File indexing completed on 2024-04-28 05:46:51

 /*****************************************************************************
  *   Copyright 2012 - 2015 Yichao Yu <yyc1992@gmail.com>                     *
  *                                                                           *
  *   This program is free software; you can redistribute it and/or modify    *
  *   it under the terms of the GNU Lesser General Public License as          *
  *   published by the Free Software Foundation; either version 2.1 of the    *
  *   License, or (at your option) version 3, or any later version accepted   *
  *   by the membership of KDE e.V. (or its successor approved by the         *
  *   membership of KDE e.V.), which shall act as a proxy defined in          *
  *   Section 6 of version 3 of the license.                                  *
  *                                                                           *
  *   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       *
  *   Lesser General Public License for more details.                         *
  *                                                                           *
  *   You should have received a copy of the GNU Lesser General Public        *
  *   License along with this library. If not,                                *
  *   see <http://www.gnu.org/licenses/>.                                     *
  *****************************************************************************/
 
 #include "utils.h"
 #include "strs.h"
 
 #include <config.h>
 
 #include <dlfcn.h>
 
 namespace QtCurve {
 
 QTC_EXPORT const char*
 getProgName()
 {
     static uniqueStr name = [] {
         void *hdl = dlopen(nullptr, RTLD_NOW);
         // I do not use the procfs here since any system that has procfs
         // (Linux) should support one of these variables/functions.
         if (!hdl) {
             return strdup("");
         }
         void *progname_p = nullptr;
         const char *name = nullptr;
         if ((progname_p = dlsym(hdl, "program_invocation_short_name")) ||
             (progname_p = dlsym(hdl, "program_invocation_name")) ||
             (progname_p = dlsym(hdl, "__progname"))) {
             name = *(char *const*)progname_p;
         } else if ((progname_p = dlsym(hdl, "getprogname"))) {
             name = ((const char *(*)())progname_p)();
         }
         if (!name) {
             return strdup("");
         }
         const char *sub_name;
         if ((sub_name = strrchr(name, '/')) && sub_name[1]) {
             return strdup(sub_name + 1);
         }
         return strdup(name);
     };
     return name.get();
 }
 
 }