lib/Util.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2 // Util.cc for Blackbox - an X11 Window manager
   3 // Copyright (c) 2001 - 2005 Sean 'Shaleh' Perry <shaleh@debian.org>
   4 // Copyright (c) 1997 - 2000, 2002 - 2005
   5 //         Bradley T Hughes <bhughes at trolltech.com>
   6 //
   7 // Permission is hereby granted, free of charge, to any person obtaining a
   8 // copy of this software and associated documentation files (the "Software"),
   9 // to deal in the Software without restriction, including without limitation
  10 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11 // and/or sell copies of the Software, and to permit persons to whom the
  12 // Software is furnished to do so, subject to the following conditions:
  13 //
  14 // The above copyright notice and this permission notice shall be included in
  15 // all copies or substantial portions of the Software.
  16 //
  17 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23 // DEALINGS IN THE SOFTWARE.
  24
  25 // need to include these before Util.hh
  26 #include <X11/Xlib.h>
  27 #include <X11/Xutil.h>
  28
  29 #include "Util.hh"
  30
  31 #include <algorithm>
  32
  33 #include <X11/Xatom.h>
  34
  35 #include <assert.h>
  36 #if defined(__EMX__)
  37 #  include <process.h>
  38 #endif // __EMX__
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <unistd.h>
  42
  43
  44 std::string bt::basename(const std::string& path) {
  45   std::string::size_type slash = path.rfind('/');
  46   if (slash == std::string::npos)
  47     return path;
  48   return path.substr(slash+1);
  49 }
  50
  51
  52 std::string bt::expandTilde(const std::string& s) {
  53   if (s[0] != '~')
  54     return s;
  55   const char* const home = getenv("HOME");
  56   if (home == NULL)
  57     return s;
  58   return std::string(home + s.substr(s.find('/')));
  59 }
  60
  61
  62 void bt::bexec(const std::string& command, const std::string& displaystring) {
  63 #ifndef    __EMX__
  64   if (!fork()) {
  65 #ifndef __QNXTO__ // apparently, setsid interferes with signals on QNX
  66     setsid();
  67 #endif
  68     int ret = putenv(const_cast<char *>(displaystring.c_str()));
  69     assert(ret != -1);
  70     std::string cmd = "exec ";
  71     cmd += command;
  72     ret = execl("/bin/sh", "/bin/sh", "-c", cmd.c_str(), NULL);
  73     exit(ret);
  74   }
  75 #else //   __EMX__
  76   spawnlp(P_NOWAIT, "cmd.exe", "cmd.exe", "/c", command.c_str(), NULL);
  77 #endif // !__EMX__
  78 }
  79
  80
  81 std::string bt::itostring(unsigned long i) {
  82   if (i == 0)
  83     return std::string("0");
  84
  85   const char nums[] = "0123456789";
  86
  87   std::string tmp;
  88   for (; i > 0; i /= 10)
  89     tmp.insert(tmp.begin(), nums[i%10]);
  90   return tmp;
  91 }
  92
  93
  94 std::string bt::itostring(long i) {
  95   std::string tmp = bt::itostring(static_cast<unsigned long>(abs(i)));
  96   if (i < 0)
  97     tmp.insert(tmp.begin(), '-');
  98   return tmp;
  99 }
 100
 101
 102 std::string bt::textPropertyToString(::Display *display,
 103                                      ::XTextProperty& text_prop) {
 104   std::string ret;
 105
 106   if (text_prop.value && text_prop.nitems > 0) {
 107     if (text_prop.encoding == XA_STRING) {
 108       ret = reinterpret_cast<char *>(text_prop.value);
 109     } else {
 110       text_prop.nitems = strlen(reinterpret_cast<char *>(text_prop.value));
 111
 112       char **list;
 113       int num;
 114       if (XmbTextPropertyToTextList(display, &text_prop,
 115                                     &list, &num) == Success &&
 116           num > 0 && *list) {
 117         ret = *list;
 118         XFreeStringList(list);
 119       }
 120     }
 121   }
 122
 123   return ret;
 124 }