From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 13 Mar 2024 20:46:35 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1rkUYc-004nnj-1L for lore@lore.pengutronix.de; Wed, 13 Mar 2024 20:46:35 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rkUYb-0000mK-RE for lore@pengutronix.de; Wed, 13 Mar 2024 20:46:34 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:To:From:Reply-To:Cc:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=dckTcWSClAlpnzY7KFZozZq55gCf/Fafcg8J0mTRme4=; b=o0jswXItPMlwl8udMBpGZX6psI IN0Te+6e/QhmQ/Pjdjrpju866FAGRi9alLvJchb7aLk83+VkYAF1qG4hIAIw2mDyBFvhOgOTcAI3T zVmUhzNSyOxk29Qte/x0/gpOTtBORgtYPFdj8Kccx39rOZ3MfS1HQ69tmCJaIJ5eIJsbfrMzsyZPn ws76J1+5YdI8wGui8+4bVJlfPQi6ZfhFQW1HELd7anFZQROniCY0AjI4C57wn54eg7XPeIRIZAIiX fXzvXk6zS/+aBuFPJsDzd0uhMqzCPdCHBmblze9O7/eSd3BsuP4tOBhO35wFEUccbHnxKmTPLLeLe 1rHNW4Aw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkUY2-0000000BgnB-2tAL; Wed, 13 Mar 2024 19:45:58 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkUXz-0000000BglR-00so for barebox@lists.infradead.org; Wed, 13 Mar 2024 19:45:56 +0000 Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1rkUXv-0008L0-MV for barebox@lists.infradead.org; Wed, 13 Mar 2024 20:45:51 +0100 From: Marco Felsch To: barebox@lists.infradead.org Date: Wed, 13 Mar 2024 20:45:44 +0100 Message-Id: <20240313194547.3725723-1-m.felsch@pengutronix.de> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240313_124555_105895_2CE7889A X-CRM114-Status: UNSURE ( 5.35 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.5 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 1/4] string: add isempty helper X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) This adds systemd's isempty() helper which can be very handy. Signed-off-by: Marco Felsch --- include/string.h | 2 ++ lib/string.c | 6 ++++++ 2 files changed, 8 insertions(+) diff --git a/include/string.h b/include/string.h index 43911b75762f..ffe7c42d3093 100644 --- a/include/string.h +++ b/include/string.h @@ -20,4 +20,6 @@ char *parse_assignment(char *str); int strverscmp(const char *a, const char *b); +bool isempty(const char *s); + #endif /* __STRING_H */ diff --git a/lib/string.c b/lib/string.c index bf0f0455ab3f..20e6947347de 100644 --- a/lib/string.c +++ b/lib/string.c @@ -1000,3 +1000,9 @@ char *parse_assignment(char *str) return value; } + +bool isempty(const char *s) +{ + return !s || s[0] == '\0'; +} +EXPORT_SYMBOL(isempty); -- 2.39.2