Panel
/* $Id$ */
/* Copyright (c) 2013-2015 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Panel */
/* 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, 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <dirent.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <dlfcn.h>
#include "Panel/applet.h"
#define PROGNAME "applets"
/* private */
/* prototypes */
static int _applets(void);
static int _dlerror(char const * message, int ret);
static int _error(char const * message, char const * error, int ret);
static int _perror(char const * message, int ret);
/* functions */
/* applets */
static int _applets(void)
{
int ret = 0;
const char path[] = "../src/applets";
#ifdef __APPLE__
const char ext[] = ".dylib";
#else
const char ext[] = ".so";
#endif
DIR * dir;
struct dirent * de;
size_t len;
char * s;
void * p;
PanelAppletDefinition * pad;
if((dir = opendir(path)) == NULL)
return -_perror(path, 1);
while((de = readdir(dir)) != NULL)
{
if((len = strlen(de->d_name)) < sizeof(ext))
continue;
if(strcmp(&de->d_name[len - sizeof(ext) + 1], ext) != 0)
continue;
if((s = malloc(sizeof(path) + len + 1)) == NULL)
{
ret += _perror(de->d_name, 1);
continue;
}
snprintf(s, sizeof(path) + len + 1, "%s/%s", path, de->d_name);
if((p = dlopen(s, RTLD_LAZY)) == NULL)
{
ret += _dlerror(s, 1);
free(s);
continue;
}
if((pad = dlsym(p, "applet")) == NULL)
ret += _dlerror(s, 1);
else if(pad->icon == NULL)
ret += _error(s, "No icon defined", 1);
else
printf("\n%s: %s (%s)\n%s\n", de->d_name, pad->name,
pad->icon, (pad->description != NULL)
? pad->description
: "(no description)");
free(s);
dlclose(p);
}
closedir(dir);
return ret;
}
/* dlerror */
static int _dlerror(char const * message, int ret)
{
fputs(PROGNAME ": ", stderr);
fprintf(stderr, "%s: %s\n", message, dlerror());
return ret;
}
/* error */
static int _error(char const * message, char const * error, int ret)
{
fputs(PROGNAME ": ", stderr);
fprintf(stderr, "%s: %s\n", message, error);
return ret;
}
/* perror */
static int _perror(char const * message, int ret)
{
fputs(PROGNAME ": ", stderr);
perror(message);
return ret;
}
/* public */
/* functions */
/* main */
int main(void)
{
return (_applets() == 0) ? 0 : 2;
}