gzip 1.2.4

diff --git a/znew.in b/znew.in
new file mode 100644 (file)
index 0000000..5b61471
--- /dev/null
+++ b/znew.in
@@ -0,0 +1,146 @@
+:
+#!/bin/sh
+
+PATH="BINDIR:$PATH"; export PATH
+check=0
+pipe=0
+opt=
+files=
+keep=0
+res=0
+old=0
+new=0
+block=1024
+# block is the disk block size (best guess, need not be exact)
+
+warn="(does not preserve modes and timestamp)"
+tmp=/tmp/zfoo.$$
+echo hi > $tmp.1
+echo hi > $tmp.2
+if test -z "`(${CPMOD-cpmod} $tmp.1 $tmp.2) 2>&1`"; then
+  cpmod=${CPMOD-cpmod}
+  warn=""
+fi
+
+if test -z "$cpmod" && ${TOUCH-touch} -r $tmp.1 $tmp.2 2>/dev/null; then
+  cpmod="${TOUCH-touch}"
+  cpmodarg="-r"
+  warn="(does not preserve file modes)"
+fi
+
+# check if GZIP env. variable uses -S or --suffix
+gzip -q $tmp.1
+ext=`echo $tmp.1* | sed "s|$tmp.1||"`
+rm -f $tmp.[12]*
+if test -z "$ext"; then
+  echo znew: error determining gzip extension
+  exit 1
+fi
+if test "$ext" = ".Z"; then
+  echo znew: cannot use .Z as gzip extension.
+  exit 1
+fi
+
+for arg
+do
+  case "$arg" in
+  -*)     opt="$opt $arg"; shift;;
+   *)     break;;
+  esac
+done
+
+if test $# -eq 0; then
+  echo "recompress .Z files into $ext (gzip) files"
+  echo usage: `echo $0 | sed 's,^.*/,,'` "[-tv9KP]" file.Z...
+  echo "  -t tests the new files before deleting originals"
+  echo "  -v be verbose"
+  echo "  -9 use the slowest compression method (optimal compression)"
+  echo "  -K keep a .Z file when it is smaller than the $ext file"
+  echo "  -P use pipes for the conversion $warn"
+  exit 1
+fi
+
+opt=`echo "$opt" | sed -e 's/ //g' -e 's/-//g'`
+case "$opt" in
+  *t*) check=1; opt=`echo "$opt" | sed 's/t//g'`
+esac
+case "$opt" in
+  *K*) keep=1; opt=`echo "$opt" | sed 's/K//g'`
+esac
+case "$opt" in
+  *P*) pipe=1; opt=`echo "$opt" | sed 's/P//g'`
+esac
+if test -n "$opt"; then
+  opt="-$opt"
+fi
+
+for i do
+  n=`echo $i | sed 's/.Z$//'`
+  if test ! -f "$n.Z" ; then
+    echo $n.Z not found
+    res=1; continue
+  fi
+  test $keep -eq 1 && old=`wc -c < "$n.Z"`
+  if test $pipe -eq 1; then
+    if gzip -d < "$n.Z" | gzip $opt > "$n$ext"; then
+      # Copy file attributes from old file to new one, if possible.
+      test -n "$cpmod" && $cpmod $cpmodarg "$n.Z" "$n$ext" 2> /dev/null
+    else
+      echo error while recompressing $n.Z
+      res=1; continue
+    fi
+  else
+    if test $check -eq 1; then
+      if cp -p "$n.Z" "$n.$$" 2> /dev/null || cp "$n.Z" "$n.$$"; then
+       :
+      else
+       echo cannot backup "$n.Z"
+        res=1; continue
+      fi
+    fi
+    if gzip -d "$n.Z"; then
+      :
+    else
+      test $check -eq 1 && mv "$n.$$" "$n.Z"
+      echo error while uncompressing $n.Z
+      res=1; continue
+    fi
+    if gzip $opt "$n"; then
+      :
+    else
+      if test $check -eq 1; then
+       mv "$n.$$" "$n.Z" && rm -f "$n"
+        echo error while recompressing $n
+      else
+       # compress $n  (might be dangerous if disk full)
+        echo error while recompressing $n, left uncompressed
+      fi
+      res=1; continue
+    fi
+  fi
+  test $keep -eq 1 && new=`wc -c < "$n$ext"`
+  if test $keep -eq 1 -a `expr \( $old + $block - 1 \) / $block` -lt \
+                         `expr \( $new + $block - 1 \) / $block`; then
+    if test $pipe -eq 1; then
+      rm -f "$n$ext"
+    elif test $check -eq 1; then
+      mv "$n.$$" "$n.Z" && rm -f "$n$ext"
+    else
+      gzip -d "$n$ext" && compress "$n" && rm -f "$n$ext"
+    fi
+    echo "$n.Z smaller than $n$ext -- unchanged"
+
+  elif test $check -eq 1; then
+    if gzip -t "$n$ext" ; then
+      rm -f "$n.$$" "$n.Z"
+    else
+      test $pipe -eq 0 && mv "$n.$$" "$n.Z"
+      rm -f "$n$ext"
+      echo error while testing $n$ext, $n.Z unchanged
+      res=1; continue
+    fi
+  elif test $pipe -eq 1; then
+    rm -f "$n.Z"
+  fi
+done
+exit $res