litehtml - lightweight html renderer

1 files changed, 86 insertions, 0 deletions

diff --git a/libs/litehtml/src/url_path.cpp b/libs/litehtml/src/url_path.cpp
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+++ b/libs/litehtml/src/url_path.cpp
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+// Copyright (C) 2020-2021 Primate Labs Inc.
+// All rights reserved.
+//
+// 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.
+//    * Neither the names of the copyright holders nor the names of their
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// 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 COPYRIGHT
+// OWNER 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 "url_path.h"
+
+namespace litehtml {
+
+bool is_url_path_absolute(const string& path)
+{
+    return path.length() > 0 && path[0] == '/';
+}
+
+string url_path_directory_name(const string& path)
+{
+    size_t offset = path.find_last_of('/');
+    if (offset == string::npos) {
+        return ".";
+    } else {
+        return path.substr(0, offset + 1);
+    }
+}
+
+string url_path_base_name(const string& path)
+{
+    size_t offset = path.find_last_of('/');
+    if (offset == string::npos) {
+        return path;
+    } else {
+        return path.substr(offset + 1);
+    }
+}
+
+string url_path_append(const string& base, const string& path)
+{
+    string result(base);
+
+    // Only append a separator if both base and path are not empty and if the
+    // last character of base is not already a separator.
+    if (!result.empty() && !path.empty() && result.back() != '/') {
+        result.append(1, '/');
+    }
+
+    result.append(path);
+
+    return result;
+}
+
+string url_path_resolve(const string& base, const string& path)
+{
+
+    // If the possibly relative path is an absolute path then it is not
+    // relative and the base path is irrelevant.
+    if (is_url_path_absolute(path)) {
+        return path;
+    }
+
+    return url_path_append(url_path_directory_name(base), path);
+}
+
+} // namespace litehtml