From d21a114f84965fee605dcd228928f2a04874571a Mon Sep 17 00:00:00 2001
From: Maurice Heumann <mauriceheumann@gmail.com>
Date: Wed, 19 Mar 2025 10:45:49 +0100
Subject: [PATCH] Support path mappings for analysis

---
 src/analyzer/main.cpp                | 15 +++++++++++++++
 src/windows-emulator/file_system.hpp |  2 +-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/analyzer/main.cpp b/src/analyzer/main.cpp
index fca08166..e4e4e070 100644
--- a/src/analyzer/main.cpp
+++ b/src/analyzer/main.cpp
@@ -16,6 +16,7 @@ namespace
         std::string registry_path{"./registry"};
         std::string emulation_root{};
         std::set<std::string, std::less<>> modules{};
+        std::unordered_map<windows_path, std::filesystem::path> path_mappings{};
     };
 
     void watch_system_objects(windows_emulator& win_emu, const std::set<std::string, std::less<>>& modules,
@@ -124,6 +125,7 @@ namespace
             .verbose_calls = options.verbose_logging,
             .disable_logging = options.silent,
             .silent_until_main = options.concise_logging,
+            .path_mappings = options.path_mappings,
             .modules = options.modules,
         };
 
@@ -258,6 +260,19 @@ namespace
                 arg_it = args.erase(arg_it);
                 options.emulation_root = args[0];
             }
+            else if (arg == "-p")
+            {
+                if (args.size() < 3)
+                {
+                    throw std::runtime_error("No path mapping provided after -p");
+                }
+                arg_it = args.erase(arg_it);
+                windows_path source = args[0];
+                arg_it = args.erase(arg_it);
+                std::filesystem::path target = std::filesystem::absolute(args[0]);
+
+                options.path_mappings[std::move(source)] = std::move(target);
+            }
             else if (arg == "-r")
             {
                 if (args.size() < 2)
diff --git a/src/windows-emulator/file_system.hpp b/src/windows-emulator/file_system.hpp
index e39fd320..de5a618b 100644
--- a/src/windows-emulator/file_system.hpp
+++ b/src/windows-emulator/file_system.hpp
@@ -27,7 +27,7 @@ class file_system
     {
         if (!win_path.is_absolute())
         {
-            throw std::runtime_error("Only absolute paths can be translated!");
+            throw std::runtime_error("Only absolute paths can be translated: " + win_path.string());
         }
 
         const auto mapping = this->mappings_.find(win_path);