pcg	1.5	break;
602
603			case 'd': /* down triangle */
604	pcg	1.7	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	pcg	1.5	break;
608
609			case 'u': /* up triangle */
610	pcg	1.7	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	pcg	1.5	break;
614	pcg	1.1	#if 0
615	pcg	1.5	case 's': /* square */
616	pcg	1.7	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	pcg	1.5	break;
621	pcg	1.1	#endif
622	pcg	1.5
623	pcg	1.1	}
624			}
625			#endif
626			/----------------------- end-of-file (C source) -----------------------/