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++;
      else if (len > 0 
               && s[0] >= 0xc2 && s[0] <= 0xdf 
               && (s[1] & 0xc0) == 0x80)
        {
          *p++ = ((s[0] & 0x1f) << 6)
               |  (s[1] & 0x3f);
          s += 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;
        }
      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;
        }
      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:	1.19
Committed:	Sun Dec 12 06:30:25 2004 UTC (19 years, 6 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-4_4
Changes since 1.16:	+111 -2 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			while (len--)
112			{
113			if (s[0] < 0x80)
114			p++ = s++;
115			else if (len > 0
116			&& s[0] >= 0xc2 && s[0] <= 0xdf
117			&& (s[1] & 0xc0) == 0x80)
118			{
119			*p++ = ((s[0] & 0x1f) << 6)
120			\| (s[1] & 0x3f);
121			s += 2;
122			}
123			else if (len > 1
124			&& ( (s[0] == 0xe0 && s[1] >= 0xa0 && s[1] <= 0xbf)
125			\|\| (s[0] >= 0xe1 && s[0] <= 0xec && s[1] >= 0x80 && s[1] <= 0xbf)
126			\|\| (s[0] == 0xed && s[1] >= 0x80 && s[1] <= 0x9f)
127			\|\| (s[0] >= 0xee && s[0] <= 0xef && s[1] >= 0x80 && s[1] <= 0xbf)
128			)
129			&& (s[2] & 0xc0) == 0x80)
130			{
131			*p++ = ((s[0] & 0x0f) << 12)
132			\| ((s[1] & 0x3f) << 6)
133			\| (s[2] & 0x3f);
134			s += 3;
135			}
136			else if (len > 2
137			&& ( (s[0] == 0xf0 && s[1] >= 0x90 && s[1] <= 0xbf)
138			\|\| (s[0] >= 0xf1 && s[0] <= 0xf3 && s[1] >= 0x80 && s[1] <= 0xbf)
139			\|\| (s[0] == 0xf4 && s[1] >= 0x80 && s[1] <= 0x8f)
140			)
141			&& (s[2] & 0xc0) == 0x80
142			&& (s[3] & 0xc0) == 0x80)
143			{
144			*p++ = ((s[0] & 0x07) << 18)
145			\| ((s[1] & 0x3f) << 12)
146			\| ((s[2] & 0x3f) << 6)
147			\| (s[3] & 0x3f);
148			s += 4;
149			}
150			else
151			{
152			*p++ = 0xfffd;
153			s++;
154			}
155			}
156
157			*p = 0;
158
159			return r;
160			}
161
162	pcg	1.10	char *
163	pcg	1.3	rxvt_strdup (const char *str)
164			{
165			return str ? strdup (str) : 0;
166			}
167
168	root	1.15	/* INTPROTO */
169	pcg	1.8	char *
170	pcg	1.7	rxvt_r_basename (const char *str)
171	pcg	1.1	{
172	root	1.15	char *base = strrchr (str, '/');
173	pcg	1.1
174	pcg	1.7	return (char *) (base ? base + 1 : str);
175	pcg	1.1	}
176
177			/*
178			* Print an error message
179			*/
180	root	1.15	/* INTPROTO */
181	pcg	1.1	void
182	pcg	1.12	rxvt_vlog (const char *fmt, va_list arg_ptr)
183			{
184			char msg[1024];
185
186			vsnprintf (msg, sizeof msg, fmt, arg_ptr);
187
188			if (GET_R && GET_R->log_hook)
189			(*GET_R->log_hook) (msg);
190			else
191			write (STDOUT_FILENO, msg, strlen (msg));
192			}
193
194	root	1.15	/* INTPROTO */
195	pcg	1.12	void
196			rxvt_log (const char *fmt,...)
197	pcg	1.1	{
198	pcg	1.8	va_list arg_ptr;
199	pcg	1.1
200	pcg	1.7	va_start (arg_ptr, fmt);
201	pcg	1.12	rxvt_vlog (fmt, arg_ptr);
202	pcg	1.7	va_end (arg_ptr);
203	pcg	1.1	}
204
205			/*
206	pcg	1.12	* Print an error message
207			*/
208	root	1.15	/* INTPROTO */
209	pcg	1.12	void
210			rxvt_warn (const char *fmt,...)
211			{
212			va_list arg_ptr;
213
214			rxvt_log ("%s: ", RESNAME);
215
216			va_start (arg_ptr, fmt);
217			rxvt_vlog (fmt, arg_ptr);
218			va_end (arg_ptr);
219			}
220
221	root	1.15	/* INTPROTO */
222	pcg	1.12	void
223			rxvt_fatal (const char *fmt,...)
224			{
225			va_list arg_ptr;
226
227			rxvt_log ("%s: ", RESNAME);
228
229			va_start (arg_ptr, fmt);
230			rxvt_vlog (fmt, arg_ptr);
231			va_end (arg_ptr);
232
233			rxvt_exit_failure ();
234			}
235
236			class rxvt_failure_exception rxvt_failure_exception;
237
238	root	1.15	/* INTPROTO */
239	pcg	1.12	void
240			rxvt_exit_failure ()
241			{
242			throw (rxvt_failure_exception);
243			}
244
245			/*
246	pcg	1.1	* check that the first characters of S1 match S2
247			*
248			* No Match
249			* return: 0
250			* Match
251	root	1.15	* return: strlen (S2)
252	pcg	1.1	*/
253	root	1.15	/* INTPROTO */
254	pcg	1.1	int
255	pcg	1.7	rxvt_Str_match (const char s1, const char s2)
256	pcg	1.1	{
257	root	1.15	int n = strlen (s2);
258	pcg	1.1
259	root	1.15	return ((strncmp (s1, s2, n) == 0) ? n : 0);
260	pcg	1.1	}
261
262	root	1.15	/* INTPROTO */
263	pcg	1.8	const char *
264	pcg	1.7	rxvt_Str_skip_space (const char *str)
265	pcg	1.1	{
266	pcg	1.5	if (str)
267	pcg	1.7	while (str && isspace (str))
268	pcg	1.5	str++;
269	pcg	1.8
270	pcg	1.5	return str;
271	pcg	1.1	}
272
273			/*
274			* remove leading/trailing space and strip-off leading/trailing quotes.
275			* in place.
276			*/
277	root	1.15	/* INTPROTO */
278	pcg	1.1	char *
279	pcg	1.7	rxvt_Str_trim (char *str)
280	pcg	1.1	{
281	pcg	1.8	char r, s;
282			int n;
283	pcg	1.1
284	pcg	1.5	if (!str \|\| !str) / shortcut */
285			return str;
286	pcg	1.1
287	pcg	1.5	/* skip leading spaces */
288	pcg	1.7	for (s = str; s && isspace (s); s++) ;
289	pcg	1.5	/* goto end of string */
290			for (n = 0, r = s; *r++; n++) ;
291			r -= 2;
292			/* dump return */
293			if (n > 0 && *r == '\n')
294			n--, r--;
295			/* backtrack along trailing spaces */
296	pcg	1.7	for (; n > 0 && isspace (*r); r--, n--) ;
297	pcg	1.5	/* skip matching leading/trailing quotes */
298			if (s == '"' && r == '"' && n > 1)
299			{
300			s++;
301			n -= 2;
302	pcg	1.1	}
303	pcg	1.8
304	pcg	1.5	/* copy back over: forwards copy */
305			for (r = str; n; n--)
306			r++ = s++;
307			*r = '\0';
308	pcg	1.1
309	pcg	1.5	return str;
310	pcg	1.1	}
311
312			/*
313			* in-place interpretation of string:
314			*
315			* backslash-escaped: "\a\b\E\e\n\r\t", "\octal"
316			* Ctrl chars: ^@ .. ^_, ^?
317			*
318			* Emacs-style: "M-" prefix
319			*
320			* Also,
321			* "M-x" prefixed strings, append "\r" if needed
322			* "\E]" prefixed strings (XTerm escape sequence) append ST if needed
323			*
324			* returns the converted string length
325			*/
326	root	1.15	/* INTPROTO */
327	pcg	1.1	int
328	pcg	1.7	rxvt_Str_escaped (char *str)
329	pcg	1.1	{
330	pcg	1.5	char ch, s, d;
331			int i, num, append = 0;
332	pcg	1.1
333	pcg	1.5	if (!str \|\| !*str)
334			return 0;
335	pcg	1.1
336	pcg	1.5	d = s = str;
337	pcg	1.1
338	pcg	1.5	if (*s == 'M' && s[1] == '-')
339			{
340			/* Emacs convenience, replace leading `M-..' with `\E..' */
341			*d++ = C0_ESC;
342			s += 2;
343	pcg	1.7	if (toupper (*s) == 'X')
344	pcg	1.5	/* append carriage-return for `M-xcommand' */
345	pcg	1.7	for (d++ = 'x', append = '\r', s++; isspace (s); s++) ;
346	pcg	1.1	}
347	pcg	1.5	for (; (ch = *s++);)
348			{
349			if (ch == '\\')
350			{
351			ch = *s++;
352			if (ch >= '0' && ch <= '7')
353			{ /* octal */
354			num = ch - '0';
355			for (i = 0; i < 2; i++, s++)
356			{
357			ch = *s;
358			if (ch < '0' \|\| ch > '7')
359			break;
360			num = num * 8 + ch - '0';
361			}
362			ch = (char)num;
363			}
364			else if (ch == 'a')
365			ch = C0_BEL; /* bell */
366			else if (ch == 'b')
367			ch = C0_BS; /* backspace */
368			else if (ch == 'E' \|\| ch == 'e')
369			ch = C0_ESC; /* escape */
370			else if (ch == 'n')
371			ch = '\n'; /* newline */
372			else if (ch == 'r')
373			ch = '\r'; /* carriage-return */
374			else if (ch == 't')
375			ch = C0_HT; /* tab */
376			}
377			else if (ch == '^')
378			{
379			ch = *s++;
380	pcg	1.7	ch = toupper (ch);
381	pcg	1.5	ch = (ch == '?' ? 127 : (ch - '@'));
382			}
383			*d++ = ch;
384	pcg	1.1	}
385
386	pcg	1.5	/* ESC] is an XTerm escape sequence, must be terminated */
387			if (*str == '\0' && str[1] == C0_ESC && str[2] == ']')
388			append = CHAR_ST;
389
390			/* add trailing character as required */
391			if (append && d[-1] != append)
392			*d++ = append;
393			*d = '\0';
394	pcg	1.1
395	pcg	1.5	return (d - str);
396	pcg	1.1	}
397
398			/*
399			* Split a comma-separated string into an array, stripping leading and
400			* trailing spaces (and paired quotes) from each entry. Empty strings
401			* are properly returned
402			* Caller should free each entry and array when done
403			*/
404	root	1.15	/* INTPROTO */
405	pcg	1.1	char **
406	pcg	1.7	rxvt_splitcommastring (const char *cs)
407	pcg	1.1	{
408	pcg	1.5	int l, n, p;
409			const char s, t;
410			char **ret;
411
412			if ((s = cs) == NULL)
413			s = "";
414
415			for (n = 1, t = s; *t; t++)
416			if (*t == ',')
417			n++;
418	pcg	1.7	ret = (char *)malloc ((n + 1) sizeof (char *));
419	pcg	1.5	ret[n] = NULL;
420
421			for (l = 0, t = s; l < n; l++)
422			{
423			for ( ; t && t != ','; t++) ;
424			p = t - s;
425	pcg	1.7	ret[l] = (char *)malloc (p + 1);
426			strncpy (ret[l], s, p);
427	pcg	1.5	ret[l][p] = '\0';
428	pcg	1.7	rxvt_Str_trim (ret[l]);
429	pcg	1.5	s = ++t;
430	pcg	1.1	}
431	pcg	1.5	return ret;
432	pcg	1.1	}
433
434	root	1.16	void
435			rxvt_freecommastring (char **cs)
436			{
437			for (int i = 0; cs[i]; ++i)
438			free (cs[i]);
439
440			free (cs);
441			}
442
443	pcg	1.1	/----------------------------------------------------------------------
444			* file searching
445			*/
446
447			/* #define DEBUG_SEARCH_PATH */
448
449			#if defined (XPM_BACKGROUND) \|\| (MENUBAR_MAX)
450			/*
451			* search for FILE in the current working directory, and within the
452			* colon-delimited PATHLIST, adding the file extension EXT if required.
453			*
454			* FILE is either semi-colon or zero terminated
455			*/
456			/* INTPROTO */
457			char *
458	pcg	1.7	rxvt_File_search_path (const char pathlist, const char file, const char *ext)
459	pcg	1.1	{
460	pcg	1.5	int maxpath, len;
461			const char p, path;
462			char name[256];
463
464	pcg	1.7	if (!access (file, R_OK)) /* found (plain name) in current directory */
465	root	1.15	return strdup (file);
466	pcg	1.5
467			/* semi-colon delimited */
468	root	1.15	if ((p = strchr (file, ';')))
469	pcg	1.5	len = (p - file);
470			else
471	root	1.15	len = strlen (file);
472	pcg	1.1
473			#ifdef DEBUG_SEARCH_PATH
474	pcg	1.7	getcwd (name, sizeof (name));
475			fprintf (stderr, "pwd: \"%s\"\n", name);
476			fprintf (stderr, "find: \"%.*s\"\n", len, file);
477	pcg	1.1	#endif
478
479	pcg	1.5	/* leave room for an extra '/' and trailing '\0' */
480	root	1.15	maxpath = sizeof (name) - (len + (ext ? strlen (ext) : 0) + 2);
481	pcg	1.5	if (maxpath <= 0)
482			return NULL;
483
484			/* check if we can find it now */
485	root	1.15	strncpy (name, file, len);
486	pcg	1.5	name[len] = '\0';
487
488	pcg	1.7	if (!access (name, R_OK))
489	root	1.15	return strdup (name);
490	pcg	1.5	if (ext)
491			{
492	root	1.15	strcat (name, ext);
493	pcg	1.7	if (!access (name, R_OK))
494	root	1.15	return strdup (name);
495	pcg	1.1	}
496	pcg	1.5	for (path = pathlist; path != NULL && *path != '\0'; path = p)
497			{
498			int n;
499
500			/* colon delimited */
501	root	1.15	if ((p = strchr (path, ':')) == NULL)
502			p = strchr (path, '\0');
503	pcg	1.5
504			n = (p - path);
505			if (*p != '\0')
506			p++;
507
508			if (n > 0 && n <= maxpath)
509			{
510	root	1.15	strncpy (name, path, n);
511	pcg	1.5	if (name[n - 1] != '/')
512			name[n++] = '/';
513			name[n] = '\0';
514	root	1.15	strncat (name, file, len);
515	pcg	1.5
516	pcg	1.7	if (!access (name, R_OK))
517	root	1.15	return strdup (name);
518	pcg	1.5	if (ext)
519			{
520	root	1.15	strcat (name, ext);
521	pcg	1.7	if (!access (name, R_OK))
522	root	1.15	return strdup (name);
523	pcg	1.5	}
524			}
525	pcg	1.1	}
526	pcg	1.5	return NULL;
527	pcg	1.1	}
528
529	root	1.15	/* INTPROTO */
530	pcg	1.1	char *
531	pcg	1.7	rxvt_File_find (const char file, const char ext, const char *path)
532	pcg	1.1	{
533	pcg	1.5	char *f;
534	pcg	1.1
535	pcg	1.5	if (file == NULL \|\| *file == '\0')
536			return NULL;
537	pcg	1.1
538	pcg	1.5	/* search environment variables here too */
539	pcg	1.7	if ((f = rxvt_File_search_path (path, file, ext)) == NULL)
540	pcg	1.1	#ifdef PATH_ENV
541	pcg	1.7	if ((f = rxvt_File_search_path (getenv (PATH_ENV), file, ext)) == NULL)
542	pcg	1.1	#endif
543	pcg	1.7	f = rxvt_File_search_path (getenv ("PATH"), file, ext);
544	pcg	1.1
545			#ifdef DEBUG_SEARCH_PATH
546	pcg	1.5	if (f)
547	pcg	1.7	fprintf (stderr, "found: \"%s\"\n", f);
548	pcg	1.1	#endif
549
550	pcg	1.5	return f;
551	pcg	1.1	}
552			#endif /* defined (XPM_BACKGROUND) \|\| (MENUBAR_MAX) */
553
554			/----------------------------------------------------------------------
555			* miscellaneous drawing routines
556			*/
557
558			/*
559			* Draw top/left and bottom/right border shadows around windows
560			*/
561			#if defined(RXVT_SCROLLBAR) \|\| defined(MENUBAR)
562	root	1.15	/* INTPROTO */
563	pcg	1.1	void
564	pcg	1.7	rxvt_Draw_Shadow (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int h)
565	pcg	1.1	{
566	pcg	1.5	int shadow;
567	pcg	1.1
568	pcg	1.5	shadow = (w == 0 \|\| h == 0) ? 1 : SHADOW;
569			w += x - 1;
570			h += y - 1;
571			for (; shadow-- > 0; x++, y++, w--, h--)
572			{
573	pcg	1.7	XDrawLine (display, win, topShadow, x, y, w, y);
574			XDrawLine (display, win, topShadow, x, y, x, h);
575			XDrawLine (display, win, botShadow, w, h, w, y + 1);
576			XDrawLine (display, win, botShadow, w, h, x + 1, h);
577	pcg	1.1	}
578			}
579			#endif
580
581			/* button shapes */
582			#ifdef MENUBAR
583	root	1.15	/* INTPROTO */
584	pcg	1.1	void
585	pcg	1.7	rxvt_Draw_Triangle (Display *display, Window win, GC topShadow, GC botShadow, int x, int y, int w, int type)
586	pcg	1.1	{
587	pcg	1.5	switch (type)
588			{
589			case 'r': /* right triangle */
590	pcg	1.7	XDrawLine (display, win, topShadow, x, y, x, y + w);
591			XDrawLine (display, win, topShadow, x, y, x + w, y + w / 2);
592			XDrawLine (display, win, botShadow, x, y + w, x + w, y + w / 2);
593	pcg	1.5	break;
594
595			case 'l': /* left triangle */
596	pcg	1.7	XDrawLine (display, win, botShadow, x + w, y + w, x + w, y);
597			XDrawLine (display, win, botShadow, x + w, y + w, x, y + w / 2);
598			XDrawLine (display, win, topShadow, x, y + w / 2, x + w, y);
599	pcg	1.5	break;
600
601			case 'd': /* down triangle */
602	pcg	1.7	XDrawLine (display, win, topShadow, x, y, x + w / 2, y + w);
603			XDrawLine (display, win, topShadow, x, y, x + w, y);
604			XDrawLine (display, win, botShadow, x + w, y, x + w / 2, y + w);
605	pcg	1.5	break;
606
607			case 'u': /* up triangle */
608	pcg	1.7	XDrawLine (display, win, botShadow, x + w, y + w, x + w / 2, y);
609			XDrawLine (display, win, botShadow, x + w, y + w, x, y + w);
610			XDrawLine (display, win, topShadow, x, y + w, x + w / 2, y);
611	pcg	1.5	break;
612	pcg	1.1	#if 0
613	pcg	1.5	case 's': /* square */
614	pcg	1.7	XDrawLine (display, win, topShadow, x + w, y, x, y);
615			XDrawLine (display, win, topShadow, x, y, x, y + w);
616			XDrawLine (display, win, botShadow, x, y + w, x + w, y + w);
617			XDrawLine (display, win, botShadow, x + w, y + w, x + w, y);
618	pcg	1.5	break;
619	pcg	1.1	#endif
620	pcg	1.5
621	pcg	1.1	}
622			}
623			#endif
624			/----------------------- end-of-file (C source) -----------------------/