From ce1460dd98185f80db479c7dc7ca19026149a255 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Thu, 24 Dec 2015 00:37:32 +0100
Subject: Add support for changing the `diff` command via an environment
 variable

While the file arguments remain fixed the actual `diff` application and its output style can be changed using the `CHANGE_LOG_DIFF_CMD` environment variable.
---
 src/change_log.cc | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'src/change_log.cc')

diff --git a/src/change_log.cc b/src/change_log.cc
index c592f20..44a6046 100644
--- a/src/change_log.cc
+++ b/src/change_log.cc
@@ -23,7 +23,13 @@ void init() {
 		logger   = std::make_unique<utility::Logger>(STDERR_FILENO);
 	}
 
-	tracker = std::make_unique<tracking::ChangeTracker>(logger.get());
+	if ( getenv("CHANGE_LOG_DIFF_CMD") != NULL ) {
+		tracker = std::make_unique<tracking::ChangeTracker>(
+			logger.get(), getenv("CHANGE_LOG_DIFF_CMD")
+		);
+	} else {
+		tracker = std::make_unique<tracking::ChangeTracker>(logger.get());
+	}
 }
 
 ssize_t write(int fd, const void* buffer, size_t count) {
-- 
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