enhance: Add Util::format_human_readable_diff

2 files changed, 10 insertions, 0 deletions

diff --git a/src/Util.cpp b/src/Util.cpp
index 3aecbaa1..844e5497 100644
--- a/src/Util.cpp
+++ b/src/Util.cpp
@@ -556,6 +556,13 @@ format_base32hex(const uint8_t* data, size_t size)
 }
 
 std::string
+format_human_readable_diff(int64_t diff)
+{
+  const char* sign = diff == 0 ? "" : (diff > 0 ? "+" : "-");
+  return FMT("{}{}", sign, format_human_readable_size(std::abs(diff)));
+}
+
+std::string
 format_human_readable_size(uint64_t size)
 {
   if (size >= 1000 * 1000 * 1000) {
diff --git a/src/Util.hpp b/src/Util.hpp
index e29aff3d..1bd57b0d 100644
--- a/src/Util.hpp
+++ b/src/Util.hpp
@@ -143,6 +143,9 @@ std::string format_base16(const uint8_t* data, size_t size);
 // padding characters will be added.
 std::string format_base32hex(const uint8_t* data, size_t size);
 
+// Format `diff` as a human-readable string.
+std::string format_human_readable_diff(int64_t diff);
+
 // Format `size` as a human-readable string.
 std::string format_human_readable_size(uint64_t size);