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add modinfo support

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@191 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2004-09-11 23:17:38 +00:00
parent 11f0aae5d6
commit a9ca9c4a3b
21 changed files with 390 additions and 57 deletions
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84
polyp/modinfo.c Normal file
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/* $Id$ */
/***
This file is part of polypaudio.
polypaudio 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; either version 2 of the License,
or (at your option) any later version.
polypaudio 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 polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <ltdl.h>
#include <assert.h>
#include "xmalloc.h"
#include "util.h"
#include "modinfo.h"
#include "log.h"
#define PA_SYMBOL_AUTHOR "pa__get_author"
#define PA_SYMBOL_DESCRIPTION "pa__get_description"
#define PA_SYMBOL_USAGE "pa__get_usage"
#define PA_SYMBOL_VERSION "pa__get_version"
struct pa_modinfo *pa_modinfo_get_by_handle(lt_dlhandle dl) {
struct pa_modinfo *i;
const char* (*func)(void);
assert(dl);
i = pa_xmalloc0(sizeof(struct pa_modinfo));
if ((func = (const char* (*)(void)) lt_dlsym(dl, PA_SYMBOL_AUTHOR)))
i->author = pa_xstrdup(func());
if ((func = (const char* (*)(void)) lt_dlsym(dl, PA_SYMBOL_DESCRIPTION)))
i->description = pa_xstrdup(func());
if ((func = (const char* (*)(void)) lt_dlsym(dl, PA_SYMBOL_USAGE)))
i->usage = pa_xstrdup(func());
if ((func = (const char* (*)(void)) lt_dlsym(dl, PA_SYMBOL_VERSION)))
i->version = pa_xstrdup(func());
return i;
}
struct pa_modinfo *pa_modinfo_get_by_name(const char *name) {
lt_dlhandle dl;
struct pa_modinfo *i;
assert(name);
if (!(dl = lt_dlopenext(name))) {
pa_log(__FILE__": Failed to open module \"%s\": %s\n", name, lt_dlerror());
return NULL;
}
i = pa_modinfo_get_by_handle(dl);
lt_dlclose(dl);
return i;
}
void pa_modinfo_free(struct pa_modinfo *i) {
assert(i);
pa_xfree(i->author);
pa_xfree(i->description);
pa_xfree(i->usage);
pa_xfree(i->version);
pa_xfree(i);
}