parse cache-control and last-modified headers

src/platform/response.cpp

@@ -0,0 +1,26 @@
+#include <mbgl/platform/response.hpp>
+#include <curl/curl.h>
+
+#include <cstdio>
+
+namespace mbgl {
+namespace platform {
+
+
+void Response::setCacheControl(const char *value) {
+    int seconds = 0;
+    // TODO: cache-control may contain other information as well:
+    // http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9
+    if (std::sscanf(value, "max-age=%u", &seconds) == 1) {
+        if (std::time(&expires) != -1) {
+            expires += seconds;
+        }
+    }
+}
+
+void Response::setLastModified(const char *value) {
+    modified = curl_getdate(value, nullptr);
+}
+
+}
+}