From 88f7aa611560ba938e7f10e451295f30058cdce6 Mon Sep 17 00:00:00 2001
From: Tyler Perkins <tperki17@kent.edu>
Date: Thu, 28 Apr 2022 21:32:07 -0400
Subject: [PATCH] Add /proc/meminfo json functionality

---
 src/components/memory.cpp | 30 ++++++++++++++++++++++++++++++
 src/components/memory.hpp | 17 +++++++++++++++++
 src/routes.cpp            |  5 ++++-
 src/routes.hpp            |  2 ++
 4 files changed, 53 insertions(+), 1 deletion(-)
 create mode 100644 src/components/memory.cpp
 create mode 100644 src/components/memory.hpp

diff --git a/src/components/memory.cpp b/src/components/memory.cpp
new file mode 100644
index 0000000..f8eb5b6
--- /dev/null
+++ b/src/components/memory.cpp
@@ -0,0 +1,30 @@
+///////////////////////////////////////////////////////////////////////////////
+// Tyler Perkins
+// 28-4-22
+// memory functions implementation
+//
+
+#include "memory.hpp"
+
+void memory::getProcMem(crow::json::wvalue& ret){
+    std::ifstream f ("/proc/meminfo");
+    std::string line;
+    if(f.is_open()){
+        while(std::getline(f, line)){
+            size_t colon;
+            int last_space = -1;
+            for(int i = 0; line[i] != '\0' ; ++i){
+                if(line[i] == ':')
+                    colon = i;
+                else if(line[i-1] == ' ' && line[i] != ' ' && last_space == -1)
+                    last_space = i;
+            }
+
+            std::cerr << colon << " " << last_space << std::endl;
+
+            ret[line.substr(0,colon)] = line.substr(last_space);
+        }
+    } else {
+        ret["message"] = "Failed to open proc filesystem";
+    }
+}
diff --git a/src/components/memory.hpp b/src/components/memory.hpp
new file mode 100644
index 0000000..a452830
--- /dev/null
+++ b/src/components/memory.hpp
@@ -0,0 +1,17 @@
+///////////////////////////////////////////////////////////////////////////////
+// Tyler Perkins
+// 28-4-22
+// memory functions defintion
+//
+
+#pragma once
+
+#include <crow.h>
+
+#include <string>
+#include <fstream>
+
+namespace memory{
+    void getProcMem(crow::json::wvalue&);
+    void getEasyMem(crow::json::wvalue&);
+}
diff --git a/src/routes.cpp b/src/routes.cpp
index 74dbbc0..b6758d1 100644
--- a/src/routes.cpp
+++ b/src/routes.cpp
@@ -8,7 +8,10 @@
 
 void setRoutes(crow::SimpleApp& app){
     CROW_ROUTE(app, "/proc/meminfo")([]{
-        return "Meminfo";
+        crow::json::wvalue json;
+        memory::getProcMem(json);
+
+        return json;
     });
 
     CROW_ROUTE(app, "/mem")([]{
diff --git a/src/routes.hpp b/src/routes.hpp
index 453f796..b6d1003 100644
--- a/src/routes.hpp
+++ b/src/routes.hpp
@@ -6,6 +6,8 @@
 
 #pragma once
 
+
 #include <crow.h>
+#include "components/memory.hpp"
 
 void setRoutes(crow::SimpleApp&);