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--)
    {
      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:	1.25
Committed:	Mon Feb 7 01:17:03 2005 UTC (19 years, 3 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-5_1, rel-5_0
Changes since 1.24:	+14 -14 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	root	1.24	ssize_t l = wcrtomb (dst, *str++, mbs);
42	pcg	1.10	if (l < 0)
43			*dst++ = '?';
44			else
45			dst += l;
46			}
47
48			*dst++ = 0;
49
50	root	1.24	return (char *)rxvt_realloc (r, dst - r);
51	pcg	1.10	}
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	root	1.24	if ((ssize_t)mbstowcs (r, str, len + 1) < 0)
61	root	1.19	*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	root	1.22	unicode_t w = *str++ & UNICODE_MASK;
77	root	1.19
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	root	1.24	*p++ = 0;
97	root	1.19
98	root	1.24	return (char *)rxvt_realloc (r, p - r);
99	root	1.19	}
100
101			wchar_t *
102			rxvt_utf8towcs (const char *str, int len)
103			{
104			if (len < 0) len = strlen (str);
105
106	root	1.21	wchar_t r = (wchar_t )rxvt_malloc ((len + 1) * sizeof (wchar_t)),
107			*p = r;
108	root	1.19
109	root	1.21	unsigned char s = (unsigned char )str,
110			*e = s + len;
111	root	1.19
112	root	1.21	for (;;)
113	root	1.19	{
114	root	1.21	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	root	1.19	&& s[0] >= 0xc2 && s[0] <= 0xdf
122			&& (s[1] & 0xc0) == 0x80)
123			{
124			*p++ = ((s[0] & 0x1f) << 6)
125			\| (s[1] & 0x3f);
126	root	1.21	s += 2;
127	root	1.19	}
128	root	1.21	else if (len >= 3
129	root	1.19	&& ( (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	root	1.21	s += 3;
140	root	1.19	}
141	root	1.21	else if (len >= 4
142	root	1.19	&& ( (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	root	1.21	s += 4;
154	root	1.19	}
155			else
156			{
157			*p++ = 0xfffd;
158	root	1.21	s++;
159	root	1.19	}
160			}
161
162			*p = 0;
163
164			return r;
165			}
166
167	pcg	1.10	char *
168	pcg	1.3	rxvt_strdup (const char *str)
169			{
170			return str ? strdup (str) : 0;
171			}
172
173	root	1.15	/* INTPROTO */
174	pcg	1.8	char *
175	pcg	1.7	rxvt_r_basename (const char *str)
176	pcg	1.1	{
177	root	1.15	char *base = strrchr (str, '/');
178	pcg	1.1
179	pcg	1.7	return (char *) (base ? base + 1 : str);
180	pcg	1.1	}
181
182			/*
183			* Print an error message
184			*/
185	root	1.15	/* INTPROTO */
186	pcg	1.1	void
187	pcg	1.12	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	root	1.15	/* INTPROTO */
200	pcg	1.12	void
201			rxvt_log (const char *fmt,...)
202	pcg	1.1	{
203	pcg	1.8	va_list arg_ptr;
204	pcg	1.1
205	pcg	1.7	va_start (arg_ptr, fmt);
206	pcg	1.12	rxvt_vlog (fmt, arg_ptr);
207	pcg	1.7	va_end (arg_ptr);
208	pcg	1.1	}
209
210			/*
211	pcg	1.12	* Print an error message
212			*/
213	root	1.15	/* INTPROTO */
214	pcg	1.12	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	root	1.15	/* INTPROTO */
227	pcg	1.12	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	root	1.15	/* INTPROTO */
244	pcg	1.12	void
245			rxvt_exit_failure ()
246			{
247			throw (rxvt_failure_exception);
248			}
249
250			/*
251	pcg	1.1	* check that the first characters of S1 match S2
252			*
253			* No Match
254			* return: 0
255			* Match
256	root	1.15	* return: strlen (S2)
257	pcg	1.1	*/
258	root	1.15	/* INTPROTO */
259	pcg	1.1	int
260	pcg	1.7	rxvt_Str_match (const char s1, const char s2)
261	pcg	1.1	{
262	root	1.15	int n = strlen (s2);
263	pcg	1.1
264	root	1.15	return ((strncmp (s1, s2, n) == 0) ? n : 0);
265	pcg	1.1	}
266
267	root	1.15	/* INTPROTO */
268	pcg	1.8	const char *
269	pcg	1.7	rxvt_Str_skip_space (const char *str)
270	pcg	1.1	{
271	pcg	1.5	if (str)
272	pcg	1.7	while (str && isspace (str))
273	pcg	1.5	str++;
274	pcg	1.8
275	pcg	1.5	return str;
276	pcg	1.1	}
277
278			/*
279			* remove leading/trailing space and strip-off leading/trailing quotes.
280			* in place.
281			*/
282	root	1.15	/* INTPROTO */
283	pcg	1.1	char *
284	pcg	1.7	rxvt_Str_trim (char *str)
285	pcg	1.1	{
286	pcg	1.8	char r, s;
287	pcg	1.1
288	pcg	1.5	if (!str \|\| !str) / shortcut */
289			return str;
290	pcg	1.1
291	pcg	1.5	/* skip leading spaces */
292	pcg	1.7	for (s = str; s && isspace (s); s++) ;
293	root	1.25
294	pcg	1.5	/* goto end of string */
295	root	1.25	r = s + strlen (s) - 1;
296
297			/* dump return and other trailing whitespace */
298			while (r > s && isspace (*r))
299			r--;
300
301			#if 0
302	pcg	1.5	/* skip matching leading/trailing quotes */
303			if (s == '"' && r == '"' && n > 1)
304			{
305			s++;
306			n -= 2;
307	pcg	1.1	}
308	root	1.25	#endif
309	pcg	1.8
310	root	1.25	memmove (str, s, r + 1 - s);
311			str[r + 1 - s] = 0;
312	pcg	1.1
313	pcg	1.5	return str;
314	pcg	1.1	}
315
316			/*
317			* in-place interpretation of string:
318			*
319			* backslash-escaped: "\a\b\E\e\n\r\t", "\octal"
320			* Ctrl chars: ^@ .. ^_, ^?
321			*
322			* Emacs-style: "M-" prefix
323			*
324			* Also,
325			* "M-x" prefixed strings, append "\r" if needed
326			* "\E]" prefixed strings (XTerm escape sequence) append ST if needed
327			*
328			* returns the converted string length
329			*/
330	root	1.15	/* INTPROTO */
331	pcg	1.1	int
332	pcg	1.7	rxvt_Str_escaped (char *str)
333	pcg	1.1	{
334	pcg	1.5	char ch, s, d;
335			int i, num, append = 0;
336	pcg	1.1
337	pcg	1.5	if (!str \|\| !*str)
338			return 0;
339	pcg	1.1
340	pcg	1.5	d = s = str;
341	pcg	1.1
342	pcg	1.5	if (*s == 'M' && s[1] == '-')
343			{
344			/* Emacs convenience, replace leading `M-..' with `\E..' */
345			*d++ = C0_ESC;
346			s += 2;
347	pcg	1.7	if (toupper (*s) == 'X')
348	pcg	1.5	/* append carriage-return for `M-xcommand' */
349	pcg	1.7	for (d++ = 'x', append = '\r', s++; isspace (s); s++) ;
350	pcg	1.1	}
351	pcg	1.5	for (; (ch = *s++);)
352			{
353			if (ch == '\\')
354			{
355			ch = *s++;
356			if (ch >= '0' && ch <= '7')
357			{ /* octal */
358			num = ch - '0';
359			for (i = 0; i < 2; i++, s++)
360			{
361			ch = *s;
362			if (ch < '0' \|\| ch > '7')
363			break;
364			num = num * 8 + ch - '0';
365			}
366			ch = (char)num;
367			}
368			else if (ch == 'a')
369			ch = C0_BEL; /* bell */
370			else if (ch == 'b')
371			ch = C0_BS; /* backspace */
372			else if (ch == 'E' \|\| ch == 'e')
373			ch = C0_ESC; /* escape */
374			else if (ch == 'n')
375			ch = '\n'; /* newline */
376			else if (ch == 'r')
377			ch = '\r'; /* carriage-return */
378			else if (ch == 't')
379			ch = C0_HT; /* tab */
380			}
381			else if (ch == '^')
382			{
383			ch = *s++;
384	pcg	1.7	ch = toupper (ch);
385	pcg	1.5	ch = (ch == '?' ? 127 : (ch - '@'));
386			}
387			*d++ = ch;
388	pcg	1.1	}
389
390	pcg	1.5	/* ESC] is an XTerm escape sequence, must be terminated */
391			if (*str == '\0' && str[1] == C0_ESC && str[2] == ']')
392			append = CHAR_ST;
393
394			/* add trailing character as required */
395			if (append && d[-1] != append)
396			*d++ = append;
397			*d = '\0';
398	pcg	1.1
399	pcg	1.5	return (d - str);
400	pcg	1.1	}
401
402			/*
403			* Split a comma-separated string into an array, stripping leading and
404	root	1.25	* trailing spaces from each entry. Empty strings are properly returned
405	pcg	1.1	* Caller should free each entry and array when done
406			*/
407	root	1.15	/* INTPROTO */
408	pcg	1.1	char **
409	pcg	1.7	rxvt_splitcommastring (const char *cs)
410	pcg	1.1	{
411	pcg	1.5	int l, n, p;
412			const char s, t;
413			char **ret;
414
415			if ((s = cs) == NULL)
416			s = "";
417
418			for (n = 1, t = s; *t; t++)
419			if (*t == ',')
420			n++;
421	root	1.25
422	pcg	1.7	ret = (char *)malloc ((n + 1) sizeof (char *));
423	pcg	1.5	ret[n] = NULL;
424
425			for (l = 0, t = s; l < n; l++)
426			{
427			for ( ; t && t != ','; t++) ;
428			p = t - s;
429	pcg	1.7	ret[l] = (char *)malloc (p + 1);
430			strncpy (ret[l], s, p);
431	pcg	1.5	ret[l][p] = '\0';
432	pcg	1.7	rxvt_Str_trim (ret[l]);
433	pcg	1.5	s = ++t;
434	pcg	1.1	}
435	root	1.25
436	pcg	1.5	return ret;
437	pcg	1.1	}
438
439	root	1.16	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	pcg	1.1	/----------------------------------------------------------------------
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	pcg	1.7	rxvt_File_search_path (const char pathlist, const char file, const char *ext)
464	pcg	1.1	{
465	pcg	1.5	int maxpath, len;
466			const char p, path;
467			char name[256];
468
469	pcg	1.7	if (!access (file, R_OK)) /* found (plain name) in current directory */
470	root	1.15	return strdup (file);
471	pcg	1.5
472			/* semi-colon delimited */
473	root	1.15	if ((p = strchr (file, ';')))
474	pcg	1.5	len = (p - file);
475			else
476	root	1.15	len = strlen (file);
477	pcg	1.1
478			#ifdef DEBUG_SEARCH_PATH
479	pcg	1.7	getcwd (name, sizeof (name));
480			fprintf (stderr, "pwd: \"%s\"\n", name);
481			fprintf (stderr, "find: \"%.*s\"\n", len, file);
482	pcg	1.1	#endif
483
484	pcg	1.5	/* leave room for an extra '/' and trailing '\0' */
485	root	1.15	maxpath = sizeof (name) - (len + (ext ? strlen (ext) : 0) + 2);
486	pcg	1.5	if (maxpath <= 0)
487			return NULL;
488
489			/* check if we can find it now */
490	root	1.15	strncpy (name, file, len);
491	pcg	1.5	name[len] = '\0';
492
493	pcg	1.7	if (!access (name, R_OK))
494	root	1.15	return strdup (name);
495	pcg	1.5	if (ext)
496			{
497	root	1.15	strcat (name, ext);
498	pcg	1.7	if (!access (name, R_OK))
499	root	1.15	return strdup (name);
500	pcg	1.1	}
501	pcg	1.5	for (path = pathlist; path != NULL && *path != '\0'; path = p)
502			{
503			int n;
504
505			/* colon delimited */
506	root	1.15	if ((p = strchr (path, ':')) == NULL)
507			p = strchr (path, '\0');
508	pcg	1.5
509			n = (p - path);
510			if (*p != '\0')
511			p++;
512
513			if (n > 0 && n <= maxpath)
514			{
515	root	1.15	strncpy (name, path, n);
516	pcg	1.5	if (name[n - 1] != '/')
517			name[n++] = '/';
518			name[n] = '\0';
519	root	1.15	strncat (name, file, len);
520	pcg	1.5
521	pcg	1.7	if (!access (name, R_OK))
522	root	1.15	return strdup (name);
523	pcg	1.5	if (ext)
524			{
525	root	1.15	strcat (name, ext);
526	pcg	1.7	if (!access (name, R_OK))
527	root	1.15	return strdup (name);
528	pcg	1.5	}
529			}
530	pcg	1.1	}
531	pcg	1.5	return NULL;
532	pcg	1.1	}
533
534	root	1.15	/* INTPROTO */
535	pcg	1.1	char *
536	pcg	1.7	rxvt_File_find (const char file, const char ext, const char *path)
537	pcg	1.1	{
538	pcg	1.5	char *f;
539	pcg	1.1
540	pcg	1.5	if (file == NULL \|\| *file == '\0')
541			return NULL;
542	pcg	1.1
543	pcg	1.5	/* search environment variables here too */
544	pcg	1.7	if ((f = rxvt_File_search_path (path, file, ext)) == NULL)
545	pcg	1.1	#ifdef PATH_ENV
546	pcg	1.7	if ((f = rxvt_File_search_path (getenv (PATH_ENV), file, ext)) == NULL)
547	pcg	1.1	#endif
548	pcg	1.7	f = rxvt_File_search_path (getenv ("PATH"), file, ext);
549	pcg	1.1
550			#ifdef DEBUG_SEARCH_PATH
551	pcg	1.5	if (f)
552	pcg	1.7	fprintf (stderr, "found: \"%s\"\n", f);
553	pcg	1.1	#endif
554
555	pcg	1.5	return f;
556	pcg	1.1	}
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	root	1.15	/* INTPROTO */
568	pcg	1.1	void
569	pcg	1.7	rxvt_Draw_Shadow (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int h)
570	pcg	1.1	{
571	pcg	1.5	int shadow;
572	pcg	1.1
573	pcg	1.5	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	pcg	1.7	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	pcg	1.1	}
583			}
584			#endif
585
586			/* button shapes */
587			#ifdef MENUBAR
588	root	1.15	/* INTPROTO */
589	pcg	1.1	void
590	pcg	1.7	rxvt_Draw_Triangle (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int type)
591	pcg	1.1	{
592	pcg	1.5	switch (type)
593			{
594			case 'r': /* right triangle */
595	pcg	1.7	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	pcg	1.5	break;
599
600			case 'l': /* left triangle */
601	pcg	1.7	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	pcg	1.5	break;
605
606			case 'd': /* down triangle */
607	pcg	1.7	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	pcg	1.5	break;
611
612			case 'u': /* up triangle */
613	pcg	1.7	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	pcg	1.5	break;
617	pcg	1.1	#if 0
618	pcg	1.5	case 's': /* square */
619	pcg	1.7	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	pcg	1.5	break;
624	pcg	1.1	#endif
625	pcg	1.5
626	pcg	1.1	}
627			}
628			#endif
629			/----------------------- end-of-file (C source) -----------------------/