From 0005677f3ca35f1535f4827433efcd04f3a5d731 Mon Sep 17 00:00:00 2001
From: Klaus Aehlig <klaus.aehlig@huawei.com>
Date: Fri, 26 Jan 2024 16:57:57 +0100
Subject: just-mr: add option to dump effective rc

---
 src/other_tools/just_mr/cli.hpp | 4 ++++
 src/other_tools/just_mr/rc.cpp  | 8 ++++++++
 2 files changed, 12 insertions(+)

(limited to 'src')

diff --git a/src/other_tools/just_mr/cli.hpp b/src/other_tools/just_mr/cli.hpp
index 130b7611..bcd5302a 100644
--- a/src/other_tools/just_mr/cli.hpp
+++ b/src/other_tools/just_mr/cli.hpp
@@ -46,6 +46,7 @@ struct MultiRepoCommonArguments {
     std::optional<std::string> main{std::nullopt};
     std::optional<std::filesystem::path> rc_path{std::nullopt};
     std::optional<std::filesystem::path> git_path{std::nullopt};
+    std::optional<std::filesystem::path> dump_rc{std::nullopt};
     bool norc{false};
     std::size_t jobs{std::max(1U, std::thread::hardware_concurrency())};
     std::vector<std::string> defines{};
@@ -208,6 +209,9 @@ static inline void SetupMultiRepoCommonArguments(
                     fmt::format("Path to the git binary. (Default: {})",
                                 kDefaultGitPath))
         ->type_name("PATH");
+    app->add_option(
+           "--dump-rc", clargs->dump_rc, "Dump the effective rc value.")
+        ->type_name("PATH");
     app->add_flag("--norc", clargs->norc, "Do not use any just-mrrc file.");
     app->add_option("-j, --jobs",
                     clargs->jobs,
diff --git a/src/other_tools/just_mr/rc.cpp b/src/other_tools/just_mr/rc.cpp
index 320efca7..209e4be6 100644
--- a/src/other_tools/just_mr/rc.cpp
+++ b/src/other_tools/just_mr/rc.cpp
@@ -225,6 +225,14 @@ namespace {
         }
     }
 
+    // If requested, dump effective rc
+    if (clargs->common.dump_rc) {
+        auto dump_json = rc_config.ToJson();
+        dump_json.erase("rc files");
+        std::ofstream os(*clargs->common.dump_rc);
+        os << dump_json.dump(2) << std::endl;
+    }
+
     // read local build root; overwritten if user provided it already
     if (not clargs->common.just_mr_paths->root) {
         auto build_root =
-- 
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