imported wrapper class for url parsing

Author: andreagilardoni

src/URLParser.h

@@ -0,0 +1,94 @@
+/*
+ * PackageLicenseDeclared: Apache-2.0
+ * Copyright (c) 2017 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _MBED_HTTP_PARSED_URL_H_
+#define _MBED_HTTP_PARSED_URL_H_
+
+#include "utility/http_parser.h"
+
+class ParsedUrl {
+public:
+    ParsedUrl(const char* url) {
+        struct http_parser_url parsed_url;
+        http_parser_parse_url(url, strlen(url), false, &parsed_url);
+
+        for (size_t ix = 0; ix < UF_MAX; ix++) {
+            char* value;
+            if (parsed_url.field_set & (1 << ix)) {
+                value = (char*)calloc(parsed_url.field_data[ix].len + 1, 1);
+                memcpy(value, url + parsed_url.field_data[ix].off,
+                       parsed_url.field_data[ix].len);
+            }
+            else {
+                value = (char*)calloc(1, 1);
+            }
+
+            switch ((http_parser_url_fields)ix) {
+                case UF_SCHEMA:   _schema   = value; break;
+                case UF_HOST:     _host     = value; break;
+                case UF_PATH:     _path     = value; break;
+                case UF_QUERY:    _query    = value; break;
+                case UF_USERINFO: _userinfo = value; break;
+                default:
+                    // PORT is already parsed, FRAGMENT is not relevant for HTTP requests
+                    free(value);
+                    break;
+            }
+        }
+
+        _port = parsed_url.port;
+        if (!_port) {
+            if (strcmp(_schema, "https") == 0 || strcmp(_schema, "wss") == 0) {
+                _port = 443;
+            }
+            else {
+                _port = 80;
+            }
+        }
+
+        if (strcmp(_path, "") == 0) {
+            free(_path);
+            _path = (char*)calloc(2, 1);
+            _path[0] = '/';
+        }
+    }
+
+    ~ParsedUrl() {
+        if (_schema) free(_schema);
+        if (_host) free(_host);
+        if (_path) free(_path);
+        if (_query) free(_query);
+        if (_userinfo) free(_userinfo);
+    }
+
+    uint16_t port() const { return _port; }
+    char* schema() const { return _schema; }
+    char* host() const { return _host; }
+    char* path() const { return _path; }
+    char* query() const { return _query; }
+    char* userinfo() const { return _userinfo; }
+
+private:
+    uint16_t _port;
+    char* _schema;
+    char* _host;
+    char* _path;
+    char* _query;
+    char* _userinfo;
+};
+
+#endif // _MBED_HTTP_PARSED_URL_H_