[gimp] devel-docs: add a release-stats.sh

[Jehan Pagès <jehanp src gnome org>]

commit 19741310dbe58713fe4e01c5cba83e656f3ff4d6
Author: Jehan <jehan girinstud io>
Date:   Sat Jan 6 18:05:34 2018 +0100

    devel-docs: add a release-stats.sh
    
    Trying to manually read commits to acknowledge translators, designers,
    developers, etc. is just ridiculous. Let's try to have a script doing
    the work for us.
    You use it like this:
    - GIMP 2.9.8 stats: devel-docs/release-stats.sh GIMP_2_9_6 GIMP_2_9_8
    - GIMP 2.10 stats: devel-docs/release-stats.sh GIMP_2_8_0

 devel-docs/release-stats.sh |  114 +++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 114 insertions(+), 0 deletions(-)
---
diff --git a/devel-docs/release-stats.sh b/devel-docs/release-stats.sh
new file mode 100755
index 0000000..1ef7739
--- /dev/null
+++ b/devel-docs/release-stats.sh
@@ -0,0 +1,114 @@
+#!/bin/sh
+
+############################################
+# Script gathering statistics on a release #
+############################################
+
+#### Usage ####
+if [ "$#" -ne 2 -a "$#" -ne 1 ]; then
+    echo "Usage: $0 <GIMP_TAG_PREV> <GIMP_TAG_CUR>"
+    echo
+    echo "  GIMP_TAG_PREV: last tag release or commit (non-included in stats)"
+    echo "                 ex: GIMP_2_9_6"
+    echo "  GIMP_TAG_CUR:  current tag release or commit (included in stats); ex: GIMP_2_9_8"
+    echo "                 ex: GIMP_2_9_8."
+    echo "                 Optional. If absent, statistics up to HEAD."
+    exit 1
+fi
+
+PREV=$1
+git --no-pager show $PREV >/dev/null 2>&1
+if [ $? -ne 0 ]; then
+  echo "First tag is unknown: $PREV"
+  exit 2
+fi
+
+if [ "$#" = 2 ]; then
+  CUR=$2
+  git --no-pager show $CUR >/dev/null 2>&1
+  if [ $? -ne 0 ]; then
+    echo "Second tag is unknown: $CUR"
+    exit 2
+  fi
+else
+  CUR='HEAD'
+fi
+
+echo "## GIMP contributions between $PREV and $CUR ##"
+echo
+
+# Main list:
+contribs=`git --no-pager shortlog -s -n $PREV..$CUR`
+contribs_n=`printf "$contribs" | wc -l`
+commits_n=`git log --oneline $PREV..$CUR | wc -l`
+
+prev_date=`git log -1 --format=%ci $PREV`
+cur_date=`git log -1 --format=%ci $CUR`
+# I think this is not very portable, and may be a bash-specific syntax
+# for arithmetic operations. XXX
+days_n=$(( (`date -d  "$cur_date" +%s` - `date -d "$prev_date" +%s`)/(60*60*24) ))
+commits_rate=$(( $commits_n / $days_n ))
+
+echo "Start date: $prev_date - End date: $cur_date"
+echo "Between $PREV and $CUR, $contribs_n people contributed $commits_n commits to GIMP."
+echo "This is an average of $commits_rate commits a day."
+echo
+echo "Total contributor list:"
+printf "$contribs"
+
+echo
+echo
+echo "## DEVELOPERS ##"
+echo
+
+echo "Core developers:"
+
+git --no-pager shortlog -s -n $PREV..$CUR -- app/ "libgimp*" pdb tools/pdbgen/
+
+echo "Plugin and module developers:"
+
+git --no-pager shortlog -s -n $PREV..$CUR -- plug-ins/ modules/
+
+echo
+echo "## TRANSLATIONS ##"
+echo
+#git --no-pager log --stat $PREV..$CUR -- po* | grep "Updated\? .* translation"|sed "s/ *Updated\? \(.*\) 
translation.*/\\1/" | sort | uniq | paste -s -d, | sed 's/,/, /g'
+
+i18n=`git --no-pager log --stat $PREV..$CUR -- po* | grep "Updated\? .* translation"|sed "s/ *Updated\? 
\(.*\) translation.*/\\1/" | sort | uniq`
+i18n_n=`printf "$i18n" | wc -l`
+i18n_comma=`printf "$i18n" | paste -s -d, | sed 's/,/, /g'`
+
+echo "$i18n_n translations were updated: $i18n_comma."
+echo
+
+echo "Translators:"
+git --no-pager shortlog -sn $PREV..$CUR -- "po*/*.po"
+
+echo
+echo "## DESIGN ##"
+echo
+
+echo "Icon designers:"
+git --no-pager shortlog -sn $PREV..$CUR -- "icons/*.svg" "icons/*.png"
+
+echo "Theme designers:"
+git --no-pager shortlog -sn $PREV..$CUR -- "themes/*/gtkrc" "themes/*/*png"
+
+echo "Resource creators:"
+git --no-pager shortlog -sn $PREV..$CUR -- data/ etc/ desktop/ menus/
+
+echo
+echo "## Documenters ##"
+echo
+
+git --no-pager shortlog -sn $PREV..$CUR -- docs/ devel-docs/
+
+echo
+echo "## Build maintainers ##"
+echo
+
+echo "Core autotools build system:"
+git --no-pager shortlog -sn $PREV..$CUR -- configure.ac "*/Makefile.am" "tools/"
+
+echo "Binary builds:"
+git --no-pager shortlog -sn $PREV..$CUR -- build/