Add script to recompress traces.

1 files changed, 22 insertions, 0 deletions

diff --git a/scripts/tracerepack.sh b/scripts/tracerepack.sh
new file mode 100755
index 0000000..9152b5d
--- /dev/null
+++ b/scripts/tracerepack.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+# Script to recompress the traces
+
+set -e
+
+for TRACE
+do
+    gzip -l "$TRACE" | sed -n '2p' | while read COMPRESSED UNCOMPRESSED RATIO FILENAME
+    do
+        gzip -dc "$TRACE" | pv -s "$UNCOMPRESSED" | gzip --best --no-name > "$TRACE.pack"
+    done
+    COMPRESSED=`stat -c %s "$TRACE"`
+    RECOMPRESSED=`stat -c %s "$TRACE.pack"`
+    echo "$COMPRESSED -> $RECOMPRESSED"
+    if [ "$RECOMPRESSED" -lt "$COMPRESSED" ]
+    then
+        touch -r "$TRACE" "$TRACE.pack"
+        mv "$TRACE.pack" "$TRACE"
+    else
+        rm "$TRACE.pack"
+    fi
+done