From 6b3ed4455d943fca0606a5e2a18e629c6e56a111 Mon Sep 17 00:00:00 2001
From: Philipp Gesang <phg42.2a@gmail.com>
Date: Sun, 7 Jul 2013 17:42:54 +0200
Subject: add git metadata to diagnostic info in luaotfload-tool.lua

---
 luaotfload-tool.lua | 22 +++++++++++++++++-----
 mkfilelist          | 34 +++++++++++++++++++++++++++++++++-
 2 files changed, 50 insertions(+), 6 deletions(-)

diff --git a/luaotfload-tool.lua b/luaotfload-tool.lua
index 5a9e08d..3010653 100755
--- a/luaotfload-tool.lua
+++ b/luaotfload-tool.lua
@@ -928,11 +928,22 @@ do
 
     local verify_files = function (errcnt)
         out ("Loading file hashes.")
-        local hashes  = require (hash_list)
-        if not hashes then
-            out ("Testing %d files for integrity.", nhashes)
+        local info   = require (hash_list)
+        local hashes = info.hashes
+        local notes  = info.notes
+        if not hashes or #hashes == 0 then
+            out ("FAILED: cannot read checksums from %s.", hash_list)
+            return 1/0
+        elseif not notes then
+            out ("FAILED: cannot read commit metadata from %s.",
+                 hash_list)
             return 1/0
         end
+
+        out ("Luaotfload revision %s.", notes.revision)
+        out ("Committed by %s.",        notes.committer)
+        out ("Timestamp %s.",           notes.timestamp)
+
         local nhashes = #hashes
         out ("Testing %d files for integrity.", nhashes)
         for i = 1, nhashes do
@@ -953,14 +964,15 @@ do
                         errcnt = errcnt + 1
                         out ("FAILED: checksum mismatch for file %s.",
                              fname)
-                        out ("Expected %s, got %s.", canonicalsum, sum)
+                        out ("Expected %s.", canonicalsum)
+                        out ("Got      %s.", sum)
                     else
                         out ("Ok, %s passed.", fname)
                     end
                 end
             end
         end
-        return errcnt
+        return errcnt, notes
     end
 
     actions.diagnose = function (job)
diff --git a/mkfilelist b/mkfilelist
index 756bfe0..72dd59f 100644
--- a/mkfilelist
+++ b/mkfilelist
@@ -23,6 +23,7 @@ local stringformat = string.format
 local md5sumhexa   = md5.sumhexa
 local ioloaddata   = io.loaddata
 local iosavedata   = io.savedata
+local iopopen      = io.popen
 
 -----------------------------------------------------------------------
 -- settings
@@ -70,6 +71,35 @@ local die = function (...)
   os.exit (1)
 end
 
+local gitcmd = "git log -1 \z
+                    --format=\"return {\z
+                                %n  revision  = [[%H]],\z
+                                %n  timestamp = [[%cd]],\z
+                                %n  committer = [[%cn <%ce>]],\z
+                                %n}\" \z
+                    --date=iso"
+
+local git_info = function ()
+  --io.write (gitcmd)
+  --io.write "\n"
+  local chan = iopopen (gitcmd)
+  if not chan then
+    die ("this script needs to be run inside \z
+          the luaotfload git repository")
+  end
+
+  local data = chan:read "*all"
+  chan:close ()
+  if data and type (data) == "string" and data ~= "" then
+    data = load (data)
+    if not data then
+      die "cannot parse git information"
+    end
+    return data ()
+  end
+  die "cannot read from pipe"
+end
+
 -----------------------------------------------------------------------
 -- functionality
 -----------------------------------------------------------------------
@@ -103,7 +133,9 @@ end
 
 local main = function ()
   local hashes      = hash_all ()
-  local serialized  = table.serialize (hashes, true)
+  local notes       = git_info ()
+  local serialized  = table.serialize ({ notes = notes,
+                                         hashes = hashes }, true)
   local success     = io.savedata (filelist, serialized)
   if success == false then
     die ("could not write to %s.", filelist)
-- 
cgit v1.2.3