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/*****************************************************************************
* 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();
}
}
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