From 3cad68be13f0126427f63d73507d227f5278a4c3 Mon Sep 17 00:00:00 2001
From: Leon Styhre <leon@leonstyhre.com>
Date: Fri, 10 Jul 2020 19:53:33 +0200
Subject: [PATCH] Added %EMUPATH% logic for Unix.

---
 es-app/src/FileData.cpp              |  4 +++-
 es-core/src/utils/FileSystemUtil.cpp | 20 ++++++++++++++++++++
 es-core/src/utils/FileSystemUtil.h   |  1 +
 3 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/es-app/src/FileData.cpp b/es-app/src/FileData.cpp
index f6df6cc25..1f4c777ff 100644
--- a/es-app/src/FileData.cpp
+++ b/es-app/src/FileData.cpp
@@ -24,6 +24,7 @@
 #include "Window.h"
 
 #include <assert.h>
+#include <filesystem>
 
 FileData::FileData(
         FileType type,
@@ -516,7 +517,8 @@ void FileData::launchGame(Window* window)
             }
         }
         #else
-        // TODO for Unix.
+        std::string exePath = Utils::FileSystem::getPathToBinary(emuExecutable);
+        command = Utils::String::replace(command, "%EMUPATH%", exePath);
         #endif
     }
 
diff --git a/es-core/src/utils/FileSystemUtil.cpp b/es-core/src/utils/FileSystemUtil.cpp
index c51ff22d9..43ec6859a 100644
--- a/es-core/src/utils/FileSystemUtil.cpp
+++ b/es-core/src/utils/FileSystemUtil.cpp
@@ -176,6 +176,26 @@ namespace Utils
             #endif
         }
 
+        std::string getPathToBinary(const std::string& executable)
+        {
+            #ifdef _WIN64
+            return "";
+            #else
+            std::string pathVariable = std::string(getenv("PATH"));
+            std::vector<std::string> pathList =
+                    Utils::String::delimitedStringToVector(pathVariable, ":");
+
+            std::string pathTest;
+
+            for (auto it = pathList.cbegin(); it != pathList.cend(); it++) {
+                pathTest = it->c_str() + ("/" + executable);
+                if (exists(pathTest))
+                    return it->c_str();
+            }
+            return "";
+            #endif
+        }
+
         void setExePath(const std::string& _path)
         {
             constexpr int path_max = 32767;
diff --git a/es-core/src/utils/FileSystemUtil.h b/es-core/src/utils/FileSystemUtil.h
index 3958e2e16..0ed6aa91a 100644
--- a/es-core/src/utils/FileSystemUtil.h
+++ b/es-core/src/utils/FileSystemUtil.h
@@ -25,6 +25,7 @@ namespace Utils
         void setHomePath(const std::string& _path);
         std::string getHomePath();
         std::string getCWDPath();
+        std::string getPathToBinary(const std::string& executable);
         void setExePath(const std::string& _path);
         std::string getExePath();
         std::string getProgramDataPath();