forked from osmocom/wireshark
78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
/** @file
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* Declarations of routines for gathering and handling lists of
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* present/absent features (usually actually dependencies)
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef __WSUTIL_FEATURE_LIST_H__
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#define __WSUTIL_FEATURE_LIST_H__
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#include <glib.h>
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#include "ws_symbol_export.h"
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/*
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* Handle to a list of features/dependencies.
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* Semi-opaque. Functions which gather the list of features
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* will be passed one of these to use with
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* `with_feature()`/`without_feature()` (below).
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*/
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typedef GList **feature_list;
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/*
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* The format of entries in a feature_list is a gchar* starting with a
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* '+' or '-' character indicating if the feature is respectively
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* present or absent, followed by the unchanged feature description.
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* This allows the insert order of features to be preserved,
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* while still preserving the present/absent status in a simple way.
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*/
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/*
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* Pointer to a function which gathers a list of features.
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*/
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typedef void(*gather_feature_func)(feature_list l);
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/*
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* Add an indicator to the given feature_list that the named
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* feature is present.
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*/
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WS_DLL_PUBLIC
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void with_feature(feature_list l, const char *fmt, ...) G_GNUC_PRINTF(2,3);
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/*
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* Add an indicator to the given feature_list that the named
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* feature is absent.
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*/
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WS_DLL_PUBLIC
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void without_feature(feature_list l, const char *fmt, ...) G_GNUC_PRINTF(2,3);
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/*
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* Sort the given feature list, alphabetically by feature name.
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* (The leading '+' or '-' is not factored into the sort.)
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* Currently unused.
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*/
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WS_DLL_PUBLIC
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void sort_features(feature_list l);
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/*
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* Free the memory used by the feature list,
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* and reset its pointer to NULL.
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*/
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WS_DLL_PUBLIC
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void free_features(feature_list l);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __WSUTIL_FEATURE_LIST_H__ */
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