[feature] CHANGELOG: automatic update script

utils/CHANGELOG.TAG

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+9a7e9a41dc88ecfcc579ae7b383a00455b65ec6d

utils/upchangelog.sh

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+#!/usr/bin/env bash
+
+TMPPREF=/tmp/upchangelog_
+DIFFGIT=${TMPPREF}diffgit
+DIFFCHANGELOG=${TMPPREF}diffchangelog
+DIFFCHANGELOGNOCOMMENT=${TMPPREF}diffchangelog_nocomment
+FULLCHANGELOGPROP=${TMPPREF}FULLCHANGELOG.proposal
+CHANGELOGPROP=${TMPPREF}FULLCHANGELOG.proposal
+
+CHANGELOG=CHANGELOG
+FULLCHANGELOG=utils/FULLCHANGELOG
+CHANGELOGTAGF=utils/CHANGELOG.TAG
+
+touch $FULLCHANGELOG
+
+set -u
+set -e
+
+help() {
+    cat >&2 <<EOF
+Usage:
+        upchangelog.sh options
+with:
+        -low TAG                  the tag where to start the extract (defaut is CHANGELOG.TAG)
+        -high TAG                the tag where to start the extract (defaut is last vTAG)
+        -help			shows this message
+EOF
+}
+
+
+MASTERTAG=$(git tag | grep -e "^v[0-9]*" | sort -n | tail -n 1)
+CHANGELOGTAG=$(cat $CHANGELOGTAGF)
+
+normalise_tag(){
+    local SHA=git log -n --format="%H" $1
+    local TAG=git tag --contains $1
+    if [ "$TAG" = "" ];
+    then
+        echo $SHA
+    else
+        echo $TAG
+    fi
+}
+
+while [ $# -gt 0 ]; do
+    case "$1" in
+        -low)
+            shift
+            CHANGELOGTAG=$(normalise_tag $1)
+            ;;
+        -high)
+            shift
+            MASTERTAG=$(normalise_tag $1)
+            ;;
+       esac
+      shift
+done
+
+echo $CHANGELOGTAG "=>" $MASTERTAG
+echo $(git log $CHANGELOGTAG..$MASTERTAG | wc -l) commits
+
+
+header(){
+if [ "$(head -n 1 CHANGELOG)" != "$CHANGELOGTAG" ];
+then
+    echo -n "$CHANGELOGTAG.."
+fi
+echo $MASTERTAG
+}
+
+content(){
+    (git log -n 1 $1 | grep CHANGELOG | sed s/CHANGELOG//g | sed '1s/^\(.\)\{3\}//g')
+}
+
+changelogcommit(){
+    local commit=$1
+    local author=$(git log -n 1 --format="%an <%ae> %ad" $commit)
+    if [ $(content $commit | wc -w) -eq 0 ];
+    then
+        echo -n " *   "
+        git log -n 1 --format="%s" $commit
+    else
+        echo -n " * "
+        content $commit
+    fi
+    echo " -- $author"
+    echo " -- $commit"
+    echo ""
+}
+
+
+git log --pretty=format:%h --grep="^CHANGELOG" $CHANGELOGTAG..$MASTERTAG > $DIFFGIT
+
+echo $(cat $DIFFGIT | wc -w) entries
+
+if [ "$(cat $DIFFGIT | wc -w)" -gt 0 ];
+then
+    echo Adding the following
+    header > $DIFFCHANGELOG
+    for commit in $(cat $DIFFGIT);
+    do
+        changelogcommit $commit >> $DIFFCHANGELOG
+    done
+    cat $DIFFCHANGELOG | grep -v "^ \-\-"
+
+    cat $DIFFCHANGELOG $FULLCHANGELOG > $FULLCHANGELOGPROP
+    cat $FULLCHANGELOGPROP > $FULLCHANGELOG
+
+    grep -v "^ \-\-" $DIFFCHANGELOG > $DIFFCHANGELOGNOCOMMENT
+    cat $DIFFCHANGELOGNOCOMMENT $CHANGELOG > $CHANGELOGPROP
+    echo $MASTERTAG > $CHANGELOGTAGF
+
+    cat $CHANGELOGPROP > $CHANGELOG
+
+
+    rm /${TMPPREF}*
+else
+    echo Nothing to do
+fi