curl_container: allow calling GetContent without CurlHolder

This can be relevant when the parameters need to be passed to some
different library (i.e. libmpv, gstreamer) and there is no cpr::Session
to get a CurlHolder from.

Signed-off-by: Sebastian Muxel <sebastian@muxel.dev>

Author: muxelplexer

cpr/curl_container.cpp

@@ -40,6 +40,25 @@ const std::string CurlContainer<Parameter>::GetContent(const CurlHolder& holder)
     return content;
 }
 
+template <>
+const std::string CurlContainer<Parameter>::GetContent() const {
+    std::string content{};
+    for (const Parameter& parameter : containerList_) {
+        if (!content.empty()) {
+            content += "&";
+        }
+
+        if (parameter.value.empty()) {
+            content += parameter.key;
+        } else {
+            content += parameter.key + "=";
+            content += parameter.value;
+        }
+    }
+
+    return content;
+}
+
 template <>
 const std::string CurlContainer<Pair>::GetContent(const CurlHolder& holder) const {
     std::string content{};
@@ -54,6 +73,19 @@ const std::string CurlContainer<Pair>::GetContent(const CurlHolder& holder) cons
     return content;
 }
 
+template <>
+const std::string CurlContainer<Pair>::GetContent() const {
+    std::string content{};
+    for (const cpr::Pair& element : containerList_) {
+        if (!content.empty()) {
+            content += "&";
+        }
+        content += element.key + "=" + element.value;
+    }
+
+    return content;
+}
+
 template class CurlContainer<Pair>;
 template class CurlContainer<Parameter>;
 

include/cpr/curl_container.h

@@ -42,6 +42,12 @@ class CurlContainer {
 
     const std::string GetContent(const CurlHolder&) const;
 
+    /**
+     * Returns the URL while ignoring `encode`. This allows calling without
+     * active `CurlHolder`.
+     **/
+    const std::string GetContent() const;
+
   protected:
     std::vector<T> containerList_;
 };