[{"id":11991,"web_url":"https://patchwork.libcamera.org/comment/11991/","msgid":"","date":"2020-08-13T15:21:44","subject":"Re: [libcamera-devel] [PATCH v3 2/7] libcamera: utils: Add method\n\tto strip Unicode characters","submitter":{"id":4,"url":"https://patchwork.libcamera.org/api/people/4/","name":"Kieran Bingham","email":"kieran.bingham@ideasonboard.com"},"content":"Hi Niklas,\n\nOn 13/08/2020 10:57, Niklas Söderlund wrote:\n> Add method that strips non-ASCII characters from a string.\n> \n> Signed-off-by: Niklas Söderlund \n> ---\n> include/libcamera/internal/utils.h | 2 ++\n> src/libcamera/utils.cpp | 21 +++++++++++++++++++++\n> 2 files changed, 23 insertions(+)\n> \n> diff --git a/include/libcamera/internal/utils.h b/include/libcamera/internal/utils.h\n> index 45cd6f120c51586b..5bfd2a8782dbd623 100644\n> --- a/include/libcamera/internal/utils.h\n> +++ b/include/libcamera/internal/utils.h\n> @@ -197,6 +197,8 @@ private:\n> \n> details::StringSplitter split(const std::string &str, const std::string &delim);\n> \n> +std::string stripUnicode(const std::string &str);\n> +\n> std::string libcameraBuildPath();\n> std::string libcameraSourcePath();\n> \n> diff --git a/src/libcamera/utils.cpp b/src/libcamera/utils.cpp\n> index 615df46ac142a2a9..041fdc91a0a35277 100644\n> --- a/src/libcamera/utils.cpp\n> +++ b/src/libcamera/utils.cpp\n> @@ -342,6 +342,27 @@ details::StringSplitter split(const std::string &str, const std::string &delim)\n> \treturn details::StringSplitter(str, delim);\n> }\n> \n> +/**\n> + * \\brief Strip all Unicode characters from a string\n> + * \\param[in] str The string to strip\n> + *\n> + * Strip all non-ASCII characters form a string. An Unicode character that spans\n\ns/An/A/\n\n> + * multiple bytes (and therefor is not also an ASCII character) may be\n\ns/therefor/therefore/\n\n> + * identified by the fact that its most significant bit is always set.\n> + *\n> + * \\todo When switching to C++ 20 use std::remove_if.\n> + *\n> + * \\return An ASCII string\n> + */\n> +std::string stripUnicode(const std::string &str)\n> +{\n> +\tstd::string ret;\n> +\tfor (const char &c : str)\n> +\t\tif (!(c & 0x80))\n> +\t\t\tret += c;\n\nShould we replace non-ascii characters with a replacement such as '_'?\n\nAlthough the name is 'strip' so that does imply we want to remove them.\n\nAlso should std::isprint() be used? I presume we want to remove all\nnon-printable chars - i.e. anything that's not valid for display?\n\n\n> +\treturn ret;\n> +}\n> +\n> /**\n> * \\brief Check if libcamera is installed or not\n> *\n>","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 8359BBD87C\n\tfor ;\n\tThu, 13 Aug 2020 15:21:49 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 16244613A9;\n\tThu, 13 Aug 2020 17:21:49 +0200 (CEST)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 3AD116038C\n\tfor ;\n\tThu, 13 Aug 2020 17:21:48 +0200 (CEST)","from [192.168.0.20]\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 A56FC80C;\n\tThu, 13 Aug 2020 17:21:47 +0200 (CEST)"],"Authentication-Results":"lancelot.ideasonboard.com;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"ChF8FPq3\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1597332107;\n\tbh=8Mo/ikb5AEv+cO6577C8SeMfVh7qLb03+abhiK+QxJ8=;\n\th=Reply-To:Subject:To:References:From:Date:In-Reply-To:From;\n\tb=ChF8FPq3PqJYFs60zkj5SIDRv4f0TeDIErs77TkQJ2U4EWhAaPM8hhlBjzBf1FY88\n\tymgalPHmbYsnJ0p60iLvndFaUfoGHlBATFQU0ZpcjMeCmQO5M1g2GD69lUPh9GzQCg\n\tL1WOB5O+ywSuf91t779giOxsrhN5cbbZ5wSYnHr4=","To":"=?utf-8?q?Niklas_S=C3=B6derlund?= ,\n\tlibcamera-devel@lists.libcamera.org","References":"<20200813095726.3497193-1-niklas.soderlund@ragnatech.se>\n\t<20200813095726.3497193-3-niklas.soderlund@ragnatech.se>","From":"Kieran Bingham ","Autocrypt":"addr=kieran.bingham@ideasonboard.com; keydata=\n\tmQINBFYE/WYBEACs1PwjMD9rgCu1hlIiUA1AXR4rv2v+BCLUq//vrX5S5bjzxKAryRf0uHat\n\tV/zwz6hiDrZuHUACDB7X8OaQcwhLaVlq6byfoBr25+hbZG7G3+5EUl9cQ7dQEdvNj6V6y/SC\n\trRanWfelwQThCHckbobWiQJfK9n7rYNcPMq9B8e9F020LFH7Kj6YmO95ewJGgLm+idg1Kb3C\n\tpotzWkXc1xmPzcQ1fvQMOfMwdS+4SNw4rY9f07Xb2K99rjMwZVDgESKIzhsDB5GY465sCsiQ\n\tcSAZRxqE49RTBq2+EQsbrQpIc8XiffAB8qexh5/QPzCmR4kJgCGeHIXBtgRj+nIkCJPZvZtf\n\tKr2EAbc6tgg6DkAEHJb+1okosV09+0+TXywYvtEop/WUOWQ+zo+Y/OBd+8Ptgt1pDRyOBzL8\n\tRXa8ZqRf0Mwg75D+dKntZeJHzPRJyrlfQokngAAs4PaFt6UfS+ypMAF37T6CeDArQC41V3ko\n\tlPn1yMsVD0p+6i3DPvA/GPIksDC4owjnzVX9kM8Zc5Cx+XoAN0w5Eqo4t6qEVbuettxx55gq\n\t8K8FieAjgjMSxngo/HST8TpFeqI5nVeq0/lqtBRQKumuIqDg+Bkr4L1V/PSB6XgQcOdhtd36\n\tOe9X9dXB8YSNt7VjOcO7BTmFn/Z8r92mSAfHXpb07YJWJosQOQARAQABtDBLaWVyYW4gQmlu\n\tZ2hhbSA8a2llcmFuLmJpbmdoYW1AaWRlYXNvbmJvYXJkLmNvbT6JAlcEEwEKAEECGwMFCwkI\n\tBwIGFQgJCgsCBBYCAwECHgECF4ACGQEWIQSQLdeYP70o/eNy1HqhHkZyEKRh/QUCXWTtygUJ\n\tCyJXZAAKCRChHkZyEKRh/f8dEACTDsbLN2nioNZMwyLuQRUAFcXNolDX48xcUXsWS2QjxaPm\n\tVsJx8Uy8aYkS85mdPBh0C83OovQR/OVbr8AxhGvYqBs3nQvbWuTl/+4od7DfK2VZOoKBAu5S\n\tQK2FYuUcikDqYcFWJ8DQnubxfE8dvzojHEkXw0sA4igINHDDFX3HJGZtLio+WpEFQtCbfTAG\n\tYZslasz1YZRbwEdSsmO3/kqy5eMnczlm8a21A3fKUo3g8oAZEFM+f4DUNzqIltg31OAB/kZS\n\tenKZQ/SWC8PmLg/ZXBrReYakxXtkP6w3FwMlzOlhGxqhIRNiAJfXJBaRhuUWzPOpEDE9q5YJ\n\tBmqQL2WJm1VSNNVxbXJHpaWMH1sA2R00vmvRrPXGwyIO0IPYeUYQa3gsy6k+En/aMQJd27dp\n\taScf9am9PFICPY5T4ppneeJLif2lyLojo0mcHOV+uyrds9XkLpp14GfTkeKPdPMrLLTsHRfH\n\tfA4I4OBpRrEPiGIZB/0im98MkGY/Mu6qxeZmYLCcgD6qz4idOvfgVOrNh+aA8HzIVR+RMW8H\n\tQGBN9f0E3kfwxuhl3omo6V7lDw8XOdmuWZNC9zPq1UfryVHANYbLGz9KJ4Aw6M+OgBC2JpkD\n\thXMdHUkC+d20dwXrwHTlrJi1YNp6rBc+xald3wsUPOZ5z8moTHUX/uPA/qhGsbkCDQRWBP1m\n\tARAAzijkb+Sau4hAncr1JjOY+KyFEdUNxRy+hqTJdJfaYihxyaj0Ee0P0zEi35CbE6lgU0Uz\n\ttih9fiUbSV3wfsWqg1Ut3/5rTKu7kLFp15kF7eqvV4uezXRD3Qu4yjv/rMmEJbbD4cTvGCYI\n\td6MDC417f7vK3hCbCVIZSp3GXxyC1LU+UQr3fFcOyCwmP9vDUR9JV0BSqHHxRDdpUXE26Dk6\n\tmhf0V1YkspE5St814ETXpEus2urZE5yJIUROlWPIL+hm3NEWfAP06vsQUyLvr/GtbOT79vXl\n\tEn1aulcYyu20dRRxhkQ6iILaURcxIAVJJKPi8dsoMnS8pB0QW12AHWuirPF0g6DiuUfPmrA5\n\tPKe56IGlpkjc8cO51lIxHkWTpCMWigRdPDexKX+Sb+W9QWK/0JjIc4t3KBaiG8O4yRX8ml2R\n\t+rxfAVKM6V769P/hWoRGdgUMgYHFpHGSgEt80OKK5HeUPy2cngDUXzwrqiM5Sz6Od0qw5pCk\n\tNlXqI0W/who0iSVM+8+RmyY0OEkxEcci7rRLsGnM15B5PjLJjh1f2ULYkv8s4SnDwMZ/kE04\n\t/UqCMK/KnX8pwXEMCjz0h6qWNpGwJ0/tYIgQJZh6bqkvBrDogAvuhf60Sogw+mH8b+PBlx1L\n\toeTK396wc+4c3BfiC6pNtUS5GpsPMMjYMk7kVvEAEQEAAYkCPAQYAQoAJgIbDBYhBJAt15g/\n\tvSj943LUeqEeRnIQpGH9BQJdizzIBQkLSKZiAAoJEKEeRnIQpGH9eYgQAJpjaWNgqNOnMTmD\n\tMJggbwjIotypzIXfhHNCeTkG7+qCDlSaBPclcPGYrTwCt0YWPU2TgGgJrVhYT20ierN8LUvj\n\t6qOPTd+Uk7NFzL65qkh80ZKNBFddx1AabQpSVQKbdcLb8OFs85kuSvFdgqZwgxA1vl4TFhNz\n\tPZ79NAmXLackAx3sOVFhk4WQaKRshCB7cSl+RIng5S/ThOBlwNlcKG7j7W2MC06BlTbdEkUp\n\tECzuuRBv8wX4OQl+hbWbB/VKIx5HKlLu1eypen/5lNVzSqMMIYkkZcjV2SWQyUGxSwq0O/sx\n\tS0A8/atCHUXOboUsn54qdxrVDaK+6jIAuo8JiRWctP16KjzUM7MO0/+4zllM8EY57rXrj48j\n\tsbEYX0YQnzaj+jO6kJtoZsIaYR7rMMq9aUAjyiaEZpmP1qF/2sYenDx0Fg2BSlLvLvXM0vU8\n\tpQk3kgDu7kb/7PRYrZvBsr21EIQoIjXbZxDz/o7z95frkP71EaICttZ6k9q5oxxA5WC6sTXc\n\tMW8zs8avFNuA9VpXt0YupJd2ijtZy2mpZNG02fFVXhIn4G807G7+9mhuC4XG5rKlBBUXTvPU\n\tAfYnB4JBDLmLzBFavQfvonSfbitgXwCG3vS+9HEwAjU30Bar1PEOmIbiAoMzuKeRm2LVpmq4\n\tWZw01QYHU/GUV/zHJSFk","Organization":"Ideas on Board","Message-ID":"","Date":"Thu, 13 Aug 2020 16:21:44 +0100","User-Agent":"Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101\n\tThunderbird/68.10.0","MIME-Version":"1.0","In-Reply-To":"<20200813095726.3497193-3-niklas.soderlund@ragnatech.se>","Content-Language":"en-GB","Subject":"Re: [libcamera-devel] [PATCH v3 2/7] libcamera: utils: Add method\n\tto strip Unicode characters","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","Reply-To":"kieran.bingham@ideasonboard.com","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"base64","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "}},{"id":11994,"web_url":"https://patchwork.libcamera.org/comment/11994/","msgid":"","date":"2020-08-13T15:42:52","subject":"Re: [libcamera-devel] [PATCH v3 2/7] libcamera: utils: Add method\n\tto strip Unicode characters","submitter":{"id":4,"url":"https://patchwork.libcamera.org/api/people/4/","name":"Kieran Bingham","email":"kieran.bingham@ideasonboard.com"},"content":"On 13/08/2020 16:21, Kieran Bingham wrote:\n> Hi Niklas,\n> \n> On 13/08/2020 10:57, Niklas Söderlund wrote:\n>> Add method that strips non-ASCII characters from a string.\n>>\n>> Signed-off-by: Niklas Söderlund \n>> ---\n>> include/libcamera/internal/utils.h | 2 ++\n>> src/libcamera/utils.cpp | 21 +++++++++++++++++++++\n>> 2 files changed, 23 insertions(+)\n>>\n>> diff --git a/include/libcamera/internal/utils.h b/include/libcamera/internal/utils.h\n>> index 45cd6f120c51586b..5bfd2a8782dbd623 100644\n>> --- a/include/libcamera/internal/utils.h\n>> +++ b/include/libcamera/internal/utils.h\n>> @@ -197,6 +197,8 @@ private:\n>> \n>> details::StringSplitter split(const std::string &str, const std::string &delim);\n>> \n>> +std::string stripUnicode(const std::string &str);\n>> +\n>> std::string libcameraBuildPath();\n>> std::string libcameraSourcePath();\n>> \n>> diff --git a/src/libcamera/utils.cpp b/src/libcamera/utils.cpp\n>> index 615df46ac142a2a9..041fdc91a0a35277 100644\n>> --- a/src/libcamera/utils.cpp\n>> +++ b/src/libcamera/utils.cpp\n>> @@ -342,6 +342,27 @@ details::StringSplitter split(const std::string &str, const std::string &delim)\n>> \treturn details::StringSplitter(str, delim);\n>> }\n>> \n>> +/**\n>> + * \\brief Strip all Unicode characters from a string\n>> + * \\param[in] str The string to strip\n>> + *\n>> + * Strip all non-ASCII characters form a string. An Unicode character that spans\n> \n> s/An/A/\n> \n>> + * multiple bytes (and therefor is not also an ASCII character) may be\n> \n> s/therefor/therefore/\n> \n>> + * identified by the fact that its most significant bit is always set.\n>> + *\n>> + * \\todo When switching to C++ 20 use std::remove_if.\n>> + *\n>> + * \\return An ASCII string\n\nthrowing out the bikeshed now I've seen it in use:\n\nHow about calling this toAscii?\n\nstripUnicode()\ntoAscii()\n\n5 chars shorter, and follows the toString toXXX model we have elsewhere?\n\n>> + */\n>> +std::string stripUnicode(const std::string &str)\n>> +{\n>> +\tstd::string ret;\n>> +\tfor (const char &c : str)\n>> +\t\tif (!(c & 0x80))\n>> +\t\t\tret += c;\n> \n> Should we replace non-ascii characters with a replacement such as '_'?\n> \n> Although the name is 'strip' so that does imply we want to remove them.\n> \n> Also should std::isprint() be used? I presume we want to remove all\n> non-printable chars - i.e. anything that's not valid for display?\n> \n> \n>> +\treturn ret;\n>> +}\n>> +\n>> /**\n>> * \\brief Check if libcamera is installed or not\n>> *\n>>\n>","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 2A94CBD87D\n\tfor ;\n\tThu, 13 Aug 2020 15:42:58 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id A318D613A9;\n\tThu, 13 Aug 2020 17:42:57 +0200 (CEST)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 534E76038C\n\tfor ;\n\tThu, 13 Aug 2020 17:42:55 +0200 (CEST)","from [192.168.0.20]\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 917AC80C;\n\tThu, 13 Aug 2020 17:42:54 +0200 (CEST)"],"Authentication-Results":"lancelot.ideasonboard.com;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"sFeK1GaJ\"; 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Linux x86_64; rv:68.0) Gecko/20100101\n\tThunderbird/68.10.0","MIME-Version":"1.0","In-Reply-To":"","Content-Language":"en-GB","Subject":"Re: [libcamera-devel] [PATCH v3 2/7] libcamera: utils: Add method\n\tto strip Unicode characters","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","Reply-To":"kieran.bingham@ideasonboard.com","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"base64","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "}}]