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gopts.c
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gopts.c
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/**
* @file
*
* @brief Source for opts plugin
*
* @copyright BSD License (see LICENSE.md or https://www.libelektra.org)
*
*/
#include "gopts.h"
#include <kdbassert.h>
#include <kdberrors.h>
#include <kdbhelper.h>
#include <kdbmacros.h>
#include <kdbopts.h>
static int loadArgs (char *** argvp);
static char ** loadEnvp (void);
static void cleanupArgs (int argc, char ** argv);
static void cleanupEnvp (char ** envp);
#include "gopts_impl.c"
#if defined(ELEKTRA_GOPTS_PROCFS)
#include "gopts_procfs.h"
#elif defined(ELEKTRA_GOPTS_OSX)
#include "gopts_osx.h"
#elif defined(ELEKTRA_GOPTS_WIN32)
#include "gopts_win32.h"
#elif defined(ELEKTRA_GOPTS_SYSCTL)
#include "gopts_sysctl.h"
#else
#error "No implementation available"
#endif
/**
* Detects whether we are in help mode or not.
* DOES NOT set 'proc/elektra/gopts/help' for use with elektraGetOptsHelpMessage().
*
* @retval 1 if --help is part of argv
* @retval 0 otherwise
* @retval -1 on error (could not load argv)
*/
int elektraGOptsIsHelpMode (void)
{
char ** argv = NULL;
int argc = loadArgs (&argv);
if (argv == NULL)
{
return -1;
}
for (int i = 0; i < argc; ++i)
{
if (strcmp (argv[i], "--help") == 0)
{
return 1;
}
}
return 0;
}
int elektraGOptsGet (Plugin * handle ELEKTRA_UNUSED, KeySet * returned, Key * parentKey)
{
if (!elektraStrCmp (keyName (parentKey), "system/elektra/modules/gopts"))
{
KeySet * contract =
ksNew (30, keyNew ("system/elektra/modules/gopts", KEY_VALUE, "gopts plugin waits for your orders", KEY_END),
keyNew ("system/elektra/modules/gopts/exports", KEY_END),
keyNew ("system/elektra/modules/gopts/exports/get", KEY_FUNC, elektraGOptsGet, KEY_END),
keyNew ("system/elektra/modules/gopts/exports/ishelpmode", KEY_FUNC, elektraGOptsIsHelpMode, KEY_END),
#include ELEKTRA_README
keyNew ("system/elektra/modules/gopts/infos/version", KEY_VALUE, PLUGINVERSION, KEY_END), KS_END);
ksAppend (returned, contract);
ksDel (contract);
return ELEKTRA_PLUGIN_STATUS_SUCCESS;
}
char ** argv = NULL;
int argc = loadArgs (&argv);
char ** envp = loadEnvp ();
if (argv == NULL || envp == NULL)
{
ELEKTRA_SET_INSTALLATION_ERROR (parentKey, "could not load current process' arguments");
return ELEKTRA_PLUGIN_STATUS_ERROR;
}
int ret = elektraGetOpts (returned, argc, (const char **) argv, (const char **) envp, parentKey);
cleanupArgs (argc, argv);
cleanupEnvp (envp);
if (ret == -1)
{
return ELEKTRA_PLUGIN_STATUS_ERROR;
}
else if (ret == 1)
{
Key * helpKey = keyNew ("proc/elektra/gopts/help", KEY_VALUE, "1", KEY_END);
keyCopyAllMeta (helpKey, parentKey);
ksAppendKey (returned, helpKey);
return ELEKTRA_PLUGIN_STATUS_SUCCESS;
}
return ELEKTRA_PLUGIN_STATUS_SUCCESS;
}
Plugin * ELEKTRA_PLUGIN_EXPORT
{
// clang-format off
return elektraPluginExport ("gopts",
ELEKTRA_PLUGIN_GET, &elektraGOptsGet,
ELEKTRA_PLUGIN_END);
// clang-format on
}