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/*----------------------------------------------------------------------* |
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* File: misc.C |
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*----------------------------------------------------------------------* |
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* |
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* All portions of code are copyright by their respective author/s. |
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* Copyright (c) 1996 mj olesen <olesen@me.QueensU.CA> Queen's Univ at Kingston |
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* Copyright (c) 1997,1998 Oezguer Kesim <kesim@math.fu-berlin.de> |
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* Copyright (c) 1998-2000 Geoff Wing <gcw@pobox.com> |
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* Copyright (c) 2003-2006 Marc Lehmann <schmorp@schmorp.de> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*----------------------------------------------------------------------*/ |
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|
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#include "../config.h" /* NECESSARY */ |
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#include "rxvt.h" /* NECESSARY */ |
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|
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#include <new> |
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|
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// alas new/delete cannot be specified as inline in C++11 (see 17.6.4.6) |
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void * |
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operator new (size_t s) |
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{ |
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return rxvt_malloc (s); |
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} |
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|
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void |
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operator delete (void *p) noexcept |
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{ |
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free (p); |
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} |
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|
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char * |
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rxvt_wcstombs (const wchar_t *str, int len) |
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{ |
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if (len < 0) len = wcslen (str); |
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|
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mbstate mbs; |
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char *r = (char *)rxvt_malloc (len * MB_CUR_MAX + 1); |
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|
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char *dst = r; |
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while (len--) |
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{ |
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ssize_t l = wcrtomb (dst, *str++, mbs); |
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|
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if (l < 0) |
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{ |
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*dst++ = '?'; |
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wcrtomb (0, 0, mbs); // reset undefined state |
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} |
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else |
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dst += l; |
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} |
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|
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*dst++ = 0; |
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|
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return (char *)rxvt_realloc (r, dst - r); |
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} |
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|
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wchar_t * |
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rxvt_mbstowcs (const char *str, int len) |
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{ |
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if (len < 0) len = strlen (str); |
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|
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wchar_t *r = (wchar_t *)rxvt_malloc ((len + 1) * sizeof (wchar_t)); |
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|
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if ((ssize_t)mbstowcs (r, str, len + 1) < 0) |
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*r = 0; |
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|
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return r; |
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} |
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|
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char * |
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rxvt_wcstoutf8 (const wchar_t *str, int len) |
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{ |
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if (len < 0) len = wcslen (str); |
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|
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char *r = (char *)rxvt_malloc (len * 4 + 1); |
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char *p = r; |
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|
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while (len--) |
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{ |
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unicode_t w = *str++ & UNICODE_MASK; |
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|
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if (w < 0x000080) |
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*p++ = w; |
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else if (w < 0x000800) |
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*p++ = 0xc0 | ( w >> 6), |
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*p++ = 0x80 | ( w & 0x3f); |
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else if (w < 0x010000) |
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*p++ = 0xe0 | ( w >> 12), |
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*p++ = 0x80 | ((w >> 6) & 0x3f), |
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*p++ = 0x80 | ( w & 0x3f); |
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else if (w < 0x110000) |
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*p++ = 0xf0 | ( w >> 18), |
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*p++ = 0x80 | ((w >> 12) & 0x3f), |
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*p++ = 0x80 | ((w >> 6) & 0x3f), |
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*p++ = 0x80 | ( w & 0x3f); |
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else |
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*p++ = '?'; |
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} |
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|
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*p++ = 0; |
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|
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return (char *)rxvt_realloc (r, p - r); |
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} |
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|
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wchar_t * |
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rxvt_utf8towcs (const char *str, int len) |
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{ |
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if (len < 0) len = strlen (str); |
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|
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wchar_t *r = (wchar_t *)rxvt_malloc ((len + 1) * sizeof (wchar_t)), |
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*p = r; |
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|
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unsigned char *s = (unsigned char *)str, |
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*e = s + len; |
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|
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for (;;) |
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{ |
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len = e - s; |
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|
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if (len == 0) |
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break; |
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else if (s[0] < 0x80) |
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*p++ = *s++; |
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else if (len >= 2 |
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&& s[0] >= 0xc2 && s[0] <= 0xdf |
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&& (s[1] & 0xc0) == 0x80) |
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{ |
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*p++ = ((s[0] & 0x1f) << 6) |
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| (s[1] & 0x3f); |
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s += 2; |
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} |
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else if (len >= 3 |
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&& ( (s[0] == 0xe0 && s[1] >= 0xa0 && s[1] <= 0xbf) |
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|| (s[0] >= 0xe1 && s[0] <= 0xec && s[1] >= 0x80 && s[1] <= 0xbf) |
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|| (s[0] == 0xed && s[1] >= 0x80 && s[1] <= 0x9f) |
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|| (s[0] >= 0xee && s[0] <= 0xef && s[1] >= 0x80 && s[1] <= 0xbf) |
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) |
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&& (s[2] & 0xc0) == 0x80) |
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{ |
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*p++ = ((s[0] & 0x0f) << 12) |
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| ((s[1] & 0x3f) << 6) |
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| (s[2] & 0x3f); |
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s += 3; |
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} |
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else if (len >= 4 |
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&& ( (s[0] == 0xf0 && s[1] >= 0x90 && s[1] <= 0xbf) |
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|| (s[0] >= 0xf1 && s[0] <= 0xf3 && s[1] >= 0x80 && s[1] <= 0xbf) |
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|| (s[0] == 0xf4 && s[1] >= 0x80 && s[1] <= 0x8f) |
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) |
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&& (s[2] & 0xc0) == 0x80 |
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&& (s[3] & 0xc0) == 0x80) |
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{ |
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*p++ = ((s[0] & 0x07) << 18) |
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| ((s[1] & 0x3f) << 12) |
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| ((s[2] & 0x3f) << 6) |
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| (s[3] & 0x3f); |
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s += 4; |
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} |
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else |
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{ |
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*p++ = 0xfffd; |
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s++; |
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} |
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} |
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|
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*p = 0; |
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|
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return r; |
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} |
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|
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const char * |
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rxvt_basename (const char *str) noexcept |
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{ |
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const char *base = strrchr (str, '/'); |
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|
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return base ? base + 1 : str; |
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} |
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|
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/* |
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* Print an error message |
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*/ |
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void |
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rxvt_vlog (const char *fmt, va_list arg_ptr) noexcept |
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{ |
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char msg[1024]; |
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|
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vsnprintf (msg, sizeof msg, fmt, arg_ptr); |
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|
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if (GET_R && GET_R->log_hook) |
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(*GET_R->log_hook) (msg); |
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else |
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write (STDOUT_FILENO, msg, strlen (msg)); |
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} |
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|
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void |
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rxvt_log (const char *fmt,...) noexcept |
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{ |
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va_list arg_ptr; |
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|
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va_start (arg_ptr, fmt); |
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rxvt_vlog (fmt, arg_ptr); |
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va_end (arg_ptr); |
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} |
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|
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/* |
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* Print an error message |
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*/ |
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void |
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rxvt_warn (const char *fmt,...) noexcept |
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{ |
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va_list arg_ptr; |
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|
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rxvt_log ("%s: ", RESNAME); |
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|
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va_start (arg_ptr, fmt); |
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rxvt_vlog (fmt, arg_ptr); |
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va_end (arg_ptr); |
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} |
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|
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void |
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rxvt_fatal (const char *fmt,...) |
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{ |
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va_list arg_ptr; |
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|
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rxvt_log ("%s: ", RESNAME); |
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|
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va_start (arg_ptr, fmt); |
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rxvt_vlog (fmt, arg_ptr); |
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va_end (arg_ptr); |
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|
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rxvt_exit_failure (); |
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} |
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|
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void |
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rxvt_exit_failure () |
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{ |
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static class rxvt_failure_exception rxvt_failure_exception; |
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throw (rxvt_failure_exception); |
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} |
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|
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/* |
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* remove leading/trailing space in place. |
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*/ |
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char * |
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rxvt_strtrim (char *str) noexcept |
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{ |
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char *r, *s; |
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|
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if (!str || !*str) /* shortcut */ |
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return str; |
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|
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/* skip leading spaces */ |
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for (s = str; *s && isspace (*s); s++) ; |
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|
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/* goto end of string */ |
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r = s + strlen (s) - 1; |
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|
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/* dump return and other trailing whitespace */ |
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while (r > s && isspace (*r)) |
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r--; |
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|
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memmove (str, s, r + 1 - s); |
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str[r + 1 - s] = 0; |
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|
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return str; |
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} |
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|
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/* |
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* Split a string into an array based on the given delimiter, stripping leading and |
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* trailing spaces from each entry. Empty strings are properly returned |
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*/ |
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char ** |
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rxvt_strsplit (char delim, const char *str) noexcept |
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{ |
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int l, n; |
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char *s, *t; |
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char **ret; |
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|
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s = strdup (str ? str : ""); |
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|
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for (n = 1, t = s; *t; t++) |
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if (*t == delim) |
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n++; |
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|
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ret = (char **)malloc ((n + 1) * sizeof (char *)); |
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ret[n] = NULL; |
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|
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for (l = 0, t = s; l < n; l++) |
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{ |
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for (; *t && *t != delim; t++) |
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; |
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*t = '\0'; |
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ret[l] = s; |
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rxvt_strtrim (ret[l]); |
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s = ++t; |
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} |
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|
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return ret; |
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} |
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|
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void * |
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rxvt_malloc (size_t size) |
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{ |
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void *p = malloc (size); |
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|
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if (!p) |
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rxvt_fatal ("memory allocation failure. aborting.\n"); |
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|
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return p; |
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} |
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|
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void * |
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rxvt_calloc (size_t number, size_t size) |
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{ |
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void *p = calloc (number, size); |
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|
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if (!p) |
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rxvt_fatal ("memory allocation failure. aborting.\n"); |
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|
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return p; |
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} |
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|
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void * |
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rxvt_realloc (void *ptr, size_t size) |
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{ |
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void *p = realloc (ptr, size); |
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|
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if (!p) |
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rxvt_fatal ("memory allocation failure. aborting.\n"); |
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|
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return p; |
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} |
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|
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KeySym |
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rxvt_XKeycodeToKeysym (Display *dpy, KeyCode code, int index) |
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{ |
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int size; |
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KeySym *mapping = XGetKeyboardMapping (dpy, code, 1, &size); |
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KeySym keysym = IN_RANGE_EXC (index, 0, size) ? mapping[index] : NoSymbol; |
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XFree (mapping); |
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return keysym; |
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} |