{"id":18043,"url":"https://patchwork.libcamera.org/api/1.1/patches/18043/?format=json","web_url":"https://patchwork.libcamera.org/patch/18043/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/1.1/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20221221173847.73663-1-kieran.bingham@ideasonboard.com>","date":"2022-12-21T17:38:47","name":"[libcamera-devel] libcamera: yaml_parser: Use C locale","commit_ref":null,"pull_url":null,"state":"accepted","archived":false,"hash":"ff041329309ff13aa774e010658fa67272ab4e78","submitter":{"id":4,"url":"https://patchwork.libcamera.org/api/1.1/people/4/?format=json","name":"Kieran Bingham","email":"kieran.bingham@ideasonboard.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/18043/mbox/","series":[{"id":3682,"url":"https://patchwork.libcamera.org/api/1.1/series/3682/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=3682","date":"2022-12-21T17:38:47","name":"[libcamera-devel] libcamera: yaml_parser: Use C locale","version":1,"mbox":"https://patchwork.libcamera.org/series/3682/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/18043/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/18043/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 43271C3200\n\tfor ;\n\tWed, 21 Dec 2022 17:38:59 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 91674633AC;\n\tWed, 21 Dec 2022 18:38:58 +0100 (CET)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id DA38761F15\n\tfor ;\n\tWed, 21 Dec 2022 18:38:56 +0100 (CET)","from Monstersaurus.local\n\t(cpc89244-aztw30-2-0-cust3082.18-1.cable.virginm.net [86.31.172.11])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 25E1CFB;\n\tWed, 21 Dec 2022 18:38:56 +0100 (CET)"],"DKIM-Signature":["v=1; 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dkim=pass (1024-bit key; \n\tunprotected) header.d=ideasonboard.com\n\theader.i=@ideasonboard.com\n\theader.b=\"NKu77dmf\"; dkim-atps=neutral","To":"libcamera devel ","Date":"Wed, 21 Dec 2022 17:38:47 +0000","Message-Id":"<20221221173847.73663-1-kieran.bingham@ideasonboard.com>","X-Mailer":"git-send-email 2.34.1","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH] libcamera: yaml_parser: Use C locale","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","From":"Kieran Bingham via libcamera-devel\n\t","Reply-To":"Kieran Bingham ","Cc":"Hannes Winkler ","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"When parsing configuration files on systems with differing locales, the\nuse of strtod can produce different results, or in the worst case - fail\nto parse expected values.\n\nProvide an RAII implementation to construct a locale specific to the\nexpected mappings for configuration files provided by libcamera.\n\nBug: https://bugs.libcamera.org/show_bug.cgi?id=174\nBug: https://github.com/raspberrypi/libcamera/issues/29\nReported-by: https://github.com/kralo\nReported-by: Hannes Winkler \nSigned-off-by: Kieran Bingham \n---\n src/libcamera/yaml_parser.cpp | 32 +++++++++++++++++++++++++++++++-\n 1 file changed, 31 insertions(+), 1 deletion(-)","diff":"diff --git a/src/libcamera/yaml_parser.cpp b/src/libcamera/yaml_parser.cpp\nindex d8a7c2f9250f..8ddc6d6b5fd5 100644\n--- a/src/libcamera/yaml_parser.cpp\n+++ b/src/libcamera/yaml_parser.cpp\n@@ -31,6 +31,36 @@ namespace {\n /* Empty static YamlObject as a safe result for invalid operations */\n static const YamlObject empty;\n \n+/*\n+ * Construct a global RAII locale for use by all YAML parser instances to\n+ * ensure consistency when parsing configuration files and types regardless of\n+ * the host Locale configuration.\n+ *\n+ * For more information see:\n+ * - https://bugs.libcamera.org/show_bug.cgi?id=174\n+ */\n+class Locale\n+{\n+public:\n+\tLocale(std::string locale)\n+\t{\n+\t\tlocale_ = newlocale(LC_ALL_MASK, locale.c_str(), (locale_t)0);\n+\t\tif (locale_ == (locale_t)0)\n+\t\t\tLOG(YamlParser, Fatal)\n+\t\t\t\t<< \"Failed to construct a locale\";\n+\t}\n+\t~Locale()\n+\t{\n+\t\tfreelocale(locale_);\n+\t}\n+\tlocale_t locale() { return locale_; }\n+\n+private:\n+\tlocale_t locale_;\n+};\n+\n+static Locale yamlLocale(\"C\");\n+\n } /* namespace */\n \n /**\n@@ -283,7 +313,7 @@ std::optional YamlObject::get() const\n \tchar *end;\n \n \terrno = 0;\n-\tdouble value = std::strtod(value_.c_str(), &end);\n+\tdouble value = strtod_l(value_.c_str(), &end, yamlLocale.locale());\n \n \tif ('\\0' != *end || errno == ERANGE)\n \t\treturn std::nullopt;\n","prefixes":["libcamera-devel"]}