From e79080490330a0c7d36bd85935c04200c63aa185 Mon Sep 17 00:00:00 2001
From: n-peugnet <n.peugnet@free.fr>
Date: Mon, 18 Oct 2021 16:48:06 +0200
Subject: make exp conditionnal and do not run Borg by default

---
 TODO.md      |   1 +
 exp/Makefile |   2 +-
 exp/exp.sh   | 170 +++++++++++++++++++++++++++++++++++------------------------
 3 files changed, 103 insertions(+), 70 deletions(-)

diff --git a/TODO.md b/TODO.md
index bd95c74..4639a53 100644
--- a/TODO.md
+++ b/TODO.md
@@ -12,6 +12,7 @@ priority 1
     - [ ] add superblock (this is related to the `init` cmd).
     - [x] add version blocks (these are filled with the recipe and files if
         there is space left)
+- [ ] import from `dir` format
 - [x] command line with subcommands (like, hmm... git ? for instance).
 - [ ] experiences:
     - [x] compare against UDF (this will not be possible, unless we use a real
diff --git a/exp/Makefile b/exp/Makefile
index 5437785..734c40b 100644
--- a/exp/Makefile
+++ b/exp/Makefile
@@ -38,7 +38,7 @@ DNA_4K             ?= dna_4k
 DNA_8K             ?= dna_8k
 NOPACK             ?= nopack
 export GIT_NOPACK  ?= $(abspath $(NOPACK))
-export BORG        ?= borg
+# export BORG        ?= borg
 export TARGZ       ?= targz
 export REAL        ?= real
 export DIFFS       ?= diffs
diff --git a/exp/exp.sh b/exp/exp.sh
index 5e2d9be..e8f6bd7 100755
--- a/exp/exp.sh
+++ b/exp/exp.sh
@@ -42,14 +42,20 @@ set-git-dir() {
 GITC="git -C $REPO_PATH"
 OUT=/tmp/dna-backup-exp-out
 
-# Init git nopack dir
-rm $REPO_PATH/.git
-$GITC init --separate-git-dir=$GIT_NOPACK
-$GITC --git-dir=$GIT_NOPACK config gc.auto 0
-set-git-dir $GIT_PATH
+if [ -n "$GIT_NOPACK" ]
+then
+	# Init git nopack dir
+	rm $REPO_PATH/.git
+	$GITC init --separate-git-dir=$GIT_NOPACK
+	$GITC --git-dir=$GIT_NOPACK config gc.auto 0
+	set-git-dir $GIT_PATH
+fi
 
-# Init borg dir
-borg init -e none $BORG
+if [ -n "$BORG" ]
+then
+	# Init borg dir
+	borg init -e none $BORG
+fi
 
 # "empty tree" commit
 prev="4b825dc642cb6eb9a060e54bf8d69288fbee4904"
@@ -66,78 +72,104 @@ do
 	$GITC checkout $hash 2> $OUT \
 	|| (log "error checking out"; cat $OUT; exit 1)
 
-	# Save real size for this version
-	log "save real size for this version"
-	du -b --summarize $REPO_PATH > $(printf "%s.versions/%05d" $REAL $i)
-
-	# Create tar.gz for this version
-	log "create targ.gz for this version"
-	tar -czf $(printf "%s/%05d.tar.gz" $TARGZ $i) $REPO_PATH
-
-	# Create git diff for this version
-	log "create git diff for this version"
-	diff=$(printf "%s/%05d.diff.gz" $DIFFS $i)
-	$GITC diff --minimal --binary --unified=0 -l0 $prev \
-	| gzip \
-	> $diff
-
-	# Create git nopack for this version
-	log "create git nopack for this version"
-	set-git-dir $GIT_NOPACK
-	$GITC add .
-	$GITC commit -m $hash &> $OUT \
-	|| (log "error commiting to nopack"; cat $OUT; exit 1)
-	ls $GIT_NOPACK/objects/pack
-	find $GIT_NOPACK -type f -exec du -ba {} + \
-	> $(printf "%s.versions/%05d" $GIT_NOPACK $i)
-	set-git-dir $GIT_PATH
+	if [ -n "$REAL" ]
+	then
+		# Save real size for this version
+		log "save real size for this version"
+		du -b --summarize $REPO_PATH > $(printf "%s.versions/%05d" $REAL $i)
+	fi
+
+	if [ -n "$TARGZ" ]
+	then
+		# Create tar.gz for this version
+		log "create targ.gz for this version"
+		tar -czf $(printf "%s/%05d.tar.gz" $TARGZ $i) $REPO_PATH
+	fi
 
-	# Create borg backup for this versions
-	log "create borg backup for this versions"
-	borg create $BORG::$i $REPO_PATH
-	find $BORG/data -type f -exec du -ba {} + \
-	| cut -f1 \
-	| paste -sd+ \
-	| bc \
-	> $(printf "%s.versions/%05d" $BORG $i)
-
-	# Create dna backups for this version
-	cat $DNA_PARAMS | while read name flags
-	do
-		log "create $name backup for this version"
-		$DNA_BACKUP commit -v 2 $flags $REPO_PATH $name
-	done
+	if [ -n "$DIFFS" ]
+	then
+		# Create git diff for this version
+		log "create git diff for this version"
+		diff=$(printf "%s/%05d.diff.gz" $DIFFS $i)
+		$GITC diff --minimal --binary --unified=0 -l0 $prev \
+		| gzip \
+		> $diff
+	fi
 
-	if [[ $(( $i % $SKIP_CHECK )) == 0 ]]
+	if [ -n "$GIT_NOPACK" ]
 	then
-		# Check restore from git diffs
-		log "restore from git diffs"
-		TEMP=$(mktemp -d)
-		for n in $(seq 0 $i)
-		do
-			diff=$(printf "%s/%05d.diff.gz" $DIFFS $n)
-			cat $diff \
-			| gzip --decompress \
-			| git -C $TEMP apply --binary --unidiff-zero --whitespace=nowarn -
-		done
-		cp $REPO_PATH/.git $TEMP/
-		log "check restore from diffs"
-		diff --brief --recursive $REPO_PATH $TEMP \
-		|| log "git patchs restore do not match source"
-		rm -rf $TEMP
+		# Create git nopack for this version
+		log "create git nopack for this version"
+		set-git-dir $GIT_NOPACK
+		$GITC add .
+		$GITC commit -m $hash &> $OUT \
+		|| (log "error commiting to nopack"; cat $OUT; exit 1)
+		ls $GIT_NOPACK/objects/pack
+		find $GIT_NOPACK -type f -exec du -ba {} + \
+		> $(printf "%s.versions/%05d" $GIT_NOPACK $i)
+		set-git-dir $GIT_PATH
+	fi
+
+	if [ -n "$BORG" ]
+	then
+		# Create borg backup for this versions
+		log "create borg backup for this versions"
+		borg create $BORG::$i $REPO_PATH
+		find $BORG/data -type f -exec du -ba {} + \
+		| cut -f1 \
+		| paste -sd+ \
+		| bc \
+		> $(printf "%s.versions/%05d" $BORG $i)
+	fi
 
 
-		# Check restore from dna backups
+	if [ -n "$DNA_PARAMS" ]
+	then
+		# Create dna backups for this version
 		cat $DNA_PARAMS | while read name flags
 		do
-			log "restore from $name backup"
+			log "create $name backup for this version"
+			$DNA_BACKUP commit -v 2 $flags $REPO_PATH $name
+		done
+	fi
+
+	if [[ $(( $i % $SKIP_CHECK )) == 0 ]]
+	then
+
+		if [ -n "$DIFFS" ]
+		then
+			# Check restore from git diffs
+			log "restore from git diffs"
 			TEMP=$(mktemp -d)
-			$DNA_BACKUP restore -v 2 $flags $name $TEMP
-			log "check restore from backup"
+			for n in $(seq 0 $i)
+			do
+				diff=$(printf "%s/%05d.diff.gz" $DIFFS $n)
+				cat $diff \
+				| gzip --decompress \
+				| git -C $TEMP apply --binary --unidiff-zero --whitespace=nowarn -
+			done
+			cp $REPO_PATH/.git $TEMP/
+			log "check restore from diffs"
 			diff --brief --recursive $REPO_PATH $TEMP \
-			|| log "dna backup restore do not match source"
+			|| log "git patchs restore do not match source"
 			rm -rf $TEMP
-		done
+		fi
+
+
+		if [ -n "$DNA_PARAMS" ]
+		then
+			# Check restore from dna backups
+			cat $DNA_PARAMS | while read name flags
+			do
+				log "restore from $name backup"
+				TEMP=$(mktemp -d)
+				$DNA_BACKUP restore -v 2 $flags $name $TEMP
+				log "check restore from backup"
+				diff --brief --recursive $REPO_PATH $TEMP \
+				|| log "dna backup restore do not match source"
+				rm -rf $TEMP
+			done
+		fi
 	fi
 
 	prev=$hash
-- 
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