From patchwork Tue May 4 10:26:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 12237885 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 443DCC433B4 for ; Tue, 4 May 2021 10:27:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 18425611C0 for ; Tue, 4 May 2021 10:27:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230375AbhEDK1z (ORCPT ); Tue, 4 May 2021 06:27:55 -0400 Received: from mga05.intel.com ([192.55.52.43]:42156 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230328AbhEDK1y (ORCPT ); Tue, 4 May 2021 06:27:54 -0400 IronPort-SDR: 2cYYoYfxNTC26ayvWvflYCd5aXufBmgGIHSPv4zd9ldAi0rGCc2tj4Yp49zSNEm/4JPXfqXz9i zR7qhG2v8MvQ== X-IronPort-AV: E=McAfee;i="6200,9189,9973"; a="283356644" X-IronPort-AV: E=Sophos;i="5.82,272,1613462400"; d="scan'208";a="283356644" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 May 2021 03:27:00 -0700 IronPort-SDR: LIwYMv7BUEA9VuYGTG046Vd5PnGND78cVido1jlj30DY0tztuVj5m2TlhDdyb/+Z4l2MyOXUHt nk9SrB5Y3NXQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,272,1613462400"; d="scan'208";a="428858436" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga008.fm.intel.com with ESMTP; 04 May 2021 03:26:57 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 71EE1348; Tue, 4 May 2021 13:27:17 +0300 (EEST) From: Andy Shevchenko To: "J. Bruce Fields" , Andy Shevchenko , linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-fsdevel@vger.kernel.org Cc: "J. Bruce Fields" , Chuck Lever , Alexander Viro , Andy Shevchenko , Andrew Morton Subject: [PATCH v2 02/14] lib/string_helpers: Move ESCAPE_NP check inside 'else' branch in a loop Date: Tue, 4 May 2021 13:26:36 +0300 Message-Id: <20210504102648.88057-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210504102648.88057-1-andriy.shevchenko@linux.intel.com> References: <20210504102648.88057-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Refactor code to have better readability by moving ESCAPE_NP handling inside 'else' branch in the loop. No functional change intended. Signed-off-by: Andy Shevchenko --- lib/string_helpers.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/lib/string_helpers.c b/lib/string_helpers.c index 7f2d5fbaf243..b10a18b4663b 100644 --- a/lib/string_helpers.c +++ b/lib/string_helpers.c @@ -452,10 +452,10 @@ static bool escape_hex(unsigned char c, char **dst, char *end) * The process of escaping byte buffer includes several parts. They are applied * in the following sequence. * - * 1. The character is matched to the printable class, if asked, and in - * case of match it passes through to the output. - * 2. The character is not matched to the one from @only string and thus + * 1. The character is not matched to the one from @only string and thus * must go as-is to the output. + * 2. The character is matched to the printable class, if asked, and in + * case of match it passes through to the output. * 3. The character is checked if it falls into the class given by @flags. * %ESCAPE_OCTAL and %ESCAPE_HEX are going last since they cover any * character. Note that they actually can't go together, otherwise @@ -506,19 +506,22 @@ int string_escape_mem(const char *src, size_t isz, char *dst, size_t osz, /* * Apply rules in the following sequence: - * - the character is printable, when @flags has - * %ESCAPE_NP bit set * - the @only string is supplied and does not contain a * character under question + * - the character is printable, when @flags has + * %ESCAPE_NP bit set * - the character doesn't fall into a class of symbols * defined by given @flags * In these cases we just pass through a character to the * output buffer. */ - if ((flags & ESCAPE_NP && isprint(c)) || - (is_dict && !strchr(only, c))) { + if (is_dict && !strchr(only, c)) { /* do nothing */ } else { + if (isprint(c) && + flags & ESCAPE_NP && escape_passthrough(c, &p, end)) + continue; + if (flags & ESCAPE_SPACE && escape_space(c, &p, end)) continue;