bash : archive : add timestamp to the new format & converter.

.linux/bash/module/archive.sh

@@ -1,4 +1,5 @@
-_ARCHIVE_PATTERN="_[[:alnum:]]{40}.tar.[xg]z"
+_ARCHIVE_PATTERN="_[0-9]{12}-[[:alnum:]]{40}.tar.[xg]z"
+alias _ARCHIVE_DATE="date +%Y%m%d%H%M"
 
 # archive file with maximum compression and checksum.
 # usage: archive [FILES]
@@ -7,6 +8,7 @@ archive()
   local targets=("${@}")      # target file(s).
   local count=0               # processed count.
   local total=${#}            # total to process.
+  local date=$(_ARCHIVE_DATE) # date stamp.
 
   # set dafult value to target all supported archives.
   if [[ "${targets}" = "" ]]; then
@@ -27,7 +29,7 @@ archive()
     tar -c "${target}" | pv -s $(du -sb "${target}" | awk '{print $1}') | xz -9e > "${target%/*}".tar.xz
     
     # append hash to target name.
-    mv "${target%/*}".tar.xz "${target%/*}"_$(sha1sum "${target%/*}".tar.xz | cut -d\  -f1).tar.xz
+    mv "${target%/*}".tar.xz "${target%/*}"_${date}-$(sha1sum "${target%/*}".tar.xz | cut -d\  -f1).tar.xz
   done
 }
 
@@ -38,6 +40,7 @@ archive_fast()
   local targets=("${@}")      # target file(s).
   local count=0               # processed count.
   local total=${#}            # total to process.
+  local date=$(_ARCHIVE_DATE) # date stamp.
 
   # set dafult value to target all supported archives.
   if [[ "${targets}" = "" ]]; then
@@ -58,7 +61,7 @@ archive_fast()
     tar -c "${target}" | pv -s $(du -sb "${target}" | awk '{print $1}') | gzip -1 > "${target%/*}".tar.gz
     
     # append hash to target name.
-    mv "${target%/*}".tar.gz "${target%/*}"_$(sha1sum "${target%/*}".tar.gz | cut -d\  -f1).tar.gz
+    mv "${target%/*}".tar.gz "${target%/*}"_${date}-$(sha1sum "${target%/*}".tar.gz | cut -d\  -f1).tar.gz
   done
 }
 
@@ -73,7 +76,7 @@ archive_check()
 
   # set dafult value to target all supported archives.
   if [[ "${targets}" = "" ]]; then
-    targets=(${_ARCHIVE_PATTERN})
+    targets=($(ls | grep -E ${_ARCHIVE_PATTERN}))
     total=${#targets[@]}
   fi
 
@@ -89,7 +92,7 @@ archive_check()
     local status="[${count}/${total}] ${target}"
 
     # extract hash from name.
-    local saved="${target##*_}"
+    local saved="${target##*-}"
     saved="${saved%%.*}"
 
     # calculate actual hash.
@@ -124,7 +127,7 @@ unarchive()
   
   # set dafult value to target all supported archives.
   if [[ "${targets}" = "" ]]; then
-    targets=(${_ARCHIVE_PATTERN})
+    targets=($(ls | grep -E ${_ARCHIVE_PATTERN}))
     total=${#targets[@]}
   fi
 
@@ -137,7 +140,7 @@ unarchive()
     local status="[${count}/${total}] ${target}"
 
     # extract hash from name.
-    local saved="${target##*_}"
+    local saved="${target##*-}"
     saved="${saved%%.*}"
     
     # calculate actual hash.
@@ -164,7 +167,7 @@ archive_name()
 
   # set dafult value to target all supported archives.
   if [[ "${targets}" = "" ]]; then
-    targets=(${_ARCHIVE_PATTERN})
+    targets=($(ls | grep -E ${_ARCHIVE_PATTERN}))
     total=${#targets[@]}
   fi
 
@@ -206,6 +209,24 @@ archive_name()
   done
 }
 
+# convert an old archive to a new format. TODO: remove me after some time when there won't be any old archives.
+archive_convert()
+{
+  local old_format="_[[:alnum:]]{40}.tar.[xg]z"
+  local targets=($(ls | grep -E ${old_format}))
+
+  for target in "${targets[@]}"; do
+    local stamp=$(stat --format '%w' -- "${target}" | sed -e 's/\..*//' -e 's/:..$//' -e 's/-//g' -e 's/://' -e 's/\ //')
+    local name="${target%_*}"
+    local old_data="${target##*_}"
+    local new_name="${name}_${stamp}-${old_data}"
+
+    echo "${target} -> ${new_name}"
+
+    mv "${target}" "${new_name}"
+  done
+}
+
 # export everything, primarily for use with parallel..
 export -f archive archive_fast archive_check unarchive archive_name