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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
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*
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rpm-build |
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* Copyright (C) 2017 Colin Walters <walters@verbum.org>
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rpm-build |
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* With original source from systemd:
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rpm-build |
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* Copyright 2010 Lennart Poettering
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rpm-build |
c487f7 |
*
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rpm-build |
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* This library is free software; you can redistribute it and/or
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rpm-build |
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* modify it under the terms of the GNU Lesser General Public
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rpm-build |
c487f7 |
* License as published by the Free Software Foundation; either
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rpm-build |
c487f7 |
* version 2 of the License, or (at your option) any later version.
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rpm-build |
c487f7 |
*
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rpm-build |
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* This library is distributed in the hope that it will be useful,
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rpm-build |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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rpm-build |
c487f7 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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rpm-build |
c487f7 |
* Lesser General Public License for more details.
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rpm-build |
c487f7 |
*
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rpm-build |
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* You should have received a copy of the GNU Lesser General Public
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rpm-build |
c487f7 |
* License along with this library; if not, write to the
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rpm-build |
c487f7 |
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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rpm-build |
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* Boston, MA 02111-1307, USA.
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rpm-build |
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*/
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rpm-build |
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#pragma once
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rpm-build |
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rpm-build |
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#include <stdlib.h>
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#include <string.h>
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#include <gio/gio.h>
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rpm-build |
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rpm-build |
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G_BEGIN_DECLS
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rpm-build |
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rpm-build |
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/* All of these are for C only. */
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rpm-build |
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#ifndef __GI_SCANNER__
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rpm-build |
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rpm-build |
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/* Taken from https://github.com/systemd/systemd/src/basic/string-util.h
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* at revision v228-666-gcf6c8c4
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rpm-build |
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*/
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#define glnx_strjoina(a, ...) \
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({ \
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const char *_appendees_[] = { a, __VA_ARGS__ }; \
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rpm-build |
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char *_d_, *_p_; \
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size_t _len_ = 0; \
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unsigned _i_; \
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for (_i_ = 0; _i_ < G_N_ELEMENTS(_appendees_) && _appendees_[_i_]; _i_++) \
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_len_ += strlen(_appendees_[_i_]); \
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rpm-build |
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_p_ = _d_ = alloca(_len_ + 1); \
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for (_i_ = 0; _i_ < G_N_ELEMENTS(_appendees_) && _appendees_[_i_]; _i_++) \
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_p_ = stpcpy(_p_, _appendees_[_i_]); \
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*_p_ = 0; \
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rpm-build |
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_d_; \
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rpm-build |
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})
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rpm-build |
c487f7 |
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rpm-build |
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#ifndef G_IN_SET
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rpm-build |
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rpm-build |
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/* Infrastructure for `G_IN_SET`; this code is copied from
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rpm-build |
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* systemd's macro.h - please treat that version as canonical
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rpm-build |
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* and submit patches first to systemd.
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rpm-build |
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*/
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#define _G_INSET_CASE_F(X) case X:
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#define _G_INSET_CASE_F_1(CASE, X) _G_INSET_CASE_F(X)
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#define _G_INSET_CASE_F_2(CASE, X, ...) CASE(X) _G_INSET_CASE_F_1(CASE, __VA_ARGS__)
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#define _G_INSET_CASE_F_3(CASE, X, ...) CASE(X) _G_INSET_CASE_F_2(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_4(CASE, X, ...) CASE(X) _G_INSET_CASE_F_3(CASE, __VA_ARGS__)
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#define _G_INSET_CASE_F_5(CASE, X, ...) CASE(X) _G_INSET_CASE_F_4(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_6(CASE, X, ...) CASE(X) _G_INSET_CASE_F_5(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_7(CASE, X, ...) CASE(X) _G_INSET_CASE_F_6(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_8(CASE, X, ...) CASE(X) _G_INSET_CASE_F_7(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_9(CASE, X, ...) CASE(X) _G_INSET_CASE_F_8(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_10(CASE, X, ...) CASE(X) _G_INSET_CASE_F_9(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_11(CASE, X, ...) CASE(X) _G_INSET_CASE_F_10(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_12(CASE, X, ...) CASE(X) _G_INSET_CASE_F_11(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_13(CASE, X, ...) CASE(X) _G_INSET_CASE_F_12(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_14(CASE, X, ...) CASE(X) _G_INSET_CASE_F_13(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_15(CASE, X, ...) CASE(X) _G_INSET_CASE_F_14(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_16(CASE, X, ...) CASE(X) _G_INSET_CASE_F_15(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_17(CASE, X, ...) CASE(X) _G_INSET_CASE_F_16(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_18(CASE, X, ...) CASE(X) _G_INSET_CASE_F_17(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_19(CASE, X, ...) CASE(X) _G_INSET_CASE_F_18(CASE, __VA_ARGS__)
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rpm-build |
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#define _G_INSET_CASE_F_20(CASE, X, ...) CASE(X) _G_INSET_CASE_F_19(CASE, __VA_ARGS__)
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rpm-build |
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rpm-build |
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#define _G_INSET_GET_CASE_F(_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12,_13,_14,_15,_16,_17,_18,_19,_20,NAME,...) NAME
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#define _G_INSET_FOR_EACH_MAKE_CASE(...) \
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rpm-build |
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_G_INSET_GET_CASE_F(__VA_ARGS__,_G_INSET_CASE_F_20,_G_INSET_CASE_F_19,_G_INSET_CASE_F_18,_G_INSET_CASE_F_17,_G_INSET_CASE_F_16,_G_INSET_CASE_F_15,_G_INSET_CASE_F_14,_G_INSET_CASE_F_13,_G_INSET_CASE_F_12,_G_INSET_CASE_F_11, \
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_G_INSET_CASE_F_10,_G_INSET_CASE_F_9,_G_INSET_CASE_F_8,_G_INSET_CASE_F_7,_G_INSET_CASE_F_6,_G_INSET_CASE_F_5,_G_INSET_CASE_F_4,_G_INSET_CASE_F_3,_G_INSET_CASE_F_2,_G_INSET_CASE_F_1) \
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rpm-build |
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(_G_INSET_CASE_F,__VA_ARGS__)
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rpm-build |
c487f7 |
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rpm-build |
c487f7 |
/* Note: claiming the name here even though it isn't upstream yet
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rpm-build |
c487f7 |
* https://bugzilla.gnome.org/show_bug.cgi?id=783751
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rpm-build |
c487f7 |
*/
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rpm-build |
c487f7 |
/**
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rpm-build |
c487f7 |
* G_IN_SET:
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rpm-build |
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* @x: Integer (or smaller) sized value
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rpm-build |
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* @...: Elements to compare
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rpm-build |
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*
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rpm-build |
c487f7 |
* It's quite common to test whether or not `char` values or Unix @errno (among) others
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rpm-build |
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* are members of a small set. Normally one has to choose to either use `if (x == val || x == otherval ...)`
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rpm-build |
c487f7 |
* or a `switch` statement. This macro is useful to reduce duplication in the first case,
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rpm-build |
c487f7 |
* where one can write simply `if (G_IN_SET (x, val, otherval))`, and avoid the verbosity
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rpm-build |
c487f7 |
* that the `switch` statement requires.
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rpm-build |
c487f7 |
*/
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rpm-build |
c487f7 |
#define G_IN_SET(x, ...) \
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rpm-build |
c487f7 |
({ \
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rpm-build |
c487f7 |
gboolean _g_inset_found = FALSE; \
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rpm-build |
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/* If the build breaks in the line below, you need to extend the case macros */ \
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rpm-build |
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static G_GNUC_UNUSED char _static_assert__macros_need_to_be_extended[20 - sizeof((int[]){__VA_ARGS__})/sizeof(int)]; \
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rpm-build |
c487f7 |
switch(x) { \
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rpm-build |
c487f7 |
_G_INSET_FOR_EACH_MAKE_CASE(__VA_ARGS__) \
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rpm-build |
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_g_inset_found = TRUE; \
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rpm-build |
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break; \
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rpm-build |
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default: \
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rpm-build |
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break; \
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rpm-build |
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} \
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rpm-build |
c487f7 |
_g_inset_found; \
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rpm-build |
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})
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rpm-build |
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rpm-build |
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#endif /* ifndef G_IN_SET */
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rpm-build |
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rpm-build |
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#define _GLNX_CONCAT(a, b) a##b
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rpm-build |
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#define _GLNX_CONCAT_INDIRECT(a, b) _GLNX_CONCAT(a, b)
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rpm-build |
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#define _GLNX_MAKE_ANONYMOUS(a) _GLNX_CONCAT_INDIRECT(a, __COUNTER__)
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rpm-build |
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rpm-build |
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#define _GLNX_HASH_TABLE_FOREACH_IMPL_KV(guard, ht, it, kt, k, vt, v) \
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rpm-build |
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gboolean guard = TRUE; \
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rpm-build |
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G_STATIC_ASSERT (sizeof (kt) == sizeof (void*)); \
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|
rpm-build |
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G_STATIC_ASSERT (sizeof (vt) == sizeof (void*)); \
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|
rpm-build |
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for (GHashTableIter it; \
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rpm-build |
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guard && ({ g_hash_table_iter_init (&it, ht), TRUE; }); \
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rpm-build |
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guard = FALSE) \
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rpm-build |
c487f7 |
for (kt k; guard; guard = FALSE) \
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|
rpm-build |
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for (vt v; g_hash_table_iter_next (&it, (gpointer)&k, (gpointer)&v);)
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rpm-build |
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rpm-build |
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|
|
rpm-build |
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/* Cleaner method to iterate over a GHashTable. I.e. rather than
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rpm-build |
c487f7 |
*
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rpm-build |
c487f7 |
* gpointer k, v;
|
|
rpm-build |
c487f7 |
* GHashTableIter it;
|
|
rpm-build |
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* g_hash_table_iter_init (&it, table);
|
|
rpm-build |
c487f7 |
* while (g_hash_table_iter_next (&it, &k, &v))
|
|
rpm-build |
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* {
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|
rpm-build |
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* const char *str = k;
|
|
rpm-build |
c487f7 |
* GPtrArray *arr = v;
|
|
rpm-build |
c487f7 |
* ...
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|
rpm-build |
c487f7 |
* }
|
|
rpm-build |
c487f7 |
*
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rpm-build |
c487f7 |
* you can simply do
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rpm-build |
c487f7 |
*
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rpm-build |
c487f7 |
* GLNX_HASH_TABLE_FOREACH_IT (table, it, const char*, str, GPtrArray*, arr)
|
|
rpm-build |
c487f7 |
* {
|
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rpm-build |
c487f7 |
* ...
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|
rpm-build |
c487f7 |
* }
|
|
rpm-build |
c487f7 |
*
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|
rpm-build |
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* All variables are scoped within the loop. You may use the `it` variable as
|
|
rpm-build |
c487f7 |
* usual, e.g. to remove an element using g_hash_table_iter_remove(&it). There
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|
rpm-build |
c487f7 |
* are shorter variants for the more common cases where you do not need access
|
|
rpm-build |
c487f7 |
* to the iterator or to keys/values:
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|
rpm-build |
c487f7 |
*
|
|
rpm-build |
c487f7 |
* GLNX_HASH_TABLE_FOREACH (table, const char*, str) { ... }
|
|
rpm-build |
c487f7 |
* GLNX_HASH_TABLE_FOREACH_V (table, MyData*, data) { ... }
|
|
rpm-build |
c487f7 |
* GLNX_HASH_TABLE_FOREACH_KV (table, const char*, str, MyData*, data) { ... }
|
|
rpm-build |
c487f7 |
*
|
|
rpm-build |
c487f7 |
*/
|
|
rpm-build |
c487f7 |
#define GLNX_HASH_TABLE_FOREACH_IT(ht, it, kt, k, vt, v) \
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|
rpm-build |
c487f7 |
_GLNX_HASH_TABLE_FOREACH_IMPL_KV( \
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|
rpm-build |
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_GLNX_MAKE_ANONYMOUS(_glnx_ht_iter_guard_), ht, it, kt, k, vt, v)
|
|
rpm-build |
c487f7 |
|
|
rpm-build |
c487f7 |
/* Variant of GLNX_HASH_TABLE_FOREACH without having to specify an iterator. An
|
|
rpm-build |
c487f7 |
* anonymous iterator will be created. */
|
|
rpm-build |
c487f7 |
#define GLNX_HASH_TABLE_FOREACH_KV(ht, kt, k, vt, v) \
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|
rpm-build |
c487f7 |
_GLNX_HASH_TABLE_FOREACH_IMPL_KV( \
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|
rpm-build |
c487f7 |
_GLNX_MAKE_ANONYMOUS(_glnx_ht_iter_guard_), ht, \
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|
rpm-build |
c487f7 |
_GLNX_MAKE_ANONYMOUS(_glnx_ht_iter_it_), kt, k, vt, v)
|
|
rpm-build |
c487f7 |
|
|
rpm-build |
c487f7 |
/* Variant of GLNX_HASH_TABLE_FOREACH_KV which omits unpacking keys. */
|
|
rpm-build |
c487f7 |
#define GLNX_HASH_TABLE_FOREACH_V(ht, vt, v) \
|
|
rpm-build |
c487f7 |
_GLNX_HASH_TABLE_FOREACH_IMPL_KV( \
|
|
rpm-build |
c487f7 |
_GLNX_MAKE_ANONYMOUS(_glnx_ht_iter_guard_), ht, \
|
|
rpm-build |
c487f7 |
_GLNX_MAKE_ANONYMOUS(_glnx_ht_iter_it_), \
|
|
rpm-build |
c487f7 |
gpointer, _GLNX_MAKE_ANONYMOUS(_glnx_ht_iter_v_), \
|
|
rpm-build |
c487f7 |
vt, v)
|
|
rpm-build |
c487f7 |
|
|
rpm-build |
c487f7 |
/* Variant of GLNX_HASH_TABLE_FOREACH_KV which omits unpacking vals. */
|
|
rpm-build |
c487f7 |
#define GLNX_HASH_TABLE_FOREACH(ht, kt, k) \
|
|
rpm-build |
c487f7 |
_GLNX_HASH_TABLE_FOREACH_IMPL_KV( \
|
|
rpm-build |
c487f7 |
_GLNX_MAKE_ANONYMOUS(_glnx_ht_iter_guard_), ht, \
|
|
rpm-build |
c487f7 |
_GLNX_MAKE_ANONYMOUS(_glnx_ht_iter_it_), kt, k, \
|
|
rpm-build |
c487f7 |
gpointer, _GLNX_MAKE_ANONYMOUS(_glnx_ht_iter_v_))
|
|
rpm-build |
c487f7 |
|
|
rpm-build |
c487f7 |
#endif /* GI_SCANNER */
|
|
rpm-build |
c487f7 |
|
|
rpm-build |
c487f7 |
G_END_DECLS
|