storage/curl: move code to EscapeUriPath()

src/lib/curl/Escape.cxx

+/*
+ * Copyright (C) 2018 Max Kellermann <max.kellermann@gmail.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "Escape.hxx"
+#include "Easy.hxx"
+#include "String.hxx"
+#include "util/IterableSplitString.hxx"
+
+std::string
+CurlEscapeUriPath(CURL *curl, StringView src) noexcept
+{
+	std::string dest;
+
+	for (const auto i : IterableSplitString(src, '/')) {
+		CurlString escaped(curl_easy_escape(curl, i.data, i.size));
+		if (!dest.empty())
+			dest.push_back('/');
+		dest += escaped.c_str();
+	}
+
+	return dest;
+}
+
+std::string
+CurlEscapeUriPath(StringView src) noexcept
+{
+	CurlEasy easy;
+	return CurlEscapeUriPath(easy.Get(), src);
+}

src/lib/curl/Escape.hxx

+/*
+ * Copyright (C) 2018 Max Kellermann <max.kellermann@gmail.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef CURL_ESCAPE_HXX
+#define CURL_ESCAPE_HXX
+
+#include <curl/curl.h>
+
+#include <string>
+
+struct StringView;
+
+std::string
+CurlEscapeUriPath(CURL *curl, StringView src) noexcept;
+
+std::string
+CurlEscapeUriPath(StringView src) noexcept;
+
+#endif

src/lib/curl/meson.build

@@ -11,6 +11,7 @@ curl = static_library(
   'Init.cxx',
   'Global.cxx',
   'Request.cxx',
+  'Escape.cxx',
   'Form.cxx',
   include_directories: inc,
   dependencies: [

src/storage/plugins/CurlStorage.cxx

@@ -28,6 +28,7 @@
 #include "lib/curl/String.hxx"
 #include "lib/curl/Request.hxx"
 #include "lib/curl/Handler.hxx"
+#include "lib/curl/Escape.hxx"
 #include "lib/expat/ExpatParser.hxx"
 #include "fs/Traits.hxx"
 #include "event/Call.hxx"
@@ -36,7 +37,6 @@
 #include "thread/Cond.hxx"
 #include "util/ASCII.hxx"
 #include "util/ChronoUtil.hxx"
-#include "util/IterableSplitString.hxx"
 #include "util/RuntimeError.hxx"
 #include "util/StringCompare.hxx"
 #include "util/StringFormat.hxx"
@@ -78,16 +78,7 @@ CurlStorage::MapUTF8(const char *uri_utf8) const noexcept
 	if (StringIsEmpty(uri_utf8))
 		return base;
 
-	CurlEasy easy;
-	std::string path_esc;
-
-	for (auto elt: IterableSplitString(uri_utf8, '/')) {
-		const auto elt_esc = easy.Escape(elt.data, elt.size);
-		if (!path_esc.empty())
-			path_esc.push_back('/');
-		path_esc += elt_esc.c_str();
-	}
-
+	std::string path_esc = CurlEscapeUriPath(uri_utf8);
 	return PathTraitsUTF8::Build(base.c_str(), path_esc.c_str());
 }