[Buildroot] [PATCH] utils/size-stats-compare: add package name in detail output

[Thomas De Schampheleire <patrickdepinguin@gmail.com>]

From: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>

size-stats-compare gives an overview of the size increase/decrease between
two cases, based on packages-file-list.txt. The 'detail' mode gives info per
file, otherwise per package.

But sometimes, you want the detailed per-file info, but only for a specific
package. Since the detailed output no longer lists the package name, you
cannot simply grep for it. A workaround was to filter the input
packages-file-list.txt's first, and then pass these filtered versions to
size-stats-compare.

Make this easier by adding the package name next to the filename in detailed
output. This allows grep'ing normally.
For example:

  $ utils/size-stats-compare orig new  -t 100 -d | grep ebtables
      -67712 removed lib/ebtables/libebtc.so (ebtables)
      -66764 removed lib/ebtables/libebt_nat.so (ebtables)
      -66752 removed sbin/ebtables (ebtables)
      -66704 removed lib/ebtables/libebt_arp.so (ebtables)
      -66700 removed lib/ebtables/libebt_stp.so (ebtables)
      -66700 removed lib/ebtables/libebt_among.so (ebtables)
      -66684 removed lib/ebtables/libebt_ip.so (ebtables)
      -66676 removed lib/ebtables/libebt_limit.so (ebtables)
      -66656 removed lib/ebtables/libebt_log.so (ebtables)
      -66648 removed lib/ebtables/libebt_mark.so (ebtables)
      -66636 removed lib/ebtables/libebt_pkttype.so (ebtables)
      -66604 removed lib/ebtables/libebt_vlan.so (ebtables)
      -66588 removed lib/ebtables/libebt_ulog.so (ebtables)
      -66588 removed lib/ebtables/libebt_nflog.so (ebtables)
      -66584 removed lib/ebtables/libebt_arpreply.so (ebtables)
      -66544 removed lib/ebtables/libebt_ip6.so (ebtables)
      -66540 removed lib/ebtables/libebt_802_3.so (ebtables)
      -66536 removed lib/ebtables/libebt_standard.so (ebtables)
      -66524 removed lib/ebtables/libebt_mark_m.so (ebtables)
      -66524 removed lib/ebtables/libebt_redirect.so (ebtables)
      -66452 removed lib/ebtables/libebtable_broute.so (ebtables)
      -66452 removed lib/ebtables/libebtable_filter.so (ebtables)
      -66452 removed lib/ebtables/libebtable_nat.so (ebtables)
       66752   added usr/sbin/ebtablesd (ebtables)
       66752   added usr/sbin/ebtables-legacy (ebtables)
       66752   added usr/sbin/ebtablesu (ebtables)
      200840   added usr/lib/libebtc.so.0.0.0 (ebtables)

Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
---
 utils/size-stats-compare | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/utils/size-stats-compare b/utils/size-stats-compare
index a3d7f250c6..7a6cb9d258 100755
--- a/utils/size-stats-compare
+++ b/utils/size-stats-compare
@@ -40,9 +40,9 @@ def read_file_size_csv(inputf, detail=None):
 
     for row in reader:
         if detail:
-            sizes[row[0]] = int(row[2])
+            sizes[(row[0], row[1])] = int(row[2])
         else:
-            sizes[row[1]] = int(row[3])
+            sizes[(None, row[1])] = int(row[3])
 
     return sizes
 
@@ -73,13 +73,18 @@ def print_results(result, threshold):
 
     from six import iteritems
     list_result = list(iteritems(result))
-    # result is a dictionary: name -> (flag, size difference)
-    # list_result is a list of tuples: (name, (flag, size difference))
+    # result is a dictionary: (filename, pkgname) -> (flag, size difference)
+    # list_result is a list of tuples: ((filename, pkgname), (flag, size difference))
+    # filename may be None if no detail is requested.
 
     for entry in sorted(list_result, key=lambda entry: entry[1][1]):
         if threshold is not None and abs(entry[1][1]) <= threshold:
             continue
-        print('%12s %7s %s' % (entry[1][1], entry[1][0], entry[0]))
+        if entry[0][0]:
+            name = '%s (%s)' % (entry[0][0], entry[0][1])
+        else:
+            name = '%s' % entry[0][1]
+        print('%12s %7s %s' % (entry[1][1], entry[1][0], name))
 
 
 # main #########################################################################
@@ -126,5 +131,5 @@ print('Size difference per %s (bytes), threshold = %s' % (keyword, args.threshol
 print(80*'-')
 print_results(delta, args.threshold)
 print(80*'-')
-print_results({'TOTAL': ('', sum(new_sizes.values()) - sum(old_sizes.values()))},
+print_results({(None, 'TOTAL'): ('', sum(new_sizes.values()) - sum(old_sizes.values()))},
               threshold=None)
-- 
2.26.2