gplugin/gplugin

Add option in meson to install helper application

2020-10-12, Sorvival
90d067db1688
Add option in meson to install helper application

Added two new options in meson that allow choosing whether the helper applications (gplugin-gtk-viewer and gplugin-query) are going to be installed or not

Testing Done:
Compiled a few times switching the two new options between true and false and verifying that the behavior was correct.

Bugs closed: GPLUGIN-129

Reviewed at https://reviews.imfreedom.org/r/159/
/*
* Copyright (C) 2011-2020 Gary Kramlich <grim@reaperworld.com>
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 <https://www.gnu.org/licenses/>.
*/
#include "gplugin-perl5-loader.h"
#include "gplugin-perl5-plugin.h"
#include <gperl.h>
struct _GPluginPerlLoader {
GPluginLoader parent;
};
G_DEFINE_DYNAMIC_TYPE(
GPluginPerlLoader,
gplugin_perl_loader,
GPLUGIN_TYPE_LOADER);
static PerlInterpreter *my_perl = NULL;
/******************************************************************************
* Perl Stuff
*****************************************************************************/
extern void boot_DynaLoader(pTHX_ CV *cv);
static void gplugin_perl_loader_xs_init(pTHX)
{
dXSUB_SYS;
newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, __FILE__);
}
static void
gplugin_perl_loader_init_perl(void)
{
gchar *args[] = {
"",
};
gchar **argv = (gchar **)args;
gint argc = 1;
PERL_SYS_INIT(&argc, &argv);
my_perl = perl_alloc();
PERL_SET_CONTEXT(my_perl);
PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
perl_construct(my_perl);
}
static void
gplugin_perl_loader_uninit_perl(void)
{
PERL_SET_CONTEXT(my_perl);
perl_destruct(my_perl);
perl_free(my_perl);
PERL_SYS_TERM();
}
static GPluginPluginInfo *
gplugin_perl_loader_call_gplugin_query(
PerlInterpreter *interpreter,
GError **error)
{
GPluginPluginInfo *info = NULL;
PerlInterpreter *old = NULL;
gint ret = 0;
dSP;
old = my_perl;
my_perl = interpreter;
PERL_SET_CONTEXT(interpreter);
ENTER;
SAVETMPS;
PUSHMARK(SP);
PUTBACK;
ret = call_pv("gplugin_query", G_EVAL | G_NOARGS);
SPAGAIN;
if(ret != 1) {
g_set_error_literal(
error,
GPLUGIN_DOMAIN,
0,
"gplugin_query did not return a GPluginPluginInfo");
} else {
if(SvTRUE(ERRSV)) {
const gchar *errmsg = SvPVutf8_nolen(ERRSV);
g_set_error_literal(error, GPLUGIN_DOMAIN, 0, errmsg);
} else {
info = (GPluginPluginInfo *)gperl_get_object(POPs);
/* if we did get a real GPluginPluginInfo ref it because the perl
* code below will take it out of scope and delete it if its
* reference count is zero.
*/
if(GPLUGIN_IS_PLUGIN_INFO(info)) {
g_object_ref(G_OBJECT(info));
}
}
}
PUTBACK;
FREETMPS;
LEAVE;
my_perl = old;
return info;
}
static gboolean
gplugin_perl_loader_call_boolean(
PerlInterpreter *interpreter,
const gchar *func,
GError **error)
{
PerlInterpreter *old = NULL;
gboolean r = FALSE;
gint count = 0;
dSP;
old = my_perl;
my_perl = interpreter;
PERL_SET_CONTEXT(interpreter);
ENTER;
SAVETMPS;
PUSHMARK(SP);
PUTBACK;
count = call_pv(func, G_EVAL | G_SCALAR);
SPAGAIN;
if(count != 1) {
g_set_error(
error,
GPLUGIN_DOMAIN,
0,
"%s did not return a value",
func);
} else {
if(SvTRUE(ERRSV)) {
const gchar *errmsg = SvPVutf8_nolen(ERRSV);
g_set_error_literal(error, GPLUGIN_DOMAIN, 0, errmsg);
} else {
if(POPi == 0) {
r = TRUE;
}
}
}
PUTBACK;
FREETMPS;
LEAVE;
my_perl = old;
return r;
}
/******************************************************************************
* GPluginLoaderInterface API
*****************************************************************************/
static GSList *
gplugin_perl_loader_supported_extensions(G_GNUC_UNUSED GPluginLoader *l)
{
return g_slist_append(NULL, "pl");
}
static GPluginPlugin *
gplugin_perl_loader_query(
GPluginLoader *loader,
const gchar *filename,
GError **error)
{
GPluginPlugin *plugin = NULL;
GPluginPluginInfo *info = NULL;
PerlInterpreter *interpreter = NULL;
const gchar *args[] = {"", filename};
gchar **argv = (gchar **)args;
gint argc = 2, ret = 0;
interpreter = perl_alloc();
PERL_SET_CONTEXT(interpreter);
PL_perl_destruct_level = 1;
perl_construct(interpreter);
ret =
perl_parse(interpreter, gplugin_perl_loader_xs_init, argc, argv, NULL);
if(ret != 0) {
const gchar *errmsg = "unknown error";
if(SvTRUE(ERRSV)) {
errmsg = SvPVutf8_nolen(ERRSV);
}
g_set_error_literal(error, GPLUGIN_DOMAIN, 0, errmsg);
perl_destruct(interpreter);
perl_free(interpreter);
return NULL;
}
ret = perl_run(interpreter);
if(ret != 0) {
const gchar *errmsg = "unknown error";
if(SvTRUE(ERRSV)) {
errmsg = SvPVutf8_nolen(ERRSV);
}
g_set_error_literal(error, GPLUGIN_DOMAIN, 0, errmsg);
perl_destruct(interpreter);
perl_free(interpreter);
return NULL;
}
info = gplugin_perl_loader_call_gplugin_query(interpreter, error);
if(!GPLUGIN_IS_PLUGIN_INFO(info)) {
g_set_error_literal(error, GPLUGIN_DOMAIN, 0, "failed to query");
return NULL;
}
/* clang-format off */
plugin = g_object_new(
GPLUGIN_PERL_TYPE_PLUGIN,
"interpreter", interpreter,
"filename", filename,
"info", info,
"loader", g_object_ref(loader),
NULL);
/* clang-format on */
return plugin;
}
static gboolean
gplugin_perl_loader_load(
G_GNUC_UNUSED GPluginLoader *loader,
GPluginPlugin *plugin,
GError **error)
{
GPluginPerlPlugin *pplugin = GPLUGIN_PERL_PLUGIN(plugin);
PerlInterpreter *interpreter = NULL;
interpreter = gplugin_perl_plugin_get_interpreter(pplugin);
return gplugin_perl_loader_call_boolean(interpreter, "gplugin_load", error);
}
static gboolean
gplugin_perl_loader_unload(
G_GNUC_UNUSED GPluginLoader *loader,
GPluginPlugin *plugin,
GError **error)
{
GPluginPerlPlugin *pplugin = GPLUGIN_PERL_PLUGIN(plugin);
PerlInterpreter *interpreter = NULL;
interpreter = gplugin_perl_plugin_get_interpreter(pplugin);
return gplugin_perl_loader_call_boolean(
interpreter,
"gplugin_unload",
error);
}
/******************************************************************************
* GObject Stuff
*****************************************************************************/
static void
gplugin_perl_loader_init(G_GNUC_UNUSED GPluginPerlLoader *loader)
{
}
static void
gplugin_perl_loader_class_init(GPluginPerlLoaderClass *klass)
{
GPluginLoaderClass *loader_class = GPLUGIN_LOADER_CLASS(klass);
loader_class->supported_extensions =
gplugin_perl_loader_supported_extensions;
loader_class->query = gplugin_perl_loader_query;
loader_class->load = gplugin_perl_loader_load;
loader_class->unload = gplugin_perl_loader_unload;
/* perl initialization */
gplugin_perl_loader_init_perl();
}
static void
gplugin_perl_loader_class_finalize(G_GNUC_UNUSED GPluginPerlLoaderClass *klass)
{
/* perl uninitialization */
gplugin_perl_loader_uninit_perl();
}
/******************************************************************************
* API
*****************************************************************************/
void
gplugin_perl_loader_register(GPluginNativePlugin *plugin)
{
gplugin_perl_loader_register_type(G_TYPE_MODULE(plugin));
}