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diff --git a/src/config/config.cpp b/src/config/config.cpp
index 4deede6..37b7c6e 100644
--- a/src/config/config.cpp
+++ b/src/config/config.cpp
@@ -5,10 +5,10 @@
 #include <toml++/impl/parser.hpp>
 #include <toml++/toml.hpp>
 
-Config get_config(const std::string &CONFIG_FILE) {
+Config get_config(const std::string &CONFIGURATION) {
   toml::table toml_table;
   try {
-    toml_table = toml::parse_file(CONFIG_FILE);
+    toml_table = toml::parse(CONFIGURATION);
   } catch (const toml::parse_error &err) {
     std::cerr << "Parsing failed:" << std::endl << err << std::endl;
   }
diff --git a/src/config/config.hpp b/src/config/config.hpp
index 30e25ee..1c40f89 100644
--- a/src/config/config.hpp
+++ b/src/config/config.hpp
@@ -17,4 +17,7 @@ struct Config {
   General general;
 };
 
-Config get_config(const std::string &CONFIG_FILE);
+// @brief Load config into `Config` struct
+// @param CONFIGURATION content of `.toml` file containing configuration
+// @return Config with parsed configuration
+Config get_config(const std::string &CONFIGURATION);
diff --git a/src/format/format.cpp b/src/format/format.cpp
index 5bf4f23..68516de 100644
--- a/src/format/format.cpp
+++ b/src/format/format.cpp
@@ -1,6 +1,4 @@
 #include "markdown/markdown.hpp"
-#include <fstream>
-#include <sstream>
 #include <string>
 
 static bool replace_once(std::string &str, const std::string &from,
@@ -11,20 +9,3 @@ static bool replace_once(std::string &str, const std::string &from,
   str.replace(start_pos, from.length(), to);
   return true;
 }
-
-std::string inject_html_into_template(const std::string &FILE_NAME,
-                                      const std::string &TEMPLATE,
-                                      const std::string &HTML) {
-  std::string result;
-  std::ifstream file(FILE_NAME);
-  if (!file.is_open()) {
-    return "";
-  }
-  std::ostringstream ss;
-  ss << file.rdbuf();
-  result = ss.str();
-  if (replace_once(result, TEMPLATE, HTML)) {
-    return result;
-  }
-  return "";
-}
diff --git a/src/markdown/markdown.cpp b/src/markdown/markdown.cpp
index 34bf0c5..81790c5 100644
--- a/src/markdown/markdown.cpp
+++ b/src/markdown/markdown.cpp
@@ -1,6 +1,5 @@
 #include "markdown.hpp"
 #include <ctime>
-#include <fstream>
 #include <iostream>
 #include <map>
 #include <md4c-html.h>
@@ -8,21 +7,21 @@
 #include <sstream>
 #include <toml++/toml.hpp>
 
-std::optional<Metadata> get_metadata(const std::string &FILE_PATH) {
-  std::fstream file(FILE_PATH);
+std::optional<Metadata> get_metadata(const std::string &FILE_CONTENTS) {
+  std::stringstream file_contents(FILE_CONTENTS);
   std::stringstream metadata_s;
   std::string buffer;
 
   /* if there's no ---, then no metadata in file there is */
-  if (!getline(file, buffer) || buffer != "---") {
-    std::cerr << "File " << FILE_PATH << " does not contain metadata. "
+  if (!getline(file_contents, buffer) || buffer != "---") {
+    std::clog << "File does not contain any metadata. Is this intentional?"
               << std::endl;
     return std::nullopt;
   }
 
   std::map<std::string, std::string> metadata_map;
 
-  while (getline(file, buffer)) {
+  while (getline(file_contents, buffer)) {
     if (buffer == "---") {
       break;
     }
@@ -69,15 +68,15 @@ static void html_callback(const MD_CHAR *data, MD_SIZE size, void *userdata) {
   out->append(data, size);
 }
 
-std::string get_html(const std::string &FILE_PATH) {
-  std::fstream file(FILE_PATH);
+std::string get_html(const std::string &FILE_CONTENTS) {
+  std::stringstream file_contents(FILE_CONTENTS);
   std::string buffer, file_string, out;
-  getline(file, buffer);
+  getline(file_contents, buffer);
   bool is_metadata = buffer == "---";
 
   /* skip metadata */
   if (is_metadata) {
-    while (getline(file, buffer)) {
+    while (getline(file_contents, buffer)) {
       if (buffer == "---") {
         break;
       }
@@ -86,7 +85,7 @@ std::string get_html(const std::string &FILE_PATH) {
     file_string += buffer + '\n';
   }
 
-  while (getline(file, buffer)) {
+  while (getline(file_contents, buffer)) {
     file_string += buffer + '\n';
   }