{"id":3086,"url":"https://patchwork.libcamera.org/api/patches/3086/?format=json","web_url":"https://patchwork.libcamera.org/patch/3086/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/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":"<20200313233856.25202-3-laurent.pinchart@ideasonboard.com>","date":"2020-03-13T23:38:50","name":"[libcamera-devel,2/8] libcamera: utils: Add string join function","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"23aa4f8a18cfb59774bf392f8d2dfc45b87103b4","submitter":{"id":2,"url":"https://patchwork.libcamera.org/api/people/2/?format=json","name":"Laurent Pinchart","email":"laurent.pinchart@ideasonboard.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/3086/mbox/","series":[{"id":718,"url":"https://patchwork.libcamera.org/api/series/718/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=718","date":"2020-03-13T23:38:48","name":"Simple pipeline handler","version":1,"mbox":"https://patchwork.libcamera.org/series/718/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/3086/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/3086/checks/","tags":{},"headers":{"Return-Path":"","Received":["from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 0CB4C62930\n\tfor ;\n\tSat, 14 Mar 2020 00:39:06 +0100 (CET)","from pendragon.bb.dnainternet.fi (81-175-216-236.bb.dnainternet.fi\n\t[81.175.216.236])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 6779A1367;\n\tSat, 14 Mar 2020 00:39:05 +0100 (CET)"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1584142745;\n\tbh=J0c2nfJFXlI6E4sVzYJWTGJhC6/tlaySqex0A1Ia7Ck=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=s0n9IkkV33XCJVAO1ILOQXCMuAQylc1h1Ve11XwYrel0LH1twyzBZazuvZlkp7ia7\n\tNdhuo9vp4F9HL83WfksGWRNVRKO4nQEUjW5+dA4lqLxDtcrIXgjI/1IxzKoHsz+zri\n\tNATDfg+eDPHW+O6VI24f9s7BmXH8QPLx5y6Fgu/g=","From":"Laurent Pinchart ","To":"libcamera-devel@lists.libcamera.org","Cc":"Martijn Braam ,\n\tAndrey Konovalov ,\n\tMickael GUENE ,\n\tBenjamin GAIGNARD ","Date":"Sat, 14 Mar 2020 01:38:50 +0200","Message-Id":"<20200313233856.25202-3-laurent.pinchart@ideasonboard.com>","X-Mailer":"git-send-email 2.24.1","In-Reply-To":"<20200313233856.25202-1-laurent.pinchart@ideasonboard.com>","References":"<20200313233856.25202-1-laurent.pinchart@ideasonboard.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH 2/8] libcamera: utils: Add string join\n\tfunction","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","X-List-Received-Date":"Fri, 13 Mar 2020 23:39:06 -0000"},"content":"Add a utils::join() function to join elements of a container into a\nstring, with a separator and an optional conversion function if the\nelements are not implicitly convertible to std::string.\n\nSigned-off-by: Laurent Pinchart \n---\n src/libcamera/include/utils.h | 44 +++++++++++++++++++++++++++++++++++\n src/libcamera/utils.cpp | 16 +++++++++++++\n test/utils.cpp | 7 +++++-\n 3 files changed, 66 insertions(+), 1 deletion(-)","diff":"diff --git a/src/libcamera/include/utils.h b/src/libcamera/include/utils.h\nindex 940597760ee2..74ceed760cb3 100644\n--- a/src/libcamera/include/utils.h\n+++ b/src/libcamera/include/utils.h\n@@ -11,6 +11,7 @@\n #include \n #include \n #include \n+#include \n #include \n #include \n #include \n@@ -109,6 +110,49 @@ inline _hex hex(uint64_t value, unsigned int width)\n \n size_t strlcpy(char *dst, const char *src, size_t size);\n \n+#ifndef __DOXYGEN__\n+template\n+std::string join(const Container &items, const std::string &sep, UnaryOp op)\n+{\n+\tstd::ostringstream ss;\n+\tbool first = true;\n+\n+\tfor (typename Container::const_iterator it = std::begin(items);\n+\t it != std::end(items); ++it) {\n+\t\tif (!first)\n+\t\t\tss << sep;\n+\t\telse\n+\t\t\tfirst = false;\n+\n+\t\tss << op(*it);\n+\t}\n+\n+\treturn ss.str();\n+}\n+\n+template\n+std::string join(const Container &items, const std::string &sep)\n+{\n+\tstd::ostringstream ss;\n+\tbool first = true;\n+\n+\tfor (typename Container::const_iterator it = std::begin(items);\n+\t it != std::end(items); ++it) {\n+\t\tif (!first)\n+\t\t\tss << sep;\n+\t\telse\n+\t\t\tfirst = false;\n+\n+\t\tss << *it;\n+\t}\n+\n+\treturn ss.str();\n+}\n+#else\n+template\n+std::string join(const Container &items, const std::string &sep, UnaryOp op = nullptr);\n+#endif\n+\n namespace details {\n \n class StringSplitter\ndiff --git a/src/libcamera/utils.cpp b/src/libcamera/utils.cpp\nindex f566e88cec5b..1d0e583756cf 100644\n--- a/src/libcamera/utils.cpp\n+++ b/src/libcamera/utils.cpp\n@@ -291,6 +291,22 @@ details::StringSplitter::iterator details::StringSplitter::end() const\n \treturn iterator(this, std::string::npos);\n }\n \n+/**\n+ * \\fn template \\\n+ * std::string utils::join(const Container &items, const std::string &sep, UnaryOp op)\n+ * \\brief Join elements of a container in a string with a separator\n+ * \\param[in] items The container\n+ * \\param[in] sep The separator to add between elements\n+ * \\param[in] op A function that converts individual elements to strings\n+ *\n+ * This function joins all elements in the \\a items container into a string and\n+ * returns it. The \\a sep separator is added between elements. If the container\n+ * elements are not implicitly convertible to std::string, the \\a op function\n+ * shall be provided to perform conversion of elements to std::string.\n+ *\n+ * \\return A string that concatenates all elements in the container\n+ */\n+\n /**\n * \\fn split(const std::string &str, const std::string &delim)\n * \\brief Split a string based on a delimiter\ndiff --git a/test/utils.cpp b/test/utils.cpp\nindex 58816f153066..2fca89ef3278 100644\n--- a/test/utils.cpp\n+++ b/test/utils.cpp\n@@ -99,7 +99,7 @@ protected:\n \t\t\treturn TestFail;\n \t\t}\n \n-\t\t/* utils::split() test. */\n+\t\t/* utils::join() and utils::split() test. */\n \t\tstd::vector elements = {\n \t\t\t\"/bin\",\n \t\t\t\"/usr/bin\",\n@@ -111,6 +111,11 @@ protected:\n \t\tfor (const auto &element : elements)\n \t\t\tpath += (path.empty() ? \"\" : \":\") + element;\n \n+\t\tif (path != utils::join(elements, \":\")) {\n+\t\t\tcerr << \"utils::join() test failed\" << endl;\n+\t\t\treturn TestFail;\n+\t\t}\n+\n \t\tstd::vector dirs;\n \n \t\tfor (const auto &dir : utils::split(path, \":\"))\n","prefixes":["libcamera-devel","2/8"]}