Add Uri with support for regexUri and globUri (#3441)

* Add Uri with support for staticUri, regexUri and globUri

* Add newline to end of files

* Update example

* Suppress gcc warnings (unused params)

libraries/WebServer/src/uri/UriBraces.h

@@ -0,0 +1,66 @@
+#ifndef URI_BRACES_H
+#define URI_BRACES_H
+
+#include "Uri.h"
+
+class UriBraces : public Uri {
+
+    public:
+        explicit UriBraces(const char *uri) : Uri(uri) {};
+        explicit UriBraces(const String &uri) : Uri(uri) {};
+
+        Uri* clone() const override final {
+            return new UriBraces(_uri);
+        };
+
+        void initPathArgs(std::vector<String> &pathArgs) override final {
+            int numParams = 0, start = 0;
+            do {
+                start = _uri.indexOf("{}", start);
+                if (start > 0) {
+                    numParams++;
+                    start += 2;
+                }
+            } while (start > 0);
+            pathArgs.resize(numParams);
+        }
+
+        bool canHandle(const String &requestUri, std::vector<String> &pathArgs) override final {
+            if (Uri::canHandle(requestUri, pathArgs))
+                return true;
+
+            size_t uriLength = _uri.length();
+            unsigned int pathArgIndex = 0;
+            unsigned int requestUriIndex = 0;
+            for (unsigned int i = 0; i < uriLength; i++, requestUriIndex++) {
+                char uriChar = _uri[i];
+                char requestUriChar = requestUri[requestUriIndex];
+
+                if (uriChar == requestUriChar)
+                    continue;
+                if (uriChar != '{')
+                    return false;
+
+                i += 2; // index of char after '}'
+                if (i >= uriLength) {
+                    // there is no char after '}'
+                    pathArgs[pathArgIndex] = requestUri.substring(requestUriIndex);
+                    return pathArgs[pathArgIndex].indexOf("/") == -1; // path argument may not contain a '/'
+                }
+                else
+                {
+                    char charEnd = _uri[i];
+                    int uriIndex = requestUri.indexOf(charEnd, requestUriIndex);
+                    if (uriIndex < 0)
+                        return false;
+                    pathArgs[pathArgIndex] = requestUri.substring(requestUriIndex, uriIndex);
+                    requestUriIndex = (unsigned int) uriIndex;
+                }
+                pathArgIndex++;
+            }
+
+            return requestUriIndex >= requestUri.length();
+        }
+};
+
+#endif

libraries/WebServer/src/uri/UriGlob.h

@@ -0,0 +1,22 @@
+#ifndef URI_GLOB_H
+#define URI_GLOB_H
+
+#include "Uri.h"
+#include <fnmatch.h>
+
+class UriGlob : public Uri {
+
+    public:
+        explicit UriGlob(const char *uri) : Uri(uri) {};
+        explicit UriGlob(const String &uri) : Uri(uri) {};
+
+        Uri* clone() const override final {
+            return new UriGlob(_uri);
+        };
+
+        bool canHandle(const String &requestUri, __attribute__((unused)) std::vector<String> &pathArgs) override final {
+            return fnmatch(_uri.c_str(), requestUri.c_str(), 0) == 0;
+        }
+};
+
+#endif

libraries/WebServer/src/uri/UriRegex.h

@@ -0,0 +1,44 @@
+#ifndef URI_REGEX_H
+#define URI_REGEX_H
+
+#include "Uri.h"
+#include <regex>
+
+class UriRegex : public Uri {
+
+    public:
+        explicit UriRegex(const char *uri) : Uri(uri) {};
+        explicit UriRegex(const String &uri) : Uri(uri) {};
+
+        Uri* clone() const override final {
+            return new UriRegex(_uri);
+        };
+
+        void initPathArgs(std::vector<String> &pathArgs) override final {
+            std::regex rgx((_uri + "|").c_str());
+            std::smatch matches;
+            std::string s{""};
+            std::regex_search(s, matches, rgx);
+            pathArgs.resize(matches.size() - 1);
+        }
+
+        bool canHandle(const String &requestUri, std::vector<String> &pathArgs) override final {
+            if (Uri::canHandle(requestUri, pathArgs))
+                return true;
+
+            unsigned int pathArgIndex = 0;
+            std::regex rgx(_uri.c_str());
+            std::smatch matches;
+            std::string s(requestUri.c_str());
+            if (std::regex_search(s, matches, rgx)) {
+                for (size_t i = 1; i < matches.size(); ++i) {  // skip first
+                    pathArgs[pathArgIndex] = String(matches[i].str().c_str());
+                    pathArgIndex++;
+                }
+                return true;
+            }
+            return false;
+        }
+};
+
+#endif