Split src/common/* into headers and definitions

meson.build

@@ -31,6 +31,8 @@ include_dir = include_directories('src/include')
 shared_library(
   'yabridge',
   [
+    'src/common/communication.cpp',
+    'src/common/logging.cpp',
     'src/plugin/host-bridge.cpp',
     'src/plugin/plugin.cpp',
   ],
@@ -43,6 +45,8 @@ shared_library(
 executable(
   'yabridge-host',
   [
+    'src/common/communication.cpp',
+    'src/common/logging.cpp',
     'src/wine-host/plugin-bridge.cpp',
     'src/wine-host/vst-host.cpp',
   ],

src/common/communication.cpp

@@ -0,0 +1,30 @@
+#include "communication.h"
+
+intptr_t send_event(boost::asio::local::stream_protocol::socket& socket,
+                    int32_t opcode,
+                    int32_t index,
+                    intptr_t value,
+                    void* data,
+                    float option) {
+    auto payload =
+        data == nullptr
+            ? std::nullopt
+            : std::make_optional(std::string(static_cast<char*>(data)));
+
+    const Event event{opcode, index, value, option, payload};
+    write_object(socket, event);
+
+    const auto response = read_object<EventResult>(socket);
+    if (response.data.has_value()) {
+        char* char_data = static_cast<char*>(data);
+
+        // For correctness we will copy the entire buffer and add a terminating
+        // null byte ourselves. In practice `response.data` will only ever
+        // contain C-style strings, but this would work with any other data
+        // format that can contain null bytes.
+        std::copy(response.data->begin(), response.data->end(), char_data);
+        char_data[response.data->size()] = 0;
+    }
+
+    return response.return_value;
+}

src/common/communication.h

@@ -24,15 +24,15 @@
 #include <bitsery/traits/vector.h>
 #include <vestige/aeffect.h>
 
-#ifdef __WINE__
-#include "../wine-host/boost-fix.h"
-#endif
-#include <boost/asio/buffer.hpp>
-#include <boost/asio/local/stream_protocol.hpp>
 #include <cinttypes>
 #include <iostream>
 #include <optional>
 
+#ifdef __WINE__
+#include "../wine-host/boost-fix.h"
+#endif
+#include <boost/asio/local/stream_protocol.hpp>
+
 // These are for the serialization done by bitsery
 
 /**
@@ -305,34 +305,12 @@ inline T read_object(Socket& socket) {
  *
  * @relates passthrough_event
  */
-inline intptr_t send_event(boost::asio::local::stream_protocol::socket& socket,
-                           int32_t opcode,
-                           int32_t index,
-                           intptr_t value,
-                           void* data,
-                           float option) {
-    auto payload =
-        data == nullptr
-            ? std::nullopt
-            : std::make_optional(std::string(static_cast<char*>(data)));
-
-    const Event event{opcode, index, value, option, payload};
-    write_object(socket, event);
-
-    const auto response = read_object<EventResult>(socket);
-    if (response.data.has_value()) {
-        char* char_data = static_cast<char*>(data);
-
-        // For correctness we will copy the entire buffer and add a terminating
-        // null byte ourselves. In practice `response.data` will only ever
-        // contain C-style strings, but this would work with any other data
-        // format that can contain null bytes.
-        std::copy(response.data->begin(), response.data->end(), char_data);
-        char_data[response.data->size()] = 0;
-    }
-
-    return response.return_value;
-}
+intptr_t send_event(boost::asio::local::stream_protocol::socket& socket,
+                    int32_t opcode,
+                    int32_t index,
+                    intptr_t value,
+                    void* data,
+                    float option);
 
 /**
  * Receive an event from a socket and pass it through to some callback function.

src/common/logging.cpp

@@ -0,0 +1,54 @@
+#include "logging.h"
+
+#include <fstream>
+#include <iostream>
+
+#ifdef __WINE__
+#include "../wine-host/boost-fix.h"
+#endif
+#include <boost/process/environment.hpp>
+
+/**
+ * The environment variable indicating whether to log to a file. Will log to
+ * STDERR if not specified.
+ */
+constexpr char logging_file_environment_variable[] = "YABRIDGE_DEBUG_FILE";
+
+/**
+ * The verbosity of the logging, defaults to `Logger::Verbosity::events` if
+ * `logging_file_environment_variable` has been set and
+ * `Logger::Verbosity::basic` otherwise.
+ *
+ * @see Logger::Verbosity
+ */
+constexpr char logging_verbosity_environment_variable[] =
+    "YABRIDGE_DEBUG_VERBOSITY";
+
+Logger::Logger(std::ostream&& stream,
+               Verbosity verbosity_level,
+               std::string prefix)
+    : stream(stream), verbosity(verbosity_level), prefix(prefix) {}
+
+Logger Logger::create_from_environment(std::string prefix) {
+    auto env = boost::this_process::environment();
+    std::string file_path = env.get(logging_file_environment_variable);
+    std::string verbosity = env.get(logging_verbosity_environment_variable);
+
+    // Default to `Verbosity::basic` if the environment variable has not
+    // been set or if it is not an integer.
+    Verbosity verbosity_level;
+    try {
+        verbosity_level = static_cast<Verbosity>(std::stoi(verbosity));
+    } catch (const std::invalid_argument&) {
+        verbosity_level = Verbosity::basic;
+    }
+
+    // If `file` points to a valid location then use create/truncate the
+    // file and write all of the logs there, otherwise use STDERR
+    std::ofstream log_file(file_path, std::fstream::out);
+    if (log_file.is_open()) {
+        return Logger(std::move(log_file), verbosity_level, prefix);
+    } else {
+        return Logger(std::move(std::cerr), verbosity_level, prefix);
+    }
+}

src/common/logging.h

@@ -16,27 +16,7 @@
 
 #pragma once
 
-#ifdef __WINE__
-#include "../wine-host/boost-fix.h"
-#endif
-#include <boost/process/environment.hpp>
-#include <fstream>
-#include <iostream>
-
-/**
- * The environment variable indicating whether to log to a file. Will log to
- * STDERR if not specified.
- */
-constexpr char logging_file_environment_variable[] = "YABRIDGE_DEBUG_FILE";
-/**
- * The verbosity of the logging, defaults to `Logger::Verbosity::events` if
- * `logging_file_environment_variable` has been set and
- * `Logger::Verbosity::basic` otherwise.
- *
- * @see Logger::Verbosity
- */
-constexpr char logging_verbosity_environment_variable[] =
-    "YABRIDGE_DEBUG_VERBOSITY";
+#include <ostream>
 
 /**
  * Super basic logging facility meant for debugging malfunctioning VST
@@ -85,38 +65,16 @@ class Logger {
      */
     Logger(std::ostream&& stream,
            Verbosity verbosity_level,
-           std::string prefix = "")
-        : stream(stream), verbosity(verbosity_level), prefix(prefix){};
+           std::string prefix = "");
 
     /**
-     * Create a logger instance based on the set environment variables.
+     * Create a logger instance based on the set environment variables. See the
+     * constants in `logging.cpp` for more information.
      *
      * @param prefix A message to prepend for every log message, useful to
      *   differentiate between the Wine process and the Linus VST plugin.
      */
-    static Logger create_from_environment(std::string prefix = "") {
-        auto env = boost::this_process::environment();
-        std::string file_path = env.get(logging_file_environment_variable);
-        std::string verbosity = env.get(logging_verbosity_environment_variable);
-
-        // Default to `Verbosity::basic` if the environment variable has not
-        // been set or if it is not an integer.
-        Verbosity verbosity_level;
-        try {
-            verbosity_level = static_cast<Verbosity>(std::stoi(verbosity));
-        } catch (const std::invalid_argument&) {
-            verbosity_level = Verbosity::basic;
-        }
-
-        // If `file` points to a valid location then use create/truncate the
-        // file and write all of the logs there, otherwise use STDERR
-        std::ofstream log_file(file_path, std::fstream::out);
-        if (log_file.is_open()) {
-            return Logger(std::move(log_file), verbosity_level, prefix);
-        } else {
-            return Logger(std::move(std::cerr), verbosity_level, prefix);
-        }
-    }
+    static Logger create_from_environment(std::string prefix = "");
 
     // TODO: Add dedicated logging functions for events and the Wine process's
     //       STDOUT and STDERR